Workspace.java revision 3a0469d1e40459529e2d4d57ebc493f930f7c01a
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.Paint; 38import android.graphics.Point; 39import android.graphics.PointF; 40import android.graphics.Rect; 41import android.graphics.Region.Op; 42import android.graphics.drawable.Drawable; 43import android.os.IBinder; 44import android.os.Parcelable; 45import android.util.AttributeSet; 46import android.util.DisplayMetrics; 47import android.util.Log; 48import android.view.Display; 49import android.view.MotionEvent; 50import android.view.View; 51import android.view.ViewGroup; 52import android.view.animation.DecelerateInterpolator; 53import android.widget.ImageView; 54import android.widget.TextView; 55 56import com.android.launcher.R; 57import com.android.launcher2.FolderIcon.FolderRingAnimator; 58import com.android.launcher2.LauncherSettings.Favorites; 59 60import java.net.URISyntaxException; 61import java.util.ArrayList; 62import java.util.HashSet; 63import java.util.Set; 64 65/** 66 * The workspace is a wide area with a wallpaper and a finite number of pages. 67 * Each page contains a number of icons, folders or widgets the user can 68 * interact with. A workspace is meant to be used with a fixed width only. 69 */ 70public class Workspace extends SmoothPagedView 71 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 72 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 73 private static final String TAG = "Launcher.Workspace"; 74 75 // Y rotation to apply to the workspace screens 76 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 77 78 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 79 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 80 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 81 82 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 83 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 84 private static final int FLING_THRESHOLD_VELOCITY = 500; 85 86 // These animators are used to fade the children's outlines 87 private ObjectAnimator mChildrenOutlineFadeInAnimation; 88 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 89 private float mChildrenOutlineAlpha = 0; 90 91 // These properties refer to the background protection gradient used for AllApps and Customize 92 private ValueAnimator mBackgroundFadeInAnimation; 93 private ValueAnimator mBackgroundFadeOutAnimation; 94 private Drawable mBackground; 95 boolean mDrawBackground = true; 96 private float mBackgroundAlpha = 0; 97 private float mOverScrollMaxBackgroundAlpha = 0.0f; 98 99 private float mWallpaperScrollRatio = 1.0f; 100 101 private final WallpaperManager mWallpaperManager; 102 private IBinder mWindowToken; 103 private static final float WALLPAPER_SCREENS_SPAN = 2f; 104 105 private int mDefaultPage; 106 107 /** 108 * CellInfo for the cell that is currently being dragged 109 */ 110 private CellLayout.CellInfo mDragInfo; 111 112 /** 113 * Target drop area calculated during last acceptDrop call. 114 */ 115 private int[] mTargetCell = new int[2]; 116 private int mDragOverX = -1; 117 private int mDragOverY = -1; 118 119 static Rect mLandscapeCellLayoutMetrics = null; 120 static Rect mPortraitCellLayoutMetrics = null; 121 122 /** 123 * The CellLayout that is currently being dragged over 124 */ 125 private CellLayout mDragTargetLayout = null; 126 /** 127 * The CellLayout that we will show as glowing 128 */ 129 private CellLayout mDragOverlappingLayout = null; 130 131 /** 132 * The CellLayout which will be dropped to 133 */ 134 private CellLayout mDropToLayout = null; 135 136 private Launcher mLauncher; 137 private IconCache mIconCache; 138 private DragController mDragController; 139 140 // These are temporary variables to prevent having to allocate a new object just to 141 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 142 private int[] mTempCell = new int[2]; 143 private int[] mTempEstimate = new int[2]; 144 private float[] mDragViewVisualCenter = new float[2]; 145 private float[] mTempDragCoordinates = new float[2]; 146 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 147 private float[] mTempDragBottomRightCoordinates = new float[2]; 148 private Matrix mTempInverseMatrix = new Matrix(); 149 150 private SpringLoadedDragController mSpringLoadedDragController; 151 private float mSpringLoadedShrinkFactor; 152 153 private static final int DEFAULT_CELL_COUNT_X = 4; 154 private static final int DEFAULT_CELL_COUNT_Y = 4; 155 156 // State variable that indicates whether the pages are small (ie when you're 157 // in all apps or customize mode) 158 159 enum State { NORMAL, SPRING_LOADED, SMALL }; 160 private State mState = State.NORMAL; 161 private boolean mIsSwitchingState = false; 162 163 boolean mAnimatingViewIntoPlace = false; 164 boolean mIsDragOccuring = false; 165 boolean mChildrenLayersEnabled = true; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 171 private Bitmap mDragOutline = null; 172 private final Rect mTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 private float mOverscrollFade = 0; 175 private boolean mOverscrollTransformsSet; 176 public static final int DRAG_BITMAP_PADDING = 2; 177 private boolean mWorkspaceFadeInAdjacentScreens; 178 179 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 180 int mWallpaperWidth; 181 int mWallpaperHeight; 182 WallpaperOffsetInterpolator mWallpaperOffset; 183 boolean mUpdateWallpaperOffsetImmediately = false; 184 private Runnable mDelayedResizeRunnable; 185 private Runnable mDelayedSnapToPageRunnable; 186 private Point mDisplaySize = new Point(); 187 private boolean mIsStaticWallpaper; 188 private int mWallpaperTravelWidth; 189 private int mSpringLoadedPageSpacing; 190 private int mCameraDistance; 191 192 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 193 private static final int FOLDER_CREATION_TIMEOUT = 0; 194 private static final int REORDER_TIMEOUT = 250; 195 private final Alarm mFolderCreationAlarm = new Alarm(); 196 private final Alarm mReorderAlarm = new Alarm(); 197 private FolderRingAnimator mDragFolderRingAnimator = null; 198 private FolderIcon mDragOverFolderIcon = null; 199 private boolean mCreateUserFolderOnDrop = false; 200 private boolean mAddToExistingFolderOnDrop = false; 201 private DropTarget.DragEnforcer mDragEnforcer; 202 private float mMaxDistanceForFolderCreation; 203 204 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 205 private float mXDown; 206 private float mYDown; 207 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 208 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 209 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 210 211 // Relating to the animation of items being dropped externally 212 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 213 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 214 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 215 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 216 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 217 218 // Related to dragging, folder creation and reordering 219 private static final int DRAG_MODE_NONE = 0; 220 private static final int DRAG_MODE_CREATE_FOLDER = 1; 221 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 222 private static final int DRAG_MODE_REORDER = 3; 223 private int mDragMode = DRAG_MODE_NONE; 224 private int mLastReorderX = -1; 225 private int mLastReorderY = -1; 226 227 // These variables are used for storing the initial and final values during workspace animations 228 private int mSavedScrollX; 229 private float mSavedRotationY; 230 private float mSavedTranslationX; 231 private float mCurrentScaleX; 232 private float mCurrentScaleY; 233 private float mCurrentRotationY; 234 private float mCurrentTranslationX; 235 private float mCurrentTranslationY; 236 private float[] mOldTranslationXs; 237 private float[] mOldTranslationYs; 238 private float[] mOldScaleXs; 239 private float[] mOldScaleYs; 240 private float[] mOldBackgroundAlphas; 241 private float[] mOldAlphas; 242 private float[] mNewTranslationXs; 243 private float[] mNewTranslationYs; 244 private float[] mNewScaleXs; 245 private float[] mNewScaleYs; 246 private float[] mNewBackgroundAlphas; 247 private float[] mNewAlphas; 248 private float[] mNewRotationYs; 249 private float mTransitionProgress; 250 251 /** 252 * Used to inflate the Workspace from XML. 253 * 254 * @param context The application's context. 255 * @param attrs The attributes set containing the Workspace's customization values. 256 */ 257 public Workspace(Context context, AttributeSet attrs) { 258 this(context, attrs, 0); 259 } 260 261 /** 262 * Used to inflate the Workspace from XML. 263 * 264 * @param context The application's context. 265 * @param attrs The attributes set containing the Workspace's customization values. 266 * @param defStyle Unused. 267 */ 268 public Workspace(Context context, AttributeSet attrs, int defStyle) { 269 super(context, attrs, defStyle); 270 mContentIsRefreshable = false; 271 272 mDragEnforcer = new DropTarget.DragEnforcer(context); 273 // With workspace, data is available straight from the get-go 274 setDataIsReady(); 275 276 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 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 295 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 296 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 297 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 298 displayMetrics.density; 299 300 cellCountX = 1; 301 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 302 cellCountX++; 303 } 304 305 cellCountY = 1; 306 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 307 <= smallestScreenDim - systemBarHeight) { 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 mLauncher = (Launcher) context; 330 initWorkspace(); 331 332 // Disable multitouch across the workspace/all apps/customize tray 333 setMotionEventSplittingEnabled(true); 334 335 // Unless otherwise specified this view is important for accessibility. 336 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 337 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 338 } 339 } 340 341 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 342 // dimension if unsuccessful 343 public int[] estimateItemSize(int hSpan, int vSpan, 344 ItemInfo itemInfo, boolean springLoaded) { 345 int[] size = new int[2]; 346 if (getChildCount() > 0) { 347 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 348 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 349 size[0] = r.width(); 350 size[1] = r.height(); 351 if (springLoaded) { 352 size[0] *= mSpringLoadedShrinkFactor; 353 size[1] *= mSpringLoadedShrinkFactor; 354 } 355 return size; 356 } else { 357 size[0] = Integer.MAX_VALUE; 358 size[1] = Integer.MAX_VALUE; 359 return size; 360 } 361 } 362 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 363 int hCell, int vCell, int hSpan, int vSpan) { 364 Rect r = new Rect(); 365 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 366 return r; 367 } 368 369 public void onDragStart(DragSource source, Object info, int dragAction) { 370 mIsDragOccuring = true; 371 updateChildrenLayersEnabled(false); 372 mLauncher.lockScreenOrientation(); 373 setChildrenBackgroundAlphaMultipliers(1f); 374 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 375 InstallShortcutReceiver.enableInstallQueue(); 376 UninstallShortcutReceiver.enableUninstallQueue(); 377 } 378 379 public void onDragEnd() { 380 mIsDragOccuring = false; 381 updateChildrenLayersEnabled(false); 382 mLauncher.unlockScreenOrientation(false); 383 384 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 385 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 386 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 387 } 388 389 /** 390 * Initializes various states for this workspace. 391 */ 392 protected void initWorkspace() { 393 Context context = getContext(); 394 mCurrentPage = mDefaultPage; 395 Launcher.setScreen(mCurrentPage); 396 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 397 mIconCache = app.getIconCache(); 398 setWillNotDraw(false); 399 setChildrenDrawnWithCacheEnabled(true); 400 401 final Resources res = getResources(); 402 try { 403 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 404 } catch (Resources.NotFoundException e) { 405 // In this case, we will skip drawing background protection 406 } 407 408 mWallpaperOffset = new WallpaperOffsetInterpolator(); 409 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 410 display.getSize(mDisplaySize); 411 mWallpaperTravelWidth = (int) (mDisplaySize.x * 412 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 413 414 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 415 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 416 } 417 418 @Override 419 protected int getScrollMode() { 420 return SmoothPagedView.X_LARGE_MODE; 421 } 422 423 @Override 424 public void onChildViewAdded(View parent, View child) { 425 if (!(child instanceof CellLayout)) { 426 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 427 } 428 CellLayout cl = ((CellLayout) child); 429 cl.setOnInterceptTouchListener(this); 430 cl.setClickable(true); 431 cl.enableHardwareLayers(); 432 cl.setContentDescription(getContext().getString( 433 R.string.workspace_description_format, getChildCount())); 434 } 435 436 @Override 437 public void onChildViewRemoved(View parent, View child) { 438 } 439 440 protected boolean shouldDrawChild(View child) { 441 final CellLayout cl = (CellLayout) child; 442 return super.shouldDrawChild(child) && 443 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 444 cl.getBackgroundAlpha() > 0); 445 } 446 447 /** 448 * @return The open folder on the current screen, or null if there is none 449 */ 450 Folder getOpenFolder() { 451 DragLayer dragLayer = mLauncher.getDragLayer(); 452 int count = dragLayer.getChildCount(); 453 for (int i = 0; i < count; i++) { 454 View child = dragLayer.getChildAt(i); 455 if (child instanceof Folder) { 456 Folder folder = (Folder) child; 457 if (folder.getInfo().opened) 458 return folder; 459 } 460 } 461 return null; 462 } 463 464 boolean isTouchActive() { 465 return mTouchState != TOUCH_STATE_REST; 466 } 467 468 /** 469 * Adds the specified child in the specified screen. The position and dimension of 470 * the child are defined by x, y, spanX and spanY. 471 * 472 * @param child The child to add in one of the workspace's screens. 473 * @param screen The screen in which to add the child. 474 * @param x The X position of the child in the screen's grid. 475 * @param y The Y position of the child in the screen's grid. 476 * @param spanX The number of cells spanned horizontally by the child. 477 * @param spanY The number of cells spanned vertically by the child. 478 */ 479 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 480 addInScreen(child, container, screen, x, y, spanX, spanY, false); 481 } 482 483 /** 484 * Adds the specified child in the specified screen. The position and dimension of 485 * the child are defined by x, y, spanX and spanY. 486 * 487 * @param child The child to add in one of the workspace's screens. 488 * @param screen The screen in which to add the child. 489 * @param x The X position of the child in the screen's grid. 490 * @param y The Y position of the child in the screen's grid. 491 * @param spanX The number of cells spanned horizontally by the child. 492 * @param spanY The number of cells spanned vertically by the child. 