Workspace.java revision 42490a5aa093e5ff653b041538c9f3ddf2b3e65f
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.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetProviderInfo; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.IBinder; 43import android.os.Parcelable; 44import android.util.AttributeSet; 45import android.util.Log; 46import android.view.Display; 47import android.view.MotionEvent; 48import android.view.View; 49import android.view.ViewGroup; 50import android.view.animation.DecelerateInterpolator; 51import android.widget.ImageView; 52import android.widget.TextView; 53 54import com.android.launcher.R; 55import com.android.launcher2.FolderIcon.FolderRingAnimator; 56import com.android.launcher2.LauncherSettings.Favorites; 57 58import java.net.URISyntaxException; 59import java.util.ArrayList; 60import java.util.HashSet; 61import java.util.Iterator; 62import java.util.Set; 63 64/** 65 * The workspace is a wide area with a wallpaper and a finite number of pages. 66 * Each page contains a number of icons, folders or widgets the user can 67 * interact with. A workspace is meant to be used with a fixed width only. 68 */ 69public class Workspace extends SmoothPagedView 70 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 71 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 72 private static final String TAG = "Launcher.Workspace"; 73 74 // Y rotation to apply to the workspace screens 75 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 76 77 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 78 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 79 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 80 81 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 82 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 83 private static final int FLING_THRESHOLD_VELOCITY = 500; 84 85 // These animators are used to fade the children's outlines 86 private ObjectAnimator mChildrenOutlineFadeInAnimation; 87 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 88 private float mChildrenOutlineAlpha = 0; 89 90 // These properties refer to the background protection gradient used for AllApps and Customize 91 private ValueAnimator mBackgroundFadeInAnimation; 92 private ValueAnimator mBackgroundFadeOutAnimation; 93 private Drawable mBackground; 94 boolean mDrawBackground = true; 95 private float mBackgroundAlpha = 0; 96 private float mOverScrollMaxBackgroundAlpha = 0.0f; 97 98 private float mWallpaperScrollRatio = 1.0f; 99 100 private final WallpaperManager mWallpaperManager; 101 private IBinder mWindowToken; 102 private static final float WALLPAPER_SCREENS_SPAN = 2f; 103 104 private int mDefaultPage; 105 106 /** 107 * CellInfo for the cell that is currently being dragged 108 */ 109 private CellLayout.CellInfo mDragInfo; 110 111 /** 112 * Target drop area calculated during last acceptDrop call. 113 */ 114 private int[] mTargetCell = new int[2]; 115 private int mDragOverX = -1; 116 private int mDragOverY = -1; 117 118 static Rect mLandscapeCellLayoutMetrics = null; 119 static Rect mPortraitCellLayoutMetrics = null; 120 121 /** 122 * The CellLayout that is currently being dragged over 123 */ 124 private CellLayout mDragTargetLayout = null; 125 /** 126 * The CellLayout that we will show as glowing 127 */ 128 private CellLayout mDragOverlappingLayout = null; 129 130 /** 131 * The CellLayout which will be dropped to 132 */ 133 private CellLayout mDropToLayout = null; 134 135 private Launcher mLauncher; 136 private IconCache mIconCache; 137 private DragController mDragController; 138 139 // These are temporary variables to prevent having to allocate a new object just to 140 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 141 private int[] mTempCell = new int[2]; 142 private int[] mTempEstimate = new int[2]; 143 private float[] mDragViewVisualCenter = new float[2]; 144 private float[] mTempDragCoordinates = new float[2]; 145 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 146 private float[] mTempDragBottomRightCoordinates = new float[2]; 147 private Matrix mTempInverseMatrix = new Matrix(); 148 149 private SpringLoadedDragController mSpringLoadedDragController; 150 private float mSpringLoadedShrinkFactor; 151 152 private static final int DEFAULT_CELL_COUNT_X = 4; 153 private static final int DEFAULT_CELL_COUNT_Y = 4; 154 155 // State variable that indicates whether the pages are small (ie when you're 156 // in all apps or customize mode) 157 158 enum State { NORMAL, SPRING_LOADED, SMALL }; 159 private State mState = State.NORMAL; 160 private boolean mIsSwitchingState = false; 161 162 boolean mAnimatingViewIntoPlace = false; 163 boolean mIsDragOccuring = false; 164 boolean mChildrenLayersEnabled = true; 165 166 /** Is the user is dragging an item near the edge of a page? */ 167 private boolean mInScrollArea = false; 168 169 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 170 private Bitmap mDragOutline = null; 171 private final Rect mTempRect = new Rect(); 172 private final int[] mTempXY = new int[2]; 173 private float mOverscrollFade = 0; 174 private boolean mOverscrollTransformsSet; 175 public static final int DRAG_BITMAP_PADDING = 2; 176 private boolean mWorkspaceFadeInAdjacentScreens; 177 178 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 179 int mWallpaperWidth; 180 int mWallpaperHeight; 181 WallpaperOffsetInterpolator mWallpaperOffset; 182 boolean mUpdateWallpaperOffsetImmediately = false; 183 private Runnable mDelayedResizeRunnable; 184 private Runnable mDelayedSnapToPageRunnable; 185 private Point mDisplaySize = new Point(); 186 private boolean mIsStaticWallpaper; 187 private int mWallpaperTravelWidth; 188 private int mSpringLoadedPageSpacing; 189 private int mCameraDistance; 190 191 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 192 private static final int FOLDER_CREATION_TIMEOUT = 0; 193 private static final int REORDER_TIMEOUT = 250; 194 private final Alarm mFolderCreationAlarm = new Alarm(); 195 private final Alarm mReorderAlarm = new Alarm(); 196 private FolderRingAnimator mDragFolderRingAnimator = null; 197 private FolderIcon mDragOverFolderIcon = null; 198 private boolean mCreateUserFolderOnDrop = false; 199 private boolean mAddToExistingFolderOnDrop = false; 200 private DropTarget.DragEnforcer mDragEnforcer; 201 private float mMaxDistanceForFolderCreation; 202 203 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 204 private float mXDown; 205 private float mYDown; 206 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 207 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 208 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 209 210 // Relating to the animation of items being dropped externally 211 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 212 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 213 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 214 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 215 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 216 217 // Related to dragging, folder creation and reordering 218 private static final int DRAG_MODE_NONE = 0; 219 private static final int DRAG_MODE_CREATE_FOLDER = 1; 220 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 221 private static final int DRAG_MODE_REORDER = 3; 222 private int mDragMode = DRAG_MODE_NONE; 223 private int mLastReorderX = -1; 224 private int mLastReorderY = -1; 225 226 // These variables are used for storing the initial and final values during workspace animations 227 private int mSavedScrollX; 228 private float mSavedRotationY; 229 private float mSavedTranslationX; 230 private float mCurrentScaleX; 231 private float mCurrentScaleY; 232 private float mCurrentRotationY; 233 private float mCurrentTranslationX; 234 private float mCurrentTranslationY; 235 private float[] mOldTranslationXs; 236 private float[] mOldTranslationYs; 237 private float[] mOldScaleXs; 238 private float[] mOldScaleYs; 239 private float[] mOldBackgroundAlphas; 240 private float[] mOldAlphas; 241 private float[] mNewTranslationXs; 242 private float[] mNewTranslationYs; 243 private float[] mNewScaleXs; 244 private float[] mNewScaleYs; 245 private float[] mNewBackgroundAlphas; 246 private float[] mNewAlphas; 247 private float[] mNewRotationYs; 248 private float mTransitionProgress; 249 250 /** 251 * Used to inflate the Workspace from XML. 252 * 253 * @param context The application's context. 254 * @param attrs The attributes set containing the Workspace's customization values. 255 */ 256 public Workspace(Context context, AttributeSet attrs) { 257 this(context, attrs, 0); 258 } 259 260 /** 261 * Used to inflate the Workspace from XML. 262 * 263 * @param context The application's context. 264 * @param attrs The attributes set containing the Workspace's customization values. 265 * @param defStyle Unused. 266 */ 267 public Workspace(Context context, AttributeSet attrs, int defStyle) { 268 super(context, attrs, defStyle); 269 mContentIsRefreshable = false; 270 271 mDragEnforcer = new DropTarget.DragEnforcer(context); 272 // With workspace, data is available straight from the get-go 273 setDataIsReady(); 274 275 mLauncher = (Launcher) context; 276 final Resources res = getResources(); 277 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 278 mFadeInAdjacentScreens = false; 279 mWallpaperManager = WallpaperManager.getInstance(context); 280 281 int cellCountX = DEFAULT_CELL_COUNT_X; 282 int cellCountY = DEFAULT_CELL_COUNT_Y; 283 284 TypedArray a = context.obtainStyledAttributes(attrs, 285 R.styleable.Workspace, defStyle, 0); 286 287 if (LauncherApplication.isScreenLarge()) { 288 // Determine number of rows/columns dynamically 289 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 290 // Around that ratio we should make cells the same size in portrait and 291 // landscape 292 TypedArray actionBarSizeTypedArray = 293 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 294 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 295 296 Point minDims = new Point(); 297 Point maxDims = new Point(); 298 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 299 300 cellCountX = 1; 301 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 302 cellCountX++; 303 } 304 305 cellCountY = 1; 306 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 307 <= minDims.y) { 308 cellCountY++; 309 } 310 } 311 312 mSpringLoadedShrinkFactor = 313 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 314 mSpringLoadedPageSpacing = 315 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 316 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 317 318 // if the value is manually specified, use that instead 319 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 320 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 321 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 322 a.recycle(); 323 324 setOnHierarchyChangeListener(this); 325 326 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 327 setHapticFeedbackEnabled(false); 328 329 initWorkspace(); 330 331 // Disable multitouch across the workspace/all apps/customize tray 332 setMotionEventSplittingEnabled(true); 333 334 // Unless otherwise specified this view is important for accessibility. 335 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 336 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 337 } 338 } 339 340 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 341 // dimension if unsuccessful 342 public int[] estimateItemSize(int hSpan, int vSpan, 343 ItemInfo itemInfo, boolean springLoaded) { 344 int[] size = new int[2]; 345 if (getChildCount() > 0) { 346 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 347 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 348 size[0] = r.width(); 349 size[1] = r.height(); 350 if (springLoaded) { 351 size[0] *= mSpringLoadedShrinkFactor; 352 size[1] *= mSpringLoadedShrinkFactor; 353 } 354 return size; 355 } else { 356 size[0] = Integer.MAX_VALUE; 357 size[1] = Integer.MAX_VALUE; 358 return size; 359 } 360 } 361 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 362 int hCell, int vCell, int hSpan, int vSpan) { 363 Rect r = new Rect(); 364 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 365 return r; 366 } 367 368 public void onDragStart(DragSource source, Object info, int dragAction) { 369 mIsDragOccuring = true; 370 updateChildrenLayersEnabled(false); 371 mLauncher.lockScreenOrientation(); 372 setChildrenBackgroundAlphaMultipliers(1f); 373 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 374 InstallShortcutReceiver.enableInstallQueue(); 375 UninstallShortcutReceiver.enableUninstallQueue(); 376 } 377 378 public void onDragEnd() { 379 mIsDragOccuring = false; 380 updateChildrenLayersEnabled(false); 381 mLauncher.unlockScreenOrientation(false); 382 383 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 384 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 385 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 386 } 387 388 /** 389 * Initializes various states for this workspace. 390 */ 391 protected void initWorkspace() { 392 Context context = getContext(); 393 mCurrentPage = mDefaultPage; 394 Launcher.setScreen(mCurrentPage); 395 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 396 mIconCache = app.getIconCache(); 397 setWillNotDraw(false); 398 setChildrenDrawnWithCacheEnabled(true); 399 400 final Resources res = getResources(); 401 try { 402 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 403 } catch (Resources.NotFoundException e) { 404 // In this case, we will skip drawing background protection 405 } 406 407 mWallpaperOffset = new WallpaperOffsetInterpolator(); 408 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 409 display.getSize(mDisplaySize); 410 mWallpaperTravelWidth = (int) (mDisplaySize.x * 411 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 412 413 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 414 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 415 } 416 417 @Override 418 protected int getScrollMode() { 419 return SmoothPagedView.X_LARGE_MODE; 420 } 421 422 @Override 423 public void onChildViewAdded(View parent, View child) { 424 if (!(child instanceof CellLayout)) { 425 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 426 } 427 CellLayout cl = ((CellLayout) child); 428 cl.setOnInterceptTouchListener(this); 429 cl.setClickable(true); 430 cl.enableHardwareLayers(); 431 cl.setContentDescription(getContext().getString( 432 R.string.workspace_description_format, getChildCount())); 433 } 434 435 @Override 436 public void onChildViewRemoved(View parent, View child) { 437 } 438 439 protected boolean shouldDrawChild(View child) { 440 final CellLayout cl = (CellLayout) child; 441 return super.shouldDrawChild(child) && 442 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 443 cl.getBackgroundAlpha() > 0); 444 } 445 446 /** 447 * @return The open folder on the current screen, or null if there is none 448 */ 449 Folder getOpenFolder() { 450 DragLayer dragLayer = mLauncher.getDragLayer(); 451 int count = dragLayer.getChildCount(); 452 for (int i = 0; i < count; i++) { 453 View child = dragLayer.getChildAt(i); 454 if (child instanceof Folder) { 455 Folder folder = (Folder) child; 456 if (folder.getInfo().opened) 457 return folder; 458 } 459 } 460 return null; 461 } 462 463 boolean isTouchActive() { 464 return mTouchState != TOUCH_STATE_REST; 465 } 466 467 /** 468 * Adds the specified child in the specified screen. The position and dimension of 469 * the child are defined by x, y, spanX and spanY. 470 * 471 * @param child The child to add in one of the workspace's screens. 472 * @param screen The screen in which to add the child. 