Workspace.java revision 340c5f3a708efa280a120708594247952ca65182
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.PropertyValuesHolder; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Matrix; 48import android.graphics.Paint; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.IBinder; 55import android.os.Parcelable; 56import android.util.AttributeSet; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import java.util.ArrayList; 68import java.util.HashSet; 69import java.util.List; 70 71/** 72 * The workspace is a wide area with a wallpaper and a finite number of pages. 73 * Each page contains a number of icons, folders or widgets the user can 74 * interact with. A workspace is meant to be used with a fixed width only. 75 */ 76public class Workspace extends SmoothPagedView 77 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 78 @SuppressWarnings({"UnusedDeclaration"}) 79 private static final String TAG = "Launcher.Workspace"; 80 81 // This is how much the workspace shrinks when we enter all apps or 82 // customization mode 83 private static final float SHRINK_FACTOR = 0.16f; 84 85 // How much the screens shrink when we enter spring loaded drag mode 86 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 87 88 // Y rotation to apply to the workspace screens 89 private static final float WORKSPACE_ROTATION = 12.5f; 90 91 // These are extra scale factors to apply to the mini home screens 92 // so as to achieve the desired transform 93 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 94 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 95 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 96 97 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 99 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 100 101 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 102 private static final int BACKGROUND_FADE_IN_DURATION = 350; 103 104 // These animators are used to fade the children's outlines 105 private ObjectAnimator mChildrenOutlineFadeInAnimation; 106 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 107 private float mChildrenOutlineAlpha = 0; 108 109 // These properties refer to the background protection gradient used for AllApps and Customize 110 private ObjectAnimator mBackgroundFadeInAnimation; 111 private ObjectAnimator mBackgroundFadeOutAnimation; 112 private Drawable mBackground; 113 private Drawable mCustomizeTrayBackground; 114 private boolean mDrawCustomizeTrayBackground; 115 private float mBackgroundAlpha = 0; 116 private float mOverScrollMaxBackgroundAlpha = 0.0f; 117 private int mOverScrollPageIndex = -1; 118 119 private View mCustomizationDrawer; 120 private View mCustomizationDrawerContent; 121 private int[] mCustomizationDrawerPos = new int[2]; 122 private float[] mCustomizationDrawerTransformedPos = new float[2]; 123 124 private final WallpaperManager mWallpaperManager; 125 126 private int mDefaultPage; 127 128 private boolean mPageMoving = false; 129 private boolean mIsDragInProcess = false; 130 131 /** 132 * CellInfo for the cell that is currently being dragged 133 */ 134 private CellLayout.CellInfo mDragInfo; 135 136 /** 137 * Target drop area calculated during last acceptDrop call. 138 */ 139 private int[] mTargetCell = null; 140 141 /** 142 * The CellLayout that is currently being dragged over 143 */ 144 private CellLayout mDragTargetLayout = null; 145 146 private Launcher mLauncher; 147 private IconCache mIconCache; 148 private DragController mDragController; 149 150 // These are temporary variables to prevent having to allocate a new object just to 151 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 152 private int[] mTempCell = new int[2]; 153 private int[] mTempEstimate = new int[2]; 154 private float[] mTempOriginXY = new float[2]; 155 private float[] mTempDragCoordinates = new float[2]; 156 private float[] mTempTouchCoordinates = new float[2]; 157 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 158 private float[] mTempDragBottomRightCoordinates = new float[2]; 159 private Matrix mTempInverseMatrix = new Matrix(); 160 161 private SpringLoadedDragController mSpringLoadedDragController; 162 163 private static final int DEFAULT_CELL_COUNT_X = 4; 164 private static final int DEFAULT_CELL_COUNT_Y = 4; 165 166 private Drawable mPreviousIndicator; 167 private Drawable mNextIndicator; 168 169 // State variable that indicates whether the pages are small (ie when you're 170 // in all apps or customize mode) 171 private boolean mIsSmall = false; 172 private boolean mIsInUnshrinkAnimation = false; 173 private AnimatorListener mShrinkAnimationListener; 174 private AnimatorListener mUnshrinkAnimationListener; 175 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 176 private ShrinkState mShrinkState; 177 private boolean mWasSpringLoadedOnDragExit = false; 178 private boolean mWaitingToShrink = false; 179 private ShrinkState mWaitingToShrinkState; 180 private AnimatorSet mAnimator; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 /** If mInScrollArea is true, the direction of the scroll. */ 186 private int mPendingScrollDirection = DragController.SCROLL_NONE; 187 188 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 189 private Bitmap mDragOutline = null; 190 private final Rect mTempRect = new Rect(); 191 private final int[] mTempXY = new int[2]; 192 193 private ValueAnimator mDropAnim = null; 194 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 195 private View mDropView = null; 196 private int[] mDropViewPos = new int[] { -1, -1 }; 197 198 // Paint used to draw external drop outline 199 private final Paint mExternalDragOutlinePaint = new Paint(); 200 201 // Camera and Matrix used to determine the final position of a neighboring CellLayout 202 private final Matrix mMatrix = new Matrix(); 203 private final Camera mCamera = new Camera(); 204 private final float mTempFloat2[] = new float[2]; 205 206 /** 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 disableCacheUpdates(); 271 } 272 @Override 273 public void onAnimationEnd(Animator animation) { 274 mIsInUnshrinkAnimation = false; 275 if (mShrinkState != ShrinkState.SPRING_LOADED) { 276 mDrawCustomizeTrayBackground = false; 277 } 278 enableCacheUpdates(); 279 } 280 }; 281 mShrinkAnimationListener = new AnimatorListenerAdapter() { 282 @Override 283 public void onAnimationStart(Animator animation) { 284 disableCacheUpdates(); 285 } 286 @Override 287 public void onAnimationEnd(Animator animation) { 288 enableCacheUpdates(); 289 } 290 }; 291 mSnapVelocity = 600; 292 } 293 294 @Override 295 protected int getScrollMode() { 296 if (LauncherApplication.isScreenXLarge()) { 297 return SmoothPagedView.X_LARGE_MODE; 298 } else { 299 return SmoothPagedView.DEFAULT_MODE; 300 } 301 } 302 303 @Override 304 public void addView(View child, int index, LayoutParams params) { 305 if (!(child instanceof CellLayout)) { 306 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 307 } 308 ((CellLayout) child).setOnInterceptTouchListener(this); 309 super.addView(child, index, params); 310 } 311 312 @Override 313 public void addView(View child) { 314 if (!(child instanceof CellLayout)) { 315 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 316 } 317 ((CellLayout) child).setOnInterceptTouchListener(this); 318 super.addView(child); 319 } 320 321 @Override 322 public void addView(View child, int index) { 323 if (!(child instanceof CellLayout)) { 324 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 325 } 326 ((CellLayout) child).setOnInterceptTouchListener(this); 327 super.addView(child, index); 328 } 329 330 @Override 331 public void addView(View child, int width, int height) { 332 if (!(child instanceof CellLayout)) { 333 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 334 } 335 ((CellLayout) child).setOnInterceptTouchListener(this); 336 super.addView(child, width, height); 337 } 338 339 @Override 340 public void addView(View child, LayoutParams params) { 341 if (!(child instanceof CellLayout)) { 342 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 343 } 344 ((CellLayout) child).setOnInterceptTouchListener(this); 345 super.addView(child, params); 346 } 347 348 /** 349 * @return The open folder on the current screen, or null if there is none 350 */ 351 Folder getOpenFolder() { 352 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 353 int count = currentPage.getChildCount(); 354 for (int i = 0; i < count; i++) { 355 View child = currentPage.getChildAt(i); 356 if (child instanceof Folder) { 357 Folder folder = (Folder) child; 358 if (folder.getInfo().opened) 359 return folder; 360 } 361 } 362 return null; 363 } 364 365 ArrayList<Folder> getOpenFolders() { 366 final int screenCount = getChildCount(); 367 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 368 369 for (int screen = 0; screen < screenCount; screen++) { 370 CellLayout currentPage = (CellLayout) getChildAt(screen); 371 int count = currentPage.getChildCount(); 372 for (int i = 0; i < count; i++) { 373 View child = currentPage.getChildAt(i); 374 if (child instanceof Folder) { 375 Folder folder = (Folder) child; 376 if (folder.getInfo().opened) 377 folders.add(folder); 378 break; 379 } 380 } 381 } 382 return folders; 383 } 384 385 boolean isDefaultPageShowing() { 386 return mCurrentPage == mDefaultPage; 387 } 388 389 /** 390 * Sets the current screen. 391 * 392 * @param currentPage 393 */ 394 @Override 395 void setCurrentPage(int currentPage) { 396 super.setCurrentPage(currentPage); 397 updateWallpaperOffset(); 398 } 399 400 /** 401 * Adds the specified child in the specified screen. The position and dimension of 402 * the child are defined by x, y, spanX and spanY. 403 * 404 * @param child The child to add in one of the workspace's screens. 405 * @param screen The screen in which to add the child. 406 * @param x The X position of the child in the screen's grid. 407 * @param y The Y position of the child in the screen's grid. 408 * @param spanX The number of cells spanned horizontally by the child. 409 * @param spanY The number of cells spanned vertically by the child. 410 */ 411 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 412 addInScreen(child, screen, x, y, spanX, spanY, false); 413 } 414 415 void addInFullScreen(View child, int screen) { 416 addInScreen(child, screen, 0, 0, -1, -1); 417 } 418 419 /** 420 * Adds the specified child in the specified screen. The position and dimension of 421 * the child are defined by x, y, spanX and spanY. 422 * 423 * @param child The child to add in one of the workspace's screens. 424 * @param screen The screen in which to add the child. 