Workspace.java revision 3d50932a93dd367537db3548bde29d1380b371c0
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.AppWidgetManager; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.Intent; 32import android.content.SharedPreferences; 33import android.content.res.Resources; 34import android.content.res.TypedArray; 35import android.graphics.Bitmap; 36import android.graphics.Camera; 37import android.graphics.Canvas; 38import android.graphics.Matrix; 39import android.graphics.Paint; 40import android.graphics.Point; 41import android.graphics.PointF; 42import android.graphics.Rect; 43import android.graphics.Region.Op; 44import android.graphics.drawable.Drawable; 45import android.os.IBinder; 46import android.os.Parcelable; 47import android.util.AttributeSet; 48import android.util.DisplayMetrics; 49import android.util.Log; 50import android.view.Display; 51import android.view.MotionEvent; 52import android.view.View; 53import android.view.ViewGroup; 54import android.view.animation.DecelerateInterpolator; 55import android.widget.ImageView; 56import android.widget.TextView; 57 58import com.android.launcher.R; 59import com.android.launcher2.FolderIcon.FolderRingAnimator; 60import com.android.launcher2.LauncherSettings.Favorites; 61 62import java.net.URISyntaxException; 63import java.util.ArrayList; 64import java.util.HashSet; 65import java.util.Iterator; 66import java.util.Set; 67 68/** 69 * The workspace is a wide area with a wallpaper and a finite number of pages. 70 * Each page contains a number of icons, folders or widgets the user can 71 * interact with. A workspace is meant to be used with a fixed width only. 72 */ 73public class Workspace extends SmoothPagedView 74 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 75 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 76 private static final String TAG = "Launcher.Workspace"; 77 78 // Y rotation to apply to the workspace screens 79 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 80 private static float CAMERA_DISTANCE = 6500; 81 82 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 83 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 84 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 85 86 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 87 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 88 private static final int FLING_THRESHOLD_VELOCITY = 500; 89 90 // These animators are used to fade the children's outlines 91 private ObjectAnimator mChildrenOutlineFadeInAnimation; 92 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 93 private float mChildrenOutlineAlpha = 0; 94 95 // These properties refer to the background protection gradient used for AllApps and Customize 96 private ValueAnimator mBackgroundFadeInAnimation; 97 private ValueAnimator mBackgroundFadeOutAnimation; 98 private Drawable mBackground; 99 boolean mDrawBackground = true; 100 private float mBackgroundAlpha = 0; 101 private float mOverScrollMaxBackgroundAlpha = 0.0f; 102 103 private float mWallpaperScrollRatio = 1.0f; 104 105 private final WallpaperManager mWallpaperManager; 106 private IBinder mWindowToken; 107 private static final float WALLPAPER_SCREENS_SPAN = 2f; 108 109 private int mDefaultPage; 110 111 /** 112 * CellInfo for the cell that is currently being dragged 113 */ 114 private CellLayout.CellInfo mDragInfo; 115 116 /** 117 * Target drop area calculated during last acceptDrop call. 118 */ 119 private int[] mTargetCell = new int[2]; 120 private int mDragOverX = -1; 121 private int mDragOverY = -1; 122 123 static Rect mLandscapeCellLayoutMetrics = null; 124 static Rect mPortraitCellLayoutMetrics = null; 125 126 /** 127 * The CellLayout that is currently being dragged over 128 */ 129 private CellLayout mDragTargetLayout = null; 130 /** 131 * The CellLayout that we will show as glowing 132 */ 133 private CellLayout mDragOverlappingLayout = null; 134 135 /** 136 * The CellLayout which will be dropped to 137 */ 138 private CellLayout mDropToLayout = null; 139 140 private Launcher mLauncher; 141 private IconCache mIconCache; 142 private DragController mDragController; 143 144 // These are temporary variables to prevent having to allocate a new object just to 145 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 146 private int[] mTempCell = new int[2]; 147 private int[] mTempEstimate = new int[2]; 148 private float[] mDragViewVisualCenter = new float[2]; 149 private float[] mTempDragCoordinates = new float[2]; 150 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 151 private float[] mTempDragBottomRightCoordinates = new float[2]; 152 private Matrix mTempInverseMatrix = new Matrix(); 153 154 private SpringLoadedDragController mSpringLoadedDragController; 155 private float mSpringLoadedShrinkFactor; 156 157 private static final int DEFAULT_CELL_COUNT_X = 4; 158 private static final int DEFAULT_CELL_COUNT_Y = 4; 159 160 // State variable that indicates whether the pages are small (ie when you're 161 // in all apps or customize mode) 162 163 enum State { NORMAL, SPRING_LOADED, SMALL }; 164 private State mState = State.NORMAL; 165 private boolean mIsSwitchingState = false; 166 167 boolean mAnimatingViewIntoPlace = false; 168 boolean mIsDragOccuring = false; 169 boolean mChildrenLayersEnabled = true; 170 171 /** Is the user is dragging an item near the edge of a page? */ 172 private boolean mInScrollArea = false; 173 174 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 175 private Bitmap mDragOutline = null; 176 private final Rect mTempRect = new Rect(); 177 private final int[] mTempXY = new int[2]; 178 private float mOverscrollFade = 0; 179 private boolean mOverscrollTransformsSet; 180 public static final int DRAG_BITMAP_PADDING = 2; 181 private boolean mWorkspaceFadeInAdjacentScreens; 182 183 // Camera and Matrix used to determine the final position of a neighboring CellLayout 184 private final Matrix mMatrix = new Matrix(); 185 private final Camera mCamera = new Camera(); 186 private final float mTempFloat2[] = new float[2]; 187 188 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 189 int mWallpaperWidth; 190 int mWallpaperHeight; 191 WallpaperOffsetInterpolator mWallpaperOffset; 192 boolean mUpdateWallpaperOffsetImmediately = false; 193 private Runnable mDelayedResizeRunnable; 194 private Runnable mDelayedSnapToPageRunnable; 195 private Point mDisplaySize = new Point(); 196 private boolean mIsStaticWallpaper; 197 private int mWallpaperTravelWidth; 198 private int mSpringLoadedPageSpacing; 199 200 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 201 private static final int FOLDER_CREATION_TIMEOUT = 0; 202 private static final int REORDER_TIMEOUT = 250; 203 private final Alarm mFolderCreationAlarm = new Alarm(); 204 private final Alarm mReorderAlarm = new Alarm(); 205 private FolderRingAnimator mDragFolderRingAnimator = null; 206 private FolderIcon mDragOverFolderIcon = null; 207 private boolean mCreateUserFolderOnDrop = false; 208 private boolean mAddToExistingFolderOnDrop = false; 209 private DropTarget.DragEnforcer mDragEnforcer; 210 private float mMaxDistanceForFolderCreation; 211 212 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 213 private float mXDown; 214 private float mYDown; 215 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 216 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 217 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 218 219 // Relating to the animation of items being dropped externally 220 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 221 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 222 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 223 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 224 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 225 226 // Related to dragging, folder creation and reordering 227 private static final int DRAG_MODE_NONE = 0; 228 private static final int DRAG_MODE_CREATE_FOLDER = 1; 229 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 230 private static final int DRAG_MODE_REORDER = 3; 231 private int mDragMode = DRAG_MODE_NONE; 232 private int mLastReorderX = -1; 233 private int mLastReorderY = -1; 234 235 // These variables are used for storing the initial and final values during workspace animations 236 private int mSavedScrollX; 237 private float mSavedRotationY; 238 private float mSavedTranslationX; 239 private float mCurrentScaleX; 240 private float mCurrentScaleY; 241 private float mCurrentRotationY; 242 private float mCurrentTranslationX; 243 private float mCurrentTranslationY; 244 private float[] mOldTranslationXs; 245 private float[] mOldTranslationYs; 246 private float[] mOldScaleXs; 247 private float[] mOldScaleYs; 248 private float[] mOldBackgroundAlphas; 249 private float[] mOldAlphas; 250 private float[] mNewTranslationXs; 251 private float[] mNewTranslationYs; 252 private float[] mNewScaleXs; 253 private float[] mNewScaleYs; 254 private float[] mNewBackgroundAlphas; 255 private float[] mNewAlphas; 256 private float[] mNewRotationYs; 257 private float mTransitionProgress; 258 259 /** 260 * Used to inflate the Workspace from XML. 261 * 262 * @param context The application's context. 263 * @param attrs The attributes set containing the Workspace's customization values. 264 */ 265 public Workspace(Context context, AttributeSet attrs) { 266 this(context, attrs, 0); 267 } 268 269 /** 270 * Used to inflate the Workspace from XML. 271 * 272 * @param context The application's context. 273 * @param attrs The attributes set containing the Workspace's customization values. 274 * @param defStyle Unused. 275 */ 276 public Workspace(Context context, AttributeSet attrs, int defStyle) { 277 super(context, attrs, defStyle); 278 mContentIsRefreshable = false; 279 280 mDragEnforcer = new DropTarget.DragEnforcer(context); 281 // With workspace, data is available straight from the get-go 282 setDataIsReady(); 283 284 final Resources res = getResources(); 285 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 286 mFadeInAdjacentScreens = false; 287 mWallpaperManager = WallpaperManager.getInstance(context); 288 289 int cellCountX = DEFAULT_CELL_COUNT_X; 290 int cellCountY = DEFAULT_CELL_COUNT_Y; 291 292 TypedArray a = context.obtainStyledAttributes(attrs, 293 R.styleable.Workspace, defStyle, 0); 294 295 if (LauncherApplication.isScreenLarge()) { 296 // Determine number of rows/columns dynamically 297 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 298 // Around that ratio we should make cells the same size in portrait and 299 // landscape 300 TypedArray actionBarSizeTypedArray = 301 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 302 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 303 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 304 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 305 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 306 displayMetrics.density; 307 308 cellCountX = 1; 309 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 310 cellCountX++; 311 } 312 313 cellCountY = 1; 314 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 315 <= smallestScreenDim - systemBarHeight) { 316 cellCountY++; 317 } 318 } 319 320 mSpringLoadedShrinkFactor = 321 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 322 mSpringLoadedPageSpacing = 323 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 324 325 // if the value is manually specified, use that instead 326 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 327 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 328 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 329 a.recycle(); 330 331 setOnHierarchyChangeListener(this); 332 333 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 334 setHapticFeedbackEnabled(false); 335 336 mLauncher = (Launcher) context; 337 initWorkspace(); 338 339 // Disable multitouch across the workspace/all apps/customize tray 340 setMotionEventSplittingEnabled(true); 341 342 // Unless otherwise specified this view is important for accessibility. 343 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 344 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 345 } 346 } 347 348 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 349 // dimension if unsuccessful 350 public int[] estimateItemSize(int hSpan, int vSpan, 351 ItemInfo itemInfo, boolean springLoaded) { 352 int[] size = new int[2]; 353 if (getChildCount() > 0) { 354 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 355 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 356 size[0] = r.width(); 357 size[1] = r.height(); 358 if (springLoaded) { 359 size[0] *= mSpringLoadedShrinkFactor; 360 size[1] *= mSpringLoadedShrinkFactor; 361 } 362 return size; 363 } else { 364 size[0] = Integer.MAX_VALUE; 365 size[1] = Integer.MAX_VALUE; 366 return size; 367 } 368 } 369 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 370 int hCell, int vCell, int hSpan, int vSpan) { 371 Rect r = new Rect(); 372 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 373 return r; 374 } 375 376 public void buildPageHardwareLayers() { 377 if (getWindowToken() != null) { 378 final int childCount = getChildCount(); 379 for (int i = 0; i < childCount; i++) { 380 CellLayout cl = (CellLayout) getChildAt(i); 381 cl.getShortcutsAndWidgets().buildLayer(); 382 } 383 } 384 } 385 386 public void onDragStart(DragSource source, Object info, int dragAction) { 387 mIsDragOccuring = true; 388 updateChildrenLayersEnabled(); 389 mLauncher.lockScreenOrientation(); 390 setChildrenBackgroundAlphaMultipliers(1f); 391 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 392 InstallShortcutReceiver.enableInstallQueue(); 393 UninstallShortcutReceiver.enableUninstallQueue(); 394 } 395 396 public void onDragEnd() { 397 mIsDragOccuring = false; 398 updateChildrenLayersEnabled(); 399 mLauncher.unlockScreenOrientation(false); 400 401 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 402 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 403 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 404 } 405 406 /** 407 * Initializes various states for this workspace. 408 */ 409 protected void initWorkspace() { 410 Context context = getContext(); 411 mCurrentPage = mDefaultPage; 412 Launcher.setScreen(mCurrentPage); 413 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 414 mIconCache = app.getIconCache(); 415 setWillNotDraw(false); 416 setChildrenDrawnWithCacheEnabled(true); 417 418 final Resources res = getResources(); 419 try { 420 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 421 } catch (Resources.NotFoundException e) { 422 // In this case, we will skip drawing background protection 423 } 424 425 mWallpaperOffset = new WallpaperOffsetInterpolator(); 426 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 427 display.getSize(mDisplaySize); 428 mWallpaperTravelWidth = (int) (mDisplaySize.x * 429 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 430 431 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 432 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 433 } 434 435 @Override 436 protected int getScrollMode() { 437 return SmoothPagedView.X_LARGE_MODE; 438 } 439 440 @Override 441 public void onChildViewAdded(View parent, View child) { 442 if (!(child instanceof CellLayout)) { 443 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 444 } 445 CellLayout cl = ((CellLayout) child); 446 cl.setOnInterceptTouchListener(this); 447 cl.setClickable(true); 448 cl.enableHardwareLayers(); 449 cl.setContentDescription(getContext().getString( 450 R.string.workspace_description_format, getChildCount())); 451 } 452 453 @Override 454 public void onChildViewRemoved(View parent, View child) { 455 } 456 457 protected boolean shouldDrawChild(View child) { 458 final CellLayout cl = (CellLayout) child; 459 return super.shouldDrawChild(child) && 460 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 461 cl.getBackgroundAlpha() > 0); 462 } 463 464 /** 465 * @return The open folder on the current screen, or null if there is none 466 */ 467 Folder getOpenFolder() { 468 DragLayer dragLayer = mLauncher.getDragLayer(); 469 int count = dragLayer.getChildCount(); 470 for (int i = 0; i < count; i++) { 471 View child = dragLayer.getChildAt(i); 472 if (child instanceof Folder) { 473 Folder folder = (Folder) child; 474 if (folder.getInfo().opened) 475 return folder; 476 } 477 } 478 return null; 479 } 480 481 boolean isTouchActive() { 482 return mTouchState != TOUCH_STATE_REST; 483 } 484 485 /** 486 * Adds the specified child in the specified screen. The position and dimension of 487 * the child are defined by x, y, spanX and spanY. 