Workspace.java revision 452b4db5ce5206f050733a39fe95acad11617814
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_ROTATION = 12.5f; 80 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 81 private static float CAMERA_DISTANCE = 6500; 82 83 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 84 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 85 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 86 87 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 88 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 89 private static final int FLING_THRESHOLD_VELOCITY = 500; 90 91 private float mMaxDistanceForFolderCreation; 92 93 // These animators are used to fade the children's outlines 94 private ObjectAnimator mChildrenOutlineFadeInAnimation; 95 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 96 private float mChildrenOutlineAlpha = 0; 97 98 // These properties refer to the background protection gradient used for AllApps and Customize 99 private ValueAnimator mBackgroundFadeInAnimation; 100 private ValueAnimator mBackgroundFadeOutAnimation; 101 private Drawable mBackground; 102 boolean mDrawBackground = true; 103 private float mBackgroundAlpha = 0; 104 private float mOverScrollMaxBackgroundAlpha = 0.0f; 105 private int mOverScrollPageIndex = -1; 106 107 private float mWallpaperScrollRatio = 1.0f; 108 109 private final WallpaperManager mWallpaperManager; 110 private IBinder mWindowToken; 111 private static final float WALLPAPER_SCREENS_SPAN = 2f; 112 113 private int mDefaultPage; 114 115 /** 116 * CellInfo for the cell that is currently being dragged 117 */ 118 private CellLayout.CellInfo mDragInfo; 119 120 /** 121 * Target drop area calculated during last acceptDrop call. 122 */ 123 private int[] mTargetCell = new int[2]; 124 private int mDragOverX = -1; 125 private int mDragOverY = -1; 126 127 static Rect mLandscapeCellLayoutMetrics = null; 128 static Rect mPortraitCellLayoutMetrics = null; 129 130 /** 131 * The CellLayout that is currently being dragged over 132 */ 133 private CellLayout mDragTargetLayout = null; 134 /** 135 * The CellLayout that we will show as glowing 136 */ 137 private CellLayout mDragOverlappingLayout = null; 138 139 /** 140 * The CellLayout which will be dropped to 141 */ 142 private CellLayout mDropToLayout = null; 143 144 private Launcher mLauncher; 145 private IconCache mIconCache; 146 private DragController mDragController; 147 148 // These are temporary variables to prevent having to allocate a new object just to 149 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 150 private int[] mTempCell = new int[2]; 151 private int[] mTempEstimate = new int[2]; 152 private float[] mDragViewVisualCenter = new float[2]; 153 private float[] mTempDragCoordinates = new float[2]; 154 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 155 private float[] mTempDragBottomRightCoordinates = new float[2]; 156 private Matrix mTempInverseMatrix = new Matrix(); 157 158 private SpringLoadedDragController mSpringLoadedDragController; 159 private float mSpringLoadedShrinkFactor; 160 161 private static final int DEFAULT_CELL_COUNT_X = 4; 162 private static final int DEFAULT_CELL_COUNT_Y = 4; 163 164 // State variable that indicates whether the pages are small (ie when you're 165 // in all apps or customize mode) 166 167 enum State { NORMAL, SPRING_LOADED, SMALL }; 168 private State mState = State.NORMAL; 169 private boolean mIsSwitchingState = false; 170 171 boolean mAnimatingViewIntoPlace = false; 172 boolean mIsDragOccuring = false; 173 boolean mChildrenLayersEnabled = true; 174 175 /** Is the user is dragging an item near the edge of a page? */ 176 private boolean mInScrollArea = false; 177 178 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 179 private Bitmap mDragOutline = null; 180 private final Rect mTempRect = new Rect(); 181 private final int[] mTempXY = new int[2]; 182 private float mOverscrollFade = 0; 183 private boolean mOverscrollTransformsSet; 184 public static final int DRAG_BITMAP_PADDING = 2; 185 186 // Camera and Matrix used to determine the final position of a neighboring CellLayout 187 private final Matrix mMatrix = new Matrix(); 188 private final Camera mCamera = new Camera(); 189 private final float mTempFloat2[] = new float[2]; 190 191 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 192 int mWallpaperWidth; 193 int mWallpaperHeight; 194 WallpaperOffsetInterpolator mWallpaperOffset; 195 boolean mUpdateWallpaperOffsetImmediately = false; 196 private Runnable mDelayedResizeRunnable; 197 private Runnable mDelayedSnapToPageRunnable; 198 private Point mDisplaySize = new Point(); 199 private boolean mIsStaticWallpaper; 200 private int mWallpaperTravelWidth; 201 202 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 203 private static final int FOLDER_CREATION_TIMEOUT = 0; 204 private static final int REORDER_TIMEOUT = 250; 205 private final Alarm mFolderCreationAlarm = new Alarm(); 206 private final Alarm mReorderAlarm = new Alarm(); 207 private FolderRingAnimator mDragFolderRingAnimator = null; 208 private FolderIcon mDragOverFolderIcon = null; 209 private boolean mCreateUserFolderOnDrop = false; 210 private boolean mAddToExistingFolderOnDrop = false; 211 private DropTarget.DragEnforcer mDragEnforcer; 212 213 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 214 private float mXDown; 215 private float mYDown; 216 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 217 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 218 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 219 220 // Relating to the animation of items being dropped externally 221 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 222 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 223 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 224 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 225 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 226 227 // Related to dragging, folder creation and reordering 228 private static final int DRAG_MODE_NONE = 0; 229 private static final int DRAG_MODE_CREATE_FOLDER = 1; 230 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 231 private static final int DRAG_MODE_REORDER = 3; 232 private int mDragMode = DRAG_MODE_NONE; 233 private int mLastReorderX = -1; 234 private int mLastReorderY = -1; 235 236 // These variables are used for storing the initial and final values during workspace animations 237 private int mSavedScrollX; 238 private float mSavedRotationY; 239 private float mSavedTranslationX; 240 private float mCurrentScaleX; 241 private float mCurrentScaleY; 242 private float mCurrentRotationY; 243 private float mCurrentTranslationX; 244 private float mCurrentTranslationY; 245 private float[] mOldTranslationXs; 246 private float[] mOldTranslationYs; 247 private float[] mOldScaleXs; 248 private float[] mOldScaleYs; 249 private float[] mOldBackgroundAlphas; 250 private float[] mOldBackgroundAlphaMultipliers; 251 private float[] mOldAlphas; 252 private float[] mOldRotationYs; 253 private float[] mNewTranslationXs; 254 private float[] mNewTranslationYs; 255 private float[] mNewScaleXs; 256 private float[] mNewScaleYs; 257 private float[] mNewBackgroundAlphas; 258 private float[] mNewBackgroundAlphaMultipliers; 259 private float[] mNewAlphas; 260 private float[] mNewRotationYs; 261 private float mTransitionProgress; 262 263 /** 264 * Used to inflate the Workspace from XML. 265 * 266 * @param context The application's context. 267 * @param attrs The attributes set containing the Workspace's customization values. 268 */ 269 public Workspace(Context context, AttributeSet attrs) { 270 this(context, attrs, 0); 271 } 272 273 /** 274 * Used to inflate the Workspace from XML. 275 * 276 * @param context The application's context. 277 * @param attrs The attributes set containing the Workspace's customization values. 278 * @param defStyle Unused. 279 */ 280 public Workspace(Context context, AttributeSet attrs, int defStyle) { 281 super(context, attrs, defStyle); 282 mContentIsRefreshable = false; 283 284 mDragEnforcer = new DropTarget.DragEnforcer(context); 285 // With workspace, data is available straight from the get-go 286 setDataIsReady(); 287 288 final Resources res = getResources(); 289 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 290 mWallpaperManager = WallpaperManager.getInstance(context); 291 292 int cellCountX = DEFAULT_CELL_COUNT_X; 293 int cellCountY = DEFAULT_CELL_COUNT_Y; 294 295 TypedArray a = context.obtainStyledAttributes(attrs, 296 R.styleable.Workspace, defStyle, 0); 297 298 if (LauncherApplication.isScreenLarge()) { 299 // Determine number of rows/columns dynamically 300 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 301 // Around that ratio we should make cells the same size in portrait and 302 // landscape 303 TypedArray actionBarSizeTypedArray = 304 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 305 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 306 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 307 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 308 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 309 displayMetrics.density; 310 311 cellCountX = 1; 312 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 313 cellCountX++; 314 } 315 316 cellCountY = 1; 317 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 318 <= smallestScreenDim - systemBarHeight) { 319 cellCountY++; 320 } 321 } 322 323 mSpringLoadedShrinkFactor = 324 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 325 326 // if the value is manually specified, use that instead 327 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 