493 * @param insert When true, the child is inserted at the beginning of the children list. 494 */ 495 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 496 boolean insert) { 497 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 498 if (screen < 0 || screen >= getChildCount()) { 499 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 500 + " (was " + screen + "); skipping child"); 501 return; 502 } 503 } 504 505 final CellLayout layout; 506 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 507 layout = mLauncher.getHotseat().getLayout(); 508 child.setOnKeyListener(null); 509 510 // Hide folder title in the hotseat 511 if (child instanceof FolderIcon) { 512 ((FolderIcon) child).setTextVisible(false); 513 } 514 515 if (screen < 0) { 516 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 517 } else { 518 // Note: We do this to ensure that the hotseat is always laid out in the orientation 519 // of the hotseat in order regardless of which orientation they were added 520 x = mLauncher.getHotseat().getCellXFromOrder(screen); 521 y = mLauncher.getHotseat().getCellYFromOrder(screen); 522 } 523 } else { 524 // Show folder title if not in the hotseat 525 if (child instanceof FolderIcon) { 526 ((FolderIcon) child).setTextVisible(true); 527 } 528 529 layout = (CellLayout) getChildAt(screen); 530 child.setOnKeyListener(new IconKeyEventListener()); 531 } 532 533 LayoutParams genericLp = child.getLayoutParams(); 534 CellLayout.LayoutParams lp; 535 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 536 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 537 } else { 538 lp = (CellLayout.LayoutParams) genericLp; 539 lp.cellX = x; 540 lp.cellY = y; 541 lp.cellHSpan = spanX; 542 lp.cellVSpan = spanY; 543 } 544 545 if (spanX < 0 && spanY < 0) { 546 lp.isLockedToGrid = false; 547 } 548 549 // Get the canonical child id to uniquely represent this view in this screen 550 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 551 boolean markCellsAsOccupied = !(child instanceof Folder); 552 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 553 // TODO: This branch occurs when the workspace is adding views 554 // outside of the defined grid 555 // maybe we should be deleting these items from the LauncherModel? 556 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 557 } 558 559 if (!(child instanceof Folder)) { 560 child.setHapticFeedbackEnabled(false); 561 child.setOnLongClickListener(mLongClickListener); 562 } 563 if (child instanceof DropTarget) { 564 mDragController.addDropTarget((DropTarget) child); 565 } 566 } 567 568 /** 569 * Check if the point (x, y) hits a given page. 570 */ 571 private boolean hitsPage(int index, float x, float y) { 572 final View page = getChildAt(index); 573 if (page != null) { 574 float[] localXY = { x, y }; 575 mapPointFromSelfToChild(page, localXY); 576 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 577 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 578 } 579 return false; 580 } 581 582 @Override 583 protected boolean hitsPreviousPage(float x, float y) { 584 // mNextPage is set to INVALID_PAGE whenever we are stationary. 585 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 586 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 587 588 // Only allow tap to next page on large devices, where there's significant margin outside 589 // the active workspace 590 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 591 } 592 593 @Override 594 protected boolean hitsNextPage(float x, float y) { 595 // mNextPage is set to INVALID_PAGE whenever we are stationary. 596 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 597 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 598 599 // Only allow tap to next page on large devices, where there's significant margin outside 600 // the active workspace 601 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 602 } 603 604 /** 605 * Called directly from a CellLayout (not by the framework), after we've been added as a 606 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 607 * that it should intercept touch events, which is not something that is normally supported. 608 */ 609 @Override 610 public boolean onTouch(View v, MotionEvent event) { 611 return (isSmall() || !isFinishedSwitchingState()); 612 } 613 614 public boolean isSwitchingState() { 615 return mIsSwitchingState; 616 } 617 618 /** This differs from isSwitchingState in that we take into account how far the transition 619 * has completed. */ 620 public boolean isFinishedSwitchingState() { 621 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 622 } 623 624 protected void onWindowVisibilityChanged (int visibility) { 625 mLauncher.onWindowVisibilityChanged(visibility); 626 } 627 628 @Override 629 public boolean dispatchUnhandledMove(View focused, int direction) { 630 if (isSmall() || !isFinishedSwitchingState()) { 631 // when the home screens are shrunken, shouldn't allow side-scrolling 632 return false; 633 } 634 return super.dispatchUnhandledMove(focused, direction); 635 } 636 637 @Override 638 public boolean onInterceptTouchEvent(MotionEvent ev) { 639 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 640 case MotionEvent.ACTION_DOWN: 641 mXDown = ev.getX(); 642 mYDown = ev.getY(); 643 break; 644 case MotionEvent.ACTION_POINTER_UP: 645 case MotionEvent.ACTION_UP: 646 if (mTouchState == TOUCH_STATE_REST) { 647 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 648 if (!currentPage.lastDownOnOccupiedCell()) { 649 onWallpaperTap(ev); 650 } 651 } 652 } 653 return super.onInterceptTouchEvent(ev); 654 } 655 656 protected void reinflateWidgetsIfNecessary() { 657 final int clCount = getChildCount(); 658 for (int i = 0; i < clCount; i++) { 659 CellLayout cl = (CellLayout) getChildAt(i); 660 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 661 final int itemCount = swc.getChildCount(); 662 for (int j = 0; j < itemCount; j++) { 663 View v = swc.getChildAt(j); 664 665 if (v.getTag() instanceof LauncherAppWidgetInfo) { 666 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 667 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 668 if (lahv != null && lahv.orientationChangedSincedInflation()) { 669 mLauncher.removeAppWidget(info); 670 // Remove the current widget which is inflated with the wrong orientation 671 cl.removeView(lahv); 672 mLauncher.bindAppWidget(info); 673 } 674 } 675 } 676 } 677 } 678 679 @Override 680 protected void determineScrollingStart(MotionEvent ev) { 681 if (isSmall()) return; 682 if (!isFinishedSwitchingState()) return; 683 684 float deltaX = Math.abs(ev.getX() - mXDown); 685 float deltaY = Math.abs(ev.getY() - mYDown); 686 687 if (Float.compare(deltaX, 0f) == 0) return; 688 689 float slope = deltaY / deltaX; 690 float theta = (float) Math.atan(slope); 691 692 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 693 cancelCurrentPageLongPress(); 694 } 695 696 if (theta > MAX_SWIPE_ANGLE) { 697 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 698 return; 699 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 700 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 701 // increase the touch slop to make it harder to begin scrolling the workspace. This 702 // results in vertically scrolling widgets to more easily. The higher the angle, the 703 // more we increase touch slop. 704 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 705 float extraRatio = (float) 706 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 707 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 708 } else { 709 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 710 super.determineScrollingStart(ev); 711 } 712 } 713 714 @Override 715 protected boolean isScrollingIndicatorEnabled() { 716 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 717 } 718 719 protected void onPageBeginMoving() { 720 super.onPageBeginMoving(); 721 722 if (isHardwareAccelerated()) { 723 updateChildrenLayersEnabled(false); 724 } else { 725 if (mNextPage != INVALID_PAGE) { 726 // we're snapping to a particular screen 727 enableChildrenCache(mCurrentPage, mNextPage); 728 } else { 729 // this is when user is actively dragging a particular screen, they might 730 // swipe it either left or right (but we won't advance by more than one screen) 731 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 732 } 733 } 734 735 // Only show page outlines as we pan if we are on large screen 736 if (LauncherApplication.isScreenLarge()) { 737 showOutlines(); 738 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 739 } 740 741 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 742 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 743 if (!mWorkspaceFadeInAdjacentScreens) { 744 for (int i = 0; i < getChildCount(); ++i) { 745 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 746 } 747 } 748 749 // Show the scroll indicator as you pan the page 750 showScrollingIndicator(false); 751 } 752 753 protected void onPageEndMoving() { 754 super.onPageEndMoving(); 755 756 if (isHardwareAccelerated()) { 757 updateChildrenLayersEnabled(false); 758 } else { 759 clearChildrenCache(); 760 } 761 762 763 if (mDragController.isDragging()) { 764 if (isSmall()) { 765 // If we are in springloaded mode, then force an event to check if the current touch 766 // is under a new page (to scroll to) 767 mDragController.forceMoveEvent(); 768 } 769 } else { 770 // If we are not mid-dragging, hide the page outlines if we are on a large screen 771 if (LauncherApplication.isScreenLarge()) { 772 hideOutlines(); 773 } 774 775 // Hide the scroll indicator as you pan the page 776 if (!mDragController.isDragging()) { 777 hideScrollingIndicator(false); 778 } 779 } 780 mOverScrollMaxBackgroundAlpha = 0.0f; 781 782 if (mDelayedResizeRunnable != null) { 783 mDelayedResizeRunnable.run(); 784 mDelayedResizeRunnable = null; 785 } 786 787 if (mDelayedSnapToPageRunnable != null) { 788 mDelayedSnapToPageRunnable.run(); 789 mDelayedSnapToPageRunnable = null; 790 } 791 } 792 793 @Override 794 protected void notifyPageSwitchListener() { 795 super.notifyPageSwitchListener(); 796 Launcher.setScreen(mCurrentPage); 797 }; 798 799 // As a ratio of screen height, the total distance we want the parallax effect to span 800 // horizontally 801 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 802 float aspectRatio = width / (float) height; 803 804 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 805 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 806 // We will use these two data points to extrapolate how much the wallpaper parallax effect 807 // to span (ie travel) at any aspect ratio: 808 809 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 810 final float ASPECT_RATIO_PORTRAIT = 10/16f; 811 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 812 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 813 814 // To find out the desired width at different aspect ratios, we use the following two 815 // formulas, where the coefficient on x is the aspect ratio (width/height): 816 // (16/10)x + y = 1.5 817 // (10/16)x + y = 1.2 818 // We solve for x and y and end up with a final formula: 819 final float x = 820 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 821 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 822 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 823 return x * aspectRatio + y; 824 } 825 826 // The range of scroll values for Workspace 827 private int getScrollRange() { 828 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 829 } 830 831 protected void setWallpaperDimension() { 832 DisplayMetrics displayMetrics = new DisplayMetrics(); 833 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 834 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 835 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 836 837 // We need to ensure that there is enough extra space in the wallpaper for the intended 838 // parallax effects 839 if (LauncherApplication.isScreenLarge()) { 840 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 841 mWallpaperHeight = maxDim; 842 } else { 843 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 844 mWallpaperHeight = maxDim; 845 } 846 new Thread("setWallpaperDimension") { 847 public void run() { 848 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 849 } 850 }.start(); 851 } 852 853 private float wallpaperOffsetForCurrentScroll() { 854 // Set wallpaper offset steps (1 / (number of screens - 1)) 855 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 856 857 // For the purposes of computing the scrollRange and overScrollOffset, we assume 858 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 859 // there's no discrepancy between the wallpaper offset for a given page. 860 float layoutScale = mLayoutScale; 861 mLayoutScale = 1f; 862 int scrollRange = getScrollRange(); 863 864 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 865 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 866 adjustedScrollX *= mWallpaperScrollRatio; 867 mLayoutScale = layoutScale; 868 869 float scrollProgress = 870 adjustedScrollX / (float) scrollRange; 871 872 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 873 // The wallpaper travel width is how far, from left to right, the wallpaper will move 874 // at this orientation. On tablets in portrait mode we don't move all the way to the 875 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 876 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 877 878 float offsetInDips = wallpaperTravelWidth * scrollProgress + 879 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 880 float offset = offsetInDips / (float) mWallpaperWidth; 881 return offset; 882 } else { 883 return scrollProgress; 884 } 885 } 886 887 private void syncWallpaperOffsetWithScroll() { 888 final boolean enableWallpaperEffects = isHardwareAccelerated(); 889 if (enableWallpaperEffects) { 890 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 891 } 892 } 893 894 public void updateWallpaperOffsetImmediately() { 895 mUpdateWallpaperOffsetImmediately = true; 896 } 897 898 private void updateWallpaperOffsets() { 899 boolean updateNow = false; 900 boolean keepUpdating = true; 901 if (mUpdateWallpaperOffsetImmediately) { 902 updateNow = true; 903 keepUpdating = false; 904 mWallpaperOffset.jumpToFinal(); 905 mUpdateWallpaperOffsetImmediately = false; 906 } else { 907 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 908 } 909 if (updateNow) { 910 if (mWindowToken != null) { 911 mWallpaperManager.setWallpaperOffsets(mWindowToken, 912 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 913 } 914 } 915 if (keepUpdating) { 916 invalidate(); 917 } 918 } 919 920 @Override 921 protected void updateCurrentPageScroll() { 922 super.updateCurrentPageScroll(); 923 computeWallpaperScrollRatio(mCurrentPage); 924 } 925 926 @Override 927 protected void snapToPage(int whichPage) { 928 super.snapToPage(whichPage); 929 computeWallpaperScrollRatio(whichPage); 930 } 931 932 @Override 933 protected void snapToPage(int whichPage, int duration) { 934 super.snapToPage(whichPage, duration); 935 computeWallpaperScrollRatio(whichPage); 936 } 937 938 protected void snapToPage(int whichPage, Runnable r) { 939 if (mDelayedSnapToPageRunnable != null) { 940 mDelayedSnapToPageRunnable.run(); 941 } 942 mDelayedSnapToPageRunnable = r; 943 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 944 } 945 946 private void computeWallpaperScrollRatio(int page) { 947 // Here, we determine what the desired scroll would be with and without a layout scale, 948 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 949 // as though there is no layout scale. 