Workspace.java revision 5037a0b02a720ae14cbf673d7d5bb148f5a524c8
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.Animator.AnimatorListener; 21import android.animation.AnimatorListenerAdapter; 22import android.animation.AnimatorSet; 23import android.animation.ObjectAnimator; 24import android.animation.TimeInterpolator; 25import android.animation.ValueAnimator; 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 86 // These are extra scale factors to apply to the mini home screens 87 // so as to achieve the desired transform 88 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 89 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 90 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 91 92 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 93 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 94 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 95 96 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 97 private static final int BACKGROUND_FADE_IN_DURATION = 350; 98 99 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 100 101 // These animators are used to fade the children's outlines 102 private ObjectAnimator mChildrenOutlineFadeInAnimation; 103 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 104 private float mChildrenOutlineAlpha = 0; 105 106 // These properties refer to the background protection gradient used for AllApps and Customize 107 private ValueAnimator mBackgroundFadeInAnimation; 108 private ValueAnimator mBackgroundFadeOutAnimation; 109 private Drawable mBackground; 110 boolean mDrawBackground = true; 111 private float mBackgroundAlpha = 0; 112 private float mOverScrollMaxBackgroundAlpha = 0.0f; 113 private int mOverScrollPageIndex = -1; 114 private AnimatorSet mDividerAnimator; 115 116 private float mWallpaperScrollRatio = 1.0f; 117 118 private final WallpaperManager mWallpaperManager; 119 private IBinder mWindowToken; 120 121 private int mDefaultPage; 122 123 /** 124 * CellInfo for the cell that is currently being dragged 125 */ 126 private CellLayout.CellInfo mDragInfo; 127 128 /** 129 * Target drop area calculated during last acceptDrop call. 130 */ 131 private int[] mTargetCell = new int[2]; 132 133 /** 134 * The CellLayout that is currently being dragged over 135 */ 136 private CellLayout mDragTargetLayout = null; 137 138 private Launcher mLauncher; 139 private IconCache mIconCache; 140 private DragController mDragController; 141 142 // These are temporary variables to prevent having to allocate a new object just to 143 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 144 private int[] mTempCell = new int[2]; 145 private int[] mTempEstimate = new int[2]; 146 private float[] mDragViewVisualCenter = new float[2]; 147 private float[] mTempDragCoordinates = new float[2]; 148 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 149 private float[] mTempDragBottomRightCoordinates = new float[2]; 150 private Matrix mTempInverseMatrix = new Matrix(); 151 152 private SpringLoadedDragController mSpringLoadedDragController; 153 private float mSpringLoadedShrinkFactor; 154 155 private static final int DEFAULT_CELL_COUNT_X = 4; 156 private static final int DEFAULT_CELL_COUNT_Y = 4; 157 158 // State variable that indicates whether the pages are small (ie when you're 159 // in all apps or customize mode) 160 161 enum State { NORMAL, SPRING_LOADED, SMALL }; 162 private State mState = State.NORMAL; 163 private boolean mIsSwitchingState = false; 164 private boolean mSwitchStateAfterFirstLayout = false; 165 private State mStateAfterFirstLayout; 166 167 private AnimatorSet mAnimator; 168 private AnimatorListener mChangeStateAnimationListener; 169 170 boolean mAnimatingViewIntoPlace = false; 171 boolean mIsDragOccuring = false; 172 boolean mChildrenLayersEnabled = true; 173 174 /** Is the user is dragging an item near the edge of a page? */ 175 private boolean mInScrollArea = false; 176 177 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 178 private Bitmap mDragOutline = null; 179 private final Rect mTempRect = new Rect(); 180 private final int[] mTempXY = new int[2]; 181 private int mDragViewMultiplyColor; 182 183 // Paint used to draw external drop outline 184 private final Paint mExternalDragOutlinePaint = new Paint(); 185 186 // Camera and Matrix used to determine the final position of a neighboring CellLayout 187 private final Matrix mMatrix = new Matrix(); 188 private final Camera mCamera = new Camera(); 189 private final float mTempFloat2[] = new float[2]; 190 191 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 192 int mWallpaperWidth; 193 int mWallpaperHeight; 194 WallpaperOffsetInterpolator mWallpaperOffset; 195 boolean mUpdateWallpaperOffsetImmediately = false; 196 private Runnable mDelayedResizeRunnable; 197 198 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 199 private static final int FOLDER_CREATION_TIMEOUT = 250; 200 private final Alarm mFolderCreationAlarm = new Alarm(); 201 private FolderRingAnimator mDragFolderRingAnimator = null; 202 private View mLastDragOverView = null; 203 private boolean mCreateUserFolderOnDrop = false; 204 205 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 206 private float mXDown; 207 private float mYDown; 208 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 209 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 210 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 211 212 // These variables are used for storing the initial and final values during workspace animations 213 private int mSavedScrollX; 214 private float mSavedRotationY; 215 private float mSavedTranslationX; 216 private float mCurrentScaleX; 217 private float mCurrentScaleY; 218 private float mCurrentRotationY; 219 private float mCurrentTranslationX; 220 private float mCurrentTranslationY; 221 private float[] mOldTranslationXs; 222 private float[] mOldTranslationYs; 223 private float[] mOldScaleXs; 224 private float[] mOldScaleYs; 225 private float[] mOldBackgroundAlphas; 226 private float[] mOldBackgroundAlphaMultipliers; 227 private float[] mOldAlphas; 228 private float[] mOldRotationYs; 229 private float[] mNewTranslationXs; 230 private float[] mNewTranslationYs; 231 private float[] mNewScaleXs; 232 private float[] mNewScaleYs; 233 private float[] mNewBackgroundAlphas; 234 private float[] mNewBackgroundAlphaMultipliers; 235 private float[] mNewAlphas; 236 private float[] mNewRotationYs; 237 private float mTransitionProgress; 238 239 /** 240 * Used to inflate the Workspace from XML. 241 * 242 * @param context The application's context. 243 * @param attrs The attributes set containing the Workspace's customization values. 244 */ 245 public Workspace(Context context, AttributeSet attrs) { 246 this(context, attrs, 0); 247 } 248 249 /** 250 * Used to inflate the Workspace from XML. 251 * 252 * @param context The application's context. 253 * @param attrs The attributes set containing the Workspace's customization values. 254 * @param defStyle Unused. 255 */ 256 public Workspace(Context context, AttributeSet attrs, int defStyle) { 257 super(context, attrs, defStyle); 258 mContentIsRefreshable = false; 259 260 // With workspace, data is available straight from the get-go 261 setDataIsReady(); 262 263 mFadeInAdjacentScreens = 264 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 265 mWallpaperManager = WallpaperManager.getInstance(context); 266 267 int cellCountX = DEFAULT_CELL_COUNT_X; 268 int cellCountY = DEFAULT_CELL_COUNT_Y; 269 270 TypedArray a = context.obtainStyledAttributes(attrs, 271 R.styleable.Workspace, defStyle, 0); 272 273 final Resources res = context.getResources(); 274 if (LauncherApplication.isScreenLarge()) { 275 // Determine number of rows/columns dynamically 276 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 277 // Around that ratio we should make cells the same size in portrait and 278 // landscape 279 TypedArray actionBarSizeTypedArray = 280 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 281 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 282 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 283 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 284 285 cellCountX = 1; 286 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 287 cellCountX++; 288 } 289 290 cellCountY = 1; 291 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 292 <= smallestScreenDim - systemBarHeight) { 293 cellCountY++; 294 } 295 } 296 297 mSpringLoadedShrinkFactor = 298 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 299 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 300 301 // if the value is manually specified, use that instead 302 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 303 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 304 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 305 a.recycle(); 306 307 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 308 setHapticFeedbackEnabled(false); 309 310 initWorkspace(); 311 312 // Disable multitouch across the workspace/all apps/customize tray 313 setMotionEventSplittingEnabled(true); 314 } 315 316 public void onDragStart(DragSource source, Object info, int dragAction) { 317 mIsDragOccuring = true; 318 updateChildrenLayersEnabled(); 319 mLauncher.lockScreenOrientation(); 320 } 321 322 public void onDragEnd() { 323 mIsDragOccuring = false; 324 updateChildrenLayersEnabled(); 325 mLauncher.unlockScreenOrientation(); 326 } 327 328 /** 329 * Initializes various states for this workspace. 330 */ 331 protected void initWorkspace() { 332 Context context = getContext(); 333 mCurrentPage = mDefaultPage; 334 Launcher.setScreen(mCurrentPage); 335 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 336 mIconCache = app.getIconCache(); 337 mExternalDragOutlinePaint.setAntiAlias(true); 338 setWillNotDraw(false); 339 setChildrenDrawnWithCacheEnabled(true); 340 341 try { 342 final Resources res = getResources(); 343 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 344 } catch (Resources.NotFoundException e) { 345 // In this case, we will skip drawing background protection 346 } 347 348 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 349 @Override 350 public void onAnimationStart(Animator animation) { 351 mIsSwitchingState = true; 352 } 353 354 @Override 355 public void onAnimationEnd(Animator animation) { 356 mIsSwitchingState = false; 357 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 358 mAnimator = null; 359 updateChildrenLayersEnabled(); 360 } 361 }; 362 363 mSnapVelocity = 600; 364 mWallpaperOffset = new WallpaperOffsetInterpolator(); 365 } 366 367 @Override 368 protected int getScrollMode() { 369 return SmoothPagedView.X_LARGE_MODE; 370 } 371 372 @Override 373 protected void onViewAdded(View child) { 374 super.onViewAdded(child); 375 if (!(child instanceof CellLayout)) { 376 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 377 } 378 CellLayout cl = ((CellLayout) child); 379 cl.setOnInterceptTouchListener(this); 380 cl.setClickable(true); 381 cl.enableHardwareLayers(); 382 } 383 384 /** 385 * @return The open folder on the current screen, or null if there is none 386 */ 387 Folder getOpenFolder() { 388 DragLayer dragLayer = mLauncher.getDragLayer(); 389 int count = dragLayer.getChildCount(); 390 for (int i = 0; i < count; i++) { 391 View child = dragLayer.getChildAt(i); 392 if (child instanceof Folder) { 393 Folder folder = (Folder) child; 394 if (folder.getInfo().opened) 395 return folder; 396 } 397 } 398 return null; 399 } 400 401 boolean isTouchActive() { 402 return mTouchState != TOUCH_STATE_REST; 403 } 404 405 /** 406 * Adds the specified child in the specified screen. The position and dimension of 407 * the child are defined by x, y, spanX and spanY. 408 * 409 * @param child The child to add in one of the workspace's screens. 410 * @param screen The screen in which to add the child. 411 * @param x The X position of the child in the screen's grid. 412 * @param y The Y position of the child in the screen's grid. 413 * @param spanX The number of cells spanned horizontally by the child. 414 * @param spanY The number of cells spanned vertically by the child. 415 */ 416 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 417 addInScreen(child, container, screen, x, y, spanX, spanY, false); 418 } 419 420 /** 421 * Adds the specified child in the specified screen. The position and dimension of 422 * the child are defined by x, y, spanX and spanY. 423 * 424 * @param child The child to add in one of the workspace's screens. 425 * @param screen The screen in which to add the child. 426 * @param x The X position of the child in the screen's grid. 427 * @param y The Y position of the child in the screen's grid. 428 * @param spanX The number of cells spanned horizontally by the child. 429 * @param spanY The number of cells spanned vertically by the child. 430 * @param insert When true, the child is inserted at the beginning of the children list. 431 */ 432 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 433 boolean insert) { 434 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 435 if (screen < 0 || screen >= getChildCount()) { 436 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 437 + " (was " + screen + "); skipping child"); 438 return; 439 } 440 } 441 442 final CellLayout layout; 443 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 444 layout = mLauncher.getHotseat().getLayout(); 445 child.setOnKeyListener(null); 446 447 // Hide folder title in the hotseat 448 if (child instanceof FolderIcon) { 449 ((FolderIcon) child).setTextVisible(false); 450 } 451 452 if (screen < 0) { 453 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 454 } else { 455 // Note: We do this to ensure that the hotseat is always laid out in the orientation 456 // of the hotseat in order regardless of which orientation they were added 457 x = mLauncher.getHotseat().getCellXFromOrder(screen); 458 y = mLauncher.getHotseat().getCellYFromOrder(screen); 459 } 460 } else { 461 // Show folder title if not in the hotseat 462 if (child instanceof FolderIcon) { 463 ((FolderIcon) child).setTextVisible(true); 464 } 465 466 layout = (CellLayout) getChildAt(screen); 467 child.setOnKeyListener(new BubbleTextViewKeyEventListener()); 468 } 469 470 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 471 if (lp == null) { 472 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 473 } else { 474 lp.cellX = x; 475 lp.cellY = y; 476 lp.cellHSpan = spanX; 477 lp.cellVSpan = spanY; 478 } 479 480 if (spanX < 0 && spanY < 0) { 481 lp.isLockedToGrid = false; 482 } 483 484 // Get the canonical child id to uniquely represent this view in this screen 485 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 486 boolean markCellsAsOccupied = !