Workspace.java revision b5ba097015c4794fa822f30b38a60a7070a00097
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 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 86 87 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 88 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 89 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 90 91 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 92 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 93 94 // These animators are used to fade the children's outlines 95 private ObjectAnimator mChildrenOutlineFadeInAnimation; 96 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 97 private float mChildrenOutlineAlpha = 0; 98 99 // These properties refer to the background protection gradient used for AllApps and Customize 100 private ValueAnimator mBackgroundFadeInAnimation; 101 private ValueAnimator mBackgroundFadeOutAnimation; 102 private Drawable mBackground; 103 boolean mDrawBackground = true; 104 private float mBackgroundAlpha = 0; 105 private float mOverScrollMaxBackgroundAlpha = 0.0f; 106 private int mOverScrollPageIndex = -1; 107 private AnimatorSet mDividerAnimator; 108 109 private float mWallpaperScrollRatio = 1.0f; 110 111 private final WallpaperManager mWallpaperManager; 112 private IBinder mWindowToken; 113 114 private int mDefaultPage; 115 116 /** 117 * CellInfo for the cell that is currently being dragged 118 */ 119 private CellLayout.CellInfo mDragInfo; 120 121 /** 122 * Target drop area calculated during last acceptDrop call. 123 */ 124 private int[] mTargetCell = new int[2]; 125 126 /** 127 * The CellLayout that is currently being dragged over 128 */ 129 private CellLayout mDragTargetLayout = null; 130 131 private Launcher mLauncher; 132 private IconCache mIconCache; 133 private DragController mDragController; 134 135 // These are temporary variables to prevent having to allocate a new object just to 136 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 137 private int[] mTempCell = new int[2]; 138 private int[] mTempEstimate = new int[2]; 139 private float[] mDragViewVisualCenter = new float[2]; 140 private float[] mTempDragCoordinates = new float[2]; 141 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 142 private float[] mTempDragBottomRightCoordinates = new float[2]; 143 private Matrix mTempInverseMatrix = new Matrix(); 144 145 private SpringLoadedDragController mSpringLoadedDragController; 146 private float mSpringLoadedShrinkFactor; 147 148 private static final int DEFAULT_CELL_COUNT_X = 4; 149 private static final int DEFAULT_CELL_COUNT_Y = 4; 150 151 // State variable that indicates whether the pages are small (ie when you're 152 // in all apps or customize mode) 153 154 enum State { NORMAL, SPRING_LOADED, SMALL }; 155 private State mState = State.NORMAL; 156 private boolean mIsSwitchingState = false; 157 private boolean mSwitchStateAfterFirstLayout = false; 158 private State mStateAfterFirstLayout; 159 160 private AnimatorSet mAnimator; 161 private AnimatorListener mChangeStateAnimationListener; 162 163 boolean mAnimatingViewIntoPlace = false; 164 boolean mIsDragOccuring = false; 165 boolean mChildrenLayersEnabled = true; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 171 private Bitmap mDragOutline = null; 172 private final Rect mTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 private int mDragViewMultiplyColor; 175 176 // Paint used to draw external drop outline 177 private final Paint mExternalDragOutlinePaint = new Paint(); 178 179 // Camera and Matrix used to determine the final position of a neighboring CellLayout 180 private final Matrix mMatrix = new Matrix(); 181 private final Camera mCamera = new Camera(); 182 private final float mTempFloat2[] = new float[2]; 183 184 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 185 int mWallpaperWidth; 186 int mWallpaperHeight; 187 WallpaperOffsetInterpolator mWallpaperOffset; 188 boolean mUpdateWallpaperOffsetImmediately = false; 189 private Runnable mDelayedResizeRunnable; 190 191 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 192 private static final int FOLDER_CREATION_TIMEOUT = 250; 193 private final Alarm mFolderCreationAlarm = new Alarm(); 194 private FolderRingAnimator mDragFolderRingAnimator = null; 195 private View mLastDragOverView = null; 196 private boolean mCreateUserFolderOnDrop = false; 197 198 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 199 private float mXDown; 200 private float mYDown; 201 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 202 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 203 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 204 205 // These variables are used for storing the initial and final values during workspace animations 206 private int mSavedScrollX; 207 private float mSavedRotationY; 208 private float mSavedTranslationX; 209 private float mCurrentScaleX; 210 private float mCurrentScaleY; 211 private float mCurrentRotationY; 212 private float mCurrentTranslationX; 213 private float mCurrentTranslationY; 214 private float[] mOldTranslationXs; 215 private float[] mOldTranslationYs; 216 private float[] mOldScaleXs; 217 private float[] mOldScaleYs; 218 private float[] mOldBackgroundAlphas; 219 private float[] mOldBackgroundAlphaMultipliers; 220 private float[] mOldAlphas; 221 private float[] mOldRotationYs; 222 private float[] mNewTranslationXs; 223 private float[] mNewTranslationYs; 224 private float[] mNewScaleXs; 225 private float[] mNewScaleYs; 226 private float[] mNewBackgroundAlphas; 227 private float[] mNewBackgroundAlphaMultipliers; 228 private float[] mNewAlphas; 229 private float[] mNewRotationYs; 230 private float mTransitionProgress; 231 232 /** 233 * Used to inflate the Workspace from XML. 234 * 235 * @param context The application's context. 236 * @param attrs The attributes set containing the Workspace's customization values. 237 */ 238 public Workspace(Context context, AttributeSet attrs) { 239 this(context, attrs, 0); 240 } 241 242 /** 243 * Used to inflate the Workspace from XML. 244 * 245 * @param context The application's context. 246 * @param attrs The attributes set containing the Workspace's customization values. 247 * @param defStyle Unused. 248 */ 249 public Workspace(Context context, AttributeSet attrs, int defStyle) { 250 super(context, attrs, defStyle); 251 mContentIsRefreshable = false; 252 253 // With workspace, data is available straight from the get-go 254 setDataIsReady(); 255 256 mFadeInAdjacentScreens = 257 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 258 mWallpaperManager = WallpaperManager.getInstance(context); 259 260 int cellCountX = DEFAULT_CELL_COUNT_X; 261 int cellCountY = DEFAULT_CELL_COUNT_Y; 262 263 TypedArray a = context.obtainStyledAttributes(attrs, 264 R.styleable.Workspace, defStyle, 0); 265 266 final Resources res = context.getResources(); 267 if (LauncherApplication.isScreenLarge()) { 268 // Determine number of rows/columns dynamically 269 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 270 // Around that ratio we should make cells the same size in portrait and 271 // landscape 272 TypedArray actionBarSizeTypedArray = 273 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 274 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 275 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 276 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 277 278 cellCountX = 1; 279 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 280 cellCountX++; 281 } 282 283 cellCountY = 1; 284 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 285 <= smallestScreenDim - systemBarHeight) { 286 cellCountY++; 287 } 288 } 289 290 mSpringLoadedShrinkFactor = 291 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 292 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 293 294 // if the value is manually specified, use that instead 295 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 296 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 297 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 298 a.recycle(); 299 300 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 301 setHapticFeedbackEnabled(false); 302 303 initWorkspace(); 304 305 // Disable multitouch across the workspace/all apps/customize tray 306 setMotionEventSplittingEnabled(true); 307 } 308 309 public void onDragStart(DragSource source, Object info, int dragAction) { 310 mIsDragOccuring = true; 311 updateChildrenLayersEnabled(); 312 mLauncher.lockScreenOrientation(); 313 } 314 315 public void onDragEnd() { 316 mIsDragOccuring = false; 317 updateChildrenLayersEnabled(); 318 mLauncher.unlockScreenOrientation(); 319 } 320 321 /** 322 * Initializes various states for this workspace. 323 */ 324 protected void initWorkspace() { 325 Context context = getContext(); 326 mCurrentPage = mDefaultPage; 327 Launcher.setScreen(mCurrentPage); 328 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 329 mIconCache = app.getIconCache(); 330 mExternalDragOutlinePaint.setAntiAlias(true); 331 setWillNotDraw(false); 332 setChildrenDrawnWithCacheEnabled(true); 333 334 try { 335 final Resources res = getResources(); 336 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 337 } catch (Resources.NotFoundException e) { 338 // In this case, we will skip drawing background protection 339 } 340 341 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 342 @Override 343 public void onAnimationStart(Animator animation) { 344 mIsSwitchingState = true; 345 } 346 347 @Override 348 public void onAnimationEnd(Animator animation) { 349 mIsSwitchingState = false; 350 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 351 mAnimator = null; 352 updateChildrenLayersEnabled(); 353 } 354 }; 355 356 mSnapVelocity = 600; 357 mWallpaperOffset = new WallpaperOffsetInterpolator(); 358 } 359 360 @Override 361 protected int getScrollMode() { 362 return SmoothPagedView.X_LARGE_MODE; 363 } 364 365 @Override 366 protected void onViewAdded(View child) { 367 super.onViewAdded(child); 368 if (!(child instanceof CellLayout)) { 369 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 370 } 371 CellLayout cl = ((CellLayout) child); 372 cl.setOnInterceptTouchListener(this); 373 cl.setClickable(true); 374 cl.enableHardwareLayers(); 375 } 376 377 /** 378 * @return The open folder on the current screen, or null if there is none 379 */ 380 Folder getOpenFolder() { 381 DragLayer dragLayer = mLauncher.getDragLayer(); 382 int count = dragLayer.getChildCount(); 383 for (int i = 0; i < count; i++) { 384 View child = dragLayer.getChildAt(i); 385 if (child instanceof Folder) { 386 Folder folder = (Folder) child; 387 if (folder.getInfo().opened) 388 return folder; 389 } 390 } 391 return null; 392 } 393 394 boolean isTouchActive() { 395 return mTouchState != TOUCH_STATE_REST; 396 } 397 398 /** 399 * Adds the specified child in the specified screen. The position and dimension of 400 * the child are defined by x, y, spanX and spanY. 401 * 402 * @param child The child to add in one of the workspace's screens. 403 * @param screen The screen in which to add the child. 404 * @param x The X position of the child in the screen's grid. 405 * @param y The Y position of the child in the screen's grid. 406 * @param spanX The number of cells spanned horizontally by the child. 407 * @param spanY The number of cells spanned vertically by the child. 408 */ 409 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 410 addInScreen(child, container, screen, x, y, spanX, spanY, false); 411 } 412 413 /** 414 * Adds the specified child in the specified screen. The position and dimension of 415 * the child are defined by x, y, spanX and spanY. 416 * 417 * @param child The child to add in one of the workspace's screens. 418 * @param screen The screen in which to add the child. 419 * @param x The X position of the child in the screen's grid. 420 * @param y The Y position of the child in the screen's grid. 421 * @param spanX The number of cells spanned horizontally by the child. 422 * @param spanY The number of cells spanned vertically by the child. 423 * @param insert When true, the child is inserted at the beginning of the children list. 424 */ 425 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 426 boolean insert) { 427 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 428 if (screen < 0 || screen >= getChildCount()) { 429 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 430 + " (was " + screen + "); skipping child"); 431 return; 432 } 433 } 434 435 final CellLayout layout; 436 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 437 layout = mLauncher.getHotseat().getLayout(); 438 child.setOnKeyListener(null); 439 440 // Hide folder title in the hotseat 441 if (child instanceof FolderIcon) { 442 ((FolderIcon) child).setTextVisible(false); 443 } 444 445 if (screen < 0) { 446 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 447 } else { 448 // Note: We do this to ensure that the hotseat is always laid out in the orientation 449 // of the hotseat in order regardless of which orientation they were added 450 x = mLauncher.getHotseat().getCellXFromOrder(screen); 451 y = mLauncher.getHotseat().getCellYFromOrder(screen); 452 } 453 } else { 454 // Show folder title if not in the hotseat 455 if (child instanceof FolderIcon) { 456 ((FolderIcon) child).setTextVisible(true); 457 } 458 459 layout = (CellLayout) getChildAt(screen); 460 child.setOnKeyListener(new BubbleTextViewKeyEventListener()); 461 } 462 463 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 464 if (lp == null) { 465 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 466 } else { 467 lp.cellX = x; 468 lp.cellY = y; 469 lp.cellHSpan = spanX; 470 lp.cellVSpan = spanY; 471 } 472 473 if (spanX < 0 && spanY < 0) { 474 lp.isLockedToGrid = false; 475 } 476 477 // Get the canonical child id to uniquely represent this view in this screen 478 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 479 boolean markCellsAsOccupied = !(child instanceof Folder); 480 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 481 // TODO: This branch occurs when the workspace is adding views 482 // outside of the defined grid 483 // maybe we should be deleting these items from the LauncherModel? 484 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 485 } 486 487 if (!