Workspace.java revision 9470783614c733830ad2402c7630c5b3fdfb2a58
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 Point minDims = new Point(); 833 Point maxDims = new Point(); 834 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 835 836 final int maxDim = Math.max(maxDims.x, maxDims.y); 837 final int minDim = Math.min(minDims.x, minDims.y); 838 839 // We need to ensure that there is enough extra space in the wallpaper for the intended 840 // parallax effects 841 if (LauncherApplication.isScreenLarge()) { 842 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 843 mWallpaperHeight = maxDim; 844 } else { 845 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 846 mWallpaperHeight = maxDim; 847 } 848 new Thread("setWallpaperDimension") { 849 public void run() { 850 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 851 } 852 }.start(); 853 } 854 855 private float wallpaperOffsetForCurrentScroll() { 856 // Set wallpaper offset steps (1 / (number of screens - 1)) 857 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 858 859 // For the purposes of computing the scrollRange and overScrollOffset, we assume 860 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 861 // there's no discrepancy between the wallpaper offset for a given page. 862 float layoutScale = mLayoutScale; 863 mLayoutScale = 1f; 864 int scrollRange = getScrollRange(); 865 866 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 867 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 868 adjustedScrollX *= mWallpaperScrollRatio; 869 mLayoutScale = layoutScale; 870 871 float scrollProgress = 872 adjustedScrollX / (float) scrollRange; 873 874 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 875 // The wallpaper travel width is how far, from left to right, the wallpaper will move 876 // at this orientation. On tablets in portrait mode we don't move all the way to the 877 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 878 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 879 880 float offsetInDips = wallpaperTravelWidth * scrollProgress + 881 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 882 float offset = offsetInDips / (float) mWallpaperWidth; 883 return offset; 884 } else { 885 return scrollProgress; 886 } 887 } 888 889 private void syncWallpaperOffsetWithScroll() { 890 final boolean enableWallpaperEffects = isHardwareAccelerated(); 891 if (enableWallpaperEffects) { 892 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 893 } 894 } 895 896 public void updateWallpaperOffsetImmediately() { 897 mUpdateWallpaperOffsetImmediately = true; 898 } 899 900 private void updateWallpaperOffsets() { 901 boolean updateNow = false; 902 boolean keepUpdating = true; 903 if (mUpdateWallpaperOffsetImmediately) { 904 updateNow = true; 905 keepUpdating = false; 906 mWallpaperOffset.jumpToFinal(); 907 mUpdateWallpaperOffsetImmediately = false; 908 } else { 909 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 910 } 911 if (updateNow) { 912 if (mWindowToken != null) { 913 mWallpaperManager.setWallpaperOffsets(mWindowToken, 914 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 915 } 916 } 917 if (keepUpdating) { 918 invalidate(); 919 } 920 } 921 922 @Override 923 protected void updateCurrentPageScroll() { 924 super.updateCurrentPageScroll(); 925 computeWallpaperScrollRatio(mCurrentPage); 926 } 927 928 @Override 929 protected void snapToPage(int whichPage) { 930 super.snapToPage(whichPage); 931 computeWallpaperScrollRatio(whichPage); 932 } 933 934 @Override 935 protected void snapToPage(int whichPage, int duration) { 936 super.snapToPage(whichPage, duration); 937 computeWallpaperScrollRatio(whichPage); 938 } 939 940 protected void snapToPage(int whichPage, Runnable r) { 941 if (mDelayedSnapToPageRunnable != null) { 942 mDelayedSnapToPageRunnable.run(); 943 } 944 mDelayedSnapToPageRunnable = r; 945 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 946 } 947 948 private void computeWallpaperScrollRatio(int page) { 949 // Here, we determine what the desired scroll would be with and without a layout scale, 950 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 951 // as though there is no layout scale. 952 float layoutScale = mLayoutScale; 953 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 954 mLayoutScale = 1.0f; 955 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 956 mLayoutScale = layoutScale; 957 if (scaled > 0) { 958 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 959 } else { 960 mWallpaperScrollRatio = 1f; 961 } 962 } 963 964 class WallpaperOffsetInterpolator { 965 float mFinalHorizontalWallpaperOffset = 0.0f; 966 float mFinalVerticalWallpaperOffset = 0.5f; 967 float mHorizontalWallpaperOffset = 0.0f; 968 float mVerticalWallpaperOffset = 0.5f; 969 long mLastWallpaperOffsetUpdateTime; 970 boolean mIsMovingFast; 971 boolean mOverrideHorizontalCatchupConstant; 972 float mHorizontalCatchupConstant = 0.35f; 973 float mVerticalCatchupConstant = 0.35f; 974 975 public WallpaperOffsetInterpolator() { 976 } 977 978 public void setOverrideHorizontalCatchupConstant(boolean override) { 979 mOverrideHorizontalCatchupConstant = override; 980 } 981 982 public void setHorizontalCatchupConstant(float f) { 983 mHorizontalCatchupConstant = f; 984 } 985 986 public void setVerticalCatchupConstant(float f) { 987 mVerticalCatchupConstant = f; 988 } 989 990 public boolean computeScrollOffset() { 991 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 992 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 993 mIsMovingFast = false; 994 return false; 995 } 996 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 997 998 long currentTime = System.currentTimeMillis(); 999 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 1000 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1001 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1002 1003 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1004 if (!mIsMovingFast && xdiff > 0.07) { 1005 mIsMovingFast = true; 1006 } 1007 1008 float fractionToCatchUpIn1MsHorizontal; 1009 if (mOverrideHorizontalCatchupConstant) { 1010 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1011 } else if (mIsMovingFast) { 1012 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1013 } else { 1014 // slow 1015 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1016 } 1017 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1018 1019 fractionToCatchUpIn1MsHorizontal /= 33f; 1020 fractionToCatchUpIn1MsVertical /= 33f; 1021 1022 final float UPDATE_THRESHOLD = 0.00001f; 1023 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1024 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1025 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1026 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1027 1028 // Don't have any lag between workspace and wallpaper on non-large devices 1029 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1030 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1031 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1032 } else { 1033 float percentToCatchUpVertical = 1034 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1035 float percentToCatchUpHorizontal = 1036 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1037 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1038 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1039 } 1040 1041 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1042 return true; 1043 } 1044 1045 public float getCurrX() { 1046 return mHorizontalWallpaperOffset; 1047 } 1048 1049 public float getFinalX() { 1050 return mFinalHorizontalWallpaperOffset; 1051 } 1052 1053 public float getCurrY() { 1054 return mVerticalWallpaperOffset; 1055 } 1056 1057 public float getFinalY() { 1058 return mFinalVerticalWallpaperOffset; 1059 } 1060 1061 public void setFinalX(float x) { 1062 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1063 } 1064 1065 public void setFinalY(float y) { 1066 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1067 } 1068 1069 public void jumpToFinal() { 1070 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1071 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1072 } 1073 } 1074 1075 @Override 1076 public void computeScroll() { 1077 super.computeScroll(); 1078 syncWallpaperOffsetWithScroll(); 1079 } 1080 1081 void showOutlines() { 1082 if (!isSmall() && !mIsSwitchingState) { 1083 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1084 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1085 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1086 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1087 mChildrenOutlineFadeInAnimation.start(); 1088 } 1089 } 1090 1091 void hideOutlines() { 1092 if (!isSmall() && !mIsSwitchingState) { 1093 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1094 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1095 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1096 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1097 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1098 mChildrenOutlineFadeOutAnimation.start(); 1099 } 1100 } 1101 1102 public void showOutlinesTemporarily() { 1103 if (!mIsPageMoving && !isTouchActive()) { 1104 snapToPage(mCurrentPage); 1105 } 1106 } 1107 1108 public void setChildrenOutlineAlpha(float alpha) { 1109 mChildrenOutlineAlpha = alpha; 1110 for (int i = 0; i < getChildCount(); i++) { 1111 CellLayout cl = (CellLayout) getChildAt(i); 1112 cl.setBackgroundAlpha(alpha); 1113 } 1114 } 1115 1116 public float getChildrenOutlineAlpha() { 1117 return mChildrenOutlineAlpha; 1118 } 1119 1120 void disableBackground() { 1121 mDrawBackground = false; 1122 } 1123 void enableBackground() { 1124 mDrawBackground = true; 1125 } 1126 1127 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1128 if (mBackground == null) return; 1129 if (mBackgroundFadeInAnimation != null) { 1130 mBackgroundFadeInAnimation.cancel(); 1131 mBackgroundFadeInAnimation = null; 1132 } 1133 if (mBackgroundFadeOutAnimation != null) { 1134 mBackgroundFadeOutAnimation.cancel(); 1135 mBackgroundFadeOutAnimation = null; 1136 } 1137 float startAlpha = getBackgroundAlpha(); 1138 if (finalAlpha != startAlpha) { 1139 if (animated) { 1140 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1141 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1142 public void onAnimationUpdate(ValueAnimator animation) { 1143 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1144 } 1145 }); 1146 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1147 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1148 mBackgroundFadeOutAnimation.start(); 1149 } else { 1150 setBackgroundAlpha(finalAlpha); 1151 } 1152 } 1153 } 1154 1155 public void setBackgroundAlpha(float alpha) { 1156 if (alpha != mBackgroundAlpha) { 1157 mBackgroundAlpha = alpha; 1158 invalidate(); 1159 } 1160 } 1161 1162 public float getBackgroundAlpha() { 1163 return mBackgroundAlpha; 1164 } 1165 1166 float backgroundAlphaInterpolator(float r) { 1167 float pivotA = 0.1f; 1168 float pivotB = 0.4f; 1169 if (r < pivotA) { 1170 return 0; 1171 } else if (r > pivotB) { 1172 return 1.0f; 1173 } else { 1174 return (r - pivotA)/(pivotB - pivotA); 1175 } 1176 } 1177 1178 float overScrollBackgroundAlphaInterpolator(float r) { 1179 float threshold = 0.08f; 1180 1181 if (r > mOverScrollMaxBackgroundAlpha) { 1182 mOverScrollMaxBackgroundAlpha = r; 1183 } else if (r < mOverScrollMaxBackgroundAlpha) { 1184 r = mOverScrollMaxBackgroundAlpha; 1185 } 1186 1187 return Math.min(r / threshold, 1.0f); 1188 } 1189 1190 private void updatePageAlphaValues(int screenCenter) { 1191 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1192 if (mWorkspaceFadeInAdjacentScreens && 1193 mState == State.NORMAL && 1194 !mIsSwitchingState && 1195 !isInOverscroll) { 1196 for (int i = 0; i < getChildCount(); i++) { 1197 CellLayout child = (CellLayout) getChildAt(i); 1198 if (child != null) { 1199 float scrollProgress = getScrollProgress(screenCenter, child, i); 1200 float alpha = 1 - Math.abs(scrollProgress); 1201 child.getShortcutsAndWidgets().setAlpha(alpha); 1202 if (!mIsDragOccuring) { 1203 child.setBackgroundAlphaMultiplier( 1204 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1205 } else { 1206 child.setBackgroundAlphaMultiplier(1f); 1207 } 1208 } 1209 } 1210 } 1211 } 1212 1213 