Workspace.java revision 8ae3a62e2e48dfb8f860c8b6e2c7e72b9595d7aa
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; 20 21import android.animation.Animator; 22import android.animation.AnimatorListenerAdapter; 23import android.animation.AnimatorSet; 24import android.animation.ObjectAnimator; 25import android.animation.PropertyValuesHolder; 26import android.animation.TimeInterpolator; 27import android.animation.ValueAnimator; 28import android.animation.Animator.AnimatorListener; 29import android.animation.ValueAnimator.AnimatorUpdateListener; 30import android.app.WallpaperManager; 31import android.appwidget.AppWidgetManager; 32import android.appwidget.AppWidgetProviderInfo; 33import android.content.ClipData; 34import android.content.ClipDescription; 35import android.content.ComponentName; 36import android.content.Context; 37import android.content.Intent; 38import android.content.pm.PackageManager; 39import android.content.pm.ProviderInfo; 40import android.content.res.Resources; 41import android.content.res.TypedArray; 42import android.graphics.Bitmap; 43import android.graphics.Canvas; 44import android.graphics.Matrix; 45import android.graphics.Paint; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region.Op; 49import android.graphics.drawable.Drawable; 50import android.net.Uri; 51import android.os.IBinder; 52import android.os.Parcelable; 53import android.util.AttributeSet; 54import android.util.Log; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.animation.DecelerateInterpolator; 59import android.widget.TextView; 60import android.widget.Toast; 61 62import java.util.ArrayList; 63import java.util.HashSet; 64 65/** 66 * The workspace is a wide area with a wallpaper and a finite number of pages. 67 * Each page contains a number of icons, folders or widgets the user can 68 * interact with. A workspace is meant to be used with a fixed width only. 69 */ 70public class Workspace extends SmoothPagedView 71 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 72 @SuppressWarnings({"UnusedDeclaration"}) 73 private static final String TAG = "Launcher.Workspace"; 74 75 // This is how much the workspace shrinks when we enter all apps or 76 // customization mode 77 private static final float SHRINK_FACTOR = 0.16f; 78 79 // Y rotation to apply to the workspace screens 80 private static final float WORKSPACE_ROTATION = 12.5f; 81 82 // These are extra scale factors to apply to the mini home screens 83 // so as to achieve the desired transform 84 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 85 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 86 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 87 88 private static final int BACKGROUND_FADE_OUT_DELAY = 300; 89 private static final int BACKGROUND_FADE_OUT_DURATION = 300; 90 private static final int BACKGROUND_FADE_IN_DURATION = 100; 91 92 // These animators are used to fade the background 93 private ObjectAnimator mBackgroundFadeInAnimation; 94 private ObjectAnimator mBackgroundFadeOutAnimation; 95 private float mBackgroundAlpha = 0; 96 97 private final WallpaperManager mWallpaperManager; 98 99 private int mDefaultPage; 100 101 private boolean mPageMoving = false; 102 103 /** 104 * CellInfo for the cell that is currently being dragged 105 */ 106 private CellLayout.CellInfo mDragInfo; 107 108 /** 109 * Target drop area calculated during last acceptDrop call. 110 */ 111 private int[] mTargetCell = null; 112 113 /** 114 * The CellLayout that is currently being dragged over 115 */ 116 private CellLayout mDragTargetLayout = null; 117 118 private Launcher mLauncher; 119 private IconCache mIconCache; 120 private DragController mDragController; 121 122 // These are temporary variables to prevent having to allocate a new object just to 123 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 124 private int[] mTempCell = new int[2]; 125 private int[] mTempEstimate = new int[2]; 126 private float[] mTempOriginXY = new float[2]; 127 private float[] mTempDragCoordinates = new float[2]; 128 private float[] mTempTouchCoordinates = new float[2]; 129 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 130 private float[] mTempDragBottomRightCoordinates = new float[2]; 131 private Matrix mTempInverseMatrix = new Matrix(); 132 133 private static final int DEFAULT_CELL_COUNT_X = 4; 134 private static final int DEFAULT_CELL_COUNT_Y = 4; 135 136 private Drawable mPreviousIndicator; 137 private Drawable mNextIndicator; 138 139 // State variable that indicates whether the pages are small (ie when you're 140 // in all apps or customize mode) 141 private boolean mIsSmall = false; 142 private boolean mIsInUnshrinkAnimation = false; 143 private AnimatorListener mUnshrinkAnimationListener; 144 private enum ShrinkPosition { 145 SHRINK_TO_TOP, SHRINK_TO_MIDDLE, SHRINK_TO_BOTTOM_HIDDEN, SHRINK_TO_BOTTOM_VISIBLE }; 146 private ShrinkPosition mShrunkenState; 147 private boolean mWaitingToShrink = false; 148 private ShrinkPosition mWaitingToShrinkPosition; 149 private AnimatorSet mAnimator; 150 151 private boolean mInScrollArea = false; 152 private boolean mInDragMode = false; 153 154 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 155 private Bitmap mDragOutline = null; 156 private final Rect mTempRect = new Rect(); 157 private final int[] mTempXY = new int[2]; 158 159 private ValueAnimator mDropAnim = null; 160 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 161 private View mDropView = null; 162 private int[] mDropViewPos = new int[] { -1, -1 }; 163 164 // Paint used to draw external drop outline 165 private final Paint mExternalDragOutlinePaint = new Paint(); 166 167 /** Used to trigger an animation as soon as the workspace stops scrolling. */ 168 private Animator mAnimOnPageEndMoving = null; 169 170 /** 171 * Used to inflate the Workspace from XML. 172 * 173 * @param context The application's context. 174 * @param attrs The attributes set containing the Workspace's customization values. 175 */ 176 public Workspace(Context context, AttributeSet attrs) { 177 this(context, attrs, 0); 178 } 179 180 /** 181 * Used to inflate the Workspace from XML. 182 * 183 * @param context The application's context. 184 * @param attrs The attributes set containing the Workspace's customization values. 185 * @param defStyle Unused. 186 */ 187 public Workspace(Context context, AttributeSet attrs, int defStyle) { 188 super(context, attrs, defStyle); 189 mContentIsRefreshable = false; 190 191 if (!LauncherApplication.isScreenXLarge()) { 192 mFadeInAdjacentScreens = false; 193 } 194 195 mWallpaperManager = WallpaperManager.getInstance(context); 196 197 TypedArray a = context.obtainStyledAttributes(attrs, 198 R.styleable.Workspace, defStyle, 0); 199 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 200 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 201 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 202 a.recycle(); 203 204 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 205 setHapticFeedbackEnabled(false); 206 207 initWorkspace(); 208 } 209 210 /** 211 * Initializes various states for this workspace. 212 */ 213 protected void initWorkspace() { 214 Context context = getContext(); 215 mCurrentPage = mDefaultPage; 216 Launcher.setScreen(mCurrentPage); 217 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 218 mIconCache = app.getIconCache(); 219 mExternalDragOutlinePaint.setAntiAlias(true); 220 setWillNotDraw(false); 221 222 mUnshrinkAnimationListener = new LauncherAnimatorListenerAdapter() { 223 @Override 224 public void onAnimationStart(Animator animation) { 225 mIsInUnshrinkAnimation = true; 226 } 227 @Override 228 public void onAnimationEndOrCancel(Animator animation) { 229 mIsInUnshrinkAnimation = false; 230 } 231 }; 232 mSnapVelocity = 600; 233 } 234 235 @Override 236 protected int getScrollMode() { 237 if (LauncherApplication.isScreenXLarge()) { 238 return SmoothPagedView.QUINTIC_MODE; 239 } else { 240 return SmoothPagedView.OVERSHOOT_MODE; 241 } 242 } 243 244 @Override 245 public void addView(View child, int index, LayoutParams params) { 246 if (!(child instanceof CellLayout)) { 247 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 248 } 249 ((CellLayout) child).setOnInterceptTouchListener(this); 250 super.addView(child, index, params); 251 } 252 253 @Override 254 public void addView(View child) { 255 if (!(child instanceof CellLayout)) { 256 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 257 } 258 ((CellLayout) child).setOnInterceptTouchListener(this); 259 super.addView(child); 260 } 261 262 @Override 263 public void addView(View child, int index) { 264 if (!(child instanceof CellLayout)) { 265 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 266 } 267 ((CellLayout) child).setOnInterceptTouchListener(this); 268 super.addView(child, index); 269 } 270 271 @Override 272 public void addView(View child, int width, int height) { 273 if (!(child instanceof CellLayout)) { 274 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 275 } 276 ((CellLayout) child).setOnInterceptTouchListener(this); 277 super.addView(child, width, height); 278 } 279 280 @Override 281 public void addView(View child, LayoutParams params) { 282 if (!