Workspace.java revision 1c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55
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 android.animation.Animator; 20import android.animation.AnimatorListenerAdapter; 21import android.animation.AnimatorSet; 22import android.animation.ObjectAnimator; 23import android.animation.TimeInterpolator; 24import android.animation.ValueAnimator; 25import android.animation.Animator.AnimatorListener; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.AlertDialog; 28import android.app.WallpaperManager; 29import android.appwidget.AppWidgetManager; 30import android.appwidget.AppWidgetProviderInfo; 31import android.content.ClipData; 32import android.content.ClipDescription; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.content.res.TypedArray; 39import android.graphics.Bitmap; 40import android.graphics.Camera; 41import android.graphics.Canvas; 42import android.graphics.Color; 43import android.graphics.Matrix; 44import android.graphics.Paint; 45import android.graphics.Rect; 46import android.graphics.RectF; 47import android.graphics.Region.Op; 48import android.graphics.drawable.Drawable; 49import android.os.IBinder; 50import android.os.Parcelable; 51import android.util.AttributeSet; 52import android.util.DisplayMetrics; 53import android.util.Log; 54import android.util.Pair; 55import android.view.Display; 56import android.view.DragEvent; 57import android.view.MotionEvent; 58import android.view.View; 59import android.view.ViewGroup; 60import android.view.animation.DecelerateInterpolator; 61import android.widget.ImageView; 62import android.widget.TextView; 63import android.widget.Toast; 64 65import com.android.launcher.R; 66import com.android.launcher2.FolderIcon.FolderRingAnimator; 67import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 68 69import java.util.ArrayList; 70import java.util.HashSet; 71import java.util.List; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 DragController.DragListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // Y rotation to apply to the workspace screens 85 private static final float WORKSPACE_ROTATION = 12.5f; 86 87 // These are extra scale factors to apply to the mini home screens 88 // so as to achieve the desired transform 89 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 90 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 91 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 92 93 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 94 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 95 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 96 97 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 98 private static final int BACKGROUND_FADE_IN_DURATION = 350; 99 100 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 101 102 // These animators are used to fade the children's outlines 103 private ObjectAnimator mChildrenOutlineFadeInAnimation; 104 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 105 private float mChildrenOutlineAlpha = 0; 106 107 // These properties refer to the background protection gradient used for AllApps and Customize 108 private ValueAnimator mBackgroundFadeInAnimation; 109 private ValueAnimator mBackgroundFadeOutAnimation; 110 private Drawable mBackground; 111 boolean mDrawBackground = true; 112 private float mBackgroundAlpha = 0; 113 private float mOverScrollMaxBackgroundAlpha = 0.0f; 114 private int mOverScrollPageIndex = -1; 115 private AnimatorSet mDividerAnimator; 116 117 private final WallpaperManager mWallpaperManager; 118 private IBinder mWindowToken; 119 120 private int mDefaultPage; 121 122 /** 123 * CellInfo for the cell that is currently being dragged 124 */ 125 private CellLayout.CellInfo mDragInfo; 126 127 /** 128 * Target drop area calculated during last acceptDrop call. 129 */ 130 private int[] mTargetCell = new int[2]; 131 132 /** 133 * The CellLayout that is currently being dragged over 134 */ 135 private CellLayout mDragTargetLayout = null; 136 137 private Launcher mLauncher; 138 private IconCache mIconCache; 139 private DragController mDragController; 140 141 // These are temporary variables to prevent having to allocate a new object just to 142 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 143 private int[] mTempCell = new int[2]; 144 private int[] mTempEstimate = new int[2]; 145 private float[] mDragViewVisualCenter = new float[2]; 146 private float[] mTempDragCoordinates = new float[2]; 147 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 148 private float[] mTempDragBottomRightCoordinates = new float[2]; 149 private Matrix mTempInverseMatrix = new Matrix(); 150 151 private SpringLoadedDragController mSpringLoadedDragController; 152 private float mSpringLoadedShrinkFactor; 153 154 private static final int DEFAULT_CELL_COUNT_X = 4; 155 private static final int DEFAULT_CELL_COUNT_Y = 4; 156 157 // State variable that indicates whether the pages are small (ie when you're 158 // in all apps or customize mode) 159 160 enum State { NORMAL, SPRING_LOADED, SMALL }; 161 private State mState; 162 private boolean mIsSwitchingState = false; 163 164 private boolean mSwitchStateAfterFirstLayout = false; 165 private State mStateAfterFirstLayout; 166 167 private AnimatorSet mAnimator; 168 private AnimatorListener mShrinkAnimationListener; 169 private AnimatorListener mUnshrinkAnimationListener; 170 // Working around the face that cancelled animations may not actually be cancelled if they 171 // are cancelled before starting 172 private boolean mShrinkAnimationEnabled; 173 private boolean mUnshrinkAnimationEnabled; 174 175 boolean mAnimatingViewIntoPlace = false; 176 boolean mIsDragOccuring = false; 177 boolean mChildrenLayersEnabled = true; 178 179 /** Is the user is dragging an item near the edge of a page? */ 180 private boolean mInScrollArea = false; 181 182 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 183 private Bitmap mDragOutline = null; 184 private final Rect mTempRect = new Rect(); 185 private final int[] mTempXY = new int[2]; 186 187 // Paint used to draw external drop outline 188 private final Paint mExternalDragOutlinePaint = new Paint(); 189 190 // Camera and Matrix used to determine the final position of a neighboring CellLayout 191 private final Matrix mMatrix = new Matrix(); 192 private final Camera mCamera = new Camera(); 193 private final float mTempFloat2[] = new float[2]; 194 195 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 196 int mWallpaperWidth; 197 int mWallpaperHeight; 198 WallpaperOffsetInterpolator mWallpaperOffset; 199 boolean mUpdateWallpaperOffsetImmediately = false; 200 boolean mSyncWallpaperOffsetWithScroll = true; 201 private Runnable mDelayedResizeRunnable; 202 203 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 204 private static final int FOLDER_CREATION_TIMEOUT = 250; 205 private final Alarm mFolderCreationAlarm = new Alarm(); 206 private FolderRingAnimator mDragFolderRingAnimator = null; 207 private View mLastDragOverView = null; 208 private boolean mCreateUserFolderOnDrop = false; 209 210 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 211 private float mXDown; 212 private float mYDown; 213 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 214 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 215 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 216 217 // These variables are used for storing the initial and final values during workspace animations 218 private int mSavedScrollX; 219 private float mSavedRotationY; 220 private float mSavedTranslationX; 221 private float mCurrentScaleX; 222 private float mCurrentScaleY; 223 private float mCurrentRotationY; 224 private float mCurrentTranslationX; 225 private float mCurrentTranslationY; 226 private float[] mOldTranslationXs; 227 private float[] mOldTranslationYs; 228 private float[] mOldScaleXs; 229 private float[] mOldScaleYs; 230 private float[] mOldBackgroundAlphas; 231 private float[] mOldBackgroundAlphaMultipliers; 232 private float[] mOldAlphas; 233 private float[] mOldRotationYs; 234 private float[] mNewTranslationXs; 235 private float[] mNewTranslationYs; 236 private float[] mNewScaleXs; 237 private float[] mNewScaleYs; 238 private float[] mNewBackgroundAlphas; 239 private float[] mNewBackgroundAlphaMultipliers; 240 private float[] mNewAlphas; 241 private float[] mNewRotationYs; 242 private float mTransitionProgress; 243 244 /** 245 * Used to inflate the Workspace from XML. 246 * 247 * @param context The application's context. 248 * @param attrs The attributes set containing the Workspace's customization values. 249 */ 250 public Workspace(Context context, AttributeSet attrs) { 251 this(context, attrs, 0); 252 } 253 254 /** 255 * Used to inflate the Workspace from XML. 256 * 257 * @param context The application's context. 258 * @param attrs The attributes set containing the Workspace's customization values. 259 * @param defStyle Unused. 260 */ 261 public Workspace(Context context, AttributeSet attrs, int defStyle) { 262 super(context, attrs, defStyle); 263 mContentIsRefreshable = false; 264 265 // With workspace, data is available straight from the get-go 266 setDataIsReady(); 267 268 if (!LauncherApplication.isScreenLarge()) { 269 mCenterPagesVertically = false; 270 if (!LauncherApplication.isScreenLandscape(context)) { 271 mFadeInAdjacentScreens = false; 272 } 273 } 274 275 mWallpaperManager = WallpaperManager.getInstance(context); 276 277 int cellCountX = DEFAULT_CELL_COUNT_X; 278 int cellCountY = DEFAULT_CELL_COUNT_Y; 279 280 TypedArray a = context.obtainStyledAttributes(attrs, 281 R.styleable.Workspace, defStyle, 0); 282 283 final Resources res = context.getResources(); 284 if (LauncherApplication.isScreenLarge()) { 285 // Determine number of rows/columns dynamically 286 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 287 // Around that ratio we should make cells the same size in portrait and 288 // landscape 289 TypedArray actionBarSizeTypedArray = 290 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 291 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 292 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 293 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 294 295 cellCountX = 1; 296 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 297 cellCountX++; 298 } 299 300 cellCountY = 1; 301 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 302 <= smallestScreenDim - systemBarHeight) { 303 cellCountY++; 304 } 305 } 306 307 mSpringLoadedShrinkFactor = 308 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 309 310 // if the value is manually specified, use that instead 311 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 312 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 313 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 314 a.recycle(); 315 316 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 317 setHapticFeedbackEnabled(false); 318 319 initWorkspace(); 320 321 // Disable multitouch across the workspace/all apps/customize tray 322 setMotionEventSplittingEnabled(true); 323 } 324 325 public void onDragStart(DragSource source, Object info, int dragAction) { 326 mIsDragOccuring = true; 327 updateChildrenLayersEnabled(); 328 mLauncher.lockScreenOrientation(); 329 } 330 331 public void onDragEnd() { 332 mIsDragOccuring = false; 333 updateChildrenLayersEnabled(); 334 mLauncher.unlockScreenOrientation(); 335 } 336 337 /** 338 * Initializes various states for this workspace. 339 */ 340 protected void initWorkspace() { 341 Context context = getContext(); 342 mCurrentPage = mDefaultPage; 343 Launcher.setScreen(mCurrentPage); 344 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 345 mIconCache = app.getIconCache(); 346 mExternalDragOutlinePaint.setAntiAlias(true); 347 setWillNotDraw(false); 348 349 try { 350 final Resources res = getResources(); 351 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 352 } catch (Resources.NotFoundException e) { 353 // In this case, we will skip drawing background protection 354 } 355 356 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 357 @Override 358 public void onAnimationStart(Animator animation) { 359 mIsSwitchingState = true; 360 } 361 362 @Override 363 public void onAnimationEnd(Animator animation) { 364 mIsSwitchingState = false; 365 mSyncWallpaperOffsetWithScroll = true; 366 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 367 mAnimator = null; 368 updateChildrenLayersEnabled(); 369 } 370 }; 371 mShrinkAnimationListener = new AnimatorListenerAdapter() { 372 @Override 373 public void onAnimationStart(Animator animation) { 374 mIsSwitchingState = true; 375 } 376 @Override 377 public void onAnimationEnd(Animator animation) { 378 mIsSwitchingState = false; 379 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 380 mAnimator = null; 381 } 382 }; 383 mSnapVelocity = 600; 384 mWallpaperOffset = new WallpaperOffsetInterpolator(); 385 } 386 387 @Override 388 protected int getScrollMode() { 389 return SmoothPagedView.X_LARGE_MODE; 390 } 391 392 private void onAddView(View child) { 393 if (!(child instanceof CellLayout)) { 394 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 395 } 396 CellLayout cl = ((CellLayout) child); 397 cl.setOnInterceptTouchListener(this); 398 cl.setClickable(true); 399 cl.enableHardwareLayers(); 400 } 401 402 @Override 403 public void addView(View child, int index, LayoutParams params) { 404 onAddView(child); 405 super.addView(child, index, params); 406 } 407 408 @Override 409 public void addView(View child) { 410 onAddView(child); 411 super.addView(child); 412 } 413 414 @Override 415 public void addView(View child, int index) { 416 onAddView(child); 417 super.addView(child, index); 418 } 419 420 @Override 421 public void addView(View child, int width, int height) { 422 onAddView(child); 423 super.addView(child, width, height); 424 } 425 426 @Override 427 public void addView(View child, LayoutParams params) { 428 onAddView(child); 429 super.addView(child, params); 430 } 431 432 /** 433 * @return The open folder on the current screen, or null if there is none 434 */ 435 Folder getOpenFolder() { 436 DragLayer dragLayer = mLauncher.getDragLayer(); 437 int count = dragLayer.getChildCount(); 438 for (int i = 0; i < count; i++) { 439 View child = dragLayer.getChildAt(i); 440 if (child instanceof Folder) { 441 Folder folder = (Folder) child; 442 if (folder.getInfo().opened) 443 return folder; 444 } 445 } 446 return null; 447 } 448 449 boolean isTouchActive() { 450 return mTouchState != TOUCH_STATE_REST; 451 } 452 453 /** 454 * Adds the specified child in the specified screen. The position and dimension of 455 * the child are defined by x, y, spanX and spanY. 456 * 457 * @param child The child to add in one of the workspace's screens. 458 * @param screen The screen in which to add the child. 459 * @param x The X position of the child in the screen's grid. 460 * @param y The Y position of the child in the screen's grid. 461 * @param spanX The number of cells spanned horizontally by the child. 462 * @param spanY The number of cells spanned vertically by the child. 463 */ 464 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 465 addInScreen(child, container, screen, x, y, spanX, spanY, false); 466 } 467 468 /** 469 * Adds the specified child in the specified screen. The position and dimension of 470 * the child are defined by x, y, spanX and spanY. 471 * 472 * @param child The child to add in one of the workspace's screens. 473 * @param screen The screen in which to add the child. 474 * @param x The X position of the child in the screen's grid. 475 * @param y The Y position of the child in the screen's grid. 476 * @param spanX The number of cells spanned horizontally by the child. 