950 float layoutScale = mLayoutScale; 951 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 952 mLayoutScale = 1.0f; 953 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 954 mLayoutScale = layoutScale; 955 if (scaled > 0) { 956 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 957 } else { 958 mWallpaperScrollRatio = 1f; 959 } 960 } 961 962 class WallpaperOffsetInterpolator { 963 float mFinalHorizontalWallpaperOffset = 0.0f; 964 float mFinalVerticalWallpaperOffset = 0.5f; 965 float mHorizontalWallpaperOffset = 0.0f; 966 float mVerticalWallpaperOffset = 0.5f; 967 long mLastWallpaperOffsetUpdateTime; 968 boolean mIsMovingFast; 969 boolean mOverrideHorizontalCatchupConstant; 970 float mHorizontalCatchupConstant = 0.35f; 971 float mVerticalCatchupConstant = 0.35f; 972 973 public WallpaperOffsetInterpolator() { 974 } 975 976 public void setOverrideHorizontalCatchupConstant(boolean override) { 977 mOverrideHorizontalCatchupConstant = override; 978 } 979 980 public void setHorizontalCatchupConstant(float f) { 981 mHorizontalCatchupConstant = f; 982 } 983 984 public void setVerticalCatchupConstant(float f) { 985 mVerticalCatchupConstant = f; 986 } 987 988 public boolean computeScrollOffset() { 989 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 990 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 991 mIsMovingFast = false; 992 return false; 993 } 994 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 995 996 long currentTime = System.currentTimeMillis(); 997 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 998 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 999 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1000 1001 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1002 if (!mIsMovingFast && xdiff > 0.07) { 1003 mIsMovingFast = true; 1004 } 1005 1006 float fractionToCatchUpIn1MsHorizontal; 1007 if (mOverrideHorizontalCatchupConstant) { 1008 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1009 } else if (mIsMovingFast) { 1010 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1011 } else { 1012 // slow 1013 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1014 } 1015 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1016 1017 fractionToCatchUpIn1MsHorizontal /= 33f; 1018 fractionToCatchUpIn1MsVertical /= 33f; 1019 1020 final float UPDATE_THRESHOLD = 0.00001f; 1021 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1022 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1023 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1024 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1025 1026 // Don't have any lag between workspace and wallpaper on non-large devices 1027 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1028 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1029 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1030 } else { 1031 float percentToCatchUpVertical = 1032 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1033 float percentToCatchUpHorizontal = 1034 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1035 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1036 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1037 } 1038 1039 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1040 return true; 1041 } 1042 1043 public float getCurrX() { 1044 return mHorizontalWallpaperOffset; 1045 } 1046 1047 public float getFinalX() { 1048 return mFinalHorizontalWallpaperOffset; 1049 } 1050 1051 public float getCurrY() { 1052 return mVerticalWallpaperOffset; 1053 } 1054 1055 public float getFinalY() { 1056 return mFinalVerticalWallpaperOffset; 1057 } 1058 1059 public void setFinalX(float x) { 1060 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1061 } 1062 1063 public void setFinalY(float y) { 1064 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1065 } 1066 1067 public void jumpToFinal() { 1068 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1069 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1070 } 1071 } 1072 1073 @Override 1074 public void computeScroll() { 1075 super.computeScroll(); 1076 syncWallpaperOffsetWithScroll(); 1077 } 1078 1079 void showOutlines() { 1080 if (!isSmall() && !mIsSwitchingState) { 1081 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1082 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1083 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1084 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1085 mChildrenOutlineFadeInAnimation.start(); 1086 } 1087 } 1088 1089 void hideOutlines() { 1090 if (!isSmall() && !mIsSwitchingState) { 1091 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1092 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1093 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1094 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1095 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1096 mChildrenOutlineFadeOutAnimation.start(); 1097 } 1098 } 1099 1100 public void showOutlinesTemporarily() { 1101 if (!mIsPageMoving && !isTouchActive()) { 1102 snapToPage(mCurrentPage); 1103 } 1104 } 1105 1106 public void setChildrenOutlineAlpha(float alpha) { 1107 mChildrenOutlineAlpha = alpha; 1108 for (int i = 0; i < getChildCount(); i++) { 1109 CellLayout cl = (CellLayout) getChildAt(i); 1110 cl.setBackgroundAlpha(alpha); 1111 } 1112 } 1113 1114 public float getChildrenOutlineAlpha() { 1115 return mChildrenOutlineAlpha; 1116 } 1117 1118 void disableBackground() { 1119 mDrawBackground = false; 1120 } 1121 void enableBackground() { 1122 mDrawBackground = true; 1123 } 1124 1125 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1126 if (mBackground == null) return; 1127 if (mBackgroundFadeInAnimation != null) { 1128 mBackgroundFadeInAnimation.cancel(); 1129 mBackgroundFadeInAnimation = null; 1130 } 1131 if (mBackgroundFadeOutAnimation != null) { 1132 mBackgroundFadeOutAnimation.cancel(); 1133 mBackgroundFadeOutAnimation = null; 1134 } 1135 float startAlpha = getBackgroundAlpha(); 1136 if (finalAlpha != startAlpha) { 1137 if (animated) { 1138 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1139 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1140 public void onAnimationUpdate(ValueAnimator animation) { 1141 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1142 } 1143 }); 1144 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1145 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1146 mBackgroundFadeOutAnimation.start(); 1147 } else { 1148 setBackgroundAlpha(finalAlpha); 1149 } 1150 } 1151 } 1152 1153 public void setBackgroundAlpha(float alpha) { 1154 if (alpha != mBackgroundAlpha) { 1155 mBackgroundAlpha = alpha; 1156 invalidate(); 1157 } 1158 } 1159 1160 public float getBackgroundAlpha() { 1161 return mBackgroundAlpha; 1162 } 1163 1164 float backgroundAlphaInterpolator(float r) { 1165 float pivotA = 0.1f; 1166 float pivotB = 0.4f; 1167 if (r < pivotA) { 1168 return 0; 1169 } else if (r > pivotB) { 1170 return 1.0f; 1171 } else { 1172 return (r - pivotA)/(pivotB - pivotA); 1173 } 1174 } 1175 1176 float overScrollBackgroundAlphaInterpolator(float r) { 1177 float threshold = 0.08f; 1178 1179 if (r > mOverScrollMaxBackgroundAlpha) { 1180 mOverScrollMaxBackgroundAlpha = r; 1181 } else if (r < mOverScrollMaxBackgroundAlpha) { 1182 r = mOverScrollMaxBackgroundAlpha; 1183 } 1184 1185 return Math.min(r / threshold, 1.0f); 1186 } 1187 1188 private void updatePageAlphaValues(int screenCenter) { 1189 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1190 if (mWorkspaceFadeInAdjacentScreens && 1191 mState == State.NORMAL && 1192 !mIsSwitchingState && 1193 !isInOverscroll) { 1194 for (int i = 0; i < getChildCount(); i++) { 1195 CellLayout child = (CellLayout) getChildAt(i); 1196 if (child != null) { 1197 float scrollProgress = getScrollProgress(screenCenter, child, i); 1198 float alpha = 1 - Math.abs(scrollProgress); 1199 child.getShortcutsAndWidgets().setAlpha(alpha); 1200 if (!mIsDragOccuring) { 1201 child.setBackgroundAlphaMultiplier( 1202 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1203 } else { 1204 child.setBackgroundAlphaMultiplier(1f); 1205 } 1206 } 1207 } 1208 } 1209 } 1210 1211 private void setChildrenBackgroundAlphaMultipliers(float a) { 1212 for (int i = 0; i < getChildCount(); i++) { 1213 CellLayout child = (CellLayout) getChildAt(i); 1214 child.setBackgroundAlphaMultiplier(a); 1215 } 1216 } 1217 1218 @Override 1219 protected void screenScrolled(int screenCenter) { 1220 super.screenScrolled(screenCenter); 1221 1222 updatePageAlphaValues(screenCenter); 1223 1224 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1225 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1226 CellLayout cl = (CellLayout) getChildAt(index); 1227 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1228 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1229 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1230 cl.setRotationY(rotation); 1231 setFadeForOverScroll(Math.abs(scrollProgress)); 1232 if (!mOverscrollTransformsSet) { 1233 mOverscrollTransformsSet = true; 1234 cl.setCameraDistance(mDensity * mCameraDistance); 1235 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1236 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1237 cl.setOverscrollTransformsDirty(true); 1238 } 1239 } else { 1240 if (mOverscrollFade != 0) { 1241 setFadeForOverScroll(0); 1242 } 1243 if (mOverscrollTransformsSet) { 1244 mOverscrollTransformsSet = false; 1245 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1246 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1247 } 1248 } 1249 } 1250 1251 @Override 1252 protected void overScroll(float amount) { 1253 acceleratedOverScroll(amount); 1254 } 1255 1256 protected void onAttachedToWindow() { 1257 super.onAttachedToWindow(); 1258 mWindowToken = getWindowToken(); 1259 computeScroll(); 1260 mDragController.setWindowToken(mWindowToken); 1261 } 1262 1263 protected void onDetachedFromWindow() { 1264 mWindowToken = null; 1265 } 1266 1267 @Override 1268 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1269 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1270 mUpdateWallpaperOffsetImmediately = true; 1271 } 1272 super.onLayout(changed, left, top, right, bottom); 1273 } 1274 1275 @Override 1276 protected void onDraw(Canvas canvas) { 1277 updateWallpaperOffsets(); 1278 1279 // Draw the background gradient if necessary 1280 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1281 int alpha = (int) (mBackgroundAlpha * 255); 1282 mBackground.setAlpha(alpha); 1283 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1284 getMeasuredHeight()); 1285 mBackground.draw(canvas); 1286 } 1287 1288 super.onDraw(canvas); 1289 } 1290 1291 boolean isDrawingBackgroundGradient() { 1292 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1293 } 1294 1295 @Override 1296 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1297 if (!mLauncher.isAllAppsVisible()) { 1298 final Folder openFolder = getOpenFolder(); 1299 if (openFolder != null) { 1300 return openFolder.requestFocus(direction, previouslyFocusedRect); 1301 } else { 1302 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1303 } 1304 } 1305 return false; 1306 } 1307 1308 @Override 1309 public int getDescendantFocusability() { 1310 if (isSmall()) { 1311 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1312 } 1313 return super.getDescendantFocusability(); 1314 } 1315 1316 @Override 1317 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1318 if (!mLauncher.isAllAppsVisible()) { 1319 final Folder openFolder = getOpenFolder(); 1320 if (openFolder != null) { 1321 openFolder.addFocusables(views, direction); 1322 } else { 1323 super.addFocusables(views, direction, focusableMode); 1324 } 1325 } 1326 } 1327 1328 public boolean isSmall() { 1329 return mState == State.SMALL || mState == State.SPRING_LOADED; 1330 } 1331 1332 void enableChildrenCache(int fromPage, int toPage) { 1333 if (fromPage > toPage) { 1334 final int temp = fromPage; 1335 fromPage = toPage; 1336 toPage = temp; 1337 } 1338 1339 final int screenCount = getChildCount(); 1340 1341 fromPage = Math.max(fromPage, 0); 1342 toPage = Math.min(toPage, screenCount - 1); 1343 1344 for (int i = fromPage; i <= toPage; i++) { 1345 final CellLayout layout = (CellLayout) getChildAt(i); 1346 layout.setChildrenDrawnWithCacheEnabled(true); 1347 layout.setChildrenDrawingCacheEnabled(true); 1348 } 1349 } 1350 1351 void clearChildrenCache() { 1352 final int screenCount = getChildCount(); 1353 for (int i = 0; i < screenCount; i++) { 1354 final CellLayout layout = (CellLayout) getChildAt(i); 1355 layout.setChildrenDrawnWithCacheEnabled(false); 1356 // In software mode, we don't want the items to continue to be drawn into bitmaps 1357 if (!isHardwareAccelerated()) { 1358 layout.setChildrenDrawingCacheEnabled(false); 1359 } 1360 } 1361 } 1362 1363 1364 private void updateChildrenLayersEnabled(boolean force) { 1365 boolean small = mState == State.SMALL || mIsSwitchingState; 1366 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1367 1368 if (enableChildrenLayers != mChildrenLayersEnabled) { 1369 mChildrenLayersEnabled = enableChildrenLayers; 1370 for (int i = 0; i < getPageCount(); i++) { 1371 CellLayout cl = (CellLayout) getChildAt(i); 1372 cl.getShortcutsAndWidgets().setLayerType( 1373 mChildrenLayersEnabled ? LAYER_TYPE_HARDWARE : LAYER_TYPE_NONE, null); 1374 } 1375 } 1376 } 1377 1378 public void buildPageHardwareLayers() { 1379 // force layers to be enabled just for the call to buildLayer 1380 updateChildrenLayersEnabled(true); 1381 if (getWindowToken() != null) { 1382 final int childCount = getChildCount(); 1383 for (int i = 0; i < childCount; i++) { 1384 CellLayout cl = (CellLayout) getChildAt(i); 1385 cl.getShortcutsAndWidgets().buildLayer(); 1386 } 1387 } 1388 updateChildrenLayersEnabled(false); 1389 } 1390 1391 protected void onWallpaperTap(MotionEvent ev) { 1392 final int[] position = mTempCell; 1393 getLocationOnScreen(position); 1394 1395 int pointerIndex = ev.getActionIndex(); 1396 position[0] += (int) ev.getX(pointerIndex); 1397 position[1] += (int) ev.getY(pointerIndex); 1398 1399 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1400 ev.getAction() == MotionEvent.ACTION_UP 1401 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1402 position[0], position[1], 0, null); 1403 } 1404 1405 /* 1406 * This interpolator emulates the rate at which the perceived scale of an object changes 1407 * as its distance from a camera increases. When this interpolator is applied to a scale 1408 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1409 * from the camera. 1410 */ 1411 static class ZInterpolator implements TimeInterpolator { 1412 private float focalLength; 1413 1414 public ZInterpolator(float foc) { 1415 focalLength = foc; 1416 } 1417 1418 public float getInterpolation(float input) { 1419 return (1.0f - focalLength / (focalLength + input)) / 1420 (1.0f - focalLength / (focalLength + 1.0f)); 1421 } 1422 } 1423 1424 /* 1425 * The exact reverse of ZInterpolator. 1426 */ 1427 static class InverseZInterpolator implements TimeInterpolator { 1428 private ZInterpolator zInterpolator; 1429 public InverseZInterpolator(float foc) { 1430 zInterpolator = new ZInterpolator(foc); 1431 } 1432 public float getInterpolation(float input) { 1433 return 1 - zInterpolator.getInterpolation(1 - input); 1434 } 1435 } 1436 1437 /* 1438 * ZInterpolator compounded with an ease-out. 1439 */ 1440 static class ZoomOutInterpolator implements TimeInterpolator { 1441 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1442 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1443 1444 public float getInterpolation(float input) { 1445 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1446 } 1447 } 1448 1449 /* 1450 * InvereZInterpolator compounded with an ease-out. 1451 */ 1452 static class ZoomInInterpolator implements TimeInterpolator { 1453 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1454 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1455 1456 public float getInterpolation(float input) { 1457 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1458 } 1459 } 1460 1461 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1462 1463 /* 1464 * 1465 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1466 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1467 * 1468 * These methods mark the appropriate pages as accepting drops (which alters their visual 1469 * appearance). 