Workspace.java revision 6920c2ce340354286c152cefaf75445314194778
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 private static final float WORKSPACE_TRANSLATION = 50.0f; 91 92 // These are extra scale factors to apply to the mini home screens 93 // so as to achieve the desired transform 94 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 95 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 96 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 97 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 99 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 100 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 101 102 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 103 private static final int BACKGROUND_FADE_IN_DURATION = 350; 104 105 // These animators are used to fade the children's outlines 106 private ObjectAnimator mChildrenOutlineFadeInAnimation; 107 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 108 private float mChildrenOutlineAlpha = 0; 109 110 // These properties refer to the background protection gradient used for AllApps and Customize 111 private ObjectAnimator mBackgroundFadeInAnimation; 112 private ObjectAnimator mBackgroundFadeOutAnimation; 113 private Drawable mBackground; 114 private Drawable mCustomizeTrayBackground; 115 private boolean mDrawCustomizeTrayBackground; 116 private float mBackgroundAlpha = 0; 117 private float mOverScrollMaxBackgroundAlpha = 0.0f; 118 private int mOverScrollPageIndex = -1; 119 120 private View mCustomizationDrawer; 121 private View mCustomizationDrawerContent; 122 private int[] mCustomizationDrawerPos = new int[2]; 123 private float[] mCustomizationDrawerTransformedPos = new float[2]; 124 125 private final WallpaperManager mWallpaperManager; 126 127 private int mDefaultPage; 128 129 private boolean mPageMoving = false; 130 private boolean mIsDragInProcess = false; 131 132 /** 133 * CellInfo for the cell that is currently being dragged 134 */ 135 private CellLayout.CellInfo mDragInfo; 136 137 /** 138 * Target drop area calculated during last acceptDrop call. 139 */ 140 private int[] mTargetCell = null; 141 142 /** 143 * The CellLayout that is currently being dragged over 144 */ 145 private CellLayout mDragTargetLayout = null; 146 147 private Launcher mLauncher; 148 private IconCache mIconCache; 149 private DragController mDragController; 150 151 // These are temporary variables to prevent having to allocate a new object just to 152 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 153 private int[] mTempCell = new int[2]; 154 private int[] mTempEstimate = new int[2]; 155 private float[] mTempOriginXY = new float[2]; 156 private float[] mTempDragCoordinates = new float[2]; 157 private float[] mTempTouchCoordinates = new float[2]; 158 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 159 private float[] mTempDragBottomRightCoordinates = new float[2]; 160 private Matrix mTempInverseMatrix = new Matrix(); 161 162 private SpringLoadedDragController mSpringLoadedDragController; 163 164 private static final int DEFAULT_CELL_COUNT_X = 4; 165 private static final int DEFAULT_CELL_COUNT_Y = 4; 166 167 private Drawable mPreviousIndicator; 168 private Drawable mNextIndicator; 169 170 // State variable that indicates whether the pages are small (ie when you're 171 // in all apps or customize mode) 172 private boolean mIsSmall = false; 173 private boolean mIsInUnshrinkAnimation = false; 174 private AnimatorListener mShrinkAnimationListener, mUnshrinkAnimationListener; 175 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 176 private ShrinkState mShrinkState; 177 private boolean mWasSpringLoadedOnDragExit = false; 178 private boolean mWaitingToShrink = false; 179 private ShrinkState mWaitingToShrinkState; 180 private AnimatorSet mAnimator; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 /** If mInScrollArea is true, the direction of the scroll. */ 186 private int mPendingScrollDirection = DragController.SCROLL_NONE; 187 188 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 189 private Bitmap mDragOutline = null; 190 private final Rect mTempRect = new Rect(); 191 private final int[] mTempXY = new int[2]; 192 193 private ValueAnimator mDropAnim = null; 194 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 195 private View mDropView = null; 196 private int[] mDropViewPos = new int[] { -1, -1 }; 197 198 // Paint used to draw external drop outline 199 private final Paint mExternalDragOutlinePaint = new Paint(); 200 201 // Camera and Matrix used to determine the final position of a neighboring CellLayout 202 private final Matrix mMatrix = new Matrix(); 203 private final Camera mCamera = new Camera(); 204 private final float mTempFloat2[] = new float[2]; 205 206 /** 207 * Used to inflate the Workspace from XML. 208 * 209 * @param context The application's context. 210 * @param attrs The attributes set containing the Workspace's customization values. 211 */ 212 public Workspace(Context context, AttributeSet attrs) { 213 this(context, attrs, 0); 214 } 215 216 /** 217 * Used to inflate the Workspace from XML. 218 * 219 * @param context The application's context. 220 * @param attrs The attributes set containing the Workspace's customization values. 221 * @param defStyle Unused. 222 */ 223 public Workspace(Context context, AttributeSet attrs, int defStyle) { 224 super(context, attrs, defStyle); 225 mContentIsRefreshable = false; 226 227 if (!LauncherApplication.isScreenXLarge()) { 228 mFadeInAdjacentScreens = false; 229 } 230 231 mWallpaperManager = WallpaperManager.getInstance(context); 232 233 TypedArray a = context.obtainStyledAttributes(attrs, 234 R.styleable.Workspace, defStyle, 0); 235 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 236 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 237 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 238 a.recycle(); 239 240 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 241 setHapticFeedbackEnabled(false); 242 243 initWorkspace(); 244 } 245 246 /** 247 * Initializes various states for this workspace. 248 */ 249 protected void initWorkspace() { 250 Context context = getContext(); 251 mCurrentPage = mDefaultPage; 252 Launcher.setScreen(mCurrentPage); 253 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 254 mIconCache = app.getIconCache(); 255 mExternalDragOutlinePaint.setAntiAlias(true); 256 setWillNotDraw(false); 257 258 try { 259 final Resources res = getResources(); 260 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 261 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 262 } catch (Resources.NotFoundException e) { 263 // In this case, we will skip drawing background protection 264 } 265 266 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 267 @Override 268 public void onAnimationStart(Animator animation) { 269 mIsInUnshrinkAnimation = true; 270 } 271 @Override 272 public void onAnimationEnd(Animator animation) { 273 mIsInUnshrinkAnimation = false; 274 if (mShrinkState != ShrinkState.SPRING_LOADED) { 275 mDrawCustomizeTrayBackground = false; 276 } 277 } 278 }; 279 mSnapVelocity = 600; 280 } 281 282 @Override 283 protected int getScrollMode() { 284 if (LauncherApplication.isScreenXLarge()) { 285 return SmoothPagedView.X_LARGE_MODE; 286 } else { 287 return SmoothPagedView.DEFAULT_MODE; 288 } 289 } 290 291 @Override 292 public void addView(View child, int index, LayoutParams params) { 293 if (!(child instanceof CellLayout)) { 294 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 295 } 296 ((CellLayout) child).setOnInterceptTouchListener(this); 297 super.addView(child, index, params); 298 } 299 300 @Override 301 public void addView(View child) { 302 if (!(child instanceof CellLayout)) { 303 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 304 } 305 ((CellLayout) child).setOnInterceptTouchListener(this); 306 super.addView(child); 307 } 308 309 @Override 310 public void addView(View child, int index) { 311 if (!(child instanceof CellLayout)) { 312 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 313 } 314 ((CellLayout) child).setOnInterceptTouchListener(this); 315 super.addView(child, index); 316 } 317 318 @Override 319 public void addView(View child, int width, int height) { 320 if (!(child instanceof CellLayout)) { 321 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 322 } 323 ((CellLayout) child).setOnInterceptTouchListener(this); 324 super.addView(child, width, height); 325 } 326 327 @Override 328 public void addView(View child, LayoutParams params) { 329 if (!(child instanceof CellLayout)) { 330 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 331 } 332 ((CellLayout) child).setOnInterceptTouchListener(this); 333 super.addView(child, params); 334 } 335 336 /** 337 * @return The open folder on the current screen, or null if there is none 338 */ 339 Folder getOpenFolder() { 340 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 341 int count = currentPage.getChildCount(); 342 for (int i = 0; i < count; i++) { 343 View child = currentPage.getChildAt(i); 344 if (child instanceof Folder) { 345 Folder folder = (Folder) child; 346 if (folder.getInfo().opened) 347 return folder; 348 } 349 } 350 return null; 351 } 352 353 ArrayList<Folder> getOpenFolders() { 354 final int screenCount = getChildCount(); 355 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 356 357 for (int screen = 0; screen < screenCount; screen++) { 358 CellLayout currentPage = (CellLayout) getChildAt(screen); 359 int count = currentPage.getChildCount(); 360 for (int i = 0; i < count; i++) { 361 View child = currentPage.getChildAt(i); 362 if (child instanceof Folder) { 363 Folder folder = (Folder) child; 364 if (folder.getInfo().opened) 365 folders.add(folder); 366 break; 367 } 368 } 369 } 370 return folders; 371 } 372 373 boolean isDefaultPageShowing() { 374 return mCurrentPage == mDefaultPage; 375 } 376 377 /** 378 * Sets the current screen. 379 * 380 * @param currentPage 381 */ 382 @Override 383 void setCurrentPage(int currentPage) { 384 super.setCurrentPage(currentPage); 385 updateWallpaperOffset(mScrollX); 386 } 387 388 /** 389 * Adds the specified child in the specified screen. The position and dimension of 390 * the child are defined by x, y, spanX and spanY. 391 * 392 * @param child The child to add in one of the workspace's screens. 393 * @param screen The screen in which to add the child. 394 * @param x The X position of the child in the screen's grid. 395 * @param y The Y position of the child in the screen's grid. 396 * @param spanX The number of cells spanned horizontally by the child. 