488 * 489 * @param child The child to add in one of the workspace's screens. 490 * @param screen The screen in which to add the child. 491 * @param x The X position of the child in the screen's grid. 492 * @param y The Y position of the child in the screen's grid. 493 * @param spanX The number of cells spanned horizontally by the child. 494 * @param spanY The number of cells spanned vertically by the child. 495 */ 496 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 497 addInScreen(child, container, screen, x, y, spanX, spanY, false); 498 } 499 500 /** 501 * Adds the specified child in the specified screen. The position and dimension of 502 * the child are defined by x, y, spanX and spanY. 503 * 504 * @param child The child to add in one of the workspace's screens. 505 * @param screen The screen in which to add the child. 506 * @param x The X position of the child in the screen's grid. 507 * @param y The Y position of the child in the screen's grid. 508 * @param spanX The number of cells spanned horizontally by the child. 509 * @param spanY The number of cells spanned vertically by the child. 510 * @param insert When true, the child is inserted at the beginning of the children list. 511 */ 512 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 513 boolean insert) { 514 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 515 if (screen < 0 || screen >= getChildCount()) { 516 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 517 + " (was " + screen + "); skipping child"); 518 return; 519 } 520 } 521 522 final CellLayout layout; 523 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 524 layout = mLauncher.getHotseat().getLayout(); 525 child.setOnKeyListener(null); 526 527 // Hide folder title in the hotseat 528 if (child instanceof FolderIcon) { 529 ((FolderIcon) child).setTextVisible(false); 530 } 531 532 if (screen < 0) { 533 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 534 } else { 535 // Note: We do this to ensure that the hotseat is always laid out in the orientation 536 // of the hotseat in order regardless of which orientation they were added 537 x = mLauncher.getHotseat().getCellXFromOrder(screen); 538 y = mLauncher.getHotseat().getCellYFromOrder(screen); 539 } 540 } else { 541 // Show folder title if not in the hotseat 542 if (child instanceof FolderIcon) { 543 ((FolderIcon) child).setTextVisible(true); 544 } 545 546 layout = (CellLayout) getChildAt(screen); 547 child.setOnKeyListener(new IconKeyEventListener()); 548 } 549 550 LayoutParams genericLp = child.getLayoutParams(); 551 CellLayout.LayoutParams lp; 552 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 553 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 554 } else { 555 lp = (CellLayout.LayoutParams) genericLp; 556 lp.cellX = x; 557 lp.cellY = y; 558 lp.cellHSpan = spanX; 559 lp.cellVSpan = spanY; 560 } 561 562 if (spanX < 0 && spanY < 0) { 563 lp.isLockedToGrid = false; 564 } 565 566 // Get the canonical child id to uniquely represent this view in this screen 567 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 568 boolean markCellsAsOccupied = !(child instanceof Folder); 569 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 570 // TODO: This branch occurs when the workspace is adding views 571 // outside of the defined grid 572 // maybe we should be deleting these items from the LauncherModel? 573 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 574 } 575 576 if (!(child instanceof Folder)) { 577 child.setHapticFeedbackEnabled(false); 578 child.setOnLongClickListener(mLongClickListener); 579 } 580 if (child instanceof DropTarget) { 581 mDragController.addDropTarget((DropTarget) child); 582 } 583 } 584 585 /** 586 * Check if the point (x, y) hits a given page. 587 */ 588 private boolean hitsPage(int index, float x, float y) { 589 final View page = getChildAt(index); 590 if (page != null) { 591 float[] localXY = { x, y }; 592 mapPointFromSelfToChild(page, localXY); 593 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 594 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 595 } 596 return false; 597 } 598 599 @Override 600 protected boolean hitsPreviousPage(float x, float y) { 601 // mNextPage is set to INVALID_PAGE whenever we are stationary. 602 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 603 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 604 605 // Only allow tap to next page on large devices, where there's significant margin outside 606 // the active workspace 607 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 608 } 609 610 @Override 611 protected boolean hitsNextPage(float x, float y) { 612 // mNextPage is set to INVALID_PAGE whenever we are stationary. 613 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 614 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 615 616 // Only allow tap to next page on large devices, where there's significant margin outside 617 // the active workspace 618 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 619 } 620 621 /** 622 * Called directly from a CellLayout (not by the framework), after we've been added as a 623 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 624 * that it should intercept touch events, which is not something that is normally supported. 625 */ 626 @Override 627 public boolean onTouch(View v, MotionEvent event) { 628 return (isSmall() || !isFinishedSwitchingState()); 629 } 630 631 public boolean isSwitchingState() { 632 return mIsSwitchingState; 633 } 634 635 /** This differs from isSwitchingState in that we take into account how far the transition 636 * has completed. */ 637 public boolean isFinishedSwitchingState() { 638 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 639 } 640 641 protected void onWindowVisibilityChanged (int visibility) { 642 mLauncher.onWindowVisibilityChanged(visibility); 643 } 644 645 @Override 646 public boolean dispatchUnhandledMove(View focused, int direction) { 647 if (isSmall() || !isFinishedSwitchingState()) { 648 // when the home screens are shrunken, shouldn't allow side-scrolling 649 return false; 650 } 651 return super.dispatchUnhandledMove(focused, direction); 652 } 653 654 @Override 655 public boolean onInterceptTouchEvent(MotionEvent ev) { 656 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 657 case MotionEvent.ACTION_DOWN: 658 mXDown = ev.getX(); 659 mYDown = ev.getY(); 660 break; 661 case MotionEvent.ACTION_POINTER_UP: 662 case MotionEvent.ACTION_UP: 663 if (mTouchState == TOUCH_STATE_REST) { 664 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 665 if (!currentPage.lastDownOnOccupiedCell()) { 666 onWallpaperTap(ev); 667 } 668 } 669 } 670 return super.onInterceptTouchEvent(ev); 671 } 672 673 protected void reinflateWidgetsIfNecessary() { 674 final int clCount = getChildCount(); 675 for (int i = 0; i < clCount; i++) { 676 CellLayout cl = (CellLayout) getChildAt(i); 677 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 678 final int itemCount = swc.getChildCount(); 679 for (int j = 0; j < itemCount; j++) { 680 View v = swc.getChildAt(j); 681 682 if (v.getTag() instanceof LauncherAppWidgetInfo) { 683 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 684 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 685 if (lahv != null && lahv.orientationChangedSincedInflation()) { 686 mLauncher.removeAppWidget(info); 687 // Remove the current widget which is inflated with the wrong orientation 688 cl.removeView(lahv); 689 mLauncher.bindAppWidget(info); 690 } 691 } 692 } 693 } 694 } 695 696 @Override 697 protected void determineScrollingStart(MotionEvent ev) { 698 if (isSmall()) return; 699 if (!isFinishedSwitchingState()) return; 700 701 float deltaX = Math.abs(ev.getX() - mXDown); 702 float deltaY = Math.abs(ev.getY() - mYDown); 703 704 if (Float.compare(deltaX, 0f) == 0) return; 705 706 float slope = deltaY / deltaX; 707 float theta = (float) Math.atan(slope); 708 709 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 710 cancelCurrentPageLongPress(); 711 } 712 713 if (theta > MAX_SWIPE_ANGLE) { 714 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 715 return; 716 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 717 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 718 // increase the touch slop to make it harder to begin scrolling the workspace. This 719 // results in vertically scrolling widgets to more easily. The higher the angle, the 720 // more we increase touch slop. 721 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 722 float extraRatio = (float) 723 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 724 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 725 } else { 726 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 727 super.determineScrollingStart(ev); 728 } 729 } 730 731 @Override 732 protected boolean isScrollingIndicatorEnabled() { 733 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 734 } 735 736 protected void onPageBeginMoving() { 737 super.onPageBeginMoving(); 738 739 if (isHardwareAccelerated()) { 740 updateChildrenLayersEnabled(); 741 } else { 742 if (mNextPage != INVALID_PAGE) { 743 // we're snapping to a particular screen 744 enableChildrenCache(mCurrentPage, mNextPage); 745 } else { 746 // this is when user is actively dragging a particular screen, they might 747 // swipe it either left or right (but we won't advance by more than one screen) 748 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 749 } 750 } 751 752 // Only show page outlines as we pan if we are on large screen 753 if (LauncherApplication.isScreenLarge()) { 754 showOutlines(); 755 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 756 } 757 758 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 759 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 760 if (!mWorkspaceFadeInAdjacentScreens) { 761 for (int i = 0; i < getChildCount(); ++i) { 762 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 763 } 764 } 765 766 // Show the scroll indicator as you pan the page 767 showScrollingIndicator(false); 768 } 769 770 protected void onPageEndMoving() { 771 super.onPageEndMoving(); 772 773 if (isHardwareAccelerated()) { 774 updateChildrenLayersEnabled(); 775 } else { 776 clearChildrenCache(); 777 } 778 779 780 if (mDragController.isDragging()) { 781 if (isSmall()) { 782 // If we are in springloaded mode, then force an event to check if the current touch 783 // is under a new page (to scroll to) 784 mDragController.forceMoveEvent(); 785 } 786 } else { 787 // If we are not mid-dragging, hide the page outlines if we are on a large screen 788 if (LauncherApplication.isScreenLarge()) { 789 hideOutlines(); 790 } 791 792 // Hide the scroll indicator as you pan the page 793 if (!mDragController.isDragging()) { 794 hideScrollingIndicator(false); 795 } 796 } 797 mOverScrollMaxBackgroundAlpha = 0.0f; 798 799 if (mDelayedResizeRunnable != null) { 800 mDelayedResizeRunnable.run(); 801 mDelayedResizeRunnable = null; 802 } 803 804 if (mDelayedSnapToPageRunnable != null) { 805 mDelayedSnapToPageRunnable.run(); 806 mDelayedSnapToPageRunnable = null; 807 } 808 } 809 810 @Override 811 protected void notifyPageSwitchListener() { 812 super.notifyPageSwitchListener(); 813 Launcher.setScreen(mCurrentPage); 814 }; 815 816 // As a ratio of screen height, the total distance we want the parallax effect to span 817 // horizontally 818 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 819 float aspectRatio = width / (float) height; 820 821 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 822 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 823 // We will use these two data points to extrapolate how much the wallpaper parallax effect 824 // to span (ie travel) at any aspect ratio: 825 826 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 827 final float ASPECT_RATIO_PORTRAIT = 10/16f; 828 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 829 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 830 831 // To find out the desired width at different aspect ratios, we use the following two 832 // formulas, where the coefficient on x is the aspect ratio (width/height): 833 // (16/10)x + y = 1.5 834 // (10/16)x + y = 1.2 835 // We solve for x and y and end up with a final formula: 836 final float x = 837 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 838 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 839 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 840 return x * aspectRatio + y; 841 } 842 843 // The range of scroll values for Workspace 844 private int getScrollRange() { 845 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 846 } 847 848 protected void setWallpaperDimension() { 849 DisplayMetrics displayMetrics = new DisplayMetrics(); 850 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 851 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 852 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 853 854 // We need to ensure that there is enough extra space in the wallpaper for the intended 855 // parallax effects 856 if (LauncherApplication.isScreenLarge()) { 857 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 858 mWallpaperHeight = maxDim; 859 } else { 860 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 861 mWallpaperHeight = maxDim; 862 } 863 new Thread("setWallpaperDimension") { 864 public void run() { 865 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 866 } 867 }.start(); 868 } 869 870 private float wallpaperOffsetForCurrentScroll() { 871 // Set wallpaper offset steps (1 / (number of screens - 1)) 872 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 873 874 // For the purposes of computing the scrollRange and overScrollOffset, we assume 875 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 876 // there's no discrepancy between the wallpaper offset for a given page. 877 float layoutScale = mLayoutScale; 878 mLayoutScale = 1f; 879 int scrollRange = getScrollRange(); 880 881 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 882 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 883 adjustedScrollX *= mWallpaperScrollRatio; 884 mLayoutScale = layoutScale; 885 886 float scrollProgress = 887 adjustedScrollX / (float) scrollRange; 888 889 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 890 // The wallpaper travel width is how far, from left to right, the wallpaper will move 891 // at this orientation. On tablets in portrait mode we don't move all the way to the 892 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 893 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 894 895 float offsetInDips = wallpaperTravelWidth * scrollProgress + 896 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 897 float offset = offsetInDips / (float) mWallpaperWidth; 898 return offset; 899 } else { 900 return scrollProgress; 901 } 902 } 903 904 private void syncWallpaperOffsetWithScroll() { 905 final boolean enableWallpaperEffects = isHardwareAccelerated(); 906 if (enableWallpaperEffects) { 907 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 908 } 909 } 910 911 public void updateWallpaperOffsetImmediately() { 912 mUpdateWallpaperOffsetImmediately = true; 913 } 914 915 private void updateWallpaperOffsets() { 916 boolean updateNow = false; 917 boolean keepUpdating = true; 918 if (mUpdateWallpaperOffsetImmediately) { 919 updateNow = true; 920 keepUpdating = false; 921 mWallpaperOffset.jumpToFinal(); 922 mUpdateWallpaperOffsetImmediately = false; 923 } else { 924 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 925 } 926 if (updateNow) { 927 if (mWindowToken != null) { 928 mWallpaperManager.setWallpaperOffsets(mWindowToken, 929 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 930 } 931 } 932 if (keepUpdating) { 933 invalidate(); 934 } 935 } 936 937 @Override 938 protected void updateCurrentPageScroll() { 939 super.updateCurrentPageScroll(); 940 computeWallpaperScrollRatio(mCurrentPage); 941 } 942 943 @Override 944 protected void snapToPage(int whichPage) { 945 super.snapToPage(whichPage); 946 computeWallpaperScrollRatio(whichPage); 947 } 948 949 @Override 950 protected void snapToPage(int whichPage, int duration) { 951 super.snapToPage(whichPage, duration); 952 computeWallpaperScrollRatio(whichPage); 953 } 954 955 protected void snapToPage(int whichPage, Runnable r) { 956 if (mDelayedSnapToPageRunnable != null) { 957 mDelayedSnapToPageRunnable.run(); 958 } 959 mDelayedSnapToPageRunnable = r; 960 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 961 } 962 963 private void computeWallpaperScrollRatio(int page) { 964 // Here, we determine what the desired scroll would be with and without a layout scale, 965 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 966 // as though there is no layout scale. 