Workspace.java revision 446e940fc8839173de12f1299b8c24f318d53a3f
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.res.Resources; 37import android.content.res.TypedArray; 38import android.graphics.Bitmap; 39import android.graphics.Camera; 40import android.graphics.Canvas; 41import android.graphics.Matrix; 42import android.graphics.Paint; 43import android.graphics.PorterDuff; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewGroup; 59import android.view.animation.DecelerateInterpolator; 60import android.widget.ImageView; 61import android.widget.TextView; 62import android.widget.Toast; 63 64import com.android.launcher.R; 65import com.android.launcher2.FolderIcon.FolderRingAnimator; 66import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 67 68import java.util.ArrayList; 69import java.util.HashSet; 70import java.util.List; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 79 DragController.DragListener { 80 @SuppressWarnings({"UnusedDeclaration"}) 81 private static final String TAG = "Launcher.Workspace"; 82 83 // Y rotation to apply to the workspace screens 84 private static final float WORKSPACE_ROTATION = 12.5f; 85 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 86 private static float CAMERA_DISTANCE = 6500; 87 88 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 89 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 90 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 91 92 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 93 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 94 95 // These animators are used to fade the children's outlines 96 private ObjectAnimator mChildrenOutlineFadeInAnimation; 97 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 98 private float mChildrenOutlineAlpha = 0; 99 100 // These properties refer to the background protection gradient used for AllApps and Customize 101 private ValueAnimator mBackgroundFadeInAnimation; 102 private ValueAnimator mBackgroundFadeOutAnimation; 103 private Drawable mBackground; 104 boolean mDrawBackground = true; 105 private float mBackgroundAlpha = 0; 106 private float mOverScrollMaxBackgroundAlpha = 0.0f; 107 private int mOverScrollPageIndex = -1; 108 private AnimatorSet mDividerAnimator; 109 110 private float mWallpaperScrollRatio = 1.0f; 111 112 private final WallpaperManager mWallpaperManager; 113 private IBinder mWindowToken; 114 115 private int mDefaultPage; 116 117 /** 118 * CellInfo for the cell that is currently being dragged 119 */ 120 private CellLayout.CellInfo mDragInfo; 121 122 /** 123 * Target drop area calculated during last acceptDrop call. 124 */ 125 private int[] mTargetCell = new int[2]; 126 127 /** 128 * The CellLayout that is currently being dragged over 129 */ 130 private CellLayout mDragTargetLayout = null; 131 132 private Launcher mLauncher; 133 private IconCache mIconCache; 134 private DragController mDragController; 135 136 // These are temporary variables to prevent having to allocate a new object just to 137 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 138 private int[] mTempCell = new int[2]; 139 private int[] mTempEstimate = new int[2]; 140 private float[] mDragViewVisualCenter = new float[2]; 141 private float[] mTempDragCoordinates = new float[2]; 142 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 143 private float[] mTempDragBottomRightCoordinates = new float[2]; 144 private Matrix mTempInverseMatrix = new Matrix(); 145 146 private SpringLoadedDragController mSpringLoadedDragController; 147 private float mSpringLoadedShrinkFactor; 148 149 private static final int DEFAULT_CELL_COUNT_X = 4; 150 private static final int DEFAULT_CELL_COUNT_Y = 4; 151 152 // State variable that indicates whether the pages are small (ie when you're 153 // in all apps or customize mode) 154 155 enum State { NORMAL, SPRING_LOADED, SMALL }; 156 private State mState = State.NORMAL; 157 private boolean mIsSwitchingState = false; 158 private boolean mSwitchStateAfterFirstLayout = false; 159 private State mStateAfterFirstLayout; 160 161 private AnimatorSet mAnimator; 162 private AnimatorListener mChangeStateAnimationListener; 163 164 boolean mAnimatingViewIntoPlace = false; 165 boolean mIsDragOccuring = false; 166 boolean mChildrenLayersEnabled = true; 167 168 /** Is the user is dragging an item near the edge of a page? */ 169 private boolean mInScrollArea = false; 170 171 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 172 private Bitmap mDragOutline = null; 173 private final Rect mTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 private int mDragViewMultiplyColor; 176 177 // Paint used to draw external drop outline 178 private final Paint mExternalDragOutlinePaint = new Paint(); 179 180 // Camera and Matrix used to determine the final position of a neighboring CellLayout 181 private final Matrix mMatrix = new Matrix(); 182 private final Camera mCamera = new Camera(); 183 private final float mTempFloat2[] = new float[2]; 184 185 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 186 int mWallpaperWidth; 187 int mWallpaperHeight; 188 WallpaperOffsetInterpolator mWallpaperOffset; 189 boolean mUpdateWallpaperOffsetImmediately = false; 190 private Runnable mDelayedResizeRunnable; 191 private int mDisplayWidth; 192 private int mDisplayHeight; 193 private boolean mIsStaticWallpaper; 194 private int mWallpaperTravelWidth; 195 196 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 197 private static final int FOLDER_CREATION_TIMEOUT = 250; 198 private final Alarm mFolderCreationAlarm = new Alarm(); 199 private FolderRingAnimator mDragFolderRingAnimator = null; 200 private View mLastDragOverView = null; 201 private boolean mCreateUserFolderOnDrop = false; 202 203 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 204 private float mXDown; 205 private float mYDown; 206 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 207 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 208 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 209 210 // These variables are used for storing the initial and final values during workspace animations 211 private int mSavedScrollX; 212 private float mSavedRotationY; 213 private float mSavedTranslationX; 214 private float mCurrentScaleX; 215 private float mCurrentScaleY; 216 private float mCurrentRotationY; 217 private float mCurrentTranslationX; 218 private float mCurrentTranslationY; 219 private float[] mOldTranslationXs; 220 private float[] mOldTranslationYs; 221 private float[] mOldScaleXs; 222 private float[] mOldScaleYs; 223 private float[] mOldBackgroundAlphas; 224 private float[] mOldBackgroundAlphaMultipliers; 225 private float[] mOldAlphas; 226 private float[] mOldRotationYs; 227 private float[] mNewTranslationXs; 228 private float[] mNewTranslationYs; 229 private float[] mNewScaleXs; 230 private float[] mNewScaleYs; 231 private float[] mNewBackgroundAlphas; 232 private float[] mNewBackgroundAlphaMultipliers; 233 private float[] mNewAlphas; 234 private float[] mNewRotationYs; 235 private float mTransitionProgress; 236 237 /** 238 * Used to inflate the Workspace from XML. 239 * 240 * @param context The application's context. 241 * @param attrs The attributes set containing the Workspace's customization values. 242 */ 243 public Workspace(Context context, AttributeSet attrs) { 244 this(context, attrs, 0); 245 } 246 247 /** 248 * Used to inflate the Workspace from XML. 249 * 250 * @param context The application's context. 251 * @param attrs The attributes set containing the Workspace's customization values. 252 * @param defStyle Unused. 253 */ 254 public Workspace(Context context, AttributeSet attrs, int defStyle) { 255 super(context, attrs, defStyle); 256 mContentIsRefreshable = false; 257 258 // With workspace, data is available straight from the get-go 259 setDataIsReady(); 260 261 mFadeInAdjacentScreens = 262 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 263 mWallpaperManager = WallpaperManager.getInstance(context); 264 265 int cellCountX = DEFAULT_CELL_COUNT_X; 266 int cellCountY = DEFAULT_CELL_COUNT_Y; 267 268 TypedArray a = context.obtainStyledAttributes(attrs, 269 R.styleable.Workspace, defStyle, 0); 270 271 final Resources res = context.getResources(); 272 if (LauncherApplication.isScreenLarge()) { 273 // Determine number of rows/columns dynamically 274 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 275 // Around that ratio we should make cells the same size in portrait and 276 // landscape 277 TypedArray actionBarSizeTypedArray = 278 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 279 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 280 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 281 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 282 283 cellCountX = 1; 284 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 285 cellCountX++; 286 } 287 288 cellCountY = 1; 289 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 290 <= smallestScreenDim - systemBarHeight) { 291 cellCountY++; 292 } 293 } 294 295 mSpringLoadedShrinkFactor = 296 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 297 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 298 299 // if the value is manually specified, use that instead 300 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 301 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 302 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 303 a.recycle(); 304 305 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 306 setHapticFeedbackEnabled(false); 307 308 mLauncher = (Launcher) context; 309 initWorkspace(); 310 311 // Disable multitouch across the workspace/all apps/customize tray 312 setMotionEventSplittingEnabled(true); 313 } 314 315 public void onDragStart(DragSource source, Object info, int dragAction) { 316 mIsDragOccuring = true; 317 updateChildrenLayersEnabled(); 318 mLauncher.lockScreenOrientationOnLargeUI(); 319 } 320 321 public void onDragEnd() { 322 mIsDragOccuring = false; 323 updateChildrenLayersEnabled(); 324 mLauncher.unlockScreenOrientationOnLargeUI(); 325 } 326 327 /** 328 * Initializes various states for this workspace. 329 */ 330 protected void initWorkspace() { 331 Context context = getContext(); 332 mCurrentPage = mDefaultPage; 333 Launcher.setScreen(mCurrentPage); 334 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 335 mIconCache = app.getIconCache(); 336 mExternalDragOutlinePaint.setAntiAlias(true); 337 setWillNotDraw(false); 338 setChildrenDrawnWithCacheEnabled(true); 339 340 try { 341 final Resources res = getResources(); 342 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 343 } catch (Resources.NotFoundException e) { 344 // In this case, we will skip drawing background protection 345 } 346 347 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 348 @Override 349 public void onAnimationStart(Animator animation) { 350 mIsSwitchingState = true; 351 } 352 353 @Override 354 public void onAnimationEnd(Animator animation) { 355 mIsSwitchingState = false; 356 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 357 mAnimator = null; 358 updateChildrenLayersEnabled(); 359 } 360 }; 361 362 mSnapVelocity = 600; 363 mWallpaperOffset = new WallpaperOffsetInterpolator(); 364 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 365 mDisplayWidth = display.getWidth(); 366 mDisplayHeight = display.getHeight(); 367 mWallpaperTravelWidth = (int) (mDisplayWidth * 368 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 369 } 370 371 @Override 372 protected int getScrollMode() { 373 return SmoothPagedView.X_LARGE_MODE; 374 } 375 376 @Override 377 protected void onViewAdded(View child) { 378 super.onViewAdded(child); 379 if (!(child instanceof CellLayout)) { 380 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 381 } 382 CellLayout cl = ((CellLayout) child); 383 cl.setOnInterceptTouchListener(this); 384 cl.setClickable(true); 385 cl.enableHardwareLayers(); 386 } 387 388 /** 389 * @return The open folder on the current screen, or null if there is none 390 */ 391 Folder getOpenFolder() { 392 DragLayer dragLayer = mLauncher.getDragLayer(); 393 int count = dragLayer.getChildCount(); 394 for (int i = 0; i < count; i++) { 395 View child = dragLayer.getChildAt(i); 396 if (child instanceof Folder) { 397 Folder folder = (Folder) child; 398 if (folder.getInfo().opened) 399 return folder; 400 } 401 } 402 return null; 403 } 404 405 boolean isTouchActive() { 406 return mTouchState != TOUCH_STATE_REST; 407 } 408 409 /** 410 * Adds the specified child in the specified screen. The position and dimension of 411 * the child are defined by x, y, spanX and spanY. 412 * 413 * @param child The child to add in one of the workspace's screens. 414 * @param screen The screen in which to add the child. 415 * @param x The X position of the child in the screen's grid. 416 * @param y The Y position of the child in the screen's grid. 417 * @param spanX The number of cells spanned horizontally by the child. 418 * @param spanY The number of cells spanned vertically by the child. 419 */ 420 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 421 addInScreen(child, container, screen, x, y, spanX, spanY, false); 422 } 423 424 /** 425 * Adds the specified child in the specified screen. The position and dimension of 426 * the child are defined by x, y, spanX and spanY. 427 * 428 * @param child The child to add in one of the workspace's screens. 429 * @param screen The screen in which to add the child. 430 * @param x The X position of the child in the screen's grid. 431 * @param y The Y position of the child in the screen's grid. 432 * @param spanX The number of cells spanned horizontally by the child. 433 * @param spanY The number of cells spanned vertically by the child. 