397 * @param spanY The number of cells spanned vertically by the child. 398 */ 399 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 400 addInScreen(child, screen, x, y, spanX, spanY, false); 401 } 402 403 void addInFullScreen(View child, int screen) { 404 addInScreen(child, screen, 0, 0, -1, -1); 405 } 406 407 /** 408 * Adds the specified child in the specified screen. The position and dimension of 409 * the child are defined by x, y, spanX and spanY. 410 * 411 * @param child The child to add in one of the workspace's screens. 412 * @param screen The screen in which to add the child. 413 * @param x The X position of the child in the screen's grid. 414 * @param y The Y position of the child in the screen's grid. 415 * @param spanX The number of cells spanned horizontally by the child. 416 * @param spanY The number of cells spanned vertically by the child. 417 * @param insert When true, the child is inserted at the beginning of the children list. 418 */ 419 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 420 if (screen < 0 || screen >= getChildCount()) { 421 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 422 + " (was " + screen + "); skipping child"); 423 return; 424 } 425 426 final CellLayout group = (CellLayout) getChildAt(screen); 427 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 428 if (lp == null) { 429 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 430 } else { 431 lp.cellX = x; 432 lp.cellY = y; 433 lp.cellHSpan = spanX; 434 lp.cellVSpan = spanY; 435 } 436 437 // Get the canonical child id to uniquely represent this view in this screen 438 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 439 boolean markCellsAsOccupied = !(child instanceof Folder); 440 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 441 // TODO: This branch occurs when the workspace is adding views 442 // outside of the defined grid 443 // maybe we should be deleting these items from the LauncherModel? 444 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 445 } 446 447 if (!(child instanceof Folder)) { 448 child.setHapticFeedbackEnabled(false); 449 child.setOnLongClickListener(mLongClickListener); 450 } 451 if (child instanceof DropTarget) { 452 mDragController.addDropTarget((DropTarget) child); 453 } 454 } 455 456 public boolean onTouch(View v, MotionEvent event) { 457 // this is an intercepted event being forwarded from a cell layout 458 if (mIsSmall || mIsInUnshrinkAnimation) { 459 // Only allow clicks on a CellLayout if it is visible 460 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 461 mLauncher.onWorkspaceClick((CellLayout) v); 462 } 463 return true; 464 } else if (!mPageMoving) { 465 if (v == getChildAt(mCurrentPage - 1)) { 466 snapToPage(mCurrentPage - 1); 467 return true; 468 } else if (v == getChildAt(mCurrentPage + 1)) { 469 snapToPage(mCurrentPage + 1); 470 return true; 471 } 472 } 473 return false; 474 } 475 476 protected void onWindowVisibilityChanged (int visibility) { 477 mLauncher.onWindowVisibilityChanged(visibility); 478 } 479 480 @Override 481 public boolean dispatchUnhandledMove(View focused, int direction) { 482 if (mIsSmall || mIsInUnshrinkAnimation) { 483 // when the home screens are shrunken, shouldn't allow side-scrolling 484 return false; 485 } 486 return super.dispatchUnhandledMove(focused, direction); 487 } 488 489 @Override 490 public boolean onInterceptTouchEvent(MotionEvent ev) { 491 if (mIsSmall || mIsInUnshrinkAnimation) { 492 if (mLauncher.isAllAppsVisible() && 493 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 494 // Intercept this event so we can show the workspace in full view 495 // when it is clicked on and it is small 496 return true; 497 } 498 return false; 499 } 500 return super.onInterceptTouchEvent(ev); 501 } 502 503 @Override 504 protected void determineScrollingStart(MotionEvent ev) { 505 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 506 } 507 508 protected void onPageBeginMoving() { 509 if (mNextPage != INVALID_PAGE) { 510 // we're snapping to a particular screen 511 enableChildrenCache(mCurrentPage, mNextPage); 512 } else { 513 // this is when user is actively dragging a particular screen, they might 514 // swipe it either left or right (but we won't advance by more than one screen) 515 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 516 } 517 showOutlines(); 518 mPageMoving = true; 519 } 520 521 protected void onPageEndMoving() { 522 clearChildrenCache(); 523 // Hide the outlines, as long as we're not dragging 524 if (!mDragController.dragging()) { 525 hideOutlines(); 526 } 527 mOverScrollMaxBackgroundAlpha = 0.0f; 528 mOverScrollPageIndex = -1; 529 mPageMoving = false; 530 } 531 532 @Override 533 protected void notifyPageSwitchListener() { 534 super.notifyPageSwitchListener(); 535 536 if (mPreviousIndicator != null) { 537 // if we know the next page, we show the indication for it right away; it looks 538 // weird if the indicators are lagging 539 int page = mNextPage; 540 if (page == INVALID_PAGE) { 541 page = mCurrentPage; 542 } 543 mPreviousIndicator.setLevel(page); 544 mNextIndicator.setLevel(page); 545 } 546 Launcher.setScreen(mCurrentPage); 547 }; 548 549 private void updateWallpaperOffset(int scrollRange) { 550 final boolean isStaticWallpaper = (mWallpaperManager != null) && 551 (mWallpaperManager.getWallpaperInfo() == null); 552 if (LauncherApplication.isScreenXLarge() && !isStaticWallpaper) { 553 IBinder token = getWindowToken(); 554 if (token != null) { 555 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0 ); 556 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 557 Math.max(0.f, Math.min(mScrollX/(float)scrollRange, 1.f)), 0); 558 } 559 } 560 } 561 562 public void showOutlines() { 563 if (!mIsSmall && !mIsInUnshrinkAnimation) { 564 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 565 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 566 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 567 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 568 mChildrenOutlineFadeInAnimation.start(); 569 } 570 } 571 572 public void hideOutlines() { 573 if (!mIsSmall && !mIsInUnshrinkAnimation) { 574 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 575 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 576 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 577 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 578 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 579 mChildrenOutlineFadeOutAnimation.start(); 580 } 581 } 582 583 public void setChildrenOutlineAlpha(float alpha) { 584 mChildrenOutlineAlpha = alpha; 585 for (int i = 0; i < getChildCount(); i++) { 586 CellLayout cl = (CellLayout) getChildAt(i); 587 cl.setBackgroundAlpha(alpha); 588 } 589 } 590 591 public float getChildrenOutlineAlpha() { 592 return mChildrenOutlineAlpha; 593 } 594 595 private void showBackgroundGradientForAllApps() { 596 showBackgroundGradient(); 597 mDrawCustomizeTrayBackground = false; 598 } 599 600 private void showBackgroundGradientForCustomizeTray() { 601 showBackgroundGradient(); 602 mDrawCustomizeTrayBackground = true; 603 } 604 605 private void showBackgroundGradient() { 606 if (mBackground == null) return; 607 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 608 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 609 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 610 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 611 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 612 mBackgroundFadeInAnimation.start(); 613 } 614 615 private void hideBackgroundGradient() { 616 if (mBackground == null) return; 617 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 618 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 619 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 620 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 621 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 622 mBackgroundFadeOutAnimation.start(); 623 } 624 625 public void setBackgroundAlpha(float alpha) { 626 mBackgroundAlpha = alpha; 627 invalidate(); 628 } 629 630 public float getBackgroundAlpha() { 631 return mBackgroundAlpha; 632 } 633 634 /** 635 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 636 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 637 * as being larger. This method computes what offset the rotated view should be translated 638 * in order to minimize this perceived gap. 639 * @param degrees Angle of the view 640 * @param width Width of the view 641 * @param height Height of the view 642 * @return Offset to be used in a View.setTranslationX() call 643 */ 644 private float getOffsetXForRotation(float degrees, int width, int height) { 645 mMatrix.reset(); 646 mCamera.save(); 647 mCamera.rotateY(Math.abs(degrees)); 648 mCamera.getMatrix(mMatrix); 649 mCamera.restore(); 650 651 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 652 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 653 mTempFloat2[0] = width; 654 mTempFloat2[1] = height; 655 mMatrix.mapPoints(mTempFloat2); 656 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 657 } 658 659 float backgroundAlphaInterpolator(float r) { 660 float pivotA = 0.1f; 661 float pivotB = 0.4f; 662 if (r < pivotA) { 663 return 0; 664 } else if (r > pivotB) { 665 return 1.0f; 666 } else { 667 return (r - pivotA)/(pivotB - pivotA); 668 } 669 } 670 671 float overScrollBackgroundAlphaInterpolator(float r) { 672 float threshold = 0.08f; 673 674 if (r > mOverScrollMaxBackgroundAlpha) { 675 mOverScrollMaxBackgroundAlpha = r; 676 } else if (r < mOverScrollMaxBackgroundAlpha) { 677 r = mOverScrollMaxBackgroundAlpha; 678 } 679 680 return Math.min(r / threshold, 1.0f); 681 } 682 683 @Override 684 protected void screenScrolled(int screenCenter) { 685 final int halfScreenSize = getMeasuredWidth() / 2; 686 687 for (int i = 0; i < getChildCount(); i++) { 688 CellLayout cl = (CellLayout) getChildAt(i); 689 if (cl != null) { 690 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 691 int delta = screenCenter - (getChildOffset(i) - 692 getRelativeChildOffset(i) + halfScreenSize); 693 694 float scrollProgress = delta / (totalDistance * 1.0f); 695 scrollProgress = Math.min(scrollProgress, 1.0f); 696 scrollProgress = Math.max(scrollProgress, -1.0f); 697 698 // If the current page (i) is being overscrolled, we use a different 699 // set of rules for setting the background alpha multiplier. 