328 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 329 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 330 a.recycle(); 331 332 setOnHierarchyChangeListener(this); 333 334 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 335 setHapticFeedbackEnabled(false); 336 337 mLauncher = (Launcher) context; 338 initWorkspace(); 339 340 // Disable multitouch across the workspace/all apps/customize tray 341 setMotionEventSplittingEnabled(true); 342 } 343 344 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 345 // dimension if unsuccessful 346 public int[] estimateItemSize(int hSpan, int vSpan, 347 ItemInfo itemInfo, boolean springLoaded) { 348 int[] size = new int[2]; 349 if (getChildCount() > 0) { 350 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 351 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 352 size[0] = r.width(); 353 size[1] = r.height(); 354 if (springLoaded) { 355 size[0] *= mSpringLoadedShrinkFactor; 356 size[1] *= mSpringLoadedShrinkFactor; 357 } 358 return size; 359 } else { 360 size[0] = Integer.MAX_VALUE; 361 size[1] = Integer.MAX_VALUE; 362 return size; 363 } 364 } 365 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 366 int hCell, int vCell, int hSpan, int vSpan) { 367 Rect r = new Rect(); 368 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 369 return r; 370 } 371 372 public void buildPageHardwareLayers() { 373 if (getWindowToken() != null) { 374 final int childCount = getChildCount(); 375 for (int i = 0; i < childCount; i++) { 376 CellLayout cl = (CellLayout) getChildAt(i); 377 cl.getShortcutsAndWidgets().buildLayer(); 378 } 379 } 380 } 381 382 public void onDragStart(DragSource source, Object info, int dragAction) { 383 mIsDragOccuring = true; 384 updateChildrenLayersEnabled(); 385 mLauncher.lockScreenOrientation(); 386 387 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 388 InstallShortcutReceiver.enableInstallQueue(); 389 UninstallShortcutReceiver.enableUninstallQueue(); 390 } 391 392 public void onDragEnd() { 393 mIsDragOccuring = false; 394 updateChildrenLayersEnabled(); 395 mLauncher.unlockScreenOrientation(false); 396 397 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 398 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 399 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 400 } 401 402 /** 403 * Initializes various states for this workspace. 404 */ 405 protected void initWorkspace() { 406 Context context = getContext(); 407 mCurrentPage = mDefaultPage; 408 Launcher.setScreen(mCurrentPage); 409 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 410 mIconCache = app.getIconCache(); 411 setWillNotDraw(false); 412 setChildrenDrawnWithCacheEnabled(true); 413 414 final Resources res = getResources(); 415 try { 416 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 417 } catch (Resources.NotFoundException e) { 418 // In this case, we will skip drawing background protection 419 } 420 421 mWallpaperOffset = new WallpaperOffsetInterpolator(); 422 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 423 display.getSize(mDisplaySize); 424 mWallpaperTravelWidth = (int) (mDisplaySize.x * 425 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 426 427 mMaxDistanceForFolderCreation = (0.6f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 428 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 429 } 430 431 @Override 432 protected int getScrollMode() { 433 return SmoothPagedView.X_LARGE_MODE; 434 } 435 436 @Override 437 public void onChildViewAdded(View parent, View child) { 438 if (!(child instanceof CellLayout)) { 439 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 440 } 441 CellLayout cl = ((CellLayout) child); 442 cl.setOnInterceptTouchListener(this); 443 cl.setClickable(true); 444 cl.enableHardwareLayers(); 445 } 446 447 @Override 448 public void onChildViewRemoved(View parent, View child) { 449 } 450 451 /** 452 * @return The open folder on the current screen, or null if there is none 453 */ 454 Folder getOpenFolder() { 455 DragLayer dragLayer = mLauncher.getDragLayer(); 456 int count = dragLayer.getChildCount(); 457 for (int i = 0; i < count; i++) { 458 View child = dragLayer.getChildAt(i); 459 if (child instanceof Folder) { 460 Folder folder = (Folder) child; 461 if (folder.getInfo().opened) 462 return folder; 463 } 464 } 465 return null; 466 } 467 468 boolean isTouchActive() { 469 return mTouchState != TOUCH_STATE_REST; 470 } 471 472 /** 473 * Adds the specified child in the specified screen. The position and dimension of 474 * the child are defined by x, y, spanX and spanY. 475 * 476 * @param child The child to add in one of the workspace's screens. 477 * @param screen The screen in which to add the child. 