(child instanceof Folder)) { 488 child.setHapticFeedbackEnabled(false); 489 child.setOnLongClickListener(mLongClickListener); 490 } 491 if (child instanceof DropTarget) { 492 mDragController.addDropTarget((DropTarget) child); 493 } 494 } 495 496 /** 497 * Check if the point (x, y) hits a given page. 498 */ 499 private boolean hitsPage(int index, float x, float y) { 500 final View page = getChildAt(index); 501 if (page != null) { 502 float[] localXY = { x, y }; 503 mapPointFromSelfToChild(page, localXY); 504 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 505 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 506 } 507 return false; 508 } 509 510 @Override 511 protected boolean hitsPreviousPage(float x, float y) { 512 // mNextPage is set to INVALID_PAGE whenever we are stationary. 513 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 514 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 515 return hitsPage(current - 1, x, y); 516 } 517 518 @Override 519 protected boolean hitsNextPage(float x, float y) { 520 // mNextPage is set to INVALID_PAGE whenever we are stationary. 521 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 522 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 523 return hitsPage(current + 1, x, y); 524 } 525 526 /** 527 * Called directly from a CellLayout (not by the framework), after we've been added as a 528 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 529 * that it should intercept touch events, which is not something that is normally supported. 530 */ 531 @Override 532 public boolean onTouch(View v, MotionEvent event) { 533 return (isSmall() || mIsSwitchingState); 534 } 535 536 public boolean isSwitchingState() { 537 return mIsSwitchingState; 538 } 539 540 protected void onWindowVisibilityChanged (int visibility) { 541 mLauncher.onWindowVisibilityChanged(visibility); 542 } 543 544 @Override 545 public boolean dispatchUnhandledMove(View focused, int direction) { 546 if (isSmall() || mIsSwitchingState) { 547 // when the home screens are shrunken, shouldn't allow side-scrolling 548 return false; 549 } 550 return super.dispatchUnhandledMove(focused, direction); 551 } 552 553 @Override 554 public boolean onInterceptTouchEvent(MotionEvent ev) { 555 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 556 case MotionEvent.ACTION_DOWN: 557 mXDown = ev.getX(); 558 mYDown = ev.getY(); 559 break; 560 case MotionEvent.ACTION_POINTER_UP: 561 case MotionEvent.ACTION_UP: 562 if (mTouchState == TOUCH_STATE_REST) { 563 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 564 if (!currentPage.lastDownOnOccupiedCell()) { 565 onWallpaperTap(ev); 566 } 567 } 568 } 569 return super.onInterceptTouchEvent(ev); 570 } 571 572 @Override 573 protected void determineScrollingStart(MotionEvent ev) { 574 if (!isSmall() && !mIsSwitchingState) { 575 float deltaX = Math.abs(ev.getX() - mXDown); 576 float deltaY = Math.abs(ev.getY() - mYDown); 577 578 if (Float.compare(deltaX, 0f) == 0) return; 579 580 float slope = deltaY / deltaX; 581 float theta = (float) Math.atan(slope); 582 583 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 584 cancelCurrentPageLongPress(); 585 } 586 587 if (theta > MAX_SWIPE_ANGLE) { 588 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 589 return; 590 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 591 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 592 // increase the touch slop to make it harder to begin scrolling the workspace. This 593 // results in vertically scrolling widgets to more easily. The higher the angle, the 594 // more we increase touch slop. 595 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 596 float extraRatio = (float) 597 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 598 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 599 } else { 600 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 601 super.determineScrollingStart(ev); 602 } 603 } 604 } 605 606 @Override 607 protected boolean isScrollingIndicatorEnabled() { 608 return mState != State.SPRING_LOADED; 609 } 610 611 protected void onPageBeginMoving() { 612 super.onPageBeginMoving(); 613 614 if (isHardwareAccelerated()) { 615 updateChildrenLayersEnabled(); 616 } else { 617 if (mNextPage != INVALID_PAGE) { 618 // we're snapping to a particular screen 619 enableChildrenCache(mCurrentPage, mNextPage); 620 } else { 621 // this is when user is actively dragging a particular screen, they might 622 // swipe it either left or right (but we won't advance by more than one screen) 623 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 624 } 625 } 626 627 // Only show page outlines as we pan if we are on large screen 628 if (LauncherApplication.isScreenLarge()) { 629 showOutlines(); 630 } 631 } 632 633 protected void onPageEndMoving() { 634 super.onPageEndMoving(); 635 636 if (isHardwareAccelerated()) { 637 updateChildrenLayersEnabled(); 638 } else { 639 clearChildrenCache(); 640 } 641 642 // Hide the outlines, as long as we're not dragging 643 if (!mDragController.dragging()) { 644 // Only hide page outlines as we pan if we are on large screen 645 if (LauncherApplication.isScreenLarge()) { 646 hideOutlines(); 647 } 648 } 649 mOverScrollMaxBackgroundAlpha = 0.0f; 650 mOverScrollPageIndex = -1; 651 652 if (mDelayedResizeRunnable != null) { 653 mDelayedResizeRunnable.run(); 654 mDelayedResizeRunnable = null; 655 } 656 } 657 658 @Override 659 protected void notifyPageSwitchListener() { 660 super.notifyPageSwitchListener(); 661 Launcher.setScreen(mCurrentPage); 662 }; 663 664 // As a ratio of screen height, the total distance we want the parallax effect to span 665 // vertically 666 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 667 return 1.1f; 668 } 669 670 // As a ratio of screen height, the total distance we want the parallax effect to span 671 // horizontally 672 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 673 float aspectRatio = width / (float) height; 674 675 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 676 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 677 // We will use these two data points to extrapolate how much the wallpaper parallax effect 678 // to span (ie travel) at any aspect ratio: 679 680 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 681 final float ASPECT_RATIO_PORTRAIT = 10/16f; 682 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 683 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 684 685 // To find out the desired width at different aspect ratios, we use the following two 686 // formulas, where the coefficient on x is the aspect ratio (width/height): 687 // (16/10)x + y = 1.5 688 // (10/16)x + y = 1.2 689 // We solve for x and y and end up with a final formula: 690 final float x = 691 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 692 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 693 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 694 return x * aspectRatio + y; 695 } 696 697 // The range of scroll values for Workspace 698 private int getScrollRange() { 699 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 700 } 701 702 protected void setWallpaperDimension() { 703 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 704 DisplayMetrics displayMetrics = new DisplayMetrics(); 705 display.getRealMetrics(displayMetrics); 706 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 707 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 708 709 // We need to ensure that there is enough extra space in the wallpaper for the intended 710 // parallax effects 711 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 712 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 713 new Thread("setWallpaperDimension") { 714 public void run() { 715 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 716 } 717 }.start(); 718 } 719 720 public void setVerticalWallpaperOffset(float offset) { 721 mWallpaperOffset.setFinalY(offset); 722 } 723 public float getVerticalWallpaperOffset() { 724 return mWallpaperOffset.getCurrY(); 725 } 726 public void setHorizontalWallpaperOffset(float offset) { 727 mWallpaperOffset.setFinalX(offset); 728 } 729 public float getHorizontalWallpaperOffset() { 730 return mWallpaperOffset.getCurrX(); 731 } 732 733 private float wallpaperOffsetForCurrentScroll() { 734 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 735 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 736 // The wallpaper travel width is how far, from left to right, the wallpaper will move 737 // at this orientation (for example, in portrait mode we don't move all the way to the 738 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 739 int wallpaperTravelWidth = (int) (display.getWidth() * 740 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 741 if (!isStaticWallpaper) { 742 wallpaperTravelWidth = mWallpaperWidth; 743 } 744 745 // Set wallpaper offset steps (1 / (number of screens - 1)) 746 // We have 3 vertical offset states (centered, and then top/bottom aligned 747 // for all apps/customize) 748 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 749 750 // For the purposes of computing the scrollRange and overScrollOffset, we ignore 751 // assume that mLayoutScale is 1. This means that when we're in spring-loaded mode, 752 // there's no discrepancy between the wallpaper offset for a given page. 753 float layoutScale = mLayoutScale; 754 mLayoutScale = 1f; 755 int scrollRange = getScrollRange(); 756 float scrollProgressOffset = 0; 757 758 // Account for over scroll: you only see the absolute edge of the wallpaper if 759 // you over scroll as far as you can in landscape mode. Only do this for static wallpapers 760 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 761 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 762 if (isStaticWallpaper) { 763 int overScrollOffset = (int) (maxOverScroll() * display.getWidth()); 764 scrollProgressOffset += overScrollOffset / (float) getScrollRange(); 765 scrollRange += 2 * overScrollOffset; 766 } 767 768 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 769 boolean overScrollWallpaper = LauncherApplication.isScreenLarge(); 770 float adjustedScrollX = overScrollWallpaper ? 771 mScrollX : Math.max(0, Math.min(mScrollX, mMaxScrollX)); 772 adjustedScrollX *= mWallpaperScrollRatio; 773 mLayoutScale = layoutScale; 774 775 float scrollProgress = 776 adjustedScrollX / (float) scrollRange + scrollProgressOffset; 777 float offsetInDips = wallpaperTravelWidth * scrollProgress + 778 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 779 float offset = offsetInDips / (float) mWallpaperWidth; 780 return offset; 781 } 782 private void syncWallpaperOffsetWithScroll() { 783 final boolean enableWallpaperEffects = isHardwareAccelerated(); 784 if (enableWallpaperEffects) { 785 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 786 } 787 } 788 789 public void updateWallpaperOffsetImmediately() { 790 mUpdateWallpaperOffsetImmediately = true; 791 } 792 793 private void updateWallpaperOffsets() { 794 boolean updateNow = false; 795 boolean keepUpdating = true; 796 if (mUpdateWallpaperOffsetImmediately) { 797 updateNow = true; 798 keepUpdating = false; 799 mWallpaperOffset.jumpToFinal(); 800 mUpdateWallpaperOffsetImmediately = false; 801 } else { 802 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 803 } 804 if (updateNow) { 805 if (mWindowToken != null) { 806 mWallpaperManager.setWallpaperOffsets(mWindowToken, 807 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 808 } 809 } 810 if (keepUpdating) { 811 fastInvalidate(); 812 } 813 } 814 815 @Override 816 protected void updateCurrentPageScroll() { 817 super.updateCurrentPageScroll(); 818 computeWallpaperScrollRatio(mCurrentPage); 819 } 820 821 @Override 822 protected void snapToPage(int whichPage) { 823 super.snapToPage(whichPage); 824 computeWallpaperScrollRatio(whichPage); 825 } 826 827 private void computeWallpaperScrollRatio(int page) { 828 // Here, we determine what the desired scroll would be with and without a layout scale, 829 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 830 // as though there is no layout scale. 831 float layoutScale = mLayoutScale; 832 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 833 mLayoutScale = 1.0f; 834 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 835 mLayoutScale = layoutScale; 836 if (scaled > 0) { 837 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 838 } else { 839 mWallpaperScrollRatio = 1f; 840 } 841 } 842 843 class WallpaperOffsetInterpolator { 844 float mFinalHorizontalWallpaperOffset = 0.0f; 845 float mFinalVerticalWallpaperOffset = 0.5f; 846 float mHorizontalWallpaperOffset = 0.0f; 847 float mVerticalWallpaperOffset = 0.5f; 848 long mLastWallpaperOffsetUpdateTime; 849 boolean mIsMovingFast; 850 boolean mOverrideHorizontalCatchupConstant; 851 float mHorizontalCatchupConstant = 0.35f; 852 float mVerticalCatchupConstant = 0.35f; 853 854 public WallpaperOffsetInterpolator() { 855 } 856 857 public void setOverrideHorizontalCatchupConstant(boolean override) { 858 mOverrideHorizontalCatchupConstant = override; 859 } 860 861 public void setHorizontalCatchupConstant(float f) { 862 mHorizontalCatchupConstant = f; 863 } 864 865 public void setVerticalCatchupConstant(float f) { 866 mVerticalCatchupConstant = f; 867 } 868 869 public boolean computeScrollOffset() { 870 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 871 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 872 mIsMovingFast = false; 873 return false; 874 } 875 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 876 boolean isLandscape = display.getWidth() > display.getHeight(); 877 878 long currentTime = System.currentTimeMillis(); 879 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 880 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 881 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 882 883 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 884 if (!mIsMovingFast && xdiff > 0.07) { 885 mIsMovingFast = true; 886 } 887 888 float fractionToCatchUpIn1MsHorizontal; 889 if (mOverrideHorizontalCatchupConstant) { 890 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 891 } else if (mIsMovingFast) { 892 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 893 } else { 894 // slow 895 