477 * @param spanY The number of cells spanned vertically by the child. 478 * @param insert When true, the child is inserted at the beginning of the children list. 479 */ 480 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 481 boolean insert) { 482 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 483 if (screen < 0 || screen >= getChildCount()) { 484 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 485 + " (was " + screen + "); skipping child"); 486 return; 487 } 488 } 489 490 final CellLayout layout; 491 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 492 layout = mLauncher.getHotseat().getLayout(); 493 child.setOnKeyListener(null); 494 495 if (screen < 0) { 496 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 497 } else { 498 // Note: We do this to ensure that the hotseat is always laid out in the orientation 499 // of the hotseat in order regardless of which orientation they were added 500 x = mLauncher.getHotseat().getCellXFromOrder(screen); 501 y = mLauncher.getHotseat().getCellYFromOrder(screen); 502 } 503 } else { 504 layout = (CellLayout) getChildAt(screen); 505 child.setOnKeyListener(new BubbleTextViewKeyEventListener()); 506 } 507 508 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 509 if (lp == null) { 510 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 511 } else { 512 lp.cellX = x; 513 lp.cellY = y; 514 lp.cellHSpan = spanX; 515 lp.cellVSpan = spanY; 516 } 517 518 if (spanX < 0 && spanY < 0) { 519 lp.isLockedToGrid = false; 520 } 521 522 // Get the canonical child id to uniquely represent this view in this screen 523 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 524 boolean markCellsAsOccupied = !(child instanceof Folder); 525 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 526 // TODO: This branch occurs when the workspace is adding views 527 // outside of the defined grid 528 // maybe we should be deleting these items from the LauncherModel? 529 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 530 } 531 532 if (!(child instanceof Folder)) { 533 child.setHapticFeedbackEnabled(false); 534 child.setOnLongClickListener(mLongClickListener); 535 } 536 if (child instanceof DropTarget) { 537 mDragController.addDropTarget((DropTarget) child); 538 } 539 } 540 541 /** 542 * Check if the point (x, y) hits a given page. 543 */ 544 private boolean hitsPage(int index, float x, float y) { 545 final View page = getChildAt(index); 546 if (page != null) { 547 float[] localXY = { x, y }; 548 mapPointFromSelfToChild(page, localXY); 549 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 550 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 551 } 552 return false; 553 } 554 555 @Override 556 protected boolean hitsPreviousPage(float x, float y) { 557 // mNextPage is set to INVALID_PAGE whenever we are stationary. 558 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 559 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 560 return hitsPage(current - 1, x, y); 561 } 562 563 @Override 564 protected boolean hitsNextPage(float x, float y) { 565 // mNextPage is set to INVALID_PAGE whenever we are stationary. 566 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 567 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 568 return hitsPage(current + 1, x, y); 569 } 570 571 /** 572 * Called directly from a CellLayout (not by the framework), after we've been added as a 573 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 574 * that it should intercept touch events, which is not something that is normally supported. 575 */ 576 @Override 577 public boolean onTouch(View v, MotionEvent event) { 578 return (isSmall() || mIsSwitchingState); 579 } 580 581 public boolean isSwitchingState() { 582 return mIsSwitchingState; 583 } 584 585 protected void onWindowVisibilityChanged (int visibility) { 586 mLauncher.onWindowVisibilityChanged(visibility); 587 } 588 589 @Override 590 public boolean dispatchUnhandledMove(View focused, int direction) { 591 if (isSmall() || mIsSwitchingState) { 592 // when the home screens are shrunken, shouldn't allow side-scrolling 593 return false; 594 } 595 return super.dispatchUnhandledMove(focused, direction); 596 } 597 598 @Override 599 public boolean onInterceptTouchEvent(MotionEvent ev) { 600 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 601 mXDown = ev.getX(); 602 mYDown = ev.getY(); 603 } 604 605 return super.onInterceptTouchEvent(ev); 606 } 607 608 @Override 609 protected void determineScrollingStart(MotionEvent ev) { 610 if (!isSmall() && !mIsSwitchingState) { 611 float deltaX = Math.abs(ev.getX() - mXDown); 612 float deltaY = Math.abs(ev.getY() - mYDown); 613 614 if (Float.compare(deltaX, 0f) == 0) return; 615 616 float slope = deltaY / deltaX; 617 float theta = (float) Math.atan(slope); 618 619 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 620 cancelCurrentPageLongPress(); 621 } 622 623 if (theta > MAX_SWIPE_ANGLE) { 624 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 625 return; 626 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 627 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 628 // increase the touch slop to make it harder to begin scrolling the workspace. This 629 // results in vertically scrolling widgets to more easily. The higher the angle, the 630 // more we increase touch slop. 631 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 632 float extraRatio = (float) 633 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 634 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 635 } else { 636 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 637 super.determineScrollingStart(ev); 638 } 639 } 640 } 641 642 @Override 643 protected boolean isScrollingIndicatorEnabled() { 644 return mState != State.SPRING_LOADED; 645 } 646 647 protected void onPageBeginMoving() { 648 super.onPageBeginMoving(); 649 650 if (isHardwareAccelerated()) { 651 updateChildrenLayersEnabled(); 652 } else { 653 if (mNextPage != INVALID_PAGE) { 654 // we're snapping to a particular screen 655 enableChildrenCache(mCurrentPage, mNextPage); 656 } else { 657 // this is when user is actively dragging a particular screen, they might 658 // swipe it either left or right (but we won't advance by more than one screen) 659 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 660 } 661 } 662 663 // Only show page outlines as we pan if we are on large screen 664 if (LauncherApplication.isScreenLarge()) { 665 showOutlines(); 666 } 667 } 668 669 protected void onPageEndMoving() { 670 super.onPageEndMoving(); 671 672 if (isHardwareAccelerated()) { 673 updateChildrenLayersEnabled(); 674 } else { 675 clearChildrenCache(); 676 } 677 678 // Hide the outlines, as long as we're not dragging 679 if (!mDragController.dragging()) { 680 // Only hide page outlines as we pan if we are on large screen 681 if (LauncherApplication.isScreenLarge()) { 682 hideOutlines(); 683 } 684 } 685 mOverScrollMaxBackgroundAlpha = 0.0f; 686 mOverScrollPageIndex = -1; 687 688 if (mDelayedResizeRunnable != null) { 689 mDelayedResizeRunnable.run(); 690 mDelayedResizeRunnable = null; 691 } 692 } 693 694 @Override 695 protected void notifyPageSwitchListener() { 696 super.notifyPageSwitchListener(); 697 Launcher.setScreen(mCurrentPage); 698 }; 699 700 // As a ratio of screen height, the total distance we want the parallax effect to span 701 // vertically 702 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 703 return 1.1f; 704 } 705 706 // As a ratio of screen height, the total distance we want the parallax effect to span 707 // horizontally 708 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 709 float aspectRatio = width / (float) height; 710 711 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 712 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 713 // We will use these two data points to extrapolate how much the wallpaper parallax effect 714 // to span (ie travel) at any aspect ratio: 715 716 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 717 final float ASPECT_RATIO_PORTRAIT = 10/16f; 718 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 719 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 720 721 // To find out the desired width at different aspect ratios, we use the following two 722 // formulas, where the coefficient on x is the aspect ratio (width/height): 723 // (16/10)x + y = 1.5 724 // (10/16)x + y = 1.2 725 // We solve for x and y and end up with a final formula: 726 final float x = 727 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 728 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 729 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 730 return x * aspectRatio + y; 731 } 732 733 // The range of scroll values for Workspace 734 private int getScrollRange() { 735 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 736 } 737 738 protected void setWallpaperDimension() { 739 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 740 DisplayMetrics displayMetrics = new DisplayMetrics(); 741 display.getRealMetrics(displayMetrics); 742 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 743 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 744 745 // We need to ensure that there is enough extra space in the wallpaper for the intended 746 // parallax effects 747 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 748 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 749 new Thread("setWallpaperDimension") { 750 public void run() { 751 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 752 } 753 }.start(); 754 } 755 756 public void setVerticalWallpaperOffset(float offset) { 757 mWallpaperOffset.setFinalY(offset); 758 } 759 public float getVerticalWallpaperOffset() { 760 return mWallpaperOffset.getCurrY(); 761 } 762 public void setHorizontalWallpaperOffset(float offset) { 763 mWallpaperOffset.setFinalX(offset); 764 } 765 public float getHorizontalWallpaperOffset() { 766 return mWallpaperOffset.getCurrX(); 767 } 768 769 private float wallpaperOffsetForCurrentScroll() { 770 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 771 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 772 // The wallpaper travel width is how far, from left to right, the wallpaper will move 773 // at this orientation (for example, in portrait mode we don't move all the way to the 774 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 775 int wallpaperTravelWidth = (int) (display.getWidth() * 776 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 777 if (!isStaticWallpaper) { 778 wallpaperTravelWidth = mWallpaperWidth; 779 } 780 781 // Set wallpaper offset steps (1 / (number of screens - 1)) 782 // We have 3 vertical offset states (centered, and then top/bottom aligned 783 // for all apps/customize) 784 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 785 786 int scrollRange = getScrollRange(); 787 float scrollProgressOffset = 0; 788 789 // Account for overscroll: you only see the absolute edge of the wallpaper if 790 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 791 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 792 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 793 if (isStaticWallpaper) { 794 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 795 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 796 scrollRange += 2 * overscrollOffset; 797 } 798 799 float scrollProgress = 800 mScrollX / (float) scrollRange + scrollProgressOffset; 801 float offsetInDips = wallpaperTravelWidth * scrollProgress + 802 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 803 float offset = offsetInDips / (float) mWallpaperWidth; 804 return offset; 805 } 806 private void syncWallpaperOffsetWithScroll() { 807 final boolean enableWallpaperEffects = isHardwareAccelerated(); 808 if (enableWallpaperEffects) { 809 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 810 } 811 } 812 813 public void updateWallpaperOffsetImmediately() { 814 mUpdateWallpaperOffsetImmediately = true; 815 } 816 817 private void updateWallpaperOffsets() { 818 boolean updateNow = false; 819 boolean keepUpdating = true; 820 if (mUpdateWallpaperOffsetImmediately) { 821 updateNow = true; 822 keepUpdating = false; 823 mWallpaperOffset.jumpToFinal(); 824 mUpdateWallpaperOffsetImmediately = false; 825 } else { 826 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 827 } 828 if (updateNow) { 829 if (mWindowToken != null) { 830 mWallpaperManager.setWallpaperOffsets(mWindowToken, 831 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 832 } 833 } 834 if (keepUpdating) { 835 fastInvalidate(); 836 } 837 } 838 839 class WallpaperOffsetInterpolator { 840 float mFinalHorizontalWallpaperOffset = 0.0f; 841 float mFinalVerticalWallpaperOffset = 0.5f; 842 float mHorizontalWallpaperOffset = 0.0f; 843 float mVerticalWallpaperOffset = 0.5f; 844 long mLastWallpaperOffsetUpdateTime; 845 boolean mIsMovingFast; 846 boolean mOverrideHorizontalCatchupConstant; 847 float mHorizontalCatchupConstant = 0.35f; 848 float mVerticalCatchupConstant = 0.35f; 849 850 public WallpaperOffsetInterpolator() { 851 } 852 853 public void setOverrideHorizontalCatchupConstant(boolean override) { 854 mOverrideHorizontalCatchupConstant = override; 855 } 856 857 public void setHorizontalCatchupConstant(float f) { 858 mHorizontalCatchupConstant = f; 859 } 860 861 public void setVerticalCatchupConstant(float f) { 862 mVerticalCatchupConstant = f; 863 } 864 865 public boolean computeScrollOffset() { 866 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 867 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 868 mIsMovingFast = false; 869 return false; 870 } 871 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 872 boolean isLandscape = display.getWidth() > display.getHeight(); 873 874 long currentTime = System.currentTimeMillis(); 875 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 876 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 877 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 878 879 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 880 if (!mIsMovingFast && xdiff > 0.07) { 881 mIsMovingFast = true; 882 } 883 884 float fractionToCatchUpIn1MsHorizontal; 885 if (mOverrideHorizontalCatchupConstant) { 886 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 887 } else if (mIsMovingFast) { 888 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 889 } else { 890 // slow 891 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 892 } 893 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 894 895 fractionToCatchUpIn1MsHorizontal /= 33f; 896 fractionToCatchUpIn1MsVertical /= 33f; 897 898 final float UPDATE_THRESHOLD = 0.00001f; 899 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 900 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 901 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 902 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 903 if (jumpToFinalValue) { 904 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 905 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 906 } else { 907 float percentToCatchUpVertical = 908 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 909 float percentToCatchUpHorizontal = 910 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 911 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 912 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 913 } 914 915 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 916 return true; 917 } 918 919 public float getCurrX() { 920 return mHorizontalWallpaperOffset; 921 } 922 923 public float getFinalX() { 924 return mFinalHorizontalWallpaperOffset; 925 } 926 927 public float getCurrY() { 928 return mVerticalWallpaperOffset; 