434 * @param insert When true, the child is inserted at the beginning of the children list. 435 */ 436 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 437 boolean insert) { 438 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 439 if (screen < 0 || screen >= getChildCount()) { 440 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 441 + " (was " + screen + "); skipping child"); 442 return; 443 } 444 } 445 446 final CellLayout layout; 447 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 448 layout = mLauncher.getHotseat().getLayout(); 449 child.setOnKeyListener(null); 450 451 // Hide folder title in the hotseat 452 if (child instanceof FolderIcon) { 453 ((FolderIcon) child).setTextVisible(false); 454 } 455 456 if (screen < 0) { 457 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 458 } else { 459 // Note: We do this to ensure that the hotseat is always laid out in the orientation 460 // of the hotseat in order regardless of which orientation they were added 461 x = mLauncher.getHotseat().getCellXFromOrder(screen); 462 y = mLauncher.getHotseat().getCellYFromOrder(screen); 463 } 464 } else { 465 // Show folder title if not in the hotseat 466 if (child instanceof FolderIcon) { 467 ((FolderIcon) child).setTextVisible(true); 468 } 469 470 layout = (CellLayout) getChildAt(screen); 471 child.setOnKeyListener(new BubbleTextViewKeyEventListener()); 472 } 473 474 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 475 if (lp == null) { 476 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 477 } else { 478 lp.cellX = x; 479 lp.cellY = y; 480 lp.cellHSpan = spanX; 481 lp.cellVSpan = spanY; 482 } 483 484 if (spanX < 0 && spanY < 0) { 485 lp.isLockedToGrid = false; 486 } 487 488 // Get the canonical child id to uniquely represent this view in this screen 489 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 490 boolean markCellsAsOccupied = !(child instanceof Folder); 491 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 492 // TODO: This branch occurs when the workspace is adding views 493 // outside of the defined grid 494 // maybe we should be deleting these items from the LauncherModel? 495 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 496 } 497 498 if (!(child instanceof Folder)) { 499 child.setHapticFeedbackEnabled(false); 500 child.setOnLongClickListener(mLongClickListener); 501 } 502 if (child instanceof DropTarget) { 503 mDragController.addDropTarget((DropTarget) child); 504 } 505 } 506 507 /** 508 * Check if the point (x, y) hits a given page. 509 */ 510 private boolean hitsPage(int index, float x, float y) { 511 final View page = getChildAt(index); 512 if (page != null) { 513 float[] localXY = { x, y }; 514 mapPointFromSelfToChild(page, localXY); 515 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 516 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 517 } 518 return false; 519 } 520 521 @Override 522 protected boolean hitsPreviousPage(float x, float y) { 523 // mNextPage is set to INVALID_PAGE whenever we are stationary. 524 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 525 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 526 527 // Only allow tap to next page on large devices, where there's significant margin outside 528 // the active workspace 529 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 530 } 531 532 @Override 533 protected boolean hitsNextPage(float x, float y) { 534 // mNextPage is set to INVALID_PAGE whenever we are stationary. 535 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 536 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 537 538 // Only allow tap to next page on large devices, where there's significant margin outside 539 // the active workspace 540 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 541 } 542 543 /** 544 * Called directly from a CellLayout (not by the framework), after we've been added as a 545 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 546 * that it should intercept touch events, which is not something that is normally supported. 547 */ 548 @Override 549 public boolean onTouch(View v, MotionEvent event) { 550 return (isSmall() || mIsSwitchingState); 551 } 552 553 public boolean isSwitchingState() { 554 return mIsSwitchingState; 555 } 556 557 protected void onWindowVisibilityChanged (int visibility) { 558 mLauncher.onWindowVisibilityChanged(visibility); 559 } 560 561 @Override 562 public boolean dispatchUnhandledMove(View focused, int direction) { 563 if (isSmall() || mIsSwitchingState) { 564 // when the home screens are shrunken, shouldn't allow side-scrolling 565 return false; 566 } 567 return super.dispatchUnhandledMove(focused, direction); 568 } 569 570 @Override 571 public boolean onInterceptTouchEvent(MotionEvent ev) { 572 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 573 case MotionEvent.ACTION_DOWN: 574 mXDown = ev.getX(); 575 mYDown = ev.getY(); 576 break; 577 case MotionEvent.ACTION_POINTER_UP: 578 case MotionEvent.ACTION_UP: 579 if (mTouchState == TOUCH_STATE_REST) { 580 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 581 if (!currentPage.lastDownOnOccupiedCell()) { 582 onWallpaperTap(ev); 583 } 584 } 585 } 586 return super.onInterceptTouchEvent(ev); 587 } 588 589 @Override 590 protected void determineScrollingStart(MotionEvent ev) { 591 if (!isSmall() && !mIsSwitchingState) { 592 float deltaX = Math.abs(ev.getX() - mXDown); 593 float deltaY = Math.abs(ev.getY() - mYDown); 594 595 if (Float.compare(deltaX, 0f) == 0) return; 596 597 float slope = deltaY / deltaX; 598 float theta = (float) Math.atan(slope); 599 600 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 601 cancelCurrentPageLongPress(); 602 } 603 604 if (theta > MAX_SWIPE_ANGLE) { 605 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 606 return; 607 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 608 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 609 // increase the touch slop to make it harder to begin scrolling the workspace. This 610 // results in vertically scrolling widgets to more easily. The higher the angle, the 611 // more we increase touch slop. 612 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 613 float extraRatio = (float) 614 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 615 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 616 } else { 617 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 618 super.determineScrollingStart(ev); 619 } 620 } 621 } 622 623 @Override 624 protected boolean isScrollingIndicatorEnabled() { 625 return mState != State.SPRING_LOADED; 626 } 627 628 protected void onPageBeginMoving() { 629 super.onPageBeginMoving(); 630 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 631 632 if (isHardwareAccelerated()) { 633 updateChildrenLayersEnabled(); 634 } else { 635 if (mNextPage != INVALID_PAGE) { 636 // we're snapping to a particular screen 637 enableChildrenCache(mCurrentPage, mNextPage); 638 } else { 639 // this is when user is actively dragging a particular screen, they might 640 // swipe it either left or right (but we won't advance by more than one screen) 641 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 642 } 643 } 644 645 // Only show page outlines as we pan if we are on large screen 646 if (LauncherApplication.isScreenLarge()) { 647 showOutlines(); 648 } 649 } 650 651 protected void onPageEndMoving() { 652 super.onPageEndMoving(); 653 654 if (isHardwareAccelerated()) { 655 updateChildrenLayersEnabled(); 656 } else { 657 clearChildrenCache(); 658 } 659 660 // Hide the outlines, as long as we're not dragging 661 if (!mDragController.dragging()) { 662 // Only hide page outlines as we pan if we are on large screen 663 if (LauncherApplication.isScreenLarge()) { 664 hideOutlines(); 665 } 666 } 667 mOverScrollMaxBackgroundAlpha = 0.0f; 668 mOverScrollPageIndex = -1; 669 670 if (mDelayedResizeRunnable != null) { 671 mDelayedResizeRunnable.run(); 672 mDelayedResizeRunnable = null; 673 } 674 } 675 676 @Override 677 protected void notifyPageSwitchListener() { 678 super.notifyPageSwitchListener(); 679 Launcher.setScreen(mCurrentPage); 680 }; 681 682 // As a ratio of screen height, the total distance we want the parallax effect to span 683 // vertically 684 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 685 return 1.1f; 686 } 687 688 // As a ratio of screen height, the total distance we want the parallax effect to span 689 // horizontally 690 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 691 float aspectRatio = width / (float) height; 692 693 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 694 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 695 // We will use these two data points to extrapolate how much the wallpaper parallax effect 696 // to span (ie travel) at any aspect ratio: 697 698 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 699 final float ASPECT_RATIO_PORTRAIT = 10/16f; 700 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 701 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 702 703 // To find out the desired width at different aspect ratios, we use the following two 704 // formulas, where the coefficient on x is the aspect ratio (width/height): 705 // (16/10)x + y = 1.5 706 // (10/16)x + y = 1.2 707 // We solve for x and y and end up with a final formula: 708 final float x = 709 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 710 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 711 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 712 return x * aspectRatio + y; 713 } 714 715 // The range of scroll values for Workspace 716 private int getScrollRange() { 717 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 718 } 719 720 protected void setWallpaperDimension() { 721 DisplayMetrics displayMetrics = new DisplayMetrics(); 722 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 723 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 724 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 725 726 // We need to ensure that there is enough extra space in the wallpaper for the intended 727 // parallax effects 728 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 729 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 730 new Thread("setWallpaperDimension") { 731 public void run() { 732 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 733 } 734 }.start(); 735 } 736 737 public void setVerticalWallpaperOffset(float offset) { 738 mWallpaperOffset.setFinalY(offset); 739 } 740 public float getVerticalWallpaperOffset() { 741 return mWallpaperOffset.getCurrY(); 742 } 743 public void setHorizontalWallpaperOffset(float offset) { 744 mWallpaperOffset.setFinalX(offset); 745 } 746 public float getHorizontalWallpaperOffset() { 747 return mWallpaperOffset.getCurrX(); 748 } 749 750 private float wallpaperOffsetForCurrentScroll() { 751 final boolean isStaticWallpaper = mIsStaticWallpaper; 752 // The wallpaper travel width is how far, from left to right, the wallpaper will move 753 // at this orientation (for example, in portrait mode we don't move all the way to the 754 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 755 int wallpaperTravelWidth = mWallpaperTravelWidth; 756 if (!isStaticWallpaper) { 757 wallpaperTravelWidth = mWallpaperWidth; 758 } 759 760 // Set wallpaper offset steps (1 / (number of screens - 1)) 761 // We have 3 vertical offset states (centered, and then top/bottom aligned 762 // for all apps/customize) 763 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 764 765 // For the purposes of computing the scrollRange and overScrollOffset, we ignore 766 // assume that mLayoutScale is 1. This means that when we're in spring-loaded mode, 767 // there's no discrepancy between the wallpaper offset for a given page. 768 float layoutScale = mLayoutScale; 769 mLayoutScale = 1f; 770 int scrollRange = getScrollRange(); 771 float scrollProgressOffset = 0; 772 773 // Account for over scroll: you only see the absolute edge of the wallpaper if 774 // you over scroll as far as you can in landscape mode. Only do this for static wallpapers 775 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 776 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 777 if (isStaticWallpaper) { 778 int overScrollOffset = (int) (maxOverScroll() * mDisplayWidth); 779 scrollProgressOffset += overScrollOffset / (float) getScrollRange(); 780 scrollRange += 2 * overScrollOffset; 781 } 782 783 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 784 boolean overScrollWallpaper = LauncherApplication.isScreenLarge(); 785 float adjustedScrollX = overScrollWallpaper ? 786 mScrollX : Math.max(0, Math.min(mScrollX, mMaxScrollX)); 787 adjustedScrollX *= mWallpaperScrollRatio; 788 mLayoutScale = layoutScale; 789 790 float scrollProgress = 791 adjustedScrollX / (float) scrollRange + scrollProgressOffset; 792 float offsetInDips = wallpaperTravelWidth * scrollProgress + 793 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 794 float offset = offsetInDips / (float) mWallpaperWidth; 795 return offset; 796 } 797 private void syncWallpaperOffsetWithScroll() { 798 final boolean enableWallpaperEffects = isHardwareAccelerated(); 799 if (enableWallpaperEffects) { 800 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 801 } 802 } 803 804 public void updateWallpaperOffsetImmediately() { 805 mUpdateWallpaperOffsetImmediately = true; 806 } 807 808 private void updateWallpaperOffsets() { 809 boolean updateNow = false; 810 boolean keepUpdating = true; 811 if (mUpdateWallpaperOffsetImmediately) { 812 updateNow = true; 813 keepUpdating = false; 814 mWallpaperOffset.jumpToFinal(); 815 mUpdateWallpaperOffsetImmediately = false; 816 } else { 817 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 818 } 819 if (updateNow) { 820 if (mWindowToken != null) { 821 mWallpaperManager.setWallpaperOffsets(mWindowToken, 822 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 823 } 824 } 825 if (keepUpdating) { 826 fastInvalidate(); 827 } 828 } 829 830 @Override 831 protected void updateCurrentPageScroll() { 832 super.updateCurrentPageScroll(); 833 computeWallpaperScrollRatio(mCurrentPage); 834 } 835 836 @Override 837 protected void snapToPage(int whichPage) { 838 super.snapToPage(whichPage); 839 computeWallpaperScrollRatio(whichPage); 840 } 841 842 private void computeWallpaperScrollRatio(int page) { 843 // Here, we determine what the desired scroll would be with and without a layout scale, 844 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 845 // as though there is no layout scale. 