425 * @param x The X position of the child in the screen's grid. 426 * @param y The Y position of the child in the screen's grid. 427 * @param spanX The number of cells spanned horizontally by the child. 428 * @param spanY The number of cells spanned vertically by the child. 429 * @param insert When true, the child is inserted at the beginning of the children list. 430 */ 431 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 432 if (screen < 0 || screen >= getChildCount()) { 433 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 434 + " (was " + screen + "); skipping child"); 435 return; 436 } 437 438 final CellLayout group = (CellLayout) getChildAt(screen); 439 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 440 if (lp == null) { 441 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 442 } else { 443 lp.cellX = x; 444 lp.cellY = y; 445 lp.cellHSpan = spanX; 446 lp.cellVSpan = spanY; 447 } 448 449 // Get the canonical child id to uniquely represent this view in this screen 450 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 451 boolean markCellsAsOccupied = !(child instanceof Folder); 452 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 453 // TODO: This branch occurs when the workspace is adding views 454 // outside of the defined grid 455 // maybe we should be deleting these items from the LauncherModel? 456 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 457 } 458 459 if (!(child instanceof Folder)) { 460 child.setHapticFeedbackEnabled(false); 461 child.setOnLongClickListener(mLongClickListener); 462 } 463 if (child instanceof DropTarget) { 464 mDragController.addDropTarget((DropTarget) child); 465 } 466 } 467 468 public boolean onTouch(View v, MotionEvent event) { 469 // this is an intercepted event being forwarded from a cell layout 470 if (mIsSmall || mIsInUnshrinkAnimation) { 471 // Only allow clicks on a CellLayout if it is visible 472 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 473 mLauncher.onWorkspaceClick((CellLayout) v); 474 } 475 return true; 476 } else if (!mPageMoving) { 477 if (v == getChildAt(mCurrentPage - 1)) { 478 snapToPage(mCurrentPage - 1); 479 return true; 480 } else if (v == getChildAt(mCurrentPage + 1)) { 481 snapToPage(mCurrentPage + 1); 482 return true; 483 } 484 } 485 return false; 486 } 487 488 protected void onWindowVisibilityChanged (int visibility) { 489 mLauncher.onWindowVisibilityChanged(visibility); 490 } 491 492 @Override 493 public boolean dispatchUnhandledMove(View focused, int direction) { 494 if (mIsSmall || mIsInUnshrinkAnimation) { 495 // when the home screens are shrunken, shouldn't allow side-scrolling 496 return false; 497 } 498 return super.dispatchUnhandledMove(focused, direction); 499 } 500 501 @Override 502 public boolean onInterceptTouchEvent(MotionEvent ev) { 503 if (mIsSmall || mIsInUnshrinkAnimation) { 504 if (mLauncher.isAllAppsVisible() && 505 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 506 // Intercept this event so we can show the workspace in full view 507 // when it is clicked on and it is small 508 return true; 509 } 510 return false; 511 } 512 return super.onInterceptTouchEvent(ev); 513 } 514 515 @Override 516 protected void determineScrollingStart(MotionEvent ev) { 517 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 518 } 519 520 protected void onPageBeginMoving() { 521 if (mNextPage != INVALID_PAGE) { 522 // we're snapping to a particular screen 523 enableChildrenCache(mCurrentPage, mNextPage); 524 } else { 525 // this is when user is actively dragging a particular screen, they might 526 // swipe it either left or right (but we won't advance by more than one screen) 527 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 528 } 529 showOutlines(); 530 mPageMoving = true; 531 } 532 533 protected void onPageEndMoving() { 534 clearChildrenCache(); 535 // Hide the outlines, as long as we're not dragging 536 if (!mDragController.dragging()) { 537 hideOutlines(); 538 } 539 mOverScrollMaxBackgroundAlpha = 0.0f; 540 mOverScrollPageIndex = -1; 541 mPageMoving = false; 542 } 543 544 @Override 545 protected void notifyPageSwitchListener() { 546 super.notifyPageSwitchListener(); 547 548 if (mPreviousIndicator != null) { 549 // if we know the next page, we show the indication for it right away; it looks 550 // weird if the indicators are lagging 551 int page = mNextPage; 552 if (page == INVALID_PAGE) { 553 page = mCurrentPage; 554 } 555 mPreviousIndicator.setLevel(page); 556 mNextIndicator.setLevel(page); 557 } 558 Launcher.setScreen(mCurrentPage); 559 }; 560 561 private void updateWallpaperOffset() { 562 if (LauncherApplication.isScreenXLarge()) { 563 IBinder token = getWindowToken(); 564 int scrollRange = getChildOffset(getChildCount() - 1) - getChildOffset(0); 565 if (token != null) { 566 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0); 567 float offset = mScrollX / (float) scrollRange; 568 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 569 Math.max(0.f, Math.min(offset, 1.0f)), 0); 570 } 571 } 572 } 573 574 @Override 575 public void computeScroll() { 576 super.computeScroll(); 577 updateWallpaperOffset(); 578 } 579 580 public void showOutlines() { 581 if (!mIsSmall && !mIsInUnshrinkAnimation) { 582 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 583 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 584 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 585 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 586 mChildrenOutlineFadeInAnimation.start(); 587 } 588 } 589 590 public void hideOutlines() { 591 if (!mIsSmall && !mIsInUnshrinkAnimation) { 592 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 593 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 594 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 595 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 596 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 597 mChildrenOutlineFadeOutAnimation.start(); 598 } 599 } 600 601 public void setChildrenOutlineAlpha(float alpha) { 602 mChildrenOutlineAlpha = alpha; 603 for (int i = 0; i < getChildCount(); i++) { 604 CellLayout cl = (CellLayout) getChildAt(i); 605 cl.setBackgroundAlpha(alpha); 606 } 607 } 608 609 public float getChildrenOutlineAlpha() { 610 return mChildrenOutlineAlpha; 611 } 612 613 private void showBackgroundGradientForAllApps() { 614 showBackgroundGradient(); 615 mDrawCustomizeTrayBackground = false; 616 } 617 618 private void showBackgroundGradientForCustomizeTray() { 619 showBackgroundGradient(); 620 mDrawCustomizeTrayBackground = true; 621 } 622 623 private void showBackgroundGradient() { 624 if (mBackground == null) return; 625 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 626 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 627 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 628 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 629 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 630 mBackgroundFadeInAnimation.start(); 631 } 632 633 private void hideBackgroundGradient() { 634 if (mBackground == null) return; 635 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 636 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 637 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 638 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 639 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 640 mBackgroundFadeOutAnimation.start(); 641 } 642 643 public void setBackgroundAlpha(float alpha) { 644 mBackgroundAlpha = alpha; 645 invalidate(); 646 } 647 648 public float getBackgroundAlpha() { 649 return mBackgroundAlpha; 650 } 651 652 /** 653 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 654 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 655 * as being larger. This method computes what offset the rotated view should be translated 656 * in order to minimize this perceived gap. 657 * @param degrees Angle of the view 658 * @param width Width of the view 659 * @param height Height of the view 660 * @return Offset to be used in a View.setTranslationX() call 661 */ 662 private float getOffsetXForRotation(float degrees, int width, int height) { 663 mMatrix.reset(); 664 mCamera.save(); 665 mCamera.rotateY(Math.abs(degrees)); 666 mCamera.getMatrix(mMatrix); 667 mCamera.restore(); 668 669 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 670 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 671 mTempFloat2[0] = width; 672 mTempFloat2[1] = height; 673 mMatrix.mapPoints(mTempFloat2); 674 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 675 } 676 677 float backgroundAlphaInterpolator(float r) { 678 float pivotA = 0.1f; 679 float pivotB = 0.4f; 680 if (r < pivotA) { 681 return 0; 682 } else if (r > pivotB) { 683 return 1.0f; 684 } else { 685 return (r - pivotA)/(pivotB - pivotA); 686 } 687 } 688 689 float overScrollBackgroundAlphaInterpolator(float r) { 690 float threshold = 0.08f; 691 692 if (r > mOverScrollMaxBackgroundAlpha) { 693 mOverScrollMaxBackgroundAlpha = r; 694 } else if (r < mOverScrollMaxBackgroundAlpha) { 695 r = mOverScrollMaxBackgroundAlpha; 696 } 697 698 return Math.min(r / threshold, 1.0f); 699 } 700 701 @Override 702 protected void screenScrolled(int screenCenter) { 703 final int halfScreenSize = getMeasuredWidth() / 2; 704 705 for (int i = 0; i < getChildCount(); i++) { 706 CellLayout cl = (CellLayout) getChildAt(i); 707 if (cl != null) { 708 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 709 int delta = screenCenter - (getChildOffset(i) - 710 getRelativeChildOffset(i) + halfScreenSize); 711 712 float scrollProgress = delta / (totalDistance * 1.0f); 713 scrollProgress = Math.min(scrollProgress, 1.0f); 714 scrollProgress = Math.max(scrollProgress, -1.0f); 715 716 // If the current page (i) is being overscrolled, we use a different 717 // set of rules for setting the background alpha multiplier. 