(child instanceof CellLayout)) { 283 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 284 } 285 ((CellLayout) child).setOnInterceptTouchListener(this); 286 super.addView(child, params); 287 } 288 289 /** 290 * @return The open folder on the current screen, or null if there is none 291 */ 292 Folder getOpenFolder() { 293 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 294 int count = currentPage.getChildCount(); 295 for (int i = 0; i < count; i++) { 296 View child = currentPage.getChildAt(i); 297 if (child instanceof Folder) { 298 Folder folder = (Folder) child; 299 if (folder.getInfo().opened) 300 return folder; 301 } 302 } 303 return null; 304 } 305 306 ArrayList<Folder> getOpenFolders() { 307 final int screenCount = getChildCount(); 308 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 309 310 for (int screen = 0; screen < screenCount; screen++) { 311 CellLayout currentPage = (CellLayout) getChildAt(screen); 312 int count = currentPage.getChildCount(); 313 for (int i = 0; i < count; i++) { 314 View child = currentPage.getChildAt(i); 315 if (child instanceof Folder) { 316 Folder folder = (Folder) child; 317 if (folder.getInfo().opened) 318 folders.add(folder); 319 break; 320 } 321 } 322 } 323 return folders; 324 } 325 326 boolean isDefaultPageShowing() { 327 return mCurrentPage == mDefaultPage; 328 } 329 330 /** 331 * Sets the current screen. 332 * 333 * @param currentPage 334 */ 335 @Override 336 void setCurrentPage(int currentPage) { 337 super.setCurrentPage(currentPage); 338 updateWallpaperOffset(mScrollX); 339 } 340 341 /** 342 * Adds the specified child in the specified screen. The position and dimension of 343 * the child are defined by x, y, spanX and spanY. 344 * 345 * @param child The child to add in one of the workspace's screens. 346 * @param screen The screen in which to add the child. 347 * @param x The X position of the child in the screen's grid. 348 * @param y The Y position of the child in the screen's grid. 349 * @param spanX The number of cells spanned horizontally by the child. 350 * @param spanY The number of cells spanned vertically by the child. 351 */ 352 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 353 addInScreen(child, screen, x, y, spanX, spanY, false); 354 } 355 356 void addInFullScreen(View child, int screen) { 357 addInScreen(child, screen, 0, 0, -1, -1); 358 } 359 360 /** 361 * Adds the specified child in the specified screen. The position and dimension of 362 * the child are defined by x, y, spanX and spanY. 363 * 364 * @param child The child to add in one of the workspace's screens. 365 * @param screen The screen in which to add the child. 366 * @param x The X position of the child in the screen's grid. 367 * @param y The Y position of the child in the screen's grid. 368 * @param spanX The number of cells spanned horizontally by the child. 369 * @param spanY The number of cells spanned vertically by the child. 370 * @param insert When true, the child is inserted at the beginning of the children list. 371 */ 372 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 373 if (screen < 0 || screen >= getChildCount()) { 374 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 375 + " (was " + screen + "); skipping child"); 376 return; 377 } 378 379 final CellLayout group = (CellLayout) getChildAt(screen); 380 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 381 if (lp == null) { 382 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 383 } else { 384 lp.cellX = x; 385 lp.cellY = y; 386 lp.cellHSpan = spanX; 387 lp.cellVSpan = spanY; 388 } 389 390 // Get the canonical child id to uniquely represent this view in this screen 391 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 392 boolean markCellsAsOccupied = !(child instanceof Folder); 393 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 394 // TODO: This branch occurs when the workspace is adding views 395 // outside of the defined grid 396 // maybe we should be deleting these items from the LauncherModel? 397 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 398 } 399 400 if (!(child instanceof Folder)) { 401 child.setHapticFeedbackEnabled(false); 402 child.setOnLongClickListener(mLongClickListener); 403 } 404 if (child instanceof DropTarget) { 405 mDragController.addDropTarget((DropTarget) child); 406 } 407 } 408 409 public boolean onTouch(View v, MotionEvent event) { 410 // this is an intercepted event being forwarded from a cell layout 411 if (mIsSmall || mIsInUnshrinkAnimation) { 412 mLauncher.onWorkspaceClick((CellLayout) v); 413 return true; 414 } else if (!mPageMoving) { 415 if (v == getChildAt(mCurrentPage - 1)) { 416 snapToPage(mCurrentPage - 1); 417 return true; 418 } else if (v == getChildAt(mCurrentPage + 1)) { 419 snapToPage(mCurrentPage + 1); 420 return true; 421 } 422 } 423 return false; 424 } 425 426 @Override 427 public boolean dispatchUnhandledMove(View focused, int direction) { 428 if (mIsSmall || mIsInUnshrinkAnimation) { 429 // when the home screens are shrunken, shouldn't allow side-scrolling 430 return false; 431 } 432 return super.dispatchUnhandledMove(focused, direction); 433 } 434 435 @Override 436 public boolean onInterceptTouchEvent(MotionEvent ev) { 437 if (mIsSmall || mIsInUnshrinkAnimation) { 438 // when the home screens are shrunken, shouldn't allow side-scrolling 439 return false; 440 } 441 return super.onInterceptTouchEvent(ev); 442 } 443 444 @Override 445 protected void determineScrollingStart(MotionEvent ev) { 446 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 447 } 448 449 protected void onPageBeginMoving() { 450 if (mNextPage != INVALID_PAGE) { 451 // we're snapping to a particular screen 452 enableChildrenCache(mCurrentPage, mNextPage); 453 } else { 454 // this is when user is actively dragging a particular screen, they might 455 // swipe it either left or right (but we won't advance by more than one screen) 456 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 457 } 458 showOutlines(); 459 mPageMoving = true; 460 } 461 462 protected void onPageEndMoving() { 463 clearChildrenCache(); 464 // Hide the outlines, as long as we're not dragging 465 if (!mDragController.dragging()) { 466 hideOutlines(); 467 } 468 // Check for an animation that's waiting to be started 469 if (mAnimOnPageEndMoving != null) { 470 mAnimOnPageEndMoving.start(); 471 mAnimOnPageEndMoving = null; 472 } 473 474 mPageMoving = false; 475 } 476 477 @Override 478 protected void notifyPageSwitchListener() { 479 super.notifyPageSwitchListener(); 480 481 if (mPreviousIndicator != null) { 482 // if we know the next page, we show the indication for it right away; it looks 483 // weird if the indicators are lagging 484 int page = mNextPage; 485 if (page == INVALID_PAGE) { 486 page = mCurrentPage; 487 } 488 mPreviousIndicator.setLevel(page); 489 mNextIndicator.setLevel(page); 490 } 491 Launcher.setScreen(mCurrentPage); 492 }; 493 494 private void updateWallpaperOffset() { 495 updateWallpaperOffset(getChildAt(getChildCount() - 1).getRight() - (mRight - mLeft)); 496 } 497 498 private void updateWallpaperOffset(int scrollRange) { 499 final boolean isStaticWallpaper = (mWallpaperManager != null) && 500 (mWallpaperManager.getWallpaperInfo() == null); 501 if (LauncherApplication.isScreenXLarge() && !isStaticWallpaper) { 502 IBinder token = getWindowToken(); 503 if (token != null) { 504 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0 ); 505 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 506 Math.max(0.f, Math.min(mScrollX/(float)scrollRange, 1.f)), 0); 507 } 508 } 509 } 510 511 public void showOutlines() { 512 if (!mIsSmall && !mIsInUnshrinkAnimation) { 513 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 514 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 515 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 516 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 517 mBackgroundFadeInAnimation.start(); 518 } 519 } 520 521 public void hideOutlines() { 522 if (!mIsSmall && !mIsInUnshrinkAnimation) { 523 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 524 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 525 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 526 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 527 mBackgroundFadeOutAnimation.setStartDelay(BACKGROUND_FADE_OUT_DELAY); 528 mBackgroundFadeOutAnimation.start(); 529 } 530 } 531 532 public void setBackgroundAlpha(float alpha) { 533 mBackgroundAlpha = alpha; 534 for (int i = 0; i < getChildCount(); i++) { 535 CellLayout cl = (CellLayout) getChildAt(i); 536 cl.setBackgroundAlpha(alpha); 537 } 538 } 539 540 public float getBackgroundAlpha() { 541 return mBackgroundAlpha; 542 } 543 544 @Override 545 protected void screenScrolled(int screenCenter) { 546 final int halfScreenSize = getMeasuredWidth() / 2; 547 for (int i = 0; i < getChildCount(); i++) { 548 CellLayout cl = (CellLayout) getChildAt(i); 549 if (cl != null) { 550 int totalDistance = cl.getMeasuredWidth() + mPageSpacing; 551 int delta = screenCenter - (getChildOffset(i) - 552 getRelativeChildOffset(i) + halfScreenSize); 553 554 float scrollProgress = delta/(totalDistance*1.0f); 555 scrollProgress = Math.min(scrollProgress, 1.0f); 556 scrollProgress = Math.max(scrollProgress, -1.0f); 557 558 float mult = mInDragMode ? 