846 float layoutScale = mLayoutScale; 847 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 848 mLayoutScale = 1.0f; 849 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 850 mLayoutScale = layoutScale; 851 if (scaled > 0) { 852 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 853 } else { 854 mWallpaperScrollRatio = 1f; 855 } 856 } 857 858 class WallpaperOffsetInterpolator { 859 float mFinalHorizontalWallpaperOffset = 0.0f; 860 float mFinalVerticalWallpaperOffset = 0.5f; 861 float mHorizontalWallpaperOffset = 0.0f; 862 float mVerticalWallpaperOffset = 0.5f; 863 long mLastWallpaperOffsetUpdateTime; 864 boolean mIsMovingFast; 865 boolean mOverrideHorizontalCatchupConstant; 866 float mHorizontalCatchupConstant = 0.35f; 867 float mVerticalCatchupConstant = 0.35f; 868 869 public WallpaperOffsetInterpolator() { 870 } 871 872 public void setOverrideHorizontalCatchupConstant(boolean override) { 873 mOverrideHorizontalCatchupConstant = override; 874 } 875 876 public void setHorizontalCatchupConstant(float f) { 877 mHorizontalCatchupConstant = f; 878 } 879 880 public void setVerticalCatchupConstant(float f) { 881 mVerticalCatchupConstant = f; 882 } 883 884 public boolean computeScrollOffset() { 885 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 886 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 887 mIsMovingFast = false; 888 return false; 889 } 890 boolean isLandscape = mDisplayWidth > mDisplayHeight; 891 892 long currentTime = System.currentTimeMillis(); 893 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 894 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 895 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 896 897 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 898 if (!mIsMovingFast && xdiff > 0.07) { 899 mIsMovingFast = true; 900 } 901 902 float fractionToCatchUpIn1MsHorizontal; 903 if (mOverrideHorizontalCatchupConstant) { 904 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 905 } else if (mIsMovingFast) { 906 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 907 } else { 908 // slow 909 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 910 } 911 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 912 913 fractionToCatchUpIn1MsHorizontal /= 33f; 914 fractionToCatchUpIn1MsVertical /= 33f; 915 916 final float UPDATE_THRESHOLD = 0.00001f; 917 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 918 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 919 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 920 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 921 if (jumpToFinalValue) { 922 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 923 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 924 } else { 925 float percentToCatchUpVertical = 926 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 927 float percentToCatchUpHorizontal = 928 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 929 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 930 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 931 } 932 933 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 934 return true; 935 } 936 937 public float getCurrX() { 938 return mHorizontalWallpaperOffset; 939 } 940 941 public float getFinalX() { 942 return mFinalHorizontalWallpaperOffset; 943 } 944 945 public float getCurrY() { 946 return mVerticalWallpaperOffset; 947 } 948 949 public float getFinalY() { 950 return mFinalVerticalWallpaperOffset; 951 } 952 953 public void setFinalX(float x) { 954 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 955 } 956 957 public void setFinalY(float y) { 958 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 959 } 960 961 public void jumpToFinal() { 962 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 963 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 964 } 965 } 966 967 @Override 968 public void computeScroll() { 969 super.computeScroll(); 970 syncWallpaperOffsetWithScroll(); 971 } 972 973 void showOutlines() { 974 if (!isSmall() && !mIsSwitchingState) { 975 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 976 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 977 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 978 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 979 mChildrenOutlineFadeInAnimation.start(); 980 } 981 } 982 983 void hideOutlines() { 984 if (!isSmall() && !mIsSwitchingState) { 985 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 986 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 987 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 988 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 989 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 990 mChildrenOutlineFadeOutAnimation.start(); 991 } 992 } 993 994 public void showOutlinesTemporarily() { 995 if (!mIsPageMoving && !isTouchActive()) { 996 snapToPage(mCurrentPage); 997 } 998 } 999 1000 public void setChildrenOutlineAlpha(float alpha) { 1001 mChildrenOutlineAlpha = alpha; 1002 for (int i = 0; i < getChildCount(); i++) { 1003 CellLayout cl = (CellLayout) getChildAt(i); 1004 cl.setBackgroundAlpha(alpha); 1005 } 1006 } 1007 1008 public float getChildrenOutlineAlpha() { 1009 return mChildrenOutlineAlpha; 1010 } 1011 1012 void disableBackground() { 1013 mDrawBackground = false; 1014 } 1015 void enableBackground() { 1016 mDrawBackground = true; 1017 } 1018 1019 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1020 if (mBackground == null) return; 1021 if (mBackgroundFadeInAnimation != null) { 1022 mBackgroundFadeInAnimation.cancel(); 1023 mBackgroundFadeInAnimation = null; 1024 } 1025 if (mBackgroundFadeOutAnimation != null) { 1026 mBackgroundFadeOutAnimation.cancel(); 1027 mBackgroundFadeOutAnimation = null; 1028 } 1029 float startAlpha = getBackgroundAlpha(); 1030 if (finalAlpha != startAlpha) { 1031 if (animated) { 1032 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1033 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1034 public void onAnimationUpdate(ValueAnimator animation) { 1035 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1036 } 1037 }); 1038 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1039 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1040 mBackgroundFadeOutAnimation.start(); 1041 } else { 1042 setBackgroundAlpha(finalAlpha); 1043 } 1044 } 1045 } 1046 1047 public void setBackgroundAlpha(float alpha) { 1048 if (alpha != mBackgroundAlpha) { 1049 mBackgroundAlpha = alpha; 1050 invalidate(); 1051 } 1052 } 1053 1054 public float getBackgroundAlpha() { 1055 return mBackgroundAlpha; 1056 } 1057 1058 /** 1059 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1060 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1061 * as being larger. This method computes what offset the rotated view should be translated 1062 * in order to minimize this perceived gap. 1063 * @param degrees Angle of the view 1064 * @param width Width of the view 1065 * @param height Height of the view 1066 * @return Offset to be used in a View.setTranslationX() call 1067 */ 1068 private float getOffsetXForRotation(float degrees, int width, int height) { 1069 mMatrix.reset(); 1070 mCamera.save(); 1071 mCamera.rotateY(Math.abs(degrees)); 1072 mCamera.getMatrix(mMatrix); 1073 mCamera.restore(); 1074 1075 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1076 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1077 mTempFloat2[0] = width; 1078 mTempFloat2[1] = height; 1079 mMatrix.mapPoints(mTempFloat2); 1080 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1081 } 1082 1083 float backgroundAlphaInterpolator(float r) { 1084 float pivotA = 0.1f; 1085 float pivotB = 0.4f; 1086 if (r < pivotA) { 1087 return 0; 1088 } else if (r > pivotB) { 1089 return 1.0f; 1090 } else { 1091 return (r - pivotA)/(pivotB - pivotA); 1092 } 1093 } 1094 1095 float overScrollBackgroundAlphaInterpolator(float r) { 1096 float threshold = 0.08f; 1097 1098 if (r > mOverScrollMaxBackgroundAlpha) { 1099 mOverScrollMaxBackgroundAlpha = r; 1100 } else if (r < mOverScrollMaxBackgroundAlpha) { 1101 r = mOverScrollMaxBackgroundAlpha; 1102 } 1103 1104 return Math.min(r / threshold, 1.0f); 1105 } 1106 1107 private void screenScrolledLargeUI(int screenCenter) { 1108 for (int i = 0; i < getChildCount(); i++) { 1109 CellLayout cl = (CellLayout) getChildAt(i); 1110 if (cl != null) { 1111 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1112 float rotation = WORKSPACE_ROTATION * scrollProgress; 1113 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1114 1115 // If the current page (i) is being over scrolled, we use a different 1116 // set of rules for setting the background alpha multiplier. 1117 if (!isSmall()) { 1118 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1119 i == getChildCount() -1 )) { 1120 cl.setBackgroundAlphaMultiplier( 1121 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1122 mOverScrollPageIndex = i; 1123 } else if (mOverScrollPageIndex != i) { 1124 cl.setBackgroundAlphaMultiplier( 1125 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1126 } 1127 } 1128 cl.setTranslationX(translationX); 1129 cl.setRotationY(rotation); 1130 } 1131 } 1132 } 1133 1134 private void resetCellLayoutTransforms(CellLayout cl, boolean left) { 1135 cl.setTranslationX(0); 1136 cl.setRotationY(0); 1137 cl.setOverScrollAmount(0, left); 1138 cl.setPivotX(cl.getMeasuredWidth() / 2); 1139 cl.setPivotY(cl.getMeasuredHeight() / 2); 1140 } 1141 1142 private void screenScrolledStandardUI(int screenCenter) { 1143 if (mScrollX < 0 || mScrollX > mMaxScrollX) { 1144 int index = mScrollX < 0 ? 0 : getChildCount() - 1; 1145 CellLayout cl = (CellLayout) getChildAt(index); 1146 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1147 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1148 float translationX = index == 0 ? mScrollX : - (mMaxScrollX - mScrollX); 1149 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1150 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1151 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1152 cl.setTranslationX(translationX); 1153 cl.setRotationY(rotation); 1154 } else { 1155 // We don't want to mess with the translations during transitions 1156 if (!isSwitchingState()) { 1157 resetCellLayoutTransforms((CellLayout) getChildAt(0), true); 1158 resetCellLayoutTransforms((CellLayout) getChildAt(getChildCount() - 1), false); 1159 } 1160 } 1161 } 1162 1163 @Override 1164 protected void screenScrolled(int screenCenter) { 1165 super.screenScrolled(screenCenter); 1166 if (LauncherApplication.isScreenLarge()) { 1167 screenScrolledLargeUI(screenCenter); 1168 } else { 1169 screenScrolledStandardUI(screenCenter); 1170 } 1171 } 1172 1173 @Override 1174 protected void overScroll(float amount) { 1175 if (LauncherApplication.isScreenLarge()) { 1176 dampedOverScroll(amount); 1177 } else { 1178 acceleratedOverScroll(amount); 1179 } 1180 } 1181 1182 protected void onAttachedToWindow() { 1183 super.onAttachedToWindow(); 1184 mWindowToken = getWindowToken(); 1185 computeScroll(); 1186 mDragController.setWindowToken(mWindowToken); 1187 } 1188 1189 protected void onDetachedFromWindow() { 1190 mWindowToken = null; 1191 } 1192 1193 @Override 1194 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1195 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1196 mUpdateWallpaperOffsetImmediately = true; 1197 } 1198 super.onLayout(changed, left, top, right, bottom); 1199 1200 // if shrinkToBottom() is called on initialization, it has to be deferred 1201 // until after the first call to onLayout so that it has the correct width 1202 if (mSwitchStateAfterFirstLayout) { 1203 mSwitchStateAfterFirstLayout = false; 1204 // shrink can trigger a synchronous onLayout call, so we 1205 // post this to avoid a stack overflow / tangled onLayout calls 1206 post(new Runnable() { 1207 public void run() { 1208 changeState(mStateAfterFirstLayout, false); 1209 } 1210 }); 1211 } 1212 } 1213 1214 @Override 1215 protected void onDraw(Canvas canvas) { 1216 updateWallpaperOffsets(); 1217 1218 // Draw the background gradient if necessary 1219 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1220 int alpha = (int) (mBackgroundAlpha * 255); 1221 mBackground.setAlpha(alpha); 1222 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1223 getMeasuredHeight()); 1224 mBackground.draw(canvas); 1225 } 1226 1227 super.onDraw(canvas); 1228 } 1229 1230 @Override 1231 protected void dispatchDraw(Canvas canvas) { 1232 super.dispatchDraw(canvas); 1233 1234 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1235 final int width = getWidth(); 1236 final int height = getHeight(); 1237 final int pageHeight = getChildAt(0).getHeight(); 1238 1239 // Set the height of the outline to be the height of the page 1240 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1241 final int paddingTop = mPaddingTop + offset; 1242 final int paddingBottom = mPaddingBottom + offset; 1243 1244 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1245 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1246 1247 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1248 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1249 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1250 height - paddingBottom); 1251 d.draw(canvas); 1252 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1253 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1254 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1255 height - paddingBottom); 1256 d.draw(canvas); 1257 } 1258 } 1259 } 1260 1261 @Override 1262 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1263 if (!mLauncher.isAllAppsVisible()) { 1264 final Folder openFolder = getOpenFolder(); 1265 if (openFolder != null) { 1266 return openFolder.requestFocus(direction, previouslyFocusedRect); 1267 } else { 1268 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1269 } 1270 } 1271 return false; 1272 } 1273 1274 @Override 1275 public int getDescendantFocusability() { 1276 if (isSmall()) { 1277 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1278 } 1279 return super.getDescendantFocusability(); 1280 } 1281 1282 @Override 1283 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1284 if (!mLauncher.isAllAppsVisible()) { 1285 final Folder openFolder = getOpenFolder(); 1286 if (openFolder != null) { 1287 openFolder.addFocusables(views, direction); 1288 } else { 1289 super.addFocusables(views, direction, focusableMode); 1290 } 1291 } 1292 } 1293 1294 public boolean isSmall() { 1295 return mState == State.SMALL || mState == State.SPRING_LOADED; 1296 } 1297 1298 void enableChildrenCache(int fromPage, int toPage) { 1299 if (fromPage > toPage) { 1300 final int temp = fromPage; 1301 fromPage = toPage; 1302 toPage = temp; 1303 } 1304 1305 final int screenCount = getChildCount(); 1306 1307 fromPage = Math.max(fromPage, 0); 1308 toPage = Math.min(toPage, screenCount - 1); 1309 1310 for (int i = fromPage; i <= toPage; i++) { 1311 final CellLayout layout = (CellLayout) getChildAt(i); 1312 layout.setChildrenDrawnWithCacheEnabled(true); 1313 layout.setChildrenDrawingCacheEnabled(true); 1314 } 1315 } 1316 1317 void clearChildrenCache() { 1318 final int screenCount = getChildCount(); 1319 for (int i = 0; i < screenCount; i++) { 1320 final CellLayout layout = (CellLayout) getChildAt(i); 1321 layout.setChildrenDrawnWithCacheEnabled(false); 1322 // In software mode, we don't want the items to continue to be drawn into bitmaps 1323 if (!isHardwareAccelerated()) { 1324 layout.setChildrenDrawingCacheEnabled(false); 1325 } 1326 } 1327 } 1328 1329 private void updateChildrenLayersEnabled() { 1330 boolean small = isSmall() || mIsSwitchingState; 1331 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1332 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1333 1334 if (enableChildrenLayers != mChildrenLayersEnabled) { 1335 mChildrenLayersEnabled = enableChildrenLayers; 1336 for (int i = 0; i < getPageCount(); i++) { 1337 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1338 } 1339 } 1340 } 1341 1342 protected void onWallpaperTap(MotionEvent ev) { 1343 final int[] position = mTempCell; 1344 getLocationOnScreen(position); 1345 1346 int pointerIndex = ev.getActionIndex(); 1347 position[0] += (int) ev.getX(pointerIndex); 1348 position[1] += (int) ev.getY(pointerIndex); 1349 1350 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1351 ev.getAction() == MotionEvent.ACTION_UP 1352 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1353 position[0], position[1], 0, null); 1354 } 1355 1356 @Override 1357 protected void updateAdjacentPagesAlpha() { 1358 if (!isSmall()) { 1359 super.updateAdjacentPagesAlpha(); 1360 } 1361 } 1362 1363 /* 1364 * This interpolator emulates the rate at which the perceived scale of an object changes 1365 * as its distance from a camera increases. When this interpolator is applied to a scale 1366 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1367 * from the camera. 