967 float layoutScale = mLayoutScale; 968 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 969 mLayoutScale = 1.0f; 970 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 971 mLayoutScale = layoutScale; 972 if (scaled > 0) { 973 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 974 } else { 975 mWallpaperScrollRatio = 1f; 976 } 977 } 978 979 class WallpaperOffsetInterpolator { 980 float mFinalHorizontalWallpaperOffset = 0.0f; 981 float mFinalVerticalWallpaperOffset = 0.5f; 982 float mHorizontalWallpaperOffset = 0.0f; 983 float mVerticalWallpaperOffset = 0.5f; 984 long mLastWallpaperOffsetUpdateTime; 985 boolean mIsMovingFast; 986 boolean mOverrideHorizontalCatchupConstant; 987 float mHorizontalCatchupConstant = 0.35f; 988 float mVerticalCatchupConstant = 0.35f; 989 990 public WallpaperOffsetInterpolator() { 991 } 992 993 public void setOverrideHorizontalCatchupConstant(boolean override) { 994 mOverrideHorizontalCatchupConstant = override; 995 } 996 997 public void setHorizontalCatchupConstant(float f) { 998 mHorizontalCatchupConstant = f; 999 } 1000 1001 public void setVerticalCatchupConstant(float f) { 1002 mVerticalCatchupConstant = f; 1003 } 1004 1005 public boolean computeScrollOffset() { 1006 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 1007 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 1008 mIsMovingFast = false; 1009 return false; 1010 } 1011 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 1012 1013 long currentTime = System.currentTimeMillis(); 1014 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 1015 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1016 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1017 1018 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1019 if (!mIsMovingFast && xdiff > 0.07) { 1020 mIsMovingFast = true; 1021 } 1022 1023 float fractionToCatchUpIn1MsHorizontal; 1024 if (mOverrideHorizontalCatchupConstant) { 1025 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1026 } else if (mIsMovingFast) { 1027 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1028 } else { 1029 // slow 1030 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1031 } 1032 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1033 1034 fractionToCatchUpIn1MsHorizontal /= 33f; 1035 fractionToCatchUpIn1MsVertical /= 33f; 1036 1037 final float UPDATE_THRESHOLD = 0.00001f; 1038 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1039 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1040 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1041 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1042 1043 // Don't have any lag between workspace and wallpaper on non-large devices 1044 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1045 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1046 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1047 } else { 1048 float percentToCatchUpVertical = 1049 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1050 float percentToCatchUpHorizontal = 1051 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1052 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1053 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1054 } 1055 1056 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1057 return true; 1058 } 1059 1060 public float getCurrX() { 1061 return mHorizontalWallpaperOffset; 1062 } 1063 1064 public float getFinalX() { 1065 return mFinalHorizontalWallpaperOffset; 1066 } 1067 1068 public float getCurrY() { 1069 return mVerticalWallpaperOffset; 1070 } 1071 1072 public float getFinalY() { 1073 return mFinalVerticalWallpaperOffset; 1074 } 1075 1076 public void setFinalX(float x) { 1077 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1078 } 1079 1080 public void setFinalY(float y) { 1081 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1082 } 1083 1084 public void jumpToFinal() { 1085 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1086 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1087 } 1088 } 1089 1090 @Override 1091 public void computeScroll() { 1092 super.computeScroll(); 1093 syncWallpaperOffsetWithScroll(); 1094 } 1095 1096 void showOutlines() { 1097 if (!isSmall() && !mIsSwitchingState) { 1098 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1099 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1100 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1101 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1102 mChildrenOutlineFadeInAnimation.start(); 1103 } 1104 } 1105 1106 void hideOutlines() { 1107 if (!isSmall() && !mIsSwitchingState) { 1108 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1109 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1110 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1111 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1112 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1113 mChildrenOutlineFadeOutAnimation.start(); 1114 } 1115 } 1116 1117 public void showOutlinesTemporarily() { 1118 if (!mIsPageMoving && !isTouchActive()) { 1119 snapToPage(mCurrentPage); 1120 } 1121 } 1122 1123 public void setChildrenOutlineAlpha(float alpha) { 1124 mChildrenOutlineAlpha = alpha; 1125 for (int i = 0; i < getChildCount(); i++) { 1126 CellLayout cl = (CellLayout) getChildAt(i); 1127 cl.setBackgroundAlpha(alpha); 1128 } 1129 } 1130 1131 public float getChildrenOutlineAlpha() { 1132 return mChildrenOutlineAlpha; 1133 } 1134 1135 void disableBackground() { 1136 mDrawBackground = false; 1137 } 1138 void enableBackground() { 1139 mDrawBackground = true; 1140 } 1141 1142 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1143 if (mBackground == null) return; 1144 if (mBackgroundFadeInAnimation != null) { 1145 mBackgroundFadeInAnimation.cancel(); 1146 mBackgroundFadeInAnimation = null; 1147 } 1148 if (mBackgroundFadeOutAnimation != null) { 1149 mBackgroundFadeOutAnimation.cancel(); 1150 mBackgroundFadeOutAnimation = null; 1151 } 1152 float startAlpha = getBackgroundAlpha(); 1153 if (finalAlpha != startAlpha) { 1154 if (animated) { 1155 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1156 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1157 public void onAnimationUpdate(ValueAnimator animation) { 1158 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1159 } 1160 }); 1161 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1162 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1163 mBackgroundFadeOutAnimation.start(); 1164 } else { 1165 setBackgroundAlpha(finalAlpha); 1166 } 1167 } 1168 } 1169 1170 public void setBackgroundAlpha(float alpha) { 1171 if (alpha != mBackgroundAlpha) { 1172 mBackgroundAlpha = alpha; 1173 invalidate(); 1174 } 1175 } 1176 1177 public float getBackgroundAlpha() { 1178 return mBackgroundAlpha; 1179 } 1180 1181 /** 1182 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1183 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1184 * as being larger. This method computes what offset the rotated view should be translated 1185 * in order to minimize this perceived gap. 1186 * @param degrees Angle of the view 1187 * @param width Width of the view 1188 * @param height Height of the view 1189 * @return Offset to be used in a View.setTranslationX() call 1190 */ 1191 private float getOffsetXForRotation(float degrees, int width, int height) { 1192 mMatrix.reset(); 1193 mCamera.save(); 1194 mCamera.rotateY(Math.abs(degrees)); 1195 mCamera.getMatrix(mMatrix); 1196 mCamera.restore(); 1197 1198 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1199 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1200 mTempFloat2[0] = width; 1201 mTempFloat2[1] = height; 1202 mMatrix.mapPoints(mTempFloat2); 1203 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1204 } 1205 1206 float backgroundAlphaInterpolator(float r) { 1207 float pivotA = 0.1f; 1208 float pivotB = 0.4f; 1209 if (r < pivotA) { 1210 return 0; 1211 } else if (r > pivotB) { 1212 return 1.0f; 1213 } else { 1214 return (r - pivotA)/(pivotB - pivotA); 1215 } 1216 } 1217 1218 float overScrollBackgroundAlphaInterpolator(float r) { 1219 float threshold = 0.08f; 1220 1221 if (r > mOverScrollMaxBackgroundAlpha) { 1222 mOverScrollMaxBackgroundAlpha = r; 1223 } else if (r < mOverScrollMaxBackgroundAlpha) { 1224 r = mOverScrollMaxBackgroundAlpha; 1225 } 1226 1227 return Math.min(r / threshold, 1.0f); 1228 } 1229 1230 private void updatePageAlphaValues(int screenCenter) { 1231 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1232 if (mWorkspaceFadeInAdjacentScreens && 1233 mState == State.NORMAL && 1234 !mIsSwitchingState && 1235 !isInOverscroll) { 1236 for (int i = 0; i < getChildCount(); i++) { 1237 CellLayout child = (CellLayout) getChildAt(i); 1238 if (child != null) { 1239 float scrollProgress = getScrollProgress(screenCenter, child, i); 1240 float alpha = 1 - Math.abs(scrollProgress); 1241 child.getShortcutsAndWidgets().setAlpha(alpha); 1242 if (!mIsDragOccuring) { 1243 child.setBackgroundAlphaMultiplier( 1244 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1245 } else { 1246 child.setBackgroundAlphaMultiplier(1f); 1247 } 1248 } 1249 } 1250 } 1251 } 1252 1253 private void setChildrenBackgroundAlphaMultipliers(float a) { 1254 for (int i = 0; i < getChildCount(); i++) { 1255 CellLayout child = (CellLayout) getChildAt(i); 1256 child.setBackgroundAlphaMultiplier(a); 1257 } 1258 } 1259 1260 @Override 1261 protected void screenScrolled(int screenCenter) { 1262 super.screenScrolled(screenCenter); 1263 1264 updatePageAlphaValues(screenCenter); 1265 1266 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1267 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1268 CellLayout cl = (CellLayout) getChildAt(index); 1269 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1270 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1271 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1272 cl.setRotationY(rotation); 1273 setFadeForOverScroll(Math.abs(scrollProgress)); 1274 if (!mOverscrollTransformsSet) { 1275 mOverscrollTransformsSet = true; 1276 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1277 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1278 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1279 cl.setOverscrollTransformsDirty(true); 1280 } 1281 } else { 1282 if (mOverscrollFade != 0) { 1283 setFadeForOverScroll(0); 1284 } 1285 if (mOverscrollTransformsSet) { 1286 mOverscrollTransformsSet = false; 1287 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1288 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1289 } 1290 } 1291 } 1292 1293 @Override 1294 protected void overScroll(float amount) { 1295 acceleratedOverScroll(amount); 1296 } 1297 1298 protected void onAttachedToWindow() { 1299 super.onAttachedToWindow(); 1300 mWindowToken = getWindowToken(); 1301 computeScroll(); 1302 mDragController.setWindowToken(mWindowToken); 1303 } 1304 1305 protected void onDetachedFromWindow() { 1306 mWindowToken = null; 1307 } 1308 1309 @Override 1310 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1311 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1312 mUpdateWallpaperOffsetImmediately = true; 1313 } 1314 super.onLayout(changed, left, top, right, bottom); 1315 } 1316 1317 @Override 1318 protected void onDraw(Canvas canvas) { 1319 updateWallpaperOffsets(); 1320 1321 // Draw the background gradient if necessary 1322 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1323 int alpha = (int) (mBackgroundAlpha * 255); 1324 mBackground.setAlpha(alpha); 1325 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1326 getMeasuredHeight()); 1327 mBackground.draw(canvas); 1328 } 1329 1330 super.onDraw(canvas); 1331 } 1332 1333 boolean isDrawingBackgroundGradient() { 1334 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1335 } 1336 1337 @Override 1338 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1339 if (!mLauncher.isAllAppsVisible()) { 1340 final Folder openFolder = getOpenFolder(); 1341 if (openFolder != null) { 1342 return openFolder.requestFocus(direction, previouslyFocusedRect); 1343 } else { 1344 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1345 } 1346 } 1347 return false; 1348 } 1349 1350 @Override 1351 public int getDescendantFocusability() { 1352 if (isSmall()) { 1353 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1354 } 1355 return super.getDescendantFocusability(); 1356 } 1357 1358 @Override 1359 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1360 if (!mLauncher.isAllAppsVisible()) { 1361 final Folder openFolder = getOpenFolder(); 1362 if (openFolder != null) { 1363 openFolder.addFocusables(views, direction); 1364 } else { 1365 super.addFocusables(views, direction, focusableMode); 1366 } 1367 } 1368 } 1369 1370 public boolean isSmall() { 1371 return mState == State.SMALL || mState == State.SPRING_LOADED; 1372 } 1373 1374 void enableChildrenCache(int fromPage, int toPage) { 1375 if (fromPage > toPage) { 1376 final int temp = fromPage; 1377 fromPage = toPage; 1378 toPage = temp; 1379 } 1380 1381 final int screenCount = getChildCount(); 1382 1383 fromPage = Math.max(fromPage, 0); 1384 toPage = Math.min(toPage, screenCount - 1); 1385 1386 for (int i = fromPage; i <= toPage; i++) { 1387 final CellLayout layout = (CellLayout) getChildAt(i); 1388 layout.setChildrenDrawnWithCacheEnabled(true); 1389 layout.setChildrenDrawingCacheEnabled(true); 1390 } 1391 } 1392 1393 void clearChildrenCache() { 1394 final int screenCount = getChildCount(); 1395 for (int i = 0; i < screenCount; i++) { 1396 final CellLayout layout = (CellLayout) getChildAt(i); 1397 layout.setChildrenDrawnWithCacheEnabled(false); 1398 // In software mode, we don't want the items to continue to be drawn into bitmaps 1399 if (!isHardwareAccelerated()) { 1400 layout.setChildrenDrawingCacheEnabled(false); 1401 } 1402 } 1403 } 1404 1405 private void updateChildrenLayersEnabled() { 1406 boolean small = mState == State.SMALL || mIsSwitchingState; 1407 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1408 1409 if (enableChildrenLayers != mChildrenLayersEnabled) { 1410 mChildrenLayersEnabled = enableChildrenLayers; 1411 for (int i = 0; i < getPageCount(); i++) { 1412 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1413 } 1414 } 1415 } 1416 1417 protected void onWallpaperTap(MotionEvent ev) { 1418 final int[] position = mTempCell; 1419 getLocationOnScreen(position); 1420 1421 int pointerIndex = ev.getActionIndex(); 1422 position[0] += (int) ev.getX(pointerIndex); 1423 position[1] += (int) ev.getY(pointerIndex); 1424 1425 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1426 ev.getAction() == MotionEvent.ACTION_UP 1427 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1428 position[0], position[1], 0, null); 1429 } 1430 1431 /* 1432 * This interpolator emulates the rate at which the perceived scale of an object changes 1433 * as its distance from a camera increases. When this interpolator is applied to a scale 1434 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1435 * from the camera. 