1.0f : Math.abs(scrollProgress); 559 cl.setBackgroundAlphaMultiplier(mult); 560 561 float rotation = WORKSPACE_ROTATION * scrollProgress; 562 cl.setRotationY(rotation); 563 } 564 } 565 } 566 567 protected void onAttachedToWindow() { 568 super.onAttachedToWindow(); 569 computeScroll(); 570 mDragController.setWindowToken(getWindowToken()); 571 } 572 573 @Override 574 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 575 super.onLayout(changed, left, top, right, bottom); 576 577 // if shrinkToBottom() is called on initialization, it has to be deferred 578 // until after the first call to onLayout so that it has the correct width 579 if (mWaitingToShrink) { 580 shrink(mWaitingToShrinkPosition, false); 581 mWaitingToShrink = false; 582 } 583 584 if (LauncherApplication.isInPlaceRotationEnabled()) { 585 // When the device is rotated, the scroll position of the current screen 586 // needs to be refreshed 587 setCurrentPage(getCurrentPage()); 588 } 589 } 590 591 @Override 592 protected void dispatchDraw(Canvas canvas) { 593 if (mIsSmall || mIsInUnshrinkAnimation) { 594 // Draw all the workspaces if we're small 595 final int pageCount = getChildCount(); 596 final long drawingTime = getDrawingTime(); 597 for (int i = 0; i < pageCount; i++) { 598 final View page = (View) getChildAt(i); 599 600 drawChild(canvas, page, drawingTime); 601 } 602 } else { 603 super.dispatchDraw(canvas); 604 605 if (mDropView != null) { 606 // We are animating an item that was just dropped on the home screen. 607 // Render its View in the current animation position. 608 canvas.save(Canvas.MATRIX_SAVE_FLAG); 609 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 610 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 611 canvas.translate(xPos, yPos); 612 mDropView.draw(canvas); 613 canvas.restore(); 614 } 615 } 616 } 617 618 @Override 619 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 620 if (!mLauncher.isAllAppsVisible()) { 621 final Folder openFolder = getOpenFolder(); 622 if (openFolder != null) { 623 return openFolder.requestFocus(direction, previouslyFocusedRect); 624 } else { 625 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 626 } 627 } 628 return false; 629 } 630 631 @Override 632 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 633 if (!mLauncher.isAllAppsVisible()) { 634 final Folder openFolder = getOpenFolder(); 635 if (openFolder != null) { 636 openFolder.addFocusables(views, direction); 637 } else { 638 super.addFocusables(views, direction, focusableMode); 639 } 640 } 641 } 642 643 @Override 644 public boolean dispatchTouchEvent(MotionEvent ev) { 645 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 646 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 647 // ie when you click on a mini-screen, it zooms back to that screen) 648 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 649 return false; 650 } 651 } 652 return super.dispatchTouchEvent(ev); 653 } 654 655 void enableChildrenCache(int fromPage, int toPage) { 656 if (fromPage > toPage) { 657 final int temp = fromPage; 658 fromPage = toPage; 659 toPage = temp; 660 } 661 662 final int screenCount = getChildCount(); 663 664 fromPage = Math.max(fromPage, 0); 665 toPage = Math.min(toPage, screenCount - 1); 666 667 for (int i = fromPage; i <= toPage; i++) { 668 final CellLayout layout = (CellLayout) getChildAt(i); 669 layout.setChildrenDrawnWithCacheEnabled(true); 670 layout.setChildrenDrawingCacheEnabled(true); 671 } 672 } 673 674 void clearChildrenCache() { 675 final int screenCount = getChildCount(); 676 for (int i = 0; i < screenCount; i++) { 677 final CellLayout layout = (CellLayout) getChildAt(i); 678 layout.setChildrenDrawnWithCacheEnabled(false); 679 } 680 } 681 682 @Override 683 public boolean onTouchEvent(MotionEvent ev) { 684 if (mLauncher.isAllAppsVisible()) { 685 // Cancel any scrolling that is in progress. 686 if (!mScroller.isFinished()) { 687 mScroller.abortAnimation(); 688 } 689 setCurrentPage(mCurrentPage); 690 return false; // We don't want the events. Let them fall through to the all apps view. 691 } 692 693 return super.onTouchEvent(ev); 694 } 695 696 public boolean isSmall() { 697 return mIsSmall; 698 } 699 700 void shrinkToTop(boolean animated) { 701 shrink(ShrinkPosition.SHRINK_TO_TOP, animated); 702 } 703 704 void shrinkToMiddle() { 705 shrink(ShrinkPosition.SHRINK_TO_MIDDLE, true); 706 } 707 708 void shrinkToBottom() { 709 shrinkToBottom(true); 710 } 711 712 void shrinkToBottom(boolean animated) { 713 shrink(ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN, animated); 714 } 715 716 private float getYScaleForScreen(int screen) { 717 int x = Math.abs(screen - 2); 718 719 // TODO: This should be generalized for use with arbitrary rotation angles. 720 switch(x) { 721 case 0: return EXTRA_SCALE_FACTOR_0; 722 case 1: return EXTRA_SCALE_FACTOR_1; 723 case 2: return EXTRA_SCALE_FACTOR_2; 724 } 725 return 1.0f; 726 } 727 728 // we use this to shrink the workspace for the all apps view and the customize view 729 private void shrink(ShrinkPosition shrinkPosition, boolean animated) { 730 if (mFirstLayout) { 731 // (mFirstLayout == "first layout has not happened yet") 732 // if we get a call to shrink() as part of our initialization (for example, if 733 // Launcher is started in All Apps mode) then we need to wait for a layout call 734 // to get our width so we can layout the mini-screen views correctly 735 mWaitingToShrink = true; 736 mWaitingToShrinkPosition = shrinkPosition; 737 return; 738 } 739 mIsSmall = true; 740 mShrunkenState = shrinkPosition; 741 742 // Stop any scrolling, move to the current page right away 743 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 744 updateWhichPagesAcceptDrops(mShrunkenState); 745 746 // we intercept and reject all touch events when we're small, so be sure to reset the state 747 mTouchState = TOUCH_STATE_REST; 748 mActivePointerId = INVALID_POINTER; 749 750 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 751 currentPage.setBackgroundAlphaMultiplier(1.0f); 752 753 final Resources res = getResources(); 754 final int screenWidth = getWidth(); 755 final int screenHeight = getHeight(); 756 757 // Making the assumption that all pages have the same width as the 0th 758 final int pageWidth = getChildAt(0).getMeasuredWidth(); 759 final int pageHeight = getChildAt(0).getMeasuredHeight(); 760 761 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 762 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 763 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 764 765 final int screenCount = getChildCount(); 766 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 767 768 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 769 float newY = (isPortrait ? 770 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 771 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 772 float finalAlpha = 1.0f; 773 float extraShrinkFactor = 1.0f; 774 if (shrinkPosition == ShrinkPosition.SHRINK_TO_BOTTOM_VISIBLE) { 775 newY = screenHeight - newY - scaledPageHeight; 776 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN) { 777 778 // We shrink and disappear to nothing in the case of all apps 779 // (which is when we shrink to the bottom) 780 newY = screenHeight - newY - scaledPageHeight; 781 finalAlpha = 0.0f; 782 extraShrinkFactor = 0.1f; 783 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_MIDDLE) { 784 newY = screenHeight / 2 - scaledPageHeight / 2; 785 finalAlpha = 1.0f; 786 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_TOP) { 787 newY = (isPortrait ? 