478 * @param x The X position of the child in the screen's grid. 479 * @param y The Y position of the child in the screen's grid. 480 * @param spanX The number of cells spanned horizontally by the child. 481 * @param spanY The number of cells spanned vertically by the child. 482 */ 483 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 484 addInScreen(child, container, screen, x, y, spanX, spanY, false); 485 } 486 487 /** 488 * Adds the specified child in the specified screen. The position and dimension of 489 * the child are defined by x, y, spanX and spanY. 490 * 491 * @param child The child to add in one of the workspace's screens. 492 * @param screen The screen in which to add the child. 493 * @param x The X position of the child in the screen's grid. 494 * @param y The Y position of the child in the screen's grid. 495 * @param spanX The number of cells spanned horizontally by the child. 496 * @param spanY The number of cells spanned vertically by the child. 497 * @param insert When true, the child is inserted at the beginning of the children list. 498 */ 499 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 500 boolean insert) { 501 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 502 if (screen < 0 || screen >= getChildCount()) { 503 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 504 + " (was " + screen + "); skipping child"); 505 return; 506 } 507 } 508 509 final CellLayout layout; 510 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 511 layout = mLauncher.getHotseat().getLayout(); 512 child.setOnKeyListener(null); 513 514 // Hide folder title in the hotseat 515 if (child instanceof FolderIcon) { 516 ((FolderIcon) child).setTextVisible(false); 517 } 518 519 if (screen < 0) { 520 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 521 } else { 522 // Note: We do this to ensure that the hotseat is always laid out in the orientation 523 // of the hotseat in order regardless of which orientation they were added 524 x = mLauncher.getHotseat().getCellXFromOrder(screen); 525 y = mLauncher.getHotseat().getCellYFromOrder(screen); 526 } 527 } else { 528 // Show folder title if not in the hotseat 529 if (child instanceof FolderIcon) { 530 ((FolderIcon) child).setTextVisible(true); 531 } 532 533 layout = (CellLayout) getChildAt(screen); 534 child.setOnKeyListener(new IconKeyEventListener()); 535 } 536 537 LayoutParams genericLp = child.getLayoutParams(); 538 CellLayout.LayoutParams lp; 539 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 540 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 541 } else { 542 lp = (CellLayout.LayoutParams) genericLp; 543 lp.cellX = x; 544 lp.cellY = y; 545 lp.cellHSpan = spanX; 546 lp.cellVSpan = spanY; 547 } 548 549 if (spanX < 0 && spanY < 0) { 550 lp.isLockedToGrid = false; 551 } 552 553 // Get the canonical child id to uniquely represent this view in this screen 554 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 555 boolean markCellsAsOccupied = !(child instanceof Folder); 556 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 557 // TODO: This branch occurs when the workspace is adding views 558 // outside of the defined grid 559 // maybe we should be deleting these items from the LauncherModel? 560 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 561 } 562 563 if (!(child instanceof Folder)) { 564 child.setHapticFeedbackEnabled(false); 565 child.setOnLongClickListener(mLongClickListener); 566 } 567 if (child instanceof DropTarget) { 568 mDragController.addDropTarget((DropTarget) child); 569 } 570 } 571 572 /** 573 * Check if the point (x, y) hits a given page. 574 */ 575 private boolean hitsPage(int index, float x, float y) { 576 final View page = getChildAt(index); 577 if (page != null) { 578 float[] localXY = { x, y }; 579 mapPointFromSelfToChild(page, localXY); 580 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 581 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 582 } 583 return false; 584 } 585 586 @Override 587 protected boolean hitsPreviousPage(float x, float y) { 588 // mNextPage is set to INVALID_PAGE whenever we are stationary. 589 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 590 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 591 592 // Only allow tap to next page on large devices, where there's significant margin outside 593 // the active workspace 594 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 595 } 596 597 @Override 598 protected boolean hitsNextPage(float x, float y) { 599 // mNextPage is set to INVALID_PAGE whenever we are stationary. 600 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 601 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 602 603 // Only allow tap to next page on large devices, where there's significant margin outside 604 // the active workspace 605 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 606 } 607 608 /** 609 * Called directly from a CellLayout (not by the framework), after we've been added as a 610 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 611 * that it should intercept touch events, which is not something that is normally supported. 