473 * @param x The X position of the child in the screen's grid. 474 * @param y The Y position of the child in the screen's grid. 475 * @param spanX The number of cells spanned horizontally by the child. 476 * @param spanY The number of cells spanned vertically by the child. 477 */ 478 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 479 addInScreen(child, container, screen, x, y, spanX, spanY, false); 480 } 481 482 /** 483 * Adds the specified child in the specified screen. The position and dimension of 484 * the child are defined by x, y, spanX and spanY. 485 * 486 * @param child The child to add in one of the workspace's screens. 487 * @param screen The screen in which to add the child. 488 * @param x The X position of the child in the screen's grid. 489 * @param y The Y position of the child in the screen's grid. 490 * @param spanX The number of cells spanned horizontally by the child. 491 * @param spanY The number of cells spanned vertically by the child. 492 * @param insert When true, the child is inserted at the beginning of the children list. 493 */ 494 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 495 boolean insert) { 496 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 497 if (screen < 0 || screen >= getChildCount()) { 498 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 499 + " (was " + screen + "); skipping child"); 500 return; 501 } 502 } 503 504 final CellLayout layout; 505 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 506 layout = mLauncher.getHotseat().getLayout(); 507 child.setOnKeyListener(null); 508 509 // Hide folder title in the hotseat 510 if (child instanceof FolderIcon) { 511 ((FolderIcon) child).setTextVisible(false); 512 } 513 514 if (screen < 0) { 515 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 516 } else { 517 // Note: We do this to ensure that the hotseat is always laid out in the orientation 518 // of the hotseat in order regardless of which orientation they were added 519 x = mLauncher.getHotseat().getCellXFromOrder(screen); 520 y = mLauncher.getHotseat().getCellYFromOrder(screen); 521 } 522 } else { 523 // Show folder title if not in the hotseat 524 if (child instanceof FolderIcon) { 525 ((FolderIcon) child).setTextVisible(true); 526 } 527 528 layout = (CellLayout) getChildAt(screen); 529 child.setOnKeyListener(new IconKeyEventListener()); 530 } 531 532 LayoutParams genericLp = child.getLayoutParams(); 533 CellLayout.LayoutParams lp; 534 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 535 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 536 } else { 537 lp = (CellLayout.LayoutParams) genericLp; 538 lp.cellX = x; 539 lp.cellY = y; 540 lp.cellHSpan = spanX; 541 lp.cellVSpan = spanY; 542 } 543 544 if (spanX < 0 && spanY < 0) { 545 lp.isLockedToGrid = false; 546 } 547 548 // Get the canonical child id to uniquely represent this view in this screen 549 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 550 boolean markCellsAsOccupied = !(child instanceof Folder); 551 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 552 // TODO: This branch occurs when the workspace is adding views 553 // outside of the defined grid 554 // maybe we should be deleting these items from the LauncherModel? 555 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 556 } 557 558 if (!(child instanceof Folder)) { 559 child.setHapticFeedbackEnabled(false); 560 child.setOnLongClickListener(mLongClickListener); 561 } 562 if (child instanceof DropTarget) { 563 mDragController.addDropTarget((DropTarget) child); 564 } 565 } 566 567 /** 568 * Check if the point (x, y) hits a given page. 569 */ 570 private boolean hitsPage(int index, float x, float y) { 571 final View page = getChildAt(index); 572 if (page != null) { 573 float[] localXY = { x, y }; 574 mapPointFromSelfToChild(page, localXY); 575 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 576 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 577 } 578 return false; 579 } 580 581 @Override 582 protected boolean hitsPreviousPage(float x, float y) { 583 // mNextPage is set to INVALID_PAGE whenever we are stationary. 584 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 585 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 586 587 // Only allow tap to next page on large devices, where there's significant margin outside 588 // the active workspace 589 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 590 } 591 592 @Override 593 protected boolean hitsNextPage(float x, float y) { 594 // mNextPage is set to INVALID_PAGE whenever we are stationary. 595 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 596 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 597 598 // Only allow tap to next page on large devices, where there's significant margin outside 599 // the active workspace 600 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 601 } 602 603 /** 604 * Called directly from a CellLayout (not by the framework), after we've been added as a 605 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 606 * that it should intercept touch events, which is not something that is normally supported. 607 */ 608 @Override 609 public boolean onTouch(View v, MotionEvent event) { 610 return (isSmall() || !isFinishedSwitchingState()); 611 } 612 613 public boolean isSwitchingState() { 614 return mIsSwitchingState; 615 } 616 617 /** This differs from isSwitchingState in that we take into account how far the transition 618 * has completed. */ 619 public boolean isFinishedSwitchingState() { 620 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 621 } 622 623 protected void onWindowVisibilityChanged (int visibility) { 624 mLauncher.onWindowVisibilityChanged(visibility); 625 } 626 627 @Override 628 public boolean dispatchUnhandledMove(View focused, int direction) { 629 if (isSmall() || !isFinishedSwitchingState()) { 630 // when the home screens are shrunken, shouldn't allow side-scrolling 631 return false; 632 } 633 return super.dispatchUnhandledMove(focused, direction); 634 } 635 636 @Override 637 public boolean onInterceptTouchEvent(MotionEvent ev) { 638 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 639 case MotionEvent.ACTION_DOWN: 640 mXDown = ev.getX(); 641 mYDown = ev.getY(); 642 break; 643 case MotionEvent.ACTION_POINTER_UP: 644 case MotionEvent.ACTION_UP: 645 if (mTouchState == TOUCH_STATE_REST) { 646 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 647 if (!currentPage.lastDownOnOccupiedCell()) { 648 onWallpaperTap(ev); 649 } 650 } 651 } 652 return super.onInterceptTouchEvent(ev); 653 } 654 655 protected void reinflateWidgetsIfNecessary() { 656 final int clCount = getChildCount(); 657 for (int i = 0; i < clCount; i++) { 658 CellLayout cl = (CellLayout) getChildAt(i); 659 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 660 final int itemCount = swc.getChildCount(); 661 for (int j = 0; j < itemCount; j++) { 662 View v = swc.getChildAt(j); 663 664 if (v.getTag() instanceof LauncherAppWidgetInfo) { 665 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 666 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 667 if (lahv != null && lahv.orientationChangedSincedInflation()) { 668 mLauncher.removeAppWidget(info); 669 // Remove the current widget which is inflated with the wrong orientation 670 cl.removeView(lahv); 671 mLauncher.bindAppWidget(info); 672 } 673 } 674 } 675 } 676 } 677 678 @Override 679 protected void determineScrollingStart(MotionEvent ev) { 680 if (isSmall()) return; 681 if (!isFinishedSwitchingState()) return; 682 683 float deltaX = Math.abs(ev.getX() - mXDown); 684 float deltaY = Math.abs(ev.getY() - mYDown); 685 686 if (Float.compare(deltaX, 0f) == 0) return; 687 688 float slope = deltaY / deltaX; 689 float theta = (float) Math.atan(slope); 690 691 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 692 cancelCurrentPageLongPress(); 693 } 694 695 if (theta > MAX_SWIPE_ANGLE) { 696 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 697 return; 698 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 699 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 700 // increase the touch slop to make it harder to begin scrolling the workspace. This 701 // results in vertically scrolling widgets to more easily. The higher the angle, the 702 // more we increase touch slop. 703 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 704 float extraRatio = (float) 705 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 706 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 707 } else { 708 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 709 super.determineScrollingStart(ev); 710 } 711 } 712 713 @Override 714 protected boolean isScrollingIndicatorEnabled() { 715 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 716 } 717 718 protected void onPageBeginMoving() { 719 super.onPageBeginMoving(); 720 721 if (isHardwareAccelerated()) { 722 updateChildrenLayersEnabled(false); 723 } else { 724 if (mNextPage != INVALID_PAGE) { 725 // we're snapping to a particular screen 726 enableChildrenCache(mCurrentPage, mNextPage); 727 } else { 728 // this is when user is actively dragging a particular screen, they might 729 // swipe it either left or right (but we won't advance by more than one screen) 730 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 731 } 732 } 733 734 // Only show page outlines as we pan if we are on large screen 735 if (LauncherApplication.isScreenLarge()) { 736 showOutlines(); 737 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 738 } 739 740 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 741 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 742 if (!mWorkspaceFadeInAdjacentScreens) { 743 for (int i = 0; i < getChildCount(); ++i) { 744 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 745 } 746 } 747 748 // Show the scroll indicator as you pan the page 749 showScrollingIndicator(false); 750 } 751 752 protected void onPageEndMoving() { 753 super.onPageEndMoving(); 754 755 if (isHardwareAccelerated()) { 756 updateChildrenLayersEnabled(false); 757 } else { 758 clearChildrenCache(); 759 } 760 761 762 if (mDragController.isDragging()) { 763 if (isSmall()) { 764 // If we are in springloaded mode, then force an event to check if the current touch 765 // is under a new page (to scroll to) 766 mDragController.forceMoveEvent(); 767 } 768 } else { 769 // If we are not mid-dragging, hide the page outlines if we are on a large screen 770 if (LauncherApplication.isScreenLarge()) { 771 hideOutlines(); 772 } 773 774 // Hide the scroll indicator as you pan the page 775 if (!mDragController.isDragging()) { 776 hideScrollingIndicator(false); 777 } 778 } 779 mOverScrollMaxBackgroundAlpha = 0.0f; 780 781 if (mDelayedResizeRunnable != null) { 782 mDelayedResizeRunnable.run(); 783 mDelayedResizeRunnable = null; 784 } 785 786 if (mDelayedSnapToPageRunnable != null) { 787 mDelayedSnapToPageRunnable.run(); 788 mDelayedSnapToPageRunnable = null; 789 } 790 } 791 792 @Override 793 protected void notifyPageSwitchListener() { 794 super.notifyPageSwitchListener(); 795 Launcher.setScreen(mCurrentPage); 796 }; 797 798 // As a ratio of screen height, the total distance we want the parallax effect to span 799 // horizontally 800 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 801 float aspectRatio = width / (float) height; 802 803 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 804 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 805 // We will use these two data points to extrapolate how much the wallpaper parallax effect 806 // to span (ie travel) at any aspect ratio: 807 808 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 809 final float ASPECT_RATIO_PORTRAIT = 10/16f; 810 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 811 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 812 813 // To find out the desired width at different aspect ratios, we use the following two 814 // formulas, where the coefficient on x is the aspect ratio (width/height): 815 // (16/10)x + y = 1.5 816 // (10/16)x + y = 1.2 817 // We solve for x and y and end up with a final formula: 818 final float x = 819 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 820 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 821 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 822 return x * aspectRatio + y; 823 } 824 825 // The range of scroll values for Workspace 826 private int getScrollRange() { 827 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 828 } 829 830 protected void setWallpaperDimension() { 831 Point minDims = new Point(); 832 Point maxDims = new Point(); 833 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 834 835 final int maxDim = Math.max(maxDims.x, maxDims.y); 836 final int minDim = Math.min(minDims.x, minDims.y); 837 838 // We need to ensure that there is enough extra space in the wallpaper for the intended 839 // parallax effects 840 if (LauncherApplication.isScreenLarge()) { 841 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 842 mWallpaperHeight = maxDim; 843 } else { 844 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 845 mWallpaperHeight = maxDim; 846 } 847 new Thread("setWallpaperDimension") { 848 public void run() { 849 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 850 } 851 }.start(); 852 } 853 854 private float wallpaperOffsetForCurrentScroll() { 855 // Set wallpaper offset steps (1 / (number of screens - 1)) 856 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 857 858 // For the purposes of computing the scrollRange and overScrollOffset, we assume 859 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 860 // there's no discrepancy between the wallpaper offset for a given page. 861 float layoutScale = mLayoutScale; 862 mLayoutScale = 1f; 863 int scrollRange = getScrollRange(); 864 865 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 866 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 867 adjustedScrollX *= mWallpaperScrollRatio; 868 mLayoutScale = layoutScale; 869 870 float scrollProgress = 871 adjustedScrollX / (float) scrollRange; 872 873 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 874 // The wallpaper travel width is how far, from left to right, the wallpaper will move 875 // at this orientation. On tablets in portrait mode we don't move all the way to the 876 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 877 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 878 879 float offsetInDips = wallpaperTravelWidth * scrollProgress + 880 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 881 float offset = offsetInDips / (float) mWallpaperWidth; 882 return offset; 883 } else { 884 return scrollProgress; 885 } 886 } 887 888 private void syncWallpaperOffsetWithScroll() { 889 final boolean enableWallpaperEffects = isHardwareAccelerated(); 890 if (enableWallpaperEffects) { 891 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 892 } 893 } 894 895 public void updateWallpaperOffsetImmediately() { 896 mUpdateWallpaperOffsetImmediately = true; 897 } 898 899 private void updateWallpaperOffsets() { 900 boolean updateNow = false; 901 boolean keepUpdating = true; 902 if (mUpdateWallpaperOffsetImmediately) { 903 updateNow = true; 904 keepUpdating = false; 905 mWallpaperOffset.jumpToFinal(); 906 mUpdateWallpaperOffsetImmediately = false; 907 } else { 908 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 909 } 910 if (updateNow) { 911 if (mWindowToken != null) { 912 mWallpaperManager.setWallpaperOffsets(mWindowToken, 913 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 914 } 915 } 916 if (keepUpdating) { 917 invalidate(); 918 } 919 } 920 921 @Override 922 protected void updateCurrentPageScroll() { 923 super.updateCurrentPageScroll(); 924 computeWallpaperScrollRatio(mCurrentPage); 925 } 926 927 @Override 928 protected void snapToPage(int whichPage) { 929 super.snapToPage(whichPage); 930 computeWallpaperScrollRatio(whichPage); 931 } 932 933 @Override 934 protected void snapToPage(int whichPage, int duration) { 935 super.snapToPage(whichPage, duration); 936 computeWallpaperScrollRatio(whichPage); 937 } 938 939 protected void snapToPage(int whichPage, Runnable r) { 940 if (mDelayedSnapToPageRunnable != null) { 941 mDelayedSnapToPageRunnable.run(); 942 } 943 mDelayedSnapToPageRunnable = r; 944 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 945 } 946 947 private void computeWallpaperScrollRatio(int page) { 948 // Here, we determine what the desired scroll would be with and without a layout scale, 949 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 950 // as though there is no layout scale. 