1368 */ 1369 static class ZInterpolator implements TimeInterpolator { 1370 private float focalLength; 1371 1372 public ZInterpolator(float foc) { 1373 focalLength = foc; 1374 } 1375 1376 public float getInterpolation(float input) { 1377 return (1.0f - focalLength / (focalLength + input)) / 1378 (1.0f - focalLength / (focalLength + 1.0f)); 1379 } 1380 } 1381 1382 /* 1383 * The exact reverse of ZInterpolator. 1384 */ 1385 static class InverseZInterpolator implements TimeInterpolator { 1386 private ZInterpolator zInterpolator; 1387 public InverseZInterpolator(float foc) { 1388 zInterpolator = new ZInterpolator(foc); 1389 } 1390 public float getInterpolation(float input) { 1391 return 1 - zInterpolator.getInterpolation(1 - input); 1392 } 1393 } 1394 1395 /* 1396 * ZInterpolator compounded with an ease-out. 1397 */ 1398 static class ZoomOutInterpolator implements TimeInterpolator { 1399 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1400 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1401 1402 public float getInterpolation(float input) { 1403 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1404 } 1405 } 1406 1407 /* 1408 * InvereZInterpolator compounded with an ease-out. 1409 */ 1410 static class ZoomInInterpolator implements TimeInterpolator { 1411 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1412 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1413 1414 public float getInterpolation(float input) { 1415 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1416 } 1417 } 1418 1419 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1420 1421 /* 1422 * 1423 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1424 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1425 * 1426 * These methods mark the appropriate pages as accepting drops (which alters their visual 1427 * appearance). 1428 * 1429 */ 1430 public void onDragStartedWithItem(View v) { 1431 final Canvas canvas = new Canvas(); 1432 1433 // We need to add extra padding to the bitmap to make room for the glow effect 1434 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1435 1436 // The outline is used to visualize where the item will land if dropped 1437 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1438 } 1439 1440 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1441 final Canvas canvas = new Canvas(); 1442 1443 // We need to add extra padding to the bitmap to make room for the glow effect 1444 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1445 1446 CellLayout cl = (CellLayout) getChildAt(0); 1447 1448 int[] size = cl.cellSpansToSize(spanX, spanY); 1449 1450 // The outline is used to visualize where the item will land if dropped 1451 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1452 } 1453 1454 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1455 // never dragged over 1456 public void onDragStopped(boolean success) { 1457 // In the success case, DragController has already called onDragExit() 1458 if (!success) { 1459 doDragExit(null); 1460 } 1461 } 1462 1463 public void exitWidgetResizeMode() { 1464 DragLayer dragLayer = mLauncher.getDragLayer(); 1465 dragLayer.clearAllResizeFrames(); 1466 } 1467 1468 private void initAnimationArrays() { 1469 final int childCount = getChildCount(); 1470 if (mOldTranslationXs != null) return; 1471 mOldTranslationXs = new float[childCount]; 1472 mOldTranslationYs = new float[childCount]; 1473 mOldScaleXs = new float[childCount]; 1474 mOldScaleYs = new float[childCount]; 1475 mOldBackgroundAlphas = new float[childCount]; 1476 mOldBackgroundAlphaMultipliers = new float[childCount]; 1477 mOldAlphas = new float[childCount]; 1478 mOldRotationYs = new float[childCount]; 1479 mNewTranslationXs = new float[childCount]; 1480 mNewTranslationYs = new float[childCount]; 1481 mNewScaleXs = new float[childCount]; 1482 mNewScaleYs = new float[childCount]; 1483 mNewBackgroundAlphas = new float[childCount]; 1484 mNewBackgroundAlphaMultipliers = new float[childCount]; 1485 mNewAlphas = new float[childCount]; 1486 mNewRotationYs = new float[childCount]; 1487 } 1488 1489 public void changeState(State shrinkState) { 1490 changeState(shrinkState, true); 1491 } 1492 1493 void changeState(final State state, boolean animated) { 1494 changeState(state, animated, 0); 1495 } 1496 1497 void changeState(final State state, boolean animated, int delay) { 1498 if (mFirstLayout) { 1499 // (mFirstLayout == "first layout has not happened yet") 1500 // cancel any pending shrinks that were set earlier 1501 mSwitchStateAfterFirstLayout = false; 1502 mStateAfterFirstLayout = state; 1503 return; 1504 } 1505 1506 if (mAnimator != null) { 1507 mAnimator.cancel(); 1508 } 1509 1510 // Stop any scrolling, move to the current page right away 1511 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1512 1513 float finalScaleFactor = 1.0f; 1514 float finalBackgroundAlpha = (state == State.SPRING_LOADED) ? 1.0f : 0f; 1515 boolean normalState = false; 1516 State oldState = mState; 1517 mState = state; 1518 boolean zoomIn = true; 1519 1520 if (state != State.NORMAL) { 1521 finalScaleFactor = mSpringLoadedShrinkFactor - (state == State.SMALL ? 0.1f : 0); 1522 if (oldState == State.NORMAL && state == State.SMALL) { 1523 zoomIn = false; 1524 if (animated) { 1525 hideScrollingIndicator(true); 1526 } 1527 setLayoutScale(finalScaleFactor); 1528 updateChildrenLayersEnabled(); 1529 } else { 1530 finalBackgroundAlpha = 1.0f; 1531 setLayoutScale(finalScaleFactor); 1532 } 1533 } else { 1534 setLayoutScale(1.0f); 1535 normalState = true; 1536 } 1537 1538 float translationX = 0; 1539 float translationY = 0; 1540 1541 mAnimator = new AnimatorSet(); 1542 1543 final int screenCount = getChildCount(); 1544 initAnimationArrays(); 1545 1546 final int duration = zoomIn ? 1547 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1548 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1549 for (int i = 0; i < screenCount; i++) { 1550 final CellLayout cl = (CellLayout)getChildAt(i); 1551 float finalAlphaValue = 0f; 1552 float rotation = 0f; 1553 1554 // Set the final alpha depending on whether we are fading side pages. On phone ui, 1555 // we don't do any of the rotation, or the fading alpha in portrait. See the 1556 // ctor and screenScrolled(). 1557 if (mFadeInAdjacentScreens && normalState) { 1558 finalAlphaValue = (i == mCurrentPage) ? 1f : 0f; 1559 } else { 1560 finalAlphaValue = 1f; 1561 } 1562 1563 if (LauncherApplication.isScreenLarge()) { 1564 if (i < mCurrentPage) { 1565 rotation = WORKSPACE_ROTATION; 1566 } else if (i > mCurrentPage) { 1567 rotation = -WORKSPACE_ROTATION; 1568 } 1569 } 1570 1571 float finalAlphaMultiplierValue = 1f; 1572 // If the screen is not xlarge, then don't rotate the CellLayouts 1573 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1574 // pages. see unshrink(). 1575 if (LauncherApplication.isScreenLarge()) { 1576 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1577 } 1578 1579 mOldAlphas[i] = cl.getAlpha(); 1580 mNewAlphas[i] = finalAlphaValue; 1581 if (animated) { 1582 mOldTranslationXs[i] = cl.getTranslationX(); 1583 mOldTranslationYs[i] = cl.getTranslationY(); 1584 mOldScaleXs[i] = cl.getScaleX(); 1585 mOldScaleYs[i] = cl.getScaleY(); 1586 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1587 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1588 mOldRotationYs[i] = cl.getRotationY(); 1589 1590 mNewTranslationXs[i] = translationX; 1591 mNewTranslationYs[i] = translationY; 1592 mNewScaleXs[i] = finalScaleFactor; 1593 mNewScaleYs[i] = finalScaleFactor; 1594 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1595 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1596 mNewRotationYs[i] = rotation; 1597 } else { 1598 cl.setTranslationX(translationX); 1599 cl.setTranslationY(translationY); 1600 cl.setScaleX(finalScaleFactor); 1601 cl.setScaleY(finalScaleFactor); 1602 cl.setBackgroundAlpha(0.0f); 1603 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1604 cl.setAlpha(finalAlphaValue); 1605 cl.setRotationY(rotation); 1606 mChangeStateAnimationListener.onAnimationEnd(null); 1607 } 1608 } 1609 1610 if (animated) { 1611 ValueAnimator animWithInterpolator = 1612 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1613 1614 if (zoomIn) { 1615 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1616 } 1617 1618 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1619 public void onAnimationUpdate(float a, float b) { 1620 mTransitionProgress = b; 1621 if (b == 0f) { 1622 // an optimization, but not required 1623 return; 1624 } 1625 invalidate(); 1626 for (int i = 0; i < screenCount; i++) { 1627 final CellLayout cl = (CellLayout) getChildAt(i); 1628 cl.fastInvalidate(); 1629 cl.setFastTranslationX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1630 cl.setFastTranslationY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1631 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1632 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1633 cl.setFastBackgroundAlpha( 1634 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1635 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1636 b * mNewBackgroundAlphaMultipliers[i]); 1637 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1638 } 1639 } 1640 }); 1641 1642 ValueAnimator rotationAnim = 1643 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1644 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1645 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1646 public void onAnimationUpdate(float a, float b) { 1647 if (b == 0f) { 1648 // an optimization, but not required 1649 return; 1650 } 1651 for (int i = 0; i < screenCount; i++) { 1652 final CellLayout cl = (CellLayout) getChildAt(i); 1653 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1654 } 1655 } 1656 }); 1657 1658 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1659 mAnimator.setStartDelay(delay); 1660 // If we call this when we're not animated, onAnimationEnd is never called on 1661 // the listener; make sure we only use the listener when we're actually animating 1662 mAnimator.addListener(mChangeStateAnimationListener); 1663 mAnimator.start(); 1664 } 1665 1666 if (state == State.SPRING_LOADED) { 1667 // Right now we're covered by Apps Customize 1668 // Show the background gradient immediately, so the gradient will 1669 // be showing once AppsCustomize disappears 1670 animateBackgroundGradient(getResources().getInteger( 1671 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1672 } else { 1673 // Fade the background gradient away 1674 animateBackgroundGradient(0f, true); 1675 } 1676 } 1677 1678 /** 1679 * Draw the View v into the given Canvas. 1680 * 1681 * @param v the view to draw 1682 * @param destCanvas the canvas to draw on 1683 * @param padding the horizontal and vertical padding to use when drawing 1684 */ 1685 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1686 final Rect clipRect = mTempRect; 1687 v.getDrawingRect(clipRect); 1688 1689 boolean textVisible = false; 1690 1691 destCanvas.save(); 1692 if (v instanceof TextView && pruneToDrawable) { 1693 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1694 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1695 destCanvas.translate(padding / 2, padding / 2); 1696 d.draw(destCanvas); 1697 } else { 1698 if (v instanceof FolderIcon) { 1699 // For FolderIcons the text can bleed into the icon area, and so we need to 1700 // hide the text completely (which can't be achieved by clipping). 1701 if (((FolderIcon) v).getTextVisible()) { 1702 ((FolderIcon) v).setTextVisible(false); 1703 textVisible = true; 1704 } 1705 } else if (v instanceof BubbleTextView) { 1706 final BubbleTextView tv = (BubbleTextView) v; 1707 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1708 tv.getLayout().getLineTop(0); 1709 } else if (v instanceof TextView) { 1710 final TextView tv = (TextView) v; 1711 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1712 tv.getLayout().getLineTop(0); 1713 } 1714 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1715 destCanvas.clipRect(clipRect, Op.REPLACE); 1716 v.draw(destCanvas); 1717 1718 // Restore text visibility of FolderIcon if necessary 1719 if (textVisible) { 1720 ((FolderIcon) v).setTextVisible(true); 1721 } 1722 } 1723 destCanvas.restore(); 1724 } 1725 1726 /** 1727 * Returns a new bitmap to show when the given View is being dragged around. 1728 * Responsibility for the bitmap is transferred to the caller. 1729 */ 1730 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1731 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1732 Bitmap b; 1733 1734 if (v instanceof TextView) { 1735 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1736 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1737 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1738 } else { 1739 b = Bitmap.createBitmap( 1740 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1741 } 1742 1743 canvas.setBitmap(b); 1744 drawDragView(v, canvas, padding, true); 1745 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1746 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1747 canvas.setBitmap(null); 1748 1749 return b; 1750 } 1751 1752 /** 1753 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1754 * Responsibility for the bitmap is transferred to the caller. 