788 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 789 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 790 } 791 792 // We animate all the screens to the centered position in workspace 793 // At the same time, the screens become greyed/dimmed 794 795 // newX is initialized to the left-most position of the centered screens 796 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 797 798 // We are going to scale about the center of the view, so we need to adjust the positions 799 // of the views accordingly 800 newX -= (pageWidth - scaledPageWidth) / 2.0f; 801 newY -= (pageHeight - scaledPageHeight) / 2.0f; 802 803 if (mAnimator != null) { 804 mAnimator.cancel(); 805 } 806 mAnimator = new AnimatorSet(); 807 for (int i = 0; i < screenCount; i++) { 808 CellLayout cl = (CellLayout) getChildAt(i); 809 810 float rotation = (-i + 2) * WORKSPACE_ROTATION; 811 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 812 float rotationScaleY = getYScaleForScreen(i); 813 814 if (animated) { 815 final int duration = res.getInteger(R.integer.config_workspaceShrinkTime); 816 ObjectAnimator anim = ObjectAnimator.ofPropertyValuesHolder(cl, 817 PropertyValuesHolder.ofFloat("x", newX), 818 PropertyValuesHolder.ofFloat("y", newY), 819 PropertyValuesHolder.ofFloat("scaleX", 820 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 821 PropertyValuesHolder.ofFloat("scaleY", 822 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 823 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 824 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 825 PropertyValuesHolder.ofFloat("rotationY", rotation)); 826 anim.setDuration(duration); 827 mAnimator.playTogether(anim); 828 } else { 829 cl.setX((int)newX); 830 cl.setY((int)newY); 831 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 832 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 833 cl.setBackgroundAlpha(finalAlpha); 834 cl.setAlpha(finalAlpha); 835 cl.setRotationY(rotation); 836 } 837 // increment newX for the next screen 838 newX += scaledPageWidth + extraScaledSpacing; 839 } 840 if (animated) { 841 mAnimator.start(); 842 } 843 setChildrenDrawnWithCacheEnabled(true); 844 } 845 846 847 private void updateWhichPagesAcceptDrops(ShrinkPosition state) { 848 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 849 } 850 851 852 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkPosition state, int spanX, int spanY) { 853 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 854 } 855 856 private void updateWhichPagesAcceptDropsHelper( 857 ShrinkPosition state, boolean isDragHappening, int spanX, int spanY) { 858 final int screenCount = getChildCount(); 859 for (int i = 0; i < screenCount; i++) { 860 CellLayout cl = (CellLayout) getChildAt(i); 861 862 switch (state) { 863 case SHRINK_TO_TOP: 864 if (!isDragHappening) { 865 boolean showDropHighlight = i == mCurrentPage; 866 cl.setAcceptsDrops(showDropHighlight); 867 break; 868 } 869 // otherwise, fall through below and mark non-full screens as accepting drops 870 case SHRINK_TO_BOTTOM_HIDDEN: 871 case SHRINK_TO_BOTTOM_VISIBLE: 872 if (!isDragHappening) { 873 // even if a drag isn't happening, we don't want to show a screen as 874 // accepting drops if it doesn't have at least one free cell 875 spanX = 1; 876 spanY = 1; 877 } 878 // the page accepts drops if we can find at least one empty spot 879 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 880 break; 881 default: 882 throw new RuntimeException( 883 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkPosition"); 884 } 885 } 886 } 887 888 /* 889 * 890 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 891 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 892 * 893 * These methods mark the appropriate pages as accepting drops (which alters their visual 894 * appearance) and, if the pages are hidden, makes them visible. 895 * 896 */ 897 public void onDragStartedWithItemSpans(int spanX, int spanY) { 898 updateWhichPagesAcceptDropsDuringDrag(mShrunkenState, spanX, spanY); 899 if (mShrunkenState == ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN) { 900 shrink(ShrinkPosition.SHRINK_TO_BOTTOM_VISIBLE, true); 901 } 902 } 903 904 public void onDragStartedWithItemMinSize(int minWidth, int minHeight) { 905 int[] spanXY = CellLayout.rectToCell(getResources(), minWidth, minHeight, null); 906 onDragStartedWithItemSpans(spanXY[0], spanXY[1]); 907 } 908 909 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 910 // never dragged over 911 public void onDragStopped() { 912 updateWhichPagesAcceptDrops(mShrunkenState); 913 } 914 915 // We call this when we trigger an unshrink by clicking on the CellLayout cl 916 public void unshrink(CellLayout clThatWasClicked) { 917 int newCurrentPage = mCurrentPage; 918 final int screenCount = getChildCount(); 919 for (int i = 0; i < screenCount; i++) { 920 if (getChildAt(i) == clThatWasClicked) { 921 newCurrentPage = i; 922 } 923 } 924 unshrink(newCurrentPage); 925 } 926 927 @Override 928 protected boolean handlePagingClicks() { 929 return true; 930 } 931 932 private void unshrink(int newCurrentPage) { 933 if (mIsSmall) { 934 int newX = getChildOffset(newCurrentPage) - getRelativeChildOffset(newCurrentPage); 935 int delta = newX - mScrollX; 936 937 final int screenCount = getChildCount(); 938 for (int i = 0; i < screenCount; i++) { 939 CellLayout cl = (CellLayout) getChildAt(i); 940 cl.setX(cl.getX() + delta); 941 } 942 setCurrentPage(newCurrentPage); 943 unshrink(); 944 } 945 } 946 947 void unshrink() { 948 unshrink(true); 949 } 950 951 void unshrink(boolean animated) { 952 if (mIsSmall) { 953 mIsSmall = false; 954 if (mAnimator != null) { 955 mAnimator.cancel(); 956 } 957 mAnimator = new AnimatorSet(); 958 final int screenCount = getChildCount(); 959 960 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 961 for (int i = 0; i < screenCount; i++) { 962 final CellLayout cl = (CellLayout)getChildAt(i); 963 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 964 float rotation = 0.0f; 965 966 if (i < mCurrentPage) { 967 rotation = WORKSPACE_ROTATION; 968 } else if (i > mCurrentPage) { 969 rotation = -WORKSPACE_ROTATION; 970 } 971 972 if (animated) { 973 mAnimator.playTogether( 974 ObjectAnimator.ofFloat(cl, "translationX", 0.0f).setDuration(duration), 975 ObjectAnimator.ofFloat(cl, "translationY", 0.0f).setDuration(duration), 976 ObjectAnimator.ofFloat(cl, "scaleX", 1.0f).setDuration(duration), 977 ObjectAnimator.ofFloat(cl, "scaleY", 1.0f).setDuration(duration), 978 ObjectAnimator.ofFloat(cl, "backgroundAlpha", 0.0f).setDuration(duration), 979 ObjectAnimator.ofFloat(cl, "alpha", finalAlphaValue).setDuration(duration), 980 ObjectAnimator.ofFloat(cl, "rotationY", rotation).setDuration(duration)); 981 } else { 982 cl.setTranslationX(0.0f); 983 cl.setTranslationY(0.0f); 984 cl.setScaleX(1.0f); 985 cl.setScaleY(1.0f); 986 cl.setBackgroundAlpha(0.0f); 987 cl.setAlpha(finalAlphaValue); 988 cl.setRotationY(rotation); 989 } 990 } 991 if (animated) { 992 // If we call this when we're not animated, onAnimationEnd is never called on 993 // the listener; make sure we only use the listener when we're actually animating 994 mAnimator.addListener(mUnshrinkAnimationListener); 995 mAnimator.start(); 996 } 997 } 998 } 999 1000 /** 1001 * Draw the View v into the given Canvas. 1002 * 1003 * @param v the view to draw 1004 * @param destCanvas the canvas to draw on 1005 * @param padding the horizontal and vertical padding to use when drawing 1006 */ 1007 private void drawDragView(View v, Canvas destCanvas, int padding) { 1008 final Rect clipRect = mTempRect; 1009 v.getDrawingRect(clipRect); 1010 1011 // For a TextView, adjust the clip rect so that we don't include the text label 1012 if (v instanceof TextView) { 1013 final int iconHeight = ((TextView)v).getCompoundPaddingTop() - v.getPaddingTop(); 1014 clipRect.bottom = clipRect.top + iconHeight; 1015 } 1016 1017 // Draw the View into the bitmap. 1018 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1019 // they set scrollX and scrollY to large values to achieve centered text 1020 1021 destCanvas.save(); 1022 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1023 destCanvas.clipRect(clipRect, Op.REPLACE); 1024 v.draw(destCanvas); 1025 destCanvas.restore(); 1026 } 1027 1028 /** 1029 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1030 * Responsibility for the bitmap is transferred to the caller. 1031 */ 1032 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1033 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1034 final Bitmap b = Bitmap.createBitmap( 1035 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1036 1037 canvas.setBitmap(b); 1038 drawDragView(v, canvas, padding); 1039 mOutlineHelper.applyExpensiveOuterOutline(b, canvas, outlineColor, true); 1040 1041 return b; 1042 } 1043 1044 /** 1045 * Creates a drag outline to represent a drop (that we don't have the actual information for 1046 * yet). May be changed in the future to alter the drop outline slightly depending on the 1047 * clip description mime data. 1048 */ 1049 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1050 Resources r = getResources(); 1051 final int outlineColor = r.getColor(R.color.drag_outline_color); 1052 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1053 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1054 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1055 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1056 final Bitmap b = Bitmap.createBitmap( 1057 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1058 1059 canvas.setBitmap(b); 1060 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1061 rectRadius, rectRadius, mExternalDragOutlinePaint); 1062 mOutlineHelper.applyExpensiveOuterOutline(b, canvas, outlineColor, true); 1063 1064 return b; 1065 } 1066 1067 /** 1068 * Returns a new bitmap to show when the given View is being dragged around. 1069 * Responsibility for the bitmap is transferred to the caller. 