1436 */ 1437 static class ZInterpolator implements TimeInterpolator { 1438 private float focalLength; 1439 1440 public ZInterpolator(float foc) { 1441 focalLength = foc; 1442 } 1443 1444 public float getInterpolation(float input) { 1445 return (1.0f - focalLength / (focalLength + input)) / 1446 (1.0f - focalLength / (focalLength + 1.0f)); 1447 } 1448 } 1449 1450 /* 1451 * The exact reverse of ZInterpolator. 1452 */ 1453 static class InverseZInterpolator implements TimeInterpolator { 1454 private ZInterpolator zInterpolator; 1455 public InverseZInterpolator(float foc) { 1456 zInterpolator = new ZInterpolator(foc); 1457 } 1458 public float getInterpolation(float input) { 1459 return 1 - zInterpolator.getInterpolation(1 - input); 1460 } 1461 } 1462 1463 /* 1464 * ZInterpolator compounded with an ease-out. 1465 */ 1466 static class ZoomOutInterpolator implements TimeInterpolator { 1467 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1468 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1469 1470 public float getInterpolation(float input) { 1471 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1472 } 1473 } 1474 1475 /* 1476 * InvereZInterpolator compounded with an ease-out. 1477 */ 1478 static class ZoomInInterpolator implements TimeInterpolator { 1479 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1480 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1481 1482 public float getInterpolation(float input) { 1483 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1484 } 1485 } 1486 1487 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1488 1489 /* 1490 * 1491 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1492 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1493 * 1494 * These methods mark the appropriate pages as accepting drops (which alters their visual 1495 * appearance). 1496 * 1497 */ 1498 public void onDragStartedWithItem(View v) { 1499 final Canvas canvas = new Canvas(); 1500 1501 // The outline is used to visualize where the item will land if dropped 1502 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1503 } 1504 1505 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1506 final Canvas canvas = new Canvas(); 1507 1508 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1509 1510 // The outline is used to visualize where the item will land if dropped 1511 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1512 size[1], alphaClipPaint); 1513 } 1514 1515 public void exitWidgetResizeMode() { 1516 DragLayer dragLayer = mLauncher.getDragLayer(); 1517 dragLayer.clearAllResizeFrames(); 1518 } 1519 1520 private void initAnimationArrays() { 1521 final int childCount = getChildCount(); 1522 if (mOldTranslationXs != null) return; 1523 mOldTranslationXs = new float[childCount]; 1524 mOldTranslationYs = new float[childCount]; 1525 mOldScaleXs = new float[childCount]; 1526 mOldScaleYs = new float[childCount]; 1527 mOldBackgroundAlphas = new float[childCount]; 1528 mOldAlphas = new float[childCount]; 1529 mNewTranslationXs = new float[childCount]; 1530 mNewTranslationYs = new float[childCount]; 1531 mNewScaleXs = new float[childCount]; 1532 mNewScaleYs = new float[childCount]; 1533 mNewBackgroundAlphas = new float[childCount]; 1534 mNewAlphas = new float[childCount]; 1535 mNewRotationYs = new float[childCount]; 1536 } 1537 1538 Animator getChangeStateAnimation(final State state, boolean animated) { 1539 return getChangeStateAnimation(state, animated, 0); 1540 } 1541 1542 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1543 if (mState == state) { 1544 return null; 1545 } 1546 1547 // Initialize animation arrays for the first time if necessary 1548 initAnimationArrays(); 1549 1550 AnimatorSet anim = animated ? new AnimatorSet() : null; 1551 1552 // Stop any scrolling, move to the current page right away 1553 setCurrentPage(getNextPage()); 1554 1555 final State oldState = mState; 1556 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1557 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1558 final boolean oldStateIsSmall = (oldState == State.SMALL); 1559 mState = state; 1560 final boolean stateIsNormal = (state == State.NORMAL); 1561 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1562 final boolean stateIsSmall = (state == State.SMALL); 1563 float finalScaleFactor = 1.0f; 1564 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1565 float translationX = 0; 1566 float translationY = 0; 1567 boolean zoomIn = true; 1568 1569 if (state != State.NORMAL) { 1570 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1571 setPageSpacing(mSpringLoadedPageSpacing); 1572 if (oldStateIsNormal && stateIsSmall) { 1573 zoomIn = false; 1574 setLayoutScale(finalScaleFactor); 1575 updateChildrenLayersEnabled(); 1576 } else { 1577 finalBackgroundAlpha = 1.0f; 1578 setLayoutScale(finalScaleFactor); 1579 } 1580 } else { 1581 setPageSpacing(PagedView.AUTOMATIC_PAGE_SPACING); 1582 setLayoutScale(1.0f); 1583 } 1584 1585 final int duration = zoomIn ? 1586 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1587 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1588 for (int i = 0; i < getChildCount(); i++) { 1589 final CellLayout cl = (CellLayout) getChildAt(i); 1590 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1591 (i == mCurrentPage)) ? 1f : 0f; 1592 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1593 float initialAlpha = currentAlpha; 1594 1595 // Determine the pages alpha during the state transition 1596 if ((oldStateIsSmall && stateIsNormal) || 1597 (oldStateIsNormal && stateIsSmall)) { 1598 // To/from workspace - only show the current page unless the transition is not 1599 // animated and the animation end callback below doesn't run; 1600 // or, if we're in spring-loaded mode 1601 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1602 finalAlpha = 1f; 1603 } else { 1604 initialAlpha = 0f; 1605 finalAlpha = 0f; 1606 } 1607 } 1608 1609 mOldAlphas[i] = initialAlpha; 1610 mNewAlphas[i] = finalAlpha; 1611 if (animated) { 1612 mOldTranslationXs[i] = cl.getTranslationX(); 1613 mOldTranslationYs[i] = cl.getTranslationY(); 1614 mOldScaleXs[i] = cl.getScaleX(); 1615 mOldScaleYs[i] = cl.getScaleY(); 1616 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1617 1618 mNewTranslationXs[i] = translationX; 1619 mNewTranslationYs[i] = translationY; 1620 mNewScaleXs[i] = finalScaleFactor; 1621 mNewScaleYs[i] = finalScaleFactor; 1622 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1623 } else { 1624 cl.setTranslationX(translationX); 1625 cl.setTranslationY(translationY); 1626 cl.setScaleX(finalScaleFactor); 1627 cl.setScaleY(finalScaleFactor); 1628 cl.setBackgroundAlpha(finalBackgroundAlpha); 1629 cl.setShortcutAndWidgetAlpha(finalAlpha); 1630 } 1631 } 1632 1633 if (animated) { 1634 for (int index = 0; index < getChildCount(); index++) { 1635 final int i = index; 1636 final CellLayout cl = (CellLayout) getChildAt(i); 1637 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1638 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1639 cl.setTranslationX(mNewTranslationXs[i]); 1640 cl.setTranslationY(mNewTranslationYs[i]); 1641 cl.setScaleX(mNewScaleXs[i]); 1642 cl.setScaleY(mNewScaleYs[i]); 1643 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1644 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1645 cl.setRotationY(mNewRotationYs[i]); 1646 } else { 1647 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1648 a.translationX(mNewTranslationXs[i]) 1649 .translationY(mNewTranslationYs[i]) 1650 .scaleX(mNewScaleXs[i]) 1651 .scaleY(mNewScaleYs[i]) 1652 .setDuration(duration) 1653 .setInterpolator(mZoomInInterpolator); 1654 anim.play(a); 1655 1656 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1657 LauncherViewPropertyAnimator alphaAnim = 1658 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1659 alphaAnim.alpha(mNewAlphas[i]) 1660 .setDuration(duration) 1661 .setInterpolator(mZoomInInterpolator); 1662 anim.play(alphaAnim); 1663 } 1664 if (mOldBackgroundAlphas[i] != 0 || 1665 mNewBackgroundAlphas[i] != 0) { 1666 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1667 bgAnim.setInterpolator(mZoomInInterpolator); 1668 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1669 public void onAnimationUpdate(float a, float b) { 1670 cl.setBackgroundAlpha( 1671 a * mOldBackgroundAlphas[i] + 1672 b * mNewBackgroundAlphas[i]); 1673 } 1674 }); 1675 anim.play(bgAnim); 1676 } 1677 } 1678 } 1679 buildPageHardwareLayers(); 1680 anim.setStartDelay(delay); 1681 } 1682 1683 if (stateIsSpringLoaded) { 1684 // Right now we're covered by Apps Customize 1685 // Show the background gradient immediately, so the gradient will 1686 // be showing once AppsCustomize disappears 1687 animateBackgroundGradient(getResources().getInteger( 1688 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1689 } else { 1690 // Fade the background gradient away 1691 animateBackgroundGradient(0f, true); 1692 } 1693 return anim; 1694 } 1695 1696 @Override 1697 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1698 mIsSwitchingState = true; 1699 cancelScrollingIndicatorAnimations(); 1700 } 1701 1702 @Override 1703 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1704 } 1705 1706 @Override 1707 public void onLauncherTransitionStep(Launcher l, float t) { 1708 mTransitionProgress = t; 1709 } 1710 1711 @Override 1712 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1713 mIsSwitchingState = false; 1714 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1715 updateChildrenLayersEnabled(); 1716 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1717 // ensure that only the current page is visible during (and subsequently, after) the 1718 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1719 // visibility after the transition animation. 1720 if (!mWorkspaceFadeInAdjacentScreens) { 1721 for (int i = 0; i < getChildCount(); i++) { 1722 final CellLayout cl = (CellLayout) getChildAt(i); 1723 cl.setShortcutAndWidgetAlpha(1f); 1724 } 1725 } 1726 } 1727 1728 @Override 1729 public View getContent() { 1730 return this; 1731 } 1732 1733 /** 1734 * Draw the View v into the given Canvas. 1735 * 1736 * @param v the view to draw 1737 * @param destCanvas the canvas to draw on 1738 * @param padding the horizontal and vertical padding to use when drawing 1739 */ 1740 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1741 final Rect clipRect = mTempRect; 1742 v.getDrawingRect(clipRect); 1743 1744 boolean textVisible = false; 1745 1746 destCanvas.save(); 1747 if (v instanceof TextView && pruneToDrawable) { 1748 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1749 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1750 destCanvas.translate(padding / 2, padding / 2); 1751 d.draw(destCanvas); 1752 } else { 1753 if (v instanceof FolderIcon) { 1754 // For FolderIcons the text can bleed into the icon area, and so we need to 1755 // hide the text completely (which can't be achieved by clipping). 1756 if (((FolderIcon) v).getTextVisible()) { 1757 ((FolderIcon) v).setTextVisible(false); 1758 textVisible = true; 1759 } 1760 } else if (v instanceof BubbleTextView) { 1761 final BubbleTextView tv = (BubbleTextView) v; 1762 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1763 tv.getLayout().getLineTop(0); 1764 } else if (v instanceof TextView) { 1765 final TextView tv = (TextView) v; 1766 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1767 tv.getLayout().getLineTop(0); 1768 } 1769 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1770 destCanvas.clipRect(clipRect, Op.REPLACE); 1771 v.draw(destCanvas); 1772 1773 // Restore text visibility of FolderIcon if necessary 1774 if (textVisible) { 1775 ((FolderIcon) v).setTextVisible(true); 1776 } 1777 } 1778 destCanvas.restore(); 1779 } 1780 1781 /** 1782 * Returns a new bitmap to show when the given View is being dragged around. 1783 * Responsibility for the bitmap is transferred to the caller. 1784 */ 1785 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1786 Bitmap b; 1787 1788 if (v instanceof TextView) { 1789 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1790 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1791 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1792 } else { 1793 b = Bitmap.createBitmap( 1794 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1795 } 1796 1797 canvas.setBitmap(b); 1798 drawDragView(v, canvas, padding, true); 1799 canvas.setBitmap(null); 1800 1801 return b; 1802 } 1803 1804 /** 1805 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1806 * Responsibility for the bitmap is transferred to the caller. 1807 */ 1808 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1809 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1810 final Bitmap b = Bitmap.createBitmap( 1811 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1812 1813 canvas.setBitmap(b); 1814 drawDragView(v, canvas, padding, true); 1815 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1816 canvas.setBitmap(null); 1817 return b; 1818 } 1819 1820 /** 1821 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1822 * Responsibility for the bitmap is transferred to the caller. 1823 */ 1824 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1825 Paint alphaClipPaint) { 1826 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1827 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1828 canvas.setBitmap(b); 1829 1830 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1831 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1832 (h - padding) / (float) orig.getHeight()); 1833 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1834 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1835 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1836 1837 // center the image 1838 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1839 1840 canvas.drawBitmap(orig, src, dst, null); 1841 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1842 alphaClipPaint); 1843 canvas.setBitmap(null); 1844 1845 return b; 1846 } 1847 1848 void startDrag(CellLayout.CellInfo cellInfo) { 1849 View child = cellInfo.cell; 1850 1851 // Make sure the drag was started by a long press as opposed to a long click. 