1470 * 1471 */ 1472 public void onDragStartedWithItem(View v) { 1473 final Canvas canvas = new Canvas(); 1474 1475 // The outline is used to visualize where the item will land if dropped 1476 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1477 } 1478 1479 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1480 final Canvas canvas = new Canvas(); 1481 1482 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1483 1484 // The outline is used to visualize where the item will land if dropped 1485 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1486 size[1], alphaClipPaint); 1487 } 1488 1489 public void exitWidgetResizeMode() { 1490 DragLayer dragLayer = mLauncher.getDragLayer(); 1491 dragLayer.clearAllResizeFrames(); 1492 } 1493 1494 private void initAnimationArrays() { 1495 final int childCount = getChildCount(); 1496 if (mOldTranslationXs != null) return; 1497 mOldTranslationXs = new float[childCount]; 1498 mOldTranslationYs = new float[childCount]; 1499 mOldScaleXs = new float[childCount]; 1500 mOldScaleYs = new float[childCount]; 1501 mOldBackgroundAlphas = new float[childCount]; 1502 mOldAlphas = new float[childCount]; 1503 mNewTranslationXs = new float[childCount]; 1504 mNewTranslationYs = new float[childCount]; 1505 mNewScaleXs = new float[childCount]; 1506 mNewScaleYs = new float[childCount]; 1507 mNewBackgroundAlphas = new float[childCount]; 1508 mNewAlphas = new float[childCount]; 1509 mNewRotationYs = new float[childCount]; 1510 } 1511 1512 Animator getChangeStateAnimation(final State state, boolean animated) { 1513 return getChangeStateAnimation(state, animated, 0); 1514 } 1515 1516 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1517 if (mState == state) { 1518 return null; 1519 } 1520 1521 // Initialize animation arrays for the first time if necessary 1522 initAnimationArrays(); 1523 1524 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1525 1526 // Stop any scrolling, move to the current page right away 1527 setCurrentPage(getNextPage()); 1528 1529 final State oldState = mState; 1530 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1531 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1532 final boolean oldStateIsSmall = (oldState == State.SMALL); 1533 mState = state; 1534 final boolean stateIsNormal = (state == State.NORMAL); 1535 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1536 final boolean stateIsSmall = (state == State.SMALL); 1537 float finalScaleFactor = 1.0f; 1538 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1539 float translationX = 0; 1540 float translationY = 0; 1541 boolean zoomIn = true; 1542 1543 if (state != State.NORMAL) { 1544 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1545 setPageSpacing(mSpringLoadedPageSpacing); 1546 if (oldStateIsNormal && stateIsSmall) { 1547 zoomIn = false; 1548 setLayoutScale(finalScaleFactor); 1549 updateChildrenLayersEnabled(false); 1550 } else { 1551 finalBackgroundAlpha = 1.0f; 1552 setLayoutScale(finalScaleFactor); 1553 } 1554 } else { 1555 setPageSpacing(PagedView.AUTOMATIC_PAGE_SPACING); 1556 setLayoutScale(1.0f); 1557 } 1558 1559 final int duration = zoomIn ? 1560 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1561 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1562 for (int i = 0; i < getChildCount(); i++) { 1563 final CellLayout cl = (CellLayout) getChildAt(i); 1564 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1565 (i == mCurrentPage)) ? 1f : 0f; 1566 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1567 float initialAlpha = currentAlpha; 1568 1569 // Determine the pages alpha during the state transition 1570 if ((oldStateIsSmall && stateIsNormal) || 1571 (oldStateIsNormal && stateIsSmall)) { 1572 // To/from workspace - only show the current page unless the transition is not 1573 // animated and the animation end callback below doesn't run; 1574 // or, if we're in spring-loaded mode 1575 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1576 finalAlpha = 1f; 1577 } else { 1578 initialAlpha = 0f; 1579 finalAlpha = 0f; 1580 } 1581 } 1582 1583 mOldAlphas[i] = initialAlpha; 1584 mNewAlphas[i] = finalAlpha; 1585 if (animated) { 1586 mOldTranslationXs[i] = cl.getTranslationX(); 1587 mOldTranslationYs[i] = cl.getTranslationY(); 1588 mOldScaleXs[i] = cl.getScaleX(); 1589 mOldScaleYs[i] = cl.getScaleY(); 1590 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1591 1592 mNewTranslationXs[i] = translationX; 1593 mNewTranslationYs[i] = translationY; 1594 mNewScaleXs[i] = finalScaleFactor; 1595 mNewScaleYs[i] = finalScaleFactor; 1596 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1597 } else { 1598 cl.setTranslationX(translationX); 1599 cl.setTranslationY(translationY); 1600 cl.setScaleX(finalScaleFactor); 1601 cl.setScaleY(finalScaleFactor); 1602 cl.setBackgroundAlpha(finalBackgroundAlpha); 1603 cl.setShortcutAndWidgetAlpha(finalAlpha); 1604 } 1605 } 1606 1607 if (animated) { 1608 for (int index = 0; index < getChildCount(); index++) { 1609 final int i = index; 1610 final CellLayout cl = (CellLayout) getChildAt(i); 1611 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1612 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1613 cl.setTranslationX(mNewTranslationXs[i]); 1614 cl.setTranslationY(mNewTranslationYs[i]); 1615 cl.setScaleX(mNewScaleXs[i]); 1616 cl.setScaleY(mNewScaleYs[i]); 1617 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1618 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1619 cl.setRotationY(mNewRotationYs[i]); 1620 } else { 1621 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1622 a.translationX(mNewTranslationXs[i]) 1623 .translationY(mNewTranslationYs[i]) 1624 .scaleX(mNewScaleXs[i]) 1625 .scaleY(mNewScaleYs[i]) 1626 .setDuration(duration) 1627 .setInterpolator(mZoomInInterpolator); 1628 anim.play(a); 1629 1630 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1631 LauncherViewPropertyAnimator alphaAnim = 1632 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1633 alphaAnim.alpha(mNewAlphas[i]) 1634 .setDuration(duration) 1635 .setInterpolator(mZoomInInterpolator); 1636 anim.play(alphaAnim); 1637 } 1638 if (mOldBackgroundAlphas[i] != 0 || 1639 mNewBackgroundAlphas[i] != 0) { 1640 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1641 bgAnim.setInterpolator(mZoomInInterpolator); 1642 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1643 public void onAnimationUpdate(float a, float b) { 1644 cl.setBackgroundAlpha( 1645 a * mOldBackgroundAlphas[i] + 1646 b * mNewBackgroundAlphas[i]); 1647 } 1648 }); 1649 anim.play(bgAnim); 1650 } 1651 } 1652 } 1653 buildPageHardwareLayers(); 1654 anim.setStartDelay(delay); 1655 } 1656 1657 if (stateIsSpringLoaded) { 1658 // Right now we're covered by Apps Customize 1659 // Show the background gradient immediately, so the gradient will 1660 // be showing once AppsCustomize disappears 1661 animateBackgroundGradient(getResources().getInteger( 1662 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1663 } else { 1664 // Fade the background gradient away 1665 animateBackgroundGradient(0f, true); 1666 } 1667 return anim; 1668 } 1669 1670 @Override 1671 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1672 mIsSwitchingState = true; 1673 cancelScrollingIndicatorAnimations(); 1674 } 1675 1676 @Override 1677 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1678 } 1679 1680 @Override 1681 public void onLauncherTransitionStep(Launcher l, float t) { 1682 mTransitionProgress = t; 1683 } 1684 1685 @Override 1686 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1687 mIsSwitchingState = false; 1688 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1689 updateChildrenLayersEnabled(false); 1690 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1691 // ensure that only the current page is visible during (and subsequently, after) the 1692 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1693 // visibility after the transition animation. 1694 if (!mWorkspaceFadeInAdjacentScreens) { 1695 for (int i = 0; i < getChildCount(); i++) { 1696 final CellLayout cl = (CellLayout) getChildAt(i); 1697 cl.setShortcutAndWidgetAlpha(1f); 1698 } 1699 } 1700 } 1701 1702 @Override 1703 public View getContent() { 1704 return this; 1705 } 1706 1707 /** 1708 * Draw the View v into the given Canvas. 1709 * 1710 * @param v the view to draw 1711 * @param destCanvas the canvas to draw on 1712 * @param padding the horizontal and vertical padding to use when drawing 1713 */ 1714 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1715 final Rect clipRect = mTempRect; 1716 v.getDrawingRect(clipRect); 1717 1718 boolean textVisible = false; 1719 1720 destCanvas.save(); 1721 if (v instanceof TextView && pruneToDrawable) { 1722 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1723 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1724 destCanvas.translate(padding / 2, padding / 2); 1725 d.draw(destCanvas); 1726 } else { 1727 if (v instanceof FolderIcon) { 1728 // For FolderIcons the text can bleed into the icon area, and so we need to 1729 // hide the text completely (which can't be achieved by clipping). 1730 if (((FolderIcon) v).getTextVisible()) { 1731 ((FolderIcon) v).setTextVisible(false); 1732 textVisible = true; 1733 } 1734 } else if (v instanceof BubbleTextView) { 1735 final BubbleTextView tv = (BubbleTextView) v; 1736 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1737 tv.getLayout().getLineTop(0); 1738 } else if (v instanceof TextView) { 1739 final TextView tv = (TextView) v; 1740 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1741 tv.getLayout().getLineTop(0); 1742 } 1743 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1744 destCanvas.clipRect(clipRect, Op.REPLACE); 1745 v.draw(destCanvas); 1746 1747 // Restore text visibility of FolderIcon if necessary 1748 if (textVisible) { 1749 ((FolderIcon) v).setTextVisible(true); 1750 } 1751 } 1752 destCanvas.restore(); 1753 } 1754 1755 /** 1756 * Returns a new bitmap to show when the given View is being dragged around. 1757 * Responsibility for the bitmap is transferred to the caller. 1758 */ 1759 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1760 Bitmap b; 1761 1762 if (v instanceof TextView) { 1763 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1764 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1765 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1766 } else { 1767 b = Bitmap.createBitmap( 1768 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1769 } 1770 1771 canvas.setBitmap(b); 1772 drawDragView(v, canvas, padding, true); 1773 canvas.setBitmap(null); 1774 1775 return b; 1776 } 1777 1778 /** 1779 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1780 * Responsibility for the bitmap is transferred to the caller. 1781 */ 1782 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1783 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1784 final Bitmap b = Bitmap.createBitmap( 1785 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1786 1787 canvas.setBitmap(b); 1788 drawDragView(v, canvas, padding, true); 1789 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1790 canvas.setBitmap(null); 1791 return b; 1792 } 1793 1794 /** 1795 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1796 * Responsibility for the bitmap is transferred to the caller. 1797 */ 1798 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1799 Paint alphaClipPaint) { 1800 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1801 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1802 canvas.setBitmap(b); 1803 1804 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1805 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1806 (h - padding) / (float) orig.getHeight()); 1807 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1808 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1809 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1810 1811 // center the image 1812 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1813 1814 canvas.drawBitmap(orig, src, dst, null); 1815 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1816 alphaClipPaint); 1817 canvas.setBitmap(null); 1818 1819 return b; 1820 } 1821 1822 void startDrag(CellLayout.CellInfo cellInfo) { 1823 View child = cellInfo.cell; 1824 1825 // Make sure the drag was started by a long press as opposed to a long click. 1826 if (!child.isInTouchMode()) { 1827 return; 1828 } 1829 1830 mDragInfo = cellInfo; 1831 child.setVisibility(INVISIBLE); 1832 CellLayout layout = (CellLayout) child.getParent().getParent(); 1833 layout.prepareChildForDrag(child); 1834 1835 child.clearFocus(); 1836 child.setPressed(false); 1837 1838 final Canvas canvas = new Canvas(); 1839 1840 // The outline is used to visualize where the item will land if dropped 1841 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1842 beginDragShared(child, this); 1843 } 1844 1845 public void beginDragShared(View child, DragSource source) { 1846 Resources r = getResources(); 1847 1848 // The drag bitmap follows the touch point around on the screen 1849 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1850 1851 final int bmpWidth = b.getWidth(); 1852 final int bmpHeight = b.getHeight(); 1853 1854 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1855 int dragLayerX = 1856 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1857 int dragLayerY = 1858 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1859 - DRAG_BITMAP_PADDING / 2); 1860 1861 Point dragVisualizeOffset = null; 1862 Rect dragRect = null; 1863 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1864 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1865 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1866 int top = child.getPaddingTop(); 1867 int left = (bmpWidth - iconSize) / 2; 1868 int right = left + iconSize; 1869 int bottom = top + iconSize; 1870 dragLayerY += top; 1871 // Note: The drag region is used to calculate drag layer offsets, but the 1872 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1873 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1874 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1875 dragRect = new Rect(left, top, right, bottom); 1876 } else if (child instanceof FolderIcon) { 1877 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1878 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1879 } 1880 1881 // Clear the pressed state if necessary 1882 if (child instanceof BubbleTextView) { 1883 BubbleTextView icon = (BubbleTextView) child; 1884 icon.clearPressedOrFocusedBackground(); 1885 } 1886 1887 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1888 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1889 b.recycle(); 1890 1891 // Show the scrolling indicator when you pick up an item 1892 showScrollingIndicator(false); 1893 } 1894 1895 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1896 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1897 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1898 1899 final int[] cellXY = new int[2]; 1900 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1901 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1902 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1903 cellXY[1]); 1904 } 1905 1906 public boolean transitionStateShouldAllowDrop() { 1907 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1908 } 1909 1910 /** 1911 * {@inheritDoc} 1912 */ 1913 public boolean acceptDrop(DragObject d) { 1914 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1915 CellLayout dropTargetLayout = mDropToLayout; 1916 if (d.dragSource != this) { 1917 // Don't accept the drop if we're not over a screen at time of drop 1918 if (dropTargetLayout == null) { 1919 return false; 1920 } 1921 if (!transitionStateShouldAllowDrop()) return false; 1922 1923 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1924 d.dragView, mDragViewVisualCenter); 1925 1926 // We want the point to be mapped to the dragTarget. 