718 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 719 i == getChildCount() -1 )) { 720 cl.setBackgroundAlphaMultiplier( 721 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 722 mOverScrollPageIndex = i; 723 } else if (mOverScrollPageIndex != i) { 724 cl.setBackgroundAlphaMultiplier( 725 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 726 727 } 728 729 float rotation = WORKSPACE_ROTATION * scrollProgress; 730 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 731 cl.setTranslationX(translationX); 732 733 cl.setRotationY(rotation); 734 } 735 } 736 } 737 738 protected void onAttachedToWindow() { 739 super.onAttachedToWindow(); 740 computeScroll(); 741 mDragController.setWindowToken(getWindowToken()); 742 } 743 744 @Override 745 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 746 super.onLayout(changed, left, top, right, bottom); 747 748 // if shrinkToBottom() is called on initialization, it has to be deferred 749 // until after the first call to onLayout so that it has the correct width 750 if (mWaitingToShrink) { 751 // shrink can trigger a synchronous onLayout call, so we 752 // post this to avoid a stack overflow / tangled onLayout calls 753 post(new Runnable() { 754 public void run() { 755 shrink(mWaitingToShrinkState, false); 756 mWaitingToShrink = false; 757 } 758 }); 759 } 760 761 if (LauncherApplication.isInPlaceRotationEnabled()) { 762 // When the device is rotated, the scroll position of the current screen 763 // needs to be refreshed 764 setCurrentPage(getCurrentPage()); 765 } 766 } 767 768 public void enableCacheUpdates() { 769 final int pageCount = getChildCount(); 770 for (int i = 0; i < pageCount; i++) { 771 final CellLayout page = (CellLayout) getChildAt(i); 772 page.enableCacheUpdates(); 773 } 774 } 775 776 public void disableCacheUpdates() { 777 final int pageCount = getChildCount(); 778 for (int i = 0; i < pageCount; i++) { 779 final CellLayout page = (CellLayout) getChildAt(i); 780 page.disableCacheUpdates(); 781 } 782 } 783 784 @Override 785 protected void onDraw(Canvas canvas) { 786 // Draw the background gradient if necessary 787 if (mBackground != null && mBackgroundAlpha > 0.0f) { 788 int alpha = (int) (mBackgroundAlpha * 255); 789 if (mDrawCustomizeTrayBackground) { 790 // Find out where to offset the gradient for the customization tray content 791 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 792 final Matrix m = mCustomizationDrawer.getMatrix(); 793 mCustomizationDrawerTransformedPos[0] = 0.0f; 794 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 795 m.mapPoints(mCustomizationDrawerTransformedPos); 796 797 // Draw the bg glow behind the gradient 798 mCustomizeTrayBackground.setAlpha(alpha); 799 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 800 getMeasuredHeight()); 801 mCustomizeTrayBackground.draw(canvas); 802 803 // Draw the bg gradient 804 final int offset = (int) (mCustomizationDrawerPos[1] + 805 mCustomizationDrawerTransformedPos[1]); 806 mBackground.setAlpha(alpha); 807 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 808 offset + getMeasuredHeight()); 809 mBackground.draw(canvas); 810 } else { 811 mBackground.setAlpha(alpha); 812 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 813 getMeasuredHeight()); 814 mBackground.draw(canvas); 815 } 816 } 817 super.onDraw(canvas); 818 } 819 820 @Override 821 protected void dispatchDraw(Canvas canvas) { 822 if (mIsSmall || mIsInUnshrinkAnimation) { 823 // Draw all the workspaces if we're small 824 final int pageCount = getChildCount(); 825 final long drawingTime = getDrawingTime(); 826 for (int i = 0; i < pageCount; i++) { 827 final View page = (View) getChildAt(i); 828 829 drawChild(canvas, page, drawingTime); 830 } 831 } else { 832 super.dispatchDraw(canvas); 833 834 final int width = getWidth(); 835 final int height = getHeight(); 836 837 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 838 if (mInScrollArea && (height > width)) { 839 final int pageHeight = getChildAt(0).getHeight(); 840 841 // This determines the height of the glowing edge: 90% of the page height 842 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 843 844 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 845 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 846 847 if (leftPage != null && leftPage.getIsDragOverlapping()) { 848 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 849 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 850 d.draw(canvas); 851 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 852 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 853 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 854 d.draw(canvas); 855 } 856 } 857 858 if (mDropView != null) { 859 // We are animating an item that was just dropped on the home screen. 860 // Render its View in the current animation position. 861 canvas.save(Canvas.MATRIX_SAVE_FLAG); 862 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 863 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 864 canvas.translate(xPos, yPos); 865 mDropView.draw(canvas); 866 canvas.restore(); 867 } 868 } 869 } 870 871 @Override 872 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 873 if (!mLauncher.isAllAppsVisible()) { 874 final Folder openFolder = getOpenFolder(); 875 if (openFolder != null) { 876 return openFolder.requestFocus(direction, previouslyFocusedRect); 877 } else { 878 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 879 } 880 } 881 return false; 882 } 883 884 @Override 885 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 886 if (!mLauncher.isAllAppsVisible()) { 887 final Folder openFolder = getOpenFolder(); 888 if (openFolder != null) { 889 openFolder.addFocusables(views, direction); 890 } else { 891 super.addFocusables(views, direction, focusableMode); 892 } 893 } 894 } 895 896 @Override 897 public boolean dispatchTouchEvent(MotionEvent ev) { 898 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 899 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 900 // ie when you click on a mini-screen, it zooms back to that screen) 901 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 902 return false; 903 } 904 } 905 906 return super.dispatchTouchEvent(ev); 907 } 908 909 void enableChildrenCache(int fromPage, int toPage) { 910 if (fromPage > toPage) { 911 final int temp = fromPage; 912 fromPage = toPage; 913 toPage = temp; 914 } 915 916 final int screenCount = getChildCount(); 917 918 fromPage = Math.max(fromPage, 0); 919 toPage = Math.min(toPage, screenCount - 1); 920 921 for (int i = fromPage; i <= toPage; i++) { 922 final CellLayout layout = (CellLayout) getChildAt(i); 923 layout.setChildrenDrawnWithCacheEnabled(true); 924 layout.setChildrenDrawingCacheEnabled(true); 925 } 926 } 927 928 void clearChildrenCache() { 929 final int screenCount = getChildCount(); 930 for (int i = 0; i < screenCount; i++) { 931 final CellLayout layout = (CellLayout) getChildAt(i); 932 layout.setChildrenDrawnWithCacheEnabled(false); 933 } 934 } 935 936 @Override 937 public boolean onTouchEvent(MotionEvent ev) { 938 if (mLauncher.isAllAppsVisible()) { 939 // Cancel any scrolling that is in progress. 940 if (!mScroller.isFinished()) { 941 mScroller.abortAnimation(); 942 } 943 setCurrentPage(mCurrentPage); 944 945 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 946 mLauncher.showWorkspace(true); 947 // Let the events fall through to the CellLayouts because if they are not 948 // hit, then we get a crash due to a missing ACTION_DOWN touch event 949 } 950 951 return false; // We don't want the events 952 } 953 954 return super.onTouchEvent(ev); 955 } 956 957 @Override 958 protected void onWallpaperTap(MotionEvent ev) { 959 final int[] position = mTempCell; 960 getLocationOnScreen(position); 961 962 int pointerIndex = ev.getActionIndex(); 963 position[0] += (int) ev.getX(pointerIndex); 964 position[1] += (int) ev.getY(pointerIndex); 965 966 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 967 ev.getAction() == MotionEvent.ACTION_UP 968 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 969 position[0], position[1], 0, null); 970 } 971 972 public boolean isSmall() { 973 return mIsSmall; 974 } 975 976 private float getYScaleForScreen(int screen) { 977 int x = Math.abs(screen - 2); 978 979 // TODO: This should be generalized for use with arbitrary rotation angles. 980 switch(x) { 981 case 0: return EXTRA_SCALE_FACTOR_0; 982 case 1: return EXTRA_SCALE_FACTOR_1; 983 case 2: return EXTRA_SCALE_FACTOR_2; 984 } 985 return 1.0f; 986 } 987 988 public void shrink(ShrinkState shrinkState) { 989 shrink(shrinkState, true); 990 } 991 992 // we use this to shrink the workspace for the all apps view and the customize view 993 public void shrink(ShrinkState shrinkState, boolean animated) { 994 if (mFirstLayout) { 995 // (mFirstLayout == "first layout has not happened yet") 996 // if we get a call to shrink() as part of our initialization (for example, if 997 // Launcher is started in All Apps mode) then we need to wait for a layout call 998 // to get our width so we can layout the mini-screen views correctly 999 mWaitingToShrink = true; 1000 mWaitingToShrinkState = shrinkState; 1001 return; 1002 } 1003 mIsSmall = true; 1004 mShrinkState = shrinkState; 1005 1006 // Stop any scrolling, move to the current page right away 1007 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1008 if (!mIsDragInProcess) { 1009 updateWhichPagesAcceptDrops(mShrinkState); 1010 } 1011 1012 // we intercept and reject all touch events when we're small, so be sure to reset the state 1013 mTouchState = TOUCH_STATE_REST; 1014 mActivePointerId = INVALID_POINTER; 1015 1016 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1017 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1018 currentPage.setBackgroundAlpha(0.0f); 1019 } 1020 currentPage.setBackgroundAlphaMultiplier(1.0f); 1021 1022 final Resources res = getResources(); 1023 final int screenWidth = getWidth(); 1024 final int screenHeight = getHeight(); 1025 1026 // Making the assumption that all pages have the same width as the 0th 1027 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1028 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1029 1030 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1031 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1032 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1033 1034 final int screenCount = getChildCount(); 1035 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1036 1037 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1038 float newY = (isPortrait ? 1039 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1040 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1041 float finalAlpha = 1.0f; 1042 float extraShrinkFactor = 1.0f; 1043 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1044 newY = screenHeight - newY - scaledPageHeight; 1045 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1046 1047 // We shrink and disappear to nothing in the case of all apps 1048 // (which is when we shrink to the bottom) 1049 newY = screenHeight - newY - scaledPageHeight; 1050 finalAlpha = 0.0f; 1051 } else if (shrinkState == ShrinkState.MIDDLE) { 1052 newY = screenHeight / 2 - scaledPageHeight / 2; 1053 finalAlpha = 1.0f; 1054 } else if (shrinkState == ShrinkState.TOP) { 1055 newY = (isPortrait ? 