929 } 930 931 public float getFinalY() { 932 return mFinalVerticalWallpaperOffset; 933 } 934 935 public void setFinalX(float x) { 936 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 937 } 938 939 public void setFinalY(float y) { 940 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 941 } 942 943 public void jumpToFinal() { 944 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 945 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 946 } 947 } 948 949 @Override 950 public void computeScroll() { 951 super.computeScroll(); 952 if (mSyncWallpaperOffsetWithScroll) { 953 syncWallpaperOffsetWithScroll(); 954 } 955 } 956 957 void showOutlines() { 958 if (!isSmall() && !mIsSwitchingState) { 959 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 960 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 961 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 962 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 963 mChildrenOutlineFadeInAnimation.start(); 964 } 965 } 966 967 void hideOutlines() { 968 if (!isSmall() && !mIsSwitchingState) { 969 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 970 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 971 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 972 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 973 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 974 mChildrenOutlineFadeOutAnimation.start(); 975 } 976 } 977 978 public void showOutlinesTemporarily() { 979 if (!mIsPageMoving && !isTouchActive()) { 980 snapToPage(mCurrentPage); 981 } 982 } 983 984 public void setChildrenOutlineAlpha(float alpha) { 985 mChildrenOutlineAlpha = alpha; 986 for (int i = 0; i < getChildCount(); i++) { 987 CellLayout cl = (CellLayout) getChildAt(i); 988 cl.setBackgroundAlpha(alpha); 989 } 990 } 991 992 public float getChildrenOutlineAlpha() { 993 return mChildrenOutlineAlpha; 994 } 995 996 void disableBackground() { 997 mDrawBackground = false; 998 } 999 void enableBackground() { 1000 mDrawBackground = true; 1001 } 1002 1003 private void showBackgroundGradientForAllApps(boolean animated) { 1004 showBackgroundGradient(animated); 1005 } 1006 1007 private void showBackgroundGradient(boolean animated) { 1008 if (mBackground == null) return; 1009 if (mBackgroundFadeOutAnimation != null) { 1010 mBackgroundFadeOutAnimation.cancel(); 1011 mBackgroundFadeOutAnimation = null; 1012 } 1013 if (mBackgroundFadeInAnimation != null) { 1014 mBackgroundFadeInAnimation.cancel(); 1015 mBackgroundFadeInAnimation = null; 1016 } 1017 final float finalAlpha = 1f; 1018 if (animated) { 1019 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), finalAlpha); 1020 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 1021 public void onAnimationUpdate(ValueAnimator animation) { 1022 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1023 } 1024 }); 1025 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1026 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 1027 mBackgroundFadeInAnimation.start(); 1028 } else { 1029 setBackgroundAlpha(finalAlpha); 1030 } 1031 } 1032 1033 private void hideBackgroundGradient(float finalAlpha, boolean animated) { 1034 if (mBackground == null) return; 1035 if (mBackgroundFadeInAnimation != null) { 1036 mBackgroundFadeInAnimation.cancel(); 1037 mBackgroundFadeInAnimation = null; 1038 } 1039 if (mBackgroundFadeOutAnimation != null) { 1040 mBackgroundFadeOutAnimation.cancel(); 1041 mBackgroundFadeOutAnimation = null; 1042 } 1043 if (animated) { 1044 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), finalAlpha); 1045 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1046 public void onAnimationUpdate(ValueAnimator animation) { 1047 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1048 } 1049 }); 1050 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1051 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1052 mBackgroundFadeOutAnimation.start(); 1053 } else { 1054 setBackgroundAlpha(finalAlpha); 1055 } 1056 } 1057 1058 public void setBackgroundAlpha(float alpha) { 1059 if (alpha != mBackgroundAlpha) { 1060 mBackgroundAlpha = alpha; 1061 invalidate(); 1062 } 1063 } 1064 1065 public float getBackgroundAlpha() { 1066 return mBackgroundAlpha; 1067 } 1068 1069 /** 1070 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1071 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1072 * as being larger. This method computes what offset the rotated view should be translated 1073 * in order to minimize this perceived gap. 1074 * @param degrees Angle of the view 1075 * @param width Width of the view 1076 * @param height Height of the view 1077 * @return Offset to be used in a View.setTranslationX() call 1078 */ 1079 private float getOffsetXForRotation(float degrees, int width, int height) { 1080 mMatrix.reset(); 1081 mCamera.save(); 1082 mCamera.rotateY(Math.abs(degrees)); 1083 mCamera.getMatrix(mMatrix); 1084 mCamera.restore(); 1085 1086 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1087 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1088 mTempFloat2[0] = width; 1089 mTempFloat2[1] = height; 1090 mMatrix.mapPoints(mTempFloat2); 1091 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1092 } 1093 1094 float backgroundAlphaInterpolator(float r) { 1095 float pivotA = 0.1f; 1096 float pivotB = 0.4f; 1097 if (r < pivotA) { 1098 return 0; 1099 } else if (r > pivotB) { 1100 return 1.0f; 1101 } else { 1102 return (r - pivotA)/(pivotB - pivotA); 1103 } 1104 } 1105 1106 float overScrollBackgroundAlphaInterpolator(float r) { 1107 float threshold = 0.08f; 1108 1109 if (r > mOverScrollMaxBackgroundAlpha) { 1110 mOverScrollMaxBackgroundAlpha = r; 1111 } else if (r < mOverScrollMaxBackgroundAlpha) { 1112 r = mOverScrollMaxBackgroundAlpha; 1113 } 1114 1115 return Math.min(r / threshold, 1.0f); 1116 } 1117 1118 @Override 1119 protected void screenScrolled(int screenCenter) { 1120 super.screenScrolled(screenCenter); 1121 1122 // If the screen is not xlarge, then don't rotate the CellLayouts 1123 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1124 // see unshrink(). 1125 if (!LauncherApplication.isScreenLarge()) return; 1126 1127 final int halfScreenSize = getMeasuredWidth() / 2; 1128 1129 for (int i = 0; i < getChildCount(); i++) { 1130 CellLayout cl = (CellLayout) getChildAt(i); 1131 if (cl != null) { 1132 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1133 int delta = screenCenter - (getChildOffset(i) - 1134 getRelativeChildOffset(i) + halfScreenSize); 1135 1136 float scrollProgress = delta / (totalDistance * 1.0f); 1137 scrollProgress = Math.min(scrollProgress, 1.0f); 1138 scrollProgress = Math.max(scrollProgress, -1.0f); 1139 1140 // If the current page (i) is being overscrolled, we use a different 1141 // set of rules for setting the background alpha multiplier. 1142 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1143 i == getChildCount() -1 )) { 1144 cl.setBackgroundAlphaMultiplier( 1145 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1146 mOverScrollPageIndex = i; 1147 } else if (mOverScrollPageIndex != i) { 1148 cl.setBackgroundAlphaMultiplier( 1149 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1150 } 1151 1152 float rotation = WORKSPACE_ROTATION * scrollProgress; 1153 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1154 cl.setTranslationX(translationX); 1155 1156 cl.setRotationY(rotation); 1157 } 1158 } 1159 } 1160 1161 protected void onAttachedToWindow() { 1162 super.onAttachedToWindow(); 1163 mWindowToken = getWindowToken(); 1164 computeScroll(); 1165 mDragController.setWindowToken(mWindowToken); 1166 } 1167 1168 protected void onDetachedFromWindow() { 1169 mWindowToken = null; 1170 } 1171 1172 @Override 1173 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1174 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1175 mUpdateWallpaperOffsetImmediately = true; 1176 } 1177 super.onLayout(changed, left, top, right, bottom); 1178 1179 // if shrinkToBottom() is called on initialization, it has to be deferred 1180 // until after the first call to onLayout so that it has the correct width 1181 if (mSwitchStateAfterFirstLayout) { 1182 mSwitchStateAfterFirstLayout = false; 1183 // shrink can trigger a synchronous onLayout call, so we 1184 // post this to avoid a stack overflow / tangled onLayout calls 1185 post(new Runnable() { 1186 public void run() { 1187 shrink(mStateAfterFirstLayout, false); 1188 } 1189 }); 1190 } 1191 } 1192 1193 @Override 1194 protected void onDraw(Canvas canvas) { 1195 updateWallpaperOffsets(); 1196 1197 // Draw the background gradient if necessary 1198 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1199 int alpha = (int) (mBackgroundAlpha * 255); 1200 mBackground.setAlpha(alpha); 1201 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1202 getMeasuredHeight()); 1203 mBackground.draw(canvas); 1204 } 1205 1206 super.onDraw(canvas); 1207 } 1208 1209 @Override 1210 protected void dispatchDraw(Canvas canvas) { 1211 super.dispatchDraw(canvas); 1212 1213 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1214 final int width = getWidth(); 1215 final int height = getHeight(); 1216 final int pageHeight = getChildAt(0).getHeight(); 1217 1218 // This determines the height of the glowing edge: 90% of the page height 1219 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1220 1221 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1222 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1223 1224 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1225 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1226 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1227 d.draw(canvas); 1228 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1229 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1230 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1231 d.draw(canvas); 1232 } 1233 } 1234 } 1235 1236 @Override 1237 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1238 if (!mLauncher.isAllAppsVisible()) { 1239 final Folder openFolder = getOpenFolder(); 1240 if (openFolder != null) { 1241 return openFolder.requestFocus(direction, previouslyFocusedRect); 1242 } else { 1243 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1244 } 1245 } 1246 return false; 1247 } 1248 1249 @Override 1250 public int getDescendantFocusability() { 1251 if (isSmall()) { 1252 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1253 } 1254 return super.getDescendantFocusability(); 1255 } 1256 1257 @Override 1258 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1259 if (!mLauncher.isAllAppsVisible()) { 1260 final Folder openFolder = getOpenFolder(); 1261 if (openFolder != null) { 1262 openFolder.addFocusables(views, direction); 1263 } else { 1264 super.addFocusables(views, direction, focusableMode); 1265 } 1266 } 1267 } 1268 1269 public boolean isSmall() { 1270 return mState == State.SMALL || mState == State.SPRING_LOADED; 1271 } 1272 1273 void enableChildrenCache(int fromPage, int toPage) { 1274 if (fromPage > toPage) { 1275 final int temp = fromPage; 1276 fromPage = toPage; 1277 toPage = temp; 1278 } 1279 1280 final int screenCount = getChildCount(); 1281 1282 fromPage = Math.max(fromPage, 0); 1283 toPage = Math.min(toPage, screenCount - 1); 1284 1285 for (int i = fromPage; i <= toPage; i++) { 1286 final CellLayout layout = (CellLayout) getChildAt(i); 1287 layout.setChildrenDrawnWithCacheEnabled(true); 1288 layout.setChildrenDrawingCacheEnabled(true); 1289 } 1290 } 1291 1292 void clearChildrenCache() { 1293 final int screenCount = getChildCount(); 1294 for (int i = 0; i < screenCount; i++) { 1295 final CellLayout layout = (CellLayout) getChildAt(i); 1296 layout.setChildrenDrawnWithCacheEnabled(false); 1297 // In software mode, we don't want the items to continue to be drawn into bitmaps 1298 if (!isHardwareAccelerated()) { 1299 layout.setChildrenDrawingCacheEnabled(false); 1300 } 1301 } 1302 } 1303 1304 private void updateChildrenLayersEnabled() { 1305 boolean small = 1306 isSmall() || mIsSwitchingState || mState == State.SPRING_LOADED; 1307 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1308 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1309 1310 if (enableChildrenLayers != mChildrenLayersEnabled) { 1311 mChildrenLayersEnabled = enableChildrenLayers; 1312 for (int i = 0; i < getPageCount(); i++) { 1313 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1314 } 1315 } 1316 } 1317 1318 @Override 1319 protected void onWallpaperTap(MotionEvent ev) { 1320 final int[] position = mTempCell; 1321 getLocationOnScreen(position); 1322 1323 int pointerIndex = ev.getActionIndex(); 1324 position[0] += (int) ev.getX(pointerIndex); 1325 position[1] += (int) ev.getY(pointerIndex); 1326 1327 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1328 ev.getAction() == MotionEvent.ACTION_UP 1329 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1330 position[0], position[1], 0, null); 1331 } 1332 1333 private float getYScaleForScreen(int screen) { 1334 int x = Math.abs(screen - 2); 1335 1336 // TODO: This should be generalized for use with arbitrary rotation angles. 1337 switch(x) { 1338 case 0: return EXTRA_SCALE_FACTOR_0; 1339 case 1: return EXTRA_SCALE_FACTOR_1; 1340 case 2: return EXTRA_SCALE_FACTOR_2; 1341 } 1342 return 1.0f; 1343 } 1344 1345 public void shrink(State shrinkState) { 1346 shrink(shrinkState, true); 1347 } 1348 1349 // we use this to shrink the workspace for the all apps view and the customize view 1350 public void shrink(final State shrinkState, boolean animated) { 1351 if (mFirstLayout) { 1352 // (mFirstLayout == "first layout has not happened yet") 1353 // if we get a call to shrink() as part of our initialization (for example, if 1354 // Launcher is started in All Apps mode) then we need to wait for a layout call 1355 // to get our width so we can layout the mini-screen views correctly 1356 mSwitchStateAfterFirstLayout = true; 1357 mStateAfterFirstLayout = shrinkState; 1358 return; 1359 } 1360 1361 // Stop any scrolling, move to the current page right away 1362 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1363 1364 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1365 if (currentPage == null) { 1366 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1367 + " mNextPage " + mNextPage); 1368 return; 1369 } 1370 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1371 currentPage.setBackgroundAlpha(0.0f); 1372 } 1373 currentPage.setBackgroundAlphaMultiplier(1.0f); 1374 1375 mState = shrinkState; 1376 updateChildrenLayersEnabled(); 1377 1378 // we intercept and reject all touch events when we're small, so be sure to reset the state 1379 mTouchState = TOUCH_STATE_REST; 1380 mActivePointerId = INVALID_POINTER; 1381 1382 final Resources res = getResources(); 1383 final int screenWidth = getWidth(); 1384 final int screenHeight = getHeight(); 1385 1386 // How much the workspace shrinks when we enter all apps or customization mode 1387 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1388 1389 // Making the assumption that all pages have the same width as the 0th 1390 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1391 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1392 1393 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1394 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1395 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1396 1397 final int screenCount = getChildCount(); 1398 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1399 1400 // We shrink and disappear to nothing 1401 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1402 float y = screenHeight - scaledPageHeight - (isPortrait ? 