1927 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1928 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1929 } else { 1930 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1931 } 1932 1933 int spanX = 1; 1934 int spanY = 1; 1935 if (mDragInfo != null) { 1936 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1937 spanX = dragCellInfo.spanX; 1938 spanY = dragCellInfo.spanY; 1939 } else { 1940 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1941 spanX = dragInfo.spanX; 1942 spanY = dragInfo.spanY; 1943 } 1944 1945 int minSpanX = spanX; 1946 int minSpanY = spanY; 1947 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1948 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1949 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1950 } 1951 1952 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1953 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1954 mTargetCell); 1955 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 1956 mDragViewVisualCenter[1], mTargetCell); 1957 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1958 mTargetCell, distance, true)) { 1959 return true; 1960 } 1961 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1962 mTargetCell, distance)) { 1963 return true; 1964 } 1965 1966 int[] resultSpan = new int[2]; 1967 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 1968 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 1969 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 1970 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 1971 1972 // Don't accept the drop if there's no room for the item 1973 if (!foundCell) { 1974 // Don't show the message if we are dropping on the AllApps button and the hotseat 1975 // is full 1976 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 1977 if (mTargetCell != null && isHotseat) { 1978 Hotseat hotseat = mLauncher.getHotseat(); 1979 if (hotseat.isAllAppsButtonRank( 1980 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 1981 return false; 1982 } 1983 } 1984 1985 mLauncher.showOutOfSpaceMessage(isHotseat); 1986 return false; 1987 } 1988 } 1989 return true; 1990 } 1991 1992 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 1993 distance, boolean considerTimeout) { 1994 if (distance > mMaxDistanceForFolderCreation) return false; 1995 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1996 1997 if (dropOverView != null) { 1998 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 1999 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2000 return false; 2001 } 2002 } 2003 2004 boolean hasntMoved = false; 2005 if (mDragInfo != null) { 2006 hasntMoved = dropOverView == mDragInfo.cell; 2007 } 2008 2009 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2010 return false; 2011 } 2012 2013 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2014 boolean willBecomeShortcut = 2015 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2016 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2017 2018 return (aboveShortcut && willBecomeShortcut); 2019 } 2020 2021 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2022 float distance) { 2023 if (distance > mMaxDistanceForFolderCreation) return false; 2024 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2025 2026 if (dropOverView != null) { 2027 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2028 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2029 return false; 2030 } 2031 } 2032 2033 if (dropOverView instanceof FolderIcon) { 2034 FolderIcon fi = (FolderIcon) dropOverView; 2035 if (fi.acceptDrop(dragInfo)) { 2036 return true; 2037 } 2038 } 2039 return false; 2040 } 2041 2042 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2043 int[] targetCell, float distance, boolean external, DragView dragView, 2044 Runnable postAnimationRunnable) { 2045 if (distance > mMaxDistanceForFolderCreation) return false; 2046 View v = target.getChildAt(targetCell[0], targetCell[1]); 2047 2048 boolean hasntMoved = false; 2049 if (mDragInfo != null) { 2050 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2051 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2052 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2053 } 2054 2055 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2056 mCreateUserFolderOnDrop = false; 2057 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2058 2059 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2060 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2061 2062 if (aboveShortcut && willBecomeShortcut) { 2063 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2064 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2065 // if the drag started here, we need to remove it from the workspace 2066 if (!external) { 2067 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2068 } 2069 2070 Rect folderLocation = new Rect(); 2071 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2072 target.removeView(v); 2073 2074 FolderIcon fi = 2075 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2076 destInfo.cellX = -1; 2077 destInfo.cellY = -1; 2078 sourceInfo.cellX = -1; 2079 sourceInfo.cellY = -1; 2080 2081 // If the dragView is null, we can't animate 2082 boolean animate = dragView != null; 2083 if (animate) { 2084 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2085 postAnimationRunnable); 2086 } else { 2087 fi.addItem(destInfo); 2088 fi.addItem(sourceInfo); 2089 } 2090 return true; 2091 } 2092 return false; 2093 } 2094 2095 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2096 float distance, DragObject d, boolean external) { 2097 if (distance > mMaxDistanceForFolderCreation) return false; 2098 2099 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2100 if (!mAddToExistingFolderOnDrop) return false; 2101 mAddToExistingFolderOnDrop = false; 2102 2103 if (dropOverView instanceof FolderIcon) { 2104 FolderIcon fi = (FolderIcon) dropOverView; 2105 if (fi.acceptDrop(d.dragInfo)) { 2106 fi.onDrop(d); 2107 2108 // if the drag started here, we need to remove it from the workspace 2109 if (!external) { 2110 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2111 } 2112 return true; 2113 } 2114 } 2115 return false; 2116 } 2117 2118 public void onDrop(final DragObject d) { 2119 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2120 mDragViewVisualCenter); 2121 2122 CellLayout dropTargetLayout = mDropToLayout; 2123 2124 // We want the point to be mapped to the dragTarget. 2125 if (dropTargetLayout != null) { 2126 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2127 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2128 } else { 2129 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2130 } 2131 } 2132 2133 int snapScreen = -1; 2134 boolean resizeOnDrop = false; 2135 if (d.dragSource != this) { 2136 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2137 (int) mDragViewVisualCenter[1] }; 2138 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2139 } else if (mDragInfo != null) { 2140 final View cell = mDragInfo.cell; 2141 2142 Runnable resizeRunnable = null; 2143 if (dropTargetLayout != null) { 2144 // Move internally 2145 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2146 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2147 long container = hasMovedIntoHotseat ? 2148 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2149 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2150 int screen = (mTargetCell[0] < 0) ? 2151 mDragInfo.screen : indexOfChild(dropTargetLayout); 2152 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2153 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2154 // First we find the cell nearest to point at which the item is 2155 // dropped, without any consideration to whether there is an item there. 2156 2157 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2158 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2159 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2160 mDragViewVisualCenter[1], mTargetCell); 2161 2162 // If the item being dropped is a shortcut and the nearest drop 2163 // cell also contains a shortcut, then create a folder with the two shortcuts. 2164 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2165 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2166 return; 2167 } 2168 2169 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2170 distance, d, false)) { 2171 return; 2172 } 2173 2174 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2175 // we need to find the nearest cell location that is vacant 2176 ItemInfo item = (ItemInfo) d.dragInfo; 2177 int minSpanX = item.spanX; 2178 int minSpanY = item.spanY; 2179 if (item.minSpanX > 0 && item.minSpanY > 0) { 2180 minSpanX = item.minSpanX; 2181 minSpanY = item.minSpanY; 2182 } 2183 2184 int[] resultSpan = new int[2]; 2185 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2186 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2187 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2188 2189 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2190 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2191 resizeOnDrop = true; 2192 item.spanX = resultSpan[0]; 2193 item.spanY = resultSpan[1]; 2194 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2195 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2196 resultSpan[1]); 2197 } 2198 2199 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2200 snapScreen = screen; 2201 snapToPage(screen); 2202 } 2203 2204 if (foundCell) { 2205 final ItemInfo info = (ItemInfo) cell.getTag(); 2206 if (hasMovedLayouts) { 2207 // Reparent the view 2208 getParentCellLayoutForView(cell).removeView(cell); 2209 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2210 info.spanX, info.spanY); 2211 } 2212 2213 // update the item's position after drop 2214 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2215 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2216 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2217 lp.cellHSpan = item.spanX; 2218 lp.cellVSpan = item.spanY; 2219 lp.isLockedToGrid = true; 2220 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2221 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2222 2223 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2224 cell instanceof LauncherAppWidgetHostView) { 2225 final CellLayout cellLayout = dropTargetLayout; 2226 // We post this call so that the widget has a chance to be placed 2227 // in its final location 2228 2229 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2230 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2231 if (pinfo != null && 2232 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2233 final Runnable addResizeFrame = new Runnable() { 2234 public void run() { 2235 DragLayer dragLayer = mLauncher.getDragLayer(); 2236 dragLayer.addResizeFrame(info, hostView, cellLayout); 2237 } 2238 }; 2239 resizeRunnable = (new Runnable() { 2240 public void run() { 2241 if (!isPageMoving()) { 2242 addResizeFrame.run(); 2243 } else { 2244 mDelayedResizeRunnable = addResizeFrame; 2245 } 2246 } 2247 }); 2248 } 2249 } 2250 2251 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2252 lp.cellY); 2253 } else { 2254 // If we can't find a drop location, we return the item to its original position 2255 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2256 mTargetCell[0] = lp.cellX; 2257 mTargetCell[1] = lp.cellY; 2258 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2259 layout.markCellsAsOccupiedForView(cell); 2260 } 2261 } 2262 2263 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2264 final Runnable finalResizeRunnable = resizeRunnable; 2265 // Prepare it to be animated into its new position 2266 // This must be called after the view has been re-parented 2267 final Runnable onCompleteRunnable = new Runnable() { 2268 @Override 2269 public void run() { 2270 mAnimatingViewIntoPlace = false; 2271 updateChildrenLayersEnabled(false); 2272 if (finalResizeRunnable != null) { 2273 finalResizeRunnable.run(); 2274 } 2275 } 2276 }; 2277 mAnimatingViewIntoPlace = true; 2278 if (d.dragView.hasDrawn()) { 2279 final ItemInfo info = (ItemInfo) cell.getTag(); 2280 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2281 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2282 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2283 animateWidgetDrop(info, parent, d.dragView, 2284 onCompleteRunnable, animationType, cell, false); 2285 } else { 2286 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2287 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2288 onCompleteRunnable, this); 2289 } 2290 } else { 2291 d.deferDragViewCleanupPostAnimation = false; 2292 cell.setVisibility(VISIBLE); 2293 } 2294 parent.onDropChild(cell); 2295 } 2296 } 2297 2298 public void setFinalScrollForPageChange(int screen) { 2299 if (screen >= 0) { 2300 mSavedScrollX = getScrollX(); 2301 CellLayout cl = (CellLayout) getChildAt(screen); 2302 mSavedTranslationX = cl.getTranslationX(); 2303 mSavedRotationY = cl.getRotationY(); 2304 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2305 setScrollX(newX); 2306 cl.setTranslationX(0f); 2307 cl.setRotationY(0f); 2308 } 2309 } 2310 2311 public void resetFinalScrollForPageChange(int screen) { 2312 if (screen >= 0) { 2313 CellLayout cl = (CellLayout) getChildAt(screen); 2314 setScrollX(mSavedScrollX); 2315 cl.setTranslationX(mSavedTranslationX); 2316 cl.setRotationY(mSavedRotationY); 2317 } 2318 } 2319 2320 public void getViewLocationRelativeToSelf(View v, int[] location) { 2321 getLocationInWindow(location); 2322 int x = location[0]; 2323 int y = location[1]; 2324 2325 v.getLocationInWindow(location); 2326 int vX = location[0]; 2327 int vY = location[1]; 2328 2329 location[0] = vX - x; 2330 location[1] = vY - y; 2331 } 2332 2333 public void onDragEnter(DragObject d) { 2334 mDragEnforcer.onDragEnter(); 2335 mCreateUserFolderOnDrop = false; 2336 mAddToExistingFolderOnDrop = false; 2337 2338 mDropToLayout = null; 2339 CellLayout layout = getCurrentDropLayout(); 2340 setCurrentDropLayout(layout); 2341 setCurrentDragOverlappingLayout(layout); 2342 2343 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2344 // don't need to show the outlines 2345 if (LauncherApplication.isScreenLarge()) { 2346 showOutlines(); 2347 } 2348 } 2349 2350 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2351 Resources res = launcher.getResources(); 2352 Display display = launcher.getWindowManager().getDefaultDisplay(); 2353 Point smallestSize = new Point(); 2354 Point largestSize = new Point(); 2355 display.getCurrentSizeRange(smallestSize, largestSize); 2356 if (orientation == CellLayout.LANDSCAPE) { 2357 if (mLandscapeCellLayoutMetrics == null) { 2358 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2359 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2360 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2361 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2362 int width = largestSize.x - paddingLeft - paddingRight; 2363 int height = smallestSize.y - paddingTop - paddingBottom; 2364 mLandscapeCellLayoutMetrics = new Rect(); 2365 