951 float layoutScale = mLayoutScale; 952 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 953 mLayoutScale = 1.0f; 954 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 955 mLayoutScale = layoutScale; 956 if (scaled > 0) { 957 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 958 } else { 959 mWallpaperScrollRatio = 1f; 960 } 961 } 962 963 class WallpaperOffsetInterpolator { 964 float mFinalHorizontalWallpaperOffset = 0.0f; 965 float mFinalVerticalWallpaperOffset = 0.5f; 966 float mHorizontalWallpaperOffset = 0.0f; 967 float mVerticalWallpaperOffset = 0.5f; 968 long mLastWallpaperOffsetUpdateTime; 969 boolean mIsMovingFast; 970 boolean mOverrideHorizontalCatchupConstant; 971 float mHorizontalCatchupConstant = 0.35f; 972 float mVerticalCatchupConstant = 0.35f; 973 974 public WallpaperOffsetInterpolator() { 975 } 976 977 public void setOverrideHorizontalCatchupConstant(boolean override) { 978 mOverrideHorizontalCatchupConstant = override; 979 } 980 981 public void setHorizontalCatchupConstant(float f) { 982 mHorizontalCatchupConstant = f; 983 } 984 985 public void setVerticalCatchupConstant(float f) { 986 mVerticalCatchupConstant = f; 987 } 988 989 public boolean computeScrollOffset() { 990 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 991 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 992 mIsMovingFast = false; 993 return false; 994 } 995 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 996 997 long currentTime = System.currentTimeMillis(); 998 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 999 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1000 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1001 1002 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1003 if (!mIsMovingFast && xdiff > 0.07) { 1004 mIsMovingFast = true; 1005 } 1006 1007 float fractionToCatchUpIn1MsHorizontal; 1008 if (mOverrideHorizontalCatchupConstant) { 1009 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1010 } else if (mIsMovingFast) { 1011 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1012 } else { 1013 // slow 1014 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1015 } 1016 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1017 1018 fractionToCatchUpIn1MsHorizontal /= 33f; 1019 fractionToCatchUpIn1MsVertical /= 33f; 1020 1021 final float UPDATE_THRESHOLD = 0.00001f; 1022 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1023 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1024 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1025 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1026 1027 // Don't have any lag between workspace and wallpaper on non-large devices 1028 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1029 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1030 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1031 } else { 1032 float percentToCatchUpVertical = 1033 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1034 float percentToCatchUpHorizontal = 1035 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1036 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1037 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1038 } 1039 1040 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1041 return true; 1042 } 1043 1044 public float getCurrX() { 1045 return mHorizontalWallpaperOffset; 1046 } 1047 1048 public float getFinalX() { 1049 return mFinalHorizontalWallpaperOffset; 1050 } 1051 1052 public float getCurrY() { 1053 return mVerticalWallpaperOffset; 1054 } 1055 1056 public float getFinalY() { 1057 return mFinalVerticalWallpaperOffset; 1058 } 1059 1060 public void setFinalX(float x) { 1061 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1062 } 1063 1064 public void setFinalY(float y) { 1065 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1066 } 1067 1068 public void jumpToFinal() { 1069 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1070 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1071 } 1072 } 1073 1074 @Override 1075 public void computeScroll() { 1076 super.computeScroll(); 1077 syncWallpaperOffsetWithScroll(); 1078 } 1079 1080 void showOutlines() { 1081 if (!isSmall() && !mIsSwitchingState) { 1082 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1083 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1084 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1085 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1086 mChildrenOutlineFadeInAnimation.start(); 1087 } 1088 } 1089 1090 void hideOutlines() { 1091 if (!isSmall() && !mIsSwitchingState) { 1092 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1093 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1094 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1095 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1096 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1097 mChildrenOutlineFadeOutAnimation.start(); 1098 } 1099 } 1100 1101 public void showOutlinesTemporarily() { 1102 if (!mIsPageMoving && !isTouchActive()) { 1103 snapToPage(mCurrentPage); 1104 } 1105 } 1106 1107 public void setChildrenOutlineAlpha(float alpha) { 1108 mChildrenOutlineAlpha = alpha; 1109 for (int i = 0; i < getChildCount(); i++) { 1110 CellLayout cl = (CellLayout) getChildAt(i); 1111 cl.setBackgroundAlpha(alpha); 1112 } 1113 } 1114 1115 public float getChildrenOutlineAlpha() { 1116 return mChildrenOutlineAlpha; 1117 } 1118 1119 void disableBackground() { 1120 mDrawBackground = false; 1121 } 1122 void enableBackground() { 1123 mDrawBackground = true; 1124 } 1125 1126 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1127 if (mBackground == null) return; 1128 if (mBackgroundFadeInAnimation != null) { 1129 mBackgroundFadeInAnimation.cancel(); 1130 mBackgroundFadeInAnimation = null; 1131 } 1132 if (mBackgroundFadeOutAnimation != null) { 1133 mBackgroundFadeOutAnimation.cancel(); 1134 mBackgroundFadeOutAnimation = null; 1135 } 1136 float startAlpha = getBackgroundAlpha(); 1137 if (finalAlpha != startAlpha) { 1138 if (animated) { 1139 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1140 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1141 public void onAnimationUpdate(ValueAnimator animation) { 1142 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1143 } 1144 }); 1145 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1146 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1147 mBackgroundFadeOutAnimation.start(); 1148 } else { 1149 setBackgroundAlpha(finalAlpha); 1150 } 1151 } 1152 } 1153 1154 public void setBackgroundAlpha(float alpha) { 1155 if (alpha != mBackgroundAlpha) { 1156 mBackgroundAlpha = alpha; 1157 invalidate(); 1158 } 1159 } 1160 1161 public float getBackgroundAlpha() { 1162 return mBackgroundAlpha; 1163 } 1164 1165 float backgroundAlphaInterpolator(float r) { 1166 float pivotA = 0.1f; 1167 float pivotB = 0.4f; 1168 if (r < pivotA) { 1169 return 0; 1170 } else if (r > pivotB) { 1171 return 1.0f; 1172 } else { 1173 return (r - pivotA)/(pivotB - pivotA); 1174 } 1175 } 1176 1177 float overScrollBackgroundAlphaInterpolator(float r) { 1178 float threshold = 0.08f; 1179 1180 if (r > mOverScrollMaxBackgroundAlpha) { 1181 mOverScrollMaxBackgroundAlpha = r; 1182 } else if (r < mOverScrollMaxBackgroundAlpha) { 1183 r = mOverScrollMaxBackgroundAlpha; 1184 } 1185 1186 return Math.min(r / threshold, 1.0f); 1187 } 1188 1189 private void updatePageAlphaValues(int screenCenter) { 1190 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1191 if (mWorkspaceFadeInAdjacentScreens && 1192 mState == State.NORMAL && 1193 !mIsSwitchingState && 1194 !isInOverscroll) { 1195 for (int i = 0; i < getChildCount(); i++) { 1196 CellLayout child = (CellLayout) getChildAt(i); 1197 if (child != null) { 1198 float scrollProgress = getScrollProgress(screenCenter, child, i); 1199 float alpha = 1 - Math.abs(scrollProgress); 1200 child.getShortcutsAndWidgets().setAlpha(alpha); 1201 if (!mIsDragOccuring) { 1202 child.setBackgroundAlphaMultiplier( 1203 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1204 } else { 1205 child.setBackgroundAlphaMultiplier(1f); 1206 } 1207 } 1208 } 1209 } 1210 } 1211 1212 private void setChildrenBackgroundAlphaMultipliers(float a) { 1213 for (int i = 0; i < getChildCount(); i++) { 1214 CellLayout child = (CellLayout) getChildAt(i); 1215 child.setBackgroundAlphaMultiplier(a); 1216 } 1217 } 1218 1219 @Override 1220 protected void screenScrolled(int screenCenter) { 1221 super.screenScrolled(screenCenter); 1222 1223 updatePageAlphaValues(screenCenter); 1224 1225 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1226 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1227 CellLayout cl = (CellLayout) getChildAt(index); 1228 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1229 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1230 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1231 cl.setRotationY(rotation); 1232 setFadeForOverScroll(Math.abs(scrollProgress)); 1233 if (!mOverscrollTransformsSet) { 1234 mOverscrollTransformsSet = true; 1235 cl.setCameraDistance(mDensity * mCameraDistance); 1236 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1237 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1238 cl.setOverscrollTransformsDirty(true); 1239 } 1240 } else { 1241 if (mOverscrollFade != 0) { 1242 setFadeForOverScroll(0); 1243 } 1244 if (mOverscrollTransformsSet) { 1245 mOverscrollTransformsSet = false; 1246 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1247 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1248 } 1249 } 1250 } 1251 1252 @Override 1253 protected void overScroll(float amount) { 1254 acceleratedOverScroll(amount); 1255 } 1256 1257 protected void onAttachedToWindow() { 1258 super.onAttachedToWindow(); 1259 mWindowToken = getWindowToken(); 1260 computeScroll(); 1261 mDragController.setWindowToken(mWindowToken); 1262 } 1263 1264 protected void onDetachedFromWindow() { 1265 mWindowToken = null; 1266 } 1267 1268 @Override 1269 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1270 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1271 mUpdateWallpaperOffsetImmediately = true; 1272 } 1273 super.onLayout(changed, left, top, right, bottom); 1274 } 1275 1276 @Override 1277 protected void onDraw(Canvas canvas) { 1278 updateWallpaperOffsets(); 1279 1280 // Draw the background gradient if necessary 1281 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1282 int alpha = (int) (mBackgroundAlpha * 255); 1283 mBackground.setAlpha(alpha); 1284 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1285 getMeasuredHeight()); 1286 mBackground.draw(canvas); 1287 } 1288 1289 super.onDraw(canvas); 1290 } 1291 1292 boolean isDrawingBackgroundGradient() { 1293 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1294 } 1295 1296 @Override 1297 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1298 if (!mLauncher.isAllAppsVisible()) { 1299 final Folder openFolder = getOpenFolder(); 1300 if (openFolder != null) { 1301 return openFolder.requestFocus(direction, previouslyFocusedRect); 1302 } else { 1303 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1304 } 1305 } 1306 return false; 1307 } 1308 1309 @Override 1310 public int getDescendantFocusability() { 1311 if (isSmall()) { 1312 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1313 } 1314 return super.getDescendantFocusability(); 1315 } 1316 1317 @Override 1318 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1319 if (!mLauncher.isAllAppsVisible()) { 1320 final Folder openFolder = getOpenFolder(); 1321 if (openFolder != null) { 1322 openFolder.addFocusables(views, direction); 1323 } else { 1324 super.addFocusables(views, direction, focusableMode); 1325 } 1326 } 1327 } 1328 1329 public boolean isSmall() { 1330 return mState == State.SMALL || mState == State.SPRING_LOADED; 1331 } 1332 1333 void enableChildrenCache(int fromPage, int toPage) { 1334 if (fromPage > toPage) { 1335 final int temp = fromPage; 1336 fromPage = toPage; 1337 toPage = temp; 1338 } 1339 1340 final int screenCount = getChildCount(); 1341 1342 fromPage = Math.max(fromPage, 0); 1343 toPage = Math.min(toPage, screenCount - 1); 1344 1345 for (int i = fromPage; i <= toPage; i++) { 1346 final CellLayout layout = (CellLayout) getChildAt(i); 1347 layout.setChildrenDrawnWithCacheEnabled(true); 1348 layout.setChildrenDrawingCacheEnabled(true); 1349 } 1350 } 1351 1352 void clearChildrenCache() { 1353 final int screenCount = getChildCount(); 1354 for (int i = 0; i < screenCount; i++) { 1355 final CellLayout layout = (CellLayout) getChildAt(i); 1356 layout.setChildrenDrawnWithCacheEnabled(false); 1357 // In software mode, we don't want the items to continue to be drawn into bitmaps 1358 if (!isHardwareAccelerated()) { 1359 layout.setChildrenDrawingCacheEnabled(false); 1360 } 1361 } 1362 } 1363 1364 1365 private void updateChildrenLayersEnabled(boolean force) { 1366 boolean small = mState == State.SMALL || mIsSwitchingState; 1367 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1368 1369 if (enableChildrenLayers != mChildrenLayersEnabled) { 1370 mChildrenLayersEnabled = enableChildrenLayers; 1371 for (int i = 0; i < getPageCount(); i++) { 1372 CellLayout cl = (CellLayout) getChildAt(i); 1373 cl.getShortcutsAndWidgets().setLayerType( 1374 mChildrenLayersEnabled ? LAYER_TYPE_HARDWARE : LAYER_TYPE_NONE, null); 1375 } 1376 } 1377 } 1378 1379 public void buildPageHardwareLayers() { 1380 // force layers to be enabled just for the call to buildLayer 1381 updateChildrenLayersEnabled(true); 1382 if (getWindowToken() != null) { 1383 final int childCount = getChildCount(); 1384 for (int i = 0; i < childCount; i++) { 1385 CellLayout cl = (CellLayout) getChildAt(i); 1386 cl.getShortcutsAndWidgets().buildLayer(); 1387 } 1388 } 1389 updateChildrenLayersEnabled(false); 1390 } 1391 1392 protected void onWallpaperTap(MotionEvent ev) { 1393 final int[] position = mTempCell; 1394 getLocationOnScreen(position); 1395 1396 int pointerIndex = ev.getActionIndex(); 1397 position[0] += (int) ev.getX(pointerIndex); 1398 position[1] += (int) ev.getY(pointerIndex); 1399 1400 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1401 ev.getAction() == MotionEvent.ACTION_UP 1402 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1403 position[0], position[1], 0, null); 1404 } 1405 1406 /* 1407 * This interpolator emulates the rate at which the perceived scale of an object changes 1408 * as its distance from a camera increases. When this interpolator is applied to a scale 1409 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1410 * from the camera. 1411 */ 1412 static class ZInterpolator implements TimeInterpolator { 1413 private float focalLength; 1414 1415 public ZInterpolator(float foc) { 1416 focalLength = foc; 1417 } 1418 1419 public float getInterpolation(float input) { 1420 return (1.0f - focalLength / (focalLength + input)) / 1421 (1.0f - focalLength / (focalLength + 1.0f)); 1422 } 1423 } 1424 1425 /* 1426 * The exact reverse of ZInterpolator. 