private void setChildrenBackgroundAlphaMultipliers(float a) { 1214 for (int i = 0; i < getChildCount(); i++) { 1215 CellLayout child = (CellLayout) getChildAt(i); 1216 child.setBackgroundAlphaMultiplier(a); 1217 } 1218 } 1219 1220 @Override 1221 protected void screenScrolled(int screenCenter) { 1222 super.screenScrolled(screenCenter); 1223 1224 updatePageAlphaValues(screenCenter); 1225 1226 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1227 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1228 CellLayout cl = (CellLayout) getChildAt(index); 1229 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1230 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1231 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1232 cl.setRotationY(rotation); 1233 setFadeForOverScroll(Math.abs(scrollProgress)); 1234 if (!mOverscrollTransformsSet) { 1235 mOverscrollTransformsSet = true; 1236 cl.setCameraDistance(mDensity * mCameraDistance); 1237 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1238 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1239 cl.setOverscrollTransformsDirty(true); 1240 } 1241 } else { 1242 if (mOverscrollFade != 0) { 1243 setFadeForOverScroll(0); 1244 } 1245 if (mOverscrollTransformsSet) { 1246 mOverscrollTransformsSet = false; 1247 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1248 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1249 } 1250 } 1251 } 1252 1253 @Override 1254 protected void overScroll(float amount) { 1255 acceleratedOverScroll(amount); 1256 } 1257 1258 protected void onAttachedToWindow() { 1259 super.onAttachedToWindow(); 1260 mWindowToken = getWindowToken(); 1261 computeScroll(); 1262 mDragController.setWindowToken(mWindowToken); 1263 } 1264 1265 protected void onDetachedFromWindow() { 1266 mWindowToken = null; 1267 } 1268 1269 @Override 1270 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1271 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1272 mUpdateWallpaperOffsetImmediately = true; 1273 } 1274 super.onLayout(changed, left, top, right, bottom); 1275 } 1276 1277 @Override 1278 protected void onDraw(Canvas canvas) { 1279 updateWallpaperOffsets(); 1280 1281 // Draw the background gradient if necessary 1282 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1283 int alpha = (int) (mBackgroundAlpha * 255); 1284 mBackground.setAlpha(alpha); 1285 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1286 getMeasuredHeight()); 1287 mBackground.draw(canvas); 1288 } 1289 1290 super.onDraw(canvas); 1291 } 1292 1293 boolean isDrawingBackgroundGradient() { 1294 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1295 } 1296 1297 @Override 1298 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1299 if (!mLauncher.isAllAppsVisible()) { 1300 final Folder openFolder = getOpenFolder(); 1301 if (openFolder != null) { 1302 return openFolder.requestFocus(direction, previouslyFocusedRect); 1303 } else { 1304 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1305 } 1306 } 1307 return false; 1308 } 1309 1310 @Override 1311 public int getDescendantFocusability() { 1312 if (isSmall()) { 1313 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1314 } 1315 return super.getDescendantFocusability(); 1316 } 1317 1318 @Override 1319 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1320 if (!mLauncher.isAllAppsVisible()) { 1321 final Folder openFolder = getOpenFolder(); 1322 if (openFolder != null) { 1323 openFolder.addFocusables(views, direction); 1324 } else { 1325 super.addFocusables(views, direction, focusableMode); 1326 } 1327 } 1328 } 1329 1330 public boolean isSmall() { 1331 return mState == State.SMALL || mState == State.SPRING_LOADED; 1332 } 1333 1334 void enableChildrenCache(int fromPage, int toPage) { 1335 if (fromPage > toPage) { 1336 final int temp = fromPage; 1337 fromPage = toPage; 1338 toPage = temp; 1339 } 1340 1341 final int screenCount = getChildCount(); 1342 1343 fromPage = Math.max(fromPage, 0); 1344 toPage = Math.min(toPage, screenCount - 1); 1345 1346 for (int i = fromPage; i <= toPage; i++) { 1347 final CellLayout layout = (CellLayout) getChildAt(i); 1348 layout.setChildrenDrawnWithCacheEnabled(true); 1349 layout.setChildrenDrawingCacheEnabled(true); 1350 } 1351 } 1352 1353 void clearChildrenCache() { 1354 final int screenCount = getChildCount(); 1355 for (int i = 0; i < screenCount; i++) { 1356 final CellLayout layout = (CellLayout) getChildAt(i); 1357 layout.setChildrenDrawnWithCacheEnabled(false); 1358 // In software mode, we don't want the items to continue to be drawn into bitmaps 1359 if (!isHardwareAccelerated()) { 1360 layout.setChildrenDrawingCacheEnabled(false); 1361 } 1362 } 1363 } 1364 1365 1366 private void updateChildrenLayersEnabled(boolean force) { 1367 boolean small = mState == State.SMALL || mIsSwitchingState; 1368 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1369 1370 if (enableChildrenLayers != mChildrenLayersEnabled) { 1371 mChildrenLayersEnabled = enableChildrenLayers; 1372 for (int i = 0; i < getPageCount(); i++) { 1373 CellLayout cl = (CellLayout) getChildAt(i); 1374 cl.getShortcutsAndWidgets().setLayerType( 1375 mChildrenLayersEnabled ? LAYER_TYPE_HARDWARE : LAYER_TYPE_NONE, null); 1376 } 1377 } 1378 } 1379 1380 public void buildPageHardwareLayers() { 1381 // force layers to be enabled just for the call to buildLayer 1382 updateChildrenLayersEnabled(true); 1383 if (getWindowToken() != null) { 1384 final int childCount = getChildCount(); 1385 for (int i = 0; i < childCount; i++) { 1386 CellLayout cl = (CellLayout) getChildAt(i); 1387 cl.getShortcutsAndWidgets().buildLayer(); 1388 } 1389 } 1390 updateChildrenLayersEnabled(false); 1391 } 1392 1393 protected void onWallpaperTap(MotionEvent ev) { 1394 final int[] position = mTempCell; 1395 getLocationOnScreen(position); 1396 1397 int pointerIndex = ev.getActionIndex(); 1398 position[0] += (int) ev.getX(pointerIndex); 1399 position[1] += (int) ev.getY(pointerIndex); 1400 1401 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1402 ev.getAction() == MotionEvent.ACTION_UP 1403 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1404 position[0], position[1], 0, null); 1405 } 1406 1407 /* 1408 * This interpolator emulates the rate at which the perceived scale of an object changes 1409 * as its distance from a camera increases. When this interpolator is applied to a scale 1410 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1411 * from the camera. 1412 */ 1413 static class ZInterpolator implements TimeInterpolator { 1414 private float focalLength; 1415 1416 public ZInterpolator(float foc) { 1417 focalLength = foc; 1418 } 1419 1420 public float getInterpolation(float input) { 1421 return (1.0f - focalLength / (focalLength + input)) / 1422 (1.0f - focalLength / (focalLength + 1.0f)); 1423 } 1424 } 1425 1426 /* 1427 * The exact reverse of ZInterpolator. 1428 */ 1429 static class InverseZInterpolator implements TimeInterpolator { 1430 private ZInterpolator zInterpolator; 1431 public InverseZInterpolator(float foc) { 1432 zInterpolator = new ZInterpolator(foc); 1433 } 1434 public float getInterpolation(float input) { 1435 return 1 - zInterpolator.getInterpolation(1 - input); 1436 } 1437 } 1438 1439 /* 1440 * ZInterpolator compounded with an ease-out. 1441 */ 1442 static class ZoomOutInterpolator implements TimeInterpolator { 1443 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1444 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1445 1446 public float getInterpolation(float input) { 1447 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1448 } 1449 } 1450 1451 /* 1452 * InvereZInterpolator compounded with an ease-out. 1453 */ 1454 static class ZoomInInterpolator implements TimeInterpolator { 1455 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1456 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1457 1458 public float getInterpolation(float input) { 1459 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1460 } 1461 } 1462 1463 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1464 1465 /* 1466 * 1467 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1468 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1469 * 1470 * These methods mark the appropriate pages as accepting drops (which alters their visual 1471 * appearance). 1472 * 1473 */ 1474 public void onDragStartedWithItem(View v) { 1475 final Canvas canvas = new Canvas(); 1476 1477 // The outline is used to visualize where the item will land if dropped 1478 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1479 } 1480 1481 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1482 final Canvas canvas = new Canvas(); 1483 1484 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1485 1486 // The outline is used to visualize where the item will land if dropped 1487 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1488 size[1], alphaClipPaint); 1489 } 1490 1491 public void exitWidgetResizeMode() { 1492 DragLayer dragLayer = mLauncher.getDragLayer(); 1493 dragLayer.clearAllResizeFrames(); 1494 } 1495 1496 private void initAnimationArrays() { 1497 final int childCount = getChildCount(); 1498 if (mOldTranslationXs != null) return; 1499 mOldTranslationXs = new float[childCount]; 1500 mOldTranslationYs = new float[childCount]; 1501 mOldScaleXs = new float[childCount]; 1502 mOldScaleYs = new float[childCount]; 1503 mOldBackgroundAlphas = new float[childCount]; 1504 mOldAlphas = new float[childCount]; 1505 mNewTranslationXs = new float[childCount]; 1506 mNewTranslationYs = new float[childCount]; 1507 mNewScaleXs = new float[childCount]; 1508 mNewScaleYs = new float[childCount]; 1509 mNewBackgroundAlphas = new float[childCount]; 1510 mNewAlphas = new float[childCount]; 1511 mNewRotationYs = new float[childCount]; 1512 } 1513 1514 Animator getChangeStateAnimation(final State state, boolean animated) { 1515 return getChangeStateAnimation(state, animated, 0); 1516 } 1517 1518 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1519 if (mState == state) { 1520 return null; 1521 } 1522 1523 // Initialize animation arrays for the first time if necessary 1524 initAnimationArrays(); 1525 1526 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1527 1528 // Stop any scrolling, move to the current page right away 1529 setCurrentPage(getNextPage()); 1530 1531 final State oldState = mState; 1532 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1533 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1534 final boolean oldStateIsSmall = (oldState == State.SMALL); 1535 mState = state; 1536 final boolean stateIsNormal = (state == State.NORMAL); 1537 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1538 final boolean stateIsSmall = (state == State.SMALL); 1539 float finalScaleFactor = 1.0f; 1540 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1541 float translationX = 0; 1542 float translationY = 0; 1543 boolean zoomIn = true; 1544 1545 if (state != State.NORMAL) { 1546 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1547 setPageSpacing(mSpringLoadedPageSpacing); 1548 if (oldStateIsNormal && stateIsSmall) { 1549 zoomIn = false; 1550 setLayoutScale(finalScaleFactor); 1551 updateChildrenLayersEnabled(false); 1552 } else { 1553 finalBackgroundAlpha = 1.0f; 1554 setLayoutScale(finalScaleFactor); 1555 } 1556 } else { 1557 setPageSpacing(PagedView.AUTOMATIC_PAGE_SPACING); 1558 setLayoutScale(1.0f); 1559 } 1560 1561 final int duration = zoomIn ? 1562 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1563 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1564 for (int i = 0; i < getChildCount(); i++) { 1565 final CellLayout cl = (CellLayout) getChildAt(i); 1566 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1567 (i == mCurrentPage)) ? 