(child instanceof Folder); 487 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 488 // TODO: This branch occurs when the workspace is adding views 489 // outside of the defined grid 490 // maybe we should be deleting these items from the LauncherModel? 491 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 492 } 493 494 if (!(child instanceof Folder)) { 495 child.setHapticFeedbackEnabled(false); 496 child.setOnLongClickListener(mLongClickListener); 497 } 498 if (child instanceof DropTarget) { 499 mDragController.addDropTarget((DropTarget) child); 500 } 501 } 502 503 /** 504 * Check if the point (x, y) hits a given page. 505 */ 506 private boolean hitsPage(int index, float x, float y) { 507 final View page = getChildAt(index); 508 if (page != null) { 509 float[] localXY = { x, y }; 510 mapPointFromSelfToChild(page, localXY); 511 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 512 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 513 } 514 return false; 515 } 516 517 @Override 518 protected boolean hitsPreviousPage(float x, float y) { 519 // mNextPage is set to INVALID_PAGE whenever we are stationary. 520 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 521 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 522 return hitsPage(current - 1, x, y); 523 } 524 525 @Override 526 protected boolean hitsNextPage(float x, float y) { 527 // mNextPage is set to INVALID_PAGE whenever we are stationary. 528 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 529 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 530 return hitsPage(current + 1, x, y); 531 } 532 533 /** 534 * Called directly from a CellLayout (not by the framework), after we've been added as a 535 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 536 * that it should intercept touch events, which is not something that is normally supported. 537 */ 538 @Override 539 public boolean onTouch(View v, MotionEvent event) { 540 return (isSmall() || mIsSwitchingState); 541 } 542 543 public boolean isSwitchingState() { 544 return mIsSwitchingState; 545 } 546 547 protected void onWindowVisibilityChanged (int visibility) { 548 mLauncher.onWindowVisibilityChanged(visibility); 549 } 550 551 @Override 552 public boolean dispatchUnhandledMove(View focused, int direction) { 553 if (isSmall() || mIsSwitchingState) { 554 // when the home screens are shrunken, shouldn't allow side-scrolling 555 return false; 556 } 557 return super.dispatchUnhandledMove(focused, direction); 558 } 559 560 @Override 561 public boolean onInterceptTouchEvent(MotionEvent ev) { 562 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 563 case MotionEvent.ACTION_DOWN: 564 mXDown = ev.getX(); 565 mYDown = ev.getY(); 566 break; 567 case MotionEvent.ACTION_POINTER_UP: 568 case MotionEvent.ACTION_UP: 569 if (mTouchState == TOUCH_STATE_REST) { 570 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 571 if (!currentPage.lastDownOnOccupiedCell()) { 572 onWallpaperTap(ev); 573 } 574 } 575 } 576 return super.onInterceptTouchEvent(ev); 577 } 578 579 @Override 580 protected void determineScrollingStart(MotionEvent ev) { 581 if (!isSmall() && !mIsSwitchingState) { 582 float deltaX = Math.abs(ev.getX() - mXDown); 583 float deltaY = Math.abs(ev.getY() - mYDown); 584 585 if (Float.compare(deltaX, 0f) == 0) return; 586 587 float slope = deltaY / deltaX; 588 float theta = (float) Math.atan(slope); 589 590 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 591 cancelCurrentPageLongPress(); 592 } 593 594 if (theta > MAX_SWIPE_ANGLE) { 595 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 596 return; 597 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 598 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 599 // increase the touch slop to make it harder to begin scrolling the workspace. This 600 // results in vertically scrolling widgets to more easily. The higher the angle, the 601 // more we increase touch slop. 602 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 603 float extraRatio = (float) 604 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 605 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 606 } else { 607 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 608 super.determineScrollingStart(ev); 609 } 610 } 611 } 612 613 @Override 614 protected boolean isScrollingIndicatorEnabled() { 615 return mState != State.SPRING_LOADED; 616 } 617 618 protected void onPageBeginMoving() { 619 super.onPageBeginMoving(); 620 621 if (isHardwareAccelerated()) { 622 updateChildrenLayersEnabled(); 623 } else { 624 if (mNextPage != INVALID_PAGE) { 625 // we're snapping to a particular screen 626 enableChildrenCache(mCurrentPage, mNextPage); 627 } else { 628 // this is when user is actively dragging a particular screen, they might 629 // swipe it either left or right (but we won't advance by more than one screen) 630 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 631 } 632 } 633 634 // Only show page outlines as we pan if we are on large screen 635 if (LauncherApplication.isScreenLarge()) { 636 showOutlines(); 637 } 638 } 639 640 protected void onPageEndMoving() { 641 super.onPageEndMoving(); 642 643 if (isHardwareAccelerated()) { 644 updateChildrenLayersEnabled(); 645 } else { 646 clearChildrenCache(); 647 } 648 649 // Hide the outlines, as long as we're not dragging 650 if (!mDragController.dragging()) { 651 // Only hide page outlines as we pan if we are on large screen 652 if (LauncherApplication.isScreenLarge()) { 653 hideOutlines(); 654 } 655 } 656 mOverScrollMaxBackgroundAlpha = 0.0f; 657 mOverScrollPageIndex = -1; 658 659 if (mDelayedResizeRunnable != null) { 660 mDelayedResizeRunnable.run(); 661 mDelayedResizeRunnable = null; 662 } 663 } 664 665 @Override 666 protected void notifyPageSwitchListener() { 667 super.notifyPageSwitchListener(); 668 Launcher.setScreen(mCurrentPage); 669 }; 670 671 // As a ratio of screen height, the total distance we want the parallax effect to span 672 // vertically 673 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 674 return 1.1f; 675 } 676 677 // As a ratio of screen height, the total distance we want the parallax effect to span 678 // horizontally 679 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 680 float aspectRatio = width / (float) height; 681 682 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 683 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 684 // We will use these two data points to extrapolate how much the wallpaper parallax effect 685 // to span (ie travel) at any aspect ratio: 686 687 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 688 final float ASPECT_RATIO_PORTRAIT = 10/16f; 689 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 690 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 691 692 // To find out the desired width at different aspect ratios, we use the following two 693 // formulas, where the coefficient on x is the aspect ratio (width/height): 694 // (16/10)x + y = 1.5 695 // (10/16)x + y = 1.2 696 // We solve for x and y and end up with a final formula: 697 final float x = 698 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 699 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 700 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 701 return x * aspectRatio + y; 702 } 703 704 // The range of scroll values for Workspace 705 private int getScrollRange() { 706 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 707 } 708 709 protected void setWallpaperDimension() { 710 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 711 DisplayMetrics displayMetrics = new DisplayMetrics(); 712 display.getRealMetrics(displayMetrics); 713 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 714 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 715 716 // We need to ensure that there is enough extra space in the wallpaper for the intended 717 // parallax effects 718 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 719 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 720 new Thread("setWallpaperDimension") { 721 public void run() { 722 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 723 } 724 }.start(); 725 } 726 727 public void setVerticalWallpaperOffset(float offset) { 728 mWallpaperOffset.setFinalY(offset); 729 } 730 public float getVerticalWallpaperOffset() { 731 return mWallpaperOffset.getCurrY(); 732 } 733 public void setHorizontalWallpaperOffset(float offset) { 734 mWallpaperOffset.setFinalX(offset); 735 } 736 public float getHorizontalWallpaperOffset() { 737 return mWallpaperOffset.getCurrX(); 738 } 739 740 private float wallpaperOffsetForCurrentScroll() { 741 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 742 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 743 // The wallpaper travel width is how far, from left to right, the wallpaper will move 744 // at this orientation (for example, in portrait mode we don't move all the way to the 745 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 746 int wallpaperTravelWidth = (int) (display.getWidth() * 747 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 748 if (!isStaticWallpaper) { 749 wallpaperTravelWidth = mWallpaperWidth; 750 } 751 752 // Set wallpaper offset steps (1 / (number of screens - 1)) 753 // We have 3 vertical offset states (centered, and then top/bottom aligned 754 // for all apps/customize) 755 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 756 757 // For the purposes of computing the scrollRange and overScrollOffset, we ignore 758 // assume that mLayoutScale is 1. This means that when we're in spring-loaded mode, 759 // there's no discrepancy between the wallpaper offset for a given page. 760 float layoutScale = mLayoutScale; 761 mLayoutScale = 1f; 762 int scrollRange = getScrollRange(); 763 float scrollProgressOffset = 0; 764 765 // Account for overscroll: you only see the absolute edge of the wallpaper if 766 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 767 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 768 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 769 if (isStaticWallpaper) { 770 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 771 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 772 scrollRange += 2 * overscrollOffset; 773 } 774 775 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 776 float adjustedScrollX = mWallpaperScrollRatio * mScrollX; 777 mLayoutScale = layoutScale; 778 779 float scrollProgress = 780 adjustedScrollX / (float) scrollRange + scrollProgressOffset; 781 float offsetInDips = wallpaperTravelWidth * scrollProgress + 782 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 783 float offset = offsetInDips / (float) mWallpaperWidth; 784 return offset; 785 } 786 private void syncWallpaperOffsetWithScroll() { 787 final boolean enableWallpaperEffects = isHardwareAccelerated(); 788 if (enableWallpaperEffects) { 789 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 790 } 791 } 792 793 public void updateWallpaperOffsetImmediately() { 794 mUpdateWallpaperOffsetImmediately = true; 795 } 796 797 private void updateWallpaperOffsets() { 798 boolean updateNow = false; 799 boolean keepUpdating = true; 800 if (mUpdateWallpaperOffsetImmediately) { 801 updateNow = true; 802 keepUpdating = false; 803 mWallpaperOffset.jumpToFinal(); 804 mUpdateWallpaperOffsetImmediately = false; 805 } else { 806 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 807 } 808 if (updateNow) { 809 if (mWindowToken != null) { 810 mWallpaperManager.setWallpaperOffsets(mWindowToken, 811 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 812 } 813 } 814 if (keepUpdating) { 815 fastInvalidate(); 816 } 817 } 818 819 @Override 820 protected void updateCurrentPageScroll() { 821 super.updateCurrentPageScroll(); 822 computeWallpaperScrollRatio(mCurrentPage); 823 } 824 825 @Override 826 protected void snapToPage(int whichPage) { 827 super.snapToPage(whichPage); 828 computeWallpaperScrollRatio(whichPage); 829 } 830 831 private void computeWallpaperScrollRatio(int page) { 832 // Here, we determine what the desired scroll would be with and without a layout scale, 833 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 834 // as though there is no layout scale. 