612 */ 613 @Override 614 public boolean onTouch(View v, MotionEvent event) { 615 return (isSmall() || !isFinishedSwitchingState()); 616 } 617 618 public boolean isSwitchingState() { 619 return mIsSwitchingState; 620 } 621 622 /** This differs from isSwitchingState in that we take into account how far the transition 623 * has completed. */ 624 public boolean isFinishedSwitchingState() { 625 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 626 } 627 628 protected void onWindowVisibilityChanged (int visibility) { 629 mLauncher.onWindowVisibilityChanged(visibility); 630 } 631 632 @Override 633 public boolean dispatchUnhandledMove(View focused, int direction) { 634 if (isSmall() || !isFinishedSwitchingState()) { 635 // when the home screens are shrunken, shouldn't allow side-scrolling 636 return false; 637 } 638 return super.dispatchUnhandledMove(focused, direction); 639 } 640 641 @Override 642 public boolean onInterceptTouchEvent(MotionEvent ev) { 643 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 644 case MotionEvent.ACTION_DOWN: 645 mXDown = ev.getX(); 646 mYDown = ev.getY(); 647 break; 648 case MotionEvent.ACTION_POINTER_UP: 649 case MotionEvent.ACTION_UP: 650 if (mTouchState == TOUCH_STATE_REST) { 651 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 652 if (!currentPage.lastDownOnOccupiedCell()) { 653 onWallpaperTap(ev); 654 } 655 } 656 } 657 return super.onInterceptTouchEvent(ev); 658 } 659 660 @Override 661 protected void determineScrollingStart(MotionEvent ev) { 662 if (isSmall()) return; 663 if (!isFinishedSwitchingState()) return; 664 665 float deltaX = Math.abs(ev.getX() - mXDown); 666 float deltaY = Math.abs(ev.getY() - mYDown); 667 668 if (Float.compare(deltaX, 0f) == 0) return; 669 670 float slope = deltaY / deltaX; 671 float theta = (float) Math.atan(slope); 672 673 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 674 cancelCurrentPageLongPress(); 675 } 676 677 if (theta > MAX_SWIPE_ANGLE) { 678 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 679 return; 680 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 681 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 682 // increase the touch slop to make it harder to begin scrolling the workspace. This 683 // results in vertically scrolling widgets to more easily. The higher the angle, the 684 // more we increase touch slop. 685 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 686 float extraRatio = (float) 687 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 688 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 689 } else { 690 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 691 super.determineScrollingStart(ev); 692 } 693 } 694 695 @Override 696 protected boolean isScrollingIndicatorEnabled() { 697 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 698 } 699 700 protected void onPageBeginMoving() { 701 super.onPageBeginMoving(); 702 703 if (isHardwareAccelerated()) { 704 updateChildrenLayersEnabled(); 705 } else { 706 if (mNextPage != INVALID_PAGE) { 707 // we're snapping to a particular screen 708 enableChildrenCache(mCurrentPage, mNextPage); 709 } else { 710 // this is when user is actively dragging a particular screen, they might 711 // swipe it either left or right (but we won't advance by more than one screen) 712 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 713 } 714 } 715 716 // Only show page outlines as we pan if we are on large screen 717 if (LauncherApplication.isScreenLarge()) { 718 showOutlines(); 719 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 720 } 721 722 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 723 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 724 if (!mFadeInAdjacentScreens) { 725 for (int i = 0; i < getChildCount(); ++i) { 726 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 727 } 728 } 729 730 // Show the scroll indicator as you pan the page 731 showScrollingIndicator(false); 732 } 733 734 protected void onPageEndMoving() { 735 super.onPageEndMoving(); 736 737 if (isHardwareAccelerated()) { 738 updateChildrenLayersEnabled(); 739 } else { 740 clearChildrenCache(); 741 } 742 743 744 if (mDragController.isDragging()) { 745 if (isSmall()) { 746 // If we are in springloaded mode, then force an event to check if the current touch 747 // is under a new page (to scroll to) 748 mDragController.forceMoveEvent(); 749 } 750 } else { 751 // If we are not mid-dragging, hide the page outlines if we are on a large screen 752 if (LauncherApplication.isScreenLarge()) { 753 hideOutlines(); 754 } 755 756 // Hide the scroll indicator as you pan the page 757 