1070 */ 1071 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1072 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1073 final Bitmap b = Bitmap.createBitmap( 1074 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1075 1076 canvas.setBitmap(b); 1077 canvas.drawBitmap(mDragOutline, 0, 0, null); 1078 drawDragView(v, canvas, padding); 1079 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1080 1081 return b; 1082 } 1083 1084 void startDrag(CellLayout.CellInfo cellInfo) { 1085 View child = cellInfo.cell; 1086 1087 // Make sure the drag was started by a long press as opposed to a long click. 1088 if (!child.isInTouchMode()) { 1089 return; 1090 } 1091 1092 mDragInfo = cellInfo; 1093 mDragInfo.screen = mCurrentPage; 1094 1095 CellLayout current = getCurrentDropLayout(); 1096 1097 current.onDragChild(child); 1098 child.setVisibility(View.GONE); 1099 1100 child.clearFocus(); 1101 child.setPressed(false); 1102 1103 final Canvas canvas = new Canvas(); 1104 1105 // We need to add extra padding to the bitmap to make room for the glow effect 1106 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1107 1108 // The outline is used to visualize where the item will land if dropped 1109 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1110 1111 // The drag bitmap follows the touch point around on the screen 1112 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1113 1114 final int bmpWidth = b.getWidth(); 1115 final int bmpHeight = b.getHeight(); 1116 child.getLocationOnScreen(mTempXY); 1117 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1118 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1119 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1120 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1121 b.recycle(); 1122 } 1123 1124 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1125 boolean insertAtFirst, int intersectX, int intersectY) { 1126 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1127 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1128 1129 final int[] cellXY = new int[2]; 1130 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1131 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1132 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1133 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1134 cellXY[0], cellXY[1]); 1135 } 1136 1137 private void setPositionForDropAnimation( 1138 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1139 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1140 1141 // Based on the position of the drag view, find the top left of the original view 1142 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1143 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1144 viewX -= getResources().getInteger(R.integer.config_dragViewOffsetX); 1145 viewY -= getResources().getInteger(R.integer.config_dragViewOffsetY); 1146 1147 // Set its old pos (in the new parent's coordinates); it will be animated 1148 // in animateViewIntoPosition after the next layout pass 1149 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1150 lp.oldY = viewY - (parent.getTop() - mScrollY); 1151 } 1152 1153 public void animateViewIntoPosition(final View view) { 1154 final CellLayout parent = (CellLayout) view.getParent(); 1155 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1156 1157 // Convert the animation params to be relative to the Workspace, not the CellLayout 1158 final int fromX = lp.oldX + parent.getLeft(); 1159 final int fromY = lp.oldY + parent.getTop(); 1160 1161 final int dx = lp.x - lp.oldX; 1162 final int dy = lp.y - lp.oldY; 1163 1164 // Calculate the duration of the animation based on the object's distance 1165 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1166 final Resources res = getResources(); 1167 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1168 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1169 if (dist < maxDist) { 1170 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1171 } 1172 1173 // Lazy initialize the animation 1174 if (mDropAnim == null) { 1175 mDropAnim = new ValueAnimator(); 1176 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1177 1178 // The view is invisible during the animation; we render it manually. 1179 mDropAnim.addListener(new AnimatorListenerAdapter() { 1180 public void onAnimationStart(Animator animation) { 1181 // Set this here so that we don't render it until the animation begins 1182 mDropView = view; 1183 } 1184 1185 public void onAnimationEnd(Animator animation) { 1186 if (mDropView != null) { 1187 mDropView.setVisibility(View.VISIBLE); 1188 mDropView = null; 1189 } 1190 } 1191 }); 1192 } else { 1193 mDropAnim.end(); // Make sure it's not already running 1194 } 1195 1196 mDropAnim.setDuration(duration); 1197 mDropAnim.setFloatValues(0.0f, 1.0f); 1198 mDropAnim.removeAllUpdateListeners(); 1199 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1200 public void onAnimationUpdate(ValueAnimator animation) { 1201 final float percent = (Float) animation.getAnimatedValue(); 1202 // Invalidate the old position 1203 invalidate(mDropViewPos[0], mDropViewPos[1], 1204 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1205 1206 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1207 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1208 invalidate(mDropViewPos[0], mDropViewPos[1], 1209 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1210 } 1211 }); 1212 1213 1214 view.setVisibility(View.INVISIBLE); 1215 1216 if (!mScroller.isFinished()) { 1217 mAnimOnPageEndMoving = mDropAnim; 1218 } else { 1219 mDropAnim.start(); 1220 } 1221 } 1222 1223 /** 1224 * {@inheritDoc} 1225 */ 1226 public boolean acceptDrop(DragSource source, int x, int y, 1227 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1228 1229 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1230 if (source != this) { 1231 // Don't accept the drop if we're not over a screen at time of drop 1232 if (mDragTargetLayout == null) { 1233 return false; 1234 } 1235 1236 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1237 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1238 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1239 1240 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1241 1242 // Don't accept the drop if there's no room for the item 1243 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1244 mLauncher.showOutOfSpaceMessage(); 1245 return false; 1246 } 1247 } 1248 return true; 1249 } 1250 1251 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1252 DragView dragView, Object dragInfo) { 1253 1254 int originX = x - xOffset; 1255 int originY = y - yOffset; 1256 1257 if (mIsSmall || mIsInUnshrinkAnimation) { 1258 // get originX and originY in the local coordinate system of the screen 1259 mTempOriginXY[0] = originX; 1260 mTempOriginXY[1] = originY; 1261 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1262 originX = (int)mTempOriginXY[0]; 1263 originY = (int)mTempOriginXY[1]; 1264 } 1265 1266 if (source != this) { 1267 onDropExternal(originX, originY, dragInfo, mDragTargetLayout); 1268 } else if (mDragInfo != null) { 1269 final View cell = mDragInfo.cell; 1270 if (mDragTargetLayout != null) { 1271 // Move internally 1272 mTargetCell = findNearestVacantArea(originX, originY, 1273 mDragInfo.spanX, mDragInfo.spanY, cell, mDragTargetLayout, 1274 mTargetCell); 1275 1276 if (mTargetCell == null) { 1277 snapToPage(mDragInfo.screen); 1278 } else { 1279 int screen = indexOfChild(mDragTargetLayout); 1280 if (screen != mDragInfo.screen) { 1281 // Reparent the view 1282 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1283 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1284 mDragInfo.spanX, mDragInfo.spanY); 1285 } 1286 1287 // update the item's position after drop 1288 final ItemInfo info = (ItemInfo) cell.getTag(); 1289 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1290 mDragTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1291 lp.cellX = mTargetCell[0]; 1292 lp.cellY = mTargetCell[1]; 1293 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1294 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1295 1296 LauncherModel.moveItemInDatabase(mLauncher, info, 1297 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1298 lp.cellX, lp.cellY); 1299 } 1300 } 1301 1302 final CellLayout parent = (CellLayout) cell.getParent(); 1303 1304 // Prepare it to be animated into its new position 1305 // This must be called after the view has been re-parented 1306 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1307 parent.onDropChild(cell); 1308 } 1309 } 1310 1311 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1312 int yOffset, DragView dragView, Object dragInfo) { 1313 mDragTargetLayout = null; // Reset the drag state 1314 1315 if (!mIsSmall) { 1316 mDragTargetLayout = getCurrentDropLayout(); 1317 mDragTargetLayout.onDragEnter(); 1318 showOutlines(); 1319 mInDragMode = true; 1320 CellLayout cl = (CellLayout) getChildAt(mCurrentPage); 1321 cl.setBackgroundAlphaMultiplier(1.0f); 1322 } 1323 } 1324 1325 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1326 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1327 1328 if (mIsSmall || mIsInUnshrinkAnimation) { 1329 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1330 return null; 1331 } 1332 // We may need to delegate the drag to a child view. If a 1x1 item 1333 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1334 // then drag events should be handled by that child. 