1755 */ 1756 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1757 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1758 final Bitmap b = Bitmap.createBitmap( 1759 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1760 1761 canvas.setBitmap(b); 1762 drawDragView(v, canvas, padding, false); 1763 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1764 canvas.setBitmap(null); 1765 return b; 1766 } 1767 1768 /** 1769 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1770 * Responsibility for the bitmap is transferred to the caller. 1771 */ 1772 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1773 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1774 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1775 canvas.setBitmap(b); 1776 1777 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1778 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1779 (h - padding) / (float) orig.getHeight()); 1780 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1781 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1782 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1783 1784 // center the image 1785 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1786 1787 Paint p = new Paint(); 1788 p.setFilterBitmap(true); 1789 canvas.drawBitmap(orig, src, dst, p); 1790 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1791 canvas.setBitmap(null); 1792 1793 return b; 1794 } 1795 1796 /** 1797 * Creates a drag outline to represent a drop (that we don't have the actual information for 1798 * yet). May be changed in the future to alter the drop outline slightly depending on the 1799 * clip description mime data. 1800 */ 1801 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1802 Resources r = getResources(); 1803 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1804 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1805 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1806 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1807 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1808 final Bitmap b = Bitmap.createBitmap( 1809 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1810 1811 canvas.setBitmap(b); 1812 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1813 rectRadius, rectRadius, mExternalDragOutlinePaint); 1814 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1815 canvas.setBitmap(null); 1816 return b; 1817 } 1818 1819 void startDrag(CellLayout.CellInfo cellInfo) { 1820 View child = cellInfo.cell; 1821 1822 // Make sure the drag was started by a long press as opposed to a long click. 1823 if (!child.isInTouchMode()) { 1824 return; 1825 } 1826 1827 mDragInfo = cellInfo; 1828 child.setVisibility(GONE); 1829 1830 child.clearFocus(); 1831 child.setPressed(false); 1832 1833 final Canvas canvas = new Canvas(); 1834 1835 // We need to add extra padding to the bitmap to make room for the glow effect 1836 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1837 1838 // The outline is used to visualize where the item will land if dropped 1839 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1840 beginDragShared(child, this); 1841 } 1842 1843 public void beginDragShared(View child, DragSource source) { 1844 // We need to add extra padding to the bitmap to make room for the glow effect 1845 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1846 1847 // The drag bitmap follows the touch point around on the screen 1848 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1849 1850 final int bmpWidth = b.getWidth(); 1851 1852 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1853 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1854 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1855 1856 Rect dragRect = null; 1857 if (child instanceof BubbleTextView) { 1858 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 1859 int top = child.getPaddingTop(); 1860 int left = (bmpWidth - iconSize) / 2; 1861 int right = left + iconSize; 1862 int bottom = top + iconSize; 1863 dragLayerY += top; 1864 dragRect = new Rect(left, top, right, bottom); 1865 } else if (child instanceof FolderIcon) { 1866 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1867 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1868 } 1869 1870 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1871 DragController.DRAG_ACTION_MOVE, dragRect); 1872 b.recycle(); 1873 } 1874 1875 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1876 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1877 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1878 1879 final int[] cellXY = new int[2]; 1880 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1881 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1882 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1883 cellXY[1]); 1884 } 1885 1886 public boolean transitionStateShouldAllowDrop() { 1887 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1888 } 1889 1890 /** 1891 * {@inheritDoc} 1892 */ 1893 public boolean acceptDrop(DragObject d) { 1894 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1895 if (d.dragSource != this) { 1896 // Don't accept the drop if we're not over a screen at time of drop 1897 if (mDragTargetLayout == null) { 1898 return false; 1899 } 1900 if (!transitionStateShouldAllowDrop()) return false; 1901 1902 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1903 d.dragView, mDragViewVisualCenter); 1904 1905 // We want the point to be mapped to the dragTarget. 1906 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1907 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1908 } else { 1909 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1910 } 1911 1912 int spanX = 1; 1913 int spanY = 1; 1914 View ignoreView = null; 1915 if (mDragInfo != null) { 1916 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1917 spanX = dragCellInfo.spanX; 1918 spanY = dragCellInfo.spanY; 1919 ignoreView = dragCellInfo.cell; 1920 } else { 1921 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1922 spanX = dragInfo.spanX; 1923 spanY = dragInfo.spanY; 1924 } 1925 1926 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1927 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1928 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1929 return true; 1930 } 1931 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1932 mTargetCell)) { 1933 return true; 1934 } 1935 1936 1937 // Don't accept the drop if there's no room for the item 1938 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1939 mLauncher.showOutOfSpaceMessage(); 1940 return false; 1941 } 1942 } 1943 return true; 1944 } 1945 1946 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 1947 boolean considerTimeout) { 1948 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1949 1950 boolean hasntMoved = false; 1951 if (mDragInfo != null) { 1952 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 1953 hasntMoved = (mDragInfo.cellX == targetCell[0] && 1954 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 1955 } 1956 1957 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 1958 return false; 1959 } 1960 1961 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 1962 boolean willBecomeShortcut = 1963 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 1964 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 1965 1966 return (aboveShortcut && willBecomeShortcut); 1967 } 1968 1969 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 1970 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1971 if (dropOverView instanceof FolderIcon) { 1972 FolderIcon fi = (FolderIcon) dropOverView; 1973 if (fi.acceptDrop(dragInfo)) { 1974 return true; 1975 } 1976 } 1977 return false; 1978 } 1979 1980 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 1981 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 1982 View v = target.getChildAt(targetCell[0], targetCell[1]); 1983 boolean hasntMoved = false; 1984 if (mDragInfo != null) { 1985 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 1986 hasntMoved = (mDragInfo.cellX == targetCell[0] && 1987 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 1988 } 1989 1990 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 1991 mCreateUserFolderOnDrop = false; 1992 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 1993 1994 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 1995 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 1996 1997 if (aboveShortcut && willBecomeShortcut) { 1998 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 1999 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2000 // if the drag started here, we need to remove it from the workspace 2001 if (!external) { 2002 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2003 } 2004 2005 Rect folderLocation = new Rect(); 2006 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2007 target.removeView(v); 2008 2009 FolderIcon fi = 2010 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2011 destInfo.cellX = -1; 2012 destInfo.cellY = -1; 2013 sourceInfo.cellX = -1; 2014 sourceInfo.cellY = -1; 2015 2016 // If the dragView is null, we can't animate 2017 boolean animate = dragView != null; 2018 if (animate) { 2019 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2020 postAnimationRunnable); 2021 } else { 2022 fi.addItem(destInfo); 2023 fi.addItem(sourceInfo); 2024 } 2025 return true; 2026 } 2027 return false; 2028 } 2029 2030 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2031 DragObject d, boolean external) { 2032 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2033 if (dropOverView instanceof FolderIcon) { 2034 FolderIcon fi = (FolderIcon) dropOverView; 2035 if (fi.acceptDrop(d.dragInfo)) { 2036 fi.onDrop(d); 2037 2038 // if the drag started here, we need to remove it from the workspace 2039 if (!external) { 2040 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2041 } 2042 return true; 2043 } 2044 } 2045 return false; 2046 } 2047 2048 public void onDrop(DragObject d) { 2049 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2050 mDragViewVisualCenter); 2051 2052 // We want the point to be mapped to the dragTarget. 2053 if (mDragTargetLayout != null) { 2054 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2055 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2056 } else { 2057 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2058 } 2059 } 2060 2061 CellLayout dropTargetLayout = mDragTargetLayout; 2062 2063 int snapScreen = -1; 2064 if (d.dragSource != this) { 2065 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2066 (int) mDragViewVisualCenter[1] }; 2067 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2068 } else if (mDragInfo != null) { 2069 final View cell = mDragInfo.cell; 2070 2071 if (dropTargetLayout != null) { 2072 // Move internally 2073 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2074 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2075 long container = hasMovedIntoHotseat ? 2076 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2077 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2078 int screen = (mTargetCell[0] < 0) ? 2079 mDragInfo.screen : indexOfChild(dropTargetLayout); 2080 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2081 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2082 // First we find the cell nearest to point at which the item is 2083 // dropped, without any consideration to whether there is an item there. 2084 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2085 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2086 // If the item being dropped is a shortcut and the nearest drop 2087 // cell also contains a shortcut, then create a folder with the two shortcuts. 2088 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2089 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2090 return; 2091 } 2092 2093 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2094 return; 2095 } 2096 2097 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2098 // we need to find the nearest cell location that is vacant 2099 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2100 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2101 dropTargetLayout, mTargetCell); 2102 2103 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2104 snapScreen = screen; 2105 snapToPage(screen); 2106 } 2107 2108 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2109 if (hasMovedLayouts) { 2110 // Reparent the view 2111 getParentCellLayoutForView(cell).removeView(cell); 2112 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2113 mDragInfo.spanX, mDragInfo.spanY); 2114 } 2115 2116 // update the item's position after drop 2117 final ItemInfo info = (ItemInfo) cell.getTag(); 2118 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2119 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2120 lp.cellX = mTargetCell[0]; 2121 lp.cellY = mTargetCell[1]; 2122 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2123 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2124 2125 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2126 cell instanceof LauncherAppWidgetHostView) { 2127 final CellLayout cellLayout = dropTargetLayout; 2128 // We post this call so that the widget has a chance to be placed 2129 // in its final location 2130 2131 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2132 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2133 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2134 final Runnable resizeRunnable = new Runnable() { 2135 public void run() { 2136 DragLayer dragLayer = mLauncher.getDragLayer(); 2137 dragLayer.addResizeFrame(info, hostView, cellLayout); 2138 } 2139 }; 2140 post(new Runnable() { 2141 public void run() { 2142 if (!isPageMoving()) { 2143 resizeRunnable.run(); 2144 } else { 2145 mDelayedResizeRunnable = resizeRunnable; 2146 } 2147 } 2148 }); 2149 } 2150 } 2151 2152 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2153 lp.cellY); 2154 } 2155 } 2156 2157 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2158 2159 // Prepare it to be animated into its new position 2160 // This must be called after the view has been re-parented 2161 final Runnable disableHardwareLayersRunnable = new Runnable() { 2162 @Override 2163 public void run() { 2164 