1f : 0f; 1568 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1569 float initialAlpha = currentAlpha; 1570 1571 // Determine the pages alpha during the state transition 1572 if ((oldStateIsSmall && stateIsNormal) || 1573 (oldStateIsNormal && stateIsSmall)) { 1574 // To/from workspace - only show the current page unless the transition is not 1575 // animated and the animation end callback below doesn't run; 1576 // or, if we're in spring-loaded mode 1577 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1578 finalAlpha = 1f; 1579 } else { 1580 initialAlpha = 0f; 1581 finalAlpha = 0f; 1582 } 1583 } 1584 1585 mOldAlphas[i] = initialAlpha; 1586 mNewAlphas[i] = finalAlpha; 1587 if (animated) { 1588 mOldTranslationXs[i] = cl.getTranslationX(); 1589 mOldTranslationYs[i] = cl.getTranslationY(); 1590 mOldScaleXs[i] = cl.getScaleX(); 1591 mOldScaleYs[i] = cl.getScaleY(); 1592 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1593 1594 mNewTranslationXs[i] = translationX; 1595 mNewTranslationYs[i] = translationY; 1596 mNewScaleXs[i] = finalScaleFactor; 1597 mNewScaleYs[i] = finalScaleFactor; 1598 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1599 } else { 1600 cl.setTranslationX(translationX); 1601 cl.setTranslationY(translationY); 1602 cl.setScaleX(finalScaleFactor); 1603 cl.setScaleY(finalScaleFactor); 1604 cl.setBackgroundAlpha(finalBackgroundAlpha); 1605 cl.setShortcutAndWidgetAlpha(finalAlpha); 1606 } 1607 } 1608 1609 if (animated) { 1610 for (int index = 0; index < getChildCount(); index++) { 1611 final int i = index; 1612 final CellLayout cl = (CellLayout) getChildAt(i); 1613 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1614 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1615 cl.setTranslationX(mNewTranslationXs[i]); 1616 cl.setTranslationY(mNewTranslationYs[i]); 1617 cl.setScaleX(mNewScaleXs[i]); 1618 cl.setScaleY(mNewScaleYs[i]); 1619 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1620 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1621 cl.setRotationY(mNewRotationYs[i]); 1622 } else { 1623 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1624 a.translationX(mNewTranslationXs[i]) 1625 .translationY(mNewTranslationYs[i]) 1626 .scaleX(mNewScaleXs[i]) 1627 .scaleY(mNewScaleYs[i]) 1628 .setDuration(duration) 1629 .setInterpolator(mZoomInInterpolator); 1630 anim.play(a); 1631 1632 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1633 LauncherViewPropertyAnimator alphaAnim = 1634 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1635 alphaAnim.alpha(mNewAlphas[i]) 1636 .setDuration(duration) 1637 .setInterpolator(mZoomInInterpolator); 1638 anim.play(alphaAnim); 1639 } 1640 if (mOldBackgroundAlphas[i] != 0 || 1641 mNewBackgroundAlphas[i] != 0) { 1642 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1643 bgAnim.setInterpolator(mZoomInInterpolator); 1644 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1645 public void onAnimationUpdate(float a, float b) { 1646 cl.setBackgroundAlpha( 1647 a * mOldBackgroundAlphas[i] + 1648 b * mNewBackgroundAlphas[i]); 1649 } 1650 }); 1651 anim.play(bgAnim); 1652 } 1653 } 1654 } 1655 buildPageHardwareLayers(); 1656 anim.setStartDelay(delay); 1657 } 1658 1659 if (stateIsSpringLoaded) { 1660 // Right now we're covered by Apps Customize 1661 // Show the background gradient immediately, so the gradient will 1662 // be showing once AppsCustomize disappears 1663 animateBackgroundGradient(getResources().getInteger( 1664 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1665 } else { 1666 // Fade the background gradient away 1667 animateBackgroundGradient(0f, true); 1668 } 1669 return anim; 1670 } 1671 1672 @Override 1673 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1674 mIsSwitchingState = true; 1675 cancelScrollingIndicatorAnimations(); 1676 } 1677 1678 @Override 1679 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1680 } 1681 1682 @Override 1683 public void onLauncherTransitionStep(Launcher l, float t) { 1684 mTransitionProgress = t; 1685 } 1686 1687 @Override 1688 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1689 mIsSwitchingState = false; 1690 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1691 updateChildrenLayersEnabled(false); 1692 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1693 // ensure that only the current page is visible during (and subsequently, after) the 1694 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1695 // visibility after the transition animation. 1696 if (!mWorkspaceFadeInAdjacentScreens) { 1697 for (int i = 0; i < getChildCount(); i++) { 1698 final CellLayout cl = (CellLayout) getChildAt(i); 1699 cl.setShortcutAndWidgetAlpha(1f); 1700 } 1701 } 1702 } 1703 1704 @Override 1705 public View getContent() { 1706 return this; 1707 } 1708 1709 /** 1710 * Draw the View v into the given Canvas. 1711 * 1712 * @param v the view to draw 1713 * @param destCanvas the canvas to draw on 1714 * @param padding the horizontal and vertical padding to use when drawing 1715 */ 1716 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1717 final Rect clipRect = mTempRect; 1718 v.getDrawingRect(clipRect); 1719 1720 boolean textVisible = false; 1721 1722 destCanvas.save(); 1723 if (v instanceof TextView && pruneToDrawable) { 1724 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1725 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1726 destCanvas.translate(padding / 2, padding / 2); 1727 d.draw(destCanvas); 1728 } else { 1729 if (v instanceof FolderIcon) { 1730 // For FolderIcons the text can bleed into the icon area, and so we need to 1731 // hide the text completely (which can't be achieved by clipping). 1732 if (((FolderIcon) v).getTextVisible()) { 1733 ((FolderIcon) v).setTextVisible(false); 1734 textVisible = true; 1735 } 1736 } else if (v instanceof BubbleTextView) { 1737 final BubbleTextView tv = (BubbleTextView) v; 1738 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1739 tv.getLayout().getLineTop(0); 1740 } else if (v instanceof TextView) { 1741 final TextView tv = (TextView) v; 1742 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1743 tv.getLayout().getLineTop(0); 1744 } 1745 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1746 destCanvas.clipRect(clipRect, Op.REPLACE); 1747 v.draw(destCanvas); 1748 1749 // Restore text visibility of FolderIcon if necessary 1750 if (textVisible) { 1751 ((FolderIcon) v).setTextVisible(true); 1752 } 1753 } 1754 destCanvas.restore(); 1755 } 1756 1757 /** 1758 * Returns a new bitmap to show when the given View is being dragged around. 1759 * Responsibility for the bitmap is transferred to the caller. 1760 */ 1761 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1762 Bitmap b; 1763 1764 if (v instanceof TextView) { 1765 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1766 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1767 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1768 } else { 1769 b = Bitmap.createBitmap( 1770 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1771 } 1772 1773 canvas.setBitmap(b); 1774 drawDragView(v, canvas, padding, true); 1775 canvas.setBitmap(null); 1776 1777 return b; 1778 } 1779 1780 /** 1781 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1782 * Responsibility for the bitmap is transferred to the caller. 1783 */ 1784 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1785 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1786 final Bitmap b = Bitmap.createBitmap( 1787 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1788 1789 canvas.setBitmap(b); 1790 drawDragView(v, canvas, padding, true); 1791 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1792 canvas.setBitmap(null); 1793 return b; 1794 } 1795 1796 /** 1797 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1798 * Responsibility for the bitmap is transferred to the caller. 1799 */ 1800 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1801 Paint alphaClipPaint) { 1802 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1803 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1804 canvas.setBitmap(b); 1805 1806 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1807 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1808 (h - padding) / (float) orig.getHeight()); 1809 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1810 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1811 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1812 1813 // center the image 1814 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1815 1816 canvas.drawBitmap(orig, src, dst, null); 1817 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1818 alphaClipPaint); 1819 canvas.setBitmap(null); 1820 1821 return b; 1822 } 1823 1824 void startDrag(CellLayout.CellInfo cellInfo) { 1825 View child = cellInfo.cell; 1826 1827 // Make sure the drag was started by a long press as opposed to a long click. 1828 if (!child.isInTouchMode()) { 1829 return; 1830 } 1831 1832 mDragInfo = cellInfo; 1833 child.setVisibility(INVISIBLE); 1834 CellLayout layout = (CellLayout) child.getParent().getParent(); 1835 layout.prepareChildForDrag(child); 1836 1837 child.clearFocus(); 1838 child.setPressed(false); 1839 1840 final Canvas canvas = new Canvas(); 1841 1842 // The outline is used to visualize where the item will land if dropped 1843 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1844 beginDragShared(child, this); 1845 } 1846 1847 public void beginDragShared(View child, DragSource source) { 1848 Resources r = getResources(); 1849 1850 // The drag bitmap follows the touch point around on the screen 1851 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1852 1853 final int bmpWidth = b.getWidth(); 1854 final int bmpHeight = b.getHeight(); 1855 1856 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1857 int dragLayerX = 1858 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1859 int dragLayerY = 1860 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1861 - DRAG_BITMAP_PADDING / 2); 1862 1863 Point dragVisualizeOffset = null; 1864 Rect dragRect = null; 1865 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1866 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1867 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1868 int top = child.getPaddingTop(); 1869 int left = (bmpWidth - iconSize) / 2; 1870 int right = left + iconSize; 1871 int bottom = top + iconSize; 1872 dragLayerY += top; 1873 // Note: The drag region is used to calculate drag layer offsets, but the 1874 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1875 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1876 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1877 dragRect = new Rect(left, top, right, bottom); 1878 } else if (child instanceof FolderIcon) { 1879 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1880 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1881 } 1882 1883 // Clear the pressed state if necessary 1884 if (child instanceof BubbleTextView) { 1885 BubbleTextView icon = (BubbleTextView) child; 1886 icon.clearPressedOrFocusedBackground(); 1887 } 1888 1889 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1890 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1891 b.recycle(); 1892 1893 // Show the scrolling indicator when you pick up an item 1894 showScrollingIndicator(false); 1895 } 1896 1897 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1898 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1899 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1900 1901 final int[] cellXY = new int[2]; 1902 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1903 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1904 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1905 cellXY[1]); 1906 } 1907 1908 public boolean transitionStateShouldAllowDrop() { 1909 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1910 } 1911 1912 /** 1913 * {@inheritDoc} 1914 */ 1915 public boolean acceptDrop(DragObject d) { 1916 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1917 CellLayout dropTargetLayout = mDropToLayout; 1918 if (d.dragSource != this) { 1919 // Don't accept the drop if we're not over a screen at time of drop 1920 if (dropTargetLayout == null) { 1921 return false; 1922 } 1923 if (!transitionStateShouldAllowDrop()) return false; 1924 1925 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1926 d.dragView, mDragViewVisualCenter); 1927 1928 // We want the point to be mapped to the dragTarget. 