1427 */ 1428 static class InverseZInterpolator implements TimeInterpolator { 1429 private ZInterpolator zInterpolator; 1430 public InverseZInterpolator(float foc) { 1431 zInterpolator = new ZInterpolator(foc); 1432 } 1433 public float getInterpolation(float input) { 1434 return 1 - zInterpolator.getInterpolation(1 - input); 1435 } 1436 } 1437 1438 /* 1439 * ZInterpolator compounded with an ease-out. 1440 */ 1441 static class ZoomOutInterpolator implements TimeInterpolator { 1442 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1443 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1444 1445 public float getInterpolation(float input) { 1446 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1447 } 1448 } 1449 1450 /* 1451 * InvereZInterpolator compounded with an ease-out. 1452 */ 1453 static class ZoomInInterpolator implements TimeInterpolator { 1454 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1455 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1456 1457 public float getInterpolation(float input) { 1458 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1459 } 1460 } 1461 1462 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1463 1464 /* 1465 * 1466 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1467 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1468 * 1469 * These methods mark the appropriate pages as accepting drops (which alters their visual 1470 * appearance). 1471 * 1472 */ 1473 public void onDragStartedWithItem(View v) { 1474 final Canvas canvas = new Canvas(); 1475 1476 // The outline is used to visualize where the item will land if dropped 1477 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1478 } 1479 1480 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1481 final Canvas canvas = new Canvas(); 1482 1483 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1484 1485 // The outline is used to visualize where the item will land if dropped 1486 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1487 size[1], clipAlpha); 1488 } 1489 1490 public void exitWidgetResizeMode() { 1491 DragLayer dragLayer = mLauncher.getDragLayer(); 1492 dragLayer.clearAllResizeFrames(); 1493 } 1494 1495 private void initAnimationArrays() { 1496 final int childCount = getChildCount(); 1497 if (mOldTranslationXs != null) return; 1498 mOldTranslationXs = new float[childCount]; 1499 mOldTranslationYs = new float[childCount]; 1500 mOldScaleXs = new float[childCount]; 1501 mOldScaleYs = new float[childCount]; 1502 mOldBackgroundAlphas = new float[childCount]; 1503 mOldAlphas = new float[childCount]; 1504 mNewTranslationXs = new float[childCount]; 1505 mNewTranslationYs = new float[childCount]; 1506 mNewScaleXs = new float[childCount]; 1507 mNewScaleYs = new float[childCount]; 1508 mNewBackgroundAlphas = new float[childCount]; 1509 mNewAlphas = new float[childCount]; 1510 mNewRotationYs = new float[childCount]; 1511 } 1512 1513 Animator getChangeStateAnimation(final State state, boolean animated) { 1514 return getChangeStateAnimation(state, animated, 0); 1515 } 1516 1517 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1518 if (mState == state) { 1519 return null; 1520 } 1521 1522 // Initialize animation arrays for the first time if necessary 1523 initAnimationArrays(); 1524 1525 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1526 1527 // Stop any scrolling, move to the current page right away 1528 setCurrentPage(getNextPage()); 1529 1530 final State oldState = mState; 1531 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1532 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1533 final boolean oldStateIsSmall = (oldState == State.SMALL); 1534 mState = state; 1535 final boolean stateIsNormal = (state == State.NORMAL); 1536 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1537 final boolean stateIsSmall = (state == State.SMALL); 1538 float finalScaleFactor = 1.0f; 1539 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1540 float translationX = 0; 1541 float translationY = 0; 1542 boolean zoomIn = true; 1543 1544 if (state != State.NORMAL) { 1545 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1546 setPageSpacing(mSpringLoadedPageSpacing); 1547 if (oldStateIsNormal && stateIsSmall) { 1548 zoomIn = false; 1549 setLayoutScale(finalScaleFactor); 1550 updateChildrenLayersEnabled(false); 1551 } else { 1552 finalBackgroundAlpha = 1.0f; 1553 setLayoutScale(finalScaleFactor); 1554 } 1555 } else { 1556 setPageSpacing(PagedView.AUTOMATIC_PAGE_SPACING); 1557 setLayoutScale(1.0f); 1558 } 1559 1560 final int duration = zoomIn ? 1561 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1562 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1563 for (int i = 0; i < getChildCount(); i++) { 1564 final CellLayout cl = (CellLayout) getChildAt(i); 1565 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1566 (i == mCurrentPage)) ? 1f : 0f; 1567 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1568 float initialAlpha = currentAlpha; 1569 1570 // Determine the pages alpha during the state transition 1571 if ((oldStateIsSmall && stateIsNormal) || 1572 (oldStateIsNormal && stateIsSmall)) { 1573 // To/from workspace - only show the current page unless the transition is not 1574 // animated and the animation end callback below doesn't run; 1575 // or, if we're in spring-loaded mode 1576 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1577 finalAlpha = 1f; 1578 } else { 1579 initialAlpha = 0f; 1580 finalAlpha = 0f; 1581 } 1582 } 1583 1584 mOldAlphas[i] = initialAlpha; 1585 mNewAlphas[i] = finalAlpha; 1586 if (animated) { 1587 mOldTranslationXs[i] = cl.getTranslationX(); 1588 mOldTranslationYs[i] = cl.getTranslationY(); 1589 mOldScaleXs[i] = cl.getScaleX(); 1590 mOldScaleYs[i] = cl.getScaleY(); 1591 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1592 1593 mNewTranslationXs[i] = translationX; 1594 mNewTranslationYs[i] = translationY; 1595 mNewScaleXs[i] = finalScaleFactor; 1596 mNewScaleYs[i] = finalScaleFactor; 1597 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1598 } else { 1599 cl.setTranslationX(translationX); 1600 cl.setTranslationY(translationY); 1601 cl.setScaleX(finalScaleFactor); 1602 cl.setScaleY(finalScaleFactor); 1603 cl.setBackgroundAlpha(finalBackgroundAlpha); 1604 cl.setShortcutAndWidgetAlpha(finalAlpha); 1605 } 1606 } 1607 1608 if (animated) { 1609 for (int index = 0; index < getChildCount(); index++) { 1610 final int i = index; 1611 final CellLayout cl = (CellLayout) getChildAt(i); 1612 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1613 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1614 cl.setTranslationX(mNewTranslationXs[i]); 1615 cl.setTranslationY(mNewTranslationYs[i]); 1616 cl.setScaleX(mNewScaleXs[i]); 1617 cl.setScaleY(mNewScaleYs[i]); 1618 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1619 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1620 cl.setRotationY(mNewRotationYs[i]); 1621 } else { 1622 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1623 a.translationX(mNewTranslationXs[i]) 1624 .translationY(mNewTranslationYs[i]) 1625 .scaleX(mNewScaleXs[i]) 1626 .scaleY(mNewScaleYs[i]) 1627 .setDuration(duration) 1628 .setInterpolator(mZoomInInterpolator); 1629 anim.play(a); 1630 1631 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1632 LauncherViewPropertyAnimator alphaAnim = 1633 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1634 alphaAnim.alpha(mNewAlphas[i]) 1635 .setDuration(duration) 1636 .setInterpolator(mZoomInInterpolator); 1637 anim.play(alphaAnim); 1638 } 1639 if (mOldBackgroundAlphas[i] != 0 || 1640 mNewBackgroundAlphas[i] != 0) { 1641 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1642 bgAnim.setInterpolator(mZoomInInterpolator); 1643 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1644 public void onAnimationUpdate(float a, float b) { 1645 cl.setBackgroundAlpha( 1646 a * mOldBackgroundAlphas[i] + 1647 b * mNewBackgroundAlphas[i]); 1648 } 1649 }); 1650 anim.play(bgAnim); 1651 } 1652 } 1653 } 1654 buildPageHardwareLayers(); 1655 anim.setStartDelay(delay); 1656 } 1657 1658 if (stateIsSpringLoaded) { 1659 // Right now we're covered by Apps Customize 1660 // Show the background gradient immediately, so the gradient will 1661 // be showing once AppsCustomize disappears 1662 animateBackgroundGradient(getResources().getInteger( 1663 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1664 } else { 1665 // Fade the background gradient away 1666 animateBackgroundGradient(0f, true); 1667 } 1668 return anim; 1669 } 1670 1671 @Override 1672 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1673 mIsSwitchingState = true; 1674 cancelScrollingIndicatorAnimations(); 1675 } 1676 1677 @Override 1678 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1679 } 1680 1681 @Override 1682 public void onLauncherTransitionStep(Launcher l, float t) { 1683 mTransitionProgress = t; 1684 } 1685 1686 @Override 1687 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1688 mIsSwitchingState = false; 1689 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1690 updateChildrenLayersEnabled(false); 1691 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1692 // ensure that only the current page is visible during (and subsequently, after) the 1693 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1694 // visibility after the transition animation. 1695 if (!mWorkspaceFadeInAdjacentScreens) { 1696 for (int i = 0; i < getChildCount(); i++) { 1697 final CellLayout cl = (CellLayout) getChildAt(i); 1698 cl.setShortcutAndWidgetAlpha(1f); 1699 } 1700 } 1701 } 1702 1703 @Override 1704 public View getContent() { 1705 return this; 1706 } 1707 1708 /** 1709 * Draw the View v into the given Canvas. 1710 * 1711 * @param v the view to draw 1712 * @param destCanvas the canvas to draw on 1713 * @param padding the horizontal and vertical padding to use when drawing 1714 */ 1715 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1716 final Rect clipRect = mTempRect; 1717 v.getDrawingRect(clipRect); 1718 1719 boolean textVisible = false; 1720 1721 destCanvas.save(); 1722 if (v instanceof TextView && pruneToDrawable) { 1723 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1724 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1725 destCanvas.translate(padding / 2, padding / 2); 1726 d.draw(destCanvas); 1727 } else { 1728 if (v instanceof FolderIcon) { 1729 // For FolderIcons the text can bleed into the icon area, and so we need to 1730 // hide the text completely (which can't be achieved by clipping). 1731 if (((FolderIcon) v).getTextVisible()) { 1732 ((FolderIcon) v).setTextVisible(false); 1733 textVisible = true; 1734 } 1735 } else if (v instanceof BubbleTextView) { 1736 final BubbleTextView tv = (BubbleTextView) v; 1737 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1738 tv.getLayout().getLineTop(0); 1739 } else if (v instanceof TextView) { 1740 final TextView tv = (TextView) v; 1741 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1742 tv.getLayout().getLineTop(0); 1743 } 1744 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1745 destCanvas.clipRect(clipRect, Op.REPLACE); 1746 v.draw(destCanvas); 1747 1748 // Restore text visibility of FolderIcon if necessary 1749 if (textVisible) { 1750 ((FolderIcon) v).setTextVisible(true); 1751 } 1752 } 1753 destCanvas.restore(); 1754 } 1755 1756 /** 1757 * Returns a new bitmap to show when the given View is being dragged around. 1758 * Responsibility for the bitmap is transferred to the caller. 1759 */ 1760 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1761 Bitmap b; 1762 1763 if (v instanceof TextView) { 1764 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1765 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1766 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1767 } else { 1768 b = Bitmap.createBitmap( 1769 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1770 } 1771 1772 canvas.setBitmap(b); 1773 drawDragView(v, canvas, padding, true); 1774 canvas.setBitmap(null); 1775 1776 return b; 1777 } 1778 1779 /** 1780 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1781 * Responsibility for the bitmap is transferred to the caller. 1782 */ 1783 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1784 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1785 final Bitmap b = Bitmap.createBitmap( 1786 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1787 1788 canvas.setBitmap(b); 1789 drawDragView(v, canvas, padding, true); 1790 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1791 canvas.setBitmap(null); 1792 return b; 1793 } 1794 1795 /** 1796 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1797 * Responsibility for the bitmap is transferred to the caller. 1798 */ 1799 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1800 boolean clipAlpha) { 1801 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1802 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1803 canvas.setBitmap(b); 1804 1805 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1806 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1807 (h - padding) / (float) orig.getHeight()); 1808 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1809 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1810 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1811 1812 // center the image 1813 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1814 1815 canvas.drawBitmap(orig, src, dst, null); 1816 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1817 clipAlpha); 1818 canvas.setBitmap(null); 1819 1820 return b; 1821 } 1822 1823 void startDrag(CellLayout.CellInfo cellInfo) { 1824 View child = cellInfo.cell; 1825 1826 // Make sure the drag was started by a long press as opposed to a long click. 1827 if (!child.isInTouchMode()) { 1828 return; 1829 } 1830 1831 mDragInfo = cellInfo; 1832 child.setVisibility(INVISIBLE); 1833 CellLayout layout = (CellLayout) child.getParent().getParent(); 1834 layout.prepareChildForDrag(child); 1835 1836 child.clearFocus(); 1837 child.setPressed(false); 1838 1839 final Canvas canvas = new Canvas(); 1840 1841 // The outline is used to visualize where the item will land if dropped 1842 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1843 beginDragShared(child, this); 1844 } 1845 1846 public void beginDragShared(View child, DragSource source) { 1847 Resources r = getResources(); 1848 1849 // The drag bitmap follows the touch point around on the screen 1850 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1851 1852 final int bmpWidth = b.getWidth(); 1853 final int bmpHeight = b.getHeight(); 1854 1855 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1856 int dragLayerX = 1857 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1858 int dragLayerY = 1859 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1860 - DRAG_BITMAP_PADDING / 2); 1861 1862 Point dragVisualizeOffset = null; 1863 Rect dragRect = null; 1864 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1865 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1866 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1867 int top = child.getPaddingTop(); 1868 int left = (bmpWidth - iconSize) / 2; 1869 int right = left + iconSize; 1870 int bottom = top + iconSize; 1871 dragLayerY += top; 1872 // Note: The drag region is used to calculate drag layer offsets, but the 1873 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1874 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1875 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1876 dragRect = new Rect(left, top, right, bottom); 1877 } else if (child instanceof FolderIcon) { 1878 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1879 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1880 } 1881 1882 // Clear the pressed state if necessary 1883 if (child instanceof BubbleTextView) { 1884 BubbleTextView icon = (BubbleTextView) child; 1885 icon.clearPressedOrFocusedBackground(); 1886 } 1887 1888 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1889 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1890 b.recycle(); 1891 1892 // Show the scrolling indicator when you pick up an item 1893 showScrollingIndicator(false); 1894 } 1895 1896 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1897 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1898 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1899 1900 final int[] cellXY = new int[2]; 1901 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1902 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1903 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1904 cellXY[1]); 1905 } 1906 1907 public boolean transitionStateShouldAllowDrop() { 1908 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1909 } 1910 1911 /** 1912 * {@inheritDoc} 1913 */ 1914 public boolean acceptDrop(DragObject d) { 1915 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1916 CellLayout dropTargetLayout = mDropToLayout; 1917 if (d.dragSource != this) { 1918 // Don't accept the drop if we're not over a screen at time of drop 1919 if (dropTargetLayout == null) { 1920 return false; 1921 } 1922 if (!transitionStateShouldAllowDrop()) return false; 1923 1924 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1925 d.dragView, mDragViewVisualCenter); 1926 1927 // We want the point to be mapped to the dragTarget. 