1056 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1057 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1058 } 1059 1060 // We animate all the screens to the centered position in workspace 1061 // At the same time, the screens become greyed/dimmed 1062 1063 // newX is initialized to the left-most position of the centered screens 1064 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1065 1066 // We are going to scale about the center of the view, so we need to adjust the positions 1067 // of the views accordingly 1068 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1069 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1070 1071 if (mAnimator != null) { 1072 mAnimator.cancel(); 1073 } 1074 mAnimator = new AnimatorSet(); 1075 for (int i = 0; i < screenCount; i++) { 1076 CellLayout cl = (CellLayout) getChildAt(i); 1077 1078 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1079 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1080 float rotationScaleY = getYScaleForScreen(i); 1081 1082 if (animated) { 1083 final int duration = res.getInteger(R.integer.config_workspaceShrinkTime); 1084 1085 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1086 PropertyValuesHolder.ofFloat("x", newX), 1087 PropertyValuesHolder.ofFloat("y", newY), 1088 PropertyValuesHolder.ofFloat("scaleX", 1089 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1090 PropertyValuesHolder.ofFloat("scaleY", 1091 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1092 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1093 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1094 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1095 1096 animWithInterpolator.setDuration(duration); 1097 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1098 mAnimator.playTogether(animWithInterpolator); 1099 } else { 1100 cl.setX((int)newX); 1101 cl.setY((int)newY); 1102 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1103 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1104 cl.setBackgroundAlpha(finalAlpha); 1105 cl.setAlpha(finalAlpha); 1106 cl.setRotationY(rotation); 1107 mShrinkAnimationListener.onAnimationEnd(null); 1108 } 1109 // increment newX for the next screen 1110 newX += scaledPageWidth + extraScaledSpacing; 1111 } 1112 setLayoutScale(1.0f); 1113 if (animated) { 1114 mAnimator.addListener(mShrinkAnimationListener); 1115 mAnimator.start(); 1116 } 1117 setChildrenDrawnWithCacheEnabled(true); 1118 1119 if (shrinkState == ShrinkState.TOP) { 1120 showBackgroundGradientForCustomizeTray(); 1121 } else { 1122 showBackgroundGradientForAllApps(); 1123 } 1124 } 1125 1126 /* 1127 * This interpolator emulates the rate at which the perceived scale of an object changes 1128 * as its distance from a camera increases. When this interpolator is applied to a scale 1129 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1130 * from the camera. 1131 */ 1132 static class ZInterpolator implements TimeInterpolator { 1133 private float focalLength; 1134 1135 public ZInterpolator(float foc) { 1136 focalLength = foc; 1137 } 1138 1139 public float getInterpolation(float input) { 1140 return (1.0f - focalLength / (focalLength + input)) / 1141 (1.0f - focalLength / (focalLength + 1.0f)); 1142 } 1143 } 1144 1145 /* 1146 * The exact reverse of ZInterpolator. 1147 */ 1148 static class InverseZInterpolator implements TimeInterpolator { 1149 private ZInterpolator zInterpolator; 1150 public InverseZInterpolator(float foc) { 1151 zInterpolator = new ZInterpolator(foc); 1152 } 1153 public float getInterpolation(float input) { 1154 return 1 - zInterpolator.getInterpolation(1 - input); 1155 } 1156 } 1157 1158 /* 1159 * ZInterpolator compounded with an ease-out. 1160 */ 1161 static class ZoomOutInterpolator implements TimeInterpolator { 1162 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1163 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1164 1165 public float getInterpolation(float input) { 1166 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1167 } 1168 } 1169 1170 /* 1171 * InvereZInterpolator compounded with an ease-out. 1172 */ 1173 static class ZoomInInterpolator implements TimeInterpolator { 1174 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1175 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1176 1177 public float getInterpolation(float input) { 1178 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1179 } 1180 } 1181 1182 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1183 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1184 1185 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1186 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1187 } 1188 1189 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1190 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1191 } 1192 1193 private void updateWhichPagesAcceptDropsHelper( 1194 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1195 final int screenCount = getChildCount(); 1196 for (int i = 0; i < screenCount; i++) { 1197 CellLayout cl = (CellLayout) getChildAt(i); 1198 cl.setIsDragOccuring(isDragHappening); 1199 switch (state) { 1200 case TOP: 1201 cl.setIsDefaultDropTarget(i == mCurrentPage); 1202 case BOTTOM_HIDDEN: 1203 case BOTTOM_VISIBLE: 1204 if (!isDragHappening) { 1205 // even if a drag isn't happening, we don't want to show a screen as 1206 // accepting drops if it doesn't have at least one free cell 1207 spanX = 1; 1208 spanY = 1; 1209 } 1210 // the page accepts drops if we can find at least one empty spot 1211 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1212 break; 1213 default: 1214 throw new RuntimeException( 1215 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1216 } 1217 } 1218 } 1219 1220 /* 1221 * 1222 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1223 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1224 * 1225 * These methods mark the appropriate pages as accepting drops (which alters their visual 1226 * appearance). 1227 * 1228 */ 1229 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1230 mIsDragInProcess = true; 1231 1232 final Canvas canvas = new Canvas(); 1233 1234 // We need to add extra padding to the bitmap to make room for the glow effect 1235 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1236 1237 // The outline is used to visualize where the item will land if dropped 1238 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1239 1240 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1241 } 1242 1243 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1244 // never dragged over 1245 public void onDragStopped() { 1246 mIsDragInProcess = false; 1247 updateWhichPagesAcceptDrops(mShrinkState); 1248 } 1249 1250 @Override 1251 protected boolean handlePagingClicks() { 1252 return true; 1253 } 1254 1255 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1256 public void unshrink(CellLayout clThatWasClicked) { 1257 unshrink(clThatWasClicked, false); 1258 } 1259 1260 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1261 int newCurrentPage = indexOfChild(clThatWasClicked); 1262 if (mIsSmall) { 1263 if (springLoaded) { 1264 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1265 } 1266 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1267 unshrink(true, springLoaded); 1268 } 1269 } 1270 1271 1272 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1273 mShrinkState = ShrinkState.SPRING_LOADED; 1274 unshrink(clThatWasClicked, true); 1275 mDragTargetLayout.onDragEnter(); 1276 } 1277 1278 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1279 shrink(shrinkState); 1280 if (mDragTargetLayout != null) { 1281 mDragTargetLayout.onDragExit(); 1282 } 1283 } 1284 1285 void unshrink(boolean animated) { 1286 unshrink(animated, false); 1287 } 1288 1289 void unshrink(boolean animated, boolean springLoaded) { 1290 if (mIsSmall) { 1291 float finalScaleFactor = 1.0f; 1292 float finalBackgroundAlpha = 0.0f; 1293 if (springLoaded) { 1294 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1295 finalBackgroundAlpha = 1.0f; 1296 } else { 1297 mIsSmall = false; 1298 } 1299 if (mAnimator != null) { 1300 mAnimator.cancel(); 1301 } 1302 1303 mAnimator = new AnimatorSet(); 1304 final int screenCount = getChildCount(); 1305 1306 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1307 for (int i = 0; i < screenCount; i++) { 1308 final CellLayout cl = (CellLayout)getChildAt(i); 1309 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1310 float finalAlphaMultiplierValue = 1311 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1312 0.0f : 1.0f; 1313 float rotation = 0.0f; 1314 1315 if (i < mCurrentPage) { 1316 rotation = WORKSPACE_ROTATION; 1317 } else if (i > mCurrentPage) { 1318 rotation = -WORKSPACE_ROTATION; 1319 } 1320 1321 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1322 1323 if (animated) { 1324 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1325 PropertyValuesHolder.ofFloat("translationX", translation), 1326 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1327 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1328 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1329 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1330 PropertyValuesHolder.ofFloat("backgroundAlphaMultiplier", 1331 finalAlphaMultiplierValue), 1332 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1333 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1334 animWithInterpolator.setDuration(duration); 1335 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1336 mAnimator.playTogether(animWithInterpolator); 1337 } else { 1338 cl.setTranslationX(translation); 1339 cl.setTranslationY(0.0f); 1340 cl.setScaleX(finalScaleFactor); 1341 cl.setScaleY(finalScaleFactor); 1342 cl.setBackgroundAlpha(0.0f); 1343 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1344 cl.setAlpha(finalAlphaValue); 1345 cl.setRotationY(rotation); 1346 mUnshrinkAnimationListener.onAnimationEnd(null); 1347 } 1348 } 1349 1350 if (animated) { 1351 // If we call this when we're not animated, onAnimationEnd is never called on 1352 // the listener; make sure we only use the listener when we're actually animating 1353 mAnimator.addListener(mUnshrinkAnimationListener); 1354 mAnimator.start(); 1355 } 1356 } 1357 1358 if (!springLoaded) { 1359 hideBackgroundGradient(); 1360 } 1361 } 1362 1363 /** 1364 * Draw the View v into the given Canvas. 