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 896 } 897 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 898 899 fractionToCatchUpIn1MsHorizontal /= 33f; 900 fractionToCatchUpIn1MsVertical /= 33f; 901 902 final float UPDATE_THRESHOLD = 0.00001f; 903 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 904 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 905 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 906 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 907 if (jumpToFinalValue) { 908 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 909 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 910 } else { 911 float percentToCatchUpVertical = 912 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 913 float percentToCatchUpHorizontal = 914 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 915 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 916 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 917 } 918 919 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 920 return true; 921 } 922 923 public float getCurrX() { 924 return mHorizontalWallpaperOffset; 925 } 926 927 public float getFinalX() { 928 return mFinalHorizontalWallpaperOffset; 929 } 930 931 public float getCurrY() { 932 return mVerticalWallpaperOffset; 933 } 934 935 public float getFinalY() { 936 return mFinalVerticalWallpaperOffset; 937 } 938 939 public void setFinalX(float x) { 940 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 941 } 942 943 public void setFinalY(float y) { 944 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 945 } 946 947 public void jumpToFinal() { 948 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 949 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 950 } 951 } 952 953 @Override 954 public void computeScroll() { 955 super.computeScroll(); 956 syncWallpaperOffsetWithScroll(); 957 } 958 959 void showOutlines() { 960 if (!isSmall() && !mIsSwitchingState) { 961 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 962 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 963 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 964 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 965 mChildrenOutlineFadeInAnimation.start(); 966 } 967 } 968 969 void hideOutlines() { 970 if (!isSmall() && !mIsSwitchingState) { 971 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 972 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 973 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 974 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 975 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 976 mChildrenOutlineFadeOutAnimation.start(); 977 } 978 } 979 980 public void showOutlinesTemporarily() { 981 if (!mIsPageMoving && !isTouchActive()) { 982 snapToPage(mCurrentPage); 983 } 984 } 985 986 public void setChildrenOutlineAlpha(float alpha) { 987 mChildrenOutlineAlpha = alpha; 988 for (int i = 0; i < getChildCount(); i++) { 989 CellLayout cl = (CellLayout) getChildAt(i); 990 cl.setBackgroundAlpha(alpha); 991 } 992 } 993 994 public float getChildrenOutlineAlpha() { 995 return mChildrenOutlineAlpha; 996 } 997 998 void disableBackground() { 999 mDrawBackground = false; 1000 } 1001 void enableBackground() { 1002 mDrawBackground = true; 1003 } 1004 1005 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1006 if (mBackground == null) return; 1007 if (mBackgroundFadeInAnimation != null) { 1008 mBackgroundFadeInAnimation.cancel(); 1009 mBackgroundFadeInAnimation = null; 1010 } 1011 if (mBackgroundFadeOutAnimation != null) { 1012 mBackgroundFadeOutAnimation.cancel(); 1013 mBackgroundFadeOutAnimation = null; 1014 } 1015 float startAlpha = getBackgroundAlpha(); 1016 if (finalAlpha != startAlpha) { 1017 if (animated) { 1018 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1019 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1020 public void onAnimationUpdate(ValueAnimator animation) { 1021 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1022 } 1023 }); 1024 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1025 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1026 mBackgroundFadeOutAnimation.start(); 1027 } else { 1028 setBackgroundAlpha(finalAlpha); 1029 } 1030 } 1031 } 1032 1033 public void setBackgroundAlpha(float alpha) { 1034 if (alpha != mBackgroundAlpha) { 1035 mBackgroundAlpha = alpha; 1036 invalidate(); 1037 } 1038 } 1039 1040 public float getBackgroundAlpha() { 1041 return mBackgroundAlpha; 1042 } 1043 1044 /** 1045 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1046 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1047 * as being larger. This method computes what offset the rotated view should be translated 1048 * in order to minimize this perceived gap. 1049 * @param degrees Angle of the view 1050 * @param width Width of the view 1051 * @param height Height of the view 1052 * @return Offset to be used in a View.setTranslationX() call 1053 */ 1054 private float getOffsetXForRotation(float degrees, int width, int height) { 1055 mMatrix.reset(); 1056 mCamera.save(); 1057 mCamera.rotateY(Math.abs(degrees)); 1058 mCamera.getMatrix(mMatrix); 1059 mCamera.restore(); 1060 1061 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1062 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1063 mTempFloat2[0] = width; 1064 mTempFloat2[1] = height; 1065 mMatrix.mapPoints(mTempFloat2); 1066 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1067 } 1068 1069 float backgroundAlphaInterpolator(float r) { 1070 float pivotA = 0.1f; 1071 float pivotB = 0.4f; 1072 if (r < pivotA) { 1073 return 0; 1074 } else if (r > pivotB) { 1075 return 1.0f; 1076 } else { 1077 return (r - pivotA)/(pivotB - pivotA); 1078 } 1079 } 1080 1081 float overScrollBackgroundAlphaInterpolator(float r) { 1082 float threshold = 0.08f; 1083 1084 if (r > mOverScrollMaxBackgroundAlpha) { 1085 mOverScrollMaxBackgroundAlpha = r; 1086 } else if (r < mOverScrollMaxBackgroundAlpha) { 1087 r = mOverScrollMaxBackgroundAlpha; 1088 } 1089 1090 return Math.min(r / threshold, 1.0f); 1091 } 1092 1093 private void screenScrolledLargeUI(int screenCenter) { 1094 for (int i = 0; i < getChildCount(); i++) { 1095 CellLayout cl = (CellLayout) getChildAt(i); 1096 if (cl != null) { 1097 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1098 float rotation = WORKSPACE_ROTATION * scrollProgress; 1099 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1100 1101 // If the current page (i) is being over scrolled, we use a different 1102 // set of rules for setting the background alpha multiplier. 1103 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1104 i == getChildCount() -1 )) { 1105 cl.setBackgroundAlphaMultiplier( 1106 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1107 mOverScrollPageIndex = i; 1108 } else if (mOverScrollPageIndex != i) { 1109 cl.setBackgroundAlphaMultiplier( 1110 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1111 } 1112 1113 cl.setTranslationX(translationX); 1114 cl.setRotationY(rotation); 1115 } 1116 } 1117 } 1118 1119 private void resetCellLayoutTransforms(CellLayout cl, boolean left) { 1120 cl.setTranslationX(0); 1121 cl.setRotationY(0); 1122 cl.setOverScrollAmount(0, left); 1123 cl.setPivotX(cl.getMeasuredWidth() / 2); 1124 cl.setPivotY(cl.getMeasuredHeight() / 2); 1125 } 1126 1127 private void screenScrolledStandardUI(int screenCenter) { 1128 if (mScrollX < 0 || mScrollX > mMaxScrollX) { 1129 int index = mScrollX < 0 ? 0 : getChildCount() - 1; 1130 CellLayout cl = (CellLayout) getChildAt(index); 1131 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1132 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1133 float translationX = index == 0 ? mScrollX : - (mMaxScrollX - mScrollX); 1134 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1135 cl.setCameraDistance(mDensity * 6500); 1136 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1137 cl.setTranslationX(translationX); 1138 cl.setRotationY(rotation); 1139 } else { 1140 resetCellLayoutTransforms((CellLayout) getChildAt(0), true); 1141 resetCellLayoutTransforms((CellLayout) getChildAt(getChildCount() - 1), false); 1142 } 1143 } 1144 1145 @Override 1146 protected void screenScrolled(int screenCenter) { 1147 super.screenScrolled(screenCenter); 1148 if (LauncherApplication.isScreenLarge()) { 1149 screenScrolledLargeUI(screenCenter); 1150 } else { 1151 screenScrolledStandardUI(screenCenter); 1152 } 1153 } 1154 1155 @Override 1156 protected void overScroll(float amount) { 1157 if (LauncherApplication.isScreenLarge()) { 1158 dampedOverScroll(amount); 1159 } else { 1160 acceleratedOverScroll(amount); 1161 } 1162 } 1163 1164 protected void onAttachedToWindow() { 1165 super.onAttachedToWindow(); 1166 mWindowToken = getWindowToken(); 1167 computeScroll(); 1168 mDragController.setWindowToken(mWindowToken); 1169 } 1170 1171 protected void onDetachedFromWindow() { 1172 mWindowToken = null; 1173 } 1174 1175 @Override 1176 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1177 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1178 mUpdateWallpaperOffsetImmediately = true; 1179 } 1180 super.onLayout(changed, left, top, right, bottom); 1181 1182 // if shrinkToBottom() is called on initialization, it has to be deferred 1183 // until after the first call to onLayout so that it has the correct width 1184 if (mSwitchStateAfterFirstLayout) { 1185 mSwitchStateAfterFirstLayout = false; 1186 // shrink can trigger a synchronous onLayout call, so we 1187 // post this to avoid a stack overflow / tangled onLayout calls 1188 post(new Runnable() { 1189 public void run() { 1190 changeState(mStateAfterFirstLayout, false); 1191 } 1192 }); 1193 } 1194 } 1195 1196 @Override 1197 protected void onDraw(Canvas canvas) { 1198 updateWallpaperOffsets(); 1199 1200 // Draw the background gradient if necessary 1201 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1202 int alpha = (int) (mBackgroundAlpha * 255); 1203 mBackground.setAlpha(alpha); 1204 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1205 getMeasuredHeight()); 1206 mBackground.draw(canvas); 1207 } 1208 1209 super.onDraw(canvas); 1210 } 1211 1212 @Override 1213 protected void dispatchDraw(Canvas canvas) { 1214 super.dispatchDraw(canvas); 1215 1216 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1217 final int width = getWidth(); 1218 final int height = getHeight(); 1219 final int pageHeight = getChildAt(0).getHeight(); 1220 1221 // This determines the height of the glowing edge: 90% of the page height 1222 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1223 1224 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1225 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1226 1227 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1228 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1229 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1230 d.draw(canvas); 1231 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1232 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1233 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1234 d.draw(canvas); 1235 } 1236 } 1237 } 1238 1239 @Override 1240 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1241 if (!mLauncher.isAllAppsVisible()) { 1242 final Folder openFolder = getOpenFolder(); 1243 if (openFolder != null) { 1244 return openFolder.requestFocus(direction, previouslyFocusedRect); 1245 } else { 1246 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1247 } 1248 } 1249 return false; 1250 } 1251 1252 @Override 1253 public int getDescendantFocusability() { 1254 if (isSmall()) { 1255 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1256 } 1257 return super.getDescendantFocusability(); 1258 } 1259 1260 @Override 1261 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1262 if (!mLauncher.isAllAppsVisible()) { 1263 final Folder openFolder = getOpenFolder(); 1264 if (openFolder != null) { 1265 openFolder.addFocusables(views, direction); 1266 } else { 1267 super.addFocusables(views, direction, focusableMode); 1268 } 1269 } 1270 } 1271 1272 public boolean isSmall() { 1273 return mState == State.SMALL || mState == State.SPRING_LOADED; 1274 } 1275 1276 void enableChildrenCache(int fromPage, int toPage) { 1277 if (fromPage > toPage) { 1278 final int temp = fromPage; 1279 fromPage = toPage; 1280 toPage = temp; 1281 } 1282 1283 final int screenCount = getChildCount(); 1284 1285 fromPage = Math.max(fromPage, 0); 1286 toPage = Math.min(toPage, screenCount - 1); 1287 1288 for (int i = fromPage; i <= toPage; i++) { 1289 final CellLayout layout = (CellLayout) getChildAt(i); 1290 layout.setChildrenDrawnWithCacheEnabled(true); 1291 layout.setChildrenDrawingCacheEnabled(true); 1292 } 1293 } 1294 1295 void clearChildrenCache() { 1296 final int screenCount = getChildCount(); 1297 for (int i = 0; i < screenCount; i++) { 1298 final CellLayout layout = (CellLayout) getChildAt(i); 1299 layout.setChildrenDrawnWithCacheEnabled(false); 1300 // In software mode, we don't want the items to continue to be drawn into bitmaps 1301 if (!isHardwareAccelerated()) { 1302 layout.setChildrenDrawingCacheEnabled(false); 1303 } 1304 } 1305 } 1306 1307 private void updateChildrenLayersEnabled() { 1308 boolean small = isSmall() || mIsSwitchingState; 1309 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1310 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1311 1312 if (enableChildrenLayers != mChildrenLayersEnabled) { 1313 mChildrenLayersEnabled = enableChildrenLayers; 1314 for (int i = 0; i < getPageCount(); i++) { 1315 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1316 } 1317 } 1318 } 1319 1320 protected void onWallpaperTap(MotionEvent ev) { 1321 final int[] position = mTempCell; 1322 getLocationOnScreen(position); 1323 1324 int pointerIndex = ev.getActionIndex(); 1325 position[0] += (int) ev.getX(pointerIndex); 1326 position[1] += (int) ev.getY(pointerIndex); 1327 1328 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1329 ev.getAction() == MotionEvent.ACTION_UP 1330 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1331 position[0], position[1], 0, null); 1332 } 1333 1334 @Override 1335 protected void updateAdjacentPagesAlpha() { 1336 if (!isSmall()) { 1337 super.updateAdjacentPagesAlpha(); 1338 } 1339 } 1340 1341 /* 1342 * This interpolator emulates the rate at which the perceived scale of an object changes 1343 * as its distance from a camera increases. When this interpolator is applied to a scale 1344 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1345 * from the camera. 