835 float layoutScale = mLayoutScale; 836 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 837 mLayoutScale = 1.0f; 838 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 839 mLayoutScale = layoutScale; 840 if (scaled > 0) { 841 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 842 } else { 843 mWallpaperScrollRatio = 1f; 844 } 845 } 846 847 class WallpaperOffsetInterpolator { 848 float mFinalHorizontalWallpaperOffset = 0.0f; 849 float mFinalVerticalWallpaperOffset = 0.5f; 850 float mHorizontalWallpaperOffset = 0.0f; 851 float mVerticalWallpaperOffset = 0.5f; 852 long mLastWallpaperOffsetUpdateTime; 853 boolean mIsMovingFast; 854 boolean mOverrideHorizontalCatchupConstant; 855 float mHorizontalCatchupConstant = 0.35f; 856 float mVerticalCatchupConstant = 0.35f; 857 858 public WallpaperOffsetInterpolator() { 859 } 860 861 public void setOverrideHorizontalCatchupConstant(boolean override) { 862 mOverrideHorizontalCatchupConstant = override; 863 } 864 865 public void setHorizontalCatchupConstant(float f) { 866 mHorizontalCatchupConstant = f; 867 } 868 869 public void setVerticalCatchupConstant(float f) { 870 mVerticalCatchupConstant = f; 871 } 872 873 public boolean computeScrollOffset() { 874 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 875 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 876 mIsMovingFast = false; 877 return false; 878 } 879 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 880 boolean isLandscape = display.getWidth() > display.getHeight(); 881 882 long currentTime = System.currentTimeMillis(); 883 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 884 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 885 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 886 887 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 888 if (!mIsMovingFast && xdiff > 0.07) { 889 mIsMovingFast = true; 890 } 891 892 float fractionToCatchUpIn1MsHorizontal; 893 if (mOverrideHorizontalCatchupConstant) { 894 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 895 } else if (mIsMovingFast) { 896 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 897 } else { 898 // slow 899 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 900 } 901 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 902 903 fractionToCatchUpIn1MsHorizontal /= 33f; 904 fractionToCatchUpIn1MsVertical /= 33f; 905 906 final float UPDATE_THRESHOLD = 0.00001f; 907 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 908 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 909 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 910 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 911 if (jumpToFinalValue) { 912 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 913 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 914 } else { 915 float percentToCatchUpVertical = 916 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 917 float percentToCatchUpHorizontal = 918 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 919 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 920 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 921 } 922 923 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 924 return true; 925 } 926 927 public float getCurrX() { 928 return mHorizontalWallpaperOffset; 929 } 930 931 public float getFinalX() { 932 return mFinalHorizontalWallpaperOffset; 933 } 934 935 public float getCurrY() { 936 return mVerticalWallpaperOffset; 937 } 938 939 public float getFinalY() { 940 return mFinalVerticalWallpaperOffset; 941 } 942 943 public void setFinalX(float x) { 944 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 945 } 946 947 public void setFinalY(float y) { 948 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 949 } 950 951 public void jumpToFinal() { 952 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 953 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 954 } 955 } 956 957 @Override 958 public void computeScroll() { 959 super.computeScroll(); 960 syncWallpaperOffsetWithScroll(); 961 } 962 963 void showOutlines() { 964 if (!isSmall() && !mIsSwitchingState) { 965 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 966 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 967 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 968 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 969 mChildrenOutlineFadeInAnimation.start(); 970 } 971 } 972 973 void hideOutlines() { 974 if (!isSmall() && !mIsSwitchingState) { 975 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 976 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 977 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 978 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 979 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 980 mChildrenOutlineFadeOutAnimation.start(); 981 } 982 } 983 984 public void showOutlinesTemporarily() { 985 if (!mIsPageMoving && !isTouchActive()) { 986 snapToPage(mCurrentPage); 987 } 988 } 989 990 public void setChildrenOutlineAlpha(float alpha) { 991 mChildrenOutlineAlpha = alpha; 992 for (int i = 0; i < getChildCount(); i++) { 993 CellLayout cl = (CellLayout) getChildAt(i); 994 cl.setBackgroundAlpha(alpha); 995 } 996 } 997 998 public float getChildrenOutlineAlpha() { 999 return mChildrenOutlineAlpha; 1000 } 1001 1002 void disableBackground() { 1003 mDrawBackground = false; 1004 } 1005 void enableBackground() { 1006 mDrawBackground = true; 1007 } 1008 1009 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1010 if (mBackground == null) return; 1011 if (mBackgroundFadeInAnimation != null) { 1012 mBackgroundFadeInAnimation.cancel(); 1013 mBackgroundFadeInAnimation = null; 1014 } 1015 if (mBackgroundFadeOutAnimation != null) { 1016 mBackgroundFadeOutAnimation.cancel(); 1017 mBackgroundFadeOutAnimation = null; 1018 } 1019 float startAlpha = getBackgroundAlpha(); 1020 if (finalAlpha != startAlpha) { 1021 if (animated) { 1022 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1023 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1024 public void onAnimationUpdate(ValueAnimator animation) { 1025 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1026 } 1027 }); 1028 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1029 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1030 mBackgroundFadeOutAnimation.start(); 1031 } else { 1032 setBackgroundAlpha(finalAlpha); 1033 } 1034 } 1035 } 1036 1037 public void setBackgroundAlpha(float alpha) { 1038 if (alpha != mBackgroundAlpha) { 1039 mBackgroundAlpha = alpha; 1040 invalidate(); 1041 } 1042 } 1043 1044 public float getBackgroundAlpha() { 1045 return mBackgroundAlpha; 1046 } 1047 1048 /** 1049 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1050 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1051 * as being larger. This method computes what offset the rotated view should be translated 1052 * in order to minimize this perceived gap. 1053 * @param degrees Angle of the view 1054 * @param width Width of the view 1055 * @param height Height of the view 1056 * @return Offset to be used in a View.setTranslationX() call 1057 */ 1058 private float getOffsetXForRotation(float degrees, int width, int height) { 1059 mMatrix.reset(); 1060 mCamera.save(); 1061 mCamera.rotateY(Math.abs(degrees)); 1062 mCamera.getMatrix(mMatrix); 1063 mCamera.restore(); 1064 1065 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1066 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1067 mTempFloat2[0] = width; 1068 mTempFloat2[1] = height; 1069 mMatrix.mapPoints(mTempFloat2); 1070 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1071 } 1072 1073 float backgroundAlphaInterpolator(float r) { 1074 float pivotA = 0.1f; 1075 float pivotB = 0.4f; 1076 if (r < pivotA) { 1077 return 0; 1078 } else if (r > pivotB) { 1079 return 1.0f; 1080 } else { 1081 return (r - pivotA)/(pivotB - pivotA); 1082 } 1083 } 1084 1085 float overScrollBackgroundAlphaInterpolator(float r) { 1086 float threshold = 0.08f; 1087 1088 if (r > mOverScrollMaxBackgroundAlpha) { 1089 mOverScrollMaxBackgroundAlpha = r; 1090 } else if (r < mOverScrollMaxBackgroundAlpha) { 1091 r = mOverScrollMaxBackgroundAlpha; 1092 } 1093 1094 return Math.min(r / threshold, 1.0f); 1095 } 1096 1097 @Override 1098 protected void screenScrolled(int screenCenter) { 1099 super.screenScrolled(screenCenter); 1100 1101 // If the screen is not xlarge, then don't rotate the CellLayouts 1102 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1103 // see unshrink(). 1104 if (!LauncherApplication.isScreenLarge()) return; 1105 1106 final int halfScreenSize = getMeasuredWidth() / 2; 1107 1108 for (int i = 0; i < getChildCount(); i++) { 1109 CellLayout cl = (CellLayout) getChildAt(i); 1110 if (cl != null) { 1111 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1112 int delta = screenCenter - (getChildOffset(i) - 1113 getRelativeChildOffset(i) + halfScreenSize); 1114 1115 float scrollProgress = delta / (totalDistance * 1.0f); 1116 scrollProgress = Math.min(scrollProgress, 1.0f); 1117 scrollProgress = Math.max(scrollProgress, -1.0f); 1118 1119 if (!isSmall()) { 1120 // If the current page (i) is being overscrolled, we use a different 1121 // set of rules for setting the background alpha multiplier. 1122 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1123 i == getChildCount() -1 )) { 1124 cl.setBackgroundAlphaMultiplier( 1125 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1126 mOverScrollPageIndex = i; 1127 } else if (mOverScrollPageIndex != i) { 1128 cl.setBackgroundAlphaMultiplier( 1129 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1130 } 1131 } 1132 1133 float rotation = WORKSPACE_ROTATION * scrollProgress; 1134 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1135 cl.setTranslationX(translationX); 1136 1137 cl.setRotationY(rotation); 1138 } 1139 } 1140 } 1141 1142 protected void onAttachedToWindow() { 1143 super.onAttachedToWindow(); 1144 mWindowToken = getWindowToken(); 1145 computeScroll(); 1146 mDragController.setWindowToken(mWindowToken); 1147 } 1148 1149 protected void onDetachedFromWindow() { 1150 mWindowToken = null; 1151 } 1152 1153 @Override 1154 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1155 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1156 mUpdateWallpaperOffsetImmediately = true; 1157 } 1158 super.onLayout(changed, left, top, right, bottom); 1159 1160 // if shrinkToBottom() is called on initialization, it has to be deferred 1161 // until after the first call to onLayout so that it has the correct width 1162 if (mSwitchStateAfterFirstLayout) { 1163 mSwitchStateAfterFirstLayout = false; 1164 // shrink can trigger a synchronous onLayout call, so we 1165 // post this to avoid a stack overflow / tangled onLayout calls 1166 post(new Runnable() { 1167 public void run() { 1168 changeState(mStateAfterFirstLayout, false); 1169 } 1170 }); 1171 } 1172 } 1173 1174 @Override 1175 protected void onDraw(Canvas canvas) { 1176 updateWallpaperOffsets(); 1177 1178 // Draw the background gradient if necessary 1179 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1180 int alpha = (int) (mBackgroundAlpha * 255); 1181 mBackground.setAlpha(alpha); 1182 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1183 getMeasuredHeight()); 1184 mBackground.draw(canvas); 1185 } 1186 1187 super.onDraw(canvas); 1188 } 1189 1190 @Override 1191 protected void dispatchDraw(Canvas canvas) { 1192 super.dispatchDraw(canvas); 1193 1194 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1195 final int width = getWidth(); 1196 final int height = getHeight(); 1197 final int pageHeight = getChildAt(0).getHeight(); 1198 1199 // This determines the height of the glowing edge: 90% of the page height 1200 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1201 1202 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1203 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1204 1205 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1206 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1207 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1208 d.draw(canvas); 1209 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1210 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1211 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1212 d.draw(canvas); 1213 } 1214 } 1215 } 1216 1217 @Override 1218 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1219 if (!mLauncher.isAllAppsVisible()) { 1220 final Folder openFolder = getOpenFolder(); 1221 if (openFolder != null) { 1222 return openFolder.requestFocus(direction, previouslyFocusedRect); 1223 } else { 1224 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1225 } 1226 } 1227 return false; 1228 } 1229 1230 @Override 1231 public int getDescendantFocusability() { 1232 if (isSmall()) { 1233 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1234 } 1235 return super.getDescendantFocusability(); 1236 } 1237 1238 @Override 1239 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1240 if (!mLauncher.isAllAppsVisible()) { 1241 final Folder openFolder = getOpenFolder(); 1242 if (openFolder != null) { 1243 openFolder.addFocusables(views, direction); 1244 } else { 1245 super.addFocusables(views, direction, focusableMode); 1246 } 1247 } 1248 } 1249 1250 public boolean isSmall() { 1251 return mState == State.SMALL || mState == State.SPRING_LOADED; 1252 } 1253 1254 void enableChildrenCache(int fromPage, int toPage) { 1255 if (fromPage > toPage) { 1256 final int temp = fromPage; 1257 fromPage = toPage; 1258 toPage = temp; 1259 } 1260 1261 final int screenCount = getChildCount(); 1262 1263 fromPage = Math.max(fromPage, 0); 1264 toPage = Math.min(toPage, screenCount - 1); 1265 1266 for (int i = fromPage; i <= toPage; i++) { 1267 final CellLayout layout = (CellLayout) getChildAt(i); 1268 layout.setChildrenDrawnWithCacheEnabled(true); 1269 layout.setChildrenDrawingCacheEnabled(true); 1270 } 1271 } 1272 1273 void clearChildrenCache() { 1274 final int screenCount = getChildCount(); 1275 for (int i = 0; i < screenCount; i++) { 1276 final CellLayout layout = (CellLayout) getChildAt(i); 1277 layout.setChildrenDrawnWithCacheEnabled(false); 1278 // In software mode, we don't want the items to continue to be drawn into bitmaps 1279 if (!isHardwareAccelerated()) { 1280 layout.setChildrenDrawingCacheEnabled(false); 1281 } 1282 } 1283 } 1284 1285 private void updateChildrenLayersEnabled() { 1286 boolean small = isSmall() || mIsSwitchingState; 1287 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1288 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1289 1290 if (enableChildrenLayers != mChildrenLayersEnabled) { 1291 mChildrenLayersEnabled = enableChildrenLayers; 1292 for (int i = 0; i < getPageCount(); i++) { 1293 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1294 } 1295 } 1296 } 1297 1298 protected void onWallpaperTap(MotionEvent ev) { 1299 final int[] position = mTempCell; 1300 getLocationOnScreen(position); 1301 1302 int pointerIndex = ev.getActionIndex(); 1303 position[0] += (int) ev.getX(pointerIndex); 1304 position[1] += (int) ev.getY(pointerIndex); 1305 1306 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1307 ev.getAction() == MotionEvent.ACTION_UP 1308 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1309 position[0], position[1], 0, null); 1310 } 1311 1312 @Override 1313 protected void updateAdjacentPagesAlpha() { 1314 if (!isSmall()) { 1315 super.updateAdjacentPagesAlpha(); 1316 } 1317 } 1318 1319 /* 1320 * This interpolator emulates the rate at which the perceived scale of an object changes 1321 * as its distance from a camera increases. When this interpolator is applied to a scale 1322 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1323 * from the camera. 