1365 * 1366 * @param v the view to draw 1367 * @param destCanvas the canvas to draw on 1368 * @param padding the horizontal and vertical padding to use when drawing 1369 */ 1370 private void drawDragView(View v, Canvas destCanvas, int padding) { 1371 final Rect clipRect = mTempRect; 1372 v.getDrawingRect(clipRect); 1373 1374 // For a TextView, adjust the clip rect so that we don't include the text label 1375 if (v instanceof BubbleTextView) { 1376 final BubbleTextView tv = (BubbleTextView) v; 1377 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1378 tv.getLayout().getLineTop(0); 1379 } else if (v instanceof TextView) { 1380 final TextView tv = (TextView) v; 1381 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1382 tv.getLayout().getLineTop(0); 1383 } 1384 1385 // Draw the View into the bitmap. 1386 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1387 // they set scrollX and scrollY to large values to achieve centered text 1388 1389 destCanvas.save(); 1390 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1391 destCanvas.clipRect(clipRect, Op.REPLACE); 1392 v.draw(destCanvas); 1393 destCanvas.restore(); 1394 } 1395 1396 /** 1397 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1398 * Responsibility for the bitmap is transferred to the caller. 1399 */ 1400 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1401 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1402 final Bitmap b = Bitmap.createBitmap( 1403 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1404 1405 canvas.setBitmap(b); 1406 drawDragView(v, canvas, padding); 1407 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1408 return b; 1409 } 1410 1411 /** 1412 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1413 * Responsibility for the bitmap is transferred to the caller. 1414 */ 1415 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1416 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1417 final Bitmap b = Bitmap.createBitmap( 1418 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1419 1420 canvas.setBitmap(b); 1421 canvas.drawBitmap(orig, 0, 0, new Paint()); 1422 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1423 1424 return b; 1425 } 1426 1427 /** 1428 * Creates a drag outline to represent a drop (that we don't have the actual information for 1429 * yet). May be changed in the future to alter the drop outline slightly depending on the 1430 * clip description mime data. 1431 */ 1432 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1433 Resources r = getResources(); 1434 final int outlineColor = r.getColor(R.color.drag_outline_color); 1435 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1436 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1437 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1438 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1439 final Bitmap b = Bitmap.createBitmap( 1440 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1441 1442 canvas.setBitmap(b); 1443 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1444 rectRadius, rectRadius, mExternalDragOutlinePaint); 1445 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1446 return b; 1447 } 1448 1449 /** 1450 * Returns a new bitmap to show when the given View is being dragged around. 1451 * Responsibility for the bitmap is transferred to the caller. 1452 */ 1453 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1454 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1455 final Bitmap b = Bitmap.createBitmap( 1456 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1457 1458 canvas.setBitmap(b); 1459 canvas.drawBitmap(mDragOutline, 0, 0, null); 1460 drawDragView(v, canvas, padding); 1461 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1462 1463 return b; 1464 } 1465 1466 void startDrag(CellLayout.CellInfo cellInfo) { 1467 View child = cellInfo.cell; 1468 1469 // Make sure the drag was started by a long press as opposed to a long click. 1470 if (!child.isInTouchMode()) { 1471 return; 1472 } 1473 1474 mDragInfo = cellInfo; 1475 mDragInfo.screen = mCurrentPage; 1476 1477 CellLayout current = getCurrentDropLayout(); 1478 1479 current.onDragChild(child); 1480 1481 child.clearFocus(); 1482 child.setPressed(false); 1483 1484 final Canvas canvas = new Canvas(); 1485 1486 // We need to add extra padding to the bitmap to make room for the glow effect 1487 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1488 1489 // The outline is used to visualize where the item will land if dropped 1490 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1491 1492 // The drag bitmap follows the touch point around on the screen 1493 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1494 1495 final int bmpWidth = b.getWidth(); 1496 final int bmpHeight = b.getHeight(); 1497 child.getLocationOnScreen(mTempXY); 1498 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1499 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1500 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1501 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1502 b.recycle(); 1503 } 1504 1505 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1506 boolean insertAtFirst, int intersectX, int intersectY) { 1507 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1508 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1509 1510 final int[] cellXY = new int[2]; 1511 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1512 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1513 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1514 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1515 cellXY[0], cellXY[1]); 1516 } 1517 1518 private void setPositionForDropAnimation( 1519 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1520 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1521 1522 // Based on the position of the drag view, find the top left of the original view 1523 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1524 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1525 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1526 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1527 1528 // Set its old pos (in the new parent's coordinates); it will be animated 1529 // in animateViewIntoPosition after the next layout pass 1530 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1531 lp.oldY = viewY - (parent.getTop() - mScrollY); 1532 } 1533 1534 /* 1535 * We should be careful that this method cannot result in any synchronous requestLayout() 1536 * calls, as it is called from onLayout(). 1537 */ 1538 public void animateViewIntoPosition(final View view) { 1539 final CellLayout parent = (CellLayout) view.getParent(); 1540 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1541 1542 // Convert the animation params to be relative to the Workspace, not the CellLayout 1543 final int fromX = lp.oldX + parent.getLeft(); 1544 final int fromY = lp.oldY + parent.getTop(); 1545 1546 final int dx = lp.x - lp.oldX; 1547 final int dy = lp.y - lp.oldY; 1548 1549 // Calculate the duration of the animation based on the object's distance 1550 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1551 final Resources res = getResources(); 1552 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1553 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1554 if (dist < maxDist) { 1555 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1556 } 1557 1558 if (mDropAnim != null) { 1559 mDropAnim.end(); 1560 } 1561 mDropAnim = new ValueAnimator(); 1562 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1563 1564 // The view is invisible during the animation; we render it manually. 1565 mDropAnim.addListener(new AnimatorListenerAdapter() { 1566 public void onAnimationStart(Animator animation) { 1567 // Set this here so that we don't render it until the animation begins 1568 mDropView = view; 1569 } 1570 1571 public void onAnimationEnd(Animator animation) { 1572 if (mDropView != null) { 1573 mDropView.setVisibility(View.VISIBLE); 1574 mDropView = null; 1575 } 1576 } 1577 }); 1578 1579 mDropAnim.setDuration(duration); 1580 mDropAnim.setFloatValues(0.0f, 1.0f); 1581 mDropAnim.removeAllUpdateListeners(); 1582 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1583 public void onAnimationUpdate(ValueAnimator animation) { 1584 final float percent = (Float) animation.getAnimatedValue(); 1585 // Invalidate the old position 1586 invalidate(mDropViewPos[0], mDropViewPos[1], 1587 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1588 1589 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1590 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1591 invalidate(mDropViewPos[0], mDropViewPos[1], 1592 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1593 } 1594 }); 1595 1596 mDropAnim.start(); 1597 } 1598 1599 /** 1600 * {@inheritDoc} 1601 */ 1602 public boolean acceptDrop(DragSource source, int x, int y, 1603 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1604 1605 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1606 if (source != this) { 1607 // Don't accept the drop if we're not over a screen at time of drop 1608 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1609 return false; 1610 } 1611 1612 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1613 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1614 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1615 1616 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1617 1618 // Don't accept the drop if there's no room for the item 1619 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1620 mLauncher.showOutOfSpaceMessage(); 1621 return false; 1622 } 1623 } 1624 return true; 1625 } 1626 1627 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1628 DragView dragView, Object dragInfo) { 1629 1630 int originX = x - xOffset; 1631 int originY = y - yOffset; 1632 1633 if (mIsSmall || mIsInUnshrinkAnimation) { 1634 // get originX and originY in the local coordinate system of the screen 1635 mTempOriginXY[0] = originX; 1636 mTempOriginXY[1] = originY; 1637 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1638 originX = (int)mTempOriginXY[0]; 1639 originY = (int)mTempOriginXY[1]; 1640 } 1641 1642 // When you drag to a particular screen, make that the new current/default screen, so any 1643 // subsequent taps add items to that screen 1644 int dragTargetIndex = indexOfChild(mDragTargetLayout); 1645 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 1646 moveToNewPageWithoutMovingCellLayouts(dragTargetIndex); 1647 } 1648 1649 if (source != this) { 1650 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1651 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1652 } else { 1653 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1654 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1655 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1656 } 1657 } else if (mDragInfo != null) { 1658 final View cell = mDragInfo.cell; 1659 CellLayout dropTargetLayout = mDragTargetLayout; 1660 1661 // Handle the case where the user drops when in the scroll area. 1662 // This is treated as a drop on the adjacent page. 1663 if (dropTargetLayout == null && mInScrollArea) { 1664 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1665 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1666 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1667 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1668 } 1669 } 1670 1671 if (dropTargetLayout != null) { 1672 // Move internally 1673 mTargetCell = findNearestVacantArea(originX, originY, 1674 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1675 mTargetCell); 1676 1677 final int screen = (mTargetCell == null) ? 