1928 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1929 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1930 } else { 1931 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1932 } 1933 1934 int spanX = 1; 1935 int spanY = 1; 1936 if (mDragInfo != null) { 1937 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1938 spanX = dragCellInfo.spanX; 1939 spanY = dragCellInfo.spanY; 1940 } else { 1941 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1942 spanX = dragInfo.spanX; 1943 spanY = dragInfo.spanY; 1944 } 1945 1946 int minSpanX = spanX; 1947 int minSpanY = spanY; 1948 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1949 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1950 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1951 } 1952 1953 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1954 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1955 mTargetCell); 1956 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 1957 mDragViewVisualCenter[1], mTargetCell); 1958 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1959 mTargetCell, distance, true)) { 1960 return true; 1961 } 1962 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1963 mTargetCell, distance)) { 1964 return true; 1965 } 1966 1967 int[] resultSpan = new int[2]; 1968 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 1969 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 1970 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 1971 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 1972 1973 // Don't accept the drop if there's no room for the item 1974 if (!foundCell) { 1975 // Don't show the message if we are dropping on the AllApps button and the hotseat 1976 // is full 1977 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 1978 if (mTargetCell != null && isHotseat) { 1979 Hotseat hotseat = mLauncher.getHotseat(); 1980 if (hotseat.isAllAppsButtonRank( 1981 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 1982 return false; 1983 } 1984 } 1985 1986 mLauncher.showOutOfSpaceMessage(isHotseat); 1987 return false; 1988 } 1989 } 1990 return true; 1991 } 1992 1993 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 1994 distance, boolean considerTimeout) { 1995 if (distance > mMaxDistanceForFolderCreation) return false; 1996 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1997 1998 if (dropOverView != null) { 1999 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2000 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2001 return false; 2002 } 2003 } 2004 2005 boolean hasntMoved = false; 2006 if (mDragInfo != null) { 2007 hasntMoved = dropOverView == mDragInfo.cell; 2008 } 2009 2010 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2011 return false; 2012 } 2013 2014 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2015 boolean willBecomeShortcut = 2016 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2017 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2018 2019 return (aboveShortcut && willBecomeShortcut); 2020 } 2021 2022 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2023 float distance) { 2024 if (distance > mMaxDistanceForFolderCreation) return false; 2025 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2026 2027 if (dropOverView != null) { 2028 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2029 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2030 return false; 2031 } 2032 } 2033 2034 if (dropOverView instanceof FolderIcon) { 2035 FolderIcon fi = (FolderIcon) dropOverView; 2036 if (fi.acceptDrop(dragInfo)) { 2037 return true; 2038 } 2039 } 2040 return false; 2041 } 2042 2043 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2044 int[] targetCell, float distance, boolean external, DragView dragView, 2045 Runnable postAnimationRunnable) { 2046 if (distance > mMaxDistanceForFolderCreation) return false; 2047 View v = target.getChildAt(targetCell[0], targetCell[1]); 2048 2049 boolean hasntMoved = false; 2050 if (mDragInfo != null) { 2051 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2052 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2053 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2054 } 2055 2056 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2057 mCreateUserFolderOnDrop = false; 2058 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2059 2060 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2061 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2062 2063 if (aboveShortcut && willBecomeShortcut) { 2064 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2065 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2066 // if the drag started here, we need to remove it from the workspace 2067 if (!external) { 2068 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2069 } 2070 2071 Rect folderLocation = new Rect(); 2072 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2073 target.removeView(v); 2074 2075 FolderIcon fi = 2076 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2077 destInfo.cellX = -1; 2078 destInfo.cellY = -1; 2079 sourceInfo.cellX = -1; 2080 sourceInfo.cellY = -1; 2081 2082 // If the dragView is null, we can't animate 2083 boolean animate = dragView != null; 2084 if (animate) { 2085 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2086 postAnimationRunnable); 2087 } else { 2088 fi.addItem(destInfo); 2089 fi.addItem(sourceInfo); 2090 } 2091 return true; 2092 } 2093 return false; 2094 } 2095 2096 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2097 float distance, DragObject d, boolean external) { 2098 if (distance > mMaxDistanceForFolderCreation) return false; 2099 2100 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2101 if (!mAddToExistingFolderOnDrop) return false; 2102 mAddToExistingFolderOnDrop = false; 2103 2104 if (dropOverView instanceof FolderIcon) { 2105 FolderIcon fi = (FolderIcon) dropOverView; 2106 if (fi.acceptDrop(d.dragInfo)) { 2107 fi.onDrop(d); 2108 2109 // if the drag started here, we need to remove it from the workspace 2110 if (!external) { 2111 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2112 } 2113 return true; 2114 } 2115 } 2116 return false; 2117 } 2118 2119 public void onDrop(final DragObject d) { 2120 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2121 mDragViewVisualCenter); 2122 2123 CellLayout dropTargetLayout = mDropToLayout; 2124 2125 // We want the point to be mapped to the dragTarget. 2126 if (dropTargetLayout != null) { 2127 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2128 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2129 } else { 2130 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2131 } 2132 } 2133 2134 int snapScreen = -1; 2135 boolean resizeOnDrop = false; 2136 if (d.dragSource != this) { 2137 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2138 (int) mDragViewVisualCenter[1] }; 2139 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2140 } else if (mDragInfo != null) { 2141 final View cell = mDragInfo.cell; 2142 2143 Runnable resizeRunnable = null; 2144 if (dropTargetLayout != null) { 2145 // Move internally 2146 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2147 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2148 long container = hasMovedIntoHotseat ? 2149 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2150 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2151 int screen = (mTargetCell[0] < 0) ? 2152 mDragInfo.screen : indexOfChild(dropTargetLayout); 2153 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2154 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2155 // First we find the cell nearest to point at which the item is 2156 // dropped, without any consideration to whether there is an item there. 2157 2158 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2159 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2160 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2161 mDragViewVisualCenter[1], mTargetCell); 2162 2163 // If the item being dropped is a shortcut and the nearest drop 2164 // cell also contains a shortcut, then create a folder with the two shortcuts. 2165 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2166 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2167 return; 2168 } 2169 2170 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2171 distance, d, false)) { 2172 return; 2173 } 2174 2175 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2176 // we need to find the nearest cell location that is vacant 2177 ItemInfo item = (ItemInfo) d.dragInfo; 2178 int minSpanX = item.spanX; 2179 int minSpanY = item.spanY; 2180 if (item.minSpanX > 0 && item.minSpanY > 0) { 2181 minSpanX = item.minSpanX; 2182 minSpanY = item.minSpanY; 2183 } 2184 2185 int[] resultSpan = new int[2]; 2186 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2187 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2188 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2189 2190 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2191 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2192 resizeOnDrop = true; 2193 item.spanX = resultSpan[0]; 2194 item.spanY = resultSpan[1]; 2195 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2196 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2197 resultSpan[1]); 2198 } 2199 2200 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2201 snapScreen = screen; 2202 snapToPage(screen); 2203 } 2204 2205 if (foundCell) { 2206 final ItemInfo info = (ItemInfo) cell.getTag(); 2207 if (hasMovedLayouts) { 2208 // Reparent the view 2209 getParentCellLayoutForView(cell).removeView(cell); 2210 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2211 info.spanX, info.spanY); 2212 } 2213 2214 // update the item's position after drop 2215 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2216 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2217 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2218 lp.cellHSpan = item.spanX; 2219 lp.cellVSpan = item.spanY; 2220 lp.isLockedToGrid = true; 2221 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2222 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2223 2224 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2225 cell instanceof LauncherAppWidgetHostView) { 2226 final CellLayout cellLayout = dropTargetLayout; 2227 // We post this call so that the widget has a chance to be placed 2228 // in its final location 2229 2230 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2231 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2232 if (pinfo != null && 2233 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2234 final Runnable addResizeFrame = new Runnable() { 2235 public void run() { 2236 DragLayer dragLayer = mLauncher.getDragLayer(); 2237 dragLayer.addResizeFrame(info, hostView, cellLayout); 2238 } 2239 }; 2240 resizeRunnable = (new Runnable() { 2241 public void run() { 2242 if (!isPageMoving()) { 2243 addResizeFrame.run(); 2244 } else { 2245 mDelayedResizeRunnable = addResizeFrame; 2246 } 2247 } 2248 }); 2249 } 2250 } 2251 2252 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2253 lp.cellY); 2254 } else { 2255 // If we can't find a drop location, we return the item to its original position 2256 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2257 mTargetCell[0] = lp.cellX; 2258 mTargetCell[1] = lp.cellY; 2259 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2260 layout.markCellsAsOccupiedForView(cell); 2261 } 2262 } 2263 2264 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2265 final Runnable finalResizeRunnable = resizeRunnable; 2266 // Prepare it to be animated into its new position 2267 // This must be called after the view has been re-parented 2268 final Runnable onCompleteRunnable = new Runnable() { 2269 @Override 2270 public void run() { 2271 mAnimatingViewIntoPlace = false; 2272 updateChildrenLayersEnabled(false); 2273 if (finalResizeRunnable != null) { 2274 finalResizeRunnable.run(); 2275 } 2276 } 2277 }; 2278 mAnimatingViewIntoPlace = true; 2279 if (d.dragView.hasDrawn()) { 2280 final ItemInfo info = (ItemInfo) cell.getTag(); 2281 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2282 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2283 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2284 animateWidgetDrop(info, parent, d.dragView, 2285 onCompleteRunnable, animationType, cell, false); 2286 } else { 2287 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2288 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2289 onCompleteRunnable, this); 2290 } 2291 } else { 2292 d.deferDragViewCleanupPostAnimation = false; 2293 cell.setVisibility(VISIBLE); 2294 } 2295 parent.onDropChild(cell); 2296 } 2297 } 2298 2299 public void setFinalScrollForPageChange(int screen) { 2300 if (screen >= 0) { 2301 mSavedScrollX = getScrollX(); 2302 CellLayout cl = (CellLayout) getChildAt(screen); 2303 mSavedTranslationX = cl.getTranslationX(); 2304 mSavedRotationY = cl.getRotationY(); 2305 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2306 setScrollX(newX); 2307 cl.setTranslationX(0f); 2308 cl.setRotationY(0f); 2309 } 2310 } 2311 2312 public void resetFinalScrollForPageChange(int screen) { 2313 if (screen >= 0) { 2314 CellLayout cl = (CellLayout) getChildAt(screen); 2315 setScrollX(mSavedScrollX); 2316 cl.setTranslationX(mSavedTranslationX); 2317 cl.setRotationY(mSavedRotationY); 2318 } 2319 } 2320 2321 public void getViewLocationRelativeToSelf(View v, int[] location) { 2322 getLocationInWindow(location); 2323 int x = location[0]; 2324 int y = location[1]; 2325 2326 v.getLocationInWindow(location); 2327 int vX = location[0]; 2328 int vY = location[1]; 2329 2330 location[0] = vX - x; 2331 location[1] = vY - y; 2332 } 2333 2334 public void onDragEnter(DragObject d) { 2335 mDragEnforcer.onDragEnter(); 2336 mCreateUserFolderOnDrop = false; 2337 mAddToExistingFolderOnDrop = false; 2338 2339 mDropToLayout = null; 2340 CellLayout layout = getCurrentDropLayout(); 2341 setCurrentDropLayout(layout); 2342 setCurrentDragOverlappingLayout(layout); 2343 2344 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2345 // don't need to show the outlines 2346 if (LauncherApplication.isScreenLarge()) { 2347 showOutlines(); 2348 } 2349 } 2350 2351 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2352 Resources res = launcher.getResources(); 2353 Display display = launcher.getWindowManager().getDefaultDisplay(); 2354 Point smallestSize = new Point(); 2355 Point largestSize = new Point(); 2356 display.getCurrentSizeRange(smallestSize, largestSize); 2357 if (orientation == CellLayout.LANDSCAPE) { 2358 if (mLandscapeCellLayoutMetrics == null) { 2359 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2360 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2361 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2362 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2363 int width = largestSize.x - paddingLeft - paddingRight; 2364 int height = smallestSize.y - paddingTop - paddingBottom; 2365 mLandscapeCellLayoutMetrics = new Rect(); 2366 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2367 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2368 orientation); 2369 } 2370 return mLandscapeCellLayoutMetrics; 2371 } else if (orientation == CellLayout.PORTRAIT) { 2372 if (mPortraitCellLayoutMetrics == null) { 2373 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2374 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2375 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2376 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2377 int width = smallestSize.x - paddingLeft - paddingRight; 2378 int height = largestSize.y - paddingTop - paddingBottom; 2379 mPortraitCellLayoutMetrics = new Rect(); 2380 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2381 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2382 orientation); 2383 } 2384 return mPortraitCellLayoutMetrics; 2385 } 2386 return null; 2387 } 2388 2389 public void onDragExit(DragObject d) { 2390 mDragEnforcer.onDragExit(); 2391 2392 // Here we store the final page that will be dropped to, if the workspace in fact 2393 // receives the drop 2394 if (mInScrollArea) { 2395 if (isPageMoving()) { 2396 // If the user drops while the page is scrolling, we should use that page as the 2397 // destination instead of the page that is being hovered over. 2398 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2399 } else { 2400 mDropToLayout = mDragOverlappingLayout; 2401 } 2402 } else { 2403 mDropToLayout = mDragTargetLayout; 2404 } 2405 2406 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2407 mCreateUserFolderOnDrop = true; 2408 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2409 mAddToExistingFolderOnDrop = true; 2410 } 2411 2412 // Reset the scroll area and previous drag target 2413 onResetScrollArea(); 2414 setCurrentDropLayout(null); 2415 setCurrentDragOverlappingLayout(null); 2416 2417 mSpringLoadedDragController.cancel(); 2418 2419 if (!mIsPageMoving) { 2420 hideOutlines(); 2421 } 2422 } 2423 2424 void setCurrentDropLayout(CellLayout layout) { 2425 if (mDragTargetLayout != null) { 2426 mDragTargetLayout.revertTempState(); 2427 mDragTargetLayout.onDragExit(); 2428 } 2429 mDragTargetLayout = layout; 2430 if (mDragTargetLayout != null) { 2431 mDragTargetLayout.onDragEnter(); 2432 } 2433 cleanupReorder(true); 2434 cleanupFolderCreation(); 2435 setCurrentDropOverCell(-1, -1); 2436 } 2437 2438 void setCurrentDragOverlappingLayout(CellLayout layout) { 2439 if (mDragOverlappingLayout != null) { 2440 mDragOverlappingLayout.setIsDragOverlapping(false); 2441 } 2442 mDragOverlappingLayout = layout; 2443 if (mDragOverlappingLayout != null) { 2444 mDragOverlappingLayout.setIsDragOverlapping(true); 2445 } 2446 invalidate(); 2447 } 2448 2449 void setCurrentDropOverCell(int x, int y) { 2450 if (x != mDragOverX || y != mDragOverY) { 2451 mDragOverX = x; 2452 mDragOverY = y; 2453 setDragMode(DRAG_MODE_NONE); 2454 } 2455 } 2456 2457 void setDragMode(int dragMode) { 2458 if (dragMode != mDragMode) { 2459 if (dragMode == DRAG_MODE_NONE) { 2460 cleanupAddToFolder(); 2461 // We don't want to cancel the re-order alarm every time the target cell changes 2462 // as this feels to slow / unresponsive. 2463 cleanupReorder(false); 2464 cleanupFolderCreation(); 2465 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2466 cleanupReorder(true); 2467 cleanupFolderCreation(); 2468 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2469 cleanupAddToFolder(); 2470 cleanupReorder(true); 2471 } else if (dragMode == DRAG_MODE_REORDER) { 2472 cleanupAddToFolder(); 2473 cleanupFolderCreation(); 2474 } 2475 mDragMode = dragMode; 2476 } 2477 } 2478 2479 private void cleanupFolderCreation() { 2480 if (mDragFolderRingAnimator != null) { 2481 mDragFolderRingAnimator.animateToNaturalState(); 2482 } 2483 mFolderCreationAlarm.cancelAlarm(); 2484 } 2485 2486 private void cleanupAddToFolder() { 2487 if (mDragOverFolderIcon != null) { 2488 mDragOverFolderIcon.onDragExit(null); 2489 mDragOverFolderIcon = null; 2490 } 2491 } 2492 2493 private void cleanupReorder(boolean cancelAlarm) { 2494 // Any pending reorders are canceled 2495 if (cancelAlarm) { 2496 mReorderAlarm.cancelAlarm(); 2497 } 2498 mLastReorderX = -1; 2499 mLastReorderY = -1; 2500 } 2501 2502 public DropTarget getDropTargetDelegate(DragObject d) { 2503 return null; 2504 } 2505 2506 /* 2507 * 2508 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2509 * coordinate space. The argument xy is modified with the return result. 2510 * 2511 */ 2512 void mapPointFromSelfToChild(View v, float[] xy) { 2513 mapPointFromSelfToChild(v, xy, null); 2514 } 2515 2516 /* 2517 * 2518 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2519 * coordinate space. The argument xy is modified with the return result. 2520 * 2521 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2522 * computing it itself; we use this to avoid redundant matrix inversions in 2523 * findMatchingPageForDragOver 2524 * 2525 */ 2526 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2527 if (cachedInverseMatrix == null) { 2528 v.getMatrix().invert(mTempInverseMatrix); 2529 cachedInverseMatrix = mTempInverseMatrix; 2530 } 2531 int scrollX = getScrollX(); 2532 if (mNextPage != INVALID_PAGE) { 2533 scrollX = mScroller.getFinalX(); 2534 } 2535 xy[0] = xy[0] + scrollX - v.getLeft(); 2536 xy[1] = xy[1] + getScrollY() - v.getTop(); 2537 cachedInverseMatrix.mapPoints(xy); 2538 } 2539 2540 /* 2541 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2542 * covers the full screen) 2543 */ 2544 void mapPointFromSelfToSibling(View v, float[] xy) { 2545 xy[0] = xy[0] - v.getLeft(); 2546 xy[1] = xy[1] - v.getTop(); 2547 } 2548 2549 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2550 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2551 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2552 } 2553 2554 /* 2555 * 2556 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2557 * the parent View's coordinate space. The argument xy is modified with the return result. 2558 * 2559 */ 2560 void mapPointFromChildToSelf(View v, float[] xy) { 2561 v.getMatrix().mapPoints(xy); 2562 int scrollX = getScrollX(); 2563 if (mNextPage != INVALID_PAGE) { 2564 scrollX = mScroller.getFinalX(); 2565 } 2566 xy[0] -= (scrollX - v.getLeft()); 2567 xy[1] -= (getScrollY() - v.getTop()); 2568 } 2569 2570 static private float squaredDistance(float[] point1, float[] point2) { 2571 float distanceX = point1[0] - point2[0]; 2572 float distanceY = point2[1] - point2[1]; 2573 return distanceX * distanceX + distanceY * distanceY; 2574 } 2575 2576 /* 2577 * 2578 * Returns true if the passed CellLayout cl overlaps with dragView 2579 * 2580 */ 2581 boolean overlaps(CellLayout cl, DragView dragView, 2582 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2583 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2584 final float[] draggedItemTopLeft = mTempDragCoordinates; 2585 draggedItemTopLeft[0] = dragViewX; 2586 draggedItemTopLeft[1] = dragViewY; 2587 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2588 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2589 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2590 2591 // Transform the dragged item's top left coordinates 2592 // to the CellLayout's local coordinates 2593 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2594 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2595 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2596 2597 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2598 // Transform the dragged item's bottom right coordinates 2599 // to the CellLayout's local coordinates 2600 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2601 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2602 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2603 2604 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2605 float overlap = (overlapRegionRight - overlapRegionLeft) * 2606 (overlapRegionBottom - overlapRegionTop); 2607 if (overlap > 0) { 2608 return true; 2609 } 2610 } 2611 } 2612 return false; 2613 } 2614 2615 /* 2616 * 2617 * This method returns the CellLayout that is currently being dragged to. In order to drag 2618 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2619 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2620 * 2621 * Return null if no CellLayout is currently being dragged over 2622 * 2623 */ 2624 private CellLayout findMatchingPageForDragOver( 2625 DragView dragView, float originX, float originY, boolean exact) { 2626 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2627 // with the item being dragged and then choose the one that's closest to the touch point 2628 final int screenCount = getChildCount(); 2629 CellLayout bestMatchingScreen = null; 2630 float smallestDistSoFar = Float.MAX_VALUE; 2631 2632 for (int i = 0; i < screenCount; i++) { 2633 CellLayout cl = (CellLayout) getChildAt(i); 2634 2635 final float[] touchXy = {originX, originY}; 2636 // Transform the touch coordinates to the CellLayout's local coordinates 2637 // If the touch point is within the bounds of the cell layout, we can return immediately 2638 cl.getMatrix().invert(mTempInverseMatrix); 2639 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2640 2641 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2642 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2643 return cl; 2644 } 2645 2646 if (!exact) { 2647 // Get the center of the cell layout in screen coordinates 2648 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2649 cellLayoutCenter[0] = cl.getWidth()/2; 2650 cellLayoutCenter[1] = cl.getHeight()/2; 2651 mapPointFromChildToSelf(cl, cellLayoutCenter); 2652 2653 touchXy[0] = originX; 2654 touchXy[1] = originY; 2655 2656 // Calculate the distance between the center of the CellLayout 2657 // and the touch point 2658 float dist = squaredDistance(touchXy, cellLayoutCenter); 2659 2660 if (dist < smallestDistSoFar) { 2661 smallestDistSoFar = dist; 2662 bestMatchingScreen = cl; 2663 } 2664 } 2665 } 2666 return bestMatchingScreen; 2667 } 2668 2669 // This is used to compute the visual center of the dragView. This point is then 2670 // used to visualize drop locations and determine where to drop an item. The idea is that 2671 // the visual center represents the user's interpretation of where the item is, and hence 2672 // is the appropriate point to use when determining drop location. 2673 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2674 DragView dragView, float[] recycle) { 2675 float res[]; 2676 if (recycle == null) { 2677 res = new float[2]; 2678 } else { 2679 res = recycle; 2680 } 2681 2682 // First off, the drag view has been shifted in a way that is not represented in the 2683 // x and y values or the x/yOffsets. Here we account for that shift. 2684 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2685 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2686 2687 // These represent the visual top and left of drag view if a dragRect was provided. 2688 // If a dragRect was not provided, then they correspond to the actual view left and 2689 // top, as the dragRect is in that case taken to be the entire dragView. 2690 // R.dimen.dragViewOffsetY. 2691 int left = x - xOffset; 2692 int top = y - yOffset; 2693 2694 // In order to find the visual center, we shift by half the dragRect 2695 res[0] = left + dragView.getDragRegion().width() / 2; 2696 res[1] = top + dragView.getDragRegion().height() / 2; 2697 2698 return res; 2699 } 2700 2701 private boolean isDragWidget(DragObject d) { 2702 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2703 d.dragInfo instanceof PendingAddWidgetInfo); 2704 } 2705 private boolean isExternalDragWidget(DragObject d) { 2706 return d.dragSource != this && isDragWidget(d); 2707 } 2708 2709 public void onDragOver(DragObject d) { 2710 // Skip drag over events while we are dragging over side pages 2711 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2712 2713 Rect r = new Rect(); 2714 CellLayout layout = null; 2715 ItemInfo item = (ItemInfo) d.dragInfo; 2716 2717 // Ensure that we have proper spans for the item that we are dropping 2718 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2719 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2720 d.dragView, mDragViewVisualCenter); 2721 2722 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2723 // Identify whether we have dragged over a side page 2724 if (isSmall()) { 2725 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2726 mLauncher.getHotseat().getHitRect(r); 2727 if (r.contains(d.x, d.y)) { 2728 layout = mLauncher.getHotseat().getLayout(); 2729 } 2730 } 2731 if (layout == null) { 2732 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2733 } 2734 if (layout != mDragTargetLayout) { 2735 2736 setCurrentDropLayout(layout); 2737 setCurrentDragOverlappingLayout(layout); 2738 2739 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2740 if (isInSpringLoadedMode) { 2741 if (mLauncher.isHotseatLayout(layout)) { 2742 mSpringLoadedDragController.cancel(); 2743 } else { 2744 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2745 } 2746 } 2747 } 2748 } else { 2749 // Test to see if we are over the hotseat otherwise just use the current page 2750 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2751 mLauncher.getHotseat().getHitRect(r); 2752 if (r.contains(d.x, d.y)) { 2753 layout = mLauncher.getHotseat().getLayout(); 2754 } 2755 } 2756 if (layout == null) { 2757 layout = getCurrentDropLayout(); 2758 } 2759 if (layout != mDragTargetLayout) { 2760 setCurrentDropLayout(layout); 2761 setCurrentDragOverlappingLayout(layout); 2762 } 2763 } 2764 2765 // Handle the drag over 2766 if (mDragTargetLayout != null) { 2767 // We want the point to be mapped to the dragTarget. 