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2366 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2367 orientation); 2368 } 2369 return mLandscapeCellLayoutMetrics; 2370 } else if (orientation == CellLayout.PORTRAIT) { 2371 if (mPortraitCellLayoutMetrics == null) { 2372 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2373 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2374 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2375 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2376 int width = smallestSize.x - paddingLeft - paddingRight; 2377 int height = largestSize.y - paddingTop - paddingBottom; 2378 mPortraitCellLayoutMetrics = new Rect(); 2379 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2380 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2381 orientation); 2382 } 2383 return mPortraitCellLayoutMetrics; 2384 } 2385 return null; 2386 } 2387 2388 public void onDragExit(DragObject d) { 2389 mDragEnforcer.onDragExit(); 2390 2391 // Here we store the final page that will be dropped to, if the workspace in fact 2392 // receives the drop 2393 if (mInScrollArea) { 2394 if (isPageMoving()) { 2395 // If the user drops while the page is scrolling, we should use that page as the 2396 // destination instead of the page that is being hovered over. 2397 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2398 } else { 2399 mDropToLayout = mDragOverlappingLayout; 2400 } 2401 } else { 2402 mDropToLayout = mDragTargetLayout; 2403 } 2404 2405 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2406 mCreateUserFolderOnDrop = true; 2407 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2408 mAddToExistingFolderOnDrop = true; 2409 } 2410 2411 // Reset the scroll area and previous drag target 2412 onResetScrollArea(); 2413 setCurrentDropLayout(null); 2414 setCurrentDragOverlappingLayout(null); 2415 2416 mSpringLoadedDragController.cancel(); 2417 2418 if (!mIsPageMoving) { 2419 hideOutlines(); 2420 } 2421 } 2422 2423 void setCurrentDropLayout(CellLayout layout) { 2424 if (mDragTargetLayout != null) { 2425 mDragTargetLayout.revertTempState(); 2426 mDragTargetLayout.onDragExit(); 2427 } 2428 mDragTargetLayout = layout; 2429 if (mDragTargetLayout != null) { 2430 mDragTargetLayout.onDragEnter(); 2431 } 2432 cleanupReorder(true); 2433 cleanupFolderCreation(); 2434 setCurrentDropOverCell(-1, -1); 2435 } 2436 2437 void setCurrentDragOverlappingLayout(CellLayout layout) { 2438 if (mDragOverlappingLayout != null) { 2439 mDragOverlappingLayout.setIsDragOverlapping(false); 2440 } 2441 mDragOverlappingLayout = layout; 2442 if (mDragOverlappingLayout != null) { 2443 mDragOverlappingLayout.setIsDragOverlapping(true); 2444 } 2445 invalidate(); 2446 } 2447 2448 void setCurrentDropOverCell(int x, int y) { 2449 if (x != mDragOverX || y != mDragOverY) { 2450 mDragOverX = x; 2451 mDragOverY = y; 2452 setDragMode(DRAG_MODE_NONE); 2453 } 2454 } 2455 2456 void setDragMode(int dragMode) { 2457 if (dragMode != mDragMode) { 2458 if (dragMode == DRAG_MODE_NONE) { 2459 cleanupAddToFolder(); 2460 // We don't want to cancel the re-order alarm every time the target cell changes 2461 // as this feels to slow / unresponsive. 2462 cleanupReorder(false); 2463 cleanupFolderCreation(); 2464 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2465 cleanupReorder(true); 2466 cleanupFolderCreation(); 2467 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2468 cleanupAddToFolder(); 2469 cleanupReorder(true); 2470 } else if (dragMode == DRAG_MODE_REORDER) { 2471 cleanupAddToFolder(); 2472 cleanupFolderCreation(); 2473 } 2474 mDragMode = dragMode; 2475 } 2476 } 2477 2478 private void cleanupFolderCreation() { 2479 if (mDragFolderRingAnimator != null) { 2480 mDragFolderRingAnimator.animateToNaturalState(); 2481 } 2482 mFolderCreationAlarm.cancelAlarm(); 2483 } 2484 2485 private void cleanupAddToFolder() { 2486 if (mDragOverFolderIcon != null) { 2487 mDragOverFolderIcon.onDragExit(null); 2488 mDragOverFolderIcon = null; 2489 } 2490 } 2491 2492 private void cleanupReorder(boolean cancelAlarm) { 2493 // Any pending reorders are canceled 2494 if (cancelAlarm) { 2495 mReorderAlarm.cancelAlarm(); 2496 } 2497 mLastReorderX = -1; 2498 mLastReorderY = -1; 2499 } 2500 2501 public DropTarget getDropTargetDelegate(DragObject d) { 2502 return null; 2503 } 2504 2505 /* 2506 * 2507 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2508 * coordinate space. The argument xy is modified with the return result. 2509 * 2510 */ 2511 void mapPointFromSelfToChild(View v, float[] xy) { 2512 mapPointFromSelfToChild(v, xy, null); 2513 } 2514 2515 /* 2516 * 2517 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2518 * coordinate space. The argument xy is modified with the return result. 2519 * 2520 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2521 * computing it itself; we use this to avoid redundant matrix inversions in 2522 * findMatchingPageForDragOver 2523 * 2524 */ 2525 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2526 if (cachedInverseMatrix == null) { 2527 v.getMatrix().invert(mTempInverseMatrix); 2528 cachedInverseMatrix = mTempInverseMatrix; 2529 } 2530 int scrollX = getScrollX(); 2531 if (mNextPage != INVALID_PAGE) { 2532 scrollX = mScroller.getFinalX(); 2533 } 2534 xy[0] = xy[0] + scrollX - v.getLeft(); 2535 xy[1] = xy[1] + getScrollY() - v.getTop(); 2536 cachedInverseMatrix.mapPoints(xy); 2537 } 2538 2539 /* 2540 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2541 * covers the full screen) 2542 */ 2543 void mapPointFromSelfToSibling(View v, float[] xy) { 2544 xy[0] = xy[0] - v.getLeft(); 2545 xy[1] = xy[1] - v.getTop(); 2546 } 2547 2548 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2549 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2550 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2551 } 2552 2553 /* 2554 * 2555 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2556 * the parent View's coordinate space. The argument xy is modified with the return result. 2557 * 2558 */ 2559 void mapPointFromChildToSelf(View v, float[] xy) { 2560 v.getMatrix().mapPoints(xy); 2561 int scrollX = getScrollX(); 2562 if (mNextPage != INVALID_PAGE) { 2563 scrollX = mScroller.getFinalX(); 2564 } 2565 xy[0] -= (scrollX - v.getLeft()); 2566 xy[1] -= (getScrollY() - v.getTop()); 2567 } 2568 2569 static private float squaredDistance(float[] point1, float[] point2) { 2570 float distanceX = point1[0] - point2[0]; 2571 float distanceY = point2[1] - point2[1]; 2572 return distanceX * distanceX + distanceY * distanceY; 2573 } 2574 2575 /* 2576 * 2577 * Returns true if the passed CellLayout cl overlaps with dragView 2578 * 2579 */ 2580 boolean overlaps(CellLayout cl, DragView dragView, 2581 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2582 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2583 final float[] draggedItemTopLeft = mTempDragCoordinates; 2584 draggedItemTopLeft[0] = dragViewX; 2585 draggedItemTopLeft[1] = dragViewY; 2586 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2587 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2588 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2589 2590 // Transform the dragged item's top left coordinates 2591 // to the CellLayout's local coordinates 2592 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2593 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2594 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2595 2596 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2597 // Transform the dragged item's bottom right coordinates 2598 // to the CellLayout's local coordinates 2599 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2600 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2601 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2602 2603 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2604 float overlap = (overlapRegionRight - overlapRegionLeft) * 2605 (overlapRegionBottom - overlapRegionTop); 2606 if (overlap > 0) { 2607 return true; 2608 } 2609 } 2610 } 2611 return false; 2612 } 2613 2614 /* 2615 * 2616 * This method returns the CellLayout that is currently being dragged to. In order to drag 2617 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2618 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2619 * 2620 * Return null if no CellLayout is currently being dragged over 2621 * 2622 */ 2623 private CellLayout findMatchingPageForDragOver( 2624 DragView dragView, float originX, float originY, boolean exact) { 2625 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2626 // with the item being dragged and then choose the one that's closest to the touch point 2627 final int screenCount = getChildCount(); 2628 CellLayout bestMatchingScreen = null; 2629 float smallestDistSoFar = Float.MAX_VALUE; 2630 2631 for (int i = 0; i < screenCount; i++) { 2632 CellLayout cl = (CellLayout) getChildAt(i); 2633 2634 final float[] touchXy = {originX, originY}; 2635 // Transform the touch coordinates to the CellLayout's local coordinates 2636 // If the touch point is within the bounds of the cell layout, we can return immediately 2637 cl.getMatrix().invert(mTempInverseMatrix); 2638 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2639 2640 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2641 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2642 return cl; 2643 } 2644 2645 if (!exact) { 2646 // Get the center of the cell layout in screen coordinates 2647 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2648 cellLayoutCenter[0] = cl.getWidth()/2; 2649 cellLayoutCenter[1] = cl.getHeight()/2; 2650 mapPointFromChildToSelf(cl, cellLayoutCenter); 2651 2652 touchXy[0] = originX; 2653 touchXy[1] = originY; 2654 2655 // Calculate the distance between the center of the CellLayout 2656 // and the touch point 2657 float dist = squaredDistance(touchXy, cellLayoutCenter); 2658 2659 if (dist < smallestDistSoFar) { 2660 smallestDistSoFar = dist; 2661 bestMatchingScreen = cl; 2662 } 2663 } 2664 } 2665 return bestMatchingScreen; 2666 } 2667 2668 // This is used to compute the visual center of the dragView. This point is then 2669 // used to visualize drop locations and determine where to drop an item. The idea is that 2670 // the visual center represents the user's interpretation of where the item is, and hence 2671 // is the appropriate point to use when determining drop location. 2672 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2673 DragView dragView, float[] recycle) { 2674 float res[]; 2675 if (recycle == null) { 2676 res = new float[2]; 2677 } else { 2678 res = recycle; 2679 } 2680 2681 // First off, the drag view has been shifted in a way that is not represented in the 2682 // x and y values or the x/yOffsets. Here we account for that shift. 2683 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2684 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2685 2686 // These represent the visual top and left of drag view if a dragRect was provided. 2687 // If a dragRect was not provided, then they correspond to the actual view left and 2688 // top, as the dragRect is in that case taken to be the entire dragView. 2689 // R.dimen.dragViewOffsetY. 2690 int left = x - xOffset; 2691 int top = y - yOffset; 2692 2693 // In order to find the visual center, we shift by half the dragRect 2694 res[0] = left + dragView.getDragRegion().width() / 2; 2695 res[1] = top + dragView.getDragRegion().height() / 2; 2696 2697 return res; 2698 } 2699 2700 private boolean isDragWidget(DragObject d) { 2701 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2702 d.dragInfo instanceof PendingAddWidgetInfo); 2703 } 2704 private boolean isExternalDragWidget(DragObject d) { 2705 return d.dragSource != this && isDragWidget(d); 2706 } 2707 2708 public void onDragOver(DragObject d) { 2709 // Skip drag over events while we are dragging over side pages 2710 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2711 2712 Rect r = new Rect(); 2713 CellLayout layout = null; 2714 ItemInfo item = (ItemInfo) d.dragInfo; 2715 2716 // Ensure that we have proper spans for the item that we are dropping 2717 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2718 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2719 d.dragView, mDragViewVisualCenter); 2720 2721 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2722 // Identify whether we have dragged over a side page 2723 if (isSmall()) { 2724 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2725 mLauncher.getHotseat().getHitRect(r); 2726 if (r.contains(d.x, d.y)) { 2727 layout = mLauncher.getHotseat().getLayout(); 2728 } 2729 } 2730 if (layout == null) { 2731 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2732 } 2733 if (layout != mDragTargetLayout) { 2734 2735 setCurrentDropLayout(layout); 2736 setCurrentDragOverlappingLayout(layout); 2737 2738 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2739 if (isInSpringLoadedMode) { 2740 if (mLauncher.isHotseatLayout(layout)) { 2741 mSpringLoadedDragController.cancel(); 2742 } else { 2743 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2744 } 2745 } 2746 } 2747 } else { 2748 // Test to see if we are over the hotseat otherwise just use the current page 2749 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2750 mLauncher.getHotseat().getHitRect(r); 2751 if (r.contains(d.x, d.y)) { 2752 layout = mLauncher.getHotseat().getLayout(); 2753 } 2754 } 2755 if (layout == null) { 2756 layout = getCurrentDropLayout(); 2757 } 2758 if (layout != mDragTargetLayout) { 2759 setCurrentDropLayout(layout); 2760 setCurrentDragOverlappingLayout(layout); 2761 } 2762 } 2763 2764 // Handle the drag over 2765 if (mDragTargetLayout != null) { 2766 // We want the point to be mapped to the dragTarget. 