1324 */ 1325 static class ZInterpolator implements TimeInterpolator { 1326 private float focalLength; 1327 1328 public ZInterpolator(float foc) { 1329 focalLength = foc; 1330 } 1331 1332 public float getInterpolation(float input) { 1333 return (1.0f - focalLength / (focalLength + input)) / 1334 (1.0f - focalLength / (focalLength + 1.0f)); 1335 } 1336 } 1337 1338 /* 1339 * The exact reverse of ZInterpolator. 1340 */ 1341 static class InverseZInterpolator implements TimeInterpolator { 1342 private ZInterpolator zInterpolator; 1343 public InverseZInterpolator(float foc) { 1344 zInterpolator = new ZInterpolator(foc); 1345 } 1346 public float getInterpolation(float input) { 1347 return 1 - zInterpolator.getInterpolation(1 - input); 1348 } 1349 } 1350 1351 /* 1352 * ZInterpolator compounded with an ease-out. 1353 */ 1354 static class ZoomOutInterpolator implements TimeInterpolator { 1355 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1356 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1357 1358 public float getInterpolation(float input) { 1359 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1360 } 1361 } 1362 1363 /* 1364 * InvereZInterpolator compounded with an ease-out. 1365 */ 1366 static class ZoomInInterpolator implements TimeInterpolator { 1367 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1368 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1369 1370 public float getInterpolation(float input) { 1371 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1372 } 1373 } 1374 1375 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1376 1377 /* 1378 * 1379 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1380 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1381 * 1382 * These methods mark the appropriate pages as accepting drops (which alters their visual 1383 * appearance). 1384 * 1385 */ 1386 public void onDragStartedWithItem(View v) { 1387 final Canvas canvas = new Canvas(); 1388 1389 // We need to add extra padding to the bitmap to make room for the glow effect 1390 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1391 1392 // The outline is used to visualize where the item will land if dropped 1393 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1394 } 1395 1396 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1397 final Canvas canvas = new Canvas(); 1398 1399 // We need to add extra padding to the bitmap to make room for the glow effect 1400 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1401 1402 CellLayout cl = (CellLayout) getChildAt(0); 1403 1404 int[] size = cl.cellSpansToSize(spanX, spanY); 1405 1406 // The outline is used to visualize where the item will land if dropped 1407 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1408 } 1409 1410 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1411 // never dragged over 1412 public void onDragStopped(boolean success) { 1413 // In the success case, DragController has already called onDragExit() 1414 if (!success) { 1415 doDragExit(null); 1416 } 1417 } 1418 1419 public void exitWidgetResizeMode() { 1420 DragLayer dragLayer = mLauncher.getDragLayer(); 1421 dragLayer.clearAllResizeFrames(); 1422 } 1423 1424 private void initAnimationArrays() { 1425 final int childCount = getChildCount(); 1426 if (mOldTranslationXs != null) return; 1427 mOldTranslationXs = new float[childCount]; 1428 mOldTranslationYs = new float[childCount]; 1429 mOldScaleXs = new float[childCount]; 1430 mOldScaleYs = new float[childCount]; 1431 mOldBackgroundAlphas = new float[childCount]; 1432 mOldBackgroundAlphaMultipliers = new float[childCount]; 1433 mOldAlphas = new float[childCount]; 1434 mOldRotationYs = new float[childCount]; 1435 mNewTranslationXs = new float[childCount]; 1436 mNewTranslationYs = new float[childCount]; 1437 mNewScaleXs = new float[childCount]; 1438 mNewScaleYs = new float[childCount]; 1439 mNewBackgroundAlphas = new float[childCount]; 1440 mNewBackgroundAlphaMultipliers = new float[childCount]; 1441 mNewAlphas = new float[childCount]; 1442 mNewRotationYs = new float[childCount]; 1443 } 1444 1445 public void changeState(State shrinkState) { 1446 changeState(shrinkState, true); 1447 } 1448 1449 void changeState(final State state, boolean animated) { 1450 if (mFirstLayout) { 1451 // (mFirstLayout == "first layout has not happened yet") 1452 // cancel any pending shrinks that were set earlier 1453 mSwitchStateAfterFirstLayout = false; 1454 mStateAfterFirstLayout = state; 1455 return; 1456 } 1457 1458 if (mAnimator != null) { 1459 mAnimator.cancel(); 1460 } 1461 1462 // Stop any scrolling, move to the current page right away 1463 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1464 1465 float finalScaleFactor = 1.0f; 1466 float finalBackgroundAlpha = 0.0f; 1467 boolean normalState = false; 1468 State oldState = mState; 1469 mState = state; 1470 boolean zoomIn = true; 1471 1472 if (state != State.NORMAL) { 1473 finalScaleFactor = mSpringLoadedShrinkFactor - (state == State.SMALL ? 0.1f : 0); 1474 finalBackgroundAlpha = 1.0f; 1475 if (oldState == State.NORMAL && state == State.SMALL) { 1476 zoomIn = false; 1477 if (animated) { 1478 hideScrollingIndicator(true); 1479 } 1480 setLayoutScale(finalScaleFactor); 1481 updateChildrenLayersEnabled(); 1482 } else { 1483 setLayoutScale(finalScaleFactor); 1484 } 1485 } else { 1486 setLayoutScale(1.0f); 1487 normalState = true; 1488 } 1489 1490 float translationX = 0; 1491 float translationY = 0; 1492 1493 mAnimator = new AnimatorSet(); 1494 1495 final int screenCount = getChildCount(); 1496 initAnimationArrays(); 1497 1498 final int duration = zoomIn ? 1499 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1500 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1501 for (int i = 0; i < screenCount; i++) { 1502 final CellLayout cl = (CellLayout)getChildAt(i); 1503 float finalAlphaValue = 0f; 1504 float rotation = 0f; 1505 1506 // Set the final alpha depending on whether we are fading side pages. On phone ui, 1507 // we don't do any of the rotation, or the fading alpha in portrait. See the 1508 // ctor and screenScrolled(). 1509 if (mFadeInAdjacentScreens && normalState) { 1510 finalAlphaValue = (i == mCurrentPage) ? 1f : 0f; 1511 } else { 1512 finalAlphaValue = 1f; 1513 } 1514 1515 if (LauncherApplication.isScreenLarge()) { 1516 if (i < mCurrentPage) { 1517 rotation = WORKSPACE_ROTATION; 1518 } else if (i > mCurrentPage) { 1519 rotation = -WORKSPACE_ROTATION; 1520 } 1521 } 1522 1523 float finalAlphaMultiplierValue = 1f; 1524 // If the screen is not xlarge, then don't rotate the CellLayouts 1525 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1526 // pages. see unshrink(). 1527 if (LauncherApplication.isScreenLarge()) { 1528 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1529 } 1530 1531 mOldAlphas[i] = cl.getAlpha(); 1532 mNewAlphas[i] = finalAlphaValue; 1533 if (animated) { 1534 mOldTranslationXs[i] = cl.getTranslationX(); 1535 mOldTranslationYs[i] = cl.getTranslationY(); 1536 mOldScaleXs[i] = cl.getScaleX(); 1537 mOldScaleYs[i] = cl.getScaleY(); 1538 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1539 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1540 mOldRotationYs[i] = cl.getRotationY(); 1541 1542 mNewTranslationXs[i] = translationX; 1543 mNewTranslationYs[i] = translationY; 1544 mNewScaleXs[i] = finalScaleFactor; 1545 mNewScaleYs[i] = finalScaleFactor; 1546 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1547 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1548 mNewRotationYs[i] = rotation; 1549 } else { 1550 cl.setTranslationX(translationX); 1551 cl.setTranslationY(translationY); 1552 cl.setScaleX(finalScaleFactor); 1553 cl.setScaleY(finalScaleFactor); 1554 cl.setBackgroundAlpha(0.0f); 1555 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1556 cl.setAlpha(finalAlphaValue); 1557 cl.setRotationY(rotation); 1558 mChangeStateAnimationListener.onAnimationEnd(null); 1559 } 1560 } 1561 1562 if (animated) { 1563 ValueAnimator animWithInterpolator = 1564 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1565 1566 if (zoomIn) { 1567 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1568 } 1569 1570 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1571 public void onAnimationUpdate(float a, float b) { 1572 mTransitionProgress = b; 1573 if (b == 0f) { 1574 // an optimization, but not required 1575 return; 1576 } 1577 invalidate(); 1578 for (int i = 0; i < screenCount; i++) { 1579 final CellLayout cl = (CellLayout) getChildAt(i); 1580 cl.fastInvalidate(); 1581 cl.setFastTranslationX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1582 cl.setFastTranslationY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1583 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1584 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1585 cl.setFastBackgroundAlpha( 1586 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1587 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1588 b * mNewBackgroundAlphaMultipliers[i]); 1589 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1590 } 1591 } 1592 }); 1593 1594 ValueAnimator rotationAnim = 1595 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1596 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1597 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1598 public void onAnimationUpdate(float a, float b) { 1599 if (b == 0f) { 1600 // an optimization, but not required 1601 return; 1602 } 1603 for (int i = 0; i < screenCount; i++) { 1604 final CellLayout cl = (CellLayout) getChildAt(i); 1605 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1606 } 1607 } 1608 }); 1609 1610 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1611 // If we call this when we're not animated, onAnimationEnd is never called on 1612 // the listener; make sure we only use the listener when we're actually animating 1613 mAnimator.addListener(mChangeStateAnimationListener); 1614 mAnimator.start(); 1615 } 1616 1617 if (state == State.SPRING_LOADED) { 1618 // Right now we're covered by Apps Customize 1619 // Show the background gradient immediately, so the gradient will 1620 // be showing once AppsCustomize disappears 1621 animateBackgroundGradient(getResources().getInteger( 1622 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1623 } else { 1624 // Fade the background gradient away 1625 animateBackgroundGradient(0f, true); 1626 } 1627 } 1628 1629 /** 1630 * Draw the View v into the given Canvas. 1631 * 1632 * @param v the view to draw 1633 * @param destCanvas the canvas to draw on 1634 * @param padding the horizontal and vertical padding to use when drawing 1635 */ 1636 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1637 final Rect clipRect = mTempRect; 1638 v.getDrawingRect(clipRect); 1639 1640 boolean textVisible = false; 1641 1642 destCanvas.save(); 1643 if (v instanceof TextView && pruneToDrawable) { 1644 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1645 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1646 destCanvas.translate(padding / 2, padding / 2); 1647 d.draw(destCanvas); 1648 } else { 1649 if (v instanceof FolderIcon) { 1650 // For FolderIcons the text can bleed into the icon area, and so we need to 1651 // hide the text completely (which can't be achieved by clipping). 1652 if (((FolderIcon) v).getTextVisible()) { 1653 ((FolderIcon) v).setTextVisible(false); 1654 textVisible = true; 1655 } 1656 } else if (v instanceof BubbleTextView) { 1657 final BubbleTextView tv = (BubbleTextView) v; 1658 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1659 tv.getLayout().getLineTop(0); 1660 } else if (v instanceof TextView) { 1661 final TextView tv = (TextView) v; 1662 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1663 tv.getLayout().getLineTop(0); 1664 } 1665 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1666 destCanvas.clipRect(clipRect, Op.REPLACE); 1667 v.draw(destCanvas); 1668 1669 // Restore text visibility of FolderIcon if necessary 1670 if (textVisible) { 1671 ((FolderIcon) v).setTextVisible(true); 1672 } 1673 } 1674 destCanvas.restore(); 1675 } 1676 1677 /** 1678 * Returns a new bitmap to show when the given View is being dragged around. 1679 * Responsibility for the bitmap is transferred to the caller. 1680 */ 1681 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1682 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1683 Bitmap b; 1684 1685 if (v instanceof TextView) { 1686 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1687 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1688 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1689 } else { 1690 b = Bitmap.createBitmap( 1691 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1692 } 1693 1694 canvas.setBitmap(b); 1695 drawDragView(v, canvas, padding, true); 1696 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1697 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1698 canvas.setBitmap(null); 1699 1700 return b; 1701 } 1702 1703 /** 1704 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1705 * Responsibility for the bitmap is transferred to the caller. 1706 */ 1707 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1708 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1709 final Bitmap b = Bitmap.createBitmap( 1710 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1711 1712 canvas.setBitmap(b); 1713 drawDragView(v, canvas, padding, false); 1714 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1715 canvas.setBitmap(null); 1716 return b; 1717 } 1718 1719 /** 1720 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1721 * Responsibility for the bitmap is transferred to the caller. 