700 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 701 i == getChildCount() -1 )) { 702 cl.setBackgroundAlphaMultiplier( 703 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 704 mOverScrollPageIndex = i; 705 } else if (mOverScrollPageIndex != i) { 706 cl.setBackgroundAlphaMultiplier( 707 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 708 709 } 710 711 float rotation = WORKSPACE_ROTATION * scrollProgress; 712 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 713 cl.setTranslationX(translationX); 714 715 cl.setRotationY(rotation); 716 } 717 } 718 } 719 720 protected void onAttachedToWindow() { 721 super.onAttachedToWindow(); 722 computeScroll(); 723 mDragController.setWindowToken(getWindowToken()); 724 } 725 726 @Override 727 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 728 super.onLayout(changed, left, top, right, bottom); 729 730 // if shrinkToBottom() is called on initialization, it has to be deferred 731 // until after the first call to onLayout so that it has the correct width 732 if (mWaitingToShrink) { 733 // shrink can trigger a synchronous onLayout call, so we 734 // post this to avoid a stack overflow / tangled onLayout calls 735 post(new Runnable() { 736 public void run() { 737 shrink(mWaitingToShrinkState, false); 738 mWaitingToShrink = false; 739 } 740 }); 741 } 742 743 if (LauncherApplication.isInPlaceRotationEnabled()) { 744 // When the device is rotated, the scroll position of the current screen 745 // needs to be refreshed 746 setCurrentPage(getCurrentPage()); 747 } 748 } 749 750 @Override 751 protected void onDraw(Canvas canvas) { 752 // Draw the background gradient if necessary 753 if (mBackground != null && mBackgroundAlpha > 0.0f) { 754 int alpha = (int) (mBackgroundAlpha * 255); 755 mBackground.setAlpha(alpha); 756 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), getMeasuredHeight()); 757 mBackground.draw(canvas); 758 if (mDrawCustomizeTrayBackground) { 759 // Find out where to offset the gradient for the customization tray content 760 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 761 final Matrix m = mCustomizationDrawer.getMatrix(); 762 mCustomizationDrawerTransformedPos[0] = 0.0f; 763 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 764 m.mapPoints(mCustomizationDrawerTransformedPos); 765 766 // Draw the bg glow behind the gradient 767 mCustomizeTrayBackground.setAlpha(alpha); 768 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 769 getMeasuredHeight()); 770 mCustomizeTrayBackground.draw(canvas); 771 772 // Draw the bg gradient 773 final int offset = (int) (mCustomizationDrawerPos[1] + 774 mCustomizationDrawerTransformedPos[1]); 775 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 776 offset + getMeasuredHeight()); 777 mBackground.draw(canvas); 778 } 779 } 780 super.onDraw(canvas); 781 } 782 783 @Override 784 protected void dispatchDraw(Canvas canvas) { 785 if (mIsSmall || mIsInUnshrinkAnimation) { 786 // Draw all the workspaces if we're small 787 final int pageCount = getChildCount(); 788 final long drawingTime = getDrawingTime(); 789 for (int i = 0; i < pageCount; i++) { 790 final View page = (View) getChildAt(i); 791 792 drawChild(canvas, page, drawingTime); 793 } 794 } else { 795 super.dispatchDraw(canvas); 796 797 final int width = getWidth(); 798 final int height = getHeight(); 799 800 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 801 if (mInScrollArea && (height > width)) { 802 final int pageHeight = getChildAt(0).getHeight(); 803 804 // This determines the height of the glowing edge: 90% of the page height 805 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 806 807 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 808 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 809 810 if (leftPage != null && leftPage.getHover()) { 811 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 812 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 813 d.draw(canvas); 814 } else if (rightPage != null && rightPage.getHover()) { 815 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 816 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 817 d.draw(canvas); 818 } 819 } 820 821 if (mDropView != null) { 822 // We are animating an item that was just dropped on the home screen. 823 // Render its View in the current animation position. 824 canvas.save(Canvas.MATRIX_SAVE_FLAG); 825 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 826 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 827 canvas.translate(xPos, yPos); 828 mDropView.draw(canvas); 829 canvas.restore(); 830 } 831 } 832 } 833 834 @Override 835 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 836 if (!mLauncher.isAllAppsVisible()) { 837 final Folder openFolder = getOpenFolder(); 838 if (openFolder != null) { 839 return openFolder.requestFocus(direction, previouslyFocusedRect); 840 } else { 841 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 842 } 843 } 844 return false; 845 } 846 847 @Override 848 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 849 if (!mLauncher.isAllAppsVisible()) { 850 final Folder openFolder = getOpenFolder(); 851 if (openFolder != null) { 852 openFolder.addFocusables(views, direction); 853 } else { 854 super.addFocusables(views, direction, focusableMode); 855 } 856 } 857 } 858 859 @Override 860 public boolean dispatchTouchEvent(MotionEvent ev) { 861 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 862 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 863 // ie when you click on a mini-screen, it zooms back to that screen) 864 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 865 return false; 866 } 867 } 868 869 return super.dispatchTouchEvent(ev); 870 } 871 872 void enableChildrenCache(int fromPage, int toPage) { 873 if (fromPage > toPage) { 874 final int temp = fromPage; 875 fromPage = toPage; 876 toPage = temp; 877 } 878 879 final int screenCount = getChildCount(); 880 881 fromPage = Math.max(fromPage, 0); 882 toPage = Math.min(toPage, screenCount - 1); 883 884 for (int i = fromPage; i <= toPage; i++) { 885 final CellLayout layout = (CellLayout) getChildAt(i); 886 layout.setChildrenDrawnWithCacheEnabled(true); 887 layout.setChildrenDrawingCacheEnabled(true); 888 } 889 } 890 891 void clearChildrenCache() { 892 final int screenCount = getChildCount(); 893 for (int i = 0; i < screenCount; i++) { 894 final CellLayout layout = (CellLayout) getChildAt(i); 895 layout.setChildrenDrawnWithCacheEnabled(false); 896 } 897 } 898 899 @Override 900 public boolean onTouchEvent(MotionEvent ev) { 901 if (mLauncher.isAllAppsVisible()) { 902 // Cancel any scrolling that is in progress. 903 if (!mScroller.isFinished()) { 904 mScroller.abortAnimation(); 905 } 906 setCurrentPage(mCurrentPage); 907 908 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 909 mLauncher.showWorkspace(true); 910 // Let the events fall through to the CellLayouts because if they are not 911 // hit, then we get a crash due to a missing ACTION_DOWN touch event 912 } 913 914 return false; // We don't want the events 915 } 916 917 return super.onTouchEvent(ev); 918 } 919 920 @Override 921 protected void onWallpaperTap(MotionEvent ev) { 922 final int[] position = mTempCell; 923 getLocationOnScreen(position); 924 925 int pointerIndex = ev.getActionIndex(); 926 position[0] += (int) ev.getX(pointerIndex); 927 position[1] += (int) ev.getY(pointerIndex); 928 929 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 930 ev.getAction() == MotionEvent.ACTION_UP 931 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 932 position[0], position[1], 0, null); 933 } 934 935 public boolean isSmall() { 936 return mIsSmall; 937 } 938 939 private float getYScaleForScreen(int screen) { 940 int x = Math.abs(screen - 2); 941 942 // TODO: This should be generalized for use with arbitrary rotation angles. 943 switch(x) { 944 case 0: return EXTRA_SCALE_FACTOR_0; 945 case 1: return EXTRA_SCALE_FACTOR_1; 946 case 2: return EXTRA_SCALE_FACTOR_2; 947 } 948 return 1.0f; 949 } 950 951 public void shrink(ShrinkState shrinkState) { 952 shrink(shrinkState, true); 953 } 954 955 // we use this to shrink the workspace for the all apps view and the customize view 956 public void shrink(ShrinkState shrinkState, boolean animated) { 957 if (mFirstLayout) { 958 // (mFirstLayout == "first layout has not happened yet") 959 // if we get a call to shrink() as part of our initialization (for example, if 960 // Launcher is started in All Apps mode) then we need to wait for a layout call 961 // to get our width so we can layout the mini-screen views correctly 962 mWaitingToShrink = true; 963 mWaitingToShrinkState = shrinkState; 964 return; 965 } 966 mIsSmall = true; 967 mShrinkState = shrinkState; 968 969 // Stop any scrolling, move to the current page right away 970 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 971 if (!mIsDragInProcess) { 972 updateWhichPagesAcceptDrops(mShrinkState); 973 } 974 975 // we intercept and reject all touch events when we're small, so be sure to reset the state 976 mTouchState = TOUCH_STATE_REST; 977 mActivePointerId = INVALID_POINTER; 978 979 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 980 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 981 currentPage.setBackgroundAlpha(0.0f); 982 } 983 currentPage.setBackgroundAlphaMultiplier(1.0f); 984 985 final Resources res = getResources(); 986 final int screenWidth = getWidth(); 987 final int screenHeight = getHeight(); 988 989 // Making the assumption that all pages have the same width as the 0th 990 final int pageWidth = getChildAt(0).getMeasuredWidth(); 991 final int pageHeight = getChildAt(0).getMeasuredHeight(); 992 993 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 994 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 995 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 996 997 final int screenCount = getChildCount(); 998 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 999 1000 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1001 float newY = (isPortrait ? 1002 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1003 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1004 float finalAlpha = 1.0f; 1005 float extraShrinkFactor = 1.0f; 1006 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1007 newY = screenHeight - newY - scaledPageHeight; 1008 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1009 1010 // We shrink and disappear to nothing in the case of all apps 1011 // (which is when we shrink to the bottom) 1012 newY = screenHeight - newY - scaledPageHeight; 1013 finalAlpha = 0.0f; 1014 } else if (shrinkState == ShrinkState.MIDDLE) { 1015 newY = screenHeight / 2 - scaledPageHeight / 2; 1016 finalAlpha = 1.0f; 1017 } else if (shrinkState == ShrinkState.TOP) { 1018 newY = (isPortrait ? 