1929 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1930 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1931 } else { 1932 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1933 } 1934 1935 int spanX = 1; 1936 int spanY = 1; 1937 if (mDragInfo != null) { 1938 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1939 spanX = dragCellInfo.spanX; 1940 spanY = dragCellInfo.spanY; 1941 } else { 1942 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1943 spanX = dragInfo.spanX; 1944 spanY = dragInfo.spanY; 1945 } 1946 1947 int minSpanX = spanX; 1948 int minSpanY = spanY; 1949 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1950 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1951 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1952 } 1953 1954 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1955 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1956 mTargetCell); 1957 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 1958 mDragViewVisualCenter[1], mTargetCell); 1959 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1960 mTargetCell, distance, true)) { 1961 return true; 1962 } 1963 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1964 mTargetCell, distance)) { 1965 return true; 1966 } 1967 1968 int[] resultSpan = new int[2]; 1969 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 1970 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 1971 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 1972 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 1973 1974 // Don't accept the drop if there's no room for the item 1975 if (!foundCell) { 1976 // Don't show the message if we are dropping on the AllApps button and the hotseat 1977 // is full 1978 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 1979 if (mTargetCell != null && isHotseat) { 1980 Hotseat hotseat = mLauncher.getHotseat(); 1981 if (hotseat.isAllAppsButtonRank( 1982 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 1983 return false; 1984 } 1985 } 1986 1987 mLauncher.showOutOfSpaceMessage(isHotseat); 1988 return false; 1989 } 1990 } 1991 return true; 1992 } 1993 1994 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 1995 distance, boolean considerTimeout) { 1996 if (distance > mMaxDistanceForFolderCreation) return false; 1997 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1998 1999 if (dropOverView != null) { 2000 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2001 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2002 return false; 2003 } 2004 } 2005 2006 boolean hasntMoved = false; 2007 if (mDragInfo != null) { 2008 hasntMoved = dropOverView == mDragInfo.cell; 2009 } 2010 2011 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2012 return false; 2013 } 2014 2015 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2016 boolean willBecomeShortcut = 2017 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2018 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2019 2020 return (aboveShortcut && willBecomeShortcut); 2021 } 2022 2023 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2024 float distance) { 2025 if (distance > mMaxDistanceForFolderCreation) return false; 2026 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2027 2028 if (dropOverView != null) { 2029 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2030 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2031 return false; 2032 } 2033 } 2034 2035 if (dropOverView instanceof FolderIcon) { 2036 FolderIcon fi = (FolderIcon) dropOverView; 2037 if (fi.acceptDrop(dragInfo)) { 2038 return true; 2039 } 2040 } 2041 return false; 2042 } 2043 2044 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2045 int[] targetCell, float distance, boolean external, DragView dragView, 2046 Runnable postAnimationRunnable) { 2047 if (distance > mMaxDistanceForFolderCreation) return false; 2048 View v = target.getChildAt(targetCell[0], targetCell[1]); 2049 2050 boolean hasntMoved = false; 2051 if (mDragInfo != null) { 2052 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2053 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2054 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2055 } 2056 2057 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2058 mCreateUserFolderOnDrop = false; 2059 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2060 2061 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2062 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2063 2064 if (aboveShortcut && willBecomeShortcut) { 2065 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2066 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2067 // if the drag started here, we need to remove it from the workspace 2068 if (!external) { 2069 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2070 } 2071 2072 Rect folderLocation = new Rect(); 2073 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2074 target.removeView(v); 2075 2076 FolderIcon fi = 2077 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2078 destInfo.cellX = -1; 2079 destInfo.cellY = -1; 2080 sourceInfo.cellX = -1; 2081 sourceInfo.cellY = -1; 2082 2083 // If the dragView is null, we can't animate 2084 boolean animate = dragView != null; 2085 if (animate) { 2086 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2087 postAnimationRunnable); 2088 } else { 2089 fi.addItem(destInfo); 2090 fi.addItem(sourceInfo); 2091 } 2092 return true; 2093 } 2094 return false; 2095 } 2096 2097 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2098 float distance, DragObject d, boolean external) { 2099 if (distance > mMaxDistanceForFolderCreation) return false; 2100 2101 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2102 if (!mAddToExistingFolderOnDrop) return false; 2103 mAddToExistingFolderOnDrop = false; 2104 2105 if (dropOverView instanceof FolderIcon) { 2106 FolderIcon fi = (FolderIcon) dropOverView; 2107 if (fi.acceptDrop(d.dragInfo)) { 2108 fi.onDrop(d); 2109 2110 // if the drag started here, we need to remove it from the workspace 2111 if (!external) { 2112 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2113 } 2114 return true; 2115 } 2116 } 2117 return false; 2118 } 2119 2120 public void onDrop(final DragObject d) { 2121 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2122 mDragViewVisualCenter); 2123 2124 CellLayout dropTargetLayout = mDropToLayout; 2125 2126 // We want the point to be mapped to the dragTarget. 2127 if (dropTargetLayout != null) { 2128 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2129 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2130 } else { 2131 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2132 } 2133 } 2134 2135 int snapScreen = -1; 2136 boolean resizeOnDrop = false; 2137 if (d.dragSource != this) { 2138 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2139 (int) mDragViewVisualCenter[1] }; 2140 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2141 } else if (mDragInfo != null) { 2142 final View cell = mDragInfo.cell; 2143 2144 Runnable resizeRunnable = null; 2145 if (dropTargetLayout != null) { 2146 // Move internally 2147 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2148 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2149 long container = hasMovedIntoHotseat ? 2150 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2151 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2152 int screen = (mTargetCell[0] < 0) ? 2153 mDragInfo.screen : indexOfChild(dropTargetLayout); 2154 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2155 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2156 // First we find the cell nearest to point at which the item is 2157 // dropped, without any consideration to whether there is an item there. 2158 2159 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2160 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2161 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2162 mDragViewVisualCenter[1], mTargetCell); 2163 2164 // If the item being dropped is a shortcut and the nearest drop 2165 // cell also contains a shortcut, then create a folder with the two shortcuts. 2166 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2167 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2168 return; 2169 } 2170 2171 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2172 distance, d, false)) { 2173 return; 2174 } 2175 2176 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2177 // we need to find the nearest cell location that is vacant 2178 ItemInfo item = (ItemInfo) d.dragInfo; 2179 int minSpanX = item.spanX; 2180 int minSpanY = item.spanY; 2181 if (item.minSpanX > 0 && item.minSpanY > 0) { 2182 minSpanX = item.minSpanX; 2183 minSpanY = item.minSpanY; 2184 } 2185 2186 int[] resultSpan = new int[2]; 2187 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2188 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2189 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2190 2191 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2192 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2193 resizeOnDrop = true; 2194 item.spanX = resultSpan[0]; 2195 item.spanY = resultSpan[1]; 2196 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2197 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2198 resultSpan[1]); 2199 } 2200 2201 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2202 snapScreen = screen; 2203 snapToPage(screen); 2204 } 2205 2206 if (foundCell) { 2207 final ItemInfo info = (ItemInfo) cell.getTag(); 2208 if (hasMovedLayouts) { 2209 // Reparent the view 2210 getParentCellLayoutForView(cell).removeView(cell); 2211 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2212 info.spanX, info.spanY); 2213 } 2214 2215 // update the item's position after drop 2216 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2217 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2218 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2219 lp.cellHSpan = item.spanX; 2220 lp.cellVSpan = item.spanY; 2221 lp.isLockedToGrid = true; 2222 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2223 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2224 2225 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2226 cell instanceof LauncherAppWidgetHostView) { 2227 final CellLayout cellLayout = dropTargetLayout; 2228 // We post this call so that the widget has a chance to be placed 2229 // in its final location 2230 2231 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2232 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2233 if (pinfo != null && 2234 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2235 final Runnable addResizeFrame = new Runnable() { 2236 public void run() { 2237 DragLayer dragLayer = mLauncher.getDragLayer(); 2238 dragLayer.addResizeFrame(info, hostView, cellLayout); 2239 } 2240 }; 2241 resizeRunnable = (new Runnable() { 2242 public void run() { 2243 if (!isPageMoving()) { 2244 addResizeFrame.run(); 2245 } else { 2246 mDelayedResizeRunnable = addResizeFrame; 2247 } 2248 } 2249 }); 2250 } 2251 } 2252 2253 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2254 lp.cellY); 2255 } else { 2256 // If we can't find a drop location, we return the item to its original position 2257 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2258 mTargetCell[0] = lp.cellX; 2259 mTargetCell[1] = lp.cellY; 2260 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2261 layout.markCellsAsOccupiedForView(cell); 2262 } 2263 } 2264 2265 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2266 final Runnable finalResizeRunnable = resizeRunnable; 2267 // Prepare it to be animated into its new position 2268 // This must be called after the view has been re-parented 2269 final Runnable onCompleteRunnable = new Runnable() { 2270 @Override 2271 public void run() { 2272 mAnimatingViewIntoPlace = false; 2273 updateChildrenLayersEnabled(false); 2274 if (finalResizeRunnable != null) { 2275 finalResizeRunnable.run(); 2276 } 2277 } 2278 }; 2279 mAnimatingViewIntoPlace = true; 2280 if (d.dragView.hasDrawn()) { 2281 final ItemInfo info = (ItemInfo) cell.getTag(); 2282 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2283 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2284 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2285 animateWidgetDrop(info, parent, d.dragView, 2286 onCompleteRunnable, animationType, cell, false); 2287 } else { 2288 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2289 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2290 onCompleteRunnable, this); 2291 } 2292 } else { 2293 d.deferDragViewCleanupPostAnimation = false; 2294 cell.setVisibility(VISIBLE); 2295 } 2296 parent.onDropChild(cell); 2297 } 2298 } 2299 2300 public void setFinalScrollForPageChange(int screen) { 2301 if (screen >= 0) { 2302 mSavedScrollX = getScrollX(); 2303 CellLayout cl = (CellLayout) getChildAt(screen); 2304 mSavedTranslationX = cl.getTranslationX(); 2305 mSavedRotationY = cl.getRotationY(); 2306 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2307 setScrollX(newX); 2308 cl.setTranslationX(0f); 2309 cl.setRotationY(0f); 2310 } 2311 } 2312 2313 public void resetFinalScrollForPageChange(int screen) { 2314 if (screen >= 0) { 2315 CellLayout cl = (CellLayout) getChildAt(screen); 2316 setScrollX(mSavedScrollX); 2317 cl.setTranslationX(mSavedTranslationX); 2318 cl.setRotationY(mSavedRotationY); 2319 } 2320 } 2321 2322 public void getViewLocationRelativeToSelf(View v, int[] location) { 2323 getLocationInWindow(location); 2324 int x = location[0]; 2325 int y = location[1]; 2326 2327 v.getLocationInWindow(location); 2328 int vX = location[0]; 2329 int vY = location[1]; 2330 2331 location[0] = vX - x; 2332 location[1] = vY - y; 2333 } 2334 2335 public void onDragEnter(DragObject d) { 2336 mDragEnforcer.onDragEnter(); 2337 mCreateUserFolderOnDrop = false; 2338 mAddToExistingFolderOnDrop = false; 2339 2340 mDropToLayout = null; 2341 CellLayout layout = getCurrentDropLayout(); 2342 setCurrentDropLayout(layout); 2343 setCurrentDragOverlappingLayout(layout); 2344 2345 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2346 // don't need to show the outlines 2347 if (LauncherApplication.isScreenLarge()) { 2348 showOutlines(); 2349 } 2350 } 2351 2352 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2353 Resources res = launcher.getResources(); 2354 Display display = launcher.getWindowManager().getDefaultDisplay(); 2355 Point smallestSize = new Point(); 2356 Point largestSize = new Point(); 2357 display.getCurrentSizeRange(smallestSize, largestSize); 2358 if (orientation == CellLayout.LANDSCAPE) { 2359 if (mLandscapeCellLayoutMetrics == null) { 2360 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2361 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2362 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2363 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2364 int width = largestSize.x - paddingLeft - paddingRight; 2365 int height = smallestSize.y - paddingTop - paddingBottom; 2366 mLandscapeCellLayoutMetrics = new Rect(); 2367 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2368 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2369 orientation); 2370 } 2371 return mLandscapeCellLayoutMetrics; 2372 } else if (orientation == CellLayout.PORTRAIT) { 2373 if (mPortraitCellLayoutMetrics == null) { 2374 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2375 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2376 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2377 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2378 int width = smallestSize.x - paddingLeft - paddingRight; 2379 int height = largestSize.y - paddingTop - paddingBottom; 2380 mPortraitCellLayoutMetrics = new Rect(); 2381 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2382 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2383 orientation); 2384 } 2385 return mPortraitCellLayoutMetrics; 2386 } 2387 return null; 2388 } 2389 2390 public void onDragExit(DragObject d) { 2391 mDragEnforcer.onDragExit(); 2392 2393 // Here we store the final page that will be dropped to, if the workspace in fact 2394 // receives the drop 2395 if (mInScrollArea) { 2396 if (isPageMoving()) { 2397 // If the user drops while the page is scrolling, we should use that page as the 2398 // destination instead of the page that is being hovered over. 2399 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2400 } else { 2401 mDropToLayout = mDragOverlappingLayout; 2402 } 2403 } else { 2404 mDropToLayout = mDragTargetLayout; 2405 } 2406 2407 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2408 mCreateUserFolderOnDrop = true; 2409 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2410 mAddToExistingFolderOnDrop = true; 2411 } 2412 2413 // Reset the scroll area and previous drag target 2414 onResetScrollArea(); 2415 setCurrentDropLayout(null); 2416 setCurrentDragOverlappingLayout(null); 2417 2418 mSpringLoadedDragController.cancel(); 2419 2420 if (!mIsPageMoving) { 2421 hideOutlines(); 2422 } 2423 } 2424 2425 void setCurrentDropLayout(CellLayout layout) { 2426 if (mDragTargetLayout != null) { 2427 mDragTargetLayout.revertTempState(); 2428 mDragTargetLayout.onDragExit(); 2429 } 2430 mDragTargetLayout = layout; 2431 if (mDragTargetLayout != null) { 2432 mDragTargetLayout.onDragEnter(); 2433 } 2434 cleanupReorder(true); 2435 cleanupFolderCreation(); 2436 setCurrentDropOverCell(-1, -1); 2437 } 2438 2439 void setCurrentDragOverlappingLayout(CellLayout layout) { 2440 if (mDragOverlappingLayout != null) { 2441 mDragOverlappingLayout.setIsDragOverlapping(false); 2442 } 2443 mDragOverlappingLayout = layout; 2444 if (mDragOverlappingLayout != null) { 2445 mDragOverlappingLayout.setIsDragOverlapping(true); 2446 } 2447 invalidate(); 2448 } 2449 2450 void setCurrentDropOverCell(int x, int y) { 2451 if (x != mDragOverX || y != mDragOverY) { 2452 mDragOverX = x; 2453 mDragOverY = y; 2454 setDragMode(DRAG_MODE_NONE); 2455 } 2456 } 2457 2458 void setDragMode(int dragMode) { 2459 if (dragMode != mDragMode) { 2460 if (dragMode == DRAG_MODE_NONE) { 2461 cleanupAddToFolder(); 2462 // We don't want to cancel the re-order alarm every time the target cell changes 2463 // as this feels to slow / unresponsive. 2464 cleanupReorder(false); 2465 cleanupFolderCreation(); 2466 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2467 cleanupReorder(true); 2468 cleanupFolderCreation(); 2469 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2470 cleanupAddToFolder(); 2471 cleanupReorder(true); 2472 } else if (dragMode == DRAG_MODE_REORDER) { 2473 cleanupAddToFolder(); 2474 cleanupFolderCreation(); 2475 } 2476 mDragMode = dragMode; 2477 } 2478 } 2479 2480 private void cleanupFolderCreation() { 2481 if (mDragFolderRingAnimator != null) { 2482 mDragFolderRingAnimator.animateToNaturalState(); 2483 } 2484 mFolderCreationAlarm.cancelAlarm(); 2485 } 2486 2487 private void cleanupAddToFolder() { 2488 if (mDragOverFolderIcon != null) { 2489 mDragOverFolderIcon.onDragExit(null); 2490 mDragOverFolderIcon = null; 2491 } 2492 } 2493 2494 private void cleanupReorder(boolean cancelAlarm) { 2495 // Any pending reorders are canceled 2496 if (cancelAlarm) { 2497 mReorderAlarm.cancelAlarm(); 2498 } 2499 mLastReorderX = -1; 2500 mLastReorderY = -1; 2501 } 2502 2503 public DropTarget getDropTargetDelegate(DragObject d) { 2504 return null; 2505 } 2506 2507 /* 2508 * 2509 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2510 * coordinate space. The argument xy is modified with the return result. 2511 * 2512 */ 2513 void mapPointFromSelfToChild(View v, float[] xy) { 2514 mapPointFromSelfToChild(v, xy, null); 2515 } 2516 2517 /* 2518 * 2519 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2520 * coordinate space. The argument xy is modified with the return result. 2521 * 2522 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2523 * computing it itself; we use this to avoid redundant matrix inversions in 2524 * findMatchingPageForDragOver 2525 * 2526 */ 2527 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2528 if (cachedInverseMatrix == null) { 2529 v.getMatrix().invert(mTempInverseMatrix); 2530 cachedInverseMatrix = mTempInverseMatrix; 2531 } 2532 int scrollX = getScrollX(); 2533 if (mNextPage != INVALID_PAGE) { 2534 scrollX = mScroller.getFinalX(); 2535 } 2536 xy[0] = xy[0] + scrollX - v.getLeft(); 2537 xy[1] = xy[1] + getScrollY() - v.getTop(); 2538 cachedInverseMatrix.mapPoints(xy); 2539 } 2540 2541 /* 2542 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2543 * covers the full screen) 2544 */ 2545 void mapPointFromSelfToSibling(View v, float[] xy) { 2546 xy[0] = xy[0] - v.getLeft(); 2547 xy[1] = xy[1] - v.getTop(); 2548 } 2549 2550 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2551 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2552 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2553 } 2554 2555 /* 2556 * 2557 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2558 * the parent View's coordinate space. The argument xy is modified with the return result. 2559 * 2560 */ 2561 void mapPointFromChildToSelf(View v, float[] xy) { 2562 v.getMatrix().mapPoints(xy); 2563 int scrollX = getScrollX(); 2564 if (mNextPage != INVALID_PAGE) { 2565 scrollX = mScroller.getFinalX(); 2566 } 2567 xy[0] -= (scrollX - v.getLeft()); 2568 xy[1] -= (getScrollY() - v.getTop()); 2569 } 2570 2571 static private float squaredDistance(float[] point1, float[] point2) { 2572 float distanceX = point1[0] - point2[0]; 2573 float distanceY = point2[1] - point2[1]; 2574 return distanceX * distanceX + distanceY * distanceY; 2575 } 2576 2577 /* 2578 * 2579 * Returns true if the passed CellLayout cl overlaps with dragView 2580 * 2581 */ 2582 boolean overlaps(CellLayout cl, DragView dragView, 2583 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2584 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2585 final float[] draggedItemTopLeft = mTempDragCoordinates; 2586 draggedItemTopLeft[0] = dragViewX; 2587 draggedItemTopLeft[1] = dragViewY; 2588 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2589 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2590 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2591 2592 // Transform the dragged item's top left coordinates 2593 // to the CellLayout's local coordinates 2594 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2595 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2596 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2597 2598 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2599 // Transform the dragged item's bottom right coordinates 2600 // to the CellLayout's local coordinates 2601 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2602 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2603 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2604 2605 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2606 float overlap = (overlapRegionRight - overlapRegionLeft) * 2607 (overlapRegionBottom - overlapRegionTop); 2608 if (overlap > 0) { 2609 return true; 2610 } 2611 } 2612 } 2613 return false; 2614 } 2615 2616 /* 2617 * 2618 * This method returns the CellLayout that is currently being dragged to. In order to drag 2619 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2620 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2621 * 2622 * Return null if no CellLayout is currently being dragged over 2623 * 2624 */ 2625 private CellLayout findMatchingPageForDragOver( 2626 DragView dragView, float originX, float originY, boolean exact) { 2627 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2628 // with the item being dragged and then choose the one that's closest to the touch point 2629 final int screenCount = getChildCount(); 2630 CellLayout bestMatchingScreen = null; 2631 float smallestDistSoFar = Float.MAX_VALUE; 2632 2633 for (int i = 0; i < screenCount; i++) { 2634 CellLayout cl = (CellLayout) getChildAt(i); 2635 2636 final float[] touchXy = {originX, originY}; 2637 // Transform the touch coordinates to the CellLayout's local coordinates 2638 // If the touch point is within the bounds of the cell layout, we can return immediately 2639 cl.getMatrix().invert(mTempInverseMatrix); 2640 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2641 2642 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2643 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2644 return cl; 2645 } 2646 2647 if (!exact) { 2648 // Get the center of the cell layout in screen coordinates 2649 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2650 cellLayoutCenter[0] = cl.getWidth()/2; 2651 cellLayoutCenter[1] = cl.getHeight()/2; 2652 mapPointFromChildToSelf(cl, cellLayoutCenter); 2653 2654 touchXy[0] = originX; 2655 touchXy[1] = originY; 2656 2657 // Calculate the distance between the center of the CellLayout 2658 // and the touch point 2659 float dist = squaredDistance(touchXy, cellLayoutCenter); 2660 2661 if (dist < smallestDistSoFar) { 2662 smallestDistSoFar = dist; 2663 bestMatchingScreen = cl; 2664 } 2665 } 2666 } 2667 return bestMatchingScreen; 2668 } 2669 2670 // This is used to compute the visual center of the dragView. This point is then 2671 // used to visualize drop locations and determine where to drop an item. The idea is that 2672 // the visual center represents the user's interpretation of where the item is, and hence 2673 // is the appropriate point to use when determining drop location. 