if (!mDragController.isDragging()) { 758 hideScrollingIndicator(false); 759 } 760 } 761 mOverScrollMaxBackgroundAlpha = 0.0f; 762 mOverScrollPageIndex = -1; 763 764 if (mDelayedResizeRunnable != null) { 765 mDelayedResizeRunnable.run(); 766 mDelayedResizeRunnable = null; 767 } 768 769 if (mDelayedSnapToPageRunnable != null) { 770 mDelayedSnapToPageRunnable.run(); 771 mDelayedSnapToPageRunnable = null; 772 } 773 } 774 775 @Override 776 protected void notifyPageSwitchListener() { 777 super.notifyPageSwitchListener(); 778 Launcher.setScreen(mCurrentPage); 779 }; 780 781 // As a ratio of screen height, the total distance we want the parallax effect to span 782 // horizontally 783 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 784 float aspectRatio = width / (float) height; 785 786 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 787 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 788 // We will use these two data points to extrapolate how much the wallpaper parallax effect 789 // to span (ie travel) at any aspect ratio: 790 791 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 792 final float ASPECT_RATIO_PORTRAIT = 10/16f; 793 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 794 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 795 796 // To find out the desired width at different aspect ratios, we use the following two 797 // formulas, where the coefficient on x is the aspect ratio (width/height): 798 // (16/10)x + y = 1.5 799 // (10/16)x + y = 1.2 800 // We solve for x and y and end up with a final formula: 801 final float x = 802 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 803 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 804 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 805 return x * aspectRatio + y; 806 } 807 808 // The range of scroll values for Workspace 809 private int getScrollRange() { 810 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 811 } 812 813 protected void setWallpaperDimension() { 814 DisplayMetrics displayMetrics = new DisplayMetrics(); 815 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 816 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 817 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 818 819 // We need to ensure that there is enough extra space in the wallpaper for the intended 820 // parallax effects 821 if (LauncherApplication.isScreenLarge()) { 822 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 823 mWallpaperHeight = maxDim; 824 } else { 825 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 826 mWallpaperHeight = maxDim; 827 } 828 new Thread("setWallpaperDimension") { 829 public void run() { 830 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 831 } 832 }.start(); 833 } 834 835 private float wallpaperOffsetForCurrentScroll() { 836 // Set wallpaper offset steps (1 / (number of screens - 1)) 837 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 838 839 // For the purposes of computing the scrollRange and overScrollOffset, we assume 840 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 841 // there's no discrepancy between the wallpaper offset for a given page. 842 float layoutScale = mLayoutScale; 843 mLayoutScale = 1f; 844 int scrollRange = getScrollRange(); 845 846 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 847 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 848 adjustedScrollX *= mWallpaperScrollRatio; 849 mLayoutScale = layoutScale; 850 851 float scrollProgress = 852 adjustedScrollX / (float) scrollRange; 853 854 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 855 // The wallpaper travel width is how far, from left to right, the wallpaper will move 856 // at this orientation. On tablets in portrait mode we don't move all the way to the 857 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 858 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 859 860 float offsetInDips = wallpaperTravelWidth * scrollProgress + 861 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 862 float offset = offsetInDips / (float) mWallpaperWidth; 863 return offset; 864 } else { 865 return scrollProgress; 866 } 867 } 868 869 private void syncWallpaperOffsetWithScroll() { 870 final boolean enableWallpaperEffects = isHardwareAccelerated(); 871 if (enableWallpaperEffects) { 872 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 873 } 874 } 875 876 public void updateWallpaperOffsetImmediately() { 877 mUpdateWallpaperOffsetImmediately = true; 878 } 879 880 private void updateWallpaperOffsets() { 881 boolean updateNow = false; 882 boolean keepUpdating = true; 883 if (mUpdateWallpaperOffsetImmediately) { 884 updateNow = true; 885 keepUpdating = false; 886 mWallpaperOffset.jumpToFinal(); 887 mUpdateWallpaperOffsetImmediately = false; 888 } else { 889 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 