1335 1336 ItemInfo item = (ItemInfo)dragInfo; 1337 CellLayout currentLayout = getCurrentDropLayout(); 1338 1339 int dragPointX, dragPointY; 1340 if (item.spanX == 1 && item.spanY == 1) { 1341 // For a 1x1, calculate the drop cell exactly as in onDragOver 1342 dragPointX = x - xOffset; 1343 dragPointY = y - yOffset; 1344 } else { 1345 // Otherwise, use the exact drag coordinates 1346 dragPointX = x; 1347 dragPointY = y; 1348 } 1349 dragPointX += mScrollX - currentLayout.getLeft(); 1350 dragPointY += mScrollY - currentLayout.getTop(); 1351 1352 // If we are dragging over a cell that contains a DropTarget that will 1353 // accept the drop, delegate to that DropTarget. 1354 final int[] cellXY = mTempCell; 1355 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1356 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1357 if (child instanceof DropTarget) { 1358 DropTarget target = (DropTarget)child; 1359 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1360 return target; 1361 } 1362 } 1363 return null; 1364 } 1365 1366 /** 1367 * Global drag and drop handler 1368 */ 1369 @Override 1370 public boolean onDragEvent(DragEvent event) { 1371 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1372 final int[] pos = new int[2]; 1373 layout.getLocationOnScreen(pos); 1374 // We need to offset the drag coordinates to layout coordinate space 1375 final int x = (int) event.getX() - pos[0]; 1376 final int y = (int) event.getY() - pos[1]; 1377 1378 switch (event.getAction()) { 1379 case DragEvent.ACTION_DRAG_STARTED: 1380 // Check if we have enough space on this screen to add a new shortcut 1381 if (!layout.findCellForSpan(pos, 1, 1)) { 1382 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1383 Toast.LENGTH_SHORT).show(); 1384 return false; 1385 } 1386 1387 ClipDescription desc = event.getClipDescription(); 1388 if (desc.filterMimeTypes(ClipDescription.MIMETYPE_TEXT_INTENT) != null) { 1389 // Create the drag outline 1390 // We need to add extra padding to the bitmap to make room for the glow effect 1391 final Canvas canvas = new Canvas(); 1392 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1393 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1394 1395 // Show the current page outlines to indicate that we can accept this drop 1396 showOutlines(); 1397 layout.setHover(true); 1398 layout.onDragEnter(); 1399 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1400 1401 return true; 1402 } 1403 break; 1404 case DragEvent.ACTION_DRAG_LOCATION: 1405 // Visualize the drop location 1406 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1407 return true; 1408 case DragEvent.ACTION_DROP: 1409 // Check if we have enough space on this screen to add a new shortcut 1410 if (!layout.findCellForSpan(pos, 1, 1)) { 1411 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1412 Toast.LENGTH_SHORT).show(); 1413 return false; 1414 } 1415 1416 // Try and add any shortcuts 1417 int newDropCount = 0; 1418 final LauncherModel model = mLauncher.getModel(); 1419 final ClipData data = event.getClipData(); 1420 final int itemCount = data.getItemCount(); 1421 for (int i = 0; i < itemCount; ++i) { 1422 final Intent intent = data.getItem(i).getIntent(); 1423 if (intent != null) { 1424 Object info = null; 1425 if (model.validateShortcutIntent(intent)) { 1426 info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1427 } else if (model.validateWidgetIntent(intent)) { 1428 final ComponentName component = ComponentName.unflattenFromString( 1429 intent.getStringExtra(InstallWidgetReceiver.EXTRA_APPWIDGET_COMPONENT)); 1430 final AppWidgetProviderInfo appInfo = 1431 model.findAppWidgetProviderInfoWithComponent(mContext, component); 1432 1433 PendingAddWidgetInfo createInfo = new PendingAddWidgetInfo(); 1434 createInfo.itemType = LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET; 1435 createInfo.componentName = appInfo.provider; 1436 createInfo.minWidth = appInfo.minWidth; 1437 createInfo.minHeight = appInfo.minHeight; 1438 createInfo.configurationData = intent.getParcelableExtra( 1439 InstallWidgetReceiver.EXTRA_APPWIDGET_CONFIGURATION_DATA); 1440 info = createInfo; 1441 } 1442 1443 if (info != null) { 1444 onDropExternal(x, y, info, layout); 1445 newDropCount++; 1446 } 1447 } 1448 } 1449 1450 // Show error message if we couldn't accept any of the items 1451 if (newDropCount <= 0) { 1452 Toast.makeText(mContext, "Only Shortcut Intents accepted.", 1453 Toast.LENGTH_SHORT).show(); 1454 } 1455 1456 return true; 1457 case DragEvent.ACTION_DRAG_ENDED: 1458 // Hide the page outlines after the drop 1459 layout.setHover(false); 1460 layout.onDragExit(); 1461 hideOutlines(); 1462 return true; 1463 } 1464 return super.onDragEvent(event); 1465 } 1466 1467 /* 1468 * 1469 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1470 * coordinate space. The argument xy is modified with the return result. 1471 * 1472 */ 1473 void mapPointFromSelfToChild(View v, float[] xy) { 1474 mapPointFromSelfToChild(v, xy, null); 1475 } 1476 1477 /* 1478 * 1479 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1480 * coordinate space. The argument xy is modified with the return result. 1481 * 1482 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1483 * computing it itself; we use this to avoid redundant matrix inversions in 1484 * findMatchingPageForDragOver 1485 * 1486 */ 1487 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1488 if (cachedInverseMatrix == null) { 1489 v.getMatrix().invert(mTempInverseMatrix); 1490 cachedInverseMatrix = mTempInverseMatrix; 1491 } 1492 xy[0] = xy[0] + mScrollX - v.getLeft(); 1493 xy[1] = xy[1] + mScrollY - v.getTop(); 1494 cachedInverseMatrix.mapPoints(xy); 1495 } 1496 1497 /* 1498 * 1499 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1500 * the parent View's coordinate space. The argument xy is modified with the return result. 1501 * 1502 */ 1503 void mapPointFromChildToSelf(View v, float[] xy) { 1504 v.getMatrix().mapPoints(xy); 1505 xy[0] -= (mScrollX - v.getLeft()); 1506 xy[1] -= (mScrollY - v.getTop()); 1507 } 1508 1509 static private float squaredDistance(float[] point1, float[] point2) { 1510 float distanceX = point1[0] - point2[0]; 1511 float distanceY = point2[1] - point2[1]; 1512 return distanceX * distanceX + distanceY * distanceY; 1513 } 1514 1515 /* 1516 * 1517 * Returns true if the passed CellLayout cl overlaps with dragView 1518 * 1519 */ 1520 boolean overlaps(CellLayout cl, DragView dragView, 1521 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1522 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1523 final float[] draggedItemTopLeft = mTempDragCoordinates; 1524 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1525 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1526 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1527 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1528 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1529 1530 // Transform the dragged item's top left coordinates 1531 // to the CellLayout's local coordinates 1532 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1533 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1534 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1535 1536 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1537 // Transform the dragged item's bottom right coordinates 1538 // to the CellLayout's local coordinates 1539 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1540 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1541 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1542 1543 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1544 float overlap = (overlapRegionRight - overlapRegionLeft) * 1545 (overlapRegionBottom - overlapRegionTop); 1546 if (overlap > 0) { 1547 return true; 1548 } 1549 } 1550 } 1551 return false; 1552 } 1553 1554 /* 1555 * 1556 * This method returns the CellLayout that is currently being dragged to. In order to drag 1557 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 1558 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 1559 * 1560 * Return null if no CellLayout is currently being dragged over 1561 * 1562 */ 1563 private CellLayout findMatchingPageForDragOver( 1564 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 1565 // We loop through all the screens (ie CellLayouts) and see which ones overlap 1566 // with the item being dragged and then choose the one that's closest to the touch point 1567 final int screenCount = getChildCount(); 1568 CellLayout bestMatchingScreen = null; 1569 float smallestDistSoFar = Float.MAX_VALUE; 1570 1571 for (int i = 0; i < screenCount; i++) { 1572 CellLayout cl = (CellLayout)getChildAt(i); 1573 1574 final float[] touchXy = mTempTouchCoordinates; 1575 touchXy[0] = originX + offsetX; 1576 touchXy[1] = originY + offsetY; 1577 1578 // Transform the touch coordinates to the CellLayout's local coordinates 1579 // If the touch point is within the bounds of the cell layout, we can return immediately 1580 cl.getMatrix().invert(mTempInverseMatrix); 1581 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 1582 1583 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 1584 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 1585 return cl; 1586 } 1587 1588 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 1589 // Get the center of the cell layout in screen coordinates 1590 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 1591 cellLayoutCenter[0] = cl.getWidth()/2; 1592 cellLayoutCenter[1] = cl.getHeight()/2; 1593 mapPointFromChildToSelf(cl, cellLayoutCenter); 1594 1595 touchXy[0] = originX + offsetX; 1596 touchXy[1] = originY + offsetY; 1597 1598 // Calculate the distance between the center of the CellLayout 1599 // and the touch point 1600 float dist = squaredDistance(touchXy, cellLayoutCenter); 1601 1602 if (dist < smallestDistSoFar) { 1603 smallestDistSoFar = dist; 1604 bestMatchingScreen = cl; 1605 } 1606 } 1607 } 1608 return bestMatchingScreen; 1609 } 1610 1611 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 1612 DragView dragView, Object dragInfo) { 1613 // When touch is inside the scroll area, skip dragOver actions for the current screen 1614 if (!mInScrollArea) { 1615 CellLayout layout; 1616 int originX = x - xOffset; 1617 int originY = y - yOffset; 1618 if (mIsSmall || mIsInUnshrinkAnimation) { 1619 layout = findMatchingPageForDragOver( 1620 dragView, originX, originY, xOffset, yOffset); 1621 1622 if (layout != mDragTargetLayout) { 1623 if (mDragTargetLayout != null) { 1624 mDragTargetLayout.setHover(false); 1625 } 1626 mDragTargetLayout = layout; 1627 if (mDragTargetLayout != null) { 1628 mDragTargetLayout.setHover(true); 1629 } 1630 } 1631 } else { 1632 layout = getCurrentDropLayout(); 1633 1634 final ItemInfo item = (ItemInfo)dragInfo; 1635 if (dragInfo instanceof LauncherAppWidgetInfo) { 1636 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 1637 1638 if (widgetInfo.spanX == -1) { 1639 // Calculate the grid spans needed to fit this widget 1640 int[] spans = layout.rectToCell( 1641 widgetInfo.minWidth, widgetInfo.minHeight, null); 1642 item.spanX = spans[0]; 1643 item.spanY = spans[1]; 1644 } 1645 } 1646 1647 if (source instanceof AllAppsPagedView) { 1648 // This is a hack to fix the point used to determine which cell an icon from 1649 // the all apps screen is over 1650 if (item != null && item.spanX == 1 && layout != null) { 1651 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 1652 1653 originX += dragRegionLeft - dragView.getDragRegionLeft(); 1654 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 1655 dragView.setDragRegion(dragView.getDragRegionLeft(), 1656 dragView.getDragRegionTop(), 1657 layout.getCellWidth(), 1658 dragView.getDragRegionHeight()); 1659 } 1660 } 1661 } 1662 1663 if (layout != mDragTargetLayout) { 1664 if (mDragTargetLayout != null) { 1665 mDragTargetLayout.onDragExit(); 1666 } 1667 layout.onDragEnter(); 1668 mDragTargetLayout = layout; 1669 } 1670 1671 // only visualize the drop locations for moving icons within the home screen on 1672 // tablet on phone, we also visualize icons dragged in from All Apps 1673 if ((!LauncherApplication.isScreenXLarge() || source == this) 1674 && mDragTargetLayout != null) { 1675 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 1676 int localOriginX = originX - (mDragTargetLayout.getLeft() - mScrollX); 1677 int localOriginY = originY - (mDragTargetLayout.getTop() - mScrollY); 1678 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 1679 localOriginX, localOriginY, item.spanX, item.spanY); 1680 } 1681 } 1682 } 1683 } 1684 1685 public void onDragExit(DragSource source, int x, int y, int xOffset, 1686 int yOffset, DragView dragView, Object dragInfo) { 1687 if (mDragTargetLayout != null) { 1688 mDragTargetLayout.onDragExit(); 1689 } 1690 if (!mIsPageMoving) { 1691 hideOutlines(); 1692 mInDragMode = false; 1693 } 1694 clearAllHovers(); 1695 } 1696 1697 private void onDropExternal(int x, int y, Object dragInfo, 1698 CellLayout cellLayout) { 1699 onDropExternal(x, y, dragInfo, cellLayout, false); 1700 } 1701 1702 /** 1703 * Add the item specified by dragInfo to the given layout. 1704 * This is basically the equivalent of onDropExternal, except it's not initiated 1705 * by drag and drop. 1706 * @return true if successful 1707 */ 1708 public boolean addExternalItemToScreen(Object dragInfo, View layout) { 1709 CellLayout cl = (CellLayout) layout; 1710 ItemInfo info = (ItemInfo) dragInfo; 1711 1712 if (cl.findCellForSpan(mTempEstimate, info.spanX, info.spanY)) { 1713 onDropExternal(-1, -1, dragInfo, cl, false); 1714 return true; 1715 } 1716 mLauncher.showOutOfSpaceMessage(); 1717 return false; 1718 } 1719 1720 // Drag from somewhere else 1721 // NOTE: This can also be called when we are outside of a drag event, when we want 1722 // to add an item to one of the workspace screens. 1723 private void onDropExternal(int x, int y, Object dragInfo, 1724 CellLayout cellLayout, boolean insertAtFirst) { 1725 int screen = indexOfChild(cellLayout); 1726 if (dragInfo instanceof PendingAddItemInfo) { 1727 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 1728 // When dragging and dropping from customization tray, we deal with creating 1729 // widgets/shortcuts/folders in a slightly different way 1730 int[] touchXY = new int[2]; 1731 touchXY[0] = x; 1732 touchXY[1] = y; 1733 switch (info.itemType) { 1734 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 1735 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 1736 break; 1737 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 1738 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 1739 break; 1740 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 1741 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 1742 break; 1743 default: 1744 throw new IllegalStateException("Unknown item type: " + info.itemType); 1745 } 1746 cellLayout.onDragExit(); 1747 cellLayout.animateDrop(); 1748 return; 1749 } 1750 1751 // This is for other drag/drop cases, like dragging from All Apps 1752 ItemInfo info = (ItemInfo) dragInfo; 1753 1754 View view = null; 1755 1756 switch (info.itemType) { 1757 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 1758 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 1759 if (info.container == NO_ID && info instanceof ApplicationInfo) { 1760 // Came from all apps -- make a copy 1761 info = new ShortcutInfo((ApplicationInfo) info); 1762 } 1763 view = mLauncher.createShortcut(R.layout.application, cellLayout, 1764 (ShortcutInfo) info); 1765 break; 1766 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 1767 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 1768 cellLayout, ((UserFolderInfo) info)); 1769 break; 1770 default: 1771 throw new IllegalStateException("Unknown item type: " + info.itemType); 1772 } 1773 1774 // If the view is null, it has already been added. 1775 if (view == null) { 1776 cellLayout.onDragExit(); 1777 } else { 1778 mTargetCell = findNearestVacantArea(x, y, 1, 1, null, cellLayout, mTargetCell); 1779 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 1780 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 1781 cellLayout.onDropChild(view); 1782 cellLayout.animateDrop(); 1783 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1784 1785 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1786 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1787 lp.cellX, lp.cellY); 1788 } 1789 } 1790 1791 /** 1792 * Return the current {@link CellLayout}, correctly picking the destination 1793 * screen while a scroll is in progress. 1794 */ 1795 private CellLayout getCurrentDropLayout() { 1796 // if we're currently small, use findMatchingPageForDragOver instead 1797 if (mIsSmall) return null; 1798 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 1799 return (CellLayout) getChildAt(index); 1800 } 1801 1802 /** 1803 * Return the current CellInfo describing our current drag; this method exists 1804 * so that Launcher can sync this object with the correct info when the activity is created/ 1805 * destroyed 1806 * 1807 */ 1808 public CellLayout.CellInfo getDragInfo() { 1809 return mDragInfo; 1810 } 1811 1812 /** 1813 * Calculate the nearest cell where the given object would be dropped. 1814 */ 1815 private int[] findNearestVacantArea(int pixelX, int pixelY, 1816 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 1817 1818 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 1819 int localPixelY = pixelY - (layout.getTop() - mScrollY); 1820 1821 // Find the best target drop location 1822 return layout.findNearestVacantArea( 1823 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 1824 } 1825 1826 /** 1827 * Estimate the size that a child with the given dimensions will take in the current screen. 