1722 */ 1723 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1724 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1725 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1726 canvas.setBitmap(b); 1727 1728 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1729 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1730 (h - padding) / (float) orig.getHeight()); 1731 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1732 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1733 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1734 1735 // center the image 1736 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1737 1738 Paint p = new Paint(); 1739 p.setFilterBitmap(true); 1740 canvas.drawBitmap(orig, src, dst, p); 1741 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1742 canvas.setBitmap(null); 1743 1744 return b; 1745 } 1746 1747 /** 1748 * Creates a drag outline to represent a drop (that we don't have the actual information for 1749 * yet). May be changed in the future to alter the drop outline slightly depending on the 1750 * clip description mime data. 1751 */ 1752 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1753 Resources r = getResources(); 1754 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1755 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1756 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1757 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1758 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1759 final Bitmap b = Bitmap.createBitmap( 1760 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1761 1762 canvas.setBitmap(b); 1763 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1764 rectRadius, rectRadius, mExternalDragOutlinePaint); 1765 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1766 canvas.setBitmap(null); 1767 return b; 1768 } 1769 1770 void startDrag(CellLayout.CellInfo cellInfo) { 1771 View child = cellInfo.cell; 1772 1773 // Make sure the drag was started by a long press as opposed to a long click. 1774 if (!child.isInTouchMode()) { 1775 return; 1776 } 1777 1778 mDragInfo = cellInfo; 1779 child.setVisibility(GONE); 1780 1781 child.clearFocus(); 1782 child.setPressed(false); 1783 1784 final Canvas canvas = new Canvas(); 1785 1786 // We need to add extra padding to the bitmap to make room for the glow effect 1787 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1788 1789 // The outline is used to visualize where the item will land if dropped 1790 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1791 beginDragShared(child, this); 1792 } 1793 1794 public void beginDragShared(View child, DragSource source) { 1795 // We need to add extra padding to the bitmap to make room for the glow effect 1796 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1797 1798 // The drag bitmap follows the touch point around on the screen 1799 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1800 1801 final int bmpWidth = b.getWidth(); 1802 1803 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1804 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1805 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1806 1807 Rect dragRect = null; 1808 if (child instanceof BubbleTextView) { 1809 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 1810 int top = child.getPaddingTop(); 1811 int left = (bmpWidth - iconSize) / 2; 1812 int right = left + iconSize; 1813 int bottom = top + iconSize; 1814 dragLayerY += top; 1815 dragRect = new Rect(left, top, right, bottom); 1816 } else if (child instanceof FolderIcon) { 1817 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1818 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1819 } 1820 1821 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1822 DragController.DRAG_ACTION_MOVE, dragRect); 1823 b.recycle(); 1824 } 1825 1826 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1827 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1828 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1829 1830 final int[] cellXY = new int[2]; 1831 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1832 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1833 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1834 cellXY[1]); 1835 } 1836 1837 public boolean transitionStateShouldAllowDrop() { 1838 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1839 } 1840 1841 /** 1842 * {@inheritDoc} 1843 */ 1844 public boolean acceptDrop(DragObject d) { 1845 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1846 if (d.dragSource != this) { 1847 // Don't accept the drop if we're not over a screen at time of drop 1848 if (mDragTargetLayout == null) { 1849 return false; 1850 } 1851 if (!transitionStateShouldAllowDrop()) return false; 1852 1853 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1854 d.dragView, mDragViewVisualCenter); 1855 1856 // We want the point to be mapped to the dragTarget. 1857 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1858 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1859 } else { 1860 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1861 } 1862 1863 int spanX = 1; 1864 int spanY = 1; 1865 View ignoreView = null; 1866 if (mDragInfo != null) { 1867 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1868 spanX = dragCellInfo.spanX; 1869 spanY = dragCellInfo.spanY; 1870 ignoreView = dragCellInfo.cell; 1871 } else { 1872 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1873 spanX = dragInfo.spanX; 1874 spanY = dragInfo.spanY; 1875 } 1876 1877 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1878 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1879 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1880 return true; 1881 } 1882 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1883 mTargetCell)) { 1884 return true; 1885 } 1886 1887 1888 // Don't accept the drop if there's no room for the item 1889 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1890 mLauncher.showOutOfSpaceMessage(); 1891 return false; 1892 } 1893 } 1894 return true; 1895 } 1896 1897 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 1898 boolean considerTimeout) { 1899 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1900 1901 boolean hasntMoved = false; 1902 if (mDragInfo != null) { 1903 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 1904 hasntMoved = (mDragInfo.cellX == targetCell[0] && 1905 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 1906 } 1907 1908 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 1909 return false; 1910 } 1911 1912 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 1913 boolean willBecomeShortcut = 1914 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 1915 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 1916 1917 return (aboveShortcut && willBecomeShortcut); 1918 } 1919 1920 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 1921 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1922 if (dropOverView instanceof FolderIcon) { 1923 FolderIcon fi = (FolderIcon) dropOverView; 1924 if (fi.acceptDrop(dragInfo)) { 1925 return true; 1926 } 1927 } 1928 return false; 1929 } 1930 1931 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 1932 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 1933 View v = target.getChildAt(targetCell[0], targetCell[1]); 1934 boolean hasntMoved = false; 1935 if (mDragInfo != null) { 1936 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 1937 hasntMoved = (mDragInfo.cellX == targetCell[0] && 1938 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 1939 } 1940 1941 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 1942 mCreateUserFolderOnDrop = false; 1943 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 1944 1945 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 1946 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 1947 1948 if (aboveShortcut && willBecomeShortcut) { 1949 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 1950 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 1951 // if the drag started here, we need to remove it from the workspace 1952 if (!external) { 1953 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 1954 } 1955 1956 Rect folderLocation = new Rect(); 1957 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 1958 target.removeView(v); 1959 1960 FolderIcon fi = 1961 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 1962 destInfo.cellX = -1; 1963 destInfo.cellY = -1; 1964 sourceInfo.cellX = -1; 1965 sourceInfo.cellY = -1; 1966 1967 // If the dragView is null, we can't animate 1968 boolean animate = dragView != null; 1969 if (animate) { 1970 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 1971 postAnimationRunnable); 1972 } else { 1973 fi.addItem(destInfo); 1974 fi.addItem(sourceInfo); 1975 } 1976 return true; 1977 } 1978 return false; 1979 } 1980 1981 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 1982 DragObject d, boolean external) { 1983 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1984 if (dropOverView instanceof FolderIcon) { 1985 FolderIcon fi = (FolderIcon) dropOverView; 1986 if (fi.acceptDrop(d.dragInfo)) { 1987 fi.onDrop(d); 1988 1989 // if the drag started here, we need to remove it from the workspace 1990 if (!external) { 1991 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 1992 } 1993 return true; 1994 } 1995 } 1996 return false; 1997 } 1998 1999 public void onDrop(DragObject d) { 2000 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2001 mDragViewVisualCenter); 2002 2003 // We want the point to be mapped to the dragTarget. 2004 if (mDragTargetLayout != null) { 2005 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2006 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2007 } else { 2008 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2009 } 2010 } 2011 2012 CellLayout dropTargetLayout = mDragTargetLayout; 2013 2014 int snapScreen = -1; 2015 if (d.dragSource != this) { 2016 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2017 (int) mDragViewVisualCenter[1] }; 2018 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2019 } else if (mDragInfo != null) { 2020 final View cell = mDragInfo.cell; 2021 2022 if (dropTargetLayout != null) { 2023 // Move internally 2024 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2025 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2026 long container = hasMovedIntoHotseat ? 2027 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2028 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2029 int screen = (mTargetCell[0] < 0) ? 2030 mDragInfo.screen : indexOfChild(dropTargetLayout); 2031 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2032 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2033 // First we find the cell nearest to point at which the item is 2034 // dropped, without any consideration to whether there is an item there. 2035 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2036 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2037 // If the item being dropped is a shortcut and the nearest drop 2038 // cell also contains a shortcut, then create a folder with the two shortcuts. 2039 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2040 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2041 return; 2042 } 2043 2044 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2045 return; 2046 } 2047 2048 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2049 // we need to find the nearest cell location that is vacant 2050 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2051 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2052 dropTargetLayout, mTargetCell); 2053 2054 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2055 snapScreen = screen; 2056 snapToPage(screen); 2057 } 2058 2059 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2060 if (hasMovedLayouts) { 2061 // Reparent the view 2062 getParentCellLayoutForView(cell).removeView(cell); 2063 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2064 mDragInfo.spanX, mDragInfo.spanY); 2065 } 2066 2067 // update the item's position after drop 2068 final ItemInfo info = (ItemInfo) cell.getTag(); 2069 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2070 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2071 lp.cellX = mTargetCell[0]; 2072 lp.cellY = mTargetCell[1]; 2073 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2074 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2075 2076 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2077 cell instanceof LauncherAppWidgetHostView) { 2078 final CellLayout cellLayout = dropTargetLayout; 2079 // We post this call so that the widget has a chance to be placed 2080 // in its final location 2081 2082 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2083 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2084 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2085 final Runnable resizeRunnable = new Runnable() { 2086 public void run() { 2087 DragLayer dragLayer = mLauncher.getDragLayer(); 2088 dragLayer.addResizeFrame(info, hostView, cellLayout); 2089 } 2090 }; 2091 post(new Runnable() { 2092 public void run() { 2093 if (!isPageMoving()) { 2094 resizeRunnable.run(); 2095 } else { 2096 mDelayedResizeRunnable = resizeRunnable; 2097 } 2098 } 2099 }); 2100 } 2101 } 2102 2103 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2104 lp.cellY); 2105 } 2106 } 2107 2108 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2109 2110 // Prepare it to be animated into its new position 2111 // This must be called after the view has been re-parented 2112 final Runnable disableHardwareLayersRunnable = new Runnable() { 2113 @Override 2114 public void run() { 2115 mAnimatingViewIntoPlace = false; 2116 updateChildrenLayersEnabled(); 2117 } 2118 }; 2119 mAnimatingViewIntoPlace = true; 2120 if (d.dragView.hasDrawn()) { 2121 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2122 setFinalScrollForPageChange(snapScreen); 2123 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2124 disableHardwareLayersRunnable); 2125 resetFinalScrollForPageChange(snapScreen); 2126 } else { 2127 cell.setVisibility(VISIBLE); 2128 } 2129 parent.onDropChild(cell); 2130 } 2131 } 2132 2133 public void setFinalScrollForPageChange(int screen) { 2134 if (screen >= 0) { 2135 mSavedScrollX = getScrollX(); 2136 CellLayout cl = (CellLayout) getChildAt(screen); 2137 mSavedTranslationX = cl.getTranslationX(); 2138 mSavedRotationY = cl.getRotationY(); 2139 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2140 setScrollX(newX); 2141 cl.setTranslationX(0f); 2142 cl.setRotationY(0f); 2143 } 2144 } 2145 2146 public void resetFinalScrollForPageChange(int screen) { 2147 if (screen >= 0) { 2148 CellLayout cl = (CellLayout) getChildAt(screen); 2149 setScrollX(mSavedScrollX); 2150 cl.setTranslationX(mSavedTranslationX); 2151 cl.setRotationY(mSavedRotationY); 2152 } 2153 } 2154 2155 