1678 mDragInfo.screen : indexOfChild(dropTargetLayout); 1679 1680 if (screen != mCurrentPage) { 1681 snapToPage(screen); 1682 } 1683 1684 if (mTargetCell != null) { 1685 if (screen != mDragInfo.screen) { 1686 // Reparent the view 1687 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1688 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1689 mDragInfo.spanX, mDragInfo.spanY); 1690 } 1691 1692 // update the item's position after drop 1693 final ItemInfo info = (ItemInfo) cell.getTag(); 1694 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1695 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1696 lp.cellX = mTargetCell[0]; 1697 lp.cellY = mTargetCell[1]; 1698 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1699 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1700 1701 LauncherModel.moveItemInDatabase(mLauncher, info, 1702 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1703 lp.cellX, lp.cellY); 1704 } 1705 } 1706 1707 final CellLayout parent = (CellLayout) cell.getParent(); 1708 1709 // Prepare it to be animated into its new position 1710 // This must be called after the view has been re-parented 1711 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1712 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1713 parent.onDropChild(cell, animateDrop); 1714 } 1715 } 1716 1717 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1718 int yOffset, DragView dragView, Object dragInfo) { 1719 mDragTargetLayout = null; // Reset the drag state 1720 1721 if (!mIsSmall) { 1722 mDragTargetLayout = getCurrentDropLayout(); 1723 mDragTargetLayout.onDragEnter(); 1724 showOutlines(); 1725 } 1726 } 1727 1728 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1729 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1730 1731 if (mIsSmall || mIsInUnshrinkAnimation) { 1732 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1733 return null; 1734 } 1735 // We may need to delegate the drag to a child view. If a 1x1 item 1736 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1737 // then drag events should be handled by that child. 1738 1739 ItemInfo item = (ItemInfo)dragInfo; 1740 CellLayout currentLayout = getCurrentDropLayout(); 1741 1742 int dragPointX, dragPointY; 1743 if (item.spanX == 1 && item.spanY == 1) { 1744 // For a 1x1, calculate the drop cell exactly as in onDragOver 1745 dragPointX = x - xOffset; 1746 dragPointY = y - yOffset; 1747 } else { 1748 // Otherwise, use the exact drag coordinates 1749 dragPointX = x; 1750 dragPointY = y; 1751 } 1752 dragPointX += mScrollX - currentLayout.getLeft(); 1753 dragPointY += mScrollY - currentLayout.getTop(); 1754 1755 // If we are dragging over a cell that contains a DropTarget that will 1756 // accept the drop, delegate to that DropTarget. 1757 final int[] cellXY = mTempCell; 1758 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1759 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1760 if (child instanceof DropTarget) { 1761 DropTarget target = (DropTarget)child; 1762 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1763 return target; 1764 } 1765 } 1766 return null; 1767 } 1768 1769 /** 1770 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1771 * in the returned structure related to the widgets that match the drop (or a null list if it is 1772 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1773 */ 1774 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1775 final LauncherModel model = mLauncher.getModel(); 1776 final ClipDescription desc = event.getClipDescription(); 1777 final int mimeTypeCount = desc.getMimeTypeCount(); 1778 for (int i = 0; i < mimeTypeCount; ++i) { 1779 final String mimeType = desc.getMimeType(i); 1780 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1781 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1782 } else { 1783 final List<WidgetMimeTypeHandlerData> widgets = 1784 model.resolveWidgetsForMimeType(mContext, mimeType); 1785 if (widgets.size() > 0) { 1786 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1787 } 1788 } 1789 } 1790 return null; 1791 } 1792 1793 /** 1794 * Global drag and drop handler 1795 */ 1796 @Override 1797 public boolean onDragEvent(DragEvent event) { 1798 final ClipDescription desc = event.getClipDescription(); 1799 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1800 final int[] pos = new int[2]; 1801 layout.getLocationOnScreen(pos); 1802 // We need to offset the drag coordinates to layout coordinate space 1803 final int x = (int) event.getX() - pos[0]; 1804 final int y = (int) event.getY() - pos[1]; 1805 1806 switch (event.getAction()) { 1807 case DragEvent.ACTION_DRAG_STARTED: { 1808 // Validate this drag 1809 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1810 if (test != null) { 1811 boolean isShortcut = (test.second == null); 1812 if (isShortcut) { 1813 // Check if we have enough space on this screen to add a new shortcut 1814 if (!layout.findCellForSpan(pos, 1, 1)) { 1815 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1816 Toast.LENGTH_SHORT).show(); 1817 return false; 1818 } 1819 } 1820 } else { 1821 // Show error message if we couldn't accept any of the items 1822 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1823 Toast.LENGTH_SHORT).show(); 1824 return false; 1825 } 1826 1827 // Create the drag outline 1828 // We need to add extra padding to the bitmap to make room for the glow effect 1829 final Canvas canvas = new Canvas(); 1830 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1831 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1832 1833 // Show the current page outlines to indicate that we can accept this drop 1834 showOutlines(); 1835 layout.setIsDragOccuring(true); 1836 layout.onDragEnter(); 1837 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1838 1839 return true; 1840 } 1841 case DragEvent.ACTION_DRAG_LOCATION: 1842 // Visualize the drop location 1843 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1844 return true; 1845 case DragEvent.ACTION_DROP: { 1846 // Try and add any shortcuts 1847 final LauncherModel model = mLauncher.getModel(); 1848 final ClipData data = event.getClipData(); 1849 1850 // We assume that the mime types are ordered in descending importance of 1851 // representation. So we enumerate the list of mime types and alert the 1852 // user if any widgets can handle the drop. Only the most preferred 1853 // representation will be handled. 1854 pos[0] = x; 1855 pos[1] = y; 1856 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1857 if (test != null) { 1858 final int index = test.first; 1859 final List<WidgetMimeTypeHandlerData> widgets = test.second; 1860 final boolean isShortcut = (widgets == null); 1861 final String mimeType = desc.getMimeType(index); 1862 if (isShortcut) { 1863 final Intent intent = data.getItem(index).getIntent(); 1864 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1865 onDropExternal(x, y, info, layout, false); 1866 } else { 1867 if (widgets.size() == 1) { 1868 // If there is only one item, then go ahead and add and configure 1869 // that widget 1870 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 1871 final PendingAddWidgetInfo createInfo = 1872 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 1873 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 1874 } else { 1875 // Show the widget picker dialog if there is more than one widget 1876 // that can handle this data type 1877 final InstallWidgetReceiver.WidgetListAdapter adapter = 1878 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 1879 data, widgets, layout, mCurrentPage, pos); 1880 final AlertDialog.Builder builder = 1881 new AlertDialog.Builder(mContext); 1882 builder.setAdapter(adapter, adapter); 1883 builder.setCancelable(true); 1884 builder.setTitle(mContext.getString( 1885 R.string.external_drop_widget_pick_title)); 1886 builder.setIcon(R.drawable.ic_no_applications); 1887 builder.show(); 1888 } 1889 } 1890 } 1891 return true; 1892 } 1893 case DragEvent.ACTION_DRAG_ENDED: 1894 // Hide the page outlines after the drop 1895 layout.setIsDragOccuring(false); 1896 layout.onDragExit(); 1897 hideOutlines(); 1898 return true; 1899 } 1900 return super.onDragEvent(event); 1901 } 1902 1903 /* 1904 * 1905 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1906 * coordinate space. The argument xy is modified with the return result. 1907 * 1908 */ 1909 void mapPointFromSelfToChild(View v, float[] xy) { 1910 mapPointFromSelfToChild(v, xy, null); 1911 } 1912 1913 /* 1914 * 1915 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1916 * coordinate space. The argument xy is modified with the return result. 1917 * 1918 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1919 * computing it itself; we use this to avoid redundant matrix inversions in 1920 * findMatchingPageForDragOver 1921 * 1922 */ 1923 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1924 if (cachedInverseMatrix == null) { 1925 v.getMatrix().invert(mTempInverseMatrix); 1926 cachedInverseMatrix = mTempInverseMatrix; 1927 } 1928 xy[0] = xy[0] + mScrollX - v.getLeft(); 1929 xy[1] = xy[1] + mScrollY - v.getTop(); 1930 cachedInverseMatrix.mapPoints(xy); 1931 } 1932 1933 /* 1934 * 1935 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1936 * the parent View's coordinate space. The argument xy is modified with the return result. 