1019 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1020 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1021 } 1022 1023 // We animate all the screens to the centered position in workspace 1024 // At the same time, the screens become greyed/dimmed 1025 1026 // newX is initialized to the left-most position of the centered screens 1027 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1028 1029 // We are going to scale about the center of the view, so we need to adjust the positions 1030 // of the views accordingly 1031 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1032 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1033 1034 if (mAnimator != null) { 1035 mAnimator.cancel(); 1036 } 1037 mAnimator = new AnimatorSet(); 1038 for (int i = 0; i < screenCount; i++) { 1039 CellLayout cl = (CellLayout) getChildAt(i); 1040 1041 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1042 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1043 float rotationScaleY = getYScaleForScreen(i); 1044 1045 if (animated) { 1046 final int duration = res.getInteger(R.integer.config_workspaceShrinkTime); 1047 1048 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1049 PropertyValuesHolder.ofFloat("x", newX), 1050 PropertyValuesHolder.ofFloat("y", newY), 1051 PropertyValuesHolder.ofFloat("scaleX", 1052 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1053 PropertyValuesHolder.ofFloat("scaleY", 1054 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1055 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1056 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1057 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1058 1059 animWithInterpolator.setDuration(duration); 1060 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1061 mAnimator.playTogether(animWithInterpolator); 1062 } else { 1063 cl.setX((int)newX); 1064 cl.setY((int)newY); 1065 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1066 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1067 cl.setBackgroundAlpha(finalAlpha); 1068 cl.setAlpha(finalAlpha); 1069 cl.setRotationY(rotation); 1070 } 1071 // increment newX for the next screen 1072 newX += scaledPageWidth + extraScaledSpacing; 1073 } 1074 setLayoutScale(1.0f); 1075 if (animated) { 1076 mAnimator.start(); 1077 } 1078 setChildrenDrawnWithCacheEnabled(true); 1079 1080 if (shrinkState == ShrinkState.TOP) { 1081 showBackgroundGradientForCustomizeTray(); 1082 } else { 1083 showBackgroundGradientForAllApps(); 1084 } 1085 } 1086 1087 /* 1088 * This interpolator emulates the rate at which the perceived scale of an object changes 1089 * as its distance from a camera increases. When this interpolator is applied to a scale 1090 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1091 * from the camera. 1092 */ 1093 static class ZInterpolator implements TimeInterpolator { 1094 private float focalLength; 1095 1096 public ZInterpolator(float foc) { 1097 focalLength = foc; 1098 } 1099 1100 public float getInterpolation(float input) { 1101 return (1.0f - focalLength / (focalLength + input)) / 1102 (1.0f - focalLength / (focalLength + 1.0f)); 1103 } 1104 } 1105 1106 /* 1107 * The exact reverse of ZInterpolator. 1108 */ 1109 static class InverseZInterpolator implements TimeInterpolator { 1110 private ZInterpolator zInterpolator; 1111 public InverseZInterpolator(float foc) { 1112 zInterpolator = new ZInterpolator(foc); 1113 } 1114 public float getInterpolation(float input) { 1115 return 1 - zInterpolator.getInterpolation(1 - input); 1116 } 1117 } 1118 1119 /* 1120 * ZInterpolator compounded with an ease-out. 1121 */ 1122 static class ZoomOutInterpolator implements TimeInterpolator { 1123 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1124 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1125 1126 public float getInterpolation(float input) { 1127 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1128 } 1129 } 1130 1131 /* 1132 * InvereZInterpolator compounded with an ease-out. 1133 */ 1134 static class ZoomInInterpolator implements TimeInterpolator { 1135 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1136 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1137 1138 public float getInterpolation(float input) { 1139 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1140 } 1141 } 1142 1143 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1144 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1145 1146 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1147 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1148 } 1149 1150 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1151 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1152 } 1153 1154 private void updateWhichPagesAcceptDropsHelper( 1155 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1156 final int screenCount = getChildCount(); 1157 for (int i = 0; i < screenCount; i++) { 1158 CellLayout cl = (CellLayout) getChildAt(i); 1159 1160 switch (state) { 1161 case TOP: 1162 if (!isDragHappening) { 1163 boolean showDropHighlight = i == mCurrentPage; 1164 cl.setAcceptsDrops(showDropHighlight); 1165 break; 1166 } 1167 // otherwise, fall through below and mark non-full screens as accepting drops 1168 case BOTTOM_HIDDEN: 1169 case BOTTOM_VISIBLE: 1170 if (!isDragHappening) { 1171 // even if a drag isn't happening, we don't want to show a screen as 1172 // accepting drops if it doesn't have at least one free cell 1173 spanX = 1; 1174 spanY = 1; 1175 } 1176 // the page accepts drops if we can find at least one empty spot 1177 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1178 break; 1179 default: 1180 throw new RuntimeException( 1181 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1182 } 1183 } 1184 } 1185 1186 /* 1187 * 1188 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1189 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1190 * 1191 * These methods mark the appropriate pages as accepting drops (which alters their visual 1192 * appearance). 1193 * 1194 */ 1195 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1196 mIsDragInProcess = true; 1197 1198 final Canvas canvas = new Canvas(); 1199 1200 // We need to add extra padding to the bitmap to make room for the glow effect 1201 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1202 1203 // The outline is used to visualize where the item will land if dropped 1204 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1205 1206 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1207 } 1208 1209 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1210 // never dragged over 1211 public void onDragStopped() { 1212 mIsDragInProcess = false; 1213 updateWhichPagesAcceptDrops(mShrinkState); 1214 } 1215 1216 @Override 1217 protected boolean handlePagingClicks() { 1218 return true; 1219 } 1220 1221 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1222 public void unshrink(CellLayout clThatWasClicked) { 1223 unshrink(clThatWasClicked, false); 1224 } 1225 1226 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1227 int newCurrentPage = indexOfChild(clThatWasClicked); 1228 if (mIsSmall) { 1229 if (springLoaded) { 1230 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1231 } 1232 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1233 unshrink(true, springLoaded); 1234 } 1235 } 1236 1237 1238 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1239 mShrinkState = ShrinkState.SPRING_LOADED; 1240 unshrink(clThatWasClicked, true); 1241 mDragTargetLayout.onDragEnter(); 1242 } 1243 1244 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1245 shrink(shrinkState); 1246 if (mDragTargetLayout != null) { 1247 mDragTargetLayout.onDragExit(); 1248 } 1249 } 1250 1251 void unshrink(boolean animated) { 1252 unshrink(animated, false); 1253 } 1254 1255 void unshrink(boolean animated, boolean springLoaded) { 1256 if (mIsSmall) { 1257 float finalScaleFactor = 1.0f; 1258 float finalBackgroundAlpha = 0.0f; 1259 if (springLoaded) { 1260 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1261 finalBackgroundAlpha = 1.0f; 1262 } else { 1263 mIsSmall = false; 1264 } 1265 if (mAnimator != null) { 1266 mAnimator.cancel(); 1267 } 1268 1269 mAnimator = new AnimatorSet(); 1270 final int screenCount = getChildCount(); 1271 1272 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1273 for (int i = 0; i < screenCount; i++) { 1274 final CellLayout cl = (CellLayout)getChildAt(i); 1275 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1276 float rotation = 0.0f; 1277 1278 if (i < mCurrentPage) { 1279 rotation = WORKSPACE_ROTATION; 1280 } else if (i > mCurrentPage) { 1281 rotation = -WORKSPACE_ROTATION; 1282 } 1283 1284 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1285 1286 if (animated) { 1287 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1288 PropertyValuesHolder.ofFloat("translationX", translation), 1289 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1290 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1291 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1292 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1293 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1294 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1295 animWithInterpolator.setDuration(duration); 1296 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1297 mAnimator.playTogether(animWithInterpolator); 1298 } else { 1299 cl.setTranslationX(translation); 1300 cl.setTranslationY(0.0f); 1301 cl.setScaleX(finalScaleFactor); 1302 cl.setScaleY(finalScaleFactor); 1303 cl.setBackgroundAlpha(0.0f); 1304 cl.setAlpha(finalAlphaValue); 1305 cl.setRotationY(rotation); 1306 } 1307 } 1308 1309 if (animated) { 1310 // If we call this when we're not animated, onAnimationEnd is never called on 1311 // the listener; make sure we only use the listener when we're actually animating 1312 mAnimator.addListener(mUnshrinkAnimationListener); 1313 mAnimator.start(); 1314 } 1315 } 1316 1317 if (!springLoaded) { 1318 hideBackgroundGradient(); 1319 } 1320 } 1321 1322 /** 1323 * Draw the View v into the given Canvas. 