public void getViewLocationRelativeToSelf(View v, int[] location) { 2156 getLocationInWindow(location); 2157 int x = location[0]; 2158 int y = location[1]; 2159 2160 v.getLocationInWindow(location); 2161 int vX = location[0]; 2162 int vY = location[1]; 2163 2164 location[0] = vX - x; 2165 location[1] = vY - y; 2166 } 2167 2168 public void onDragEnter(DragObject d) { 2169 if (mDragTargetLayout != null) { 2170 mDragTargetLayout.setIsDragOverlapping(false); 2171 mDragTargetLayout.onDragExit(); 2172 } 2173 mDragTargetLayout = getCurrentDropLayout(); 2174 mDragTargetLayout.setIsDragOverlapping(true); 2175 mDragTargetLayout.onDragEnter(); 2176 2177 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2178 // don't need to show the outlines 2179 if (LauncherApplication.isScreenLarge()) { 2180 showOutlines(); 2181 } 2182 } 2183 2184 private void doDragExit(DragObject d) { 2185 // Clean up folders 2186 cleanupFolderCreation(d); 2187 2188 // Reset the scroll area and previous drag target 2189 onResetScrollArea(); 2190 2191 if (mDragTargetLayout != null) { 2192 mDragTargetLayout.setIsDragOverlapping(false); 2193 mDragTargetLayout.onDragExit(); 2194 } 2195 mLastDragOverView = null; 2196 2197 if (!mIsPageMoving) { 2198 hideOutlines(); 2199 } 2200 } 2201 2202 public void onDragExit(DragObject d) { 2203 doDragExit(d); 2204 } 2205 2206 public DropTarget getDropTargetDelegate(DragObject d) { 2207 return null; 2208 } 2209 2210 /** 2211 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2212 * in the returned structure related to the widgets that match the drop (or a null list if it is 2213 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2214 */ 2215 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2216 final LauncherModel model = mLauncher.getModel(); 2217 final ClipDescription desc = event.getClipDescription(); 2218 final int mimeTypeCount = desc.getMimeTypeCount(); 2219 for (int i = 0; i < mimeTypeCount; ++i) { 2220 final String mimeType = desc.getMimeType(i); 2221 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2222 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2223 } else { 2224 final List<WidgetMimeTypeHandlerData> widgets = 2225 model.resolveWidgetsForMimeType(mContext, mimeType); 2226 if (widgets.size() > 0) { 2227 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2228 } 2229 } 2230 } 2231 return null; 2232 } 2233 2234 /** 2235 * Global drag and drop handler 2236 */ 2237 @Override 2238 public boolean onDragEvent(DragEvent event) { 2239 final ClipDescription desc = event.getClipDescription(); 2240 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2241 final int[] pos = new int[2]; 2242 layout.getLocationOnScreen(pos); 2243 // We need to offset the drag coordinates to layout coordinate space 2244 final int x = (int) event.getX() - pos[0]; 2245 final int y = (int) event.getY() - pos[1]; 2246 2247 switch (event.getAction()) { 2248 case DragEvent.ACTION_DRAG_STARTED: { 2249 // Validate this drag 2250 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2251 if (test != null) { 2252 boolean isShortcut = (test.second == null); 2253 if (isShortcut) { 2254 // Check if we have enough space on this screen to add a new shortcut 2255 if (!layout.findCellForSpan(pos, 1, 1)) { 2256 mLauncher.showOutOfSpaceMessage(); 2257 return false; 2258 } 2259 } 2260 } else { 2261 // Show error message if we couldn't accept any of the items 2262 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2263 Toast.LENGTH_SHORT).show(); 2264 return false; 2265 } 2266 2267 // Create the drag outline 2268 // We need to add extra padding to the bitmap to make room for the glow effect 2269 final Canvas canvas = new Canvas(); 2270 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2271 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2272 2273 // Show the current page outlines to indicate that we can accept this drop 2274 showOutlines(); 2275 layout.setIsDragOccuring(true); 2276 layout.onDragEnter(); 2277 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2278 2279 return true; 2280 } 2281 case DragEvent.ACTION_DRAG_LOCATION: 2282 // Visualize the drop location 2283 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2284 return true; 2285 case DragEvent.ACTION_DROP: { 2286 // Try and add any shortcuts 2287 final LauncherModel model = mLauncher.getModel(); 2288 final ClipData data = event.getClipData(); 2289 2290 // We assume that the mime types are ordered in descending importance of 2291 // representation. So we enumerate the list of mime types and alert the 2292 // user if any widgets can handle the drop. Only the most preferred 2293 // representation will be handled. 2294 pos[0] = x; 2295 pos[1] = y; 2296 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2297 if (test != null) { 2298 final int index = test.first; 2299 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2300 final boolean isShortcut = (widgets == null); 2301 final String mimeType = desc.getMimeType(index); 2302 if (isShortcut) { 2303 final Intent intent = data.getItemAt(index).getIntent(); 2304 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2305 onDropExternal(new int[] { x, y }, info, layout, false); 2306 } else { 2307 if (widgets.size() == 1) { 2308 // If there is only one item, then go ahead and add and configure 2309 // that widget 2310 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2311 final PendingAddWidgetInfo createInfo = 2312 new PendingAddWidgetInfo(widgetInfo, mimeType, data, "11"); 2313 mLauncher.addAppWidgetFromDrop(createInfo, 2314 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2315 } else { 2316 // Show the widget picker dialog if there is more than one widget 2317 // that can handle this data type 2318 final InstallWidgetReceiver.WidgetListAdapter adapter = 2319 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2320 data, widgets, layout, mCurrentPage, pos); 2321 final AlertDialog.Builder builder = 2322 new AlertDialog.Builder(mContext); 2323 builder.setAdapter(adapter, adapter); 2324 builder.setCancelable(true); 2325 builder.setTitle(mContext.getString( 2326 R.string.external_drop_widget_pick_title)); 2327 builder.setIcon(R.drawable.ic_no_applications); 2328 builder.show(); 2329 } 2330 } 2331 } 2332 return true; 2333 } 2334 case DragEvent.ACTION_DRAG_ENDED: 2335 // Hide the page outlines after the drop 2336 layout.setIsDragOccuring(false); 2337 layout.onDragExit(); 2338 hideOutlines(); 2339 return true; 2340 } 2341 return super.onDragEvent(event); 2342 } 2343 2344 /* 2345 * 2346 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2347 * coordinate space. The argument xy is modified with the return result. 2348 * 2349 */ 2350 void mapPointFromSelfToChild(View v, float[] xy) { 2351 mapPointFromSelfToChild(v, xy, null); 2352 } 2353 2354 /* 2355 * 2356 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2357 * coordinate space. The argument xy is modified with the return result. 2358 * 2359 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2360 * computing it itself; we use this to avoid redundant matrix inversions in 2361 * findMatchingPageForDragOver 2362 * 2363 */ 2364 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2365 if (cachedInverseMatrix == null) { 2366 v.getMatrix().invert(mTempInverseMatrix); 2367 cachedInverseMatrix = mTempInverseMatrix; 2368 } 2369 xy[0] = xy[0] + mScrollX - v.getLeft(); 2370 xy[1] = xy[1] + mScrollY - v.getTop(); 2371 cachedInverseMatrix.mapPoints(xy); 2372 } 2373 2374 /* 2375 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2376 * covers the full screen) 2377 */ 2378 void mapPointFromSelfToSibling(View v, float[] xy) { 2379 xy[0] = xy[0] - v.getLeft(); 2380 xy[1] = xy[1] - v.getTop(); 2381 } 2382 2383 /* 2384 * 2385 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2386 * the parent View's coordinate space. The argument xy is modified with the return result. 2387 * 2388 */ 2389 void mapPointFromChildToSelf(View v, float[] xy) { 2390 v.getMatrix().mapPoints(xy); 2391 xy[0] -= (mScrollX - v.getLeft()); 2392 xy[1] -= (mScrollY - v.getTop()); 2393 } 2394 2395 static private float squaredDistance(float[] point1, float[] point2) { 2396 float distanceX = point1[0] - point2[0]; 2397 float distanceY = point2[1] - point2[1]; 2398 return distanceX * distanceX + distanceY * distanceY; 2399 } 2400 2401 /* 2402 * 2403 * Returns true if the passed CellLayout cl overlaps with dragView 2404 * 2405 */ 2406 boolean overlaps(CellLayout cl, DragView dragView, 2407 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2408 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2409 final float[] draggedItemTopLeft = mTempDragCoordinates; 2410 draggedItemTopLeft[0] = dragViewX; 2411 draggedItemTopLeft[1] = dragViewY; 2412 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2413 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2414 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2415 2416 // Transform the dragged item's top left coordinates 2417 // to the CellLayout's local coordinates 2418 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2419 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2420 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2421 2422 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2423 // Transform the dragged item's bottom right coordinates 2424 // to the CellLayout's local coordinates 2425 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2426 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2427 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2428 2429 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2430 float overlap = (overlapRegionRight - overlapRegionLeft) * 2431 (overlapRegionBottom - overlapRegionTop); 2432 if (overlap > 0) { 2433 return true; 2434 } 2435 } 2436 } 2437 return false; 2438 } 2439 2440 /* 2441 * 2442 * This method returns the CellLayout that is currently being dragged to. In order to drag 2443 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2444 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2445 * 2446 * Return null if no CellLayout is currently being dragged over 2447 * 2448 */ 2449 private CellLayout findMatchingPageForDragOver( 2450 DragView dragView, float originX, float originY, boolean exact) { 2451 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2452 // with the item being dragged and then choose the one that's closest to the touch point 2453 final int screenCount = getChildCount(); 2454 CellLayout bestMatchingScreen = null; 2455 float smallestDistSoFar = Float.MAX_VALUE; 2456 2457 for (int i = 0; i < screenCount; i++) { 2458 CellLayout cl = (CellLayout) getChildAt(i); 2459 2460 final float[] touchXy = {originX, originY}; 2461 // Transform the touch coordinates to the CellLayout's local coordinates 2462 // If the touch point is within the bounds of the cell layout, we can return immediately 2463 cl.getMatrix().invert(mTempInverseMatrix); 2464 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2465 2466 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2467 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2468 return cl; 2469 } 2470 2471 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2472 // Get the center of the cell layout in screen coordinates 2473 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2474 cellLayoutCenter[0] = cl.getWidth()/2; 2475 cellLayoutCenter[1] = cl.getHeight()/2; 2476 mapPointFromChildToSelf(cl, cellLayoutCenter); 2477 2478 touchXy[0] = originX; 2479 touchXy[1] = originY; 2480 2481 // Calculate the distance between the center of the CellLayout 2482 // and the touch point 2483 float dist = squaredDistance(touchXy, cellLayoutCenter); 2484 2485 if (dist < smallestDistSoFar) { 2486 smallestDistSoFar = dist; 2487 bestMatchingScreen = cl; 2488 } 2489 } 2490 } 2491 return bestMatchingScreen; 2492 } 2493 2494 // This is used to compute the visual center of the dragView. This point is then 2495 // used to visualize drop locations and determine where to drop an item. The idea is that 2496 // the visual center represents the user's interpretation of where the item is, and hence 2497 // is the appropriate point to use when determining drop location. 2498 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2499 DragView dragView, float[] recycle) { 2500 float res[]; 2501 if (recycle == null) { 2502 res = new float[2]; 2503 } else { 2504 res = recycle; 2505 } 2506 2507 // First off, the drag view has been shifted in a way that is not represented in the 2508 // x and y values or the x/yOffsets. Here we account for that shift. 2509 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2510 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2511 2512 // These represent the visual top and left of drag view if a dragRect was provided. 2513 // If a dragRect was not provided, then they correspond to the actual view left and 2514 // top, as the dragRect is in that case taken to be the entire dragView. 2515 // R.dimen.dragViewOffsetY. 