1346 */ 1347 static class ZInterpolator implements TimeInterpolator { 1348 private float focalLength; 1349 1350 public ZInterpolator(float foc) { 1351 focalLength = foc; 1352 } 1353 1354 public float getInterpolation(float input) { 1355 return (1.0f - focalLength / (focalLength + input)) / 1356 (1.0f - focalLength / (focalLength + 1.0f)); 1357 } 1358 } 1359 1360 /* 1361 * The exact reverse of ZInterpolator. 1362 */ 1363 static class InverseZInterpolator implements TimeInterpolator { 1364 private ZInterpolator zInterpolator; 1365 public InverseZInterpolator(float foc) { 1366 zInterpolator = new ZInterpolator(foc); 1367 } 1368 public float getInterpolation(float input) { 1369 return 1 - zInterpolator.getInterpolation(1 - input); 1370 } 1371 } 1372 1373 /* 1374 * ZInterpolator compounded with an ease-out. 1375 */ 1376 static class ZoomOutInterpolator implements TimeInterpolator { 1377 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1378 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1379 1380 public float getInterpolation(float input) { 1381 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1382 } 1383 } 1384 1385 /* 1386 * InvereZInterpolator compounded with an ease-out. 1387 */ 1388 static class ZoomInInterpolator implements TimeInterpolator { 1389 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1390 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1391 1392 public float getInterpolation(float input) { 1393 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1394 } 1395 } 1396 1397 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1398 1399 /* 1400 * 1401 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1402 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1403 * 1404 * These methods mark the appropriate pages as accepting drops (which alters their visual 1405 * appearance). 1406 * 1407 */ 1408 public void onDragStartedWithItem(View v) { 1409 final Canvas canvas = new Canvas(); 1410 1411 // We need to add extra padding to the bitmap to make room for the glow effect 1412 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1413 1414 // The outline is used to visualize where the item will land if dropped 1415 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1416 } 1417 1418 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1419 final Canvas canvas = new Canvas(); 1420 1421 // We need to add extra padding to the bitmap to make room for the glow effect 1422 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1423 1424 CellLayout cl = (CellLayout) getChildAt(0); 1425 1426 int[] size = cl.cellSpansToSize(spanX, spanY); 1427 1428 // The outline is used to visualize where the item will land if dropped 1429 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1430 } 1431 1432 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1433 // never dragged over 1434 public void onDragStopped(boolean success) { 1435 // In the success case, DragController has already called onDragExit() 1436 if (!success) { 1437 doDragExit(null); 1438 } 1439 } 1440 1441 public void exitWidgetResizeMode() { 1442 DragLayer dragLayer = mLauncher.getDragLayer(); 1443 dragLayer.clearAllResizeFrames(); 1444 } 1445 1446 private void initAnimationArrays() { 1447 final int childCount = getChildCount(); 1448 if (mOldTranslationXs != null) return; 1449 mOldTranslationXs = new float[childCount]; 1450 mOldTranslationYs = new float[childCount]; 1451 mOldScaleXs = new float[childCount]; 1452 mOldScaleYs = new float[childCount]; 1453 mOldBackgroundAlphas = new float[childCount]; 1454 mOldBackgroundAlphaMultipliers = new float[childCount]; 1455 mOldAlphas = new float[childCount]; 1456 mOldRotationYs = new float[childCount]; 1457 mNewTranslationXs = new float[childCount]; 1458 mNewTranslationYs = new float[childCount]; 1459 mNewScaleXs = new float[childCount]; 1460 mNewScaleYs = new float[childCount]; 1461 mNewBackgroundAlphas = new float[childCount]; 1462 mNewBackgroundAlphaMultipliers = new float[childCount]; 1463 mNewAlphas = new float[childCount]; 1464 mNewRotationYs = new float[childCount]; 1465 } 1466 1467 public void changeState(State shrinkState) { 1468 changeState(shrinkState, true); 1469 } 1470 1471 void changeState(final State state, boolean animated) { 1472 if (mFirstLayout) { 1473 // (mFirstLayout == "first layout has not happened yet") 1474 // cancel any pending shrinks that were set earlier 1475 mSwitchStateAfterFirstLayout = false; 1476 mStateAfterFirstLayout = state; 1477 return; 1478 } 1479 1480 if (mAnimator != null) { 1481 mAnimator.cancel(); 1482 } 1483 1484 // Stop any scrolling, move to the current page right away 1485 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1486 1487 float finalScaleFactor = 1.0f; 1488 float finalBackgroundAlpha = 0.0f; 1489 boolean normalState = false; 1490 State oldState = mState; 1491 mState = state; 1492 boolean zoomIn = true; 1493 1494 if (state != State.NORMAL) { 1495 finalScaleFactor = mSpringLoadedShrinkFactor - (state == State.SMALL ? 0.1f : 0); 1496 finalBackgroundAlpha = 1.0f; 1497 if (oldState == State.NORMAL && state == State.SMALL) { 1498 zoomIn = false; 1499 if (animated) { 1500 hideScrollingIndicator(true); 1501 } 1502 setLayoutScale(finalScaleFactor); 1503 updateChildrenLayersEnabled(); 1504 } else { 1505 setLayoutScale(finalScaleFactor); 1506 } 1507 } else { 1508 setLayoutScale(1.0f); 1509 normalState = true; 1510 } 1511 1512 float translationX = 0; 1513 float translationY = 0; 1514 1515 mAnimator = new AnimatorSet(); 1516 1517 final int screenCount = getChildCount(); 1518 initAnimationArrays(); 1519 1520 final int duration = zoomIn ? 1521 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1522 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1523 for (int i = 0; i < screenCount; i++) { 1524 final CellLayout cl = (CellLayout)getChildAt(i); 1525 float finalAlphaValue = 0f; 1526 float rotation = 0f; 1527 1528 // Set the final alpha depending on whether we are fading side pages. On phone ui, 1529 // we don't do any of the rotation, or the fading alpha in portrait. See the 1530 // ctor and screenScrolled(). 1531 if (mFadeInAdjacentScreens && normalState) { 1532 finalAlphaValue = (i == mCurrentPage) ? 1f : 0f; 1533 } else { 1534 finalAlphaValue = 1f; 1535 } 1536 1537 if (LauncherApplication.isScreenLarge()) { 1538 if (i < mCurrentPage) { 1539 rotation = WORKSPACE_ROTATION; 1540 } else if (i > mCurrentPage) { 1541 rotation = -WORKSPACE_ROTATION; 1542 } 1543 } 1544 1545 float finalAlphaMultiplierValue = 1f; 1546 // If the screen is not xlarge, then don't rotate the CellLayouts 1547 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1548 // pages. see unshrink(). 1549 if (LauncherApplication.isScreenLarge()) { 1550 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1551 } 1552 1553 mOldAlphas[i] = cl.getAlpha(); 1554 mNewAlphas[i] = finalAlphaValue; 1555 if (animated) { 1556 mOldTranslationXs[i] = cl.getTranslationX(); 1557 mOldTranslationYs[i] = cl.getTranslationY(); 1558 mOldScaleXs[i] = cl.getScaleX(); 1559 mOldScaleYs[i] = cl.getScaleY(); 1560 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1561 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1562 mOldRotationYs[i] = cl.getRotationY(); 1563 1564 mNewTranslationXs[i] = translationX; 1565 mNewTranslationYs[i] = translationY; 1566 mNewScaleXs[i] = finalScaleFactor; 1567 mNewScaleYs[i] = finalScaleFactor; 1568 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1569 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1570 mNewRotationYs[i] = rotation; 1571 } else { 1572 cl.setTranslationX(translationX); 1573 cl.setTranslationY(translationY); 1574 cl.setScaleX(finalScaleFactor); 1575 cl.setScaleY(finalScaleFactor); 1576 cl.setBackgroundAlpha(0.0f); 1577 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1578 cl.setAlpha(finalAlphaValue); 1579 cl.setRotationY(rotation); 1580 mChangeStateAnimationListener.onAnimationEnd(null); 1581 } 1582 } 1583 1584 if (animated) { 1585 ValueAnimator animWithInterpolator = 1586 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1587 1588 if (zoomIn) { 1589 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1590 } 1591 1592 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1593 public void onAnimationUpdate(float a, float b) { 1594 mTransitionProgress = b; 1595 if (b == 0f) { 1596 // an optimization, but not required 1597 return; 1598 } 1599 invalidate(); 1600 for (int i = 0; i < screenCount; i++) { 1601 final CellLayout cl = (CellLayout) getChildAt(i); 1602 cl.fastInvalidate(); 1603 cl.setFastTranslationX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1604 cl.setFastTranslationY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1605 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1606 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1607 cl.setFastBackgroundAlpha( 1608 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1609 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1610 b * mNewBackgroundAlphaMultipliers[i]); 1611 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1612 } 1613 } 1614 }); 1615 1616 ValueAnimator rotationAnim = 1617 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1618 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1619 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1620 public void onAnimationUpdate(float a, float b) { 1621 if (b == 0f) { 1622 // an optimization, but not required 1623 return; 1624 } 1625 for (int i = 0; i < screenCount; i++) { 1626 final CellLayout cl = (CellLayout) getChildAt(i); 1627 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1628 } 1629 } 1630 }); 1631 1632 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1633 // If we call this when we're not animated, onAnimationEnd is never called on 1634 // the listener; make sure we only use the listener when we're actually animating 1635 mAnimator.addListener(mChangeStateAnimationListener); 1636 mAnimator.start(); 1637 } 1638 1639 if (state == State.SPRING_LOADED) { 1640 // Right now we're covered by Apps Customize 1641 // Show the background gradient immediately, so the gradient will 1642 // be showing once AppsCustomize disappears 1643 animateBackgroundGradient(getResources().getInteger( 1644 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1645 } else { 1646 // Fade the background gradient away 1647 animateBackgroundGradient(0f, true); 1648 } 1649 } 1650 1651 /** 1652 * Draw the View v into the given Canvas. 1653 * 1654 * @param v the view to draw 1655 * @param destCanvas the canvas to draw on 1656 * @param padding the horizontal and vertical padding to use when drawing 1657 */ 1658 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1659 final Rect clipRect = mTempRect; 1660 v.getDrawingRect(clipRect); 1661 1662 boolean textVisible = false; 1663 1664 destCanvas.save(); 1665 if (v instanceof TextView && pruneToDrawable) { 1666 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1667 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1668 destCanvas.translate(padding / 2, padding / 2); 1669 d.draw(destCanvas); 1670 } else { 1671 if (v instanceof FolderIcon) { 1672 // For FolderIcons the text can bleed into the icon area, and so we need to 1673 // hide the text completely (which can't be achieved by clipping). 1674 if (((FolderIcon) v).getTextVisible()) { 1675 ((FolderIcon) v).setTextVisible(false); 1676 textVisible = true; 1677 } 1678 } else if (v instanceof BubbleTextView) { 1679 final BubbleTextView tv = (BubbleTextView) v; 1680 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1681 tv.getLayout().getLineTop(0); 1682 } else if (v instanceof TextView) { 1683 final TextView tv = (TextView) v; 1684 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1685 tv.getLayout().getLineTop(0); 1686 } 1687 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1688 destCanvas.clipRect(clipRect, Op.REPLACE); 1689 v.draw(destCanvas); 1690 1691 // Restore text visibility of FolderIcon if necessary 1692 if (textVisible) { 1693 ((FolderIcon) v).setTextVisible(true); 1694 } 1695 } 1696 destCanvas.restore(); 1697 } 1698 1699 /** 1700 * Returns a new bitmap to show when the given View is being dragged around. 1701 * Responsibility for the bitmap is transferred to the caller. 1702 */ 1703 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1704 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1705 Bitmap b; 1706 1707 if (v instanceof TextView) { 1708 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1709 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1710 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1711 } else { 1712 b = Bitmap.createBitmap( 1713 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1714 } 1715 1716 canvas.setBitmap(b); 1717 drawDragView(v, canvas, padding, true); 1718 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1719 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1720 canvas.setBitmap(null); 1721 1722 return b; 1723 } 1724 1725 /** 1726 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1727 * Responsibility for the bitmap is transferred to the caller. 1728 */ 1729 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1730 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1731 final Bitmap b = Bitmap.createBitmap( 1732 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1733 1734 canvas.setBitmap(b); 1735 drawDragView(v, canvas, padding, false); 1736 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1737 canvas.setBitmap(null); 1738 return b; 1739 } 1740 1741 /** 1742 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1743 * Responsibility for the bitmap is transferred to the caller. 