2768 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2769 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2770 } else { 2771 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2772 } 2773 2774 ItemInfo info = (ItemInfo) d.dragInfo; 2775 2776 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2777 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2778 mDragTargetLayout, mTargetCell); 2779 2780 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2781 2782 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2783 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2784 2785 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2786 mTargetCell[1]); 2787 2788 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2789 targetCellDistance, dragOverView); 2790 2791 int minSpanX = item.spanX; 2792 int minSpanY = item.spanY; 2793 if (item.minSpanX > 0 && item.minSpanY > 0) { 2794 minSpanX = item.minSpanX; 2795 minSpanY = item.minSpanY; 2796 } 2797 2798 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2799 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2800 item.spanY, child, mTargetCell); 2801 2802 if (!nearestDropOccupied) { 2803 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2804 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2805 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2806 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2807 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2808 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2809 mLastReorderY != mTargetCell[1])) { 2810 2811 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2812 // reorder, then we schedule a reorder 2813 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2814 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2815 mReorderAlarm.setOnAlarmListener(listener); 2816 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2817 } 2818 2819 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2820 !nearestDropOccupied) { 2821 if (mDragTargetLayout != null) { 2822 mDragTargetLayout.revertTempState(); 2823 } 2824 } 2825 } 2826 } 2827 2828 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2829 int[] targetCell, float distance, View dragOverView) { 2830 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2831 false); 2832 2833 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2834 !mFolderCreationAlarm.alarmPending()) { 2835 mFolderCreationAlarm.setOnAlarmListener(new 2836 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2837 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2838 return; 2839 } 2840 2841 boolean willAddToFolder = 2842 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2843 2844 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2845 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2846 mDragOverFolderIcon.onDragEnter(info); 2847 if (targetLayout != null) { 2848 targetLayout.clearDragOutlines(); 2849 } 2850 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2851 return; 2852 } 2853 2854 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2855 setDragMode(DRAG_MODE_NONE); 2856 } 2857 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2858 setDragMode(DRAG_MODE_NONE); 2859 } 2860 2861 return; 2862 } 2863 2864 class FolderCreationAlarmListener implements OnAlarmListener { 2865 CellLayout layout; 2866 int cellX; 2867 int cellY; 2868 2869 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2870 this.layout = layout; 2871 this.cellX = cellX; 2872 this.cellY = cellY; 2873 } 2874 2875 public void onAlarm(Alarm alarm) { 2876 if (mDragFolderRingAnimator == null) { 2877 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2878 } 2879 mDragFolderRingAnimator.setCell(cellX, cellY); 2880 mDragFolderRingAnimator.setCellLayout(layout); 2881 mDragFolderRingAnimator.animateToAcceptState(); 2882 layout.showFolderAccept(mDragFolderRingAnimator); 2883 layout.clearDragOutlines(); 2884 setDragMode(DRAG_MODE_CREATE_FOLDER); 2885 } 2886 } 2887 2888 class ReorderAlarmListener implements OnAlarmListener { 2889 float[] dragViewCenter; 2890 int minSpanX, minSpanY, spanX, spanY; 2891 DragView dragView; 2892 View child; 2893 2894 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2895 int spanY, DragView dragView, View child) { 2896 this.dragViewCenter = dragViewCenter; 2897 this.minSpanX = minSpanX; 2898 this.minSpanY = minSpanY; 2899 this.spanX = spanX; 2900 this.spanY = spanY; 2901 this.child = child; 2902 this.dragView = dragView; 2903 } 2904 2905 public void onAlarm(Alarm alarm) { 2906 int[] resultSpan = new int[2]; 2907 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2908 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2909 mLastReorderX = mTargetCell[0]; 2910 mLastReorderY = mTargetCell[1]; 2911 2912 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2913 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2914 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2915 2916 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2917 mDragTargetLayout.revertTempState(); 2918 } else { 2919 setDragMode(DRAG_MODE_REORDER); 2920 } 2921 2922 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2923 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2924 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2925 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2926 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2927 } 2928 } 2929 2930 @Override 2931 public void getHitRect(Rect outRect) { 2932 // We want the workspace to have the whole area of the display (it will find the correct 2933 // cell layout to drop to in the existing drag/drop logic. 2934 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2935 } 2936 2937 /** 2938 * Add the item specified by dragInfo to the given layout. 2939 * @return true if successful 2940 */ 2941 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2942 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2943 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2944 return true; 2945 } 2946 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2947 return false; 2948 } 2949 2950 private void onDropExternal(int[] touchXY, Object dragInfo, 2951 CellLayout cellLayout, boolean insertAtFirst) { 2952 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2953 } 2954 2955 /** 2956 * Drop an item that didn't originate on one of the workspace screens. 2957 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2958 * come from another app altogether. 2959 * 2960 * NOTE: This can also be called when we are outside of a drag event, when we want 2961 * to add an item to one of the workspace screens. 2962 */ 2963 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2964 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2965 final Runnable exitSpringLoadedRunnable = new Runnable() { 2966 @Override 2967 public void run() { 2968 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2969 } 2970 }; 2971 2972 ItemInfo info = (ItemInfo) dragInfo; 2973 int spanX = info.spanX; 2974 int spanY = info.spanY; 2975 if (mDragInfo != null) { 2976 spanX = mDragInfo.spanX; 2977 spanY = mDragInfo.spanY; 2978 } 2979 2980 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2981 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2982 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2983 final int screen = indexOfChild(cellLayout); 2984 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2985 && mState != State.SPRING_LOADED) { 2986 snapToPage(screen); 2987 } 2988 2989 if (info instanceof PendingAddItemInfo) { 2990 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2991 2992 boolean findNearestVacantCell = true; 2993 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2994 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2995 cellLayout, mTargetCell); 2996 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2997 mDragViewVisualCenter[1], mTargetCell); 2998 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 2999 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3000 cellLayout, mTargetCell, distance)) { 3001 findNearestVacantCell = false; 3002 } 3003 } 3004 3005 final ItemInfo item = (ItemInfo) d.dragInfo; 3006 if (findNearestVacantCell) { 3007 int minSpanX = item.spanX; 3008 int minSpanY = item.spanY; 3009 if (item.minSpanX > 0 && item.minSpanY > 0) { 3010 minSpanX = item.minSpanX; 3011 minSpanY = item.minSpanY; 3012 } 3013 int[] resultSpan = new int[2]; 3014 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3015 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3016 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3017 item.spanX = resultSpan[0]; 3018 item.spanY = resultSpan[1]; 3019 } 3020 3021 Runnable onAnimationCompleteRunnable = new Runnable() { 3022 @Override 3023 public void run() { 3024 // When dragging and dropping from customization tray, we deal with creating 3025 // widgets/shortcuts/folders in a slightly different way 3026 switch (pendingInfo.itemType) { 3027 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3028 int span[] = new int[2]; 3029 span[0] = item.spanX; 3030 span[1] = item.spanY; 3031 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3032 container, screen, mTargetCell, span, null); 3033 break; 3034 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3035 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3036 container, screen, mTargetCell, null); 3037 break; 3038 default: 3039 throw new IllegalStateException("Unknown item type: " + 3040 pendingInfo.itemType); 3041 } 3042 } 3043 }; 3044 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3045 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3046 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3047 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3048 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3049 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3050 } 3051 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3052 animationStyle, finalView, true); 3053 } else { 3054 // This is for other drag/drop cases, like dragging from All Apps 3055 View view = null; 3056 3057 switch (info.itemType) { 3058 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3059 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3060 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3061 // Came from all apps -- make a copy 3062 info = new ShortcutInfo((ApplicationInfo) info); 3063 } 3064 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3065 (ShortcutInfo) info); 3066 break; 3067 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3068 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3069 (FolderInfo) info, mIconCache); 3070 break; 3071 default: 3072 throw new IllegalStateException("Unknown item type: " + info.itemType); 3073 } 3074 3075 // First we find the cell nearest to point at which the item is 3076 // dropped, without any consideration to whether there is an item there. 3077 if (touchXY != null) { 3078 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3079 cellLayout, mTargetCell); 3080 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3081 mDragViewVisualCenter[1], mTargetCell); 3082 d.postAnimationRunnable = exitSpringLoadedRunnable; 3083 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3084 true, d.dragView, d.postAnimationRunnable)) { 3085 return; 3086 } 3087 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3088 true)) { 3089 return; 3090 } 3091 } 3092 3093 if (touchXY != null) { 3094 // when dragging and dropping, just find the closest free spot 3095 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3096 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3097 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3098 } else { 3099 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3100 } 3101 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3102 info.spanY, insertAtFirst); 3103 cellLayout.onDropChild(view); 3104 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3105 cellLayout.getShortcutsAndWidgets().measureChild(view); 3106 3107 3108 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3109 lp.cellX, lp.cellY); 3110 3111 if (d.dragView != null) { 3112 // We wrap the animation call in the temporary set and reset of the current 3113 // cellLayout to its final transform -- this means we animate the drag view to 3114 // the correct final location. 3115 setFinalTransitionTransform(cellLayout); 3116 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3117 exitSpringLoadedRunnable); 3118 resetTransitionTransform(cellLayout); 3119 } 3120 } 3121 } 3122 3123 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3124 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3125 widgetInfo.spanY, widgetInfo, false); 3126 int visibility = layout.getVisibility(); 3127 layout.setVisibility(VISIBLE); 3128 3129 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3130 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3131 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3132 Bitmap.Config.ARGB_8888); 3133 Canvas c = new Canvas(b); 3134 3135 layout.measure(width, height); 3136 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3137 layout.draw(c); 3138 c.setBitmap(null); 3139 layout.setVisibility(visibility); 3140 return b; 3141 } 3142 3143 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3144 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3145 boolean external, boolean scale) { 3146 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3147 // location and size on the home screen. 3148 int spanX = info.spanX; 3149 int spanY = info.spanY; 3150 3151 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3152 loc[0] = r.left; 3153 loc[1] = r.top; 3154 3155 setFinalTransitionTransform(layout); 3156 float cellLayoutScale = 3157 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3158 resetTransitionTransform(layout); 3159 3160 float dragViewScaleX; 3161 float dragViewScaleY; 3162 if (scale) { 3163 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3164 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3165 } else { 3166 dragViewScaleX = 1f; 3167 dragViewScaleY = 1f; 3168 } 3169 3170 // The animation will scale the dragView about its center, so we need to center about 3171 // the final location. 3172 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3173 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3174 3175 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3176 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3177 } 3178 3179 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3180 final Runnable onCompleteRunnable, int animationType, final View finalView, 3181 boolean external) { 3182 Rect from = new Rect(); 3183 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3184 3185 int[] finalPos = new int[2]; 3186 float scaleXY[] = new float[2]; 3187 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3188 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3189 external, scalePreview); 3190 3191 Resources res = mLauncher.getResources(); 3192 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3193 3194 // In the case where we've prebound the widget, we remove it from the DragLayer 3195 if (finalView instanceof AppWidgetHostView && external) { 3196 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3197 mLauncher.getDragLayer().removeView(finalView); 3198 } 3199 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3200 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3201 dragView.setCrossFadeBitmap(crossFadeBitmap); 3202 dragView.crossFade((int) (duration * 0.8f)); 3203 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3204 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3205 } 3206 3207 DragLayer dragLayer = mLauncher.getDragLayer(); 3208 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3209 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3210 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3211 } else { 3212 int endStyle; 3213 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3214 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3215 } else { 3216 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3217 } 3218 3219 Runnable onComplete = new Runnable() { 3220 @Override 3221 public void run() { 3222 if (finalView != null) { 3223 finalView.setVisibility(VISIBLE); 3224 } 3225 if (onCompleteRunnable != null) { 3226 onCompleteRunnable.run(); 3227 } 3228 } 3229 }; 3230 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3231 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3232 duration, this); 3233 } 3234 } 3235 3236 public void setFinalTransitionTransform(CellLayout layout) { 3237 if (isSwitchingState()) { 3238 int index = indexOfChild(layout); 3239 mCurrentScaleX = layout.getScaleX(); 3240 mCurrentScaleY = layout.getScaleY(); 3241 mCurrentTranslationX = layout.getTranslationX(); 3242 mCurrentTranslationY = layout.getTranslationY(); 3243 mCurrentRotationY = layout.getRotationY(); 3244 layout.setScaleX(mNewScaleXs[index]); 3245 layout.setScaleY(mNewScaleYs[index]); 3246 layout.setTranslationX(mNewTranslationXs[index]); 3247 layout.setTranslationY(mNewTranslationYs[index]); 3248 layout.setRotationY(mNewRotationYs[index]); 3249 } 3250 } 3251 public void resetTransitionTransform(CellLayout layout) { 3252 if (isSwitchingState()) { 3253 mCurrentScaleX = layout.getScaleX(); 3254 mCurrentScaleY = layout.getScaleY(); 3255 mCurrentTranslationX = layout.getTranslationX(); 3256 mCurrentTranslationY = layout.getTranslationY(); 3257 mCurrentRotationY = layout.getRotationY(); 3258 layout.setScaleX(mCurrentScaleX); 3259 layout.setScaleY(mCurrentScaleY); 3260 layout.setTranslationX(mCurrentTranslationX); 3261 layout.setTranslationY(mCurrentTranslationY); 3262 layout.setRotationY(mCurrentRotationY); 3263 } 3264 } 3265 3266 /** 3267 * Return the current {@link CellLayout}, correctly picking the destination 3268 * screen while a scroll is in progress. 