2674 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2675 DragView dragView, float[] recycle) { 2676 float res[]; 2677 if (recycle == null) { 2678 res = new float[2]; 2679 } else { 2680 res = recycle; 2681 } 2682 2683 // First off, the drag view has been shifted in a way that is not represented in the 2684 // x and y values or the x/yOffsets. Here we account for that shift. 2685 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2686 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2687 2688 // These represent the visual top and left of drag view if a dragRect was provided. 2689 // If a dragRect was not provided, then they correspond to the actual view left and 2690 // top, as the dragRect is in that case taken to be the entire dragView. 2691 // R.dimen.dragViewOffsetY. 2692 int left = x - xOffset; 2693 int top = y - yOffset; 2694 2695 // In order to find the visual center, we shift by half the dragRect 2696 res[0] = left + dragView.getDragRegion().width() / 2; 2697 res[1] = top + dragView.getDragRegion().height() / 2; 2698 2699 return res; 2700 } 2701 2702 private boolean isDragWidget(DragObject d) { 2703 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2704 d.dragInfo instanceof PendingAddWidgetInfo); 2705 } 2706 private boolean isExternalDragWidget(DragObject d) { 2707 return d.dragSource != this && isDragWidget(d); 2708 } 2709 2710 public void onDragOver(DragObject d) { 2711 // Skip drag over events while we are dragging over side pages 2712 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2713 2714 Rect r = new Rect(); 2715 CellLayout layout = null; 2716 ItemInfo item = (ItemInfo) d.dragInfo; 2717 2718 // Ensure that we have proper spans for the item that we are dropping 2719 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2720 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2721 d.dragView, mDragViewVisualCenter); 2722 2723 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2724 // Identify whether we have dragged over a side page 2725 if (isSmall()) { 2726 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2727 mLauncher.getHotseat().getHitRect(r); 2728 if (r.contains(d.x, d.y)) { 2729 layout = mLauncher.getHotseat().getLayout(); 2730 } 2731 } 2732 if (layout == null) { 2733 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2734 } 2735 if (layout != mDragTargetLayout) { 2736 2737 setCurrentDropLayout(layout); 2738 setCurrentDragOverlappingLayout(layout); 2739 2740 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2741 if (isInSpringLoadedMode) { 2742 if (mLauncher.isHotseatLayout(layout)) { 2743 mSpringLoadedDragController.cancel(); 2744 } else { 2745 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2746 } 2747 } 2748 } 2749 } else { 2750 // Test to see if we are over the hotseat otherwise just use the current page 2751 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2752 mLauncher.getHotseat().getHitRect(r); 2753 if (r.contains(d.x, d.y)) { 2754 layout = mLauncher.getHotseat().getLayout(); 2755 } 2756 } 2757 if (layout == null) { 2758 layout = getCurrentDropLayout(); 2759 } 2760 if (layout != mDragTargetLayout) { 2761 setCurrentDropLayout(layout); 2762 setCurrentDragOverlappingLayout(layout); 2763 } 2764 } 2765 2766 // Handle the drag over 2767 if (mDragTargetLayout != null) { 2768 // We want the point to be mapped to the dragTarget. 2769 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2770 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2771 } else { 2772 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2773 } 2774 2775 ItemInfo info = (ItemInfo) d.dragInfo; 2776 2777 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2778 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2779 mDragTargetLayout, mTargetCell); 2780 2781 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2782 2783 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2784 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2785 2786 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2787 mTargetCell[1]); 2788 2789 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2790 targetCellDistance, dragOverView); 2791 2792 int minSpanX = item.spanX; 2793 int minSpanY = item.spanY; 2794 if (item.minSpanX > 0 && item.minSpanY > 0) { 2795 minSpanX = item.minSpanX; 2796 minSpanY = item.minSpanY; 2797 } 2798 2799 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2800 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2801 item.spanY, child, mTargetCell); 2802 2803 if (!nearestDropOccupied) { 2804 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2805 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2806 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2807 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2808 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2809 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2810 mLastReorderY != mTargetCell[1])) { 2811 2812 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2813 // reorder, then we schedule a reorder 2814 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2815 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2816 mReorderAlarm.setOnAlarmListener(listener); 2817 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2818 } 2819 2820 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2821 !nearestDropOccupied) { 2822 if (mDragTargetLayout != null) { 2823 mDragTargetLayout.revertTempState(); 2824 } 2825 } 2826 } 2827 } 2828 2829 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2830 int[] targetCell, float distance, View dragOverView) { 2831 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2832 false); 2833 2834 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2835 !mFolderCreationAlarm.alarmPending()) { 2836 mFolderCreationAlarm.setOnAlarmListener(new 2837 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2838 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2839 return; 2840 } 2841 2842 boolean willAddToFolder = 2843 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2844 2845 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2846 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2847 mDragOverFolderIcon.onDragEnter(info); 2848 if (targetLayout != null) { 2849 targetLayout.clearDragOutlines(); 2850 } 2851 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2852 return; 2853 } 2854 2855 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2856 setDragMode(DRAG_MODE_NONE); 2857 } 2858 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2859 setDragMode(DRAG_MODE_NONE); 2860 } 2861 2862 return; 2863 } 2864 2865 class FolderCreationAlarmListener implements OnAlarmListener { 2866 CellLayout layout; 2867 int cellX; 2868 int cellY; 2869 2870 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2871 this.layout = layout; 2872 this.cellX = cellX; 2873 this.cellY = cellY; 2874 } 2875 2876 public void onAlarm(Alarm alarm) { 2877 if (mDragFolderRingAnimator == null) { 2878 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2879 } 2880 mDragFolderRingAnimator.setCell(cellX, cellY); 2881 mDragFolderRingAnimator.setCellLayout(layout); 2882 mDragFolderRingAnimator.animateToAcceptState(); 2883 layout.showFolderAccept(mDragFolderRingAnimator); 2884 layout.clearDragOutlines(); 2885 setDragMode(DRAG_MODE_CREATE_FOLDER); 2886 } 2887 } 2888 2889 class ReorderAlarmListener implements OnAlarmListener { 2890 float[] dragViewCenter; 2891 int minSpanX, minSpanY, spanX, spanY; 2892 DragView dragView; 2893 View child; 2894 2895 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2896 int spanY, DragView dragView, View child) { 2897 this.dragViewCenter = dragViewCenter; 2898 this.minSpanX = minSpanX; 2899 this.minSpanY = minSpanY; 2900 this.spanX = spanX; 2901 this.spanY = spanY; 2902 this.child = child; 2903 this.dragView = dragView; 2904 } 2905 2906 public void onAlarm(Alarm alarm) { 2907 int[] resultSpan = new int[2]; 2908 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2909 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2910 mLastReorderX = mTargetCell[0]; 2911 mLastReorderY = mTargetCell[1]; 2912 2913 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2914 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2915 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2916 2917 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2918 mDragTargetLayout.revertTempState(); 2919 } else { 2920 setDragMode(DRAG_MODE_REORDER); 2921 } 2922 2923 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2924 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2925 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2926 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2927 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2928 } 2929 } 2930 2931 @Override 2932 public void getHitRect(Rect outRect) { 2933 // We want the workspace to have the whole area of the display (it will find the correct 2934 // cell layout to drop to in the existing drag/drop logic. 2935 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2936 } 2937 2938 /** 2939 * Add the item specified by dragInfo to the given layout. 2940 * @return true if successful 2941 */ 2942 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2943 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2944 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2945 return true; 2946 } 2947 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2948 return false; 2949 } 2950 2951 private void onDropExternal(int[] touchXY, Object dragInfo, 2952 CellLayout cellLayout, boolean insertAtFirst) { 2953 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2954 } 2955 2956 /** 2957 * Drop an item that didn't originate on one of the workspace screens. 2958 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2959 * come from another app altogether. 2960 * 2961 * NOTE: This can also be called when we are outside of a drag event, when we want 2962 * to add an item to one of the workspace screens. 2963 */ 2964 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2965 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2966 final Runnable exitSpringLoadedRunnable = new Runnable() { 2967 @Override 2968 public void run() { 2969 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2970 } 2971 }; 2972 2973 ItemInfo info = (ItemInfo) dragInfo; 2974 int spanX = info.spanX; 2975 int spanY = info.spanY; 2976 if (mDragInfo != null) { 2977 spanX = mDragInfo.spanX; 2978 spanY = mDragInfo.spanY; 2979 } 2980 2981 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2982 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2983 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2984 final int screen = indexOfChild(cellLayout); 2985 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2986 && mState != State.SPRING_LOADED) { 2987 snapToPage(screen); 2988 } 2989 2990 if (info instanceof PendingAddItemInfo) { 2991 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2992 2993 boolean findNearestVacantCell = true; 2994 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2995 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2996 cellLayout, mTargetCell); 2997 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2998 mDragViewVisualCenter[1], mTargetCell); 2999 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3000 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3001 cellLayout, mTargetCell, distance)) { 3002 findNearestVacantCell = false; 3003 } 3004 } 3005 3006 final ItemInfo item = (ItemInfo) d.dragInfo; 3007 if (findNearestVacantCell) { 3008 int minSpanX = item.spanX; 3009 int minSpanY = item.spanY; 3010 if (item.minSpanX > 0 && item.minSpanY > 0) { 3011 minSpanX = item.minSpanX; 3012 minSpanY = item.minSpanY; 3013 } 3014 int[] resultSpan = new int[2]; 3015 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3016 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3017 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3018 item.spanX = resultSpan[0]; 3019 item.spanY = resultSpan[1]; 3020 } 3021 