mAnimatingViewIntoPlace = false; 2165 updateChildrenLayersEnabled(); 2166 } 2167 }; 2168 mAnimatingViewIntoPlace = true; 2169 if (d.dragView.hasDrawn()) { 2170 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2171 setFinalScrollForPageChange(snapScreen); 2172 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2173 disableHardwareLayersRunnable); 2174 resetFinalScrollForPageChange(snapScreen); 2175 } else { 2176 cell.setVisibility(VISIBLE); 2177 } 2178 parent.onDropChild(cell); 2179 } 2180 } 2181 2182 public void setFinalScrollForPageChange(int screen) { 2183 if (screen >= 0) { 2184 mSavedScrollX = getScrollX(); 2185 CellLayout cl = (CellLayout) getChildAt(screen); 2186 mSavedTranslationX = cl.getTranslationX(); 2187 mSavedRotationY = cl.getRotationY(); 2188 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2189 setScrollX(newX); 2190 cl.setTranslationX(0f); 2191 cl.setRotationY(0f); 2192 } 2193 } 2194 2195 public void resetFinalScrollForPageChange(int screen) { 2196 if (screen >= 0) { 2197 CellLayout cl = (CellLayout) getChildAt(screen); 2198 setScrollX(mSavedScrollX); 2199 cl.setTranslationX(mSavedTranslationX); 2200 cl.setRotationY(mSavedRotationY); 2201 } 2202 } 2203 2204 public void getViewLocationRelativeToSelf(View v, int[] location) { 2205 getLocationInWindow(location); 2206 int x = location[0]; 2207 int y = location[1]; 2208 2209 v.getLocationInWindow(location); 2210 int vX = location[0]; 2211 int vY = location[1]; 2212 2213 location[0] = vX - x; 2214 location[1] = vY - y; 2215 } 2216 2217 public void onDragEnter(DragObject d) { 2218 if (mDragTargetLayout != null) { 2219 mDragTargetLayout.setIsDragOverlapping(false); 2220 mDragTargetLayout.onDragExit(); 2221 } 2222 mDragTargetLayout = getCurrentDropLayout(); 2223 mDragTargetLayout.setIsDragOverlapping(true); 2224 mDragTargetLayout.onDragEnter(); 2225 2226 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2227 // don't need to show the outlines 2228 if (LauncherApplication.isScreenLarge()) { 2229 showOutlines(); 2230 } 2231 } 2232 2233 private void doDragExit(DragObject d) { 2234 // Clean up folders 2235 cleanupFolderCreation(d); 2236 2237 // Reset the scroll area and previous drag target 2238 onResetScrollArea(); 2239 2240 if (mDragTargetLayout != null) { 2241 mDragTargetLayout.setIsDragOverlapping(false); 2242 mDragTargetLayout.onDragExit(); 2243 } 2244 mLastDragOverView = null; 2245 2246 if (!mIsPageMoving) { 2247 hideOutlines(); 2248 } 2249 } 2250 2251 public void onDragExit(DragObject d) { 2252 doDragExit(d); 2253 } 2254 2255 public DropTarget getDropTargetDelegate(DragObject d) { 2256 return null; 2257 } 2258 2259 /** 2260 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2261 * in the returned structure related to the widgets that match the drop (or a null list if it is 2262 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2263 */ 2264 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2265 final LauncherModel model = mLauncher.getModel(); 2266 final ClipDescription desc = event.getClipDescription(); 2267 final int mimeTypeCount = desc.getMimeTypeCount(); 2268 for (int i = 0; i < mimeTypeCount; ++i) { 2269 final String mimeType = desc.getMimeType(i); 2270 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2271 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2272 } else { 2273 final List<WidgetMimeTypeHandlerData> widgets = 2274 model.resolveWidgetsForMimeType(mContext, mimeType); 2275 if (widgets.size() > 0) { 2276 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2277 } 2278 } 2279 } 2280 return null; 2281 } 2282 2283 /** 2284 * Global drag and drop handler 2285 */ 2286 @Override 2287 public boolean onDragEvent(DragEvent event) { 2288 final ClipDescription desc = event.getClipDescription(); 2289 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2290 final int[] pos = new int[2]; 2291 layout.getLocationOnScreen(pos); 2292 // We need to offset the drag coordinates to layout coordinate space 2293 final int x = (int) event.getX() - pos[0]; 2294 final int y = (int) event.getY() - pos[1]; 2295 2296 switch (event.getAction()) { 2297 case DragEvent.ACTION_DRAG_STARTED: { 2298 // Validate this drag 2299 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2300 if (test != null) { 2301 boolean isShortcut = (test.second == null); 2302 if (isShortcut) { 2303 // Check if we have enough space on this screen to add a new shortcut 2304 if (!layout.findCellForSpan(pos, 1, 1)) { 2305 mLauncher.showOutOfSpaceMessage(); 2306 return false; 2307 } 2308 } 2309 } else { 2310 // Show error message if we couldn't accept any of the items 2311 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2312 Toast.LENGTH_SHORT).show(); 2313 return false; 2314 } 2315 2316 // Create the drag outline 2317 // We need to add extra padding to the bitmap to make room for the glow effect 2318 final Canvas canvas = new Canvas(); 2319 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2320 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2321 2322 // Show the current page outlines to indicate that we can accept this drop 2323 showOutlines(); 2324 layout.setIsDragOccuring(true); 2325 layout.onDragEnter(); 2326 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2327 2328 return true; 2329 } 2330 case DragEvent.ACTION_DRAG_LOCATION: 2331 // Visualize the drop location 2332 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2333 return true; 2334 case DragEvent.ACTION_DROP: { 2335 // Try and add any shortcuts 2336 final LauncherModel model = mLauncher.getModel(); 2337 final ClipData data = event.getClipData(); 2338 2339 // We assume that the mime types are ordered in descending importance of 2340 // representation. So we enumerate the list of mime types and alert the 2341 // user if any widgets can handle the drop. Only the most preferred 2342 // representation will be handled. 2343 pos[0] = x; 2344 pos[1] = y; 2345 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2346 if (test != null) { 2347 final int index = test.first; 2348 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2349 final boolean isShortcut = (widgets == null); 2350 final String mimeType = desc.getMimeType(index); 2351 if (isShortcut) { 2352 final Intent intent = data.getItemAt(index).getIntent(); 2353 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2354 onDropExternal(new int[] { x, y }, info, layout, false); 2355 } else { 2356 if (widgets.size() == 1) { 2357 // If there is only one item, then go ahead and add and configure 2358 // that widget 2359 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2360 final PendingAddWidgetInfo createInfo = 2361 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2362 mLauncher.addAppWidgetFromDrop(createInfo, 2363 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2364 } else { 2365 // Show the widget picker dialog if there is more than one widget 2366 // that can handle this data type 2367 final InstallWidgetReceiver.WidgetListAdapter adapter = 2368 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2369 data, widgets, layout, mCurrentPage, pos); 2370 final AlertDialog.Builder builder = 2371 new AlertDialog.Builder(mContext); 2372 builder.setAdapter(adapter, adapter); 2373 builder.setCancelable(true); 2374 builder.setTitle(mContext.getString( 2375 R.string.external_drop_widget_pick_title)); 2376 builder.setIcon(R.drawable.ic_no_applications); 2377 builder.show(); 2378 } 2379 } 2380 } 2381 return true; 2382 } 2383 case DragEvent.ACTION_DRAG_ENDED: 2384 // Hide the page outlines after the drop 2385 layout.setIsDragOccuring(false); 2386 layout.onDragExit(); 2387 hideOutlines(); 2388 return true; 2389 } 2390 return super.onDragEvent(event); 2391 } 2392 2393 /* 2394 * 2395 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2396 * coordinate space. The argument xy is modified with the return result. 2397 * 2398 */ 2399 void mapPointFromSelfToChild(View v, float[] xy) { 2400 mapPointFromSelfToChild(v, xy, null); 2401 } 2402 2403 /* 2404 * 2405 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2406 * coordinate space. The argument xy is modified with the return result. 2407 * 2408 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2409 * computing it itself; we use this to avoid redundant matrix inversions in 2410 * findMatchingPageForDragOver 2411 * 2412 */ 2413 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2414 if (cachedInverseMatrix == null) { 2415 v.getMatrix().invert(mTempInverseMatrix); 2416 cachedInverseMatrix = mTempInverseMatrix; 2417 } 2418 xy[0] = xy[0] + mScrollX - v.getLeft(); 2419 xy[1] = xy[1] + mScrollY - v.getTop(); 2420 cachedInverseMatrix.mapPoints(xy); 2421 } 2422 2423 /* 2424 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2425 * covers the full screen) 2426 */ 2427 void mapPointFromSelfToSibling(View v, float[] xy) { 2428 xy[0] = xy[0] - v.getLeft(); 2429 xy[1] = xy[1] - v.getTop(); 2430 } 2431 2432 /* 2433 * 2434 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2435 * the parent View's coordinate space. The argument xy is modified with the return result. 2436 * 2437 */ 2438 void mapPointFromChildToSelf(View v, float[] xy) { 2439 v.getMatrix().mapPoints(xy); 2440 xy[0] -= (mScrollX - v.getLeft()); 2441 xy[1] -= (mScrollY - v.getTop()); 2442 } 2443 2444 static private float squaredDistance(float[] point1, float[] point2) { 2445 float distanceX = point1[0] - point2[0]; 2446 float distanceY = point2[1] - point2[1]; 2447 return distanceX * distanceX + distanceY * distanceY; 2448 } 2449 2450 /* 2451 * 2452 * Returns true if the passed CellLayout cl overlaps with dragView 2453 * 2454 */ 2455 boolean overlaps(CellLayout cl, DragView dragView, 2456 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2457 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2458 final float[] draggedItemTopLeft = mTempDragCoordinates; 2459 draggedItemTopLeft[0] = dragViewX; 2460 draggedItemTopLeft[1] = dragViewY; 2461 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2462 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2463 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2464 2465 // Transform the dragged item's top left coordinates 2466 // to the CellLayout's local coordinates 2467 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2468 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2469 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2470 2471 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2472 // Transform the dragged item's bottom right coordinates 2473 // to the CellLayout's local coordinates 2474 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2475 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2476 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2477 2478 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2479 float overlap = (overlapRegionRight - overlapRegionLeft) * 2480 (overlapRegionBottom - overlapRegionTop); 2481 if (overlap > 0) { 2482 return true; 2483 } 2484 } 2485 } 2486 return false; 2487 } 2488 2489 /* 2490 * 2491 * This method returns the CellLayout that is currently being dragged to. In order to drag 2492 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2493 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2494 * 2495 * Return null if no CellLayout is currently being dragged over 2496 * 2497 */ 2498 private CellLayout findMatchingPageForDragOver( 2499 DragView dragView, float originX, float originY, boolean exact) { 2500 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2501 // with the item being dragged and then choose the one that's closest to the touch point 2502 final int screenCount = getChildCount(); 2503 CellLayout bestMatchingScreen = null; 2504 float smallestDistSoFar = Float.MAX_VALUE; 2505 2506 for (int i = 0; i < screenCount; i++) { 2507 CellLayout cl = (CellLayout) getChildAt(i); 2508 2509 final float[] touchXy = {originX, originY}; 2510 // Transform the touch coordinates to the CellLayout's local coordinates 2511 // If the touch point is within the bounds of the cell layout, we can return immediately 2512 cl.getMatrix().invert(mTempInverseMatrix); 2513 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2514 2515 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2516 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2517 return cl; 2518 } 2519 2520 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2521 // Get the center of the cell layout in screen coordinates 2522 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2523 cellLayoutCenter[0] = cl.getWidth()/2; 2524 cellLayoutCenter[1] = cl.getHeight()/2; 2525 mapPointFromChildToSelf(cl, cellLayoutCenter); 2526 2527 touchXy[0] = originX; 2528 touchXy[1] = originY; 2529 2530 // Calculate the distance between the center of the CellLayout 2531 // and the touch point 2532 float dist = squaredDistance(touchXy, cellLayoutCenter); 2533 2534 if (dist < smallestDistSoFar) { 2535 smallestDistSoFar = dist; 2536 bestMatchingScreen = cl; 2537 } 2538 } 2539 } 2540 return bestMatchingScreen; 2541 } 2542 2543 // This is used to compute the visual center of the dragView. This point is then 2544 // used to visualize drop locations and determine where to drop an item. The idea is that 2545 // the visual center represents the user's interpretation of where the item is, and hence 2546 // is the appropriate point to use when determining drop location. 2547 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2548 DragView dragView, float[] recycle) { 2549 float res[]; 2550 if (recycle == null) { 2551 res = new float[2]; 2552 } else { 2553 res = recycle; 2554 } 2555 2556 // First off, the drag view has been shifted in a way that is not represented in the 2557 // x and y values or the x/yOffsets. Here we account for that shift. 2558 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2559 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2560 2561 // These represent the visual top and left of drag view if a dragRect was provided. 2562 // If a dragRect was not provided, then they correspond to the actual view left and 2563 // top, as the dragRect is in that case taken to be the entire dragView. 2564 // R.dimen.dragViewOffsetY. 