3269 */ 3270 public CellLayout getCurrentDropLayout() { 3271 return (CellLayout) getChildAt(getNextPage()); 3272 } 3273 3274 /** 3275 * Return the current CellInfo describing our current drag; this method exists 3276 * so that Launcher can sync this object with the correct info when the activity is created/ 3277 * destroyed 3278 * 3279 */ 3280 public CellLayout.CellInfo getDragInfo() { 3281 return mDragInfo; 3282 } 3283 3284 /** 3285 * Calculate the nearest cell where the given object would be dropped. 3286 * 3287 * pixelX and pixelY should be in the coordinate system of layout 3288 */ 3289 private int[] findNearestArea(int pixelX, int pixelY, 3290 int spanX, int spanY, CellLayout layout, int[] recycle) { 3291 return layout.findNearestArea( 3292 pixelX, pixelY, spanX, spanY, recycle); 3293 } 3294 3295 void setup(DragController dragController) { 3296 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3297 mDragController = dragController; 3298 3299 // hardware layers on children are enabled on startup, but should be disabled until 3300 // needed 3301 updateChildrenLayersEnabled(false); 3302 setWallpaperDimension(); 3303 } 3304 3305 /** 3306 * Called at the end of a drag which originated on the workspace. 3307 */ 3308 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3309 boolean success) { 3310 if (success) { 3311 if (target != this) { 3312 if (mDragInfo != null) { 3313 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3314 if (mDragInfo.cell instanceof DropTarget) { 3315 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3316 } 3317 } 3318 } 3319 } else if (mDragInfo != null) { 3320 CellLayout cellLayout; 3321 if (mLauncher.isHotseatLayout(target)) { 3322 cellLayout = mLauncher.getHotseat().getLayout(); 3323 } else { 3324 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3325 } 3326 cellLayout.onDropChild(mDragInfo.cell); 3327 } 3328 if (d.cancelled && mDragInfo.cell != null) { 3329 mDragInfo.cell.setVisibility(VISIBLE); 3330 } 3331 mDragOutline = null; 3332 mDragInfo = null; 3333 3334 // Hide the scrolling indicator after you pick up an item 3335 hideScrollingIndicator(false); 3336 } 3337 3338 void updateItemLocationsInDatabase(CellLayout cl) { 3339 int count = cl.getShortcutsAndWidgets().getChildCount(); 3340 3341 int screen = indexOfChild(cl); 3342 int container = Favorites.CONTAINER_DESKTOP; 3343 3344 if (mLauncher.isHotseatLayout(cl)) { 3345 screen = -1; 3346 container = Favorites.CONTAINER_HOTSEAT; 3347 } 3348 3349 for (int i = 0; i < count; i++) { 3350 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3351 ItemInfo info = (ItemInfo) v.getTag(); 3352 // Null check required as the AllApps button doesn't have an item info 3353 if (info != null) { 3354 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3355 info.cellY, info.spanX, info.spanY); 3356 } 3357 } 3358 } 3359 3360 @Override 3361 public boolean supportsFlingToDelete() { 3362 return true; 3363 } 3364 3365 @Override 3366 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3367 // Do nothing 3368 } 3369 3370 @Override 3371 public void onFlingToDeleteCompleted() { 3372 // Do nothing 3373 } 3374 3375 public boolean isDropEnabled() { 3376 return true; 3377 } 3378 3379 @Override 3380 protected void onRestoreInstanceState(Parcelable state) { 3381 super.onRestoreInstanceState(state); 3382 Launcher.setScreen(mCurrentPage); 3383 } 3384 3385 @Override 3386 public void scrollLeft() { 3387 if (!isSmall() && !mIsSwitchingState) { 3388 super.scrollLeft(); 3389 } 3390 Folder openFolder = getOpenFolder(); 3391 if (openFolder != null) { 3392 openFolder.completeDragExit(); 3393 } 3394 } 3395 3396 @Override 3397 public void scrollRight() { 3398 if (!isSmall() && !mIsSwitchingState) { 3399 super.scrollRight(); 3400 } 3401 Folder openFolder = getOpenFolder(); 3402 if (openFolder != null) { 3403 openFolder.completeDragExit(); 3404 } 3405 } 3406 3407 @Override 3408 public boolean onEnterScrollArea(int x, int y, int direction) { 3409 // Ignore the scroll area if we are dragging over the hot seat 3410 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3411 if (mLauncher.getHotseat() != null && isPortrait) { 3412 Rect r = new Rect(); 3413 mLauncher.getHotseat().getHitRect(r); 3414 if (r.contains(x, y)) { 3415 return false; 3416 } 3417 } 3418 3419 boolean result = false; 3420 if (!isSmall() && !mIsSwitchingState) { 3421 mInScrollArea = true; 3422 3423 final int page = getNextPage() + 3424 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3425 3426 // We always want to exit the current layout to ensure parity of enter / exit 3427 setCurrentDropLayout(null); 3428 3429 if (0 <= page && page < getChildCount()) { 3430 CellLayout layout = (CellLayout) getChildAt(page); 3431 setCurrentDragOverlappingLayout(layout); 3432 3433 // Workspace is responsible for drawing the edge glow on adjacent pages, 3434 // so we need to redraw the workspace when this may have changed. 3435 invalidate(); 3436 result = true; 3437 } 3438 } 3439 return result; 3440 } 3441 3442 @Override 3443 public boolean onExitScrollArea() { 3444 boolean result = false; 3445 if (mInScrollArea) { 3446 invalidate(); 3447 CellLayout layout = getCurrentDropLayout(); 3448 setCurrentDropLayout(layout); 3449 setCurrentDragOverlappingLayout(layout); 3450 3451 result = true; 3452 mInScrollArea = false; 3453 } 3454 return result; 3455 } 3456 3457 private void onResetScrollArea() { 3458 setCurrentDragOverlappingLayout(null); 3459 mInScrollArea = false; 3460 } 3461 3462 /** 3463 * Returns a specific CellLayout 3464 */ 3465 CellLayout getParentCellLayoutForView(View v) { 3466 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3467 for (CellLayout layout : layouts) { 3468 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3469 return layout; 3470 } 3471 } 3472 return null; 3473 } 3474 3475 /** 3476 * Returns a list of all the CellLayouts in the workspace. 3477 */ 3478 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3479 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3480 int screenCount = getChildCount(); 3481 for (int screen = 0; screen < screenCount; screen++) { 3482 layouts.add(((CellLayout) getChildAt(screen))); 3483 } 3484 if (mLauncher.getHotseat() != null) { 3485 layouts.add(mLauncher.getHotseat().getLayout()); 3486 } 3487 return layouts; 3488 } 3489 3490 /** 3491 * We should only use this to search for specific children. Do not use this method to modify 3492 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3493 * the hotseat and workspace pages 3494 */ 3495 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3496 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3497 new ArrayList<ShortcutAndWidgetContainer>(); 3498 int screenCount = getChildCount(); 3499 for (int screen = 0; screen < screenCount; screen++) { 3500 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3501 } 3502 if (mLauncher.getHotseat() != null) { 3503 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3504 } 3505 return childrenLayouts; 3506 } 3507 3508 public Folder getFolderForTag(Object tag) { 3509 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3510 getAllShortcutAndWidgetContainers(); 3511 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3512 int count = layout.getChildCount(); 3513 for (int i = 0; i < count; i++) { 3514 View child = layout.getChildAt(i); 3515 if (child instanceof Folder) { 3516 Folder f = (Folder) child; 3517 if (f.getInfo() == tag && f.getInfo().opened) { 3518 return f; 3519 } 3520 } 3521 } 3522 } 3523 return null; 3524 } 3525 3526 public View getViewForTag(Object tag) { 3527 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3528 getAllShortcutAndWidgetContainers(); 3529 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3530 int count = layout.getChildCount(); 3531 for (int i = 0; i < count; i++) { 3532 View child = layout.getChildAt(i); 3533 if (child.getTag() == tag) { 3534 return child; 3535 } 3536 } 3537 } 3538 return null; 3539 } 3540 3541 void clearDropTargets() { 3542 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3543 getAllShortcutAndWidgetContainers(); 3544 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3545 int childCount = layout.getChildCount(); 3546 for (int j = 0; j < childCount; j++) { 3547 View v = layout.getChildAt(j); 3548 if (v instanceof DropTarget) { 3549 mDragController.removeDropTarget((DropTarget) v); 3550 } 3551 } 3552 } 3553 } 3554 3555 void removeItems(final ArrayList<String> packages) { 3556 final HashSet<String> packageNames = new HashSet<String>(); 3557 packageNames.addAll(packages); 3558 3559 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3560 for (final CellLayout layoutParent: cellLayouts) { 3561 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3562 3563 // Avoid ANRs by treating each screen separately 3564 post(new Runnable() { 3565 public void run() { 3566 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3567 childrenToRemove.clear(); 3568 3569 int childCount = layout.getChildCount(); 3570 for (int j = 0; j < childCount; j++) { 3571 final View view = layout.getChildAt(j); 3572 Object tag = view.getTag(); 3573 3574 if (tag instanceof ShortcutInfo) { 3575 final ShortcutInfo info = (ShortcutInfo) tag; 3576 final Intent intent = info.intent; 3577 final ComponentName name = intent.getComponent(); 3578 3579 if (name != null) { 3580 if (packageNames.contains(name.getPackageName())) { 3581 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3582 childrenToRemove.add(view); 3583 } 3584 } 3585 } else if (tag instanceof FolderInfo) { 3586 final FolderInfo info = (FolderInfo) tag; 3587 final ArrayList<ShortcutInfo> contents = info.contents; 3588 final int contentsCount = contents.size(); 3589 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3590 new ArrayList<ShortcutInfo>(); 3591 3592 for (int k = 0; k < contentsCount; k++) { 3593 final ShortcutInfo appInfo = contents.get(k); 3594 final Intent intent = appInfo.intent; 3595 final ComponentName name = intent.getComponent(); 3596 3597 if (name != null) { 3598 if (packageNames.contains(name.getPackageName())) { 3599 appsToRemoveFromFolder.add(appInfo); 3600 } 3601 } 3602 } 3603 for (ShortcutInfo item: appsToRemoveFromFolder) { 3604 info.remove(item); 3605 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3606 } 3607 } else if (tag instanceof LauncherAppWidgetInfo) { 3608 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3609 final ComponentName provider = info.providerName; 3610 if (provider != null) { 3611 if (packageNames.contains(provider.getPackageName())) { 3612 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3613 childrenToRemove.add(view); 3614 } 3615 } 3616 } 3617 } 3618 3619 childCount = childrenToRemove.size(); 3620 for (int j = 0; j < childCount; j++) { 3621 View child = childrenToRemove.get(j); 3622 // Note: We can not remove the view directly from CellLayoutChildren as this 3623 // does not re-mark the spaces as unoccupied. 3624 layoutParent.removeViewInLayout(child); 3625 if (child instanceof DropTarget) { 3626 mDragController.removeDropTarget((DropTarget)child); 3627 } 3628 } 3629 3630 if (childCount > 0) { 3631 layout.requestLayout(); 3632 layout.invalidate(); 3633 } 3634 } 3635 }); 3636 } 3637 3638 // Clean up new-apps animation list 3639 post(new Runnable() { 3640 @Override 3641 public void run() { 3642 String spKey = LauncherApplication.getSharedPreferencesKey(); 3643 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3644 Context.MODE_PRIVATE); 3645 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3646 null); 3647 3648 // Remove all queued items that match the same package 3649 if (newApps != null) { 3650 synchronized (newApps) { 3651 Iterator<String> iter = newApps.iterator(); 3652 while (iter.hasNext()) { 3653 try { 3654 Intent intent = Intent.parseUri(iter.next(), 0); 3655 String pn = ItemInfo.getPackageName(intent); 3656 if (packageNames.contains(pn)) { 3657 iter.remove(); 3658 } 3659 } catch (URISyntaxException e) {} 3660 } 3661 } 3662 } 3663 } 3664 }); 3665 } 3666 3667 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3668 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3669 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3670 int childCount = layout.getChildCount(); 3671 for (int j = 0; j < childCount; j++) { 3672 final View view = layout.getChildAt(j); 3673 Object tag = view.getTag(); 3674 if (tag instanceof ShortcutInfo) { 3675 ShortcutInfo info = (ShortcutInfo) tag; 3676 // We need to check for ACTION_MAIN otherwise getComponent() might 3677 // return null for some shortcuts (for instance, for shortcuts to 3678 // web pages.) 3679 final Intent intent = info.intent; 3680 final ComponentName name = intent.getComponent(); 3681 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3682 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3683 final int appCount = apps.size(); 3684 for (int k = 0; k < appCount; k++) { 3685 ApplicationInfo app = apps.get(k); 3686 if (app.componentName.equals(name)) { 3687 BubbleTextView shortcut = (BubbleTextView) view; 3688 info.updateIcon(mIconCache); 3689 info.title = app.title.toString(); 3690 shortcut.applyFromShortcutInfo(info, mIconCache); 3691 } 3692 } 3693 } 3694 } 3695 } 3696 } 3697 } 3698 3699 void moveToDefaultScreen(boolean animate) { 3700 if (!isSmall()) { 3701 if (animate) { 3702 snapToPage(mDefaultPage); 3703 } else { 3704 setCurrentPage(mDefaultPage); 3705 } 3706 } 3707 getChildAt(mDefaultPage).requestFocus(); 3708 } 3709 3710 @Override 3711 public void syncPages() { 3712 } 3713 3714 @Override 3715 public void syncPageItems(int page, boolean immediate) { 3716 } 3717 3718 @Override 3719 protected String getCurrentPageDescription() { 3720 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3721 return String.format(getContext().getString(R.string.workspace_scroll_format), 3722 page + 1, getChildCount()); 3723 } 3724 3725 public void getLocationInDragLayer(int[] loc) { 3726 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3727 } 3728 3729 void setFadeForOverScroll(float fade) { 3730 if (!isScrollingIndicatorEnabled()) return; 3731 3732 mOverscrollFade = fade; 3733 float reducedFade = 0.5f + 0.5f * (1 - fade); 3734 final ViewGroup parent = (ViewGroup) getParent(); 3735 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3736 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3737 final View scrollIndicator = getScrollingIndicator(); 3738 3739 cancelScrollingIndicatorAnimations(); 3740 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3741 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3742 scrollIndicator.setAlpha(1 - fade); 3743 } 3744} 3745