3022 Runnable onAnimationCompleteRunnable = new Runnable() { 3023 @Override 3024 public void run() { 3025 // When dragging and dropping from customization tray, we deal with creating 3026 // widgets/shortcuts/folders in a slightly different way 3027 switch (pendingInfo.itemType) { 3028 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3029 int span[] = new int[2]; 3030 span[0] = item.spanX; 3031 span[1] = item.spanY; 3032 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3033 container, screen, mTargetCell, span, null); 3034 break; 3035 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3036 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3037 container, screen, mTargetCell, null); 3038 break; 3039 default: 3040 throw new IllegalStateException("Unknown item type: " + 3041 pendingInfo.itemType); 3042 } 3043 } 3044 }; 3045 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3046 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3047 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3048 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3049 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3050 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3051 } 3052 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3053 animationStyle, finalView, true); 3054 } else { 3055 // This is for other drag/drop cases, like dragging from All Apps 3056 View view = null; 3057 3058 switch (info.itemType) { 3059 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3060 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3061 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3062 // Came from all apps -- make a copy 3063 info = new ShortcutInfo((ApplicationInfo) info); 3064 } 3065 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3066 (ShortcutInfo) info); 3067 break; 3068 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3069 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3070 (FolderInfo) info, mIconCache); 3071 break; 3072 default: 3073 throw new IllegalStateException("Unknown item type: " + info.itemType); 3074 } 3075 3076 // First we find the cell nearest to point at which the item is 3077 // dropped, without any consideration to whether there is an item there. 3078 if (touchXY != null) { 3079 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3080 cellLayout, mTargetCell); 3081 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3082 mDragViewVisualCenter[1], mTargetCell); 3083 d.postAnimationRunnable = exitSpringLoadedRunnable; 3084 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3085 true, d.dragView, d.postAnimationRunnable)) { 3086 return; 3087 } 3088 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3089 true)) { 3090 return; 3091 } 3092 } 3093 3094 if (touchXY != null) { 3095 // when dragging and dropping, just find the closest free spot 3096 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3097 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3098 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3099 } else { 3100 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3101 } 3102 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3103 info.spanY, insertAtFirst); 3104 cellLayout.onDropChild(view); 3105 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3106 cellLayout.getShortcutsAndWidgets().measureChild(view); 3107 3108 3109 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3110 lp.cellX, lp.cellY); 3111 3112 if (d.dragView != null) { 3113 // We wrap the animation call in the temporary set and reset of the current 3114 // cellLayout to its final transform -- this means we animate the drag view to 3115 // the correct final location. 3116 setFinalTransitionTransform(cellLayout); 3117 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3118 exitSpringLoadedRunnable); 3119 resetTransitionTransform(cellLayout); 3120 } 3121 } 3122 } 3123 3124 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3125 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3126 widgetInfo.spanY, widgetInfo, false); 3127 int visibility = layout.getVisibility(); 3128 layout.setVisibility(VISIBLE); 3129 3130 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3131 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3132 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3133 Bitmap.Config.ARGB_8888); 3134 Canvas c = new Canvas(b); 3135 3136 layout.measure(width, height); 3137 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3138 layout.draw(c); 3139 c.setBitmap(null); 3140 layout.setVisibility(visibility); 3141 return b; 3142 } 3143 3144 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3145 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3146 boolean external, boolean scale) { 3147 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3148 // location and size on the home screen. 3149 int spanX = info.spanX; 3150 int spanY = info.spanY; 3151 3152 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3153 loc[0] = r.left; 3154 loc[1] = r.top; 3155 3156 setFinalTransitionTransform(layout); 3157 float cellLayoutScale = 3158 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3159 resetTransitionTransform(layout); 3160 3161 float dragViewScaleX; 3162 float dragViewScaleY; 3163 if (scale) { 3164 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3165 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3166 } else { 3167 dragViewScaleX = 1f; 3168 dragViewScaleY = 1f; 3169 } 3170 3171 // The animation will scale the dragView about its center, so we need to center about 3172 // the final location. 3173 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3174 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3175 3176 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3177 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3178 } 3179 3180 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3181 final Runnable onCompleteRunnable, int animationType, final View finalView, 3182 boolean external) { 3183 Rect from = new Rect(); 3184 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3185 3186 int[] finalPos = new int[2]; 3187 float scaleXY[] = new float[2]; 3188 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3189 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3190 external, scalePreview); 3191 3192 Resources res = mLauncher.getResources(); 3193 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3194 3195 // In the case where we've prebound the widget, we remove it from the DragLayer 3196 if (finalView instanceof AppWidgetHostView && external) { 3197 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3198 mLauncher.getDragLayer().removeView(finalView); 3199 } 3200 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3201 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3202 dragView.setCrossFadeBitmap(crossFadeBitmap); 3203 dragView.crossFade((int) (duration * 0.8f)); 3204 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3205 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3206 } 3207 3208 DragLayer dragLayer = mLauncher.getDragLayer(); 3209 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3210 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3211 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3212 } else { 3213 int endStyle; 3214 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3215 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3216 } else { 3217 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3218 } 3219 3220 Runnable onComplete = new Runnable() { 3221 @Override 3222 public void run() { 3223 if (finalView != null) { 3224 finalView.setVisibility(VISIBLE); 3225 } 3226 if (onCompleteRunnable != null) { 3227 onCompleteRunnable.run(); 3228 } 3229 } 3230 }; 3231 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3232 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3233 duration, this); 3234 } 3235 } 3236 3237 public void setFinalTransitionTransform(CellLayout layout) { 3238 if (isSwitchingState()) { 3239 int index = indexOfChild(layout); 3240 mCurrentScaleX = layout.getScaleX(); 3241 mCurrentScaleY = layout.getScaleY(); 3242 mCurrentTranslationX = layout.getTranslationX(); 3243 mCurrentTranslationY = layout.getTranslationY(); 3244 mCurrentRotationY = layout.getRotationY(); 3245 layout.setScaleX(mNewScaleXs[index]); 3246 layout.setScaleY(mNewScaleYs[index]); 3247 layout.setTranslationX(mNewTranslationXs[index]); 3248 layout.setTranslationY(mNewTranslationYs[index]); 3249 layout.setRotationY(mNewRotationYs[index]); 3250 } 3251 } 3252 public void resetTransitionTransform(CellLayout layout) { 3253 if (isSwitchingState()) { 3254 mCurrentScaleX = layout.getScaleX(); 3255 mCurrentScaleY = layout.getScaleY(); 3256 mCurrentTranslationX = layout.getTranslationX(); 3257 mCurrentTranslationY = layout.getTranslationY(); 3258 mCurrentRotationY = layout.getRotationY(); 3259 layout.setScaleX(mCurrentScaleX); 3260 layout.setScaleY(mCurrentScaleY); 3261 layout.setTranslationX(mCurrentTranslationX); 3262 layout.setTranslationY(mCurrentTranslationY); 3263 layout.setRotationY(mCurrentRotationY); 3264 } 3265 } 3266 3267 /** 3268 * Return the current {@link CellLayout}, correctly picking the destination 3269 * screen while a scroll is in progress. 3270 */ 3271 public CellLayout getCurrentDropLayout() { 3272 return (CellLayout) getChildAt(getNextPage()); 3273 } 3274 3275 /** 3276 * Return the current CellInfo describing our current drag; this method exists 3277 * so that Launcher can sync this object with the correct info when the activity is created/ 3278 * destroyed 3279 * 3280 */ 3281 public CellLayout.CellInfo getDragInfo() { 3282 return mDragInfo; 3283 } 3284 3285 /** 3286 * Calculate the nearest cell where the given object would be dropped. 3287 * 3288 * pixelX and pixelY should be in the coordinate system of layout 3289 */ 3290 private int[] findNearestArea(int pixelX, int pixelY, 3291 int spanX, int spanY, CellLayout layout, int[] recycle) { 3292 return layout.findNearestArea( 3293 pixelX, pixelY, spanX, spanY, recycle); 3294 } 3295 3296 void setup(DragController dragController) { 3297 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3298 mDragController = dragController; 3299 3300 // hardware layers on children are enabled on startup, but should be disabled until 3301 // needed 3302 updateChildrenLayersEnabled(false); 3303 setWallpaperDimension(); 3304 } 3305 3306 /** 3307 * Called at the end of a drag which originated on the workspace. 3308 */ 3309 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3310 boolean success) { 3311 if (success) { 3312 if (target != this) { 3313 if (mDragInfo != null) { 3314 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3315 if (mDragInfo.cell instanceof DropTarget) { 3316 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3317 } 3318 } 3319 } 3320 } else if (mDragInfo != null) { 3321 CellLayout cellLayout; 3322 if (mLauncher.isHotseatLayout(target)) { 3323 cellLayout = mLauncher.getHotseat().getLayout(); 3324 } else { 3325 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3326 } 3327 cellLayout.onDropChild(mDragInfo.cell); 3328 } 3329 if (d.cancelled && mDragInfo.cell != null) { 3330 mDragInfo.cell.setVisibility(VISIBLE); 3331 } 3332 mDragOutline = null; 3333 mDragInfo = null; 3334 3335 // Hide the scrolling indicator after you pick up an item 3336 hideScrollingIndicator(false); 3337 } 3338 3339 void updateItemLocationsInDatabase(CellLayout cl) { 3340 int count = cl.getShortcutsAndWidgets().getChildCount(); 3341 3342 int screen = indexOfChild(cl); 3343 int container = Favorites.CONTAINER_DESKTOP; 3344 3345 if (mLauncher.isHotseatLayout(cl)) { 3346 screen = -1; 3347 container = Favorites.CONTAINER_HOTSEAT; 3348 } 3349 3350 for (int i = 0; i < count; i++) { 3351 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3352 ItemInfo info = (ItemInfo) v.getTag(); 3353 // Null check required as the AllApps button doesn't have an item info 3354 if (info != null) { 3355 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3356 info.cellY, info.spanX, info.spanY); 3357 } 3358 } 3359 } 3360 3361 @Override 3362 public boolean supportsFlingToDelete() { 3363 return true; 3364 } 3365 3366 @Override 3367 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3368 // Do nothing 3369 } 3370 3371 @Override 3372 public void onFlingToDeleteCompleted() { 3373 // Do nothing 3374 } 3375 3376 public boolean isDropEnabled() { 3377 return true; 3378 } 3379 3380 @Override 3381 protected void onRestoreInstanceState(Parcelable state) { 3382 super.onRestoreInstanceState(state); 3383 Launcher.setScreen(mCurrentPage); 3384 } 3385 3386 @Override 3387 public void scrollLeft() { 3388 if (!isSmall() && !mIsSwitchingState) { 3389 super.scrollLeft(); 3390 } 3391 Folder openFolder = getOpenFolder(); 3392 if (openFolder != null) { 3393 openFolder.completeDragExit(); 3394 } 3395 } 3396 3397 @Override 3398 public void scrollRight() { 3399 if (!isSmall() && !mIsSwitchingState) { 3400 super.scrollRight(); 3401 } 3402 Folder openFolder = getOpenFolder(); 3403 if (openFolder != null) { 3404 openFolder.completeDragExit(); 3405 } 3406 } 3407 3408 @Override 3409 public boolean onEnterScrollArea(int x, int y, int direction) { 3410 // Ignore the scroll area if we are dragging over the hot seat 3411 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3412 if (mLauncher.getHotseat() != null && isPortrait) { 3413 Rect r = new Rect(); 3414 mLauncher.getHotseat().getHitRect(r); 3415 if (r.contains(x, y)) { 3416 return false; 3417 } 3418 } 3419 3420 boolean result = false; 3421 if (!isSmall() && !mIsSwitchingState) { 3422 mInScrollArea = true; 3423 3424 final int page = getNextPage() + 3425 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3426 3427 // We always want to exit the current layout to ensure parity of enter / exit 3428 setCurrentDropLayout(null); 3429 3430 if (0 <= page && page < getChildCount()) { 3431 CellLayout layout = (CellLayout) getChildAt(page); 3432 setCurrentDragOverlappingLayout(layout); 3433 3434 // Workspace is responsible for drawing the edge glow on adjacent pages, 3435 // so we need to redraw the workspace when this may have changed. 