2767 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2768 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2769 } else { 2770 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2771 } 2772 2773 ItemInfo info = (ItemInfo) d.dragInfo; 2774 2775 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2776 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2777 mDragTargetLayout, mTargetCell); 2778 2779 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2780 2781 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2782 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2783 2784 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2785 mTargetCell[1]); 2786 2787 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2788 targetCellDistance, dragOverView); 2789 2790 int minSpanX = item.spanX; 2791 int minSpanY = item.spanY; 2792 if (item.minSpanX > 0 && item.minSpanY > 0) { 2793 minSpanX = item.minSpanX; 2794 minSpanY = item.minSpanY; 2795 } 2796 2797 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2798 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2799 item.spanY, child, mTargetCell); 2800 2801 if (!nearestDropOccupied) { 2802 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2803 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2804 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2805 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2806 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2807 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2808 mLastReorderY != mTargetCell[1])) { 2809 2810 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2811 // reorder, then we schedule a reorder 2812 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2813 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2814 mReorderAlarm.setOnAlarmListener(listener); 2815 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2816 } 2817 2818 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2819 !nearestDropOccupied) { 2820 if (mDragTargetLayout != null) { 2821 mDragTargetLayout.revertTempState(); 2822 } 2823 } 2824 } 2825 } 2826 2827 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2828 int[] targetCell, float distance, View dragOverView) { 2829 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2830 false); 2831 2832 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2833 !mFolderCreationAlarm.alarmPending()) { 2834 mFolderCreationAlarm.setOnAlarmListener(new 2835 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2836 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2837 return; 2838 } 2839 2840 boolean willAddToFolder = 2841 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2842 2843 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2844 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2845 mDragOverFolderIcon.onDragEnter(info); 2846 if (targetLayout != null) { 2847 targetLayout.clearDragOutlines(); 2848 } 2849 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2850 return; 2851 } 2852 2853 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2854 setDragMode(DRAG_MODE_NONE); 2855 } 2856 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2857 setDragMode(DRAG_MODE_NONE); 2858 } 2859 2860 return; 2861 } 2862 2863 class FolderCreationAlarmListener implements OnAlarmListener { 2864 CellLayout layout; 2865 int cellX; 2866 int cellY; 2867 2868 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2869 this.layout = layout; 2870 this.cellX = cellX; 2871 this.cellY = cellY; 2872 } 2873 2874 public void onAlarm(Alarm alarm) { 2875 if (mDragFolderRingAnimator == null) { 2876 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2877 } 2878 mDragFolderRingAnimator.setCell(cellX, cellY); 2879 mDragFolderRingAnimator.setCellLayout(layout); 2880 mDragFolderRingAnimator.animateToAcceptState(); 2881 layout.showFolderAccept(mDragFolderRingAnimator); 2882 layout.clearDragOutlines(); 2883 setDragMode(DRAG_MODE_CREATE_FOLDER); 2884 } 2885 } 2886 2887 class ReorderAlarmListener implements OnAlarmListener { 2888 float[] dragViewCenter; 2889 int minSpanX, minSpanY, spanX, spanY; 2890 DragView dragView; 2891 View child; 2892 2893 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2894 int spanY, DragView dragView, View child) { 2895 this.dragViewCenter = dragViewCenter; 2896 this.minSpanX = minSpanX; 2897 this.minSpanY = minSpanY; 2898 this.spanX = spanX; 2899 this.spanY = spanY; 2900 this.child = child; 2901 this.dragView = dragView; 2902 } 2903 2904 public void onAlarm(Alarm alarm) { 2905 int[] resultSpan = new int[2]; 2906 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2907 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2908 mLastReorderX = mTargetCell[0]; 2909 mLastReorderY = mTargetCell[1]; 2910 2911 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2912 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2913 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2914 2915 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2916 mDragTargetLayout.revertTempState(); 2917 } else { 2918 setDragMode(DRAG_MODE_REORDER); 2919 } 2920 2921 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2922 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2923 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2924 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2925 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2926 } 2927 } 2928 2929 @Override 2930 public void getHitRect(Rect outRect) { 2931 // We want the workspace to have the whole area of the display (it will find the correct 2932 // cell layout to drop to in the existing drag/drop logic. 2933 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2934 } 2935 2936 /** 2937 * Add the item specified by dragInfo to the given layout. 2938 * @return true if successful 2939 */ 2940 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2941 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2942 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2943 return true; 2944 } 2945 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2946 return false; 2947 } 2948 2949 private void onDropExternal(int[] touchXY, Object dragInfo, 2950 CellLayout cellLayout, boolean insertAtFirst) { 2951 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2952 } 2953 2954 /** 2955 * Drop an item that didn't originate on one of the workspace screens. 2956 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2957 * come from another app altogether. 2958 * 2959 * NOTE: This can also be called when we are outside of a drag event, when we want 2960 * to add an item to one of the workspace screens. 2961 */ 2962 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2963 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2964 final Runnable exitSpringLoadedRunnable = new Runnable() { 2965 @Override 2966 public void run() { 2967 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2968 } 2969 }; 2970 2971 ItemInfo info = (ItemInfo) dragInfo; 2972 int spanX = info.spanX; 2973 int spanY = info.spanY; 2974 if (mDragInfo != null) { 2975 spanX = mDragInfo.spanX; 2976 spanY = mDragInfo.spanY; 2977 } 2978 2979 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2980 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2981 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2982 final int screen = indexOfChild(cellLayout); 2983 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2984 && mState != State.SPRING_LOADED) { 2985 snapToPage(screen); 2986 } 2987 2988 if (info instanceof PendingAddItemInfo) { 2989 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2990 2991 boolean findNearestVacantCell = true; 2992 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2993 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2994 cellLayout, mTargetCell); 2995 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2996 mDragViewVisualCenter[1], mTargetCell); 2997 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 2998 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2999 cellLayout, mTargetCell, distance)) { 3000 findNearestVacantCell = false; 3001 } 3002 } 3003 3004 final ItemInfo item = (ItemInfo) d.dragInfo; 3005 if (findNearestVacantCell) { 3006 int minSpanX = item.spanX; 3007 int minSpanY = item.spanY; 3008 if (item.minSpanX > 0 && item.minSpanY > 0) { 3009 minSpanX = item.minSpanX; 3010 minSpanY = item.minSpanY; 3011 } 3012 int[] resultSpan = new int[2]; 3013 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3014 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3015 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3016 item.spanX = resultSpan[0]; 3017 item.spanY = resultSpan[1]; 3018 } 3019 3020 Runnable onAnimationCompleteRunnable = new Runnable() { 3021 @Override 3022 public void run() { 3023 // When dragging and dropping from customization tray, we deal with creating 3024 // widgets/shortcuts/folders in a slightly different way 3025 switch (pendingInfo.itemType) { 3026 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3027 int span[] = new int[2]; 3028 span[0] = item.spanX; 3029 span[1] = item.spanY; 3030 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3031 container, screen, mTargetCell, span, null); 3032 break; 3033 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3034 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3035 container, screen, mTargetCell, null); 3036 break; 3037 default: 3038 throw new IllegalStateException("Unknown item type: " + 3039 pendingInfo.itemType); 3040 } 3041 } 3042 }; 3043 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3044 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3045 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3046 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3047 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3048 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3049 } 3050 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3051 animationStyle, finalView, true); 3052 } else { 3053 // This is for other drag/drop cases, like dragging from All Apps 3054 View view = null; 3055 3056 switch (info.itemType) { 3057 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3058 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3059 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3060 // Came from all apps -- make a copy 3061 info = new ShortcutInfo((ApplicationInfo) info); 3062 } 3063 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3064 (ShortcutInfo) info); 3065 break; 3066 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3067 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3068 (FolderInfo) info, mIconCache); 3069 break; 3070 default: 3071 throw new IllegalStateException("Unknown item type: " + info.itemType); 3072 } 3073 3074 // First we find the cell nearest to point at which the item is 3075 // dropped, without any consideration to whether there is an item there. 3076 if (touchXY != null) { 3077 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3078 cellLayout, mTargetCell); 3079 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3080 mDragViewVisualCenter[1], mTargetCell); 3081 d.postAnimationRunnable = exitSpringLoadedRunnable; 3082 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3083 true, d.dragView, d.postAnimationRunnable)) { 3084 return; 3085 } 3086 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3087 true)) { 3088 return; 3089 } 3090 } 3091 3092 if (touchXY != null) { 3093 // when dragging and dropping, just find the closest free spot 3094 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3095 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3096 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3097 } else { 3098 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3099 } 3100 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3101 info.spanY, insertAtFirst); 3102 cellLayout.onDropChild(view); 3103 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3104 cellLayout.getShortcutsAndWidgets().measureChild(view); 3105 3106 3107 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3108 lp.cellX, lp.cellY); 3109 3110 if (d.dragView != null) { 3111 // We wrap the animation call in the temporary set and reset of the current 3112 // cellLayout to its final transform -- this means we animate the drag view to 3113 // the correct final location. 3114 setFinalTransitionTransform(cellLayout); 3115 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3116 exitSpringLoadedRunnable); 3117 resetTransitionTransform(cellLayout); 3118 } 3119 } 3120 } 3121 3122 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3123 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3124 widgetInfo.spanY, widgetInfo, false); 3125 int visibility = layout.getVisibility(); 3126 layout.setVisibility(VISIBLE); 3127 3128 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3129 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3130 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3131 Bitmap.Config.ARGB_8888); 3132 Canvas c = new Canvas(b); 3133 3134 layout.measure(width, height); 3135 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3136 layout.draw(c); 3137 c.setBitmap(null); 3138 layout.setVisibility(visibility); 3139 return b; 3140 } 3141 3142 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3143 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3144 boolean external, boolean scale) { 3145 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3146 // location and size on the home screen. 3147 int spanX = info.spanX; 3148 int spanY = info.spanY; 3149 3150 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3151 loc[0] = r.left; 3152 loc[1] = r.top; 3153 3154 setFinalTransitionTransform(layout); 3155 float cellLayoutScale = 3156 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3157 resetTransitionTransform(layout); 3158 3159 float dragViewScaleX; 3160 float dragViewScaleY; 3161 if (scale) { 3162 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3163 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3164 } else { 3165 dragViewScaleX = 1f; 3166 dragViewScaleY = 1f; 3167 } 3168 3169 // The animation will scale the dragView about its center, so we need to center about 3170 // the final location. 3171 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3172 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3173 3174 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3175 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3176 } 3177 3178 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3179 final Runnable onCompleteRunnable, int animationType, final View finalView, 3180 boolean external) { 3181 Rect from = new Rect(); 3182 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3183 3184 int[] finalPos = new int[2]; 3185 float scaleXY[] = new float[2]; 3186 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3187 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3188 external, scalePreview); 3189 3190 Resources res = mLauncher.getResources(); 3191 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3192 3193 // In the case where we've prebound the widget, we remove it from the DragLayer 3194 if (finalView instanceof AppWidgetHostView && external) { 3195 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3196 mLauncher.getDragLayer().removeView(finalView); 3197 } 3198 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3199 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3200 dragView.setCrossFadeBitmap(crossFadeBitmap); 3201 dragView.crossFade((int) (duration * 0.8f)); 3202 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3203 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3204 } 3205 3206 DragLayer dragLayer = mLauncher.getDragLayer(); 3207 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3208 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3209 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3210 } else { 3211 int endStyle; 3212 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3213 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3214 } else { 3215 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3216 } 3217 3218 Runnable onComplete = new Runnable() { 3219 @Override 3220 public void run() { 3221 if (finalView != null) { 3222 finalView.setVisibility(VISIBLE); 3223 } 3224 if (onCompleteRunnable != null) { 3225 onCompleteRunnable.run(); 3226 } 3227 } 3228 }; 3229 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3230 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3231 duration, this); 3232 } 3233 } 3234 3235 public void setFinalTransitionTransform(CellLayout layout) { 3236 if (isSwitchingState()) { 3237 int index = indexOfChild(layout); 3238 mCurrentScaleX = layout.getScaleX(); 3239 mCurrentScaleY = layout.getScaleY(); 3240 mCurrentTranslationX = layout.getTranslationX(); 3241 mCurrentTranslationY = layout.getTranslationY(); 3242 mCurrentRotationY = layout.getRotationY(); 3243 layout.setScaleX(mNewScaleXs[index]); 3244 layout.setScaleY(mNewScaleYs[index]); 3245 layout.setTranslationX(mNewTranslationXs[index]); 3246 layout.setTranslationY(mNewTranslationYs[index]); 3247 layout.setRotationY(mNewRotationYs[index]); 3248 } 3249 } 3250 public void resetTransitionTransform(CellLayout layout) { 3251 if (isSwitchingState()) { 3252 mCurrentScaleX = layout.getScaleX(); 3253 mCurrentScaleY = layout.getScaleY(); 3254 mCurrentTranslationX = layout.getTranslationX(); 3255 mCurrentTranslationY = layout.getTranslationY(); 3256 mCurrentRotationY = layout.getRotationY(); 3257 layout.setScaleX(mCurrentScaleX); 3258 layout.setScaleY(mCurrentScaleY); 3259 layout.setTranslationX(mCurrentTranslationX); 3260 layout.setTranslationY(mCurrentTranslationY); 3261 layout.setRotationY(mCurrentRotationY); 3262 } 3263 } 3264 3265 /** 3266 * Return the current {@link CellLayout}, correctly picking the destination 3267 * screen while a scroll is in progress. 