1324 * 1325 * @param v the view to draw 1326 * @param destCanvas the canvas to draw on 1327 * @param padding the horizontal and vertical padding to use when drawing 1328 */ 1329 private void drawDragView(View v, Canvas destCanvas, int padding) { 1330 final Rect clipRect = mTempRect; 1331 v.getDrawingRect(clipRect); 1332 1333 // For a TextView, adjust the clip rect so that we don't include the text label 1334 if (v instanceof BubbleTextView) { 1335 final BubbleTextView tv = (BubbleTextView) v; 1336 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1337 tv.getLayout().getLineTop(0); 1338 } else if (v instanceof TextView) { 1339 final TextView tv = (TextView) v; 1340 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1341 tv.getLayout().getLineTop(0); 1342 } 1343 1344 // Draw the View into the bitmap. 1345 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1346 // they set scrollX and scrollY to large values to achieve centered text 1347 1348 destCanvas.save(); 1349 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1350 destCanvas.clipRect(clipRect, Op.REPLACE); 1351 v.draw(destCanvas); 1352 destCanvas.restore(); 1353 } 1354 1355 /** 1356 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1357 * Responsibility for the bitmap is transferred to the caller. 1358 */ 1359 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1360 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1361 final Bitmap b = Bitmap.createBitmap( 1362 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1363 1364 canvas.setBitmap(b); 1365 drawDragView(v, canvas, padding); 1366 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1367 return b; 1368 } 1369 1370 /** 1371 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1372 * Responsibility for the bitmap is transferred to the caller. 1373 */ 1374 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1375 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1376 final Bitmap b = Bitmap.createBitmap( 1377 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1378 1379 canvas.setBitmap(b); 1380 canvas.drawBitmap(orig, 0, 0, new Paint()); 1381 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1382 1383 return b; 1384 } 1385 1386 /** 1387 * Creates a drag outline to represent a drop (that we don't have the actual information for 1388 * yet). May be changed in the future to alter the drop outline slightly depending on the 1389 * clip description mime data. 1390 */ 1391 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1392 Resources r = getResources(); 1393 final int outlineColor = r.getColor(R.color.drag_outline_color); 1394 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1395 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1396 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1397 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1398 final Bitmap b = Bitmap.createBitmap( 1399 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1400 1401 canvas.setBitmap(b); 1402 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1403 rectRadius, rectRadius, mExternalDragOutlinePaint); 1404 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1405 return b; 1406 } 1407 1408 /** 1409 * Returns a new bitmap to show when the given View is being dragged around. 1410 * Responsibility for the bitmap is transferred to the caller. 1411 */ 1412 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1413 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1414 final Bitmap b = Bitmap.createBitmap( 1415 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1416 1417 canvas.setBitmap(b); 1418 canvas.drawBitmap(mDragOutline, 0, 0, null); 1419 drawDragView(v, canvas, padding); 1420 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1421 1422 return b; 1423 } 1424 1425 void startDrag(CellLayout.CellInfo cellInfo) { 1426 View child = cellInfo.cell; 1427 1428 // Make sure the drag was started by a long press as opposed to a long click. 1429 if (!child.isInTouchMode()) { 1430 return; 1431 } 1432 1433 mDragInfo = cellInfo; 1434 mDragInfo.screen = mCurrentPage; 1435 1436 CellLayout current = getCurrentDropLayout(); 1437 1438 current.onDragChild(child); 1439 1440 child.clearFocus(); 1441 child.setPressed(false); 1442 1443 final Canvas canvas = new Canvas(); 1444 1445 // We need to add extra padding to the bitmap to make room for the glow effect 1446 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1447 1448 // The outline is used to visualize where the item will land if dropped 1449 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1450 1451 // The drag bitmap follows the touch point around on the screen 1452 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1453 1454 final int bmpWidth = b.getWidth(); 1455 final int bmpHeight = b.getHeight(); 1456 child.getLocationOnScreen(mTempXY); 1457 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1458 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1459 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1460 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1461 b.recycle(); 1462 } 1463 1464 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1465 boolean insertAtFirst, int intersectX, int intersectY) { 1466 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1467 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1468 1469 final int[] cellXY = new int[2]; 1470 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1471 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1472 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1473 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1474 cellXY[0], cellXY[1]); 1475 } 1476 1477 private void setPositionForDropAnimation( 1478 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1479 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1480 1481 // Based on the position of the drag view, find the top left of the original view 1482 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1483 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1484 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1485 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1486 1487 // Set its old pos (in the new parent's coordinates); it will be animated 1488 // in animateViewIntoPosition after the next layout pass 1489 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1490 lp.oldY = viewY - (parent.getTop() - mScrollY); 1491 } 1492 1493 public void animateViewIntoPosition(final View view) { 1494 final CellLayout parent = (CellLayout) view.getParent(); 1495 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1496 1497 // Convert the animation params to be relative to the Workspace, not the CellLayout 1498 final int fromX = lp.oldX + parent.getLeft(); 1499 final int fromY = lp.oldY + parent.getTop(); 1500 1501 final int dx = lp.x - lp.oldX; 1502 final int dy = lp.y - lp.oldY; 1503 1504 // Calculate the duration of the animation based on the object's distance 1505 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1506 final Resources res = getResources(); 1507 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1508 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1509 if (dist < maxDist) { 1510 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1511 } 1512 1513 if (mDropAnim != null) { 1514 mDropAnim.end(); 1515 } 1516 mDropAnim = new ValueAnimator(); 1517 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1518 1519 // The view is invisible during the animation; we render it manually. 1520 mDropAnim.addListener(new AnimatorListenerAdapter() { 1521 public void onAnimationStart(Animator animation) { 1522 // Set this here so that we don't render it until the animation begins 1523 mDropView = view; 1524 } 1525 1526 public void onAnimationEnd(Animator animation) { 1527 if (mDropView != null) { 1528 mDropView.setVisibility(View.VISIBLE); 1529 mDropView = null; 1530 } 1531 } 1532 }); 1533 1534 mDropAnim.setDuration(duration); 1535 mDropAnim.setFloatValues(0.0f, 1.0f); 1536 mDropAnim.removeAllUpdateListeners(); 1537 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1538 public void onAnimationUpdate(ValueAnimator animation) { 1539 final float percent = (Float) animation.getAnimatedValue(); 1540 // Invalidate the old position 1541 invalidate(mDropViewPos[0], mDropViewPos[1], 1542 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1543 1544 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1545 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1546 invalidate(mDropViewPos[0], mDropViewPos[1], 1547 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1548 } 1549 }); 1550 1551 view.setVisibility(View.INVISIBLE); 1552 mDropAnim.start(); 1553 } 1554 1555 /** 1556 * {@inheritDoc} 1557 */ 1558 public boolean acceptDrop(DragSource source, int x, int y, 1559 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1560 1561 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1562 if (source != this) { 1563 // Don't accept the drop if we're not over a screen at time of drop 1564 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1565 return false; 1566 } 1567 1568 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1569 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1570 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1571 1572 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1573 1574 // Don't accept the drop if there's no room for the item 1575 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1576 mLauncher.showOutOfSpaceMessage(); 1577 return false; 1578 } 1579 } 1580 return true; 1581 } 1582 1583 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1584 DragView dragView, Object dragInfo) { 1585 1586 int originX = x - xOffset; 1587 int originY = y - yOffset; 1588 1589 if (mIsSmall || mIsInUnshrinkAnimation) { 1590 // get originX and originY in the local coordinate system of the screen 1591 mTempOriginXY[0] = originX; 1592 mTempOriginXY[1] = originY; 1593 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1594 originX = (int)mTempOriginXY[0]; 1595 originY = (int)mTempOriginXY[1]; 1596 } 1597 1598 if (source != this) { 1599 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1600 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1601 } else { 1602 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1603 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1604 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1605 } 1606 } else if (mDragInfo != null) { 1607 final View cell = mDragInfo.cell; 1608 CellLayout dropTargetLayout = mDragTargetLayout; 1609 1610 // Handle the case where the user drops when in the scroll area. 1611 // This is treated as a drop on the adjacent page. 1612 if (dropTargetLayout == null && mInScrollArea) { 1613 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1614 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1615 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1616 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1617 } 1618 } 1619 1620 if (dropTargetLayout != null) { 1621 // Move internally 1622 mTargetCell = findNearestVacantArea(originX, originY, 1623 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1624 mTargetCell); 1625 1626 final int screen = (mTargetCell == null) ? 