890 } 891 if (updateNow) { 892 if (mWindowToken != null) { 893 mWallpaperManager.setWallpaperOffsets(mWindowToken, 894 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 895 } 896 } 897 if (keepUpdating) { 898 invalidate(); 899 } 900 } 901 902 @Override 903 protected void updateCurrentPageScroll() { 904 super.updateCurrentPageScroll(); 905 computeWallpaperScrollRatio(mCurrentPage); 906 } 907 908 @Override 909 protected void snapToPage(int whichPage) { 910 super.snapToPage(whichPage); 911 computeWallpaperScrollRatio(whichPage); 912 } 913 914 @Override 915 protected void snapToPage(int whichPage, int duration) { 916 super.snapToPage(whichPage, duration); 917 computeWallpaperScrollRatio(whichPage); 918 } 919 920 protected void snapToPage(int whichPage, Runnable r) { 921 if (mDelayedSnapToPageRunnable != null) { 922 mDelayedSnapToPageRunnable.run(); 923 } 924 mDelayedSnapToPageRunnable = r; 925 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 926 } 927 928 private void computeWallpaperScrollRatio(int page) { 929 // Here, we determine what the desired scroll would be with and without a layout scale, 930 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 931 // as though there is no layout scale. 932 float layoutScale = mLayoutScale; 933 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 934 mLayoutScale = 1.0f; 935 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 936 mLayoutScale = layoutScale; 937 if (scaled > 0) { 938 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 939 } else { 940 mWallpaperScrollRatio = 1f; 941 } 942 } 943 944 class WallpaperOffsetInterpolator { 945 float mFinalHorizontalWallpaperOffset = 0.0f; 946 float mFinalVerticalWallpaperOffset = 0.5f; 947 float mHorizontalWallpaperOffset = 0.0f; 948 float mVerticalWallpaperOffset = 0.5f; 949 long mLastWallpaperOffsetUpdateTime; 950 boolean mIsMovingFast; 951 boolean mOverrideHorizontalCatchupConstant; 952 float mHorizontalCatchupConstant = 0.35f; 953 float mVerticalCatchupConstant = 0.35f; 954 955 public WallpaperOffsetInterpolator() { 956 } 957 958 public void setOverrideHorizontalCatchupConstant(boolean override) { 959 mOverrideHorizontalCatchupConstant = override; 960 } 961 962 public void setHorizontalCatchupConstant(float f) { 963 mHorizontalCatchupConstant = f; 964 } 965 966 public void setVerticalCatchupConstant(float f) { 967 mVerticalCatchupConstant = f; 968 } 969 970 public boolean computeScrollOffset() { 971 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 972 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 973 mIsMovingFast = false; 974 return false; 975 } 976 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 977 978 long currentTime = System.currentTimeMillis(); 979 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 980 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 981 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 982 983 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 984 if (!mIsMovingFast && xdiff > 0.07) { 985 mIsMovingFast = true; 986 } 987 988 float fractionToCatchUpIn1MsHorizontal; 989 if (mOverrideHorizontalCatchupConstant) { 990 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 991 } else if (mIsMovingFast) { 992 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 993 } else { 994 // slow 995 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 996 } 997 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 998 999 fractionToCatchUpIn1MsHorizontal /= 33f; 1000 fractionToCatchUpIn1MsVertical /= 33f; 1001 1002 final float UPDATE_THRESHOLD = 0.00001f; 1003 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1004 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1005 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1006 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1007 1008 // Don't have any lag between workspace and wallpaper on non-large devices 1009 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1010 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1011 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1012 } else { 1013 float percentToCatchUpVertical = 1014 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1015 float percentToCatchUpHorizontal = 1016 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1017 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1018 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1019 } 1020 1021 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1022 return true; 1023 } 1024 1025 public float getCurrX() { 1026 return mHorizontalWallpaperOffset; 1027 } 1028 1029 public float getFinalX() { 1030 return mFinalHorizontalWallpaperOffset; 1031 } 1032 1033 public float getCurrY() { 1034 return mVerticalWallpaperOffset; 1035 } 1036 1037 public float getFinalY() { 1038 return mFinalVerticalWallpaperOffset; 