1852 if (!child.isInTouchMode()) { 1853 return; 1854 } 1855 1856 mDragInfo = cellInfo; 1857 child.setVisibility(INVISIBLE); 1858 CellLayout layout = (CellLayout) child.getParent().getParent(); 1859 layout.prepareChildForDrag(child); 1860 1861 child.clearFocus(); 1862 child.setPressed(false); 1863 1864 final Canvas canvas = new Canvas(); 1865 1866 // The outline is used to visualize where the item will land if dropped 1867 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1868 beginDragShared(child, this); 1869 } 1870 1871 public void beginDragShared(View child, DragSource source) { 1872 Resources r = getResources(); 1873 1874 // The drag bitmap follows the touch point around on the screen 1875 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1876 1877 final int bmpWidth = b.getWidth(); 1878 final int bmpHeight = b.getHeight(); 1879 1880 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1881 int dragLayerX = 1882 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1883 int dragLayerY = 1884 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1885 - DRAG_BITMAP_PADDING / 2); 1886 1887 Point dragVisualizeOffset = null; 1888 Rect dragRect = null; 1889 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1890 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1891 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1892 int top = child.getPaddingTop(); 1893 int left = (bmpWidth - iconSize) / 2; 1894 int right = left + iconSize; 1895 int bottom = top + iconSize; 1896 dragLayerY += top; 1897 // Note: The drag region is used to calculate drag layer offsets, but the 1898 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1899 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1900 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1901 dragRect = new Rect(left, top, right, bottom); 1902 } else if (child instanceof FolderIcon) { 1903 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1904 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1905 } 1906 1907 // Clear the pressed state if necessary 1908 if (child instanceof BubbleTextView) { 1909 BubbleTextView icon = (BubbleTextView) child; 1910 icon.clearPressedOrFocusedBackground(); 1911 } 1912 1913 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1914 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1915 b.recycle(); 1916 1917 // Show the scrolling indicator when you pick up an item 1918 showScrollingIndicator(false); 1919 } 1920 1921 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1922 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1923 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1924 1925 final int[] cellXY = new int[2]; 1926 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1927 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1928 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1929 cellXY[1]); 1930 } 1931 1932 public boolean transitionStateShouldAllowDrop() { 1933 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1934 } 1935 1936 /** 1937 * {@inheritDoc} 1938 */ 1939 public boolean acceptDrop(DragObject d) { 1940 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1941 CellLayout dropTargetLayout = mDropToLayout; 1942 if (d.dragSource != this) { 1943 // Don't accept the drop if we're not over a screen at time of drop 1944 if (dropTargetLayout == null) { 1945 return false; 1946 } 1947 if (!transitionStateShouldAllowDrop()) return false; 1948 1949 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1950 d.dragView, mDragViewVisualCenter); 1951 1952 // We want the point to be mapped to the dragTarget. 1953 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1954 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1955 } else { 1956 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1957 } 1958 1959 int spanX = 1; 1960 int spanY = 1; 1961 if (mDragInfo != null) { 1962 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1963 spanX = dragCellInfo.spanX; 1964 spanY = dragCellInfo.spanY; 1965 } else { 1966 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1967 spanX = dragInfo.spanX; 1968 spanY = dragInfo.spanY; 1969 } 1970 1971 int minSpanX = spanX; 1972 int minSpanY = spanY; 1973 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1974 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1975 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1976 } 1977 1978 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1979 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1980 mTargetCell); 1981 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 1982 mDragViewVisualCenter[1], mTargetCell); 1983 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1984 mTargetCell, distance, true)) { 1985 return true; 1986 } 1987 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1988 mTargetCell, distance)) { 1989 return true; 1990 } 1991 1992 int[] resultSpan = new int[2]; 1993 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 1994 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 1995 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 1996 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 1997 1998 // Don't accept the drop if there's no room for the item 1999 if (!foundCell) { 2000 // Don't show the message if we are dropping on the AllApps button and the hotseat 2001 // is full 2002 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2003 if (mTargetCell != null && isHotseat) { 2004 Hotseat hotseat = mLauncher.getHotseat(); 2005 if (hotseat.isAllAppsButtonRank( 2006 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2007 return false; 2008 } 2009 } 2010 2011 mLauncher.showOutOfSpaceMessage(isHotseat); 2012 return false; 2013 } 2014 } 2015 return true; 2016 } 2017 2018 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2019 distance, boolean considerTimeout) { 2020 if (distance > mMaxDistanceForFolderCreation) return false; 2021 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2022 2023 if (dropOverView != null) { 2024 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2025 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2026 return false; 2027 } 2028 } 2029 2030 boolean hasntMoved = false; 2031 if (mDragInfo != null) { 2032 hasntMoved = dropOverView == mDragInfo.cell; 2033 } 2034 2035 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2036 return false; 2037 } 2038 2039 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2040 boolean willBecomeShortcut = 2041 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2042 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2043 2044 return (aboveShortcut && willBecomeShortcut); 2045 } 2046 2047 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2048 float distance) { 2049 if (distance > mMaxDistanceForFolderCreation) return false; 2050 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2051 2052 if (dropOverView != null) { 2053 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2054 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2055 return false; 2056 } 2057 } 2058 2059 if (dropOverView instanceof FolderIcon) { 2060 FolderIcon fi = (FolderIcon) dropOverView; 2061 if (fi.acceptDrop(dragInfo)) { 2062 return true; 2063 } 2064 } 2065 return false; 2066 } 2067 2068 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2069 int[] targetCell, float distance, boolean external, DragView dragView, 2070 Runnable postAnimationRunnable) { 2071 if (distance > mMaxDistanceForFolderCreation) return false; 2072 View v = target.getChildAt(targetCell[0], targetCell[1]); 2073 2074 boolean hasntMoved = false; 2075 if (mDragInfo != null) { 2076 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2077 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2078 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2079 } 2080 2081 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2082 mCreateUserFolderOnDrop = false; 2083 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2084 2085 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2086 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2087 2088 if (aboveShortcut && willBecomeShortcut) { 2089 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2090 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2091 // if the drag started here, we need to remove it from the workspace 2092 if (!external) { 2093 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2094 } 2095 2096 Rect folderLocation = new Rect(); 2097 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2098 target.removeView(v); 2099 2100 FolderIcon fi = 2101 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2102 destInfo.cellX = -1; 2103 destInfo.cellY = -1; 2104 sourceInfo.cellX = -1; 2105 sourceInfo.cellY = -1; 2106 2107 // If the dragView is null, we can't animate 2108 boolean animate = dragView != null; 2109 if (animate) { 2110 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2111 postAnimationRunnable); 2112 } else { 2113 fi.addItem(destInfo); 2114 fi.addItem(sourceInfo); 2115 } 2116 return true; 2117 } 2118 return false; 2119 } 2120 2121 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2122 float distance, DragObject d, boolean external) { 2123 if (distance > mMaxDistanceForFolderCreation) return false; 2124 2125 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2126 if (!mAddToExistingFolderOnDrop) return false; 2127 mAddToExistingFolderOnDrop = false; 2128 2129 if (dropOverView instanceof FolderIcon) { 2130 FolderIcon fi = (FolderIcon) dropOverView; 2131 if (fi.acceptDrop(d.dragInfo)) { 2132 fi.onDrop(d); 2133 2134 // if the drag started here, we need to remove it from the workspace 2135 if (!external) { 2136 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2137 } 2138 return true; 2139 } 2140 } 2141 return false; 2142 } 2143 2144 public void onDrop(final DragObject d) { 2145 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2146 mDragViewVisualCenter); 2147 2148 CellLayout dropTargetLayout = mDropToLayout; 2149 2150 // We want the point to be mapped to the dragTarget. 2151 if (dropTargetLayout != null) { 2152 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2153 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2154 } else { 2155 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2156 } 2157 } 2158 2159 int snapScreen = -1; 2160 boolean resizeOnDrop = false; 2161 if (d.dragSource != this) { 2162 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2163 (int) mDragViewVisualCenter[1] }; 2164 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2165 } else if (mDragInfo != null) { 2166 final View cell = mDragInfo.cell; 2167 2168 Runnable resizeRunnable = null; 2169 if (dropTargetLayout != null) { 2170 // Move internally 2171 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2172 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2173 long container = hasMovedIntoHotseat ? 2174 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2175 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2176 int screen = (mTargetCell[0] < 0) ? 2177 mDragInfo.screen : indexOfChild(dropTargetLayout); 2178 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2179 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2180 // First we find the cell nearest to point at which the item is 2181 // dropped, without any consideration to whether there is an item there. 2182 2183 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2184 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2185 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2186 mDragViewVisualCenter[1], mTargetCell); 2187 2188 // If the item being dropped is a shortcut and the nearest drop 2189 // cell also contains a shortcut, then create a folder with the two shortcuts. 2190 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2191 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2192 return; 2193 } 2194 2195 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2196 distance, d, false)) { 2197 return; 2198 } 2199 2200 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2201 // we need to find the nearest cell location that is vacant 2202 ItemInfo item = (ItemInfo) d.dragInfo; 2203 int minSpanX = item.spanX; 2204 int minSpanY = item.spanY; 2205 if (item.minSpanX > 0 && item.minSpanY > 0) { 2206 minSpanX = item.minSpanX; 2207 minSpanY = item.minSpanY; 2208 } 2209 2210 int[] resultSpan = new int[2]; 2211 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2212 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2213 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2214 2215 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2216 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2217 resizeOnDrop = true; 2218 item.spanX = resultSpan[0]; 2219 item.spanY = resultSpan[1]; 2220 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2221 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2222 resultSpan[1]); 2223 } 2224 2225 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2226 snapScreen = screen; 2227 snapToPage(screen); 2228 } 2229 2230 if (foundCell) { 2231 final ItemInfo info = (ItemInfo) cell.getTag(); 2232 if (hasMovedLayouts) { 2233 // Reparent the view 2234 getParentCellLayoutForView(cell).removeView(cell); 2235 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2236 info.spanX, info.spanY); 2237 } 2238 2239 // update the item's position after drop 2240 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2241 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2242 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2243 lp.cellHSpan = item.spanX; 2244 lp.cellVSpan = item.spanY; 2245 lp.isLockedToGrid = true; 2246 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2247 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2248 2249 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2250 cell instanceof LauncherAppWidgetHostView) { 2251 final CellLayout cellLayout = dropTargetLayout; 2252 // We post this call so that the widget has a chance to be placed 2253 // in its final location 2254 2255 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2256 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2257 if (pinfo != null && 2258 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2259 final Runnable addResizeFrame = new Runnable() { 2260 public void run() { 2261 DragLayer dragLayer = mLauncher.getDragLayer(); 2262 dragLayer.addResizeFrame(info, hostView, cellLayout); 2263 } 2264 }; 2265 resizeRunnable = (new Runnable() { 2266 public void run() { 2267 if (!isPageMoving()) { 2268 addResizeFrame.run(); 2269 } else { 2270 mDelayedResizeRunnable = addResizeFrame; 2271 } 2272 } 2273 }); 2274 } 2275 } 2276 2277 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2278 lp.cellY); 2279 } else { 2280 // If we can't find a drop location, we return the item to its original position 2281 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2282 mTargetCell[0] = lp.cellX; 2283 mTargetCell[1] = lp.cellY; 2284 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2285 layout.markCellsAsOccupiedForView(cell); 2286 } 2287 } 2288 2289 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2290 final Runnable finalResizeRunnable = resizeRunnable; 2291 // Prepare it to be animated into its new position 2292 // This must be called after the view has been re-parented 2293 final Runnable onCompleteRunnable = new Runnable() { 2294 @Override 2295 public void run() { 2296 mAnimatingViewIntoPlace = false; 2297 updateChildrenLayersEnabled(); 2298 if (finalResizeRunnable != null) { 2299 finalResizeRunnable.run(); 2300 } 2301 } 2302 }; 2303 mAnimatingViewIntoPlace = true; 2304 if (d.dragView.hasDrawn()) { 2305 final ItemInfo info = (ItemInfo) cell.getTag(); 2306 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2307 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2308 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2309 animateWidgetDrop(info, parent, d.dragView, 2310 onCompleteRunnable, animationType, cell, false); 2311 } else { 2312 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2313 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2314 onCompleteRunnable, this); 2315 } 2316 } else { 2317 d.deferDragViewCleanupPostAnimation = false; 2318 cell.setVisibility(VISIBLE); 2319 } 2320 parent.onDropChild(cell); 2321 } 2322 } 2323 2324 public void setFinalScrollForPageChange(int screen) { 2325 if (screen >= 0) { 2326 mSavedScrollX = getScrollX(); 2327 CellLayout cl = (CellLayout) getChildAt(screen); 2328 mSavedTranslationX = cl.getTranslationX(); 2329 mSavedRotationY = cl.getRotationY(); 2330 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2331 setScrollX(newX); 2332 cl.setTranslationX(0f); 2333 cl.setRotationY(0f); 2334 } 2335 } 2336 2337 public void resetFinalScrollForPageChange(int screen) { 2338 if (screen >= 0) { 2339 CellLayout cl = (CellLayout) getChildAt(screen); 2340 setScrollX(mSavedScrollX); 2341 cl.setTranslationX(mSavedTranslationX); 2342 cl.setRotationY(mSavedRotationY); 2343 } 2344 } 2345 2346 public void getViewLocationRelativeToSelf(View v, int[] location) { 2347 getLocationInWindow(location); 2348 int x = location[0]; 2349 int y = location[1]; 2350 2351 v.getLocationInWindow(location); 2352 int vX = location[0]; 2353 int vY = location[1]; 2354 2355 location[0] = vX - x; 2356 location[1] = vY - y; 2357 } 2358 2359 public