1403 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1404 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1405 float finalAlpha = 0.0f; 1406 1407 int duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1408 1409 // We animate all the screens to the centered position in workspace 1410 // At the same time, the screens become greyed/dimmed 1411 1412 // newX is initialized to the left-most position of the centered screens 1413 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1414 1415 // We are going to scale about the center of the view, so we need to adjust the positions 1416 // of the views accordingly 1417 x -= (pageWidth - scaledPageWidth) / 2.0f; 1418 y -= (pageHeight - scaledPageHeight) / 2.0f; 1419 1420 if (mAnimator != null) { 1421 mAnimator.cancel(); 1422 } 1423 1424 mAnimator = new AnimatorSet(); 1425 // Workaround the AnimatorSet cancel bug... 1426 mUnshrinkAnimationEnabled = false; 1427 mShrinkAnimationEnabled = true; 1428 1429 initAnimationArrays(); 1430 1431 for (int i = 0; i < screenCount; i++) { 1432 final CellLayout cl = (CellLayout) getChildAt(i); 1433 1434 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1435 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1436 float rotationScaleY = getYScaleForScreen(i); 1437 1438 mOldAlphas[i] = cl.getAlpha(); 1439 mNewAlphas[i] = finalAlpha; 1440 if (animated && (mOldAlphas[i] != 0f || mNewAlphas[i] != 0f)) { 1441 // if the CellLayout will be visible during the animation, force building its 1442 // hardware layer immediately so we don't see a blip later in the animation 1443 cl.buildChildrenLayer(); 1444 } 1445 if (animated) { 1446 mOldTranslationXs[i] = cl.getX(); 1447 mOldTranslationYs[i] = cl.getY(); 1448 mOldScaleXs[i] = cl.getScaleX(); 1449 mOldScaleYs[i] = cl.getScaleY(); 1450 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1451 mOldRotationYs[i] = cl.getRotationY(); 1452 mNewTranslationXs[i] = x; 1453 mNewTranslationYs[i] = y; 1454 mNewScaleXs[i] = shrinkFactor * rotationScaleX; 1455 mNewScaleYs[i] = shrinkFactor * rotationScaleY; 1456 mNewBackgroundAlphas[i] = finalAlpha; 1457 mNewRotationYs[i] = rotation; 1458 } else { 1459 cl.setX((int)x); 1460 cl.setY((int)y); 1461 cl.setScaleX(shrinkFactor * rotationScaleX); 1462 cl.setScaleY(shrinkFactor * rotationScaleY); 1463 cl.setBackgroundAlpha(finalAlpha); 1464 cl.setFastAlpha(finalAlpha); 1465 cl.setRotationY(rotation); 1466 mShrinkAnimationListener.onAnimationEnd(null); 1467 } 1468 // increment newX for the next screen 1469 x += scaledPageWidth + extraScaledSpacing; 1470 } 1471 1472 float wallpaperOffset = 0.5f; 1473 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1474 int wallpaperTravelHeight = (int) (display.getHeight() * 1475 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1476 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1477 boolean isLandscape = display.getWidth() > display.getHeight(); 1478 1479 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1480 // to/from all apps 1481 final boolean enableWallpaperEffects = 1482 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1483 if (enableWallpaperEffects) { 1484 switch (shrinkState) { 1485 // animating in 1486 case SPRING_LOADED: 1487 wallpaperOffset = 0.5f; 1488 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1489 break; 1490 case SMALL: 1491 // allapps 1492 wallpaperOffset = 0.5f - offsetFromCenter; 1493 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1494 break; 1495 } 1496 } 1497 1498 setLayoutScale(1.0f); 1499 if (animated) { 1500 if (enableWallpaperEffects) { 1501 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1502 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1503 } 1504 1505 mSyncWallpaperOffsetWithScroll = false; 1506 1507 ValueAnimator animWithInterpolator = 1508 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1509 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1510 1511 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1512 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1513 final float newHorizontalWallpaperOffset = 0.5f; 1514 final float newVerticalWallpaperOffset = wallpaperOffset; 1515 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1516 public void onAnimationUpdate(float a, float b) { 1517 if (!mShrinkAnimationEnabled) return; 1518 mTransitionProgress = b; 1519 if (b == 0f) { 1520 // an optimization, and required for correct behavior. 1521 return; 1522 } 1523 invalidate(); 1524 if (enableWallpaperEffects) { 1525 setHorizontalWallpaperOffset( 1526 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1527 setVerticalWallpaperOffset( 1528 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1529 } 1530 for (int i = 0; i < screenCount; i++) { 1531 final CellLayout cl = (CellLayout) getChildAt(i); 1532 cl.fastInvalidate(); 1533 cl.setFastX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1534 cl.setFastY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1535 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1536 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1537 cl.setFastBackgroundAlpha( 1538 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1539 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1540 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1541 } 1542 } 1543 }); 1544 mAnimator.playTogether(animWithInterpolator); 1545 mAnimator.addListener(mShrinkAnimationListener); 1546 mAnimator.start(); 1547 } else if (enableWallpaperEffects) { 1548 setVerticalWallpaperOffset(wallpaperOffset); 1549 setHorizontalWallpaperOffset(0.5f); 1550 updateWallpaperOffsetImmediately(); 1551 } 1552 setChildrenDrawnWithCacheEnabled(true); 1553 1554 showBackgroundGradientForAllApps(animated); 1555 } 1556 1557 @Override 1558 protected void updateAdjacentPagesAlpha() { 1559 if (!isSmall()) { 1560 super.updateAdjacentPagesAlpha(); 1561 } 1562 } 1563 1564 /* 1565 * This interpolator emulates the rate at which the perceived scale of an object changes 1566 * as its distance from a camera increases. When this interpolator is applied to a scale 1567 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1568 * from the camera. 1569 */ 1570 static class ZInterpolator implements TimeInterpolator { 1571 private float focalLength; 1572 1573 public ZInterpolator(float foc) { 1574 focalLength = foc; 1575 } 1576 1577 public float getInterpolation(float input) { 1578 return (1.0f - focalLength / (focalLength + input)) / 1579 (1.0f - focalLength / (focalLength + 1.0f)); 1580 } 1581 } 1582 1583 /* 1584 * The exact reverse of ZInterpolator. 1585 */ 1586 static class InverseZInterpolator implements TimeInterpolator { 1587 private ZInterpolator zInterpolator; 1588 public InverseZInterpolator(float foc) { 1589 zInterpolator = new ZInterpolator(foc); 1590 } 1591 public float getInterpolation(float input) { 1592 return 1 - zInterpolator.getInterpolation(1 - input); 1593 } 1594 } 1595 1596 /* 1597 * ZInterpolator compounded with an ease-out. 1598 */ 1599 static class ZoomOutInterpolator implements TimeInterpolator { 1600 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1601 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1602 1603 public float getInterpolation(float input) { 1604 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1605 } 1606 } 1607 1608 /* 1609 * InvereZInterpolator compounded with an ease-out. 1610 */ 1611 static class ZoomInInterpolator implements TimeInterpolator { 1612 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1613 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1614 1615 public float getInterpolation(float input) { 1616 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1617 } 1618 } 1619 1620 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1621 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1622 1623 /* 1624 * 1625 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1626 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1627 * 1628 * These methods mark the appropriate pages as accepting drops (which alters their visual 1629 * appearance). 1630 * 1631 */ 1632 public void onDragStartedWithItem(View v) { 1633 final Canvas canvas = new Canvas(); 1634 1635 // We need to add extra padding to the bitmap to make room for the glow effect 1636 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1637 1638 // The outline is used to visualize where the item will land if dropped 1639 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1640 } 1641 1642 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1643 final Canvas canvas = new Canvas(); 1644 1645 // We need to add extra padding to the bitmap to make room for the glow effect 1646 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1647 1648 CellLayout cl = (CellLayout) getChildAt(0); 1649 1650 int[] size = cl.cellSpansToSize(spanX, spanY); 1651 1652 // The outline is used to visualize where the item will land if dropped 1653 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1654 } 1655 1656 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1657 // never dragged over 1658 public void onDragStopped(boolean success) { 1659 // In the success case, DragController has already called onDragExit() 1660 if (!success) { 1661 doDragExit(null); 1662 } 1663 } 1664 1665 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1666 public void unshrink(CellLayout clThatWasClicked) { 1667 unshrink(clThatWasClicked, false); 1668 } 1669 1670 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1671 int newCurrentPage = indexOfChild(clThatWasClicked); 1672 if (isSmall()) { 1673 if (springLoaded) { 1674 setLayoutScale(mSpringLoadedShrinkFactor); 1675 } 1676 scrollToNewPageWithoutMovingPages(newCurrentPage); 1677 unshrink(true, springLoaded); 1678 } 1679 } 1680 1681 1682 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1683 unshrink(clThatWasClicked, true); 1684 } 1685 1686 public void exitSpringLoadedDragMode(State shrinkState) { 1687 shrink(shrinkState); 1688 } 1689 1690 public void exitWidgetResizeMode() { 1691 DragLayer dragLayer = mLauncher.getDragLayer(); 1692 dragLayer.clearAllResizeFrames(); 1693 } 1694 1695 void unshrink(boolean animated) { 1696 unshrink(animated, false); 1697 } 1698 1699 private void initAnimationArrays() { 1700 final int childCount = getChildCount(); 1701 if (mOldTranslationXs != null) return; 1702 mOldTranslationXs = new float[childCount]; 1703 mOldTranslationYs = new float[childCount]; 1704 mOldScaleXs = new float[childCount]; 1705 mOldScaleYs = new float[childCount]; 1706 mOldBackgroundAlphas = new float[childCount]; 1707 mOldBackgroundAlphaMultipliers = new float[childCount]; 1708 mOldAlphas = new float[childCount]; 1709 mOldRotationYs = new float[childCount]; 1710 mNewTranslationXs = new float[childCount]; 1711 mNewTranslationYs = new float[childCount]; 1712 mNewScaleXs = new float[childCount]; 1713 mNewScaleYs = new float[childCount]; 1714 mNewBackgroundAlphas = new float[childCount]; 1715 mNewBackgroundAlphaMultipliers = new float[childCount]; 1716 mNewAlphas = new float[childCount]; 1717 mNewRotationYs = new float[childCount]; 1718 } 1719 1720 void unshrink(boolean animated, final boolean springLoaded) { 1721 if (mFirstLayout) { 1722 // (mFirstLayout == "first layout has not happened yet") 1723 // cancel any pending shrinks that were set earlier 1724 mSwitchStateAfterFirstLayout = false; 1725 mStateAfterFirstLayout = State.NORMAL; 1726 return; 1727 } 1728 1729 if (isSmall()) { 1730 float finalScaleFactor = 1.0f; 1731 float finalBackgroundAlpha = 0.0f; 1732 if (springLoaded) { 1733 finalScaleFactor = mSpringLoadedShrinkFactor; 1734 finalBackgroundAlpha = 1.0f; 1735 mState = State.SPRING_LOADED; 1736 } else { 1737 mState = State.NORMAL; 1738 } 1739 if (mAnimator != null) { 1740 mAnimator.cancel(); 1741 } 1742 1743 mAnimator = new AnimatorSet(); 1744 1745 // Workaround the AnimatorSet cancel bug... 1746 mShrinkAnimationEnabled = false; 1747 mUnshrinkAnimationEnabled = true; 1748 1749 final int screenCount = getChildCount(); 1750 initAnimationArrays(); 1751 1752 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1753 for (int i = 0; i < screenCount; i++) { 1754 final CellLayout cl = (CellLayout)getChildAt(i); 1755 float finalAlphaValue = 0f; 1756 float rotation = 0f; 1757 1758 // Set the final alpha depending on whether we are fading side pages. On phone ui, 1759 // we don't do any of the rotation, or the fading alpha in portrait. See the 1760 // ctor and screenScrolled(). 1761 if (mFadeInAdjacentScreens) { 1762 finalAlphaValue = (i == mCurrentPage) ? 1f : 0f; 1763 } else { 1764 finalAlphaValue = 1f; 1765 } 1766 1767 if (LauncherApplication.isScreenLarge()) { 1768 if (i < mCurrentPage) { 1769 rotation = WORKSPACE_ROTATION; 1770 } else if (i > mCurrentPage) { 1771 rotation = -WORKSPACE_ROTATION; 1772 } 1773 } 1774 float finalAlphaMultiplierValue = 1f; 1775 1776 float translation = 0f; 1777 1778 // If the screen is not xlarge, then don't rotate the CellLayouts 1779 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1780 // pages. see unshrink(). 1781 if (LauncherApplication.isScreenLarge()) { 1782 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1783 } 1784 1785 mOldAlphas[i] = cl.getAlpha(); 1786 mNewAlphas[i] = finalAlphaValue; 1787 if (animated) { 1788 mOldTranslationXs[i] = cl.getTranslationX(); 1789 mOldTranslationYs[i] = cl.getTranslationY(); 1790 mOldScaleXs[i] = cl.getScaleX(); 1791 mOldScaleYs[i] = cl.getScaleY(); 1792 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1793 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1794 mOldRotationYs[i] = cl.getRotationY(); 1795 1796 mNewTranslationXs[i] = translation; 1797 mNewTranslationYs[i] = 0f; 1798 mNewScaleXs[i] = finalScaleFactor; 1799 mNewScaleYs[i] = finalScaleFactor; 1800 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1801 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1802 mNewRotationYs[i] = rotation; 1803 } else { 1804 cl.setTranslationX(translation); 1805 cl.setTranslationY(0.0f); 1806 cl.setScaleX(finalScaleFactor); 1807 cl.setScaleY(finalScaleFactor); 1808 cl.setBackgroundAlpha(0.0f); 1809 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1810 cl.setAlpha(finalAlphaValue); 1811 cl.setRotationY(rotation); 1812 mUnshrinkAnimationListener.onAnimationEnd(null); 1813 } 1814 } 1815 1816 // Unshrink the hotset the same amount we are unshrinking the screens 1817 if (mLauncher.getHotseat() != null) { 1818 View hotseat = mLauncher.getHotseat().getLayout(); 1819 hotseat.setScaleX(finalScaleFactor); 1820 hotseat.setScaleY(finalScaleFactor); 1821 } 1822 1823 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1824 boolean isLandscape = display.getWidth() > display.getHeight(); 1825 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1826 // to/from all apps 1827 final boolean enableWallpaperEffects = 1828 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1829 if (enableWallpaperEffects) { 1830 switch (mState) { 1831 // animating out 1832 case SPRING_LOADED: 1833 if (animated) { 1834 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1835 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1836 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1837 } 1838 break; 1839 case SMALL: 1840 // all apps 1841 if (animated) { 1842 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1843 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1844 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1845 } 1846 break; 1847 } 1848 } 1849 if (animated) { 1850 ValueAnimator animWithInterpolator = 1851 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1852 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1853 1854 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 1855 getHorizontalWallpaperOffset() : 0; 1856 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 