3268 */ 3269 public CellLayout getCurrentDropLayout() { 3270 return (CellLayout) getChildAt(getNextPage()); 3271 } 3272 3273 /** 3274 * Return the current CellInfo describing our current drag; this method exists 3275 * so that Launcher can sync this object with the correct info when the activity is created/ 3276 * destroyed 3277 * 3278 */ 3279 public CellLayout.CellInfo getDragInfo() { 3280 return mDragInfo; 3281 } 3282 3283 /** 3284 * Calculate the nearest cell where the given object would be dropped. 3285 * 3286 * pixelX and pixelY should be in the coordinate system of layout 3287 */ 3288 private int[] findNearestArea(int pixelX, int pixelY, 3289 int spanX, int spanY, CellLayout layout, int[] recycle) { 3290 return layout.findNearestArea( 3291 pixelX, pixelY, spanX, spanY, recycle); 3292 } 3293 3294 void setup(DragController dragController) { 3295 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3296 mDragController = dragController; 3297 3298 // hardware layers on children are enabled on startup, but should be disabled until 3299 // needed 3300 updateChildrenLayersEnabled(false); 3301 setWallpaperDimension(); 3302 } 3303 3304 /** 3305 * Called at the end of a drag which originated on the workspace. 3306 */ 3307 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3308 boolean success) { 3309 if (success) { 3310 if (target != this) { 3311 if (mDragInfo != null) { 3312 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3313 if (mDragInfo.cell instanceof DropTarget) { 3314 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3315 } 3316 } 3317 } 3318 } else if (mDragInfo != null) { 3319 CellLayout cellLayout; 3320 if (mLauncher.isHotseatLayout(target)) { 3321 cellLayout = mLauncher.getHotseat().getLayout(); 3322 } else { 3323 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3324 } 3325 cellLayout.onDropChild(mDragInfo.cell); 3326 } 3327 if (d.cancelled && mDragInfo.cell != null) { 3328 mDragInfo.cell.setVisibility(VISIBLE); 3329 } 3330 mDragOutline = null; 3331 mDragInfo = null; 3332 3333 // Hide the scrolling indicator after you pick up an item 3334 hideScrollingIndicator(false); 3335 } 3336 3337 void updateItemLocationsInDatabase(CellLayout cl) { 3338 int count = cl.getShortcutsAndWidgets().getChildCount(); 3339 3340 int screen = indexOfChild(cl); 3341 int container = Favorites.CONTAINER_DESKTOP; 3342 3343 if (mLauncher.isHotseatLayout(cl)) { 3344 screen = -1; 3345 container = Favorites.CONTAINER_HOTSEAT; 3346 } 3347 3348 for (int i = 0; i < count; i++) { 3349 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3350 ItemInfo info = (ItemInfo) v.getTag(); 3351 // Null check required as the AllApps button doesn't have an item info 3352 if (info != null) { 3353 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3354 info.cellY, info.spanX, info.spanY); 3355 } 3356 } 3357 } 3358 3359 @Override 3360 public boolean supportsFlingToDelete() { 3361 return true; 3362 } 3363 3364 @Override 3365 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3366 // Do nothing 3367 } 3368 3369 @Override 3370 public void onFlingToDeleteCompleted() { 3371 // Do nothing 3372 } 3373 3374 public boolean isDropEnabled() { 3375 return true; 3376 } 3377 3378 @Override 3379 protected void onRestoreInstanceState(Parcelable state) { 3380 super.onRestoreInstanceState(state); 3381 Launcher.setScreen(mCurrentPage); 3382 } 3383 3384 @Override 3385 public void scrollLeft() { 3386 if (!isSmall() && !mIsSwitchingState) { 3387 super.scrollLeft(); 3388 } 3389 Folder openFolder = getOpenFolder(); 3390 if (openFolder != null) { 3391 openFolder.completeDragExit(); 3392 } 3393 } 3394 3395 @Override 3396 public void scrollRight() { 3397 if (!isSmall() && !mIsSwitchingState) { 3398 super.scrollRight(); 3399 } 3400 Folder openFolder = getOpenFolder(); 3401 if (openFolder != null) { 3402 openFolder.completeDragExit(); 3403 } 3404 } 3405 3406 @Override 3407 public boolean onEnterScrollArea(int x, int y, int direction) { 3408 // Ignore the scroll area if we are dragging over the hot seat 3409 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3410 if (mLauncher.getHotseat() != null && isPortrait) { 3411 Rect r = new Rect(); 3412 mLauncher.getHotseat().getHitRect(r); 3413 if (r.contains(x, y)) { 3414 return false; 3415 } 3416 } 3417 3418 boolean result = false; 3419 if (!isSmall() && !mIsSwitchingState) { 3420 mInScrollArea = true; 3421 3422 final int page = getNextPage() + 3423 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3424 3425 // We always want to exit the current layout to ensure parity of enter / exit 3426 setCurrentDropLayout(null); 3427 3428 if (0 <= page && page < getChildCount()) { 3429 CellLayout layout = (CellLayout) getChildAt(page); 3430 setCurrentDragOverlappingLayout(layout); 3431 3432 // Workspace is responsible for drawing the edge glow on adjacent pages, 3433 // so we need to redraw the workspace when this may have changed. 3434 invalidate(); 3435 result = true; 3436 } 3437 } 3438 return result; 3439 } 3440 3441 @Override 3442 public boolean onExitScrollArea() { 3443 boolean result = false; 3444 if (mInScrollArea) { 3445 invalidate(); 3446 CellLayout layout = getCurrentDropLayout(); 3447 setCurrentDropLayout(layout); 3448 setCurrentDragOverlappingLayout(layout); 3449 3450 result = true; 3451 mInScrollArea = false; 3452 } 3453 return result; 3454 } 3455 3456 private void onResetScrollArea() { 3457 setCurrentDragOverlappingLayout(null); 3458 mInScrollArea = false; 3459 } 3460 3461 /** 3462 * Returns a specific CellLayout 3463 */ 3464 CellLayout getParentCellLayoutForView(View v) { 3465 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3466 for (CellLayout layout : layouts) { 3467 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3468 return layout; 3469 } 3470 } 3471 return null; 3472 } 3473 3474 /** 3475 * Returns a list of all the CellLayouts in the workspace. 3476 */ 3477 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3478 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3479 int screenCount = getChildCount(); 3480 for (int screen = 0; screen < screenCount; screen++) { 3481 layouts.add(((CellLayout) getChildAt(screen))); 3482 } 3483 if (mLauncher.getHotseat() != null) { 3484 layouts.add(mLauncher.getHotseat().getLayout()); 3485 } 3486 return layouts; 3487 } 3488 3489 /** 3490 * We should only use this to search for specific children. Do not use this method to modify 3491 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3492 * the hotseat and workspace pages 3493 */ 3494 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3495 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3496 new ArrayList<ShortcutAndWidgetContainer>(); 3497 int screenCount = getChildCount(); 3498 for (int screen = 0; screen < screenCount; screen++) { 3499 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3500 } 3501 if (mLauncher.getHotseat() != null) { 3502 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3503 } 3504 return childrenLayouts; 3505 } 3506 3507 public Folder getFolderForTag(Object tag) { 3508 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3509 getAllShortcutAndWidgetContainers(); 3510 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3511 int count = layout.getChildCount(); 3512 for (int i = 0; i < count; i++) { 3513 View child = layout.getChildAt(i); 3514 if (child instanceof Folder) { 3515 Folder f = (Folder) child; 3516 if (f.getInfo() == tag && f.getInfo().opened) { 3517 return f; 3518 } 3519 } 3520 } 3521 } 3522 return null; 3523 } 3524 3525 public View getViewForTag(Object tag) { 3526 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3527 getAllShortcutAndWidgetContainers(); 3528 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3529 int count = layout.getChildCount(); 3530 for (int i = 0; i < count; i++) { 3531 View child = layout.getChildAt(i); 3532 if (child.getTag() == tag) { 3533 return child; 3534 } 3535 } 3536 } 3537 return null; 3538 } 3539 3540 void clearDropTargets() { 3541 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3542 getAllShortcutAndWidgetContainers(); 3543 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3544 int childCount = layout.getChildCount(); 3545 for (int j = 0; j < childCount; j++) { 3546 View v = layout.getChildAt(j); 3547 if (v instanceof DropTarget) { 3548 mDragController.removeDropTarget((DropTarget) v); 3549 } 3550 } 3551 } 3552 } 3553 3554 void removeItems(final ArrayList<ApplicationInfo> apps) { 3555 final HashSet<String> packageNames = new HashSet<String>(); 3556 final int appCount = apps.size(); 3557 for (int i = 0; i < appCount; i++) { 3558 packageNames.add(apps.get(i).componentName.getPackageName()); 3559 } 3560 3561 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3562 for (final CellLayout layoutParent: cellLayouts) { 3563 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3564 3565 // Avoid ANRs by treating each screen separately 3566 post(new Runnable() { 3567 public void run() { 3568 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3569 childrenToRemove.clear(); 3570 3571 int childCount = layout.getChildCount(); 3572 for (int j = 0; j < childCount; j++) { 3573 final View view = layout.getChildAt(j); 3574 Object tag = view.getTag(); 3575 3576 if (tag instanceof ShortcutInfo) { 3577 final ShortcutInfo info = (ShortcutInfo) tag; 3578 final Intent intent = info.intent; 3579 final ComponentName name = intent.getComponent(); 3580 3581 if (name != null) { 3582 if (packageNames.contains(name.getPackageName())) { 3583 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3584 childrenToRemove.add(view); 3585 } 3586 } 3587 } else if (tag instanceof FolderInfo) { 3588 final FolderInfo info = (FolderInfo) tag; 3589 final ArrayList<ShortcutInfo> contents = info.contents; 3590 final int contentsCount = contents.size(); 3591 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3592 new ArrayList<ShortcutInfo>(); 3593 3594 for (int k = 0; k < contentsCount; k++) { 3595 final ShortcutInfo appInfo = contents.get(k); 3596 final Intent intent = appInfo.intent; 3597 final ComponentName name = intent.getComponent(); 3598 3599 if (name != null) { 3600 if (packageNames.contains(name.getPackageName())) { 3601 appsToRemoveFromFolder.add(appInfo); 3602 } 3603 } 3604 } 3605 for (ShortcutInfo item: appsToRemoveFromFolder) { 3606 info.remove(item); 3607 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3608 } 3609 } else if (tag instanceof LauncherAppWidgetInfo) { 3610 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3611 final ComponentName provider = info.providerName; 3612 if (provider != null) { 3613 if (packageNames.contains(provider.getPackageName())) { 3614 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3615 childrenToRemove.add(view); 3616 } 3617 } 3618 } 3619 } 3620 3621 childCount = childrenToRemove.size(); 3622 for (int j = 0; j < childCount; j++) { 3623 View child = childrenToRemove.get(j); 3624 // Note: We can not remove the view directly from CellLayoutChildren as this 3625 // does not re-mark the spaces as unoccupied. 3626 layoutParent.removeViewInLayout(child); 3627 if (child instanceof DropTarget) { 3628 mDragController.removeDropTarget((DropTarget)child); 3629 } 3630 } 3631 3632 if (childCount > 0) { 3633 layout.requestLayout(); 3634 layout.invalidate(); 3635 } 3636 } 3637 }); 3638 } 3639 3640 // It is no longer the case the BubbleTextViews correspond 1:1 with the workspace items in 3641 // the database (and LauncherModel) since shortcuts are not added and animated in until 3642 // the user returns to launcher. As a result, we really should be cleaning up the Db 3643 // regardless of whether the item was added or not (unlike the logic above). This is only 3644 // relevant for direct workspace items. 3645 post(new Runnable() { 3646 @Override 3647 public void run() { 3648 String spKey = LauncherApplication.getSharedPreferencesKey(); 3649 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3650 Context.MODE_PRIVATE); 3651 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3652 null); 3653 3654 for (String packageName: packageNames) { 3655 // Remove all items that have the same package, but were not removed above 3656 ArrayList<ShortcutInfo> infos = 3657 mLauncher.getModel().getShortcutInfosForPackage(packageName); 3658 for (ShortcutInfo info : infos) { 3659 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3660 } 3661 // Remove all queued items that match the same package 3662 if (newApps != null) { 3663 synchronized (newApps) { 3664 for (String intentStr : newApps) { 3665 try { 3666 Intent intent = Intent.parseUri(intentStr, 0); 3667 String pn = ItemInfo.getPackageName(intent); 3668 if (packageNames.contains(pn)) { 3669 newApps.remove(intentStr); 3670 } 3671 } catch (URISyntaxException e) {} 3672 } 3673 } 3674 } 3675 } 3676 } 3677 }); 3678 } 3679 3680 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3681 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3682 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3683 int childCount = layout.getChildCount(); 3684 for (int j = 0; j < childCount; j++) { 3685 final View view = layout.getChildAt(j); 3686 Object tag = view.getTag(); 3687 if (tag instanceof ShortcutInfo) { 3688 ShortcutInfo info = (ShortcutInfo) tag; 3689 // We need to check for ACTION_MAIN otherwise getComponent() might 3690 // return null for some shortcuts (for instance, for shortcuts to 3691 // web pages.) 3692 final Intent intent = info.intent; 3693 final ComponentName name = intent.getComponent(); 3694 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3695 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3696 final int appCount = apps.size(); 3697 for (int k = 0; k < appCount; k++) { 3698 ApplicationInfo app = apps.get(k); 3699 if (app.componentName.equals(name)) { 3700 BubbleTextView shortcut = (BubbleTextView) view; 3701 info.updateIcon(mIconCache); 3702 info.title = app.title.toString(); 3703 shortcut.applyFromShortcutInfo(info, mIconCache); 3704 } 3705 } 3706 } 3707 } 3708 } 3709 } 3710 } 3711 3712 void moveToDefaultScreen(boolean animate) { 3713 if (!isSmall()) { 3714 if (animate) { 3715 snapToPage(mDefaultPage); 3716 } else { 3717 setCurrentPage(mDefaultPage); 3718 } 3719 } 3720 getChildAt(mDefaultPage).requestFocus(); 3721 } 3722 3723 @Override 3724 public void syncPages() { 3725 } 3726 3727 @Override 3728 public void syncPageItems(int page, boolean immediate) { 3729 } 3730 3731 @Override 3732 protected String getCurrentPageDescription() { 3733 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3734 return String.format(getContext().getString(R.string.workspace_scroll_format), 3735 page + 1, getChildCount()); 3736 } 3737 3738 public void getLocationInDragLayer(int[] loc) { 3739 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3740 } 3741 3742 void setFadeForOverScroll(float fade) { 3743 if (!isScrollingIndicatorEnabled()) return; 3744 3745 mOverscrollFade = fade; 3746 float reducedFade = 0.5f + 0.5f * (1 - fade); 3747 final ViewGroup parent = (ViewGroup) getParent(); 3748 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3749 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3750 final View scrollIndicator = getScrollingIndicator(); 3751 3752 cancelScrollingIndicatorAnimations(); 3753 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3754 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3755 scrollIndicator.setAlpha(1 - fade); 3756 } 3757} 3758