1937 * 1938 */ 1939 void mapPointFromChildToSelf(View v, float[] xy) { 1940 v.getMatrix().mapPoints(xy); 1941 xy[0] -= (mScrollX - v.getLeft()); 1942 xy[1] -= (mScrollY - v.getTop()); 1943 } 1944 1945 static private float squaredDistance(float[] point1, float[] point2) { 1946 float distanceX = point1[0] - point2[0]; 1947 float distanceY = point2[1] - point2[1]; 1948 return distanceX * distanceX + distanceY * distanceY; 1949 } 1950 1951 /* 1952 * 1953 * Returns true if the passed CellLayout cl overlaps with dragView 1954 * 1955 */ 1956 boolean overlaps(CellLayout cl, DragView dragView, 1957 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1958 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1959 final float[] draggedItemTopLeft = mTempDragCoordinates; 1960 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1961 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1962 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1963 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1964 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1965 1966 // Transform the dragged item's top left coordinates 1967 // to the CellLayout's local coordinates 1968 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1969 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1970 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1971 1972 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1973 // Transform the dragged item's bottom right coordinates 1974 // to the CellLayout's local coordinates 1975 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1976 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1977 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1978 1979 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1980 float overlap = (overlapRegionRight - overlapRegionLeft) * 1981 (overlapRegionBottom - overlapRegionTop); 1982 if (overlap > 0) { 1983 return true; 1984 } 1985 } 1986 } 1987 return false; 1988 } 1989 1990 /* 1991 * 1992 * This method returns the CellLayout that is currently being dragged to. In order to drag 1993 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 1994 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 1995 * 1996 * Return null if no CellLayout is currently being dragged over 1997 * 1998 */ 1999 private CellLayout findMatchingPageForDragOver( 2000 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2001 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2002 // with the item being dragged and then choose the one that's closest to the touch point 2003 final int screenCount = getChildCount(); 2004 CellLayout bestMatchingScreen = null; 2005 float smallestDistSoFar = Float.MAX_VALUE; 2006 2007 for (int i = 0; i < screenCount; i++) { 2008 CellLayout cl = (CellLayout)getChildAt(i); 2009 2010 final float[] touchXy = mTempTouchCoordinates; 2011 touchXy[0] = originX + offsetX; 2012 touchXy[1] = originY + offsetY; 2013 2014 // Transform the touch coordinates to the CellLayout's local coordinates 2015 // If the touch point is within the bounds of the cell layout, we can return immediately 2016 cl.getMatrix().invert(mTempInverseMatrix); 2017 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2018 2019 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2020 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2021 return cl; 2022 } 2023 2024 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2025 // Get the center of the cell layout in screen coordinates 2026 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2027 cellLayoutCenter[0] = cl.getWidth()/2; 2028 cellLayoutCenter[1] = cl.getHeight()/2; 2029 mapPointFromChildToSelf(cl, cellLayoutCenter); 2030 2031 touchXy[0] = originX + offsetX; 2032 touchXy[1] = originY + offsetY; 2033 2034 // Calculate the distance between the center of the CellLayout 2035 // and the touch point 2036 float dist = squaredDistance(touchXy, cellLayoutCenter); 2037 2038 if (dist < smallestDistSoFar) { 2039 smallestDistSoFar = dist; 2040 bestMatchingScreen = cl; 2041 } 2042 } 2043 } 2044 return bestMatchingScreen; 2045 } 2046 2047 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2048 DragView dragView, Object dragInfo) { 2049 // When touch is inside the scroll area, skip dragOver actions for the current screen 2050 if (!mInScrollArea) { 2051 CellLayout layout; 2052 int originX = x - xOffset; 2053 int originY = y - yOffset; 2054 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2055 if (shrunken) { 2056 layout = findMatchingPageForDragOver( 2057 dragView, originX, originY, xOffset, yOffset); 2058 2059 if (layout != mDragTargetLayout) { 2060 if (mDragTargetLayout != null) { 2061 mDragTargetLayout.setIsDragOverlapping(false); 2062 mSpringLoadedDragController.onDragExit(); 2063 } 2064 mDragTargetLayout = layout; 2065 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2066 mDragTargetLayout.setIsDragOverlapping(true); 2067 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2068 } 2069 } 2070 } else { 2071 layout = getCurrentDropLayout(); 2072 if (layout != mDragTargetLayout) { 2073 if (mDragTargetLayout != null) { 2074 mDragTargetLayout.onDragExit(); 2075 } 2076 layout.onDragEnter(); 2077 mDragTargetLayout = layout; 2078 } 2079 } 2080 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2081 layout = getCurrentDropLayout(); 2082 2083 final ItemInfo item = (ItemInfo)dragInfo; 2084 if (dragInfo instanceof LauncherAppWidgetInfo) { 2085 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2086 2087 if (widgetInfo.spanX == -1) { 2088 // Calculate the grid spans needed to fit this widget 2089 int[] spans = layout.rectToCell( 2090 widgetInfo.minWidth, widgetInfo.minHeight, null); 2091 item.spanX = spans[0]; 2092 item.spanY = spans[1]; 2093 } 2094 } 2095 2096 if (source instanceof AllAppsPagedView) { 2097 // This is a hack to fix the point used to determine which cell an icon from 2098 // the all apps screen is over 2099 if (item != null && item.spanX == 1 && layout != null) { 2100 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2101 2102 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2103 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2104 dragView.setDragRegion(dragView.getDragRegionLeft(), 2105 dragView.getDragRegionTop(), 2106 layout.getCellWidth(), 2107 dragView.getDragRegionHeight()); 2108 } 2109 } 2110 } 2111 2112 if (mDragTargetLayout != null) { 2113 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2114 float[] localOrigin = { originX, originY }; 2115 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2116 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2117 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2118 } 2119 } 2120 } 2121 } 2122 2123 public void onDragExit(DragSource source, int x, int y, int xOffset, 2124 int yOffset, DragView dragView, Object dragInfo) { 2125 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2126 if (mDragTargetLayout != null) { 2127 mDragTargetLayout.onDragExit(); 2128 } 2129 if (!mIsPageMoving) { 2130 hideOutlines(); 2131 } 2132 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2133 mLauncher.exitSpringLoadedDragMode(); 2134 } 2135 clearAllHovers(); 2136 } 2137 2138 @Override 2139 public void getHitRect(Rect outRect) { 2140 // We want the workspace to have the whole area of the display (it will find the correct 2141 // cell layout to drop to in the existing drag/drop logic. 2142 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2143 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2144 } 2145 2146 /** 2147 * Add the item specified by dragInfo to the given layout. 2148 * @return true if successful 2149 */ 2150 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2151 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2152 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2153 return true; 2154 } 2155 mLauncher.showOutOfSpaceMessage(); 2156 return false; 2157 } 2158 2159 /** 2160 * Drop an item that didn't originate on one of the workspace screens. 2161 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2162 * come from another app altogether. 2163 * 2164 * NOTE: This can also be called when we are outside of a drag event, when we want 2165 * to add an item to one of the workspace screens. 2166 */ 2167 private void onDropExternal(int x, int y, Object dragInfo, 2168 CellLayout cellLayout, boolean insertAtFirst) { 2169 int screen = indexOfChild(cellLayout); 2170 if (dragInfo instanceof PendingAddItemInfo) { 2171 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2172 // When dragging and dropping from customization tray, we deal with creating 2173 // widgets/shortcuts/folders in a slightly different way 2174 // Only set touchXY if you are supporting spring loaded adding of items 2175 int[] touchXY = new int[2]; 2176 touchXY[0] = x; 2177 touchXY[1] = y; 2178 switch (info.itemType) { 2179 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2180 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2181 break; 2182 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2183 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2184 break; 2185 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2186 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2187 break; 2188 default: 2189 throw new IllegalStateException("Unknown item type: " + info.itemType); 2190 } 2191 cellLayout.onDragExit(); 2192 } else { 2193 // This is for other drag/drop cases, like dragging from All Apps 2194 ItemInfo info = (ItemInfo) dragInfo; 2195 View view = null; 2196 2197 switch (info.itemType) { 2198 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2199 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2200 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2201 // Came from all apps -- make a copy 2202 info = new ShortcutInfo((ApplicationInfo) info); 2203 } 2204 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2205 (ShortcutInfo) info); 2206 break; 2207 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2208 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2209 cellLayout, (UserFolderInfo) info, mIconCache); 2210 break; 2211 default: 2212 throw new IllegalStateException("Unknown item type: " + info.itemType); 2213 } 2214 2215 mTargetCell = new int[2]; 2216 if (x != -1 && y != -1) { 2217 // when dragging and dropping, just find the closest free spot 2218 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2219 } else { 2220 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2221 } 2222 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2223 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2224 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2225 cellLayout.onDropChild(view, animateDrop); 2226 cellLayout.animateDrop(); 2227 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2228 2229 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2230 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2231 lp.cellX, lp.cellY); 2232 } 2233 } 2234 2235 /** 2236 * Return the current {@link CellLayout}, correctly picking the destination 2237 * screen while a scroll is in progress. 