1627 mDragInfo.screen : indexOfChild(dropTargetLayout); 1628 1629 if (screen != mCurrentPage) { 1630 snapToPage(screen); 1631 } 1632 1633 if (mTargetCell != null) { 1634 if (screen != mDragInfo.screen) { 1635 // Reparent the view 1636 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1637 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1638 mDragInfo.spanX, mDragInfo.spanY); 1639 } 1640 1641 // update the item's position after drop 1642 final ItemInfo info = (ItemInfo) cell.getTag(); 1643 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1644 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1645 lp.cellX = mTargetCell[0]; 1646 lp.cellY = mTargetCell[1]; 1647 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1648 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1649 1650 LauncherModel.moveItemInDatabase(mLauncher, info, 1651 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1652 lp.cellX, lp.cellY); 1653 } 1654 } 1655 1656 final CellLayout parent = (CellLayout) cell.getParent(); 1657 1658 // Prepare it to be animated into its new position 1659 // This must be called after the view has been re-parented 1660 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1661 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1662 parent.onDropChild(cell, animateDrop); 1663 } 1664 } 1665 1666 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1667 int yOffset, DragView dragView, Object dragInfo) { 1668 mDragTargetLayout = null; // Reset the drag state 1669 1670 if (!mIsSmall) { 1671 mDragTargetLayout = getCurrentDropLayout(); 1672 mDragTargetLayout.onDragEnter(); 1673 showOutlines(); 1674 } 1675 } 1676 1677 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1678 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1679 1680 if (mIsSmall || mIsInUnshrinkAnimation) { 1681 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1682 return null; 1683 } 1684 // We may need to delegate the drag to a child view. If a 1x1 item 1685 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1686 // then drag events should be handled by that child. 1687 1688 ItemInfo item = (ItemInfo)dragInfo; 1689 CellLayout currentLayout = getCurrentDropLayout(); 1690 1691 int dragPointX, dragPointY; 1692 if (item.spanX == 1 && item.spanY == 1) { 1693 // For a 1x1, calculate the drop cell exactly as in onDragOver 1694 dragPointX = x - xOffset; 1695 dragPointY = y - yOffset; 1696 } else { 1697 // Otherwise, use the exact drag coordinates 1698 dragPointX = x; 1699 dragPointY = y; 1700 } 1701 dragPointX += mScrollX - currentLayout.getLeft(); 1702 dragPointY += mScrollY - currentLayout.getTop(); 1703 1704 // If we are dragging over a cell that contains a DropTarget that will 1705 // accept the drop, delegate to that DropTarget. 1706 final int[] cellXY = mTempCell; 1707 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1708 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1709 if (child instanceof DropTarget) { 1710 DropTarget target = (DropTarget)child; 1711 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1712 return target; 1713 } 1714 } 1715 return null; 1716 } 1717 1718 /** 1719 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1720 * in the returned structure related to the widgets that match the drop (or a null list if it is 1721 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1722 */ 1723 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1724 final LauncherModel model = mLauncher.getModel(); 1725 final ClipDescription desc = event.getClipDescription(); 1726 final int mimeTypeCount = desc.getMimeTypeCount(); 1727 for (int i = 0; i < mimeTypeCount; ++i) { 1728 final String mimeType = desc.getMimeType(i); 1729 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1730 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1731 } else { 1732 final List<WidgetMimeTypeHandlerData> widgets = 1733 model.resolveWidgetsForMimeType(mContext, mimeType); 1734 if (widgets.size() > 0) { 1735 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1736 } 1737 } 1738 } 1739 return null; 1740 } 1741 1742 /** 1743 * Global drag and drop handler 1744 */ 1745 @Override 1746 public boolean onDragEvent(DragEvent event) { 1747 final ClipDescription desc = event.getClipDescription(); 1748 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1749 final int[] pos = new int[2]; 1750 layout.getLocationOnScreen(pos); 1751 // We need to offset the drag coordinates to layout coordinate space 1752 final int x = (int) event.getX() - pos[0]; 1753 final int y = (int) event.getY() - pos[1]; 1754 1755 switch (event.getAction()) { 1756 case DragEvent.ACTION_DRAG_STARTED: { 1757 // Validate this drag 1758 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1759 if (test != null) { 1760 boolean isShortcut = (test.second == null); 1761 if (isShortcut) { 1762 // Check if we have enough space on this screen to add a new shortcut 1763 if (!layout.findCellForSpan(pos, 1, 1)) { 1764 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1765 Toast.LENGTH_SHORT).show(); 1766 return false; 1767 } 1768 } 1769 } else { 1770 // Show error message if we couldn't accept any of the items 1771 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1772 Toast.LENGTH_SHORT).show(); 1773 return false; 1774 } 1775 1776 // Create the drag outline 1777 // We need to add extra padding to the bitmap to make room for the glow effect 1778 final Canvas canvas = new Canvas(); 1779 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1780 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1781 1782 // Show the current page outlines to indicate that we can accept this drop 1783 showOutlines(); 1784 layout.setHover(true); 1785 layout.onDragEnter(); 1786 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1787 1788 return true; 1789 } 1790 case DragEvent.ACTION_DRAG_LOCATION: 1791 // Visualize the drop location 1792 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1793 return true; 1794 case DragEvent.ACTION_DROP: { 1795 // Try and add any shortcuts 1796 int newDropCount = 0; 1797 final LauncherModel model = mLauncher.getModel(); 1798 final ClipData data = event.getClipData(); 1799 1800 // We assume that the mime types are ordered in descending importance of 1801 // representation. So we enumerate the list of mime types and alert the 1802 // user if any widgets can handle the drop. Only the most preferred 1803 // representation will be handled. 1804 pos[0] = x; 1805 pos[1] = y; 1806 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1807 if (test != null) { 1808 final int index = test.first; 1809 final List<WidgetMimeTypeHandlerData> widgets = test.second; 1810 final boolean isShortcut = (widgets == null); 1811 final String mimeType = desc.getMimeType(index); 1812 if (isShortcut) { 1813 final Intent intent = data.getItem(index).getIntent(); 1814 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1815 onDropExternal(x, y, info, layout, false); 1816 } else { 1817 if (widgets.size() == 1) { 1818 // If there is only one item, then go ahead and add and configure 1819 // that widget 1820 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 1821 final PendingAddWidgetInfo createInfo = 1822 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 1823 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 1824 } else { 1825 // Show the widget picker dialog if there is more than one widget 1826 // that can handle this data type 1827 final InstallWidgetReceiver.WidgetListAdapter adapter = 1828 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 1829 data, widgets, layout, mCurrentPage, pos); 1830 final AlertDialog.Builder builder = 1831 new AlertDialog.Builder(mContext); 1832 builder.setAdapter(adapter, adapter); 1833 builder.setCancelable(true); 1834 builder.setTitle(mContext.getString( 1835 R.string.external_drop_widget_pick_title)); 1836 builder.setIcon(R.drawable.ic_no_applications); 1837 builder.show(); 1838 } 1839 } 1840 } 1841 return true; 1842 } 1843 case DragEvent.ACTION_DRAG_ENDED: 1844 // Hide the page outlines after the drop 1845 layout.setHover(false); 1846 layout.onDragExit(); 1847 hideOutlines(); 1848 return true; 1849 } 1850 return super.onDragEvent(event); 1851 } 1852 1853 /* 1854 * 1855 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1856 * coordinate space. The argument xy is modified with the return result. 1857 * 1858 */ 1859 void mapPointFromSelfToChild(View v, float[] xy) { 1860 mapPointFromSelfToChild(v, xy, null); 1861 } 1862 1863 /* 1864 * 1865 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1866 * coordinate space. The argument xy is modified with the return result. 1867 * 1868 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1869 * computing it itself; we use this to avoid redundant matrix inversions in 1870 * findMatchingPageForDragOver 1871 * 1872 */ 1873 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1874 if (cachedInverseMatrix == null) { 1875 v.getMatrix().invert(mTempInverseMatrix); 1876 cachedInverseMatrix = mTempInverseMatrix; 1877 } 1878 xy[0] = xy[0] + mScrollX - v.getLeft(); 1879 xy[1] = xy[1] + mScrollY - v.getTop(); 1880 cachedInverseMatrix.mapPoints(xy); 1881 } 1882 1883 /* 1884 * 1885 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1886 * the parent View's coordinate space. The argument xy is modified with the return result. 