void onDragEnter(DragObject d) { 2360 mDragEnforcer.onDragEnter(); 2361 mCreateUserFolderOnDrop = false; 2362 mAddToExistingFolderOnDrop = false; 2363 2364 mDropToLayout = null; 2365 CellLayout layout = getCurrentDropLayout(); 2366 setCurrentDropLayout(layout); 2367 setCurrentDragOverlappingLayout(layout); 2368 2369 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2370 // don't need to show the outlines 2371 if (LauncherApplication.isScreenLarge()) { 2372 showOutlines(); 2373 } 2374 } 2375 2376 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2377 Resources res = launcher.getResources(); 2378 Display display = launcher.getWindowManager().getDefaultDisplay(); 2379 Point smallestSize = new Point(); 2380 Point largestSize = new Point(); 2381 display.getCurrentSizeRange(smallestSize, largestSize); 2382 if (orientation == CellLayout.LANDSCAPE) { 2383 if (mLandscapeCellLayoutMetrics == null) { 2384 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2385 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2386 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2387 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2388 int width = largestSize.x - paddingLeft - paddingRight; 2389 int height = smallestSize.y - paddingTop - paddingBottom; 2390 mLandscapeCellLayoutMetrics = new Rect(); 2391 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2392 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2393 orientation); 2394 } 2395 return mLandscapeCellLayoutMetrics; 2396 } else if (orientation == CellLayout.PORTRAIT) { 2397 if (mPortraitCellLayoutMetrics == null) { 2398 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2399 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2400 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2401 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2402 int width = smallestSize.x - paddingLeft - paddingRight; 2403 int height = largestSize.y - paddingTop - paddingBottom; 2404 mPortraitCellLayoutMetrics = new Rect(); 2405 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2406 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2407 orientation); 2408 } 2409 return mPortraitCellLayoutMetrics; 2410 } 2411 return null; 2412 } 2413 2414 public void onDragExit(DragObject d) { 2415 mDragEnforcer.onDragExit(); 2416 2417 // Here we store the final page that will be dropped to, if the workspace in fact 2418 // receives the drop 2419 if (mInScrollArea) { 2420 mDropToLayout = mDragOverlappingLayout; 2421 } else { 2422 mDropToLayout = mDragTargetLayout; 2423 } 2424 2425 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2426 mCreateUserFolderOnDrop = true; 2427 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2428 mAddToExistingFolderOnDrop = true; 2429 } 2430 2431 // Reset the scroll area and previous drag target 2432 onResetScrollArea(); 2433 setCurrentDropLayout(null); 2434 setCurrentDragOverlappingLayout(null); 2435 2436 mSpringLoadedDragController.cancel(); 2437 2438 if (!mIsPageMoving) { 2439 hideOutlines(); 2440 } 2441 } 2442 2443 void setCurrentDropLayout(CellLayout layout) { 2444 if (mDragTargetLayout != null) { 2445 mDragTargetLayout.revertTempState(); 2446 mDragTargetLayout.onDragExit(); 2447 } 2448 mDragTargetLayout = layout; 2449 if (mDragTargetLayout != null) { 2450 mDragTargetLayout.onDragEnter(); 2451 } 2452 cleanupReorder(true); 2453 cleanupFolderCreation(); 2454 setCurrentDropOverCell(-1, -1); 2455 } 2456 2457 void setCurrentDragOverlappingLayout(CellLayout layout) { 2458 if (mDragOverlappingLayout != null) { 2459 mDragOverlappingLayout.setIsDragOverlapping(false); 2460 } 2461 mDragOverlappingLayout = layout; 2462 if (mDragOverlappingLayout != null) { 2463 mDragOverlappingLayout.setIsDragOverlapping(true); 2464 } 2465 invalidate(); 2466 } 2467 2468 void setCurrentDropOverCell(int x, int y) { 2469 if (x != mDragOverX || y != mDragOverY) { 2470 mDragOverX = x; 2471 mDragOverY = y; 2472 setDragMode(DRAG_MODE_NONE); 2473 } 2474 } 2475 2476 void setDragMode(int dragMode) { 2477 if (dragMode != mDragMode) { 2478 if (dragMode == DRAG_MODE_NONE) { 2479 cleanupAddToFolder(); 2480 // We don't want to cancel the re-order alarm every time the target cell changes 2481 // as this feels to slow / unresponsive. 2482 cleanupReorder(false); 2483 cleanupFolderCreation(); 2484 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2485 cleanupReorder(true); 2486 cleanupFolderCreation(); 2487 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2488 cleanupAddToFolder(); 2489 cleanupReorder(true); 2490 } else if (dragMode == DRAG_MODE_REORDER) { 2491 cleanupAddToFolder(); 2492 cleanupFolderCreation(); 2493 } 2494 mDragMode = dragMode; 2495 } 2496 } 2497 2498 private void cleanupFolderCreation() { 2499 if (mDragFolderRingAnimator != null) { 2500 mDragFolderRingAnimator.animateToNaturalState(); 2501 } 2502 mFolderCreationAlarm.cancelAlarm(); 2503 } 2504 2505 private void cleanupAddToFolder() { 2506 if (mDragOverFolderIcon != null) { 2507 mDragOverFolderIcon.onDragExit(null); 2508 mDragOverFolderIcon = null; 2509 } 2510 } 2511 2512 private void cleanupReorder(boolean cancelAlarm) { 2513 // Any pending reorders are canceled 2514 if (cancelAlarm) { 2515 mReorderAlarm.cancelAlarm(); 2516 } 2517 mLastReorderX = -1; 2518 mLastReorderY = -1; 2519 } 2520 2521 public DropTarget getDropTargetDelegate(DragObject d) { 2522 return null; 2523 } 2524 2525 /* 2526 * 2527 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2528 * coordinate space. The argument xy is modified with the return result. 2529 * 2530 */ 2531 void mapPointFromSelfToChild(View v, float[] xy) { 2532 mapPointFromSelfToChild(v, xy, null); 2533 } 2534 2535 /* 2536 * 2537 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2538 * coordinate space. The argument xy is modified with the return result. 2539 * 2540 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2541 * computing it itself; we use this to avoid redundant matrix inversions in 2542 * findMatchingPageForDragOver 2543 * 2544 */ 2545 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2546 if (cachedInverseMatrix == null) { 2547 v.getMatrix().invert(mTempInverseMatrix); 2548 cachedInverseMatrix = mTempInverseMatrix; 2549 } 2550 int scrollX = getScrollX(); 2551 if (mNextPage != INVALID_PAGE) { 2552 scrollX = mScroller.getFinalX(); 2553 } 2554 xy[0] = xy[0] + scrollX - v.getLeft(); 2555 xy[1] = xy[1] + getScrollY() - v.getTop(); 2556 cachedInverseMatrix.mapPoints(xy); 2557 } 2558 2559 /* 2560 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2561 * covers the full screen) 2562 */ 2563 void mapPointFromSelfToSibling(View v, float[] xy) { 2564 xy[0] = xy[0] - v.getLeft(); 2565 xy[1] = xy[1] - v.getTop(); 2566 } 2567 2568 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2569 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2570 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2571 } 2572 2573 /* 2574 * 2575 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2576 * the parent View's coordinate space. The argument xy is modified with the return result. 2577 * 2578 */ 2579 void mapPointFromChildToSelf(View v, float[] xy) { 2580 v.getMatrix().mapPoints(xy); 2581 int scrollX = getScrollX(); 2582 if (mNextPage != INVALID_PAGE) { 2583 scrollX = mScroller.getFinalX(); 2584 } 2585 xy[0] -= (scrollX - v.getLeft()); 2586 xy[1] -= (getScrollY() - v.getTop()); 2587 } 2588 2589 static private float squaredDistance(float[] point1, float[] point2) { 2590 float distanceX = point1[0] - point2[0]; 2591 float distanceY = point2[1] - point2[1]; 2592 return distanceX * distanceX + distanceY * distanceY; 2593 } 2594 2595 /* 2596 * 2597 * Returns true if the passed CellLayout cl overlaps with dragView 2598 * 2599 */ 2600 boolean overlaps(CellLayout cl, DragView dragView, 2601 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2602 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2603 final float[] draggedItemTopLeft = mTempDragCoordinates; 2604 draggedItemTopLeft[0] = dragViewX; 2605 draggedItemTopLeft[1] = dragViewY; 2606 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2607 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2608 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2609 2610 // Transform the dragged item's top left coordinates 2611 // to the CellLayout's local coordinates 2612 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2613 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2614 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2615 2616 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2617 // Transform the dragged item's bottom right coordinates 2618 // to the CellLayout's local coordinates 2619 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2620 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2621 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2622 2623 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2624 float overlap = (overlapRegionRight - overlapRegionLeft) * 2625 (overlapRegionBottom - overlapRegionTop); 2626 if (overlap > 0) { 2627 return true; 2628 } 2629 } 2630 } 2631 return false; 2632 } 2633 2634 /* 2635 * 2636 * This method returns the CellLayout that is currently being dragged to. In order to drag 2637 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2638 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2639 * 2640 * Return null if no CellLayout is currently being dragged over 2641 * 2642 */ 2643 private CellLayout findMatchingPageForDragOver( 2644 DragView dragView, float originX, float originY, boolean exact) { 2645 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2646 // with the item being dragged and then choose the one that's closest to the touch point 2647 final int screenCount = getChildCount(); 2648 CellLayout bestMatchingScreen = null; 2649 float smallestDistSoFar = Float.MAX_VALUE; 2650 2651 for (int i = 0; i < screenCount; i++) { 2652 CellLayout cl = (CellLayout) getChildAt(i); 2653 2654 final float[] touchXy = {originX, originY}; 2655 // Transform the touch coordinates to the CellLayout's local coordinates 2656 // If the touch point is within the bounds of the cell layout, we can return immediately 2657 cl.getMatrix().invert(mTempInverseMatrix); 2658 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2659 2660 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2661 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2662 return cl; 2663 } 2664 2665 if (!exact) { 2666 // Get the center of the cell layout in screen coordinates 2667 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2668 cellLayoutCenter[0] = cl.getWidth()/2; 2669 cellLayoutCenter[1] = cl.getHeight()/2; 2670 mapPointFromChildToSelf(cl, cellLayoutCenter); 2671 2672 touchXy[0] = originX; 2673 touchXy[1] = originY; 2674 2675 // Calculate the distance between the center of the CellLayout 2676 // and the touch point 2677 float dist = squaredDistance(touchXy, cellLayoutCenter); 2678 2679 if (dist < smallestDistSoFar) { 2680 smallestDistSoFar = dist; 2681 bestMatchingScreen = cl; 2682 } 2683 } 2684 } 2685 return bestMatchingScreen; 2686 } 2687 2688 // This is used to compute the visual center of the dragView. This point is then 2689 // used to visualize drop locations and determine where to drop an item. The idea is that 2690 // the visual center represents the user's interpretation of where the item is, and hence 2691 // is the appropriate point to use when determining drop location. 2692 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2693 DragView dragView, float[] recycle) { 2694 float res[]; 2695 if (recycle == null) { 2696 res = new float[2]; 2697 } else { 2698 res = recycle; 2699 } 2700 2701 // First off, the drag view has been shifted in a way that is not represented in the 2702 // x and y values or the x/yOffsets. Here we account for that shift. 2703 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2704 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2705 2706 // These represent the visual top and left of drag view if a dragRect was provided. 2707 // If a dragRect was not provided, then they correspond to the actual view left and 2708 // top, as the dragRect is in that case taken to be the entire dragView. 2709 // R.dimen.dragViewOffsetY. 2710 int left = x - xOffset; 2711 int top = y - yOffset; 2712 2713 // In order to find the visual center, we shift by half the dragRect 2714 res[0] = left + dragView.getDragRegion().width() / 2; 2715 res[1] = top + dragView.getDragRegion().height() / 2; 2716 2717 return res; 2718 } 2719 2720 private boolean isDragWidget(DragObject d) { 2721 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2722 d.dragInfo instanceof PendingAddWidgetInfo); 2723 } 2724 private boolean isExternalDragWidget(DragObject d) { 2725 return d.dragSource != this && isDragWidget(d); 2726 } 2727 2728 public void onDragOver(DragObject d) { 2729 // Skip drag over events while we are dragging over side pages 2730 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2731 2732 Rect r = new Rect(); 2733 CellLayout layout = null; 2734 ItemInfo item = (ItemInfo) d.dragInfo; 2735 2736 // Ensure that we have proper spans for the item that we are dropping 2737 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2738 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2739 d.dragView, mDragViewVisualCenter); 2740 2741 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2742 // Identify whether we have dragged over a side page 2743 if (isSmall()) { 2744 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2745 mLauncher.getHotseat().getHitRect(r); 2746 if (r.contains(d.x, d.y)) { 2747 layout = mLauncher.getHotseat().getLayout(); 2748 } 2749 } 2750 if (layout == null) { 2751 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2752 } 2753 if (layout != mDragTargetLayout) { 2754 2755 setCurrentDropLayout(layout); 2756 setCurrentDragOverlappingLayout(layout); 2757 2758 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2759 if (isInSpringLoadedMode) { 2760 if (mLauncher.isHotseatLayout(layout)) { 2761 mSpringLoadedDragController.cancel(); 2762 } else { 2763 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2764 } 2765 } 2766 } 2767 } else { 2768 // Test to see if we are over the hotseat otherwise just use the current page 2769 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2770 mLauncher.getHotseat().getHitRect(r); 2771 if (r.contains(d.x, d.y)) { 2772 layout = mLauncher.getHotseat().getLayout(); 2773 } 2774 } 2775 if (layout == null) { 2776 layout = getCurrentDropLayout(); 2777 } 2778 if (layout != mDragTargetLayout) { 2779 setCurrentDropLayout(layout); 2780 setCurrentDragOverlappingLayout(layout); 2781 } 2782 } 2783 2784 // Handle the drag over 2785 if (mDragTargetLayout != null) { 2786 // We want the point to be mapped to the dragTarget. 