2565 int left = x - xOffset; 2566 int top = y - yOffset; 2567 2568 // In order to find the visual center, we shift by half the dragRect 2569 res[0] = left + dragView.getDragRegion().width() / 2; 2570 res[1] = top + dragView.getDragRegion().height() / 2; 2571 2572 return res; 2573 } 2574 2575 private boolean isDragWidget(DragObject d) { 2576 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2577 d.dragInfo instanceof PendingAddWidgetInfo); 2578 } 2579 private boolean isExternalDragWidget(DragObject d) { 2580 return d.dragSource != this && isDragWidget(d); 2581 } 2582 2583 public void onDragOver(DragObject d) { 2584 // Skip drag over events while we are dragging over side pages 2585 if (mInScrollArea) return; 2586 if (mIsSwitchingState) return; 2587 2588 Rect r = new Rect(); 2589 CellLayout layout = null; 2590 ItemInfo item = (ItemInfo) d.dragInfo; 2591 2592 // Ensure that we have proper spans for the item that we are dropping 2593 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2594 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2595 d.dragView, mDragViewVisualCenter); 2596 2597 // Identify whether we have dragged over a side page 2598 if (isSmall()) { 2599 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2600 mLauncher.getHotseat().getHitRect(r); 2601 if (r.contains(d.x, d.y)) { 2602 layout = mLauncher.getHotseat().getLayout(); 2603 } 2604 } 2605 if (layout == null) { 2606 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, true); 2607 } 2608 if (layout != mDragTargetLayout) { 2609 // Cancel all intermediate folder states 2610 cleanupFolderCreation(d); 2611 2612 if (mDragTargetLayout != null) { 2613 mDragTargetLayout.setIsDragOverlapping(false); 2614 mDragTargetLayout.onDragExit(); 2615 } 2616 mDragTargetLayout = layout; 2617 if (mDragTargetLayout != null) { 2618 mDragTargetLayout.setIsDragOverlapping(true); 2619 mDragTargetLayout.onDragEnter(); 2620 } else { 2621 mLastDragOverView = null; 2622 } 2623 2624 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2625 if (isInSpringLoadedMode) { 2626 if (mLauncher.isHotseatLayout(layout)) { 2627 mSpringLoadedDragController.cancel(); 2628 } else { 2629 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2630 } 2631 } 2632 } 2633 } else { 2634 // Test to see if we are over the hotseat otherwise just use the current page 2635 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2636 mLauncher.getHotseat().getHitRect(r); 2637 if (r.contains(d.x, d.y)) { 2638 layout = mLauncher.getHotseat().getLayout(); 2639 } 2640 } 2641 if (layout == null) { 2642 layout = getCurrentDropLayout(); 2643 } 2644 if (layout != mDragTargetLayout) { 2645 if (mDragTargetLayout != null) { 2646 mDragTargetLayout.setIsDragOverlapping(false); 2647 mDragTargetLayout.onDragExit(); 2648 } 2649 mDragTargetLayout = layout; 2650 mDragTargetLayout.setIsDragOverlapping(true); 2651 mDragTargetLayout.onDragEnter(); 2652 } 2653 } 2654 2655 // Handle the drag over 2656 if (mDragTargetLayout != null) { 2657 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2658 2659 // We want the point to be mapped to the dragTarget. 2660 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2661 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2662 } else { 2663 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2664 } 2665 ItemInfo info = (ItemInfo) d.dragInfo; 2666 2667 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2668 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2669 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2670 mTargetCell[1]); 2671 2672 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2673 mTargetCell, false); 2674 boolean isOverFolder = dragOverView instanceof FolderIcon; 2675 if (dragOverView != mLastDragOverView) { 2676 cancelFolderCreation(); 2677 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2678 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2679 } 2680 } 2681 2682 if (userFolderPending && dragOverView != mLastDragOverView) { 2683 mFolderCreationAlarm.setOnAlarmListener(new 2684 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2685 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2686 } 2687 2688 if (dragOverView != mLastDragOverView && isOverFolder) { 2689 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2690 if (mDragTargetLayout != null) { 2691 mDragTargetLayout.clearDragOutlines(); 2692 } 2693 } 2694 mLastDragOverView = dragOverView; 2695 2696 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2697 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2698 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2699 item.spanX, item.spanY); 2700 } 2701 } 2702 } 2703 2704 private void cleanupFolderCreation(DragObject d) { 2705 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2706 mDragFolderRingAnimator.animateToNaturalState(); 2707 } 2708 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2709 if (d != null) { 2710 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2711 } 2712 } 2713 mFolderCreationAlarm.cancelAlarm(); 2714 } 2715 2716 private void cancelFolderCreation() { 2717 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2718 mDragFolderRingAnimator.animateToNaturalState(); 2719 } 2720 mCreateUserFolderOnDrop = false; 2721 mFolderCreationAlarm.cancelAlarm(); 2722 } 2723 2724 class FolderCreationAlarmListener implements OnAlarmListener { 2725 CellLayout layout; 2726 int cellX; 2727 int cellY; 2728 2729 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2730 this.layout = layout; 2731 this.cellX = cellX; 2732 this.cellY = cellY; 2733 } 2734 2735 public void onAlarm(Alarm alarm) { 2736 if (mDragFolderRingAnimator == null) { 2737 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2738 } 2739 mDragFolderRingAnimator.setCell(cellX, cellY); 2740 mDragFolderRingAnimator.setCellLayout(layout); 2741 mDragFolderRingAnimator.animateToAcceptState(); 2742 layout.showFolderAccept(mDragFolderRingAnimator); 2743 layout.clearDragOutlines(); 2744 mCreateUserFolderOnDrop = true; 2745 } 2746 } 2747 2748 @Override 2749 public void getHitRect(Rect outRect) { 2750 // We want the workspace to have the whole area of the display (it will find the correct 2751 // cell layout to drop to in the existing drag/drop logic. 2752 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2753 } 2754 2755 /** 2756 * Add the item specified by dragInfo to the given layout. 2757 * @return true if successful 2758 */ 2759 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2760 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2761 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2762 return true; 2763 } 2764 mLauncher.showOutOfSpaceMessage(); 2765 return false; 2766 } 2767 2768 private void onDropExternal(int[] touchXY, Object dragInfo, 2769 CellLayout cellLayout, boolean insertAtFirst) { 2770 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2771 } 2772 2773 /** 2774 * Drop an item that didn't originate on one of the workspace screens. 2775 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2776 * come from another app altogether. 2777 * 2778 * NOTE: This can also be called when we are outside of a drag event, when we want 2779 * to add an item to one of the workspace screens. 2780 */ 2781 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2782 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2783 final Runnable exitSpringLoadedRunnable = new Runnable() { 2784 @Override 2785 public void run() { 2786 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2787 } 2788 }; 2789 2790 ItemInfo info = (ItemInfo) dragInfo; 2791 int spanX = info.spanX; 2792 int spanY = info.spanY; 2793 if (mDragInfo != null) { 2794 spanX = mDragInfo.spanX; 2795 spanY = mDragInfo.spanY; 2796 } 2797 2798 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2799 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2800 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2801 final int screen = indexOfChild(cellLayout); 2802 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2803 && mState != State.SPRING_LOADED) { 2804 snapToPage(screen); 2805 } 2806 2807 if (info instanceof PendingAddItemInfo) { 2808 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2809 2810 boolean findNearestVacantCell = true; 2811 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2812 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2813 cellLayout, mTargetCell); 2814 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2815 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2816 mDragTargetLayout, mTargetCell)) { 2817 findNearestVacantCell = false; 2818 } 2819 } 2820 if (findNearestVacantCell) { 2821 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2822 cellLayout, mTargetCell); 2823 } 2824 2825 Runnable onAnimationCompleteRunnable = new Runnable() { 2826 @Override 2827 public void run() { 2828 // When dragging and dropping from customization tray, we deal with creating 2829 // widgets/shortcuts/folders in a slightly different way 2830 switch (pendingInfo.itemType) { 2831 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2832 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2833 container, screen, mTargetCell, null); 2834 break; 2835 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2836 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2837 container, screen, mTargetCell, null); 2838 break; 2839 default: 2840 throw new IllegalStateException("Unknown item type: " + 2841 pendingInfo.itemType); 2842 } 2843 cellLayout.onDragExit(); 2844 } 2845 }; 2846 2847 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2848 // location and size on the home screen. 2849 int loc[] = new int[2]; 2850 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 2851 2852 RectF r = new RectF(); 2853 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 2854 setFinalTransitionTransform(cellLayout); 2855 float cellLayoutScale = 2856 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2857 resetTransitionTransform(cellLayout); 2858 2859 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 2860 // The animation will scale the dragView about its center, so we need to center about 2861 // the final location. 2862 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2863 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2864 2865 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2866 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2867 } else { 2868 // This is for other drag/drop cases, like dragging from All Apps 2869 View view = null; 2870 2871 switch (info.itemType) { 2872 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2873 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2874 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2875 // Came from all apps -- make a copy 2876 info = new ShortcutInfo((ApplicationInfo) info); 2877 } 2878 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2879 (ShortcutInfo) info); 2880 break; 2881 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2882 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2883 (FolderInfo) info, mIconCache); 2884 break; 2885 default: 2886 throw new IllegalStateException("Unknown item type: " + info.itemType); 2887 } 2888 2889 // First we find the cell nearest to point at which the item is 2890 // dropped, without any consideration to whether there is an item there. 2891 if (touchXY != null) { 2892 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2893 cellLayout, mTargetCell); 2894 d.postAnimationRunnable = exitSpringLoadedRunnable; 2895 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2896 d.dragView, d.postAnimationRunnable)) { 2897 return; 2898 } 2899 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2900 return; 2901 } 2902 } 2903 2904 if (touchXY != null) { 2905 // when dragging and dropping, just find the closest free spot 2906 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2907 cellLayout, mTargetCell); 2908 } else { 2909 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2910 } 2911 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2912 info.spanY, insertAtFirst); 2913 cellLayout.onDropChild(view); 2914 cellLayout.animateDrop(); 2915 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2916 cellLayout.getChildrenLayout().measureChild(view); 2917 2918 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2919 lp.cellX, lp.cellY); 2920 2921 if (d.dragView != null) { 2922 // We wrap the animation call in the temporary set and reset of the current 2923 // cellLayout to its final transform -- this means we animate the drag view to 2924 // the correct final location. 2925 setFinalTransitionTransform(cellLayout); 2926 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2927 exitSpringLoadedRunnable); 2928 resetTransitionTransform(cellLayout); 2929 } 2930 } 2931 } 2932 2933 public void setFinalTransitionTransform(CellLayout layout) { 2934 if (isSwitchingState()) { 2935 int index = indexOfChild(layout); 2936 mCurrentScaleX = layout.getScaleX(); 2937 mCurrentScaleY = layout.getScaleY(); 2938 mCurrentTranslationX = layout.getTranslationX(); 2939 mCurrentTranslationY = layout.getTranslationY(); 2940 mCurrentRotationY = layout.getRotationY(); 2941 layout.setScaleX(mNewScaleXs[index]); 2942 layout.setScaleY(mNewScaleYs[index]); 2943 layout.setTranslationX(mNewTranslationXs[index]); 2944 layout.setTranslationY(mNewTranslationYs[index]); 2945 layout.setRotationY(mNewRotationYs[index]); 2946 } 2947 } 2948 public void resetTransitionTransform(CellLayout layout) { 2949 if (isSwitchingState()) { 2950 mCurrentScaleX = layout.getScaleX(); 2951 mCurrentScaleY = layout.getScaleY(); 2952 mCurrentTranslationX = layout.getTranslationX(); 2953 mCurrentTranslationY = layout.getTranslationY(); 2954 mCurrentRotationY = layout.getRotationY(); 2955 layout.setScaleX(mCurrentScaleX); 2956 layout.setScaleY(mCurrentScaleY); 2957 layout.setTranslationX(mCurrentTranslationX); 2958 layout.setTranslationY(mCurrentTranslationY); 2959 layout.setRotationY(mCurrentRotationY); 2960 } 2961 } 2962 2963 /** 2964 * Return the current {@link CellLayout}, correctly picking the destination 2965 * screen while a scroll is in progress. 2966 */ 2967 public CellLayout getCurrentDropLayout() { 2968 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2969 } 2970 2971 /** 2972 * Return the current CellInfo describing our current drag; this method exists 2973 * so that Launcher can sync this object with the correct info when the activity is created/ 2974 * destroyed 2975 * 2976 */ 2977 public CellLayout.CellInfo getDragInfo() { 2978 return mDragInfo; 2979 } 2980 2981 /** 2982 * Calculate the nearest cell where the given object would be dropped. 2983 * 2984 * pixelX and pixelY should be in the coordinate system of layout 2985 */ 2986 private int[] findNearestVacantArea(int pixelX, int pixelY, 2987 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2988 return layout.findNearestVacantArea( 2989 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 2990 } 2991 2992 /** 2993 * Calculate the nearest cell where the given object would be dropped. 