1857 getVerticalWallpaperOffset() : 0; 1858 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 1859 wallpaperOffsetForCurrentScroll() : 0; 1860 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 1861 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1862 public void onAnimationUpdate(float a, float b) { 1863 if (!mUnshrinkAnimationEnabled) return; 1864 mTransitionProgress = b; 1865 if (b == 0f) { 1866 // an optimization, but not required 1867 return; 1868 } 1869 invalidate(); 1870 if (enableWallpaperEffects) { 1871 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 1872 + b * newHorizontalWallpaperOffset); 1873 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 1874 + b * newVerticalWallpaperOffset); 1875 } 1876 for (int i = 0; i < screenCount; i++) { 1877 final CellLayout cl = (CellLayout) getChildAt(i); 1878 cl.fastInvalidate(); 1879 cl.setFastTranslationX( 1880 a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1881 cl.setFastTranslationY( 1882 a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1883 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1884 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1885 cl.setFastBackgroundAlpha( 1886 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1887 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1888 b * mNewBackgroundAlphaMultipliers[i]); 1889 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1890 } 1891 } 1892 }); 1893 1894 ValueAnimator rotationAnim = 1895 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1896 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1897 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1898 public void onAnimationUpdate(float a, float b) { 1899 if (!mUnshrinkAnimationEnabled) return; 1900 // don't invalidate workspace because we did it above 1901 if (b == 0f) { 1902 // an optimization, but not required 1903 return; 1904 } 1905 for (int i = 0; i < screenCount; i++) { 1906 final CellLayout cl = (CellLayout) getChildAt(i); 1907 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1908 } 1909 } 1910 }); 1911 1912 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1913 // If we call this when we're not animated, onAnimationEnd is never called on 1914 // the listener; make sure we only use the listener when we're actually animating 1915 mAnimator.addListener(mUnshrinkAnimationListener); 1916 mAnimator.start(); 1917 } else { 1918 if (enableWallpaperEffects) { 1919 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1920 setVerticalWallpaperOffset(0.5f); 1921 updateWallpaperOffsetImmediately(); 1922 } 1923 } 1924 } 1925 1926 hideBackgroundGradient(springLoaded ? getResources().getInteger( 1927 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f : 0f, animated); 1928 } 1929 1930 /** 1931 * Draw the View v into the given Canvas. 1932 * 1933 * @param v the view to draw 1934 * @param destCanvas the canvas to draw on 1935 * @param padding the horizontal and vertical padding to use when drawing 1936 */ 1937 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1938 final Rect clipRect = mTempRect; 1939 v.getDrawingRect(clipRect); 1940 1941 destCanvas.save(); 1942 if (v instanceof TextView && pruneToDrawable) { 1943 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1944 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1945 destCanvas.translate(padding / 2, padding / 2); 1946 d.draw(destCanvas); 1947 } else { 1948 if (v instanceof FolderIcon) { 1949 clipRect.bottom = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1950 } else if (v instanceof BubbleTextView) { 1951 final BubbleTextView tv = (BubbleTextView) v; 1952 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1953 tv.getLayout().getLineTop(0); 1954 } else if (v instanceof TextView) { 1955 final TextView tv = (TextView) v; 1956 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1957 tv.getLayout().getLineTop(0); 1958 } 1959 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1960 destCanvas.clipRect(clipRect, Op.REPLACE); 1961 v.draw(destCanvas); 1962 } 1963 destCanvas.restore(); 1964 } 1965 1966 /** 1967 * Returns a new bitmap to show when the given View is being dragged around. 1968 * Responsibility for the bitmap is transferred to the caller. 1969 */ 1970 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1971 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1972 Bitmap b; 1973 1974 if (v instanceof TextView) { 1975 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1976 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1977 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1978 } else { 1979 b = Bitmap.createBitmap( 1980 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1981 } 1982 1983 canvas.setBitmap(b); 1984 drawDragView(v, canvas, padding, true); 1985 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1986 1987 return b; 1988 } 1989 1990 /** 1991 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1992 * Responsibility for the bitmap is transferred to the caller. 1993 */ 1994 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1995 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1996 final Bitmap b = Bitmap.createBitmap( 1997 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1998 1999 canvas.setBitmap(b); 2000 drawDragView(v, canvas, padding, false); 2001 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2002 return b; 2003 } 2004 2005 /** 2006 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2007 * Responsibility for the bitmap is transferred to the caller. 2008 */ 2009 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2010 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2011 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2012 canvas.setBitmap(b); 2013 2014 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2015 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2016 (h - padding) / (float) orig.getHeight()); 2017 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2018 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2019 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2020 2021 // center the image 2022 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2023 2024 Paint p = new Paint(); 2025 p.setFilterBitmap(true); 2026 canvas.drawBitmap(orig, src, dst, p); 2027 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2028 2029 return b; 2030 } 2031 2032 /** 2033 * Creates a drag outline to represent a drop (that we don't have the actual information for 2034 * yet). May be changed in the future to alter the drop outline slightly depending on the 2035 * clip description mime data. 2036 */ 2037 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2038 Resources r = getResources(); 2039 final int outlineColor = r.getColor(R.color.drag_outline_color); 2040 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2041 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2042 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2043 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2044 final Bitmap b = Bitmap.createBitmap( 2045 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2046 2047 canvas.setBitmap(b); 2048 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2049 rectRadius, rectRadius, mExternalDragOutlinePaint); 2050 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2051 return b; 2052 } 2053 2054 void startDrag(CellLayout.CellInfo cellInfo) { 2055 View child = cellInfo.cell; 2056 2057 // Make sure the drag was started by a long press as opposed to a long click. 2058 if (!child.isInTouchMode()) { 2059 return; 2060 } 2061 2062 mDragInfo = cellInfo; 2063 child.setVisibility(GONE); 2064 2065 child.clearFocus(); 2066 child.setPressed(false); 2067 2068 final Canvas canvas = new Canvas(); 2069 2070 // We need to add extra padding to the bitmap to make room for the glow effect 2071 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2072 2073 // The outline is used to visualize where the item will land if dropped 2074 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2075 beginDragShared(child, this); 2076 } 2077 2078 public void beginDragShared(View child, DragSource source) { 2079 // We need to add extra padding to the bitmap to make room for the glow effect 2080 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2081 2082 // The drag bitmap follows the touch point around on the screen 2083 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 2084 2085 final int bmpWidth = b.getWidth(); 2086 2087 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2088 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2089 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 2090 2091 Rect dragRect = null; 2092 if (child instanceof BubbleTextView) { 2093 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2094 int top = child.getPaddingTop(); 2095 int left = (bmpWidth - iconSize) / 2; 2096 int right = left + iconSize; 2097 int bottom = top + iconSize; 2098 dragLayerY += top; 2099 dragRect = new Rect(left, top, right, bottom); 2100 } else if (child instanceof FolderIcon) { 2101 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 2102 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 2103 } 2104 2105 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2106 DragController.DRAG_ACTION_MOVE, dragRect); 2107 b.recycle(); 2108 } 2109 2110 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 2111 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 2112 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 2113 2114 final int[] cellXY = new int[2]; 2115 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2116 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2117 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 2118 cellXY[1]); 2119 } 2120 2121 public boolean transitionStateShouldAllowDrop() { 2122 return (!isSwitchingState() || mTransitionProgress > 0.5f); 2123 } 2124 2125 /** 2126 * {@inheritDoc} 2127 */ 2128 public boolean acceptDrop(DragObject d) { 2129 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2130 if (d.dragSource != this) { 2131 // Don't accept the drop if we're not over a screen at time of drop 2132 if (mDragTargetLayout == null) { 2133 return false; 2134 } 2135 if (!transitionStateShouldAllowDrop()) return false; 2136 2137 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2138 d.dragView, mDragViewVisualCenter); 2139 2140 int spanX = 1; 2141 int spanY = 1; 2142 View ignoreView = null; 2143 if (mDragInfo != null) { 2144 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2145 spanX = dragCellInfo.spanX; 2146 spanY = dragCellInfo.spanY; 2147 ignoreView = dragCellInfo.cell; 2148 } else { 2149 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2150 spanX = dragInfo.spanX; 2151 spanY = dragInfo.spanY; 2152 } 2153 2154 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2155 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2156 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2157 return true; 2158 } 2159 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2160 mTargetCell)) { 2161 return true; 2162 } 2163 2164 2165 // Don't accept the drop if there's no room for the item 2166 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2167 mLauncher.showOutOfSpaceMessage(); 2168 return false; 2169 } 2170 } 2171 return true; 2172 } 2173 2174 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2175 boolean considerTimeout) { 2176 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2177 2178 boolean hasntMoved = false; 2179 if (mDragInfo != null) { 2180 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2181 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2182 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2183 } 2184 2185 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2186 return false; 2187 } 2188 2189 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2190 boolean willBecomeShortcut = 2191 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2192 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2193 2194 return (aboveShortcut && willBecomeShortcut); 2195 } 2196 2197 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2198 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2199 if (dropOverView instanceof FolderIcon) { 2200 FolderIcon fi = (FolderIcon) dropOverView; 2201 if (fi.acceptDrop(dragInfo)) { 2202 return true; 2203 } 2204 } 2205 return false; 2206 } 2207 2208 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2209 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2210 View v = target.getChildAt(targetCell[0], targetCell[1]); 2211 boolean hasntMoved = false; 2212 if (mDragInfo != null) { 2213 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2214 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2215 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2216 } 2217 2218 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2219 mCreateUserFolderOnDrop = false; 2220 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2221 2222 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2223 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2224 2225 if (aboveShortcut && willBecomeShortcut) { 2226 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2227 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2228 // if the drag started here, we need to remove it from the workspace 2229 if (!external) { 2230 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2231 } 2232 2233 Rect folderLocation = new Rect(); 2234 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2235 target.removeView(v); 2236 2237 FolderIcon fi = 2238 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2239 destInfo.cellX = -1; 2240 destInfo.cellY = -1; 2241 sourceInfo.cellX = -1; 2242 sourceInfo.cellY = -1; 2243 2244 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2245 postAnimationRunnable); 2246 return true; 2247 } 2248 return false; 2249 } 2250 2251 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2252 DragObject d, boolean external) { 2253 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2254 if (dropOverView instanceof FolderIcon) { 2255 FolderIcon fi = (FolderIcon) dropOverView; 2256 if (fi.acceptDrop(d.dragInfo)) { 2257 fi.onDrop(d); 2258 2259 // if the drag started here, we need to remove it from the workspace 2260 if (!external) { 2261 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2262 } 2263 return true; 2264 } 2265 } 2266 return false; 2267 } 2268 2269 public void onDrop(DragObject d) { 2270 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2271 mDragViewVisualCenter); 2272 2273 // We want the point to be mapped to the dragTarget. 2274 if (mDragTargetLayout != null) { 2275 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2276 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2277 } else { 2278 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2279 } 2280 } 2281 2282 // When you are in customization mode and drag to a particular screen, make that the 2283 // new current/default screen, so any subsequent taps add items to that screen 2284 if (!mLauncher.isAllAppsVisible()) { 2285 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2286 if (dragTargetIndex > -1 && mCurrentPage != dragTargetIndex && 2287 (isSmall() || mIsSwitchingState)) { 2288 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2289 } 2290 } 2291 CellLayout dropTargetLayout = mDragTargetLayout; 2292 2293 int snapScreen = -1; 2294 if (d.dragSource != this) { 2295 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2296 (int) mDragViewVisualCenter[1] }; 2297 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2298 } else if (mDragInfo != null) { 2299 final View cell = mDragInfo.cell; 2300 2301 boolean continueDrop = true; 2302 if (mLauncher.isHotseatLayout(mDragTargetLayout) && d.dragInfo instanceof ItemInfo) { 2303 ItemInfo info = (ItemInfo) d.dragInfo; 2304 if (info.spanX > 1 || info.spanY > 1) { 2305 continueDrop = false; 2306 Toast.makeText(getContext(), R.string.invalid_hotseat_item, 2307 Toast.LENGTH_SHORT).show(); 2308 } 2309 } 2310 2311 if (continueDrop && dropTargetLayout != null) { 2312 // Move internally 2313 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2314 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2315 long container = hasMovedIntoHotseat ? 