2787 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2788 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2789 } else { 2790 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2791 } 2792 2793 ItemInfo info = (ItemInfo) d.dragInfo; 2794 2795 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2796 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2797 mDragTargetLayout, mTargetCell); 2798 2799 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2800 2801 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2802 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2803 2804 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2805 mTargetCell[1]); 2806 2807 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2808 targetCellDistance, dragOverView); 2809 2810 int minSpanX = item.spanX; 2811 int minSpanY = item.spanY; 2812 if (item.minSpanX > 0 && item.minSpanY > 0) { 2813 minSpanX = item.minSpanX; 2814 minSpanY = item.minSpanY; 2815 } 2816 2817 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2818 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2819 item.spanY, child, mTargetCell); 2820 2821 if (!nearestDropOccupied) { 2822 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2823 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2824 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2825 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2826 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2827 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2828 mLastReorderY != mTargetCell[1])) { 2829 2830 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2831 // reorder, then we schedule a reorder 2832 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2833 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2834 mReorderAlarm.setOnAlarmListener(listener); 2835 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2836 } 2837 2838 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2839 !nearestDropOccupied) { 2840 if (mDragTargetLayout != null) { 2841 mDragTargetLayout.revertTempState(); 2842 } 2843 } 2844 } 2845 } 2846 2847 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2848 int[] targetCell, float distance, View dragOverView) { 2849 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2850 false); 2851 2852 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2853 !mFolderCreationAlarm.alarmPending()) { 2854 mFolderCreationAlarm.setOnAlarmListener(new 2855 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2856 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2857 return; 2858 } 2859 2860 boolean willAddToFolder = 2861 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2862 2863 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2864 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2865 mDragOverFolderIcon.onDragEnter(info); 2866 if (targetLayout != null) { 2867 targetLayout.clearDragOutlines(); 2868 } 2869 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2870 return; 2871 } 2872 2873 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2874 setDragMode(DRAG_MODE_NONE); 2875 } 2876 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2877 setDragMode(DRAG_MODE_NONE); 2878 } 2879 2880 return; 2881 } 2882 2883 class FolderCreationAlarmListener implements OnAlarmListener { 2884 CellLayout layout; 2885 int cellX; 2886 int cellY; 2887 2888 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2889 this.layout = layout; 2890 this.cellX = cellX; 2891 this.cellY = cellY; 2892 } 2893 2894 public void onAlarm(Alarm alarm) { 2895 if (mDragFolderRingAnimator == null) { 2896 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2897 } 2898 mDragFolderRingAnimator.setCell(cellX, cellY); 2899 mDragFolderRingAnimator.setCellLayout(layout); 2900 mDragFolderRingAnimator.animateToAcceptState(); 2901 layout.showFolderAccept(mDragFolderRingAnimator); 2902 layout.clearDragOutlines(); 2903 setDragMode(DRAG_MODE_CREATE_FOLDER); 2904 } 2905 } 2906 2907 class ReorderAlarmListener implements OnAlarmListener { 2908 float[] dragViewCenter; 2909 int minSpanX, minSpanY, spanX, spanY; 2910 DragView dragView; 2911 View child; 2912 2913 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2914 int spanY, DragView dragView, View child) { 2915 this.dragViewCenter = dragViewCenter; 2916 this.minSpanX = minSpanX; 2917 this.minSpanY = minSpanY; 2918 this.spanX = spanX; 2919 this.spanY = spanY; 2920 this.child = child; 2921 this.dragView = dragView; 2922 } 2923 2924 public void onAlarm(Alarm alarm) { 2925 int[] resultSpan = new int[2]; 2926 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2927 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2928 mLastReorderX = mTargetCell[0]; 2929 mLastReorderY = mTargetCell[1]; 2930 2931 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2932 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2933 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2934 2935 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2936 mDragTargetLayout.revertTempState(); 2937 } else { 2938 setDragMode(DRAG_MODE_REORDER); 2939 } 2940 2941 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2942 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2943 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2944 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2945 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2946 } 2947 } 2948 2949 @Override 2950 public void getHitRect(Rect outRect) { 2951 // We want the workspace to have the whole area of the display (it will find the correct 2952 // cell layout to drop to in the existing drag/drop logic. 2953 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2954 } 2955 2956 /** 2957 * Add the item specified by dragInfo to the given layout. 2958 * @return true if successful 2959 */ 2960 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2961 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2962 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2963 return true; 2964 } 2965 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2966 return false; 2967 } 2968 2969 private void onDropExternal(int[] touchXY, Object dragInfo, 2970 CellLayout cellLayout, boolean insertAtFirst) { 2971 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2972 } 2973 2974 /** 2975 * Drop an item that didn't originate on one of the workspace screens. 2976 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2977 * come from another app altogether. 2978 * 2979 * NOTE: This can also be called when we are outside of a drag event, when we want 2980 * to add an item to one of the workspace screens. 2981 */ 2982 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2983 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2984 final Runnable exitSpringLoadedRunnable = new Runnable() { 2985 @Override 2986 public void run() { 2987 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2988 } 2989 }; 2990 2991 ItemInfo info = (ItemInfo) dragInfo; 2992 int spanX = info.spanX; 2993 int spanY = info.spanY; 2994 if (mDragInfo != null) { 2995 spanX = mDragInfo.spanX; 2996 spanY = mDragInfo.spanY; 2997 } 2998 2999 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3000 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3001 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3002 final int screen = indexOfChild(cellLayout); 3003 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3004 && mState != State.SPRING_LOADED) { 3005 snapToPage(screen); 3006 } 3007 3008 if (info instanceof PendingAddItemInfo) { 3009 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3010 3011 boolean findNearestVacantCell = true; 3012 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3013 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3014 cellLayout, mTargetCell); 3015 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3016 mDragViewVisualCenter[1], mTargetCell); 3017 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3018 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3019 cellLayout, mTargetCell, distance)) { 3020 findNearestVacantCell = false; 3021 } 3022 } 3023 3024 final ItemInfo item = (ItemInfo) d.dragInfo; 3025 if (findNearestVacantCell) { 3026 int minSpanX = item.spanX; 3027 int minSpanY = item.spanY; 3028 if (item.minSpanX > 0 && item.minSpanY > 0) { 3029 minSpanX = item.minSpanX; 3030 minSpanY = item.minSpanY; 3031 } 3032 int[] resultSpan = new int[2]; 3033 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3034 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3035 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3036 item.spanX = resultSpan[0]; 3037 item.spanY = resultSpan[1]; 3038 } 3039 3040 Runnable onAnimationCompleteRunnable = new Runnable() { 3041 @Override 3042 public void run() { 3043 // When dragging and dropping from customization tray, we deal with creating 3044 // widgets/shortcuts/folders in a slightly different way 3045 switch (pendingInfo.itemType) { 3046 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3047 int span[] = new int[2]; 3048 span[0] = item.spanX; 3049 span[1] = item.spanY; 3050 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3051 container, screen, mTargetCell, span, null); 3052 break; 3053 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3054 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3055 container, screen, mTargetCell, null); 3056 break; 3057 default: 3058 throw new IllegalStateException("Unknown item type: " + 3059 pendingInfo.itemType); 3060 } 3061 } 3062 }; 3063 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3064 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3065 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3066 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3067 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3068 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3069 } 3070 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3071 animationStyle, finalView, true); 3072 } else { 3073 // This is for other drag/drop cases, like dragging from All Apps 3074 View view = null; 3075 3076 switch (info.itemType) { 3077 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3078 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3079 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3080 // Came from all apps -- make a copy 3081 info = new ShortcutInfo((ApplicationInfo) info); 3082 } 3083 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3084 (ShortcutInfo) info); 3085 break; 3086 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3087 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3088 (FolderInfo) info, mIconCache); 3089 break; 3090 default: 3091 throw new IllegalStateException("Unknown item type: " + info.itemType); 3092 } 3093 3094 // First we find the cell nearest to point at which the item is 3095 // dropped, without any consideration to whether there is an item there. 3096 if (touchXY != null) { 3097 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3098 cellLayout, mTargetCell); 3099 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3100 mDragViewVisualCenter[1], mTargetCell); 3101 d.postAnimationRunnable = exitSpringLoadedRunnable; 3102 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3103 true, d.dragView, d.postAnimationRunnable)) { 3104 return; 3105 } 3106 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3107 true)) { 3108 return; 3109 } 3110 } 3111 3112 if (touchXY != null) { 3113 // when dragging and dropping, just find the closest free spot 3114 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3115 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3116 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3117 } else { 3118 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3119 } 3120 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3121 info.spanY, insertAtFirst); 3122 cellLayout.onDropChild(view); 3123 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3124 cellLayout.getShortcutsAndWidgets().measureChild(view); 3125 3126 3127 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3128 lp.cellX, lp.cellY); 3129 3130 if (d.dragView != null) { 3131 // We wrap the animation call in the temporary set and reset of the current 3132 // cellLayout to its final transform -- this means we animate the drag view to 3133 // the correct final location. 3134 setFinalTransitionTransform(cellLayout); 3135 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3136 exitSpringLoadedRunnable); 3137 resetTransitionTransform(cellLayout); 3138 } 3139 } 3140 } 3141 3142 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3143 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3144 widgetInfo.spanY, widgetInfo, false); 3145 int visibility = layout.getVisibility(); 3146 layout.setVisibility(VISIBLE); 3147 3148 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3149 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3150 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3151 Bitmap.Config.ARGB_8888); 3152 Canvas c = new Canvas(b); 3153 3154 layout.measure(width, height); 3155 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3156 layout.draw(c); 3157 c.setBitmap(null); 3158 layout.setVisibility(visibility); 3159 return b; 3160 } 3161 3162 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3163 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3164 boolean external, boolean scale) { 3165 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3166 // location and size on the home screen. 3167 int spanX = info.spanX; 3168 int spanY = info.spanY; 3169 3170 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3171 loc[0] = r.left; 3172 loc[1] = r.top; 3173 3174 setFinalTransitionTransform(layout); 3175 float cellLayoutScale = 3176 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3177 resetTransitionTransform(layout); 3178 3179 float dragViewScaleX; 3180 float dragViewScaleY; 3181 if (scale) { 3182 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3183 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3184 } else { 3185 dragViewScaleX = 1f; 3186 dragViewScaleY = 1f; 3187 } 3188 3189 // The animation will scale the dragView about its center, so we need to center about 3190 // the final location. 3191 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3192 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3193 3194 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3195 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3196 } 3197 3198 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3199 final Runnable onCompleteRunnable, int animationType, final View finalView, 3200 boolean external) { 3201 Rect from = new Rect(); 3202 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3203 3204 int[] finalPos = new int[2]; 3205 float scaleXY[] = new float[2]; 3206 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3207 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3208 external, scalePreview); 3209 3210 Resources res = mLauncher.getResources(); 3211 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3212 3213 // In the case where we've prebound the widget, we remove it from the DragLayer 3214 if (finalView instanceof AppWidgetHostView && external) { 3215 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3216 mLauncher.getDragLayer().removeView(finalView); 3217 } 3218 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3219 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3220 dragView.setCrossFadeBitmap(crossFadeBitmap); 3221 dragView.crossFade((int) (duration * 0.8f)); 3222 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3223 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3224 } 3225 3226 DragLayer dragLayer = mLauncher.getDragLayer(); 3227 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3228 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3229 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3230 } else { 3231 int endStyle; 3232 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3233 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3234 } else { 3235 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3236 } 3237 3238 Runnable onComplete = new Runnable() { 3239 @Override 3240 public void run() { 3241 if (finalView != null) { 3242 finalView.setVisibility(VISIBLE); 3243 } 3244 if (onCompleteRunnable != null) { 3245 onCompleteRunnable.run(); 3246 } 3247 } 3248 }; 3249 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3250 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3251 duration, this); 3252 } 3253 } 3254 3255 public void setFinalTransitionTransform(CellLayout layout) { 3256 if (isSwitchingState()) { 3257 int index = indexOfChild(layout); 3258 mCurrentScaleX = layout.getScaleX(); 3259 mCurrentScaleY = layout.getScaleY(); 3260 mCurrentTranslationX = layout.getTranslationX(); 3261 mCurrentTranslationY = layout.getTranslationY(); 3262 mCurrentRotationY = layout.getRotationY(); 3263 layout.setScaleX(mNewScaleXs[index]); 3264 layout.setScaleY(mNewScaleYs[index]); 3265 layout.setTranslationX(mNewTranslationXs[index]); 3266 layout.setTranslationY(mNewTranslationYs[index]); 3267 layout.setRotationY(mNewRotationYs[index]); 3268 } 3269 } 3270 public void resetTransitionTransform(CellLayout layout) { 3271 if (isSwitchingState()) { 3272 mCurrentScaleX = layout.getScaleX(); 3273 mCurrentScaleY = layout.getScaleY(); 3274 mCurrentTranslationX = layout.getTranslationX(); 3275 mCurrentTranslationY = layout.getTranslationY(); 3276 mCurrentRotationY = layout.getRotationY(); 3277 layout.setScaleX(mCurrentScaleX); 3278 layout.setScaleY(mCurrentScaleY); 3279 layout.setTranslationX(mCurrentTranslationX); 3280 layout.setTranslationY(mCurrentTranslationY); 3281 layout.setRotationY(mCurrentRotationY); 3282 } 3283 } 3284 3285 /** 3286 * Return the current {@link CellLayout}, correctly picking the destination 3287 * screen while a scroll is in progress. 