1887 * 1888 */ 1889 void mapPointFromChildToSelf(View v, float[] xy) { 1890 v.getMatrix().mapPoints(xy); 1891 xy[0] -= (mScrollX - v.getLeft()); 1892 xy[1] -= (mScrollY - v.getTop()); 1893 } 1894 1895 static private float squaredDistance(float[] point1, float[] point2) { 1896 float distanceX = point1[0] - point2[0]; 1897 float distanceY = point2[1] - point2[1]; 1898 return distanceX * distanceX + distanceY * distanceY; 1899 } 1900 1901 /* 1902 * 1903 * Returns true if the passed CellLayout cl overlaps with dragView 1904 * 1905 */ 1906 boolean overlaps(CellLayout cl, DragView dragView, 1907 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1908 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1909 final float[] draggedItemTopLeft = mTempDragCoordinates; 1910 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1911 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1912 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1913 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1914 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1915 1916 // Transform the dragged item's top left coordinates 1917 // to the CellLayout's local coordinates 1918 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1919 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1920 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1921 1922 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1923 // Transform the dragged item's bottom right coordinates 1924 // to the CellLayout's local coordinates 1925 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1926 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1927 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1928 1929 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1930 float overlap = (overlapRegionRight - overlapRegionLeft) * 1931 (overlapRegionBottom - overlapRegionTop); 1932 if (overlap > 0) { 1933 return true; 1934 } 1935 } 1936 } 1937 return false; 1938 } 1939 1940 /* 1941 * 1942 * This method returns the CellLayout that is currently being dragged to. In order to drag 1943 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 1944 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 1945 * 1946 * Return null if no CellLayout is currently being dragged over 1947 * 1948 */ 1949 private CellLayout findMatchingPageForDragOver( 1950 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 1951 // We loop through all the screens (ie CellLayouts) and see which ones overlap 1952 // with the item being dragged and then choose the one that's closest to the touch point 1953 final int screenCount = getChildCount(); 1954 CellLayout bestMatchingScreen = null; 1955 float smallestDistSoFar = Float.MAX_VALUE; 1956 1957 for (int i = 0; i < screenCount; i++) { 1958 CellLayout cl = (CellLayout)getChildAt(i); 1959 1960 final float[] touchXy = mTempTouchCoordinates; 1961 touchXy[0] = originX + offsetX; 1962 touchXy[1] = originY + offsetY; 1963 1964 // Transform the touch coordinates to the CellLayout's local coordinates 1965 // If the touch point is within the bounds of the cell layout, we can return immediately 1966 cl.getMatrix().invert(mTempInverseMatrix); 1967 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 1968 1969 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 1970 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 1971 return cl; 1972 } 1973 1974 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 1975 // Get the center of the cell layout in screen coordinates 1976 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 1977 cellLayoutCenter[0] = cl.getWidth()/2; 1978 cellLayoutCenter[1] = cl.getHeight()/2; 1979 mapPointFromChildToSelf(cl, cellLayoutCenter); 1980 1981 touchXy[0] = originX + offsetX; 1982 touchXy[1] = originY + offsetY; 1983 1984 // Calculate the distance between the center of the CellLayout 1985 // and the touch point 1986 float dist = squaredDistance(touchXy, cellLayoutCenter); 1987 1988 if (dist < smallestDistSoFar) { 1989 smallestDistSoFar = dist; 1990 bestMatchingScreen = cl; 1991 } 1992 } 1993 } 1994 return bestMatchingScreen; 1995 } 1996 1997 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 1998 DragView dragView, Object dragInfo) { 1999 // When touch is inside the scroll area, skip dragOver actions for the current screen 2000 if (!mInScrollArea) { 2001 CellLayout layout; 2002 int originX = x - xOffset; 2003 int originY = y - yOffset; 2004 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2005 if (shrunken) { 2006 layout = findMatchingPageForDragOver( 2007 dragView, originX, originY, xOffset, yOffset); 2008 2009 if (layout != mDragTargetLayout) { 2010 if (mDragTargetLayout != null) { 2011 mDragTargetLayout.setHover(false); 2012 mSpringLoadedDragController.onDragExit(); 2013 } 2014 mDragTargetLayout = layout; 2015 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2016 mDragTargetLayout.setHover(true); 2017 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2018 } 2019 } 2020 } else { 2021 layout = getCurrentDropLayout(); 2022 if (layout != mDragTargetLayout) { 2023 if (mDragTargetLayout != null) { 2024 mDragTargetLayout.onDragExit(); 2025 } 2026 layout.onDragEnter(); 2027 mDragTargetLayout = layout; 2028 } 2029 } 2030 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2031 layout = getCurrentDropLayout(); 2032 2033 final ItemInfo item = (ItemInfo)dragInfo; 2034 if (dragInfo instanceof LauncherAppWidgetInfo) { 2035 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2036 2037 if (widgetInfo.spanX == -1) { 2038 // Calculate the grid spans needed to fit this widget 2039 int[] spans = layout.rectToCell( 2040 widgetInfo.minWidth, widgetInfo.minHeight, null); 2041 item.spanX = spans[0]; 2042 item.spanY = spans[1]; 2043 } 2044 } 2045 2046 if (source instanceof AllAppsPagedView) { 2047 // This is a hack to fix the point used to determine which cell an icon from 2048 // the all apps screen is over 2049 if (item != null && item.spanX == 1 && layout != null) { 2050 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2051 2052 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2053 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2054 dragView.setDragRegion(dragView.getDragRegionLeft(), 2055 dragView.getDragRegionTop(), 2056 layout.getCellWidth(), 2057 dragView.getDragRegionHeight()); 2058 } 2059 } 2060 } 2061 2062 if (mDragTargetLayout != null) { 2063 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2064 float[] localOrigin = { originX, originY }; 2065 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2066 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2067 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2068 } 2069 } 2070 } 2071 } 2072 2073 public void onDragExit(DragSource source, int x, int y, int xOffset, 2074 int yOffset, DragView dragView, Object dragInfo) { 2075 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2076 if (mDragTargetLayout != null) { 2077 mDragTargetLayout.onDragExit(); 2078 } 2079 if (!mIsPageMoving) { 2080 hideOutlines(); 2081 } 2082 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2083 mLauncher.exitSpringLoadedDragMode(); 2084 } 2085 clearAllHovers(); 2086 } 2087 2088 @Override 2089 public void getHitRect(Rect outRect) { 2090 // We want the workspace to have the whole area of the display (it will find the correct 2091 // cell layout to drop to in the existing drag/drop logic. 2092 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2093 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2094 } 2095 2096 /** 2097 * Add the item specified by dragInfo to the given layout. 2098 * @return true if successful 2099 */ 2100 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2101 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2102 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2103 return true; 2104 } 2105 mLauncher.showOutOfSpaceMessage(); 2106 return false; 2107 } 2108 2109 /** 2110 * Drop an item that didn't originate on one of the workspace screens. 2111 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2112 * come from another app altogether. 2113 * 2114 * NOTE: This can also be called when we are outside of a drag event, when we want 2115 * to add an item to one of the workspace screens. 2116 */ 2117 private void onDropExternal(int x, int y, Object dragInfo, 2118 CellLayout cellLayout, boolean insertAtFirst) { 2119 int screen = indexOfChild(cellLayout); 2120 if (dragInfo instanceof PendingAddItemInfo) { 2121 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2122 // When dragging and dropping from customization tray, we deal with creating 2123 // widgets/shortcuts/folders in a slightly different way 2124 // Only set touchXY if you are supporting spring loaded adding of items 2125 int[] touchXY = new int[2]; 2126 touchXY[0] = x; 2127 touchXY[1] = y; 2128 switch (info.itemType) { 2129 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2130 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2131 break; 2132 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2133 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2134 break; 2135 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2136 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2137 break; 2138 default: 2139 throw new IllegalStateException("Unknown item type: " + info.itemType); 2140 } 2141 cellLayout.onDragExit(); 2142 } else { 2143 // This is for other drag/drop cases, like dragging from All Apps 2144 ItemInfo info = (ItemInfo) dragInfo; 2145 View view = null; 2146 2147 switch (info.itemType) { 2148 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2149 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2150 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2151 // Came from all apps -- make a copy 2152 info = new ShortcutInfo((ApplicationInfo) info); 2153 } 2154 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2155 (ShortcutInfo) info); 2156 break; 2157 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2158 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2159 cellLayout, (UserFolderInfo) info, mIconCache); 2160 break; 2161 default: 2162 throw new IllegalStateException("Unknown item type: " + info.itemType); 2163 } 2164 2165 mTargetCell = new int[2]; 2166 if (x != -1 && y != -1) { 2167 // when dragging and dropping, just find the closest free spot 2168 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2169 } else { 2170 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2171 } 2172 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2173 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2174 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2175 cellLayout.onDropChild(view, animateDrop); 2176 cellLayout.animateDrop(); 2177 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2178 2179 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2180 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2181 lp.cellX, lp.cellY); 2182 } 2183 } 2184 2185 /** 2186 * Return the current {@link CellLayout}, correctly picking the destination 2187 * screen while a scroll is in progress. 2188 */ 2189 private CellLayout getCurrentDropLayout() { 2190 // if we're currently small, use findMatchingPageForDragOver instead 2191 if (mIsSmall) return null; 2192 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2193 return (CellLayout) getChildAt(index); 2194 } 2195 2196 /** 2197 * Return the current CellInfo describing our current drag; this method exists 2198 * so that Launcher can sync this object with the correct info when the activity is created/ 2199 * destroyed 2200 * 2201 */ 2202 public CellLayout.CellInfo getDragInfo() { 2203 return mDragInfo; 2204 } 2205 2206 /** 2207 * Calculate the nearest cell where the given object would be dropped. 