2316 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2317 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2318 int screen = (mTargetCell[0] < 0) ? 2319 mDragInfo.screen : indexOfChild(dropTargetLayout); 2320 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2321 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2322 // First we find the cell nearest to point at which the item is 2323 // dropped, without any consideration to whether there is an item there. 2324 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2325 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2326 // If the item being dropped is a shortcut and the nearest drop 2327 // cell also contains a shortcut, then create a folder with the two shortcuts. 2328 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2329 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2330 return; 2331 } 2332 2333 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2334 return; 2335 } 2336 2337 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2338 // we need to find the nearest cell location that is vacant 2339 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2340 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2341 dropTargetLayout, mTargetCell); 2342 2343 if (mInScrollArea && !hasMovedIntoHotseat && mState != State.SPRING_LOADED) { 2344 snapScreen = screen; 2345 snapToPage(screen); 2346 } 2347 2348 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2349 if (hasMovedLayouts) { 2350 // Reparent the view 2351 getParentCellLayoutForView(cell).removeView(cell); 2352 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2353 mDragInfo.spanX, mDragInfo.spanY); 2354 } 2355 2356 // update the item's position after drop 2357 final ItemInfo info = (ItemInfo) cell.getTag(); 2358 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2359 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2360 lp.cellX = mTargetCell[0]; 2361 lp.cellY = mTargetCell[1]; 2362 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2363 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2364 2365 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2366 cell instanceof LauncherAppWidgetHostView) { 2367 final CellLayout cellLayout = dropTargetLayout; 2368 // We post this call so that the widget has a chance to be placed 2369 // in its final location 2370 2371 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2372 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2373 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2374 final Runnable resizeRunnable = new Runnable() { 2375 public void run() { 2376 DragLayer dragLayer = mLauncher.getDragLayer(); 2377 dragLayer.addResizeFrame(info, hostView, cellLayout); 2378 } 2379 }; 2380 post(new Runnable() { 2381 public void run() { 2382 if (!isPageMoving()) { 2383 resizeRunnable.run(); 2384 } else { 2385 mDelayedResizeRunnable = resizeRunnable; 2386 } 2387 } 2388 }); 2389 } 2390 } 2391 2392 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2393 lp.cellY); 2394 } 2395 } 2396 2397 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2398 2399 // Prepare it to be animated into its new position 2400 // This must be called after the view has been re-parented 2401 final Runnable disableHardwareLayersRunnable = new Runnable() { 2402 @Override 2403 public void run() { 2404 mAnimatingViewIntoPlace = false; 2405 updateChildrenLayersEnabled(); 2406 } 2407 }; 2408 mAnimatingViewIntoPlace = true; 2409 if (d.dragView.hasDrawn()) { 2410 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2411 setFinalScrollForPageChange(snapScreen); 2412 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2413 disableHardwareLayersRunnable); 2414 resetFinalScrollForPageChange(snapScreen); 2415 } else { 2416 cell.setVisibility(VISIBLE); 2417 } 2418 parent.onDropChild(cell); 2419 } 2420 } 2421 2422 public void setFinalScrollForPageChange(int screen) { 2423 if (screen >= 0) { 2424 mSavedScrollX = getScrollX(); 2425 CellLayout cl = (CellLayout) getChildAt(screen); 2426 mSavedTranslationX = cl.getTranslationX(); 2427 mSavedRotationY = cl.getRotationY(); 2428 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2429 setScrollX(newX); 2430 cl.setTranslationX(0f); 2431 cl.setRotationY(0f); 2432 } 2433 } 2434 2435 public void resetFinalScrollForPageChange(int screen) { 2436 if (screen >= 0) { 2437 CellLayout cl = (CellLayout) getChildAt(screen); 2438 setScrollX(mSavedScrollX); 2439 cl.setTranslationX(mSavedTranslationX); 2440 cl.setRotationY(mSavedRotationY); 2441 } 2442 } 2443 2444 public void getViewLocationRelativeToSelf(View v, int[] location) { 2445 getLocationInWindow(location); 2446 int x = location[0]; 2447 int y = location[1]; 2448 2449 v.getLocationInWindow(location); 2450 int vX = location[0]; 2451 int vY = location[1]; 2452 2453 location[0] = vX - x; 2454 location[1] = vY - y; 2455 } 2456 2457 public void onDragEnter(DragObject d) { 2458 if (mDragTargetLayout != null) { 2459 mDragTargetLayout.setIsDragOverlapping(false); 2460 mDragTargetLayout.onDragExit(); 2461 } 2462 mDragTargetLayout = getCurrentDropLayout(); 2463 mDragTargetLayout.setIsDragOverlapping(true); 2464 mDragTargetLayout.onDragEnter(); 2465 2466 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2467 // don't need to show the outlines 2468 if (LauncherApplication.isScreenLarge()) { 2469 showOutlines(); 2470 } 2471 } 2472 2473 private void doDragExit(DragObject d) { 2474 // Clean up folders 2475 cleanupFolderCreation(d); 2476 2477 // Reset the scroll area and previous drag target 2478 onResetScrollArea(); 2479 2480 if (mDragTargetLayout != null) { 2481 mDragTargetLayout.setIsDragOverlapping(false); 2482 mDragTargetLayout.onDragExit(); 2483 } 2484 mLastDragOverView = null; 2485 2486 if (!mIsPageMoving) { 2487 hideOutlines(); 2488 } 2489 } 2490 2491 public void onDragExit(DragObject d) { 2492 doDragExit(d); 2493 } 2494 2495 public DropTarget getDropTargetDelegate(DragObject d) { 2496 return null; 2497 } 2498 2499 /** 2500 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2501 * in the returned structure related to the widgets that match the drop (or a null list if it is 2502 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2503 */ 2504 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2505 final LauncherModel model = mLauncher.getModel(); 2506 final ClipDescription desc = event.getClipDescription(); 2507 final int mimeTypeCount = desc.getMimeTypeCount(); 2508 for (int i = 0; i < mimeTypeCount; ++i) { 2509 final String mimeType = desc.getMimeType(i); 2510 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2511 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2512 } else { 2513 final List<WidgetMimeTypeHandlerData> widgets = 2514 model.resolveWidgetsForMimeType(mContext, mimeType); 2515 if (widgets.size() > 0) { 2516 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2517 } 2518 } 2519 } 2520 return null; 2521 } 2522 2523 /** 2524 * Global drag and drop handler 2525 */ 2526 @Override 2527 public boolean onDragEvent(DragEvent event) { 2528 final ClipDescription desc = event.getClipDescription(); 2529 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2530 final int[] pos = new int[2]; 2531 layout.getLocationOnScreen(pos); 2532 // We need to offset the drag coordinates to layout coordinate space 2533 final int x = (int) event.getX() - pos[0]; 2534 final int y = (int) event.getY() - pos[1]; 2535 2536 switch (event.getAction()) { 2537 case DragEvent.ACTION_DRAG_STARTED: { 2538 // Validate this drag 2539 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2540 if (test != null) { 2541 boolean isShortcut = (test.second == null); 2542 if (isShortcut) { 2543 // Check if we have enough space on this screen to add a new shortcut 2544 if (!layout.findCellForSpan(pos, 1, 1)) { 2545 mLauncher.showOutOfSpaceMessage(); 2546 return false; 2547 } 2548 } 2549 } else { 2550 // Show error message if we couldn't accept any of the items 2551 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2552 Toast.LENGTH_SHORT).show(); 2553 return false; 2554 } 2555 2556 // Create the drag outline 2557 // We need to add extra padding to the bitmap to make room for the glow effect 2558 final Canvas canvas = new Canvas(); 2559 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2560 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2561 2562 // Show the current page outlines to indicate that we can accept this drop 2563 showOutlines(); 2564 layout.setIsDragOccuring(true); 2565 layout.onDragEnter(); 2566 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2567 2568 return true; 2569 } 2570 case DragEvent.ACTION_DRAG_LOCATION: 2571 // Visualize the drop location 2572 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2573 return true; 2574 case DragEvent.ACTION_DROP: { 2575 // Try and add any shortcuts 2576 final LauncherModel model = mLauncher.getModel(); 2577 final ClipData data = event.getClipData(); 2578 2579 // We assume that the mime types are ordered in descending importance of 2580 // representation. So we enumerate the list of mime types and alert the 2581 // user if any widgets can handle the drop. Only the most preferred 2582 // representation will be handled. 2583 pos[0] = x; 2584 pos[1] = y; 2585 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2586 if (test != null) { 2587 final int index = test.first; 2588 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2589 final boolean isShortcut = (widgets == null); 2590 final String mimeType = desc.getMimeType(index); 2591 if (isShortcut) { 2592 final Intent intent = data.getItemAt(index).getIntent(); 2593 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2594 onDropExternal(new int[] { x, y }, info, layout, false); 2595 } else { 2596 if (widgets.size() == 1) { 2597 // If there is only one item, then go ahead and add and configure 2598 // that widget 2599 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2600 final PendingAddWidgetInfo createInfo = 2601 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2602 mLauncher.addAppWidgetFromDrop(createInfo, 2603 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2604 } else { 2605 // Show the widget picker dialog if there is more than one widget 2606 // that can handle this data type 2607 final InstallWidgetReceiver.WidgetListAdapter adapter = 2608 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2609 data, widgets, layout, mCurrentPage, pos); 2610 final AlertDialog.Builder builder = 2611 new AlertDialog.Builder(mContext); 2612 builder.setAdapter(adapter, adapter); 2613 builder.setCancelable(true); 2614 builder.setTitle(mContext.getString( 2615 R.string.external_drop_widget_pick_title)); 2616 builder.setIcon(R.drawable.ic_no_applications); 2617 builder.show(); 2618 } 2619 } 2620 } 2621 return true; 2622 } 2623 case DragEvent.ACTION_DRAG_ENDED: 2624 // Hide the page outlines after the drop 2625 layout.setIsDragOccuring(false); 2626 layout.onDragExit(); 2627 hideOutlines(); 2628 return true; 2629 } 2630 return super.onDragEvent(event); 2631 } 2632 2633 /* 2634 * 2635 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2636 * coordinate space. The argument xy is modified with the return result. 2637 * 2638 */ 2639 void mapPointFromSelfToChild(View v, float[] xy) { 2640 mapPointFromSelfToChild(v, xy, null); 2641 } 2642 2643 /* 2644 * 2645 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2646 * coordinate space. The argument xy is modified with the return result. 2647 * 2648 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2649 * computing it itself; we use this to avoid redundant matrix inversions in 2650 * findMatchingPageForDragOver 2651 * 2652 */ 2653 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2654 if (cachedInverseMatrix == null) { 2655 v.getMatrix().invert(mTempInverseMatrix); 2656 cachedInverseMatrix = mTempInverseMatrix; 2657 } 2658 xy[0] = xy[0] + mScrollX - v.getLeft(); 2659 xy[1] = xy[1] + mScrollY - v.getTop(); 2660 cachedInverseMatrix.mapPoints(xy); 2661 } 2662 2663 /* 2664 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2665 * covers the full screen) 2666 */ 2667 void mapPointFromSelfToSibling(View v, float[] xy) { 2668 xy[0] = xy[0] - v.getLeft(); 2669 xy[1] = xy[1] - v.getTop(); 2670 } 2671 2672 /* 2673 * 2674 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2675 * the parent View's coordinate space. The argument xy is modified with the return result. 2676 * 2677 */ 2678 void mapPointFromChildToSelf(View v, float[] xy) { 2679 v.getMatrix().mapPoints(xy); 2680 xy[0] -= (mScrollX - v.getLeft()); 2681 xy[1] -= (mScrollY - v.getTop()); 2682 } 2683 2684 static private float squaredDistance(float[] point1, float[] point2) { 2685 float distanceX = point1[0] - point2[0]; 2686 float distanceY = point2[1] - point2[1]; 2687 return distanceX * distanceX + distanceY * distanceY; 2688 } 2689 2690 /* 2691 * 2692 * Returns true if the passed CellLayout cl overlaps with dragView 2693 * 2694 */ 2695 boolean overlaps(CellLayout cl, DragView dragView, 2696 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2697 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2698 final float[] draggedItemTopLeft = mTempDragCoordinates; 2699 draggedItemTopLeft[0] = dragViewX; 2700 draggedItemTopLeft[1] = dragViewY; 2701 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2702 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2703 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2704 2705 // Transform the dragged item's top left coordinates 2706 // to the CellLayout's local coordinates 2707 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2708 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2709 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2710 2711 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2712 // Transform the dragged item's bottom right coordinates 2713 // to the CellLayout's local coordinates 2714 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2715 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2716 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2717 2718 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2719 float overlap = (overlapRegionRight - overlapRegionLeft) * 2720 (overlapRegionBottom - overlapRegionTop); 2721 if (overlap > 0) { 2722 return true; 2723 } 2724 } 2725 } 2726 return false; 2727 } 2728 2729 /* 2730 * 2731 * This method returns the CellLayout that is currently being dragged to. In order to drag 2732 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2733 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2734 * 2735 * Return null if no CellLayout is currently being dragged over 2736 * 2737 */ 2738 private CellLayout findMatchingPageForDragOver( 2739 DragView dragView, float originX, float originY, boolean exact) { 2740 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2741 // with the item being dragged and then choose the one that's closest to the touch point 2742 final int screenCount = getChildCount(); 2743 CellLayout bestMatchingScreen = null; 2744 float smallestDistSoFar = Float.MAX_VALUE; 2745 2746 for (int i = 0; i < screenCount; i++) { 2747 CellLayout cl = (CellLayout) getChildAt(i); 2748 2749 final float[] touchXy = {originX, originY}; 2750 // Transform the touch coordinates to the CellLayout's local coordinates 2751 // If the touch point is within the bounds of the cell layout, we can return immediately 2752 cl.getMatrix().invert(mTempInverseMatrix); 2753 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2754 2755 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2756 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2757 return cl; 2758 } 2759 2760 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2761 // Get the center of the cell layout in screen coordinates 2762 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2763 cellLayoutCenter[0] = cl.getWidth()/2; 2764 cellLayoutCenter[1] = cl.getHeight()/2; 2765 mapPointFromChildToSelf(cl, cellLayoutCenter); 2766 2767 touchXy[0] = originX; 2768 touchXy[1] = originY; 2769 2770 // Calculate the distance between the center of the CellLayout 2771 // and the touch point 2772 float dist = squaredDistance(touchXy, cellLayoutCenter); 2773 2774 if (dist < smallestDistSoFar) { 2775 smallestDistSoFar = dist; 2776 bestMatchingScreen = cl; 2777 } 2778 } 2779 } 2780 return bestMatchingScreen; 2781 } 2782 2783 // This is used to compute the visual center of the dragView. This point is then 2784 // used to visualize drop locations and determine where to drop an item. The idea is that 2785 // the visual center represents the user's interpretation of where the item is, and hence 2786 // is the appropriate point to use when determining drop location. 