3288 */ 3289 public CellLayout getCurrentDropLayout() { 3290 return (CellLayout) getChildAt(getNextPage()); 3291 } 3292 3293 /** 3294 * Return the current CellInfo describing our current drag; this method exists 3295 * so that Launcher can sync this object with the correct info when the activity is created/ 3296 * destroyed 3297 * 3298 */ 3299 public CellLayout.CellInfo getDragInfo() { 3300 return mDragInfo; 3301 } 3302 3303 /** 3304 * Calculate the nearest cell where the given object would be dropped. 3305 * 3306 * pixelX and pixelY should be in the coordinate system of layout 3307 */ 3308 private int[] findNearestArea(int pixelX, int pixelY, 3309 int spanX, int spanY, CellLayout layout, int[] recycle) { 3310 return layout.findNearestArea( 3311 pixelX, pixelY, spanX, spanY, recycle); 3312 } 3313 3314 void setup(DragController dragController) { 3315 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3316 mDragController = dragController; 3317 3318 // hardware layers on children are enabled on startup, but should be disabled until 3319 // needed 3320 updateChildrenLayersEnabled(); 3321 setWallpaperDimension(); 3322 } 3323 3324 /** 3325 * Called at the end of a drag which originated on the workspace. 3326 */ 3327 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3328 boolean success) { 3329 if (success) { 3330 if (target != this) { 3331 if (mDragInfo != null) { 3332 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3333 if (mDragInfo.cell instanceof DropTarget) { 3334 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3335 } 3336 } 3337 } 3338 } else if (mDragInfo != null) { 3339 CellLayout cellLayout; 3340 if (mLauncher.isHotseatLayout(target)) { 3341 cellLayout = mLauncher.getHotseat().getLayout(); 3342 } else { 3343 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3344 } 3345 cellLayout.onDropChild(mDragInfo.cell); 3346 } 3347 if (d.cancelled && mDragInfo.cell != null) { 3348 mDragInfo.cell.setVisibility(VISIBLE); 3349 } 3350 mDragOutline = null; 3351 mDragInfo = null; 3352 3353 // Hide the scrolling indicator after you pick up an item 3354 hideScrollingIndicator(false); 3355 } 3356 3357 void updateItemLocationsInDatabase(CellLayout cl) { 3358 int count = cl.getShortcutsAndWidgets().getChildCount(); 3359 3360 int screen = indexOfChild(cl); 3361 int container = Favorites.CONTAINER_DESKTOP; 3362 3363 if (mLauncher.isHotseatLayout(cl)) { 3364 screen = -1; 3365 container = Favorites.CONTAINER_HOTSEAT; 3366 } 3367 3368 for (int i = 0; i < count; i++) { 3369 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3370 ItemInfo info = (ItemInfo) v.getTag(); 3371 // Null check required as the AllApps button doesn't have an item info 3372 if (info != null) { 3373 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3374 info.cellY, info.spanX, info.spanY); 3375 } 3376 } 3377 } 3378 3379 @Override 3380 public boolean supportsFlingToDelete() { 3381 return true; 3382 } 3383 3384 @Override 3385 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3386 // Do nothing 3387 } 3388 3389 @Override 3390 public void onFlingToDeleteCompleted() { 3391 // Do nothing 3392 } 3393 3394 public boolean isDropEnabled() { 3395 return true; 3396 } 3397 3398 @Override 3399 protected void onRestoreInstanceState(Parcelable state) { 3400 super.onRestoreInstanceState(state); 3401 Launcher.setScreen(mCurrentPage); 3402 } 3403 3404 @Override 3405 public void scrollLeft() { 3406 if (!isSmall() && !mIsSwitchingState) { 3407 super.scrollLeft(); 3408 } 3409 Folder openFolder = getOpenFolder(); 3410 if (openFolder != null) { 3411 openFolder.completeDragExit(); 3412 } 3413 } 3414 3415 @Override 3416 public void scrollRight() { 3417 if (!isSmall() && !mIsSwitchingState) { 3418 super.scrollRight(); 3419 } 3420 Folder openFolder = getOpenFolder(); 3421 if (openFolder != null) { 3422 openFolder.completeDragExit(); 3423 } 3424 } 3425 3426 @Override 3427 public boolean onEnterScrollArea(int x, int y, int direction) { 3428 // Ignore the scroll area if we are dragging over the hot seat 3429 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3430 if (mLauncher.getHotseat() != null && isPortrait) { 3431 Rect r = new Rect(); 3432 mLauncher.getHotseat().getHitRect(r); 3433 if (r.contains(x, y)) { 3434 return false; 3435 } 3436 } 3437 3438 boolean result = false; 3439 if (!isSmall() && !mIsSwitchingState) { 3440 mInScrollArea = true; 3441 3442 final int page = getNextPage() + 3443 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3444 3445 // We always want to exit the current layout to ensure parity of enter / exit 3446 setCurrentDropLayout(null); 3447 3448 if (0 <= page && page < getChildCount()) { 3449 CellLayout layout = (CellLayout) getChildAt(page); 3450 setCurrentDragOverlappingLayout(layout); 3451 3452 // Workspace is responsible for drawing the edge glow on adjacent pages, 3453 // so we need to redraw the workspace when this may have changed. 3454 invalidate(); 3455 result = true; 3456 } 3457 } 3458 return result; 3459 } 3460 3461 @Override 3462 public boolean onExitScrollArea() { 3463 boolean result = false; 3464 if (mInScrollArea) { 3465 invalidate(); 3466 CellLayout layout = getCurrentDropLayout(); 3467 setCurrentDropLayout(layout); 3468 setCurrentDragOverlappingLayout(layout); 3469 3470 result = true; 3471 mInScrollArea = false; 3472 } 3473 return result; 3474 } 3475 3476 private void onResetScrollArea() { 3477 setCurrentDragOverlappingLayout(null); 3478 mInScrollArea = false; 3479 } 3480 3481 /** 3482 * Returns a specific CellLayout 3483 */ 3484 CellLayout getParentCellLayoutForView(View v) { 3485 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3486 for (CellLayout layout : layouts) { 3487 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3488 return layout; 3489 } 3490 } 3491 return null; 3492 } 3493 3494 /** 3495 * Returns a list of all the CellLayouts in the workspace. 3496 */ 3497 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3498 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3499 int screenCount = getChildCount(); 3500 for (int screen = 0; screen < screenCount; screen++) { 3501 layouts.add(((CellLayout) getChildAt(screen))); 3502 } 3503 if (mLauncher.getHotseat() != null) { 3504 layouts.add(mLauncher.getHotseat().getLayout()); 3505 } 3506 return layouts; 3507 } 3508 3509 /** 3510 * We should only use this to search for specific children. Do not use this method to modify 3511 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3512 * the hotseat and workspace pages 3513 */ 3514 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3515 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3516 new ArrayList<ShortcutAndWidgetContainer>(); 3517 int screenCount = getChildCount(); 3518 for (int screen = 0; screen < screenCount; screen++) { 3519 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3520 } 3521 if (mLauncher.getHotseat() != null) { 3522 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3523 } 3524 return childrenLayouts; 3525 } 3526 3527 public Folder getFolderForTag(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 instanceof Folder) { 3535 Folder f = (Folder) child; 3536 if (f.getInfo() == tag && f.getInfo().opened) { 3537 return f; 3538 } 3539 } 3540 } 3541 } 3542 return null; 3543 } 3544 3545 public View getViewForTag(Object tag) { 3546 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3547 getAllShortcutAndWidgetContainers(); 3548 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3549 int count = layout.getChildCount(); 3550 for (int i = 0; i < count; i++) { 3551 View child = layout.getChildAt(i); 3552 if (child.getTag() == tag) { 3553 return child; 3554 } 3555 } 3556 } 3557 return null; 3558 } 3559 3560 void clearDropTargets() { 3561 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3562 getAllShortcutAndWidgetContainers(); 3563 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3564 int childCount = layout.getChildCount(); 3565 for (int j = 0; j < childCount; j++) { 3566 View v = layout.getChildAt(j); 3567 if (v instanceof DropTarget) { 3568 mDragController.removeDropTarget((DropTarget) v); 3569 } 3570 } 3571 } 3572 } 3573 3574 void removeItems(final ArrayList<ApplicationInfo> apps) { 3575 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3576 3577 final HashSet<String> packageNames = new HashSet<String>(); 3578 final int appCount = apps.size(); 3579 for (int i = 0; i < appCount; i++) { 3580 packageNames.add(apps.get(i).componentName.getPackageName()); 3581 } 3582 3583 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3584 for (final CellLayout layoutParent: cellLayouts) { 3585 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3586 3587 // Avoid ANRs by treating each screen separately 3588 post(new Runnable() { 3589 public void run() { 3590 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3591 childrenToRemove.clear(); 3592 3593 int childCount = layout.getChildCount(); 3594 for (int j = 0; j < childCount; j++) { 3595 final View view = layout.getChildAt(j); 3596 Object tag = view.getTag(); 3597 3598 if (tag instanceof ShortcutInfo) { 3599 final ShortcutInfo info = (ShortcutInfo) tag; 3600 final Intent intent = info.intent; 3601 final ComponentName name = intent.getComponent(); 3602 3603 if (name != null) { 3604 if (packageNames.contains(name.getPackageName())) { 3605 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3606 childrenToRemove.add(view); 3607 } 3608 } 3609 } else if (tag instanceof FolderInfo) { 3610 final FolderInfo info = (FolderInfo) tag; 3611 final ArrayList<ShortcutInfo> contents = info.contents; 3612 final int contentsCount = contents.size(); 3613 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3614 new ArrayList<ShortcutInfo>(); 3615 3616 for (int k = 0; k < contentsCount; k++) { 3617 final ShortcutInfo appInfo = contents.get(k); 3618 final Intent intent = appInfo.intent; 3619 final ComponentName name = intent.getComponent(); 3620 3621 if (name != null) { 3622 if (packageNames.contains(name.getPackageName())) { 3623 appsToRemoveFromFolder.add(appInfo); 3624 } 3625 } 3626 } 3627 for (ShortcutInfo item: appsToRemoveFromFolder) { 3628 info.remove(item); 3629 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3630 } 3631 } else if (tag instanceof LauncherAppWidgetInfo) { 3632 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3633 final ComponentName provider = info.providerName; 3634 if (provider != null) { 3635 if (packageNames.contains(provider.getPackageName())) { 3636 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3637 childrenToRemove.add(view); 3638 } 3639 } 3640 } 3641 } 3642 3643 childCount = childrenToRemove.size(); 3644 for (int j = 0; j < childCount; j++) { 3645 View child = childrenToRemove.get(j); 3646 // Note: We can not remove the view directly from CellLayoutChildren as this 3647 // does not re-mark the spaces as unoccupied. 3648 layoutParent.removeViewInLayout(child); 3649 if (child instanceof DropTarget) { 3650 mDragController.removeDropTarget((DropTarget)child); 3651 } 3652 } 3653 3654 if (childCount > 0) { 3655 layout.requestLayout(); 3656 layout.invalidate(); 3657 } 3658 } 3659 }); 3660 } 3661 3662 // It is no longer the case the BubbleTextViews correspond 1:1 with the workspace items in 3663 // the database (and LauncherModel) since shortcuts are not added and animated in until 3664 // the user returns to launcher. As a result, we really should be cleaning up the Db 3665 // regardless of whether the item was added or not (unlike the logic above). This is only 3666 // relevant for direct workspace items. 3667 post(new Runnable() { 3668 @Override 3669 public void run() { 3670 String spKey = LauncherApplication.getSharedPreferencesKey(); 3671 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3672 Context.MODE_PRIVATE); 3673 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3674 null); 3675 3676 for (String packageName: packageNames) { 3677 // Remove all items that have the same package, but were not removed above 3678 ArrayList<ShortcutInfo> infos = 3679 mLauncher.getModel().getShortcutInfosForPackage(packageName); 3680 for (ShortcutInfo info : infos) { 3681 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3682 } 3683 // Remove all queued items that match the same package 3684 if (newApps != null) { 3685 for (String intentStr : newApps) { 3686 try { 3687 Intent intent = Intent.parseUri(intentStr, 0); 3688 String pn = ItemInfo.getPackageName(intent); 3689 if (packageNames.contains(pn)) { 3690 newApps.remove(intentStr); 3691 } 3692 } catch (URISyntaxException e) {} 3693 } 3694 } 3695 } 3696 } 3697 }); 3698 } 3699 3700 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3701 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3702 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3703 int childCount = layout.getChildCount(); 3704 for (int j = 0; j < childCount; j++) { 3705 final View view = layout.getChildAt(j); 3706 Object tag = view.getTag(); 3707 if (tag instanceof ShortcutInfo) { 3708 ShortcutInfo info = (ShortcutInfo) tag; 3709 // We need to check for ACTION_MAIN otherwise getComponent() might 3710 // return null for some shortcuts (for instance, for shortcuts to 3711 // web pages.) 3712 final Intent intent = info.intent; 3713 final ComponentName name = intent.getComponent(); 3714 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3715 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3716 final int appCount = apps.size(); 3717 for (int k = 0; k < appCount; k++) { 3718 ApplicationInfo app = apps.get(k); 3719 if (app.componentName.equals(name)) { 3720 BubbleTextView shortcut = (BubbleTextView) view; 3721 info.updateIcon(mIconCache); 3722 info.title = app.title.toString(); 3723 shortcut.applyFromShortcutInfo(info, mIconCache); 3724 } 3725 } 3726 } 3727 } 3728 } 3729 } 3730 } 3731 3732 void moveToDefaultScreen(boolean animate) { 3733 if (!isSmall()) { 3734 if (animate) { 3735 snapToPage(mDefaultPage); 3736 } else { 3737 setCurrentPage(mDefaultPage); 3738 } 3739 } 3740 getChildAt(mDefaultPage).requestFocus(); 3741 } 3742 3743 @Override 3744 public void syncPages() { 3745 } 3746 3747 @Override 3748 public void syncPageItems(int page, boolean immediate) { 3749 } 3750 3751 @Override 3752 protected String getCurrentPageDescription() { 3753 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3754 return String.format(getContext().getString(R.string.workspace_scroll_format), 3755 page + 1, getChildCount()); 3756 } 3757 3758 public void getLocationInDragLayer(int[] loc) { 3759 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3760 } 3761 3762 void setFadeForOverScroll(float fade) { 3763 if (!isScrollingIndicatorEnabled()) return; 3764 3765 mOverscrollFade = fade; 3766 float reducedFade = 0.5f + 0.5f * (1 - fade); 3767 final ViewGroup parent = (ViewGroup) getParent(); 3768 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3769 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3770 final View scrollIndicator = getScrollingIndicator(); 3771 3772 cancelScrollingIndicatorAnimations(); 3773 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3774 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3775 scrollIndicator.setAlpha(1 - fade); 3776 } 3777} 3778