1744 */ 1745 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1746 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1747 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1748 canvas.setBitmap(b); 1749 1750 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1751 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1752 (h - padding) / (float) orig.getHeight()); 1753 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1754 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1755 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1756 1757 // center the image 1758 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1759 1760 Paint p = new Paint(); 1761 p.setFilterBitmap(true); 1762 canvas.drawBitmap(orig, src, dst, p); 1763 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1764 canvas.setBitmap(null); 1765 1766 return b; 1767 } 1768 1769 /** 1770 * Creates a drag outline to represent a drop (that we don't have the actual information for 1771 * yet). May be changed in the future to alter the drop outline slightly depending on the 1772 * clip description mime data. 1773 */ 1774 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1775 Resources r = getResources(); 1776 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1777 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1778 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1779 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1780 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1781 final Bitmap b = Bitmap.createBitmap( 1782 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1783 1784 canvas.setBitmap(b); 1785 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1786 rectRadius, rectRadius, mExternalDragOutlinePaint); 1787 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1788 canvas.setBitmap(null); 1789 return b; 1790 } 1791 1792 void startDrag(CellLayout.CellInfo cellInfo) { 1793 View child = cellInfo.cell; 1794 1795 // Make sure the drag was started by a long press as opposed to a long click. 1796 if (!child.isInTouchMode()) { 1797 return; 1798 } 1799 1800 mDragInfo = cellInfo; 1801 child.setVisibility(GONE); 1802 1803 child.clearFocus(); 1804 child.setPressed(false); 1805 1806 final Canvas canvas = new Canvas(); 1807 1808 // We need to add extra padding to the bitmap to make room for the glow effect 1809 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1810 1811 // The outline is used to visualize where the item will land if dropped 1812 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1813 beginDragShared(child, this); 1814 } 1815 1816 public void beginDragShared(View child, DragSource source) { 1817 // We need to add extra padding to the bitmap to make room for the glow effect 1818 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1819 1820 // The drag bitmap follows the touch point around on the screen 1821 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1822 1823 final int bmpWidth = b.getWidth(); 1824 1825 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1826 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1827 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1828 1829 Rect dragRect = null; 1830 if (child instanceof BubbleTextView) { 1831 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 1832 int top = child.getPaddingTop(); 1833 int left = (bmpWidth - iconSize) / 2; 1834 int right = left + iconSize; 1835 int bottom = top + iconSize; 1836 dragLayerY += top; 1837 dragRect = new Rect(left, top, right, bottom); 1838 } else if (child instanceof FolderIcon) { 1839 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1840 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1841 } 1842 1843 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1844 DragController.DRAG_ACTION_MOVE, dragRect); 1845 b.recycle(); 1846 } 1847 1848 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1849 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1850 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1851 1852 final int[] cellXY = new int[2]; 1853 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1854 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1855 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1856 cellXY[1]); 1857 } 1858 1859 public boolean transitionStateShouldAllowDrop() { 1860 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1861 } 1862 1863 /** 1864 * {@inheritDoc} 1865 */ 1866 public boolean acceptDrop(DragObject d) { 1867 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1868 if (d.dragSource != this) { 1869 // Don't accept the drop if we're not over a screen at time of drop 1870 if (mDragTargetLayout == null) { 1871 return false; 1872 } 1873 if (!transitionStateShouldAllowDrop()) return false; 1874 1875 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1876 d.dragView, mDragViewVisualCenter); 1877 1878 // We want the point to be mapped to the dragTarget. 1879 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1880 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1881 } else { 1882 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1883 } 1884 1885 int spanX = 1; 1886 int spanY = 1; 1887 View ignoreView = null; 1888 if (mDragInfo != null) { 1889 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1890 spanX = dragCellInfo.spanX; 1891 spanY = dragCellInfo.spanY; 1892 ignoreView = dragCellInfo.cell; 1893 } else { 1894 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1895 spanX = dragInfo.spanX; 1896 spanY = dragInfo.spanY; 1897 } 1898 1899 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1900 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1901 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1902 return true; 1903 } 1904 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1905 mTargetCell)) { 1906 return true; 1907 } 1908 1909 1910 // Don't accept the drop if there's no room for the item 1911 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1912 mLauncher.showOutOfSpaceMessage(); 1913 return false; 1914 } 1915 } 1916 return true; 1917 } 1918 1919 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 1920 boolean considerTimeout) { 1921 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1922 1923 boolean hasntMoved = false; 1924 if (mDragInfo != null) { 1925 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 1926 hasntMoved = (mDragInfo.cellX == targetCell[0] && 1927 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 1928 } 1929 1930 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 1931 return false; 1932 } 1933 1934 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 1935 boolean willBecomeShortcut = 1936 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 1937 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 1938 1939 return (aboveShortcut && willBecomeShortcut); 1940 } 1941 1942 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 1943 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1944 if (dropOverView instanceof FolderIcon) { 1945 FolderIcon fi = (FolderIcon) dropOverView; 1946 if (fi.acceptDrop(dragInfo)) { 1947 return true; 1948 } 1949 } 1950 return false; 1951 } 1952 1953 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 1954 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 1955 View v = target.getChildAt(targetCell[0], targetCell[1]); 1956 boolean hasntMoved = false; 1957 if (mDragInfo != null) { 1958 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 1959 hasntMoved = (mDragInfo.cellX == targetCell[0] && 1960 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 1961 } 1962 1963 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 1964 mCreateUserFolderOnDrop = false; 1965 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 1966 1967 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 1968 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 1969 1970 if (aboveShortcut && willBecomeShortcut) { 1971 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 1972 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 1973 // if the drag started here, we need to remove it from the workspace 1974 if (!external) { 1975 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 1976 } 1977 1978 Rect folderLocation = new Rect(); 1979 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 1980 target.removeView(v); 1981 1982 FolderIcon fi = 1983 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 1984 destInfo.cellX = -1; 1985 destInfo.cellY = -1; 1986 sourceInfo.cellX = -1; 1987 sourceInfo.cellY = -1; 1988 1989 // If the dragView is null, we can't animate 1990 boolean animate = dragView != null; 1991 if (animate) { 1992 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 1993 postAnimationRunnable); 1994 } else { 1995 fi.addItem(destInfo); 1996 fi.addItem(sourceInfo); 1997 } 1998 return true; 1999 } 2000 return false; 2001 } 2002 2003 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2004 DragObject d, boolean external) { 2005 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2006 if (dropOverView instanceof FolderIcon) { 2007 FolderIcon fi = (FolderIcon) dropOverView; 2008 if (fi.acceptDrop(d.dragInfo)) { 2009 fi.onDrop(d); 2010 2011 // if the drag started here, we need to remove it from the workspace 2012 if (!external) { 2013 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2014 } 2015 return true; 2016 } 2017 } 2018 return false; 2019 } 2020 2021 public void onDrop(DragObject d) { 2022 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2023 mDragViewVisualCenter); 2024 2025 // We want the point to be mapped to the dragTarget. 2026 if (mDragTargetLayout != null) { 2027 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2028 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2029 } else { 2030 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2031 } 2032 } 2033 2034 CellLayout dropTargetLayout = mDragTargetLayout; 2035 2036 int snapScreen = -1; 2037 if (d.dragSource != this) { 2038 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2039 (int) mDragViewVisualCenter[1] }; 2040 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2041 } else if (mDragInfo != null) { 2042 final View cell = mDragInfo.cell; 2043 2044 if (dropTargetLayout != null) { 2045 // Move internally 2046 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2047 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2048 long container = hasMovedIntoHotseat ? 2049 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2050 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2051 int screen = (mTargetCell[0] < 0) ? 2052 mDragInfo.screen : indexOfChild(dropTargetLayout); 2053 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2054 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2055 // First we find the cell nearest to point at which the item is 2056 // dropped, without any consideration to whether there is an item there. 2057 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2058 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2059 // If the item being dropped is a shortcut and the nearest drop 2060 // cell also contains a shortcut, then create a folder with the two shortcuts. 2061 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2062 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2063 return; 2064 } 2065 2066 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2067 return; 2068 } 2069 2070 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2071 // we need to find the nearest cell location that is vacant 2072 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2073 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2074 dropTargetLayout, mTargetCell); 2075 2076 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2077 snapScreen = screen; 2078 snapToPage(screen); 2079 } 2080 2081 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2082 if (hasMovedLayouts) { 2083 // Reparent the view 2084 getParentCellLayoutForView(cell).removeView(cell); 2085 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2086 mDragInfo.spanX, mDragInfo.spanY); 2087 } 2088 2089 // update the item's position after drop 2090 final ItemInfo info = (ItemInfo) cell.getTag(); 2091 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2092 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2093 lp.cellX = mTargetCell[0]; 2094 lp.cellY = mTargetCell[1]; 2095 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2096 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2097 2098 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2099 cell instanceof LauncherAppWidgetHostView) { 2100 final CellLayout cellLayout = dropTargetLayout; 2101 // We post this call so that the widget has a chance to be placed 2102 // in its final location 2103 2104 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2105 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2106 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2107 final Runnable resizeRunnable = new Runnable() { 2108 public void run() { 2109 DragLayer dragLayer = mLauncher.getDragLayer(); 2110 dragLayer.addResizeFrame(info, hostView, cellLayout); 2111 } 2112 }; 2113 post(new Runnable() { 2114 public void run() { 2115 if (!isPageMoving()) { 2116 resizeRunnable.run(); 2117 } else { 2118 mDelayedResizeRunnable = resizeRunnable; 2119 } 2120 } 2121 }); 2122 } 2123 } 2124 2125 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2126 lp.cellY); 2127 } 2128 } 2129 2130 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2131 2132 // Prepare it to be animated into its new position 2133 // This must be called after the view has been re-parented 2134 final Runnable disableHardwareLayersRunnable = new Runnable() { 2135 @Override 2136 public void run() { 2137 mAnimatingViewIntoPlace = false; 2138 updateChildrenLayersEnabled(); 2139 } 2140 }; 2141 mAnimatingViewIntoPlace = true; 2142 if (d.dragView.hasDrawn()) { 2143 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2144 setFinalScrollForPageChange(snapScreen); 2145 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2146 disableHardwareLayersRunnable); 2147 resetFinalScrollForPageChange(snapScreen); 2148 } else { 2149 cell.setVisibility(VISIBLE); 2150 } 2151 parent.onDropChild(cell); 2152 } 2153 } 2154 2155 public void setFinalScrollForPageChange(int screen) { 2156 if (screen >= 0) { 2157 mSavedScrollX = getScrollX(); 2158 CellLayout cl = (CellLayout) getChildAt(screen); 2159 mSavedTranslationX = cl.getTranslationX(); 2160 mSavedRotationY = cl.getRotationY(); 2161 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2162 setScrollX(newX); 2163 cl.setTranslationX(0f); 2164 cl.setRotationY(0f); 2165 } 2166 } 2167 2168 public void resetFinalScrollForPageChange(int screen) { 2169 if (screen >= 0) { 2170 CellLayout cl = (CellLayout) getChildAt(screen); 2171 setScrollX(mSavedScrollX); 2172 cl.setTranslationX(mSavedTranslationX); 2173 cl.setRotationY(mSavedRotationY); 2174 } 2175 } 2176 2177 public void getViewLocationRelativeToSelf(View v, int[] location) { 2178 getLocationInWindow(location); 2179 int x = location[0]; 2180 int y = location[1]; 2181 2182 v.getLocationInWindow(location); 2183 int vX = location[0]; 2184 int vY = location[1]; 2185 2186 location[0] = vX - x; 2187 location[1] = vY - y; 2188 } 2189 2190 public void onDragEnter(DragObject d) { 2191 if (mDragTargetLayout != null) { 2192 mDragTargetLayout.setIsDragOverlapping(false); 2193 mDragTargetLayout.onDragExit(); 2194 } 2195 mDragTargetLayout = getCurrentDropLayout(); 2196 mDragTargetLayout.setIsDragOverlapping(true); 2197 mDragTargetLayout.onDragEnter(); 2198 2199 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2200 // don't need to show the outlines 2201 if (LauncherApplication.isScreenLarge()) { 2202 showOutlines(); 2203 } 2204 } 2205 2206 private void doDragExit(DragObject d) { 2207 // Clean up folders 2208 cleanupFolderCreation(d); 2209 2210 // Reset the scroll area and previous drag target 2211 onResetScrollArea(); 2212 2213 if (mDragTargetLayout != null) { 2214 mDragTargetLayout.setIsDragOverlapping(false); 2215 mDragTargetLayout.onDragExit(); 2216 } 2217 mLastDragOverView = null; 2218 2219 if (!mIsPageMoving) { 2220 hideOutlines(); 2221 } 2222 } 2223 2224 public void onDragExit(DragObject d) { 2225 doDragExit(d); 2226 } 2227 2228 public DropTarget getDropTargetDelegate(DragObject d) { 2229 return null; 2230 } 2231 2232 /** 2233 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2234 * in the returned structure related to the widgets that match the drop (or a null list if it is 2235 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2236 */ 2237 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2238 final LauncherModel model = mLauncher.getModel(); 2239 final ClipDescription desc = event.getClipDescription(); 2240 final int mimeTypeCount = desc.getMimeTypeCount(); 2241 for (int i = 0; i < mimeTypeCount; ++i) { 2242 final String mimeType = desc.getMimeType(i); 2243 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2244 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2245 } else { 2246 final List<WidgetMimeTypeHandlerData> widgets = 2247 model.resolveWidgetsForMimeType(mContext, mimeType); 2248 if (widgets.size() > 0) { 2249 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2250 } 2251 } 2252 } 2253 return null; 2254 } 2255 2256 /** 2257 * Global drag and drop handler 2258 */ 2259 @Override 2260 public boolean onDragEvent(DragEvent event) { 2261 final ClipDescription desc = event.getClipDescription(); 2262 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2263 final int[] pos = new int[2]; 2264 layout.getLocationOnScreen(pos); 2265 // We need to offset the drag coordinates to layout coordinate space 2266 final int x = (int) event.getX() - pos[0]; 2267 final int y = (int) event.getY() - pos[1]; 2268 2269 switch (event.getAction()) { 2270 case DragEvent.ACTION_DRAG_STARTED: { 2271 // Validate this drag 2272 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2273 if (test != null) { 2274 boolean isShortcut = (test.second == null); 2275 if (isShortcut) { 2276 // Check if we have enough space on this screen to add a new shortcut 2277 if (!layout.findCellForSpan(pos, 1, 1)) { 2278 mLauncher.showOutOfSpaceMessage(); 2279 return false; 2280 } 2281 } 2282 } else { 2283 // Show error message if we couldn't accept any of the items 2284 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2285 Toast.LENGTH_SHORT).show(); 2286 return false; 2287 } 2288 2289 // Create the drag outline 2290 // We need to add extra padding to the bitmap to make room for the glow effect 2291 final Canvas canvas = new Canvas(); 2292 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2293 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2294 2295 // Show the current page outlines to indicate that we can accept this drop 2296 showOutlines(); 2297 layout.setIsDragOccuring(true); 2298 layout.onDragEnter(); 2299 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2300 2301 return true; 2302 } 2303 case DragEvent.ACTION_DRAG_LOCATION: 2304 // Visualize the drop location 2305 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2306 return true; 2307 case DragEvent.ACTION_DROP: { 2308 // Try and add any shortcuts 2309 final LauncherModel model = mLauncher.getModel(); 2310 final ClipData data = event.getClipData(); 2311 2312 // We assume that the mime types are ordered in descending importance of 2313 // representation. So we enumerate the list of mime types and alert the 2314 // user if any widgets can handle the drop. Only the most preferred 2315 // representation will be handled. 2316 pos[0] = x; 2317 pos[1] = y; 2318 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2319 if (test != null) { 2320 final int index = test.first; 2321 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2322 final boolean isShortcut = (widgets == null); 2323 final String mimeType = desc.getMimeType(index); 2324 if (isShortcut) { 2325 final Intent intent = data.getItemAt(index).getIntent(); 2326 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2327 onDropExternal(new int[] { x, y }, info, layout, false); 2328 } else { 2329 if (widgets.size() == 1) { 2330 // If there is only one item, then go ahead and add and configure 2331 // that widget 2332 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2333 final PendingAddWidgetInfo createInfo = 2334 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2335 mLauncher.addAppWidgetFromDrop(createInfo, 2336 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2337 } else { 2338 // Show the widget picker dialog if there is more than one widget 2339 // that can handle this data type 2340 final InstallWidgetReceiver.WidgetListAdapter adapter = 2341 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2342 data, widgets, layout, mCurrentPage, pos); 2343 final AlertDialog.Builder builder = 2344 new AlertDialog.Builder(mContext); 2345 builder.setAdapter(adapter, adapter); 2346 builder.setCancelable(true); 2347 builder.setTitle(mContext.getString( 2348 R.string.external_drop_widget_pick_title)); 2349 builder.setIcon(R.drawable.ic_no_applications); 2350 builder.show(); 2351 } 2352 } 2353 } 2354 return true; 2355 } 2356 case DragEvent.ACTION_DRAG_ENDED: 2357 // Hide the page outlines after the drop 2358 layout.setIsDragOccuring(false); 2359 layout.onDragExit(); 2360 hideOutlines(); 2361 return true; 2362 } 2363 return super.onDragEvent(event); 2364 } 2365 2366 /* 2367 * 2368 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2369 * coordinate space. The argument xy is modified with the return result. 2370 * 2371 */ 2372 void mapPointFromSelfToChild(View v, float[] xy) { 2373 mapPointFromSelfToChild(v, xy, null); 2374 } 2375 2376 /* 2377 * 2378 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2379 * coordinate space. The argument xy is modified with the return result. 2380 * 2381 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2382 * computing it itself; we use this to avoid redundant matrix inversions in 2383 * findMatchingPageForDragOver 2384 * 2385 */ 2386 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2387 if (cachedInverseMatrix == null) { 2388 v.getMatrix().invert(mTempInverseMatrix); 2389 cachedInverseMatrix = mTempInverseMatrix; 2390 } 2391 xy[0] = xy[0] + mScrollX - v.getLeft(); 2392 xy[1] = xy[1] + mScrollY - v.getTop(); 2393 cachedInverseMatrix.mapPoints(xy); 2394 } 2395 2396 /* 2397 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2398 * covers the full screen) 2399 */ 2400 void mapPointFromSelfToSibling(View v, float[] xy) { 2401 xy[0] = xy[0] - v.getLeft(); 2402 xy[1] = xy[1] - v.getTop(); 2403 } 2404 2405 /* 2406 * 2407 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2408 * the parent View's coordinate space. The argument xy is modified with the return result. 2409 * 2410 */ 2411 void mapPointFromChildToSelf(View v, float[] xy) { 2412 v.getMatrix().mapPoints(xy); 2413 xy[0] -= (mScrollX - v.getLeft()); 2414 xy[1] -= (mScrollY - v.getTop()); 2415 } 2416 2417 static private float squaredDistance(float[] point1, float[] point2) { 2418 float distanceX = point1[0] - point2[0]; 2419 float distanceY = point2[1] - point2[1]; 2420 return distanceX * distanceX + distanceY * distanceY; 2421 } 2422 2423 /* 2424 * 2425 * Returns true if the passed CellLayout cl overlaps with dragView 2426 * 2427 */ 2428 boolean overlaps(CellLayout cl, DragView dragView, 2429 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2430 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2431 final float[] draggedItemTopLeft = mTempDragCoordinates; 2432 draggedItemTopLeft[0] = dragViewX; 2433 draggedItemTopLeft[1] = dragViewY; 2434 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2435 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2436 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2437 2438 // Transform the dragged item's top left coordinates 2439 // to the CellLayout's local coordinates 2440 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2441 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2442 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2443 2444 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2445 // Transform the dragged item's bottom right coordinates 2446 // to the CellLayout's local coordinates 2447 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2448 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2449 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2450 2451 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2452 float overlap = (overlapRegionRight - overlapRegionLeft) * 2453 (overlapRegionBottom - overlapRegionTop); 2454 if (overlap > 0) { 2455 return true; 2456 } 2457 } 2458 } 2459 return false; 2460 } 2461 2462 /* 2463 * 2464 * This method returns the CellLayout that is currently being dragged to. In order to drag 2465 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2466 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2467 * 2468 * Return null if no CellLayout is currently being dragged over 2469 * 2470 */ 2471 private CellLayout findMatchingPageForDragOver( 2472 DragView dragView, float originX, float originY, boolean exact) { 2473 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2474 // with the item being dragged and then choose the one that's closest to the touch point 2475 final int screenCount = getChildCount(); 2476 CellLayout bestMatchingScreen = null; 2477 float smallestDistSoFar = Float.MAX_VALUE; 2478 2479 for (int i = 0; i < screenCount; i++) { 2480 CellLayout cl = (CellLayout) getChildAt(i); 2481 2482 final float[] touchXy = {originX, originY}; 2483 // Transform the touch coordinates to the CellLayout's local coordinates 2484 // If the touch point is within the bounds of the cell layout, we can return immediately 2485 cl.getMatrix().invert(mTempInverseMatrix); 2486 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2487 2488 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2489 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2490 return cl; 2491 } 2492 2493 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2494 // Get the center of the cell layout in screen coordinates 2495 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2496 cellLayoutCenter[0] = cl.getWidth()/2; 2497 cellLayoutCenter[1] = cl.getHeight()/2; 2498 mapPointFromChildToSelf(cl, cellLayoutCenter); 2499 2500 touchXy[0] = originX; 2501 touchXy[1] = originY; 2502 2503 // Calculate the distance between the center of the CellLayout 2504 // and the touch point 2505 float dist = squaredDistance(touchXy, cellLayoutCenter); 2506 2507 if (dist < smallestDistSoFar) { 2508 smallestDistSoFar = dist; 2509 bestMatchingScreen = cl; 2510 } 2511 } 2512 } 2513 return bestMatchingScreen; 2514 } 2515 2516 // This is used to compute the visual center of the dragView. This point is then 2517 // used to visualize drop locations and determine where to drop an item. The idea is that 2518 // the visual center represents the user's interpretation of where the item is, and hence 2519 // is the appropriate point to use when determining drop location. 2520 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2521 DragView dragView, float[] recycle) { 2522 float res[]; 2523 if (recycle == null) { 2524 res = new float[2]; 2525 } else { 2526 res = recycle; 2527 } 2528 2529 // First off, the drag view has been shifted in a way that is not represented in the 2530 // x and y values or the x/yOffsets. Here we account for that shift. 2531 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2532 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2533 2534 // These represent the visual top and left of drag view if a dragRect was provided. 2535 // If a dragRect was not provided, then they correspond to the actual view left and 2536 // top, as the dragRect is in that case taken to be the entire dragView. 2537 // R.dimen.dragViewOffsetY. 