3436 invalidate(); 3437 result = true; 3438 } 3439 } 3440 return result; 3441 } 3442 3443 @Override 3444 public boolean onExitScrollArea() { 3445 boolean result = false; 3446 if (mInScrollArea) { 3447 invalidate(); 3448 CellLayout layout = getCurrentDropLayout(); 3449 setCurrentDropLayout(layout); 3450 setCurrentDragOverlappingLayout(layout); 3451 3452 result = true; 3453 mInScrollArea = false; 3454 } 3455 return result; 3456 } 3457 3458 private void onResetScrollArea() { 3459 setCurrentDragOverlappingLayout(null); 3460 mInScrollArea = false; 3461 } 3462 3463 /** 3464 * Returns a specific CellLayout 3465 */ 3466 CellLayout getParentCellLayoutForView(View v) { 3467 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3468 for (CellLayout layout : layouts) { 3469 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3470 return layout; 3471 } 3472 } 3473 return null; 3474 } 3475 3476 /** 3477 * Returns a list of all the CellLayouts in the workspace. 3478 */ 3479 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3480 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3481 int screenCount = getChildCount(); 3482 for (int screen = 0; screen < screenCount; screen++) { 3483 layouts.add(((CellLayout) getChildAt(screen))); 3484 } 3485 if (mLauncher.getHotseat() != null) { 3486 layouts.add(mLauncher.getHotseat().getLayout()); 3487 } 3488 return layouts; 3489 } 3490 3491 /** 3492 * We should only use this to search for specific children. Do not use this method to modify 3493 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3494 * the hotseat and workspace pages 3495 */ 3496 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3497 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3498 new ArrayList<ShortcutAndWidgetContainer>(); 3499 int screenCount = getChildCount(); 3500 for (int screen = 0; screen < screenCount; screen++) { 3501 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3502 } 3503 if (mLauncher.getHotseat() != null) { 3504 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3505 } 3506 return childrenLayouts; 3507 } 3508 3509 public Folder getFolderForTag(Object tag) { 3510 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3511 getAllShortcutAndWidgetContainers(); 3512 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3513 int count = layout.getChildCount(); 3514 for (int i = 0; i < count; i++) { 3515 View child = layout.getChildAt(i); 3516 if (child instanceof Folder) { 3517 Folder f = (Folder) child; 3518 if (f.getInfo() == tag && f.getInfo().opened) { 3519 return f; 3520 } 3521 } 3522 } 3523 } 3524 return null; 3525 } 3526 3527 public View getViewForTag(Object tag) { 3528 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3529 getAllShortcutAndWidgetContainers(); 3530 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3531 int count = layout.getChildCount(); 3532 for (int i = 0; i < count; i++) { 3533 View child = layout.getChildAt(i); 3534 if (child.getTag() == tag) { 3535 return child; 3536 } 3537 } 3538 } 3539 return null; 3540 } 3541 3542 void clearDropTargets() { 3543 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3544 getAllShortcutAndWidgetContainers(); 3545 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3546 int childCount = layout.getChildCount(); 3547 for (int j = 0; j < childCount; j++) { 3548 View v = layout.getChildAt(j); 3549 if (v instanceof DropTarget) { 3550 mDragController.removeDropTarget((DropTarget) v); 3551 } 3552 } 3553 } 3554 } 3555 3556 void removeItems(final ArrayList<ApplicationInfo> apps) { 3557 final HashSet<String> packageNames = new HashSet<String>(); 3558 final int appCount = apps.size(); 3559 for (int i = 0; i < appCount; i++) { 3560 packageNames.add(apps.get(i).componentName.getPackageName()); 3561 } 3562 3563 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3564 for (final CellLayout layoutParent: cellLayouts) { 3565 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3566 3567 // Avoid ANRs by treating each screen separately 3568 post(new Runnable() { 3569 public void run() { 3570 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3571 childrenToRemove.clear(); 3572 3573 int childCount = layout.getChildCount(); 3574 for (int j = 0; j < childCount; j++) { 3575 final View view = layout.getChildAt(j); 3576 Object tag = view.getTag(); 3577 3578 if (tag instanceof ShortcutInfo) { 3579 final ShortcutInfo info = (ShortcutInfo) tag; 3580 final Intent intent = info.intent; 3581 final ComponentName name = intent.getComponent(); 3582 3583 if (name != null) { 3584 if (packageNames.contains(name.getPackageName())) { 3585 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3586 childrenToRemove.add(view); 3587 } 3588 } 3589 } else if (tag instanceof FolderInfo) { 3590 final FolderInfo info = (FolderInfo) tag; 3591 final ArrayList<ShortcutInfo> contents = info.contents; 3592 final int contentsCount = contents.size(); 3593 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3594 new ArrayList<ShortcutInfo>(); 3595 3596 for (int k = 0; k < contentsCount; k++) { 3597 final ShortcutInfo appInfo = contents.get(k); 3598 final Intent intent = appInfo.intent; 3599 final ComponentName name = intent.getComponent(); 3600 3601 if (name != null) { 3602 if (packageNames.contains(name.getPackageName())) { 3603 appsToRemoveFromFolder.add(appInfo); 3604 } 3605 } 3606 } 3607 for (ShortcutInfo item: appsToRemoveFromFolder) { 3608 info.remove(item); 3609 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3610 } 3611 } else if (tag instanceof LauncherAppWidgetInfo) { 3612 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3613 final ComponentName provider = info.providerName; 3614 if (provider != null) { 3615 if (packageNames.contains(provider.getPackageName())) { 3616 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3617 childrenToRemove.add(view); 3618 } 3619 } 3620 } 3621 } 3622 3623 childCount = childrenToRemove.size(); 3624 for (int j = 0; j < childCount; j++) { 3625 View child = childrenToRemove.get(j); 3626 // Note: We can not remove the view directly from CellLayoutChildren as this 3627 // does not re-mark the spaces as unoccupied. 3628 layoutParent.removeViewInLayout(child); 3629 if (child instanceof DropTarget) { 3630 mDragController.removeDropTarget((DropTarget)child); 3631 } 3632 } 3633 3634 if (childCount > 0) { 3635 layout.requestLayout(); 3636 layout.invalidate(); 3637 } 3638 } 3639 }); 3640 } 3641 3642 // It is no longer the case the BubbleTextViews correspond 1:1 with the workspace items in 3643 // the database (and LauncherModel) since shortcuts are not added and animated in until 3644 // the user returns to launcher. As a result, we really should be cleaning up the Db 3645 // regardless of whether the item was added or not (unlike the logic above). This is only 3646 // relevant for direct workspace items. 3647 post(new Runnable() { 3648 @Override 3649 public void run() { 3650 String spKey = LauncherApplication.getSharedPreferencesKey(); 3651 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3652 Context.MODE_PRIVATE); 3653 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3654 null); 3655 3656 for (String packageName: packageNames) { 3657 // Remove all items that have the same package, but were not removed above 3658 ArrayList<ShortcutInfo> infos = 3659 mLauncher.getModel().getShortcutInfosForPackage(packageName); 3660 for (ShortcutInfo info : infos) { 3661 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3662 } 3663 // Remove all queued items that match the same package 3664 if (newApps != null) { 3665 synchronized (newApps) { 3666 for (String intentStr : newApps) { 3667 try { 3668 Intent intent = Intent.parseUri(intentStr, 0); 3669 String pn = ItemInfo.getPackageName(intent); 3670 if (packageNames.contains(pn)) { 3671 newApps.remove(intentStr); 3672 } 3673 } catch (URISyntaxException e) {} 3674 } 3675 } 3676 } 3677 } 3678 } 3679 }); 3680 } 3681 3682 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3683 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3684 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3685 int childCount = layout.getChildCount(); 3686 for (int j = 0; j < childCount; j++) { 3687 final View view = layout.getChildAt(j); 3688 Object tag = view.getTag(); 3689 if (tag instanceof ShortcutInfo) { 3690 ShortcutInfo info = (ShortcutInfo) tag; 3691 // We need to check for ACTION_MAIN otherwise getComponent() might 3692 // return null for some shortcuts (for instance, for shortcuts to 3693 // web pages.) 3694 final Intent intent = info.intent; 3695 final ComponentName name = intent.getComponent(); 3696 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3697 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3698 final int appCount = apps.size(); 3699 for (int k = 0; k < appCount; k++) { 3700 ApplicationInfo app = apps.get(k); 3701 if (app.componentName.equals(name)) { 3702 BubbleTextView shortcut = (BubbleTextView) view; 3703 info.updateIcon(mIconCache); 3704 info.title = app.title.toString(); 3705 shortcut.applyFromShortcutInfo(info, mIconCache); 3706 } 3707 } 3708 } 3709 } 3710 } 3711 } 3712 } 3713 3714 void moveToDefaultScreen(boolean animate) { 3715 if (!isSmall()) { 3716 if (animate) { 3717 snapToPage(mDefaultPage); 3718 } else { 3719 setCurrentPage(mDefaultPage); 3720 } 3721 } 3722 getChildAt(mDefaultPage).requestFocus(); 3723 } 3724 3725 @Override 3726 public void syncPages() { 3727 } 3728 3729 @Override 3730 public void syncPageItems(int page, boolean immediate) { 3731 } 3732 3733 @Override 3734 protected String getCurrentPageDescription() { 3735 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3736 return String.format(getContext().getString(R.string.workspace_scroll_format), 3737 page + 1, getChildCount()); 3738 } 3739 3740 public void getLocationInDragLayer(int[] loc) { 3741 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3742 } 3743 3744 void setFadeForOverScroll(float fade) { 3745 if (!isScrollingIndicatorEnabled()) return; 3746 3747 mOverscrollFade = fade; 3748 float reducedFade = 0.5f + 0.5f * (1 - fade); 3749 final ViewGroup parent = (ViewGroup) getParent(); 3750 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3751 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3752 final View scrollIndicator = getScrollingIndicator(); 3753 3754 cancelScrollingIndicatorAnimations(); 3755 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3756 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3757 scrollIndicator.setAlpha(1 - fade); 3758 } 3759} 3760