2516 int left = x - xOffset; 2517 int top = y - yOffset; 2518 2519 // In order to find the visual center, we shift by half the dragRect 2520 res[0] = left + dragView.getDragRegion().width() / 2; 2521 res[1] = top + dragView.getDragRegion().height() / 2; 2522 2523 return res; 2524 } 2525 2526 private boolean isDragWidget(DragObject d) { 2527 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2528 d.dragInfo instanceof PendingAddWidgetInfo); 2529 } 2530 private boolean isExternalDragWidget(DragObject d) { 2531 return d.dragSource != this && isDragWidget(d); 2532 } 2533 2534 public void onDragOver(DragObject d) { 2535 // Skip drag over events while we are dragging over side pages 2536 if (mInScrollArea) return; 2537 if (mIsSwitchingState) return; 2538 2539 Rect r = new Rect(); 2540 CellLayout layout = null; 2541 ItemInfo item = (ItemInfo) d.dragInfo; 2542 2543 // Ensure that we have proper spans for the item that we are dropping 2544 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2545 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2546 d.dragView, mDragViewVisualCenter); 2547 2548 // Identify whether we have dragged over a side page 2549 if (isSmall()) { 2550 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2551 mLauncher.getHotseat().getHitRect(r); 2552 if (r.contains(d.x, d.y)) { 2553 layout = mLauncher.getHotseat().getLayout(); 2554 } 2555 } 2556 if (layout == null) { 2557 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, true); 2558 } 2559 if (layout != mDragTargetLayout) { 2560 // Cancel all intermediate folder states 2561 cleanupFolderCreation(d); 2562 2563 if (mDragTargetLayout != null) { 2564 mDragTargetLayout.setIsDragOverlapping(false); 2565 mDragTargetLayout.onDragExit(); 2566 } 2567 mDragTargetLayout = layout; 2568 if (mDragTargetLayout != null) { 2569 mDragTargetLayout.setIsDragOverlapping(true); 2570 mDragTargetLayout.onDragEnter(); 2571 } else { 2572 mLastDragOverView = null; 2573 } 2574 2575 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2576 if (isInSpringLoadedMode) { 2577 if (mLauncher.isHotseatLayout(layout)) { 2578 mSpringLoadedDragController.cancel(); 2579 } else { 2580 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2581 } 2582 } 2583 } 2584 } else { 2585 // Test to see if we are over the hotseat otherwise just use the current page 2586 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2587 mLauncher.getHotseat().getHitRect(r); 2588 if (r.contains(d.x, d.y)) { 2589 layout = mLauncher.getHotseat().getLayout(); 2590 } 2591 } 2592 if (layout == null) { 2593 layout = getCurrentDropLayout(); 2594 } 2595 if (layout != mDragTargetLayout) { 2596 if (mDragTargetLayout != null) { 2597 mDragTargetLayout.setIsDragOverlapping(false); 2598 mDragTargetLayout.onDragExit(); 2599 } 2600 mDragTargetLayout = layout; 2601 mDragTargetLayout.setIsDragOverlapping(true); 2602 mDragTargetLayout.onDragEnter(); 2603 } 2604 } 2605 2606 // Handle the drag over 2607 if (mDragTargetLayout != null) { 2608 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2609 2610 // We want the point to be mapped to the dragTarget. 2611 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2612 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2613 } else { 2614 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2615 } 2616 ItemInfo info = (ItemInfo) d.dragInfo; 2617 2618 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2619 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2620 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2621 mTargetCell[1]); 2622 2623 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2624 mTargetCell, false); 2625 boolean isOverFolder = dragOverView instanceof FolderIcon; 2626 if (dragOverView != mLastDragOverView) { 2627 cancelFolderCreation(); 2628 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2629 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2630 } 2631 } 2632 2633 if (userFolderPending && dragOverView != mLastDragOverView) { 2634 mFolderCreationAlarm.setOnAlarmListener(new 2635 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2636 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2637 } 2638 2639 if (dragOverView != mLastDragOverView && isOverFolder) { 2640 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2641 if (mDragTargetLayout != null) { 2642 mDragTargetLayout.clearDragOutlines(); 2643 } 2644 } 2645 mLastDragOverView = dragOverView; 2646 2647 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2648 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2649 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2650 item.spanX, item.spanY); 2651 } 2652 } 2653 } 2654 2655 private void cleanupFolderCreation(DragObject d) { 2656 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2657 mDragFolderRingAnimator.animateToNaturalState(); 2658 } 2659 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2660 if (d != null) { 2661 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2662 } 2663 } 2664 mFolderCreationAlarm.cancelAlarm(); 2665 } 2666 2667 private void cancelFolderCreation() { 2668 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2669 mDragFolderRingAnimator.animateToNaturalState(); 2670 } 2671 mCreateUserFolderOnDrop = false; 2672 mFolderCreationAlarm.cancelAlarm(); 2673 } 2674 2675 class FolderCreationAlarmListener implements OnAlarmListener { 2676 CellLayout layout; 2677 int cellX; 2678 int cellY; 2679 2680 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2681 this.layout = layout; 2682 this.cellX = cellX; 2683 this.cellY = cellY; 2684 } 2685 2686 public void onAlarm(Alarm alarm) { 2687 if (mDragFolderRingAnimator == null) { 2688 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2689 } 2690 mDragFolderRingAnimator.setCell(cellX, cellY); 2691 mDragFolderRingAnimator.setCellLayout(layout); 2692 mDragFolderRingAnimator.animateToAcceptState(); 2693 layout.showFolderAccept(mDragFolderRingAnimator); 2694 layout.clearDragOutlines(); 2695 mCreateUserFolderOnDrop = true; 2696 } 2697 } 2698 2699 @Override 2700 public void getHitRect(Rect outRect) { 2701 // We want the workspace to have the whole area of the display (it will find the correct 2702 // cell layout to drop to in the existing drag/drop logic. 2703 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2704 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2705 } 2706 2707 /** 2708 * Add the item specified by dragInfo to the given layout. 2709 * @return true if successful 2710 */ 2711 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2712 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2713 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2714 return true; 2715 } 2716 mLauncher.showOutOfSpaceMessage(); 2717 return false; 2718 } 2719 2720 private void onDropExternal(int[] touchXY, Object dragInfo, 2721 CellLayout cellLayout, boolean insertAtFirst) { 2722 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2723 } 2724 2725 /** 2726 * Drop an item that didn't originate on one of the workspace screens. 2727 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2728 * come from another app altogether. 2729 * 2730 * NOTE: This can also be called when we are outside of a drag event, when we want 2731 * to add an item to one of the workspace screens. 2732 */ 2733 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2734 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2735 final Runnable exitSpringLoadedRunnable = new Runnable() { 2736 @Override 2737 public void run() { 2738 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2739 } 2740 }; 2741 2742 ItemInfo info = (ItemInfo) dragInfo; 2743 int spanX = info.spanX; 2744 int spanY = info.spanY; 2745 if (mDragInfo != null) { 2746 spanX = mDragInfo.spanX; 2747 spanY = mDragInfo.spanY; 2748 } 2749 2750 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2751 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2752 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2753 final int screen = indexOfChild(cellLayout); 2754 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2755 && mState != State.SPRING_LOADED) { 2756 snapToPage(screen); 2757 } 2758 2759 if (info instanceof PendingAddItemInfo) { 2760 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2761 2762 boolean findNearestVacantCell = true; 2763 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2764 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2765 cellLayout, mTargetCell); 2766 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2767 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2768 mDragTargetLayout, mTargetCell)) { 2769 findNearestVacantCell = false; 2770 } 2771 } 2772 if (findNearestVacantCell) { 2773 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2774 cellLayout, mTargetCell); 2775 } 2776 2777 Runnable onAnimationCompleteRunnable = new Runnable() { 2778 @Override 2779 public void run() { 2780 // When dragging and dropping from customization tray, we deal with creating 2781 // widgets/shortcuts/folders in a slightly different way 2782 switch (pendingInfo.itemType) { 2783 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2784 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2785 container, screen, mTargetCell, null); 2786 break; 2787 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2788 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2789 container, screen, mTargetCell, null); 2790 break; 2791 default: 2792 throw new IllegalStateException("Unknown item type: " + 2793 pendingInfo.itemType); 2794 } 2795 cellLayout.onDragExit(); 2796 } 2797 }; 2798 2799 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2800 // location and size on the home screen. 2801 int loc[] = new int[2]; 2802 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 2803 2804 RectF r = new RectF(); 2805 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 2806 setFinalTransitionTransform(cellLayout); 2807 float cellLayoutScale = 2808 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2809 resetTransitionTransform(cellLayout); 2810 2811 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 2812 // The animation will scale the dragView about its center, so we need to center about 2813 // the final location. 2814 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2815 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2816 2817 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2818 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2819 } else { 2820 // This is for other drag/drop cases, like dragging from All Apps 2821 View view = null; 2822 2823 switch (info.itemType) { 2824 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2825 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2826 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2827 // Came from all apps -- make a copy 2828 info = new ShortcutInfo((ApplicationInfo) info, "12"); 2829 } 2830 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2831 (ShortcutInfo) info); 2832 break; 2833 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2834 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2835 (FolderInfo) info, mIconCache); 2836 break; 2837 default: 2838 throw new IllegalStateException("Unknown item type: " + info.itemType); 2839 } 2840 2841 // First we find the cell nearest to point at which the item is 2842 // dropped, without any consideration to whether there is an item there. 2843 if (touchXY != null) { 2844 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2845 cellLayout, mTargetCell); 2846 d.postAnimationRunnable = exitSpringLoadedRunnable; 2847 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2848 d.dragView, d.postAnimationRunnable)) { 2849 return; 2850 } 2851 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2852 return; 2853 } 2854 } 2855 2856 if (touchXY != null) { 2857 // when dragging and dropping, just find the closest free spot 2858 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2859 cellLayout, mTargetCell); 2860 } else { 2861 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2862 } 2863 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2864 info.spanY, insertAtFirst); 2865 cellLayout.onDropChild(view); 2866 cellLayout.animateDrop(); 2867 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2868 cellLayout.getChildrenLayout().measureChild(view); 2869 2870 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2871 lp.cellX, lp.cellY); 2872 2873 if (d.dragView != null) { 2874 // We wrap the animation call in the temporary set and reset of the current 2875 // cellLayout to its final transform -- this means we animate the drag view to 2876 // the correct final location. 2877 setFinalTransitionTransform(cellLayout); 2878 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2879 exitSpringLoadedRunnable); 2880 resetTransitionTransform(cellLayout); 2881 } 2882 } 2883 } 2884 2885 public void setFinalTransitionTransform(CellLayout layout) { 2886 if (isSwitchingState()) { 2887 int index = indexOfChild(layout); 2888 mCurrentScaleX = layout.getScaleX(); 2889 mCurrentScaleY = layout.getScaleY(); 2890 mCurrentTranslationX = layout.getTranslationX(); 2891 mCurrentTranslationY = layout.getTranslationY(); 2892 mCurrentRotationY = layout.getRotationY(); 2893 layout.setScaleX(mNewScaleXs[index]); 2894 layout.setScaleY(mNewScaleYs[index]); 2895 layout.setTranslationX(mNewTranslationXs[index]); 2896 layout.setTranslationY(mNewTranslationYs[index]); 2897 layout.setRotationY(mNewRotationYs[index]); 2898 } 2899 } 2900 public void resetTransitionTransform(CellLayout layout) { 2901 if (isSwitchingState()) { 2902 mCurrentScaleX = layout.getScaleX(); 2903 mCurrentScaleY = layout.getScaleY(); 2904 mCurrentTranslationX = layout.getTranslationX(); 2905 mCurrentTranslationY = layout.getTranslationY(); 2906 mCurrentRotationY = layout.getRotationY(); 2907 layout.setScaleX(mCurrentScaleX); 2908 layout.setScaleY(mCurrentScaleY); 2909 layout.setTranslationX(mCurrentTranslationX); 2910 layout.setTranslationY(mCurrentTranslationY); 2911 layout.setRotationY(mCurrentRotationY); 2912 } 2913 } 2914 2915 /** 2916 * Return the current {@link CellLayout}, correctly picking the destination 2917 * screen while a scroll is in progress. 2918 */ 2919 public CellLayout getCurrentDropLayout() { 2920 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2921 } 2922 2923 /** 2924 * Return the current CellInfo describing our current drag; this method exists 2925 * so that Launcher can sync this object with the correct info when the activity is created/ 2926 * destroyed 2927 * 2928 */ 2929 public CellLayout.CellInfo getDragInfo() { 2930 return mDragInfo; 2931 } 2932 2933 /** 2934 * Calculate the nearest cell where the given object would be dropped. 2935 * 2936 * pixelX and pixelY should be in the coordinate system of layout 2937 */ 2938 private int[] findNearestVacantArea(int pixelX, int pixelY, 2939 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2940 return layout.findNearestVacantArea( 2941 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 2942 } 2943 2944 /** 2945 * Calculate the nearest cell where the given object would be dropped. 2946 * 2947 * pixelX and pixelY should be in the coordinate system of layout 2948 */ 2949 private int[] findNearestArea(int pixelX, int pixelY, 2950 int spanX, int spanY, CellLayout layout, int[] recycle) { 2951 return layout.findNearestArea( 2952 pixelX, pixelY, spanX, spanY, recycle); 2953 } 2954 2955 void setup(Launcher launcher, DragController dragController) { 2956 mLauncher = launcher; 2957 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2958 mDragController = dragController; 2959 2960 // hardware layers on children are enabled on startup, but should be disabled until 2961 // needed 2962 updateChildrenLayersEnabled(); 2963 setWallpaperDimension(); 2964 } 2965 2966 /** 2967 * Called at the end of a drag which originated on the workspace. 