2538 int left = x - xOffset; 2539 int top = y - yOffset; 2540 2541 // In order to find the visual center, we shift by half the dragRect 2542 res[0] = left + dragView.getDragRegion().width() / 2; 2543 res[1] = top + dragView.getDragRegion().height() / 2; 2544 2545 return res; 2546 } 2547 2548 private boolean isDragWidget(DragObject d) { 2549 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2550 d.dragInfo instanceof PendingAddWidgetInfo); 2551 } 2552 private boolean isExternalDragWidget(DragObject d) { 2553 return d.dragSource != this && isDragWidget(d); 2554 } 2555 2556 public void onDragOver(DragObject d) { 2557 // Skip drag over events while we are dragging over side pages 2558 if (mInScrollArea) return; 2559 if (mIsSwitchingState) return; 2560 2561 Rect r = new Rect(); 2562 CellLayout layout = null; 2563 ItemInfo item = (ItemInfo) d.dragInfo; 2564 2565 // Ensure that we have proper spans for the item that we are dropping 2566 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2567 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2568 d.dragView, mDragViewVisualCenter); 2569 2570 // Identify whether we have dragged over a side page 2571 if (isSmall()) { 2572 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2573 mLauncher.getHotseat().getHitRect(r); 2574 if (r.contains(d.x, d.y)) { 2575 layout = mLauncher.getHotseat().getLayout(); 2576 } 2577 } 2578 if (layout == null) { 2579 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, true); 2580 } 2581 if (layout != mDragTargetLayout) { 2582 // Cancel all intermediate folder states 2583 cleanupFolderCreation(d); 2584 2585 if (mDragTargetLayout != null) { 2586 mDragTargetLayout.setIsDragOverlapping(false); 2587 mDragTargetLayout.onDragExit(); 2588 } 2589 mDragTargetLayout = layout; 2590 if (mDragTargetLayout != null) { 2591 mDragTargetLayout.setIsDragOverlapping(true); 2592 mDragTargetLayout.onDragEnter(); 2593 } else { 2594 mLastDragOverView = null; 2595 } 2596 2597 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2598 if (isInSpringLoadedMode) { 2599 if (mLauncher.isHotseatLayout(layout)) { 2600 mSpringLoadedDragController.cancel(); 2601 } else { 2602 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2603 } 2604 } 2605 } 2606 } else { 2607 // Test to see if we are over the hotseat otherwise just use the current page 2608 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2609 mLauncher.getHotseat().getHitRect(r); 2610 if (r.contains(d.x, d.y)) { 2611 layout = mLauncher.getHotseat().getLayout(); 2612 } 2613 } 2614 if (layout == null) { 2615 layout = getCurrentDropLayout(); 2616 } 2617 if (layout != mDragTargetLayout) { 2618 if (mDragTargetLayout != null) { 2619 mDragTargetLayout.setIsDragOverlapping(false); 2620 mDragTargetLayout.onDragExit(); 2621 } 2622 mDragTargetLayout = layout; 2623 mDragTargetLayout.setIsDragOverlapping(true); 2624 mDragTargetLayout.onDragEnter(); 2625 } 2626 } 2627 2628 // Handle the drag over 2629 if (mDragTargetLayout != null) { 2630 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2631 2632 // We want the point to be mapped to the dragTarget. 2633 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2634 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2635 } else { 2636 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2637 } 2638 ItemInfo info = (ItemInfo) d.dragInfo; 2639 2640 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2641 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2642 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2643 mTargetCell[1]); 2644 2645 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2646 mTargetCell, false); 2647 boolean isOverFolder = dragOverView instanceof FolderIcon; 2648 if (dragOverView != mLastDragOverView) { 2649 cancelFolderCreation(); 2650 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2651 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2652 } 2653 } 2654 2655 if (userFolderPending && dragOverView != mLastDragOverView) { 2656 mFolderCreationAlarm.setOnAlarmListener(new 2657 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2658 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2659 } 2660 2661 if (dragOverView != mLastDragOverView && isOverFolder) { 2662 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2663 if (mDragTargetLayout != null) { 2664 mDragTargetLayout.clearDragOutlines(); 2665 } 2666 } 2667 mLastDragOverView = dragOverView; 2668 2669 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2670 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2671 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2672 item.spanX, item.spanY); 2673 } 2674 } 2675 } 2676 2677 private void cleanupFolderCreation(DragObject d) { 2678 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2679 mDragFolderRingAnimator.animateToNaturalState(); 2680 } 2681 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2682 if (d != null) { 2683 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2684 } 2685 } 2686 mFolderCreationAlarm.cancelAlarm(); 2687 } 2688 2689 private void cancelFolderCreation() { 2690 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2691 mDragFolderRingAnimator.animateToNaturalState(); 2692 } 2693 mCreateUserFolderOnDrop = false; 2694 mFolderCreationAlarm.cancelAlarm(); 2695 } 2696 2697 class FolderCreationAlarmListener implements OnAlarmListener { 2698 CellLayout layout; 2699 int cellX; 2700 int cellY; 2701 2702 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2703 this.layout = layout; 2704 this.cellX = cellX; 2705 this.cellY = cellY; 2706 } 2707 2708 public void onAlarm(Alarm alarm) { 2709 if (mDragFolderRingAnimator == null) { 2710 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2711 } 2712 mDragFolderRingAnimator.setCell(cellX, cellY); 2713 mDragFolderRingAnimator.setCellLayout(layout); 2714 mDragFolderRingAnimator.animateToAcceptState(); 2715 layout.showFolderAccept(mDragFolderRingAnimator); 2716 layout.clearDragOutlines(); 2717 mCreateUserFolderOnDrop = true; 2718 } 2719 } 2720 2721 @Override 2722 public void getHitRect(Rect outRect) { 2723 // We want the workspace to have the whole area of the display (it will find the correct 2724 // cell layout to drop to in the existing drag/drop logic. 2725 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2726 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2727 } 2728 2729 /** 2730 * Add the item specified by dragInfo to the given layout. 2731 * @return true if successful 2732 */ 2733 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2734 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2735 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2736 return true; 2737 } 2738 mLauncher.showOutOfSpaceMessage(); 2739 return false; 2740 } 2741 2742 private void onDropExternal(int[] touchXY, Object dragInfo, 2743 CellLayout cellLayout, boolean insertAtFirst) { 2744 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2745 } 2746 2747 /** 2748 * Drop an item that didn't originate on one of the workspace screens. 2749 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2750 * come from another app altogether. 2751 * 2752 * NOTE: This can also be called when we are outside of a drag event, when we want 2753 * to add an item to one of the workspace screens. 2754 */ 2755 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2756 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2757 final Runnable exitSpringLoadedRunnable = new Runnable() { 2758 @Override 2759 public void run() { 2760 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2761 } 2762 }; 2763 2764 ItemInfo info = (ItemInfo) dragInfo; 2765 int spanX = info.spanX; 2766 int spanY = info.spanY; 2767 if (mDragInfo != null) { 2768 spanX = mDragInfo.spanX; 2769 spanY = mDragInfo.spanY; 2770 } 2771 2772 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2773 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2774 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2775 final int screen = indexOfChild(cellLayout); 2776 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2777 && mState != State.SPRING_LOADED) { 2778 snapToPage(screen); 2779 } 2780 2781 if (info instanceof PendingAddItemInfo) { 2782 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2783 2784 boolean findNearestVacantCell = true; 2785 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2786 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2787 cellLayout, mTargetCell); 2788 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2789 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2790 mDragTargetLayout, mTargetCell)) { 2791 findNearestVacantCell = false; 2792 } 2793 } 2794 if (findNearestVacantCell) { 2795 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2796 cellLayout, mTargetCell); 2797 } 2798 2799 Runnable onAnimationCompleteRunnable = new Runnable() { 2800 @Override 2801 public void run() { 2802 // When dragging and dropping from customization tray, we deal with creating 2803 // widgets/shortcuts/folders in a slightly different way 2804 switch (pendingInfo.itemType) { 2805 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2806 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2807 container, screen, mTargetCell, null); 2808 break; 2809 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2810 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2811 container, screen, mTargetCell, null); 2812 break; 2813 default: 2814 throw new IllegalStateException("Unknown item type: " + 2815 pendingInfo.itemType); 2816 } 2817 cellLayout.onDragExit(); 2818 } 2819 }; 2820 2821 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2822 // location and size on the home screen. 2823 int loc[] = new int[2]; 2824 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 2825 2826 RectF r = new RectF(); 2827 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 2828 setFinalTransitionTransform(cellLayout); 2829 float cellLayoutScale = 2830 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2831 resetTransitionTransform(cellLayout); 2832 2833 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 2834 // The animation will scale the dragView about its center, so we need to center about 2835 // the final location. 2836 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2837 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2838 2839 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2840 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2841 } else { 2842 // This is for other drag/drop cases, like dragging from All Apps 2843 View view = null; 2844 2845 switch (info.itemType) { 2846 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2847 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2848 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2849 // Came from all apps -- make a copy 2850 info = new ShortcutInfo((ApplicationInfo) info); 2851 } 2852 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2853 (ShortcutInfo) info); 2854 break; 2855 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2856 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2857 (FolderInfo) info, mIconCache); 2858 break; 2859 default: 2860 throw new IllegalStateException("Unknown item type: " + info.itemType); 2861 } 2862 2863 // First we find the cell nearest to point at which the item is 2864 // dropped, without any consideration to whether there is an item there. 2865 if (touchXY != null) { 2866 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2867 cellLayout, mTargetCell); 2868 d.postAnimationRunnable = exitSpringLoadedRunnable; 2869 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2870 d.dragView, d.postAnimationRunnable)) { 2871 return; 2872 } 2873 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2874 return; 2875 } 2876 } 2877 2878 if (touchXY != null) { 2879 // when dragging and dropping, just find the closest free spot 2880 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2881 cellLayout, mTargetCell); 2882 } else { 2883 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2884 } 2885 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2886 info.spanY, insertAtFirst); 2887 cellLayout.onDropChild(view); 2888 cellLayout.animateDrop(); 2889 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2890 cellLayout.getChildrenLayout().measureChild(view); 2891 2892 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2893 lp.cellX, lp.cellY); 2894 2895 if (d.dragView != null) { 2896 // We wrap the animation call in the temporary set and reset of the current 2897 // cellLayout to its final transform -- this means we animate the drag view to 2898 // the correct final location. 2899 setFinalTransitionTransform(cellLayout); 2900 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2901 exitSpringLoadedRunnable); 2902 resetTransitionTransform(cellLayout); 2903 } 2904 } 2905 } 2906 2907 public void setFinalTransitionTransform(CellLayout layout) { 2908 if (isSwitchingState()) { 2909 int index = indexOfChild(layout); 2910 mCurrentScaleX = layout.getScaleX(); 2911 mCurrentScaleY = layout.getScaleY(); 2912 mCurrentTranslationX = layout.getTranslationX(); 2913 mCurrentTranslationY = layout.getTranslationY(); 2914 mCurrentRotationY = layout.getRotationY(); 2915 layout.setScaleX(mNewScaleXs[index]); 2916 layout.setScaleY(mNewScaleYs[index]); 2917 layout.setTranslationX(mNewTranslationXs[index]); 2918 layout.setTranslationY(mNewTranslationYs[index]); 2919 layout.setRotationY(mNewRotationYs[index]); 2920 } 2921 } 2922 public void resetTransitionTransform(CellLayout layout) { 2923 if (isSwitchingState()) { 2924 mCurrentScaleX = layout.getScaleX(); 2925 mCurrentScaleY = layout.getScaleY(); 2926 mCurrentTranslationX = layout.getTranslationX(); 2927 mCurrentTranslationY = layout.getTranslationY(); 2928 mCurrentRotationY = layout.getRotationY(); 2929 layout.setScaleX(mCurrentScaleX); 2930 layout.setScaleY(mCurrentScaleY); 2931 layout.setTranslationX(mCurrentTranslationX); 2932 layout.setTranslationY(mCurrentTranslationY); 2933 layout.setRotationY(mCurrentRotationY); 2934 } 2935 } 2936 2937 /** 2938 * Return the current {@link CellLayout}, correctly picking the destination 2939 * screen while a scroll is in progress. 2940 */ 2941 public CellLayout getCurrentDropLayout() { 2942 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2943 } 2944 2945 /** 2946 * Return the current CellInfo describing our current drag; this method exists 2947 * so that Launcher can sync this object with the correct info when the activity is created/ 2948 * destroyed 2949 * 2950 */ 2951 public CellLayout.CellInfo getDragInfo() { 2952 return mDragInfo; 2953 } 2954 2955 /** 2956 * Calculate the nearest cell where the given object would be dropped. 2957 * 2958 * pixelX and pixelY should be in the coordinate system of layout 2959 */ 2960 private int[] findNearestVacantArea(int pixelX, int pixelY, 2961 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2962 return layout.findNearestVacantArea( 2963 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 2964 } 2965 2966 /** 2967 * Calculate the nearest cell where the given object would be dropped. 