2787 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2788 DragView dragView, float[] recycle) { 2789 float res[]; 2790 if (recycle == null) { 2791 res = new float[2]; 2792 } else { 2793 res = recycle; 2794 } 2795 2796 // First off, the drag view has been shifted in a way that is not represented in the 2797 // x and y values or the x/yOffsets. Here we account for that shift. 2798 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2799 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2800 2801 // These represent the visual top and left of drag view if a dragRect was provided. 2802 // If a dragRect was not provided, then they correspond to the actual view left and 2803 // top, as the dragRect is in that case taken to be the entire dragView. 2804 // R.dimen.dragViewOffsetY. 2805 int left = x - xOffset; 2806 int top = y - yOffset; 2807 2808 // In order to find the visual center, we shift by half the dragRect 2809 res[0] = left + dragView.getDragRegion().width() / 2; 2810 res[1] = top + dragView.getDragRegion().height() / 2; 2811 2812 return res; 2813 } 2814 2815 public void onDragOver(DragObject d) { 2816 // Skip drag over events while we are dragging over side pages 2817 if (mInScrollArea) return; 2818 if (mIsSwitchingState) return; 2819 2820 Rect r = new Rect(); 2821 CellLayout layout = null; 2822 ItemInfo item = (ItemInfo) d.dragInfo; 2823 2824 // Ensure that we have proper spans for the item that we are dropping 2825 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2826 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2827 d.dragView, mDragViewVisualCenter); 2828 2829 // Identify whether we have dragged over a side page 2830 if (isSmall()) { 2831 if (mLauncher.getHotseat() != null) { 2832 mLauncher.getHotseat().getHitRect(r); 2833 if (r.contains(d.x, d.y)) { 2834 layout = mLauncher.getHotseat().getLayout(); 2835 } 2836 } 2837 if (layout == null) { 2838 layout = findMatchingPageForDragOver(d.dragView, mDragViewVisualCenter[0], 2839 mDragViewVisualCenter[1], true); 2840 } 2841 if (layout != mDragTargetLayout) { 2842 // Cancel all intermediate folder states 2843 cleanupFolderCreation(d); 2844 2845 if (mDragTargetLayout != null) { 2846 mDragTargetLayout.setIsDragOverlapping(false); 2847 mDragTargetLayout.onDragExit(); 2848 } 2849 mDragTargetLayout = layout; 2850 if (mDragTargetLayout != null) { 2851 mDragTargetLayout.setIsDragOverlapping(true); 2852 mDragTargetLayout.onDragEnter(); 2853 } else { 2854 mLastDragOverView = null; 2855 } 2856 2857 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2858 if (isInSpringLoadedMode) { 2859 if (mLauncher.isHotseatLayout(layout)) { 2860 mSpringLoadedDragController.cancel(); 2861 } else { 2862 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2863 } 2864 } 2865 } 2866 } else { 2867 // Test to see if we are over the hotseat otherwise just use the current page 2868 if (mLauncher.getHotseat() != null) { 2869 mLauncher.getHotseat().getHitRect(r); 2870 if (r.contains(d.x, d.y)) { 2871 layout = mLauncher.getHotseat().getLayout(); 2872 } 2873 } 2874 if (layout == null) { 2875 layout = getCurrentDropLayout(); 2876 } 2877 if (layout != mDragTargetLayout) { 2878 if (mDragTargetLayout != null) { 2879 mDragTargetLayout.setIsDragOverlapping(false); 2880 mDragTargetLayout.onDragExit(); 2881 } 2882 mDragTargetLayout = layout; 2883 mDragTargetLayout.setIsDragOverlapping(true); 2884 mDragTargetLayout.onDragEnter(); 2885 } 2886 } 2887 2888 // Handle the drag over 2889 if (mDragTargetLayout != null) { 2890 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2891 2892 // We want the point to be mapped to the dragTarget. 2893 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2894 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2895 } else { 2896 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2897 } 2898 ItemInfo info = (ItemInfo) d.dragInfo; 2899 2900 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2901 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2902 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2903 mTargetCell[1]); 2904 2905 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2906 mTargetCell, false); 2907 boolean isOverFolder = dragOverView instanceof FolderIcon; 2908 if (dragOverView != mLastDragOverView) { 2909 cancelFolderCreation(); 2910 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2911 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2912 } 2913 } 2914 2915 if (userFolderPending && dragOverView != mLastDragOverView) { 2916 mFolderCreationAlarm.setOnAlarmListener(new 2917 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2918 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2919 } 2920 2921 if (dragOverView != mLastDragOverView && isOverFolder) { 2922 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2923 if (mDragTargetLayout != null) { 2924 mDragTargetLayout.clearDragOutlines(); 2925 } 2926 } 2927 mLastDragOverView = dragOverView; 2928 2929 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2930 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2931 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2932 item.spanX, item.spanY); 2933 } 2934 } 2935 } 2936 2937 private void cleanupFolderCreation(DragObject d) { 2938 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2939 mDragFolderRingAnimator.animateToNaturalState(); 2940 } 2941 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2942 if (d != null) { 2943 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2944 } 2945 } 2946 mFolderCreationAlarm.cancelAlarm(); 2947 } 2948 2949 private void cancelFolderCreation() { 2950 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2951 mDragFolderRingAnimator.animateToNaturalState(); 2952 } 2953 mCreateUserFolderOnDrop = false; 2954 mFolderCreationAlarm.cancelAlarm(); 2955 } 2956 2957 class FolderCreationAlarmListener implements OnAlarmListener { 2958 CellLayout layout; 2959 int cellX; 2960 int cellY; 2961 2962 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2963 this.layout = layout; 2964 this.cellX = cellX; 2965 this.cellY = cellY; 2966 } 2967 2968 public void onAlarm(Alarm alarm) { 2969 if (mDragFolderRingAnimator == null) { 2970 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2971 } 2972 mDragFolderRingAnimator.setCell(cellX, cellY); 2973 mDragFolderRingAnimator.setCellLayout(layout); 2974 mDragFolderRingAnimator.animateToAcceptState(); 2975 layout.showFolderAccept(mDragFolderRingAnimator); 2976 layout.clearDragOutlines(); 2977 mCreateUserFolderOnDrop = true; 2978 } 2979 } 2980 2981 @Override 2982 public void getHitRect(Rect outRect) { 2983 // We want the workspace to have the whole area of the display (it will find the correct 2984 // cell layout to drop to in the existing drag/drop logic. 2985 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2986 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2987 } 2988 2989 /** 2990 * Add the item specified by dragInfo to the given layout. 2991 * @return true if successful 2992 */ 2993 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2994 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2995 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2996 return true; 2997 } 2998 mLauncher.showOutOfSpaceMessage(); 2999 return false; 3000 } 3001 3002 private void onDropExternal(int[] touchXY, Object dragInfo, 3003 CellLayout cellLayout, boolean insertAtFirst) { 3004 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3005 } 3006 3007 /** 3008 * Drop an item that didn't originate on one of the workspace screens. 3009 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3010 * come from another app altogether. 3011 * 3012 * NOTE: This can also be called when we are outside of a drag event, when we want 3013 * to add an item to one of the workspace screens. 3014 */ 3015 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3016 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3017 final Runnable exitSpringLoadedRunnable = new Runnable() { 3018 @Override 3019 public void run() { 3020 mLauncher.exitSpringLoadedDragModeDelayed(false); 3021 } 3022 }; 3023 3024 ItemInfo info = (ItemInfo) dragInfo; 3025 int spanX = info.spanX; 3026 int spanY = info.spanY; 3027 if (mDragInfo != null) { 3028 spanX = mDragInfo.spanX; 3029 spanY = mDragInfo.spanY; 3030 } 3031 3032 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3033 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3034 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3035 final int screen = indexOfChild(cellLayout); 3036 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3037 && mState != State.SPRING_LOADED) { 3038 snapToPage(screen); 3039 } 3040 3041 if (info instanceof PendingAddItemInfo) { 3042 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3043 3044 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 3045 cellLayout, mTargetCell); 3046 Runnable onAnimationCompleteRunnable = new Runnable() { 3047 @Override 3048 public void run() { 3049 // When dragging and dropping from customization tray, we deal with creating 3050 // widgets/shortcuts/folders in a slightly different way 3051 switch (pendingInfo.itemType) { 3052 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3053 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3054 container, screen, mTargetCell, null); 3055 break; 3056 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3057 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3058 container, screen, mTargetCell, null); 3059 break; 3060 default: 3061 throw new IllegalStateException("Unknown item type: " + 3062 pendingInfo.itemType); 3063 } 3064 cellLayout.onDragExit(); 3065 } 3066 }; 3067 3068 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3069 // location and size on the home screen. 3070 int loc[] = new int[2]; 3071 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 3072 3073 RectF r = new RectF(); 3074 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 3075 setFinalTransitionTransform(cellLayout); 3076 float cellLayoutScale = 3077 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 3078 resetTransitionTransform(cellLayout); 3079 3080 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 3081 // The animation will scale the dragView about its center, so we need to center about 3082 // the final location. 3083 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3084 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3085 3086 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 3087 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 3088 } else { 3089 // This is for other drag/drop cases, like dragging from All Apps 3090 View view = null; 3091 3092 switch (info.itemType) { 3093 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3094 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3095 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3096 // Came from all apps -- make a copy 3097 info = new ShortcutInfo((ApplicationInfo) info); 3098 } 3099 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3100 (ShortcutInfo) info); 3101 break; 3102 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3103 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3104 (FolderInfo) info, mIconCache); 3105 break; 3106 default: 3107 throw new IllegalStateException("Unknown item type: " + info.itemType); 3108 } 3109 3110 // First we find the cell nearest to point at which the item is 3111 // dropped, without any consideration to whether there is an item there. 3112 if (touchXY != null) { 3113 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3114 cellLayout, mTargetCell); 3115 d.postAnimationRunnable = exitSpringLoadedRunnable; 3116 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 3117 d.dragView, d.postAnimationRunnable)) { 3118 return; 3119 } 3120 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 3121 return; 3122 } 3123 } 3124 3125 if (touchXY != null) { 3126 // when dragging and dropping, just find the closest free spot 3127 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 3128 cellLayout, mTargetCell); 3129 } else { 3130 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3131 } 3132 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3133 info.spanY, insertAtFirst); 3134 cellLayout.onDropChild(view); 3135 cellLayout.animateDrop(); 3136 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3137 cellLayout.getChildrenLayout().measureChild(view); 3138 3139 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3140 lp.cellX, lp.cellY); 3141 3142 if (d.dragView != null) { 3143 // We wrap the animation call in the temporary set and reset of the current 3144 // cellLayout to its final transform -- this means we animate the drag view to 3145 // the correct final location. 3146 setFinalTransitionTransform(cellLayout); 3147 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3148 exitSpringLoadedRunnable); 3149 resetTransitionTransform(cellLayout); 3150 } 3151 } 3152 } 3153 3154 public void setFinalTransitionTransform(CellLayout layout) { 3155 if (isSwitchingState()) { 3156 int index = indexOfChild(layout); 3157 mCurrentScaleX = layout.getScaleX(); 3158 mCurrentScaleY = layout.getScaleY(); 3159 mCurrentTranslationX = layout.getTranslationX(); 3160 mCurrentTranslationY = layout.getTranslationY(); 3161 mCurrentRotationY = layout.getRotationY(); 3162 layout.setScaleX(mNewScaleXs[index]); 3163 layout.setScaleY(mNewScaleYs[index]); 3164 layout.setTranslationX(mNewTranslationXs[index]); 3165 layout.setTranslationY(mNewTranslationYs[index]); 3166 layout.setRotationY(mNewRotationYs[index]); 3167 } 3168 } 3169 public void resetTransitionTransform(CellLayout layout) { 3170 if (isSwitchingState()) { 3171 mCurrentScaleX = layout.getScaleX(); 3172 mCurrentScaleY = layout.getScaleY(); 3173 mCurrentTranslationX = layout.getTranslationX(); 3174 mCurrentTranslationY = layout.getTranslationY(); 3175 mCurrentRotationY = layout.getRotationY(); 3176 layout.setScaleX(mCurrentScaleX); 3177 layout.setScaleY(mCurrentScaleY); 3178 layout.setTranslationX(mCurrentTranslationX); 3179 layout.setTranslationY(mCurrentTranslationY); 3180 layout.setRotationY(mCurrentRotationY); 3181 } 3182 } 3183 3184 /** 3185 * Return the current {@link CellLayout}, correctly picking the destination 3186 * screen while a scroll is in progress. 