2208 */ 2209 private int[] findNearestVacantArea(int pixelX, int pixelY, 2210 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2211 2212 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2213 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2214 2215 // Find the best target drop location 2216 return layout.findNearestVacantArea( 2217 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2218 } 2219 2220 /** 2221 * Estimate the size that a child with the given dimensions will take in the current screen. 2222 */ 2223 void estimateChildSize(int minWidth, int minHeight, int[] result) { 2224 ((CellLayout)getChildAt(mCurrentPage)).estimateChildSize(minWidth, minHeight, result); 2225 } 2226 2227 void setLauncher(Launcher launcher) { 2228 mLauncher = launcher; 2229 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2230 2231 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2232 if (mCustomizationDrawer != null) { 2233 mCustomizationDrawerContent = 2234 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2235 } 2236 } 2237 2238 public void setDragController(DragController dragController) { 2239 mDragController = dragController; 2240 } 2241 2242 public void onDropCompleted(View target, boolean success) { 2243 if (success) { 2244 if (target != this && mDragInfo != null) { 2245 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2246 cellLayout.removeView(mDragInfo.cell); 2247 if (mDragInfo.cell instanceof DropTarget) { 2248 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2249 } 2250 // final Object tag = mDragInfo.cell.getTag(); 2251 } 2252 } else if (mDragInfo != null) { 2253 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2254 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, animateDrop); 2255 } 2256 2257 mDragOutline = null; 2258 mDragInfo = null; 2259 } 2260 2261 @Override 2262 public void onDragViewVisible() { 2263 ((View) mDragInfo.cell).setVisibility(View.GONE); 2264 } 2265 2266 public boolean isDropEnabled() { 2267 return true; 2268 } 2269 2270 @Override 2271 protected void onRestoreInstanceState(Parcelable state) { 2272 super.onRestoreInstanceState(state); 2273 Launcher.setScreen(mCurrentPage); 2274 } 2275 2276 @Override 2277 public void scrollLeft() { 2278 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2279 super.scrollLeft(); 2280 } 2281 } 2282 2283 @Override 2284 public void scrollRight() { 2285 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2286 super.scrollRight(); 2287 } 2288 } 2289 2290 @Override 2291 public void onEnterScrollArea(int direction) { 2292 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2293 mInScrollArea = true; 2294 mPendingScrollDirection = direction; 2295 2296 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2297 final CellLayout layout = (CellLayout) getChildAt(page); 2298 2299 if (layout != null) { 2300 layout.setHover(true); 2301 2302 if (mDragTargetLayout != null) { 2303 mDragTargetLayout.onDragExit(); 2304 mDragTargetLayout = null; 2305 } 2306 } 2307 } 2308 } 2309 2310 private void clearAllHovers() { 2311 final int childCount = getChildCount(); 2312 for (int i = 0; i < childCount; i++) { 2313 ((CellLayout) getChildAt(i)).setHover(false); 2314 } 2315 mSpringLoadedDragController.onDragExit(); 2316 } 2317 2318 @Override 2319 public void onExitScrollArea() { 2320 if (mInScrollArea) { 2321 mInScrollArea = false; 2322 mPendingScrollDirection = DragController.SCROLL_NONE; 2323 clearAllHovers(); 2324 } 2325 } 2326 2327 public Folder getFolderForTag(Object tag) { 2328 final int screenCount = getChildCount(); 2329 for (int screen = 0; screen < screenCount; screen++) { 2330 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2331 int count = currentScreen.getChildCount(); 2332 for (int i = 0; i < count; i++) { 2333 View child = currentScreen.getChildAt(i); 2334 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2335 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2336 Folder f = (Folder) child; 2337 if (f.getInfo() == tag && f.getInfo().opened) { 2338 return f; 2339 } 2340 } 2341 } 2342 } 2343 return null; 2344 } 2345 2346 public View getViewForTag(Object tag) { 2347 int screenCount = getChildCount(); 2348 for (int screen = 0; screen < screenCount; screen++) { 2349 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2350 int count = currentScreen.getChildCount(); 2351 for (int i = 0; i < count; i++) { 2352 View child = currentScreen.getChildAt(i); 2353 if (child.getTag() == tag) { 2354 return child; 2355 } 2356 } 2357 } 2358 return null; 2359 } 2360 2361 2362 void removeItems(final ArrayList<ApplicationInfo> apps) { 2363 final int screenCount = getChildCount(); 2364 final PackageManager manager = getContext().getPackageManager(); 2365 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2366 2367 final HashSet<String> packageNames = new HashSet<String>(); 2368 final int appCount = apps.size(); 2369 for (int i = 0; i < appCount; i++) { 2370 packageNames.add(apps.get(i).componentName.getPackageName()); 2371 } 2372 2373 for (int i = 0; i < screenCount; i++) { 2374 final CellLayout layout = (CellLayout) getChildAt(i); 2375 2376 // Avoid ANRs by treating each screen separately 2377 post(new Runnable() { 2378 public void run() { 2379 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2380 childrenToRemove.clear(); 2381 2382 int childCount = layout.getChildCount(); 2383 for (int j = 0; j < childCount; j++) { 2384 final View view = layout.getChildAt(j); 2385 Object tag = view.getTag(); 2386 2387 if (tag instanceof ShortcutInfo) { 2388 final ShortcutInfo info = (ShortcutInfo) tag; 2389 final Intent intent = info.intent; 2390 final ComponentName name = intent.getComponent(); 2391 2392 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2393 for (String packageName: packageNames) { 2394 if (packageName.equals(name.getPackageName())) { 2395 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2396 childrenToRemove.add(view); 2397 } 2398 } 2399 } 2400 } else if (tag instanceof UserFolderInfo) { 2401 final UserFolderInfo info = (UserFolderInfo) tag; 2402 final ArrayList<ShortcutInfo> contents = info.contents; 2403 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2404 final int contentsCount = contents.size(); 2405 boolean removedFromFolder = false; 2406 2407 for (int k = 0; k < contentsCount; k++) { 2408 final ShortcutInfo appInfo = contents.get(k); 2409 final Intent intent = appInfo.intent; 2410 final ComponentName name = intent.getComponent(); 2411 2412 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2413 for (String packageName: packageNames) { 2414 if (packageName.equals(name.getPackageName())) { 2415 toRemove.add(appInfo); 2416 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2417 removedFromFolder = true; 2418 } 2419 } 2420 } 2421 } 2422 2423 contents.removeAll(toRemove); 2424 if (removedFromFolder) { 2425 final Folder folder = getOpenFolder(); 2426 if (folder != null) 2427 folder.notifyDataSetChanged(); 2428 } 2429 } else if (tag instanceof LiveFolderInfo) { 2430 final LiveFolderInfo info = (LiveFolderInfo) tag; 2431 final Uri uri = info.uri; 2432 final ProviderInfo providerInfo = manager.resolveContentProvider( 2433 uri.getAuthority(), 0); 2434 2435 if (providerInfo != null) { 2436 for (String packageName: packageNames) { 2437 if (packageName.equals(providerInfo.packageName)) { 2438 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2439 childrenToRemove.add(view); 2440 } 2441 } 2442 } 2443 } else if (tag instanceof LauncherAppWidgetInfo) { 2444 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2445 final AppWidgetProviderInfo provider = 2446 widgets.getAppWidgetInfo(info.appWidgetId); 2447 if (provider != null) { 2448 for (String packageName: packageNames) { 2449 if (packageName.equals(provider.provider.getPackageName())) { 2450 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2451 childrenToRemove.add(view); 2452 } 2453 } 2454 } 2455 } 2456 } 2457 2458 childCount = childrenToRemove.size(); 2459 for (int j = 0; j < childCount; j++) { 2460 View child = childrenToRemove.get(j); 2461 layout.removeViewInLayout(child); 2462 if (child instanceof DropTarget) { 2463 mDragController.removeDropTarget((DropTarget)child); 2464 } 2465 } 2466 2467 if (childCount > 0) { 2468 layout.requestLayout(); 2469 layout.invalidate(); 2470 } 2471 } 2472 }); 2473 } 2474 } 2475 2476 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2477 final int screenCount = getChildCount(); 2478 for (int i = 0; i < screenCount; i++) { 2479 final CellLayout layout = (CellLayout) getChildAt(i); 2480 int childCount = layout.getChildCount(); 2481 for (int j = 0; j < childCount; j++) { 2482 final View view = layout.getChildAt(j); 2483 Object tag = view.getTag(); 2484 if (tag instanceof ShortcutInfo) { 2485 ShortcutInfo info = (ShortcutInfo)tag; 2486 // We need to check for ACTION_MAIN otherwise getComponent() might 2487 // return null for some shortcuts (for instance, for shortcuts to 2488 // web pages.) 2489 final Intent intent = info.intent; 2490 final ComponentName name = intent.getComponent(); 2491 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2492 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2493 final int appCount = apps.size(); 2494 for (int k = 0; k < appCount; k++) { 2495 ApplicationInfo app = apps.get(k); 2496 if (app.componentName.equals(name)) { 2497 info.setIcon(mIconCache.getIcon(info.intent)); 2498 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2499 new FastBitmapDrawable(info.getIcon(mIconCache)), 2500 null, null); 2501 } 2502 } 2503 } 2504 } 2505 } 2506 } 2507 } 2508 2509 void moveToDefaultScreen(boolean animate) { 2510 if (mIsSmall || mIsInUnshrinkAnimation) { 2511 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2512 } else if (animate) { 2513 snapToPage(mDefaultPage); 2514 } else { 2515 setCurrentPage(mDefaultPage); 2516 } 2517 getChildAt(mDefaultPage).requestFocus(); 2518 } 2519 2520 void setIndicators(Drawable previous, Drawable next) { 2521 mPreviousIndicator = previous; 2522 mNextIndicator = next; 2523 previous.setLevel(mCurrentPage); 2524 next.setLevel(mCurrentPage); 2525 } 2526 2527 @Override 2528 public void syncPages() { 2529 } 2530 2531 @Override 2532 public void syncPageItems(int page) { 2533 } 2534 2535} 2536