2238 */ 2239 private CellLayout getCurrentDropLayout() { 2240 // if we're currently small, use findMatchingPageForDragOver instead 2241 if (mIsSmall) return null; 2242 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2243 return (CellLayout) getChildAt(index); 2244 } 2245 2246 /** 2247 * Return the current CellInfo describing our current drag; this method exists 2248 * so that Launcher can sync this object with the correct info when the activity is created/ 2249 * destroyed 2250 * 2251 */ 2252 public CellLayout.CellInfo getDragInfo() { 2253 return mDragInfo; 2254 } 2255 2256 /** 2257 * Calculate the nearest cell where the given object would be dropped. 2258 */ 2259 private int[] findNearestVacantArea(int pixelX, int pixelY, 2260 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2261 2262 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2263 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2264 2265 // Find the best target drop location 2266 return layout.findNearestVacantArea( 2267 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2268 } 2269 2270 void setLauncher(Launcher launcher) { 2271 mLauncher = launcher; 2272 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2273 2274 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2275 if (mCustomizationDrawer != null) { 2276 mCustomizationDrawerContent = 2277 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2278 } 2279 } 2280 2281 public void setDragController(DragController dragController) { 2282 mDragController = dragController; 2283 } 2284 2285 public void onDropCompleted(View target, boolean success) { 2286 if (success) { 2287 if (target != this && mDragInfo != null) { 2288 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2289 cellLayout.removeView(mDragInfo.cell); 2290 if (mDragInfo.cell instanceof DropTarget) { 2291 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2292 } 2293 // final Object tag = mDragInfo.cell.getTag(); 2294 } 2295 } else if (mDragInfo != null) { 2296 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2297 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, animateDrop); 2298 } 2299 2300 mDragOutline = null; 2301 mDragInfo = null; 2302 } 2303 2304 @Override 2305 public void onDragViewVisible() { 2306 ((View) mDragInfo.cell).setVisibility(View.GONE); 2307 } 2308 2309 public boolean isDropEnabled() { 2310 return true; 2311 } 2312 2313 @Override 2314 protected void onRestoreInstanceState(Parcelable state) { 2315 super.onRestoreInstanceState(state); 2316 Launcher.setScreen(mCurrentPage); 2317 } 2318 2319 @Override 2320 public void scrollLeft() { 2321 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2322 super.scrollLeft(); 2323 } 2324 } 2325 2326 @Override 2327 public void scrollRight() { 2328 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2329 super.scrollRight(); 2330 } 2331 } 2332 2333 @Override 2334 public void onEnterScrollArea(int direction) { 2335 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2336 mInScrollArea = true; 2337 mPendingScrollDirection = direction; 2338 2339 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2340 final CellLayout layout = (CellLayout) getChildAt(page); 2341 2342 if (layout != null) { 2343 layout.setIsDragOverlapping(true); 2344 2345 if (mDragTargetLayout != null) { 2346 mDragTargetLayout.onDragExit(); 2347 mDragTargetLayout = null; 2348 } 2349 } 2350 } 2351 } 2352 2353 private void clearAllHovers() { 2354 final int childCount = getChildCount(); 2355 for (int i = 0; i < childCount; i++) { 2356 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2357 } 2358 mSpringLoadedDragController.onDragExit(); 2359 } 2360 2361 @Override 2362 public void onExitScrollArea() { 2363 if (mInScrollArea) { 2364 mInScrollArea = false; 2365 mPendingScrollDirection = DragController.SCROLL_NONE; 2366 clearAllHovers(); 2367 } 2368 } 2369 2370 public Folder getFolderForTag(Object tag) { 2371 final int screenCount = getChildCount(); 2372 for (int screen = 0; screen < screenCount; screen++) { 2373 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2374 int count = currentScreen.getChildCount(); 2375 for (int i = 0; i < count; i++) { 2376 View child = currentScreen.getChildAt(i); 2377 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2378 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2379 Folder f = (Folder) child; 2380 if (f.getInfo() == tag && f.getInfo().opened) { 2381 return f; 2382 } 2383 } 2384 } 2385 } 2386 return null; 2387 } 2388 2389 public View getViewForTag(Object tag) { 2390 int screenCount = getChildCount(); 2391 for (int screen = 0; screen < screenCount; screen++) { 2392 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2393 int count = currentScreen.getChildCount(); 2394 for (int i = 0; i < count; i++) { 2395 View child = currentScreen.getChildAt(i); 2396 if (child.getTag() == tag) { 2397 return child; 2398 } 2399 } 2400 } 2401 return null; 2402 } 2403 2404 2405 void removeItems(final ArrayList<ApplicationInfo> apps) { 2406 final int screenCount = getChildCount(); 2407 final PackageManager manager = getContext().getPackageManager(); 2408 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2409 2410 final HashSet<String> packageNames = new HashSet<String>(); 2411 final int appCount = apps.size(); 2412 for (int i = 0; i < appCount; i++) { 2413 packageNames.add(apps.get(i).componentName.getPackageName()); 2414 } 2415 2416 for (int i = 0; i < screenCount; i++) { 2417 final CellLayout layout = (CellLayout) getChildAt(i); 2418 2419 // Avoid ANRs by treating each screen separately 2420 post(new Runnable() { 2421 public void run() { 2422 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2423 childrenToRemove.clear(); 2424 2425 int childCount = layout.getChildCount(); 2426 for (int j = 0; j < childCount; j++) { 2427 final View view = layout.getChildAt(j); 2428 Object tag = view.getTag(); 2429 2430 if (tag instanceof ShortcutInfo) { 2431 final ShortcutInfo info = (ShortcutInfo) tag; 2432 final Intent intent = info.intent; 2433 final ComponentName name = intent.getComponent(); 2434 2435 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2436 for (String packageName: packageNames) { 2437 if (packageName.equals(name.getPackageName())) { 2438 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2439 childrenToRemove.add(view); 2440 } 2441 } 2442 } 2443 } else if (tag instanceof UserFolderInfo) { 2444 final UserFolderInfo info = (UserFolderInfo) tag; 2445 final ArrayList<ShortcutInfo> contents = info.contents; 2446 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2447 final int contentsCount = contents.size(); 2448 boolean removedFromFolder = false; 2449 2450 for (int k = 0; k < contentsCount; k++) { 2451 final ShortcutInfo appInfo = contents.get(k); 2452 final Intent intent = appInfo.intent; 2453 final ComponentName name = intent.getComponent(); 2454 2455 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2456 for (String packageName: packageNames) { 2457 if (packageName.equals(name.getPackageName())) { 2458 toRemove.add(appInfo); 2459 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2460 removedFromFolder = true; 2461 } 2462 } 2463 } 2464 } 2465 2466 contents.removeAll(toRemove); 2467 if (removedFromFolder) { 2468 final Folder folder = getOpenFolder(); 2469 if (folder != null) 2470 folder.notifyDataSetChanged(); 2471 } 2472 } else if (tag instanceof LiveFolderInfo) { 2473 final LiveFolderInfo info = (LiveFolderInfo) tag; 2474 final Uri uri = info.uri; 2475 final ProviderInfo providerInfo = manager.resolveContentProvider( 2476 uri.getAuthority(), 0); 2477 2478 if (providerInfo != null) { 2479 for (String packageName: packageNames) { 2480 if (packageName.equals(providerInfo.packageName)) { 2481 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2482 childrenToRemove.add(view); 2483 } 2484 } 2485 } 2486 } else if (tag instanceof LauncherAppWidgetInfo) { 2487 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2488 final AppWidgetProviderInfo provider = 2489 widgets.getAppWidgetInfo(info.appWidgetId); 2490 if (provider != null) { 2491 for (String packageName: packageNames) { 2492 if (packageName.equals(provider.provider.getPackageName())) { 2493 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2494 childrenToRemove.add(view); 2495 } 2496 } 2497 } 2498 } 2499 } 2500 2501 childCount = childrenToRemove.size(); 2502 for (int j = 0; j < childCount; j++) { 2503 View child = childrenToRemove.get(j); 2504 layout.removeViewInLayout(child); 2505 if (child instanceof DropTarget) { 2506 mDragController.removeDropTarget((DropTarget)child); 2507 } 2508 } 2509 2510 if (childCount > 0) { 2511 layout.requestLayout(); 2512 layout.invalidate(); 2513 } 2514 } 2515 }); 2516 } 2517 } 2518 2519 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2520 final int screenCount = getChildCount(); 2521 for (int i = 0; i < screenCount; i++) { 2522 final CellLayout layout = (CellLayout) getChildAt(i); 2523 int childCount = layout.getChildCount(); 2524 for (int j = 0; j < childCount; j++) { 2525 final View view = layout.getChildAt(j); 2526 Object tag = view.getTag(); 2527 if (tag instanceof ShortcutInfo) { 2528 ShortcutInfo info = (ShortcutInfo)tag; 2529 // We need to check for ACTION_MAIN otherwise getComponent() might 2530 // return null for some shortcuts (for instance, for shortcuts to 2531 // web pages.) 2532 final Intent intent = info.intent; 2533 final ComponentName name = intent.getComponent(); 2534 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2535 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2536 final int appCount = apps.size(); 2537 for (int k = 0; k < appCount; k++) { 2538 ApplicationInfo app = apps.get(k); 2539 if (app.componentName.equals(name)) { 2540 info.setIcon(mIconCache.getIcon(info.intent)); 2541 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2542 new FastBitmapDrawable(info.getIcon(mIconCache)), 2543 null, null); 2544 } 2545 } 2546 } 2547 } 2548 } 2549 } 2550 } 2551 2552 void moveToDefaultScreen(boolean animate) { 2553 if (mIsSmall || mIsInUnshrinkAnimation) { 2554 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2555 } else if (animate) { 2556 snapToPage(mDefaultPage); 2557 } else { 2558 setCurrentPage(mDefaultPage); 2559 } 2560 getChildAt(mDefaultPage).requestFocus(); 2561 } 2562 2563 void setIndicators(Drawable previous, Drawable next) { 2564 mPreviousIndicator = previous; 2565 mNextIndicator = next; 2566 previous.setLevel(mCurrentPage); 2567 next.setLevel(mCurrentPage); 2568 } 2569 2570 @Override 2571 public void syncPages() { 2572 } 2573 2574 @Override 2575 public void syncPageItems(int page) { 2576 } 2577 2578} 2579