3187 */ 3188 public CellLayout getCurrentDropLayout() { 3189 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3190 } 3191 3192 /** 3193 * Return the current CellInfo describing our current drag; this method exists 3194 * so that Launcher can sync this object with the correct info when the activity is created/ 3195 * destroyed 3196 * 3197 */ 3198 public CellLayout.CellInfo getDragInfo() { 3199 return mDragInfo; 3200 } 3201 3202 /** 3203 * Calculate the nearest cell where the given object would be dropped. 3204 * 3205 * pixelX and pixelY should be in the coordinate system of layout 3206 */ 3207 private int[] findNearestVacantArea(int pixelX, int pixelY, 3208 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3209 return layout.findNearestVacantArea( 3210 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3211 } 3212 3213 /** 3214 * Calculate the nearest cell where the given object would be dropped. 3215 * 3216 * pixelX and pixelY should be in the coordinate system of layout 3217 */ 3218 private int[] findNearestArea(int pixelX, int pixelY, 3219 int spanX, int spanY, CellLayout layout, int[] recycle) { 3220 return layout.findNearestArea( 3221 pixelX, pixelY, spanX, spanY, recycle); 3222 } 3223 3224 void setup(Launcher launcher, DragController dragController) { 3225 mLauncher = launcher; 3226 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3227 mDragController = dragController; 3228 3229 // hardware layers on children are enabled on startup, but should be disabled until 3230 // needed 3231 updateChildrenLayersEnabled(); 3232 setWallpaperDimension(); 3233 } 3234 3235 /** 3236 * Called at the end of a drag which originated on the workspace. 3237 */ 3238 public void onDropCompleted(View target, DragObject d, boolean success) { 3239 if (success) { 3240 if (target != this) { 3241 if (mDragInfo != null) { 3242 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3243 if (mDragInfo.cell instanceof DropTarget) { 3244 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3245 } 3246 } 3247 } 3248 } else if (mDragInfo != null) { 3249 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3250 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3251 // moved into DragController.cancelDrag(). 3252 doDragExit(null); 3253 CellLayout cellLayout; 3254 if (mLauncher.isHotseatLayout(target)) { 3255 cellLayout = mLauncher.getHotseat().getLayout(); 3256 } else { 3257 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3258 } 3259 cellLayout.onDropChild(mDragInfo.cell); 3260 } 3261 mDragOutline = null; 3262 mDragInfo = null; 3263 } 3264 3265 public boolean isDropEnabled() { 3266 return true; 3267 } 3268 3269 @Override 3270 protected void onRestoreInstanceState(Parcelable state) { 3271 super.onRestoreInstanceState(state); 3272 Launcher.setScreen(mCurrentPage); 3273 } 3274 3275 @Override 3276 public void scrollLeft() { 3277 if (!isSmall() && !mIsSwitchingState) { 3278 super.scrollLeft(); 3279 } 3280 Folder openFolder = getOpenFolder(); 3281 if (openFolder != null) { 3282 openFolder.completeDragExit(); 3283 } 3284 } 3285 3286 @Override 3287 public void scrollRight() { 3288 if (!isSmall() && !mIsSwitchingState) { 3289 super.scrollRight(); 3290 } 3291 Folder openFolder = getOpenFolder(); 3292 if (openFolder != null) { 3293 openFolder.completeDragExit(); 3294 } 3295 } 3296 3297 @Override 3298 public void onEnterScrollArea(int x, int y, int direction) { 3299 // Ignore the scroll area if we are dragging over the hot seat 3300 if (mLauncher.getHotseat() != null) { 3301 Rect r = new Rect(); 3302 mLauncher.getHotseat().getHitRect(r); 3303 if (r.contains(x, y)) { 3304 return; 3305 } 3306 } 3307 3308 if (!isSmall() && !mIsSwitchingState) { 3309 mInScrollArea = true; 3310 3311 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3312 final CellLayout layout = (CellLayout) getChildAt(page); 3313 cancelFolderCreation(); 3314 3315 if (layout != null) { 3316 // Exit the current layout and mark the overlapping layout 3317 if (mDragTargetLayout != null) { 3318 mDragTargetLayout.setIsDragOverlapping(false); 3319 mDragTargetLayout.onDragExit(); 3320 } 3321 mDragTargetLayout = layout; 3322 mDragTargetLayout.setIsDragOverlapping(true); 3323 3324 // Workspace is responsible for drawing the edge glow on adjacent pages, 3325 // so we need to redraw the workspace when this may have changed. 3326 invalidate(); 3327 } 3328 } 3329 } 3330 3331 @Override 3332 public void onExitScrollArea() { 3333 if (mInScrollArea) { 3334 if (mDragTargetLayout != null) { 3335 // Unmark the overlapping layout and re-enter the current layout 3336 mDragTargetLayout.setIsDragOverlapping(false); 3337 mDragTargetLayout = getCurrentDropLayout(); 3338 mDragTargetLayout.onDragEnter(); 3339 3340 // Workspace is responsible for drawing the edge glow on adjacent pages, 3341 // so we need to redraw the workspace when this may have changed. 3342 invalidate(); 3343 } 3344 mInScrollArea = false; 3345 } 3346 } 3347 3348 private void onResetScrollArea() { 3349 if (mDragTargetLayout != null) { 3350 // Unmark the overlapping layout 3351 mDragTargetLayout.setIsDragOverlapping(false); 3352 3353 // Workspace is responsible for drawing the edge glow on adjacent pages, 3354 // so we need to redraw the workspace when this may have changed. 3355 invalidate(); 3356 } 3357 mInScrollArea = false; 3358 } 3359 3360 /** 3361 * Returns a specific CellLayout 3362 */ 3363 CellLayout getParentCellLayoutForView(View v) { 3364 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3365 for (CellLayout layout : layouts) { 3366 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3367 return layout; 3368 } 3369 } 3370 return null; 3371 } 3372 3373 /** 3374 * Returns a list of all the CellLayouts in the workspace. 3375 */ 3376 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3377 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3378 int screenCount = getChildCount(); 3379 for (int screen = 0; screen < screenCount; screen++) { 3380 layouts.add(((CellLayout) getChildAt(screen))); 3381 } 3382 if (mLauncher.getHotseat() != null) { 3383 layouts.add(mLauncher.getHotseat().getLayout()); 3384 } 3385 return layouts; 3386 } 3387 3388 /** 3389 * We should only use this to search for specific children. Do not use this method to modify 3390 * CellLayoutChildren directly. 3391 */ 3392 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3393 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3394 int screenCount = getChildCount(); 3395 for (int screen = 0; screen < screenCount; screen++) { 3396 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3397 } 3398 if (mLauncher.getHotseat() != null) { 3399 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3400 } 3401 return childrenLayouts; 3402 } 3403 3404 public Folder getFolderForTag(Object tag) { 3405 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3406 for (CellLayoutChildren layout: childrenLayouts) { 3407 int count = layout.getChildCount(); 3408 for (int i = 0; i < count; i++) { 3409 View child = layout.getChildAt(i); 3410 if (child instanceof Folder) { 3411 Folder f = (Folder) child; 3412 if (f.getInfo() == tag && f.getInfo().opened) { 3413 return f; 3414 } 3415 } 3416 } 3417 } 3418 return null; 3419 } 3420 3421 public View getViewForTag(Object tag) { 3422 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3423 for (CellLayoutChildren layout: childrenLayouts) { 3424 int count = layout.getChildCount(); 3425 for (int i = 0; i < count; i++) { 3426 View child = layout.getChildAt(i); 3427 if (child.getTag() == tag) { 3428 return child; 3429 } 3430 } 3431 } 3432 return null; 3433 } 3434 3435 void clearDropTargets() { 3436 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3437 for (CellLayoutChildren layout: childrenLayouts) { 3438 int childCount = layout.getChildCount(); 3439 for (int j = 0; j < childCount; j++) { 3440 View v = layout.getChildAt(j); 3441 if (v instanceof DropTarget) { 3442 mDragController.removeDropTarget((DropTarget) v); 3443 } 3444 } 3445 } 3446 } 3447 3448 void removeItems(final ArrayList<ApplicationInfo> apps) { 3449 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3450 3451 final HashSet<String> packageNames = new HashSet<String>(); 3452 final int appCount = apps.size(); 3453 for (int i = 0; i < appCount; i++) { 3454 packageNames.add(apps.get(i).componentName.getPackageName()); 3455 } 3456 3457 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3458 for (final CellLayout layoutParent: cellLayouts) { 3459 final ViewGroup layout = layoutParent.getChildrenLayout(); 3460 3461 // Avoid ANRs by treating each screen separately 3462 post(new Runnable() { 3463 public void run() { 3464 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3465 childrenToRemove.clear(); 3466 3467 int childCount = layout.getChildCount(); 3468 for (int j = 0; j < childCount; j++) { 3469 final View view = layout.getChildAt(j); 3470 Object tag = view.getTag(); 3471 3472 if (tag instanceof ShortcutInfo) { 3473 final ShortcutInfo info = (ShortcutInfo) tag; 3474 final Intent intent = info.intent; 3475 final ComponentName name = intent.getComponent(); 3476 3477 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3478 for (String packageName: packageNames) { 3479 if (packageName.equals(name.getPackageName())) { 3480 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3481 childrenToRemove.add(view); 3482 } 3483 } 3484 } 3485 } else if (tag instanceof FolderInfo) { 3486 final FolderInfo info = (FolderInfo) tag; 3487 final ArrayList<ShortcutInfo> contents = info.contents; 3488 final int contentsCount = contents.size(); 3489 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3490 new ArrayList<ShortcutInfo>(); 3491 3492 for (int k = 0; k < contentsCount; k++) { 3493 final ShortcutInfo appInfo = contents.get(k); 3494 final Intent intent = appInfo.intent; 3495 final ComponentName name = intent.getComponent(); 3496 3497 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3498 for (String packageName: packageNames) { 3499 if (packageName.equals(name.getPackageName())) { 3500 appsToRemoveFromFolder.add(appInfo); 3501 } 3502 } 3503 } 3504 } 3505 for (ShortcutInfo item: appsToRemoveFromFolder) { 3506 info.remove(item); 3507 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3508 } 3509 } else if (tag instanceof LauncherAppWidgetInfo) { 3510 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3511 final AppWidgetProviderInfo provider = 3512 widgets.getAppWidgetInfo(info.appWidgetId); 3513 if (provider != null) { 3514 for (String packageName: packageNames) { 3515 if (packageName.equals(provider.provider.getPackageName())) { 3516 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3517 childrenToRemove.add(view); 3518 } 3519 } 3520 } 3521 } 3522 } 3523 3524 childCount = childrenToRemove.size(); 3525 for (int j = 0; j < childCount; j++) { 3526 View child = childrenToRemove.get(j); 3527 // Note: We can not remove the view directly from CellLayoutChildren as this 3528 // does not re-mark the spaces as unoccupied. 3529 layoutParent.removeViewInLayout(child); 3530 if (child instanceof DropTarget) { 3531 mDragController.removeDropTarget((DropTarget)child); 3532 } 3533 } 3534 3535 if (childCount > 0) { 3536 layout.requestLayout(); 3537 layout.invalidate(); 3538 } 3539 } 3540 }); 3541 } 3542 } 3543 3544 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3545 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3546 for (CellLayoutChildren layout: childrenLayouts) { 3547 int childCount = layout.getChildCount(); 3548 for (int j = 0; j < childCount; j++) { 3549 final View view = layout.getChildAt(j); 3550 Object tag = view.getTag(); 3551 if (tag instanceof ShortcutInfo) { 3552 ShortcutInfo info = (ShortcutInfo)tag; 3553 // We need to check for ACTION_MAIN otherwise getComponent() might 3554 // return null for some shortcuts (for instance, for shortcuts to 3555 // web pages.) 3556 final Intent intent = info.intent; 3557 final ComponentName name = intent.getComponent(); 3558 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3559 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3560 final int appCount = apps.size(); 3561 for (int k = 0; k < appCount; k++) { 3562 ApplicationInfo app = apps.get(k); 3563 if (app.componentName.equals(name)) { 3564 info.setIcon(mIconCache.getIcon(info.intent)); 3565 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3566 new FastBitmapDrawable(info.getIcon(mIconCache)), 3567 null, null); 3568 } 3569 } 3570 } 3571 } 3572 } 3573 } 3574 } 3575 3576 void moveToDefaultScreen(boolean animate) { 3577 if (!isSmall()) { 3578 if (animate) { 3579 snapToPage(mDefaultPage); 3580 } else { 3581 setCurrentPage(mDefaultPage); 3582 } 3583 } 3584 getChildAt(mDefaultPage).requestFocus(); 3585 } 3586 3587 @Override 3588 public void syncPages() { 3589 } 3590 3591 @Override 3592 public void syncPageItems(int page) { 3593 } 3594 3595 @Override 3596 protected String getCurrentPageDescription() { 3597 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3598 return String.format(mContext.getString(R.string.workspace_scroll_format), 3599 page + 1, getChildCount()); 3600 } 3601 3602 public void getLocationInDragLayer(int[] loc) { 3603 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3604 } 3605 3606 /** 3607 * Return true because we want the scrolling indicator to stretch to fit the space. 3608 */ 3609 protected boolean hasElasticScrollIndicator() { 3610 return true; 3611 } 3612 3613 void showDockDivider(boolean immediately) { 3614 final ViewGroup parent = (ViewGroup) getParent(); 3615 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3616 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3617 if (qsbDivider != null && dockDivider != null) { 3618 qsbDivider.setVisibility(View.VISIBLE); 3619 dockDivider.setVisibility(View.VISIBLE); 3620 if (mDividerAnimator != null) { 3621 mDividerAnimator.cancel(); 3622 mDividerAnimator = null; 3623 } 3624 if (immediately) { 3625 qsbDivider.setAlpha(1f); 3626 dockDivider.setAlpha(1f); 3627 } else { 3628 mDividerAnimator = new AnimatorSet(); 3629 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3630 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3631 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3632 mDividerAnimator.start(); 3633 } 3634 } 3635 } 3636 3637 void hideDockDivider(boolean immediately) { 3638 final ViewGroup parent = (ViewGroup) getParent(); 3639 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3640 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3641 if (qsbDivider != null && dockDivider != null) { 3642 if (mDividerAnimator != null) { 3643 mDividerAnimator.cancel(); 3644 mDividerAnimator = null; 3645 } 3646 if (immediately) { 3647 qsbDivider.setVisibility(View.GONE); 3648 dockDivider.setVisibility(View.GONE); 3649 qsbDivider.setAlpha(0f); 3650 dockDivider.setAlpha(0f); 3651 } else { 3652 mDividerAnimator = new AnimatorSet(); 3653 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3654 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3655 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3656 private boolean cancelled = false; 3657 @Override 3658 public void onAnimationCancel(android.animation.Animator animation) { 3659 cancelled = true; 3660 } 3661 @Override 3662 public void onAnimationEnd(android.animation.Animator animation) { 3663 if (!cancelled) { 3664 qsbDivider.setVisibility(View.GONE); 3665 dockDivider.setVisibility(View.GONE); 3666 } 3667 } 3668 }); 3669 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3670 mDividerAnimator.start(); 3671 } 3672 } 3673 } 3674} 3675