2968 * 2969 * pixelX and pixelY should be in the coordinate system of layout 2970 */ 2971 private int[] findNearestArea(int pixelX, int pixelY, 2972 int spanX, int spanY, CellLayout layout, int[] recycle) { 2973 return layout.findNearestArea( 2974 pixelX, pixelY, spanX, spanY, recycle); 2975 } 2976 2977 void setup(Launcher launcher, DragController dragController) { 2978 mLauncher = launcher; 2979 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2980 mDragController = dragController; 2981 2982 // hardware layers on children are enabled on startup, but should be disabled until 2983 // needed 2984 updateChildrenLayersEnabled(); 2985 setWallpaperDimension(); 2986 } 2987 2988 /** 2989 * Called at the end of a drag which originated on the workspace. 2990 */ 2991 public void onDropCompleted(View target, DragObject d, boolean success) { 2992 if (success) { 2993 if (target != this) { 2994 if (mDragInfo != null) { 2995 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2996 if (mDragInfo.cell instanceof DropTarget) { 2997 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 2998 } 2999 } 3000 } 3001 } else if (mDragInfo != null) { 3002 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3003 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3004 // moved into DragController.cancelDrag(). 3005 doDragExit(null); 3006 CellLayout cellLayout; 3007 if (mLauncher.isHotseatLayout(target)) { 3008 cellLayout = mLauncher.getHotseat().getLayout(); 3009 } else { 3010 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3011 } 3012 cellLayout.onDropChild(mDragInfo.cell); 3013 } 3014 mDragOutline = null; 3015 mDragInfo = null; 3016 } 3017 3018 public boolean isDropEnabled() { 3019 return true; 3020 } 3021 3022 @Override 3023 protected void onRestoreInstanceState(Parcelable state) { 3024 super.onRestoreInstanceState(state); 3025 Launcher.setScreen(mCurrentPage); 3026 } 3027 3028 @Override 3029 public void scrollLeft() { 3030 if (!isSmall() && !mIsSwitchingState) { 3031 super.scrollLeft(); 3032 } 3033 Folder openFolder = getOpenFolder(); 3034 if (openFolder != null) { 3035 openFolder.completeDragExit(); 3036 } 3037 } 3038 3039 @Override 3040 public void scrollRight() { 3041 if (!isSmall() && !mIsSwitchingState) { 3042 super.scrollRight(); 3043 } 3044 Folder openFolder = getOpenFolder(); 3045 if (openFolder != null) { 3046 openFolder.completeDragExit(); 3047 } 3048 } 3049 3050 @Override 3051 public void onEnterScrollArea(int x, int y, int direction) { 3052 // Ignore the scroll area if we are dragging over the hot seat 3053 if (mLauncher.getHotseat() != null) { 3054 Rect r = new Rect(); 3055 mLauncher.getHotseat().getHitRect(r); 3056 if (r.contains(x, y)) { 3057 return; 3058 } 3059 } 3060 3061 if (!isSmall() && !mIsSwitchingState) { 3062 mInScrollArea = true; 3063 3064 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3065 final CellLayout layout = (CellLayout) getChildAt(page); 3066 cancelFolderCreation(); 3067 3068 if (layout != null) { 3069 // Exit the current layout and mark the overlapping layout 3070 if (mDragTargetLayout != null) { 3071 mDragTargetLayout.setIsDragOverlapping(false); 3072 mDragTargetLayout.onDragExit(); 3073 } 3074 mDragTargetLayout = layout; 3075 mDragTargetLayout.setIsDragOverlapping(true); 3076 3077 // Workspace is responsible for drawing the edge glow on adjacent pages, 3078 // so we need to redraw the workspace when this may have changed. 3079 invalidate(); 3080 } 3081 } 3082 } 3083 3084 @Override 3085 public void onExitScrollArea() { 3086 if (mInScrollArea) { 3087 if (mDragTargetLayout != null) { 3088 // Unmark the overlapping layout and re-enter the current layout 3089 mDragTargetLayout.setIsDragOverlapping(false); 3090 mDragTargetLayout = getCurrentDropLayout(); 3091 mDragTargetLayout.onDragEnter(); 3092 3093 // Workspace is responsible for drawing the edge glow on adjacent pages, 3094 // so we need to redraw the workspace when this may have changed. 3095 invalidate(); 3096 } 3097 mInScrollArea = false; 3098 } 3099 } 3100 3101 private void onResetScrollArea() { 3102 if (mDragTargetLayout != null) { 3103 // Unmark the overlapping layout 3104 mDragTargetLayout.setIsDragOverlapping(false); 3105 3106 // Workspace is responsible for drawing the edge glow on adjacent pages, 3107 // so we need to redraw the workspace when this may have changed. 3108 invalidate(); 3109 } 3110 mInScrollArea = false; 3111 } 3112 3113 /** 3114 * Returns a specific CellLayout 3115 */ 3116 CellLayout getParentCellLayoutForView(View v) { 3117 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3118 for (CellLayout layout : layouts) { 3119 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3120 return layout; 3121 } 3122 } 3123 return null; 3124 } 3125 3126 /** 3127 * Returns a list of all the CellLayouts in the workspace. 3128 */ 3129 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3130 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3131 int screenCount = getChildCount(); 3132 for (int screen = 0; screen < screenCount; screen++) { 3133 layouts.add(((CellLayout) getChildAt(screen))); 3134 } 3135 if (mLauncher.getHotseat() != null) { 3136 layouts.add(mLauncher.getHotseat().getLayout()); 3137 } 3138 return layouts; 3139 } 3140 3141 /** 3142 * We should only use this to search for specific children. Do not use this method to modify 3143 * CellLayoutChildren directly. 3144 */ 3145 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3146 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3147 int screenCount = getChildCount(); 3148 for (int screen = 0; screen < screenCount; screen++) { 3149 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3150 } 3151 if (mLauncher.getHotseat() != null) { 3152 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3153 } 3154 return childrenLayouts; 3155 } 3156 3157 public Folder getFolderForTag(Object tag) { 3158 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3159 for (CellLayoutChildren layout: childrenLayouts) { 3160 int count = layout.getChildCount(); 3161 for (int i = 0; i < count; i++) { 3162 View child = layout.getChildAt(i); 3163 if (child instanceof Folder) { 3164 Folder f = (Folder) child; 3165 if (f.getInfo() == tag && f.getInfo().opened) { 3166 return f; 3167 } 3168 } 3169 } 3170 } 3171 return null; 3172 } 3173 3174 public View getViewForTag(Object tag) { 3175 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3176 for (CellLayoutChildren layout: childrenLayouts) { 3177 int count = layout.getChildCount(); 3178 for (int i = 0; i < count; i++) { 3179 View child = layout.getChildAt(i); 3180 if (child.getTag() == tag) { 3181 return child; 3182 } 3183 } 3184 } 3185 return null; 3186 } 3187 3188 void clearDropTargets() { 3189 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3190 for (CellLayoutChildren layout: childrenLayouts) { 3191 int childCount = layout.getChildCount(); 3192 for (int j = 0; j < childCount; j++) { 3193 View v = layout.getChildAt(j); 3194 if (v instanceof DropTarget) { 3195 mDragController.removeDropTarget((DropTarget) v); 3196 } 3197 } 3198 } 3199 } 3200 3201 void removeItems(final ArrayList<ApplicationInfo> apps) { 3202 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3203 3204 final HashSet<String> packageNames = new HashSet<String>(); 3205 final int appCount = apps.size(); 3206 for (int i = 0; i < appCount; i++) { 3207 packageNames.add(apps.get(i).componentName.getPackageName()); 3208 } 3209 3210 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3211 for (final CellLayout layoutParent: cellLayouts) { 3212 final ViewGroup layout = layoutParent.getChildrenLayout(); 3213 3214 // Avoid ANRs by treating each screen separately 3215 post(new Runnable() { 3216 public void run() { 3217 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3218 childrenToRemove.clear(); 3219 3220 int childCount = layout.getChildCount(); 3221 for (int j = 0; j < childCount; j++) { 3222 final View view = layout.getChildAt(j); 3223 Object tag = view.getTag(); 3224 3225 if (tag instanceof ShortcutInfo) { 3226 final ShortcutInfo info = (ShortcutInfo) tag; 3227 final Intent intent = info.intent; 3228 final ComponentName name = intent.getComponent(); 3229 3230 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3231 for (String packageName: packageNames) { 3232 if (packageName.equals(name.getPackageName())) { 3233 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3234 childrenToRemove.add(view); 3235 } 3236 } 3237 } 3238 } else if (tag instanceof FolderInfo) { 3239 final FolderInfo info = (FolderInfo) tag; 3240 final ArrayList<ShortcutInfo> contents = info.contents; 3241 final int contentsCount = contents.size(); 3242 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3243 new ArrayList<ShortcutInfo>(); 3244 3245 for (int k = 0; k < contentsCount; k++) { 3246 final ShortcutInfo appInfo = contents.get(k); 3247 final Intent intent = appInfo.intent; 3248 final ComponentName name = intent.getComponent(); 3249 3250 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3251 for (String packageName: packageNames) { 3252 if (packageName.equals(name.getPackageName())) { 3253 appsToRemoveFromFolder.add(appInfo); 3254 } 3255 } 3256 } 3257 } 3258 for (ShortcutInfo item: appsToRemoveFromFolder) { 3259 info.remove(item); 3260 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3261 } 3262 } else if (tag instanceof LauncherAppWidgetInfo) { 3263 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3264 final AppWidgetProviderInfo provider = 3265 widgets.getAppWidgetInfo(info.appWidgetId); 3266 if (provider != null) { 3267 for (String packageName: packageNames) { 3268 if (packageName.equals(provider.provider.getPackageName())) { 3269 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3270 childrenToRemove.add(view); 3271 } 3272 } 3273 } 3274 } 3275 } 3276 3277 childCount = childrenToRemove.size(); 3278 for (int j = 0; j < childCount; j++) { 3279 View child = childrenToRemove.get(j); 3280 // Note: We can not remove the view directly from CellLayoutChildren as this 3281 // does not re-mark the spaces as unoccupied. 3282 layoutParent.removeViewInLayout(child); 3283 if (child instanceof DropTarget) { 3284 mDragController.removeDropTarget((DropTarget)child); 3285 } 3286 } 3287 3288 if (childCount > 0) { 3289 layout.requestLayout(); 3290 layout.invalidate(); 3291 } 3292 } 3293 }); 3294 } 3295 } 3296 3297 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3298 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3299 for (CellLayoutChildren layout: childrenLayouts) { 3300 int childCount = layout.getChildCount(); 3301 for (int j = 0; j < childCount; j++) { 3302 final View view = layout.getChildAt(j); 3303 Object tag = view.getTag(); 3304 if (tag instanceof ShortcutInfo) { 3305 ShortcutInfo info = (ShortcutInfo)tag; 3306 // We need to check for ACTION_MAIN otherwise getComponent() might 3307 // return null for some shortcuts (for instance, for shortcuts to 3308 // web pages.) 3309 final Intent intent = info.intent; 3310 final ComponentName name = intent.getComponent(); 3311 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3312 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3313 final int appCount = apps.size(); 3314 for (int k = 0; k < appCount; k++) { 3315 ApplicationInfo app = apps.get(k); 3316 if (app.componentName.equals(name)) { 3317 info.setIcon(mIconCache.getIcon(info.intent)); 3318 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3319 new FastBitmapDrawable(info.getIcon(mIconCache)), 3320 null, null); 3321 } 3322 } 3323 } 3324 } 3325 } 3326 } 3327 } 3328 3329 void moveToDefaultScreen(boolean animate) { 3330 if (!isSmall()) { 3331 if (animate) { 3332 snapToPage(mDefaultPage); 3333 } else { 3334 setCurrentPage(mDefaultPage); 3335 } 3336 } 3337 getChildAt(mDefaultPage).requestFocus(); 3338 } 3339 3340 @Override 3341 public void syncPages() { 3342 } 3343 3344 @Override 3345 public void syncPageItems(int page, boolean immediate) { 3346 } 3347 3348 @Override 3349 protected String getCurrentPageDescription() { 3350 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3351 return String.format(mContext.getString(R.string.workspace_scroll_format), 3352 page + 1, getChildCount()); 3353 } 3354 3355 public void getLocationInDragLayer(int[] loc) { 3356 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3357 } 3358 3359 /** 3360 * Return true because we want the scrolling indicator to stretch to fit the space. 3361 */ 3362 protected boolean hasElasticScrollIndicator() { 3363 return true; 3364 } 3365 3366 void showDockDivider(boolean immediately) { 3367 final ViewGroup parent = (ViewGroup) getParent(); 3368 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3369 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3370 if (qsbDivider != null && dockDivider != null) { 3371 qsbDivider.setVisibility(View.VISIBLE); 3372 dockDivider.setVisibility(View.VISIBLE); 3373 if (mDividerAnimator != null) { 3374 mDividerAnimator.cancel(); 3375 mDividerAnimator = null; 3376 } 3377 if (immediately) { 3378 qsbDivider.setAlpha(1f); 3379 dockDivider.setAlpha(1f); 3380 } else { 3381 mDividerAnimator = new AnimatorSet(); 3382 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3383 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3384 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3385 mDividerAnimator.start(); 3386 } 3387 } 3388 } 3389 3390 void hideDockDivider(boolean immediately) { 3391 final ViewGroup parent = (ViewGroup) getParent(); 3392 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3393 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3394 if (qsbDivider != null && dockDivider != null) { 3395 if (mDividerAnimator != null) { 3396 mDividerAnimator.cancel(); 3397 mDividerAnimator = null; 3398 } 3399 if (immediately) { 3400 qsbDivider.setVisibility(View.GONE); 3401 dockDivider.setVisibility(View.GONE); 3402 qsbDivider.setAlpha(0f); 3403 dockDivider.setAlpha(0f); 3404 } else { 3405 mDividerAnimator = new AnimatorSet(); 3406 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3407 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3408 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3409 private boolean cancelled = false; 3410 @Override 3411 public void onAnimationCancel(android.animation.Animator animation) { 3412 cancelled = true; 3413 } 3414 @Override 3415 public void onAnimationEnd(android.animation.Animator animation) { 3416 if (!cancelled) { 3417 qsbDivider.setVisibility(View.GONE); 3418 dockDivider.setVisibility(View.GONE); 3419 } 3420 } 3421 }); 3422 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3423 mDividerAnimator.start(); 3424 } 3425 } 3426 } 3427} 3428