2994 * 2995 * pixelX and pixelY should be in the coordinate system of layout 2996 */ 2997 private int[] findNearestArea(int pixelX, int pixelY, 2998 int spanX, int spanY, CellLayout layout, int[] recycle) { 2999 return layout.findNearestArea( 3000 pixelX, pixelY, spanX, spanY, recycle); 3001 } 3002 3003 void setup(DragController dragController) { 3004 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3005 mDragController = dragController; 3006 3007 // hardware layers on children are enabled on startup, but should be disabled until 3008 // needed 3009 updateChildrenLayersEnabled(); 3010 setWallpaperDimension(); 3011 } 3012 3013 /** 3014 * Called at the end of a drag which originated on the workspace. 3015 */ 3016 public void onDropCompleted(View target, DragObject d, boolean success) { 3017 if (success) { 3018 if (target != this) { 3019 if (mDragInfo != null) { 3020 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3021 if (mDragInfo.cell instanceof DropTarget) { 3022 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3023 } 3024 } 3025 } 3026 } else if (mDragInfo != null) { 3027 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3028 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3029 // moved into DragController.cancelDrag(). 3030 doDragExit(null); 3031 CellLayout cellLayout; 3032 if (mLauncher.isHotseatLayout(target)) { 3033 cellLayout = mLauncher.getHotseat().getLayout(); 3034 } else { 3035 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3036 } 3037 cellLayout.onDropChild(mDragInfo.cell); 3038 } 3039 mDragOutline = null; 3040 mDragInfo = null; 3041 } 3042 3043 public boolean isDropEnabled() { 3044 return true; 3045 } 3046 3047 @Override 3048 protected void onRestoreInstanceState(Parcelable state) { 3049 super.onRestoreInstanceState(state); 3050 Launcher.setScreen(mCurrentPage); 3051 } 3052 3053 @Override 3054 public void scrollLeft() { 3055 if (!isSmall() && !mIsSwitchingState) { 3056 super.scrollLeft(); 3057 } 3058 Folder openFolder = getOpenFolder(); 3059 if (openFolder != null) { 3060 openFolder.completeDragExit(); 3061 } 3062 } 3063 3064 @Override 3065 public void scrollRight() { 3066 if (!isSmall() && !mIsSwitchingState) { 3067 super.scrollRight(); 3068 } 3069 Folder openFolder = getOpenFolder(); 3070 if (openFolder != null) { 3071 openFolder.completeDragExit(); 3072 } 3073 } 3074 3075 @Override 3076 public void onEnterScrollArea(int x, int y, int direction) { 3077 // Ignore the scroll area if we are dragging over the hot seat 3078 if (mLauncher.getHotseat() != null) { 3079 Rect r = new Rect(); 3080 mLauncher.getHotseat().getHitRect(r); 3081 if (r.contains(x, y)) { 3082 return; 3083 } 3084 } 3085 3086 if (!isSmall() && !mIsSwitchingState) { 3087 mInScrollArea = true; 3088 3089 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3090 final CellLayout layout = (CellLayout) getChildAt(page); 3091 cancelFolderCreation(); 3092 3093 if (layout != null) { 3094 // Exit the current layout and mark the overlapping layout 3095 if (mDragTargetLayout != null) { 3096 mDragTargetLayout.setIsDragOverlapping(false); 3097 mDragTargetLayout.onDragExit(); 3098 } 3099 mDragTargetLayout = layout; 3100 mDragTargetLayout.setIsDragOverlapping(true); 3101 3102 // Workspace is responsible for drawing the edge glow on adjacent pages, 3103 // so we need to redraw the workspace when this may have changed. 3104 invalidate(); 3105 } 3106 } 3107 } 3108 3109 @Override 3110 public void onExitScrollArea() { 3111 if (mInScrollArea) { 3112 if (mDragTargetLayout != null) { 3113 // Unmark the overlapping layout and re-enter the current layout 3114 mDragTargetLayout.setIsDragOverlapping(false); 3115 mDragTargetLayout = getCurrentDropLayout(); 3116 mDragTargetLayout.onDragEnter(); 3117 3118 // Workspace is responsible for drawing the edge glow on adjacent pages, 3119 // so we need to redraw the workspace when this may have changed. 3120 invalidate(); 3121 } 3122 mInScrollArea = false; 3123 } 3124 } 3125 3126 private void onResetScrollArea() { 3127 if (mDragTargetLayout != null) { 3128 // Unmark the overlapping layout 3129 mDragTargetLayout.setIsDragOverlapping(false); 3130 3131 // Workspace is responsible for drawing the edge glow on adjacent pages, 3132 // so we need to redraw the workspace when this may have changed. 3133 invalidate(); 3134 } 3135 mInScrollArea = false; 3136 } 3137 3138 /** 3139 * Returns a specific CellLayout 3140 */ 3141 CellLayout getParentCellLayoutForView(View v) { 3142 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3143 for (CellLayout layout : layouts) { 3144 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3145 return layout; 3146 } 3147 } 3148 return null; 3149 } 3150 3151 /** 3152 * Returns a list of all the CellLayouts in the workspace. 3153 */ 3154 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3155 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3156 int screenCount = getChildCount(); 3157 for (int screen = 0; screen < screenCount; screen++) { 3158 layouts.add(((CellLayout) getChildAt(screen))); 3159 } 3160 if (mLauncher.getHotseat() != null) { 3161 layouts.add(mLauncher.getHotseat().getLayout()); 3162 } 3163 return layouts; 3164 } 3165 3166 /** 3167 * We should only use this to search for specific children. Do not use this method to modify 3168 * CellLayoutChildren directly. 3169 */ 3170 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3171 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3172 int screenCount = getChildCount(); 3173 for (int screen = 0; screen < screenCount; screen++) { 3174 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3175 } 3176 if (mLauncher.getHotseat() != null) { 3177 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3178 } 3179 return childrenLayouts; 3180 } 3181 3182 public Folder getFolderForTag(Object tag) { 3183 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3184 for (CellLayoutChildren layout: childrenLayouts) { 3185 int count = layout.getChildCount(); 3186 for (int i = 0; i < count; i++) { 3187 View child = layout.getChildAt(i); 3188 if (child instanceof Folder) { 3189 Folder f = (Folder) child; 3190 if (f.getInfo() == tag && f.getInfo().opened) { 3191 return f; 3192 } 3193 } 3194 } 3195 } 3196 return null; 3197 } 3198 3199 public View getViewForTag(Object tag) { 3200 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3201 for (CellLayoutChildren layout: childrenLayouts) { 3202 int count = layout.getChildCount(); 3203 for (int i = 0; i < count; i++) { 3204 View child = layout.getChildAt(i); 3205 if (child.getTag() == tag) { 3206 return child; 3207 } 3208 } 3209 } 3210 return null; 3211 } 3212 3213 void clearDropTargets() { 3214 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3215 for (CellLayoutChildren layout: childrenLayouts) { 3216 int childCount = layout.getChildCount(); 3217 for (int j = 0; j < childCount; j++) { 3218 View v = layout.getChildAt(j); 3219 if (v instanceof DropTarget) { 3220 mDragController.removeDropTarget((DropTarget) v); 3221 } 3222 } 3223 } 3224 } 3225 3226 void removeItems(final ArrayList<ApplicationInfo> apps) { 3227 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3228 3229 final HashSet<String> packageNames = new HashSet<String>(); 3230 final int appCount = apps.size(); 3231 for (int i = 0; i < appCount; i++) { 3232 packageNames.add(apps.get(i).componentName.getPackageName()); 3233 } 3234 3235 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3236 for (final CellLayout layoutParent: cellLayouts) { 3237 final ViewGroup layout = layoutParent.getChildrenLayout(); 3238 3239 // Avoid ANRs by treating each screen separately 3240 post(new Runnable() { 3241 public void run() { 3242 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3243 childrenToRemove.clear(); 3244 3245 int childCount = layout.getChildCount(); 3246 for (int j = 0; j < childCount; j++) { 3247 final View view = layout.getChildAt(j); 3248 Object tag = view.getTag(); 3249 3250 if (tag instanceof ShortcutInfo) { 3251 final ShortcutInfo info = (ShortcutInfo) tag; 3252 final Intent intent = info.intent; 3253 final ComponentName name = intent.getComponent(); 3254 3255 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3256 for (String packageName: packageNames) { 3257 if (packageName.equals(name.getPackageName())) { 3258 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3259 childrenToRemove.add(view); 3260 } 3261 } 3262 } 3263 } else if (tag instanceof FolderInfo) { 3264 final FolderInfo info = (FolderInfo) tag; 3265 final ArrayList<ShortcutInfo> contents = info.contents; 3266 final int contentsCount = contents.size(); 3267 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3268 new ArrayList<ShortcutInfo>(); 3269 3270 for (int k = 0; k < contentsCount; k++) { 3271 final ShortcutInfo appInfo = contents.get(k); 3272 final Intent intent = appInfo.intent; 3273 final ComponentName name = intent.getComponent(); 3274 3275 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3276 for (String packageName: packageNames) { 3277 if (packageName.equals(name.getPackageName())) { 3278 appsToRemoveFromFolder.add(appInfo); 3279 } 3280 } 3281 } 3282 } 3283 for (ShortcutInfo item: appsToRemoveFromFolder) { 3284 info.remove(item); 3285 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3286 } 3287 } else if (tag instanceof LauncherAppWidgetInfo) { 3288 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3289 final AppWidgetProviderInfo provider = 3290 widgets.getAppWidgetInfo(info.appWidgetId); 3291 if (provider != null) { 3292 for (String packageName: packageNames) { 3293 if (packageName.equals(provider.provider.getPackageName())) { 3294 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3295 childrenToRemove.add(view); 3296 } 3297 } 3298 } 3299 } 3300 } 3301 3302 childCount = childrenToRemove.size(); 3303 for (int j = 0; j < childCount; j++) { 3304 View child = childrenToRemove.get(j); 3305 // Note: We can not remove the view directly from CellLayoutChildren as this 3306 // does not re-mark the spaces as unoccupied. 3307 layoutParent.removeViewInLayout(child); 3308 if (child instanceof DropTarget) { 3309 mDragController.removeDropTarget((DropTarget)child); 3310 } 3311 } 3312 3313 if (childCount > 0) { 3314 layout.requestLayout(); 3315 layout.invalidate(); 3316 } 3317 } 3318 }); 3319 } 3320 } 3321 3322 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3323 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3324 for (CellLayoutChildren layout: childrenLayouts) { 3325 int childCount = layout.getChildCount(); 3326 for (int j = 0; j < childCount; j++) { 3327 final View view = layout.getChildAt(j); 3328 Object tag = view.getTag(); 3329 if (tag instanceof ShortcutInfo) { 3330 ShortcutInfo info = (ShortcutInfo)tag; 3331 // We need to check for ACTION_MAIN otherwise getComponent() might 3332 // return null for some shortcuts (for instance, for shortcuts to 3333 // web pages.) 3334 final Intent intent = info.intent; 3335 final ComponentName name = intent.getComponent(); 3336 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3337 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3338 final int appCount = apps.size(); 3339 for (int k = 0; k < appCount; k++) { 3340 ApplicationInfo app = apps.get(k); 3341 if (app.componentName.equals(name)) { 3342 info.setIcon(mIconCache.getIcon(info.intent)); 3343 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3344 new FastBitmapDrawable(info.getIcon(mIconCache)), 3345 null, null); 3346 } 3347 } 3348 } 3349 } 3350 } 3351 } 3352 } 3353 3354 void moveToDefaultScreen(boolean animate) { 3355 if (!isSmall()) { 3356 if (animate) { 3357 snapToPage(mDefaultPage); 3358 } else { 3359 setCurrentPage(mDefaultPage); 3360 } 3361 } 3362 getChildAt(mDefaultPage).requestFocus(); 3363 } 3364 3365 @Override 3366 public void syncPages() { 3367 } 3368 3369 @Override 3370 public void syncPageItems(int page, boolean immediate) { 3371 } 3372 3373 @Override 3374 protected String getCurrentPageDescription() { 3375 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3376 return String.format(mContext.getString(R.string.workspace_scroll_format), 3377 page + 1, getChildCount()); 3378 } 3379 3380 public void getLocationInDragLayer(int[] loc) { 3381 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3382 } 3383 3384 void showDockDivider(boolean immediately) { 3385 final ViewGroup parent = (ViewGroup) getParent(); 3386 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3387 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3388 if (qsbDivider != null && dockDivider != null) { 3389 qsbDivider.setVisibility(View.VISIBLE); 3390 dockDivider.setVisibility(View.VISIBLE); 3391 if (mDividerAnimator != null) { 3392 mDividerAnimator.cancel(); 3393 mDividerAnimator = null; 3394 } 3395 if (immediately) { 3396 qsbDivider.setAlpha(1f); 3397 dockDivider.setAlpha(1f); 3398 } else { 3399 mDividerAnimator = new AnimatorSet(); 3400 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3401 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3402 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3403 mDividerAnimator.start(); 3404 } 3405 } 3406 } 3407 3408 void hideDockDivider(boolean immediately) { 3409 final ViewGroup parent = (ViewGroup) getParent(); 3410 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3411 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3412 if (qsbDivider != null && dockDivider != null) { 3413 if (mDividerAnimator != null) { 3414 mDividerAnimator.cancel(); 3415 mDividerAnimator = null; 3416 } 3417 if (immediately) { 3418 qsbDivider.setVisibility(View.GONE); 3419 dockDivider.setVisibility(View.GONE); 3420 qsbDivider.setAlpha(0f); 3421 dockDivider.setAlpha(0f); 3422 } else { 3423 mDividerAnimator = new AnimatorSet(); 3424 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3425 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3426 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3427 private boolean cancelled = false; 3428 @Override 3429 public void onAnimationCancel(android.animation.Animator animation) { 3430 cancelled = true; 3431 } 3432 @Override 3433 public void onAnimationEnd(android.animation.Animator animation) { 3434 if (!cancelled) { 3435 qsbDivider.setVisibility(View.GONE); 3436 dockDivider.setVisibility(View.GONE); 3437 } 3438 } 3439 }); 3440 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3441 mDividerAnimator.start(); 3442 } 3443 } 3444 } 3445} 3446