1828 */ 1829 void estimateChildSize(int minWidth, int minHeight, int[] result) { 1830 ((CellLayout)getChildAt(mCurrentPage)).estimateChildSize(minWidth, minHeight, result); 1831 } 1832 1833 void setLauncher(Launcher launcher) { 1834 mLauncher = launcher; 1835 } 1836 1837 public void setDragController(DragController dragController) { 1838 mDragController = dragController; 1839 } 1840 1841 public void onDropCompleted(View target, boolean success) { 1842 if (success) { 1843 if (target != this && mDragInfo != null) { 1844 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 1845 cellLayout.removeView(mDragInfo.cell); 1846 if (mDragInfo.cell instanceof DropTarget) { 1847 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 1848 } 1849 // final Object tag = mDragInfo.cell.getTag(); 1850 } 1851 } else if (mDragInfo != null) { 1852 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell); 1853 } 1854 1855 mDragOutline = null; 1856 mDragInfo = null; 1857 } 1858 1859 public boolean isDropEnabled() { 1860 return true; 1861 } 1862 1863 @Override 1864 protected void onRestoreInstanceState(Parcelable state) { 1865 super.onRestoreInstanceState(state); 1866 Launcher.setScreen(mCurrentPage); 1867 } 1868 1869 @Override 1870 public void scrollLeft() { 1871 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1872 super.scrollLeft(); 1873 } 1874 } 1875 1876 @Override 1877 public void scrollRight() { 1878 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1879 super.scrollRight(); 1880 } 1881 } 1882 1883 @Override 1884 public void onEnterScrollArea(int direction) { 1885 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1886 mInScrollArea = true; 1887 final int screen = getCurrentPage() + ((direction == DragController.SCROLL_LEFT) ? -1 : 1); 1888 if (0 <= screen && screen < getChildCount()) { 1889 ((CellLayout) getChildAt(screen)).setHover(true); 1890 } 1891 1892 if (mDragTargetLayout != null) { 1893 mDragTargetLayout.onDragExit(); 1894 mDragTargetLayout = null; 1895 } 1896 } 1897 } 1898 1899 private void clearAllHovers() { 1900 final int childCount = getChildCount(); 1901 for (int i = 0; i < childCount; i++) { 1902 ((CellLayout) getChildAt(i)).setHover(false); 1903 } 1904 } 1905 1906 @Override 1907 public void onExitScrollArea() { 1908 if (mInScrollArea) { 1909 mInScrollArea = false; 1910 clearAllHovers(); 1911 } 1912 } 1913 1914 public Folder getFolderForTag(Object tag) { 1915 final int screenCount = getChildCount(); 1916 for (int screen = 0; screen < screenCount; screen++) { 1917 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 1918 int count = currentScreen.getChildCount(); 1919 for (int i = 0; i < count; i++) { 1920 View child = currentScreen.getChildAt(i); 1921 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1922 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 1923 Folder f = (Folder) child; 1924 if (f.getInfo() == tag && f.getInfo().opened) { 1925 return f; 1926 } 1927 } 1928 } 1929 } 1930 return null; 1931 } 1932 1933 public View getViewForTag(Object tag) { 1934 int screenCount = getChildCount(); 1935 for (int screen = 0; screen < screenCount; screen++) { 1936 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 1937 int count = currentScreen.getChildCount(); 1938 for (int i = 0; i < count; i++) { 1939 View child = currentScreen.getChildAt(i); 1940 if (child.getTag() == tag) { 1941 return child; 1942 } 1943 } 1944 } 1945 return null; 1946 } 1947 1948 1949 void removeItems(final ArrayList<ApplicationInfo> apps) { 1950 final int screenCount = getChildCount(); 1951 final PackageManager manager = getContext().getPackageManager(); 1952 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 1953 1954 final HashSet<String> packageNames = new HashSet<String>(); 1955 final int appCount = apps.size(); 1956 for (int i = 0; i < appCount; i++) { 1957 packageNames.add(apps.get(i).componentName.getPackageName()); 1958 } 1959 1960 for (int i = 0; i < screenCount; i++) { 1961 final CellLayout layout = (CellLayout) getChildAt(i); 1962 1963 // Avoid ANRs by treating each screen separately 1964 post(new Runnable() { 1965 public void run() { 1966 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 1967 childrenToRemove.clear(); 1968 1969 int childCount = layout.getChildCount(); 1970 for (int j = 0; j < childCount; j++) { 1971 final View view = layout.getChildAt(j); 1972 Object tag = view.getTag(); 1973 1974 if (tag instanceof ShortcutInfo) { 1975 final ShortcutInfo info = (ShortcutInfo) tag; 1976 final Intent intent = info.intent; 1977 final ComponentName name = intent.getComponent(); 1978 1979 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 1980 for (String packageName: packageNames) { 1981 if (packageName.equals(name.getPackageName())) { 1982 LauncherModel.deleteItemFromDatabase(mLauncher, info); 1983 childrenToRemove.add(view); 1984 } 1985 } 1986 } 1987 } else if (tag instanceof UserFolderInfo) { 1988 final UserFolderInfo info = (UserFolderInfo) tag; 1989 final ArrayList<ShortcutInfo> contents = info.contents; 1990 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 1991 final int contentsCount = contents.size(); 1992 boolean removedFromFolder = false; 1993 1994 for (int k = 0; k < contentsCount; k++) { 1995 final ShortcutInfo appInfo = contents.get(k); 1996 final Intent intent = appInfo.intent; 1997 final ComponentName name = intent.getComponent(); 1998 1999 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2000 for (String packageName: packageNames) { 2001 if (packageName.equals(name.getPackageName())) { 2002 toRemove.add(appInfo); 2003 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2004 removedFromFolder = true; 2005 } 2006 } 2007 } 2008 } 2009 2010 contents.removeAll(toRemove); 2011 if (removedFromFolder) { 2012 final Folder folder = getOpenFolder(); 2013 if (folder != null) 2014 folder.notifyDataSetChanged(); 2015 } 2016 } else if (tag instanceof LiveFolderInfo) { 2017 final LiveFolderInfo info = (LiveFolderInfo) tag; 2018 final Uri uri = info.uri; 2019 final ProviderInfo providerInfo = manager.resolveContentProvider( 2020 uri.getAuthority(), 0); 2021 2022 if (providerInfo != null) { 2023 for (String packageName: packageNames) { 2024 if (packageName.equals(providerInfo.packageName)) { 2025 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2026 childrenToRemove.add(view); 2027 } 2028 } 2029 } 2030 } else if (tag instanceof LauncherAppWidgetInfo) { 2031 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2032 final AppWidgetProviderInfo provider = 2033 widgets.getAppWidgetInfo(info.appWidgetId); 2034 if (provider != null) { 2035 for (String packageName: packageNames) { 2036 if (packageName.equals(provider.provider.getPackageName())) { 2037 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2038 childrenToRemove.add(view); 2039 } 2040 } 2041 } 2042 } 2043 } 2044 2045 childCount = childrenToRemove.size(); 2046 for (int j = 0; j < childCount; j++) { 2047 View child = childrenToRemove.get(j); 2048 layout.removeViewInLayout(child); 2049 if (child instanceof DropTarget) { 2050 mDragController.removeDropTarget((DropTarget)child); 2051 } 2052 } 2053 2054 if (childCount > 0) { 2055 layout.requestLayout(); 2056 layout.invalidate(); 2057 } 2058 } 2059 }); 2060 } 2061 } 2062 2063 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2064 final int screenCount = getChildCount(); 2065 for (int i = 0; i < screenCount; i++) { 2066 final CellLayout layout = (CellLayout) getChildAt(i); 2067 int childCount = layout.getChildCount(); 2068 for (int j = 0; j < childCount; j++) { 2069 final View view = layout.getChildAt(j); 2070 Object tag = view.getTag(); 2071 if (tag instanceof ShortcutInfo) { 2072 ShortcutInfo info = (ShortcutInfo)tag; 2073 // We need to check for ACTION_MAIN otherwise getComponent() might 2074 // return null for some shortcuts (for instance, for shortcuts to 2075 // web pages.) 2076 final Intent intent = info.intent; 2077 final ComponentName name = intent.getComponent(); 2078 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2079 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2080 final int appCount = apps.size(); 2081 for (int k = 0; k < appCount; k++) { 2082 ApplicationInfo app = apps.get(k); 2083 if (app.componentName.equals(name)) { 2084 info.setIcon(mIconCache.getIcon(info.intent)); 2085 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2086 new FastBitmapDrawable(info.getIcon(mIconCache)), 2087 null, null); 2088 } 2089 } 2090 } 2091 } 2092 } 2093 } 2094 } 2095 2096 void moveToDefaultScreen(boolean animate) { 2097 if (mIsSmall || mIsInUnshrinkAnimation) { 2098 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2099 } else if (animate) { 2100 snapToPage(mDefaultPage); 2101 } else { 2102 setCurrentPage(mDefaultPage); 2103 } 2104 getChildAt(mDefaultPage).requestFocus(); 2105 } 2106 2107 void setIndicators(Drawable previous, Drawable next) { 2108 mPreviousIndicator = previous; 2109 mNextIndicator = next; 2110 previous.setLevel(mCurrentPage); 2111 next.setLevel(mCurrentPage); 2112 } 2113 2114 @Override 2115 public void syncPages() { 2116 } 2117 2118 @Override 2119 public void syncPageItems(int page) { 2120 } 2121 2122} 2123