2968 */ 2969 public void onDropCompleted(View target, DragObject d, boolean success) { 2970 if (success) { 2971 if (target != this) { 2972 if (mDragInfo != null) { 2973 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2974 if (mDragInfo.cell instanceof DropTarget) { 2975 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 2976 } 2977 } 2978 } 2979 } else if (mDragInfo != null) { 2980 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2981 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2982 // moved into DragController.cancelDrag(). 2983 doDragExit(null); 2984 CellLayout cellLayout; 2985 if (mLauncher.isHotseatLayout(target)) { 2986 cellLayout = mLauncher.getHotseat().getLayout(); 2987 } else { 2988 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2989 } 2990 cellLayout.onDropChild(mDragInfo.cell); 2991 } 2992 mDragOutline = null; 2993 mDragInfo = null; 2994 } 2995 2996 public boolean isDropEnabled() { 2997 return true; 2998 } 2999 3000 @Override 3001 protected void onRestoreInstanceState(Parcelable state) { 3002 super.onRestoreInstanceState(state); 3003 Launcher.setScreen(mCurrentPage); 3004 } 3005 3006 @Override 3007 public void scrollLeft() { 3008 if (!isSmall() && !mIsSwitchingState) { 3009 super.scrollLeft(); 3010 } 3011 Folder openFolder = getOpenFolder(); 3012 if (openFolder != null) { 3013 openFolder.completeDragExit(); 3014 } 3015 } 3016 3017 @Override 3018 public void scrollRight() { 3019 if (!isSmall() && !mIsSwitchingState) { 3020 super.scrollRight(); 3021 } 3022 Folder openFolder = getOpenFolder(); 3023 if (openFolder != null) { 3024 openFolder.completeDragExit(); 3025 } 3026 } 3027 3028 @Override 3029 public void onEnterScrollArea(int x, int y, int direction) { 3030 // Ignore the scroll area if we are dragging over the hot seat 3031 if (mLauncher.getHotseat() != null) { 3032 Rect r = new Rect(); 3033 mLauncher.getHotseat().getHitRect(r); 3034 if (r.contains(x, y)) { 3035 return; 3036 } 3037 } 3038 3039 if (!isSmall() && !mIsSwitchingState) { 3040 mInScrollArea = true; 3041 3042 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3043 final CellLayout layout = (CellLayout) getChildAt(page); 3044 cancelFolderCreation(); 3045 3046 if (layout != null) { 3047 // Exit the current layout and mark the overlapping layout 3048 if (mDragTargetLayout != null) { 3049 mDragTargetLayout.setIsDragOverlapping(false); 3050 mDragTargetLayout.onDragExit(); 3051 } 3052 mDragTargetLayout = layout; 3053 mDragTargetLayout.setIsDragOverlapping(true); 3054 3055 // Workspace is responsible for drawing the edge glow on adjacent pages, 3056 // so we need to redraw the workspace when this may have changed. 3057 invalidate(); 3058 } 3059 } 3060 } 3061 3062 @Override 3063 public void onExitScrollArea() { 3064 if (mInScrollArea) { 3065 if (mDragTargetLayout != null) { 3066 // Unmark the overlapping layout and re-enter the current layout 3067 mDragTargetLayout.setIsDragOverlapping(false); 3068 mDragTargetLayout = getCurrentDropLayout(); 3069 mDragTargetLayout.onDragEnter(); 3070 3071 // Workspace is responsible for drawing the edge glow on adjacent pages, 3072 // so we need to redraw the workspace when this may have changed. 3073 invalidate(); 3074 } 3075 mInScrollArea = false; 3076 } 3077 } 3078 3079 private void onResetScrollArea() { 3080 if (mDragTargetLayout != null) { 3081 // Unmark the overlapping layout 3082 mDragTargetLayout.setIsDragOverlapping(false); 3083 3084 // Workspace is responsible for drawing the edge glow on adjacent pages, 3085 // so we need to redraw the workspace when this may have changed. 3086 invalidate(); 3087 } 3088 mInScrollArea = false; 3089 } 3090 3091 /** 3092 * Returns a specific CellLayout 3093 */ 3094 CellLayout getParentCellLayoutForView(View v) { 3095 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3096 for (CellLayout layout : layouts) { 3097 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3098 return layout; 3099 } 3100 } 3101 return null; 3102 } 3103 3104 /** 3105 * Returns a list of all the CellLayouts in the workspace. 3106 */ 3107 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3108 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3109 int screenCount = getChildCount(); 3110 for (int screen = 0; screen < screenCount; screen++) { 3111 layouts.add(((CellLayout) getChildAt(screen))); 3112 } 3113 if (mLauncher.getHotseat() != null) { 3114 layouts.add(mLauncher.getHotseat().getLayout()); 3115 } 3116 return layouts; 3117 } 3118 3119 /** 3120 * We should only use this to search for specific children. Do not use this method to modify 3121 * CellLayoutChildren directly. 3122 */ 3123 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3124 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3125 int screenCount = getChildCount(); 3126 for (int screen = 0; screen < screenCount; screen++) { 3127 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3128 } 3129 if (mLauncher.getHotseat() != null) { 3130 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3131 } 3132 return childrenLayouts; 3133 } 3134 3135 public Folder getFolderForTag(Object tag) { 3136 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3137 for (CellLayoutChildren layout: childrenLayouts) { 3138 int count = layout.getChildCount(); 3139 for (int i = 0; i < count; i++) { 3140 View child = layout.getChildAt(i); 3141 if (child instanceof Folder) { 3142 Folder f = (Folder) child; 3143 if (f.getInfo() == tag && f.getInfo().opened) { 3144 return f; 3145 } 3146 } 3147 } 3148 } 3149 return null; 3150 } 3151 3152 public View getViewForTag(Object tag) { 3153 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3154 for (CellLayoutChildren layout: childrenLayouts) { 3155 int count = layout.getChildCount(); 3156 for (int i = 0; i < count; i++) { 3157 View child = layout.getChildAt(i); 3158 if (child.getTag() == tag) { 3159 return child; 3160 } 3161 } 3162 } 3163 return null; 3164 } 3165 3166 void clearDropTargets() { 3167 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3168 for (CellLayoutChildren layout: childrenLayouts) { 3169 int childCount = layout.getChildCount(); 3170 for (int j = 0; j < childCount; j++) { 3171 View v = layout.getChildAt(j); 3172 if (v instanceof DropTarget) { 3173 mDragController.removeDropTarget((DropTarget) v); 3174 } 3175 } 3176 } 3177 } 3178 3179 void removeItems(final ArrayList<ApplicationInfo> apps) { 3180 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3181 3182 final HashSet<String> packageNames = new HashSet<String>(); 3183 final int appCount = apps.size(); 3184 for (int i = 0; i < appCount; i++) { 3185 packageNames.add(apps.get(i).componentName.getPackageName()); 3186 } 3187 3188 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3189 for (final CellLayout layoutParent: cellLayouts) { 3190 final ViewGroup layout = layoutParent.getChildrenLayout(); 3191 3192 // Avoid ANRs by treating each screen separately 3193 post(new Runnable() { 3194 public void run() { 3195 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3196 childrenToRemove.clear(); 3197 3198 int childCount = layout.getChildCount(); 3199 for (int j = 0; j < childCount; j++) { 3200 final View view = layout.getChildAt(j); 3201 Object tag = view.getTag(); 3202 3203 if (tag instanceof ShortcutInfo) { 3204 final ShortcutInfo info = (ShortcutInfo) tag; 3205 final Intent intent = info.intent; 3206 final ComponentName name = intent.getComponent(); 3207 3208 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3209 for (String packageName: packageNames) { 3210 if (packageName.equals(name.getPackageName())) { 3211 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3212 childrenToRemove.add(view); 3213 } 3214 } 3215 } 3216 } else if (tag instanceof FolderInfo) { 3217 final FolderInfo info = (FolderInfo) tag; 3218 final ArrayList<ShortcutInfo> contents = info.contents; 3219 final int contentsCount = contents.size(); 3220 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3221 new ArrayList<ShortcutInfo>(); 3222 3223 for (int k = 0; k < contentsCount; k++) { 3224 final ShortcutInfo appInfo = contents.get(k); 3225 final Intent intent = appInfo.intent; 3226 final ComponentName name = intent.getComponent(); 3227 3228 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3229 for (String packageName: packageNames) { 3230 if (packageName.equals(name.getPackageName())) { 3231 appsToRemoveFromFolder.add(appInfo); 3232 } 3233 } 3234 } 3235 } 3236 for (ShortcutInfo item: appsToRemoveFromFolder) { 3237 info.remove(item); 3238 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3239 } 3240 } else if (tag instanceof LauncherAppWidgetInfo) { 3241 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3242 final AppWidgetProviderInfo provider = 3243 widgets.getAppWidgetInfo(info.appWidgetId); 3244 if (provider != null) { 3245 for (String packageName: packageNames) { 3246 if (packageName.equals(provider.provider.getPackageName())) { 3247 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3248 childrenToRemove.add(view); 3249 } 3250 } 3251 } 3252 } 3253 } 3254 3255 childCount = childrenToRemove.size(); 3256 for (int j = 0; j < childCount; j++) { 3257 View child = childrenToRemove.get(j); 3258 // Note: We can not remove the view directly from CellLayoutChildren as this 3259 // does not re-mark the spaces as unoccupied. 3260 layoutParent.removeViewInLayout(child); 3261 if (child instanceof DropTarget) { 3262 mDragController.removeDropTarget((DropTarget)child); 3263 } 3264 } 3265 3266 if (childCount > 0) { 3267 layout.requestLayout(); 3268 layout.invalidate(); 3269 } 3270 } 3271 }); 3272 } 3273 } 3274 3275 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3276 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3277 for (CellLayoutChildren layout: childrenLayouts) { 3278 int childCount = layout.getChildCount(); 3279 for (int j = 0; j < childCount; j++) { 3280 final View view = layout.getChildAt(j); 3281 Object tag = view.getTag(); 3282 if (tag instanceof ShortcutInfo) { 3283 ShortcutInfo info = (ShortcutInfo)tag; 3284 // We need to check for ACTION_MAIN otherwise getComponent() might 3285 // return null for some shortcuts (for instance, for shortcuts to 3286 // web pages.) 3287 final Intent intent = info.intent; 3288 final ComponentName name = intent.getComponent(); 3289 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3290 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3291 final int appCount = apps.size(); 3292 for (int k = 0; k < appCount; k++) { 3293 ApplicationInfo app = apps.get(k); 3294 if (app.componentName.equals(name)) { 3295 info.setIcon(mIconCache.getIcon(info.intent)); 3296 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3297 new FastBitmapDrawable(info.getIcon(mIconCache)), 3298 null, null); 3299 } 3300 } 3301 } 3302 } 3303 } 3304 } 3305 } 3306 3307 void moveToDefaultScreen(boolean animate) { 3308 if (!isSmall()) { 3309 if (animate) { 3310 snapToPage(mDefaultPage); 3311 } else { 3312 setCurrentPage(mDefaultPage); 3313 } 3314 } 3315 getChildAt(mDefaultPage).requestFocus(); 3316 } 3317 3318 @Override 3319 public void syncPages() { 3320 } 3321 3322 @Override 3323 public void syncPageItems(int page, boolean immediate) { 3324 } 3325 3326 @Override 3327 protected String getCurrentPageDescription() { 3328 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3329 return String.format(mContext.getString(R.string.workspace_scroll_format), 3330 page + 1, getChildCount()); 3331 } 3332 3333 public void getLocationInDragLayer(int[] loc) { 3334 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3335 } 3336 3337 /** 3338 * Return true because we want the scrolling indicator to stretch to fit the space. 3339 */ 3340 protected boolean hasElasticScrollIndicator() { 3341 return true; 3342 } 3343 3344 void showDockDivider(boolean immediately) { 3345 final ViewGroup parent = (ViewGroup) getParent(); 3346 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3347 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3348 if (qsbDivider != null && dockDivider != null) { 3349 qsbDivider.setVisibility(View.VISIBLE); 3350 dockDivider.setVisibility(View.VISIBLE); 3351 if (mDividerAnimator != null) { 3352 mDividerAnimator.cancel(); 3353 mDividerAnimator = null; 3354 } 3355 if (immediately) { 3356 qsbDivider.setAlpha(1f); 3357 dockDivider.setAlpha(1f); 3358 } else { 3359 mDividerAnimator = new AnimatorSet(); 3360 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3361 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3362 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3363 mDividerAnimator.start(); 3364 } 3365 } 3366 } 3367 3368 void hideDockDivider(boolean immediately) { 3369 final ViewGroup parent = (ViewGroup) getParent(); 3370 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3371 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3372 if (qsbDivider != null && dockDivider != null) { 3373 if (mDividerAnimator != null) { 3374 mDividerAnimator.cancel(); 3375 mDividerAnimator = null; 3376 } 3377 if (immediately) { 3378 qsbDivider.setVisibility(View.GONE); 3379 dockDivider.setVisibility(View.GONE); 3380 qsbDivider.setAlpha(0f); 3381 dockDivider.setAlpha(0f); 3382 } else { 3383 mDividerAnimator = new AnimatorSet(); 3384 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3385 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3386 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3387 private boolean cancelled = false; 3388 @Override 3389 public void onAnimationCancel(android.animation.Animator animation) { 3390 cancelled = true; 3391 } 3392 @Override 3393 public void onAnimationEnd(android.animation.Animator animation) { 3394 if (!cancelled) { 3395 qsbDivider.setVisibility(View.GONE); 3396 dockDivider.setVisibility(View.GONE); 3397 } 3398 } 3399 }); 3400 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3401 mDividerAnimator.start(); 3402 } 3403 } 3404 } 3405} 3406