1039 } 1040 1041 public void setFinalX(float x) { 1042 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1043 } 1044 1045 public void setFinalY(float y) { 1046 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1047 } 1048 1049 public void jumpToFinal() { 1050 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1051 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1052 } 1053 } 1054 1055 @Override 1056 public void computeScroll() { 1057 super.computeScroll(); 1058 syncWallpaperOffsetWithScroll(); 1059 } 1060 1061 void showOutlines() { 1062 if (!isSmall() && !mIsSwitchingState) { 1063 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1064 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1065 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1066 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1067 mChildrenOutlineFadeInAnimation.start(); 1068 } 1069 } 1070 1071 void hideOutlines() { 1072 if (!isSmall() && !mIsSwitchingState) { 1073 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1074 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1075 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1076 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1077 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1078 mChildrenOutlineFadeOutAnimation.start(); 1079 } 1080 } 1081 1082 public void showOutlinesTemporarily() { 1083 if (!mIsPageMoving && !isTouchActive()) { 1084 snapToPage(mCurrentPage); 1085 } 1086 } 1087 1088 public void setChildrenOutlineAlpha(float alpha) { 1089 mChildrenOutlineAlpha = alpha; 1090 for (int i = 0; i < getChildCount(); i++) { 1091 CellLayout cl = (CellLayout) getChildAt(i); 1092 cl.setBackgroundAlpha(alpha); 1093 } 1094 } 1095 1096 public float getChildrenOutlineAlpha() { 1097 return mChildrenOutlineAlpha; 1098 } 1099 1100 void disableBackground() { 1101 mDrawBackground = false; 1102 } 1103 void enableBackground() { 1104 mDrawBackground = true; 1105 } 1106 1107 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1108 if (mBackground == null) return; 1109 if (mBackgroundFadeInAnimation != null) { 1110 mBackgroundFadeInAnimation.cancel(); 1111 mBackgroundFadeInAnimation = null; 1112 } 1113 if (mBackgroundFadeOutAnimation != null) { 1114 mBackgroundFadeOutAnimation.cancel(); 1115 mBackgroundFadeOutAnimation = null; 1116 } 1117 float startAlpha = getBackgroundAlpha(); 1118 if (finalAlpha != startAlpha) { 1119 if (animated) { 1120 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1121 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1122 public void onAnimationUpdate(ValueAnimator animation) { 1123 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1124 } 1125 }); 1126 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1127 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1128 mBackgroundFadeOutAnimation.start(); 1129 } else { 1130 setBackgroundAlpha(finalAlpha); 1131 } 1132 } 1133 } 1134 1135 public void setBackgroundAlpha(float alpha) { 1136 if (alpha != mBackgroundAlpha) { 1137 mBackgroundAlpha = alpha; 1138 invalidate(); 1139 } 1140 } 1141 1142 public float getBackgroundAlpha() { 1143 return mBackgroundAlpha; 1144 } 1145 1146 /** 1147 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1148 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1149 * as being larger. This method computes what offset the rotated view should be translated 1150 * in order to minimize this perceived gap. 1151 * @param degrees Angle of the view 1152 * @param width Width of the view 1153 * @param height Height of the view 1154 * @return Offset to be used in a View.setTranslationX() call 1155 */ 1156 private float getOffsetXForRotation(float degrees, int width, int height) { 1157 mMatrix.reset(); 1158 mCamera.save(); 1159 mCamera.rotateY(Math.abs(degrees)); 1160 mCamera.getMatrix(mMatrix); 1161 mCamera.restore(); 1162 1163 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1164 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1165 mTempFloat2[0] = width; 1166 mTempFloat2[1] = height; 1167 mMatrix.mapPoints(mTempFloat2); 1168 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1169 } 1170 1171 float backgroundAlphaInterpolator(float r) { 1172 float pivotA = 0.1f; 1173 float pivotB = 0.4f; 1174 if (r < pivotA) { 1175 return 0; 1176 } else if (r > pivotB) { 1177 return 1.0f; 1178 } else { 1179 return (r - pivotA)/(pivotB - pivotA); 1180 } 1181 } 1182 1183 float overScrollBackgroundAlphaInterpolator(float r) { 1184 float threshold = 0.08f; 1185 1186 if (r > mOverScrollMaxBackgroundAlpha) { 1187 mOverScrollMaxBackgroundAlpha = r; 1188 } else if (r < mOverScrollMaxBackgroundAlpha) { 1189 r = mOverScrollMaxBackgroundAlpha; 1190 } 1191 1192 return Math.min(r / threshold, 1.0f); 1193 } 1194 1195 private void screenScrolledLargeUI(int screenCenter) { 1196 if (isSwitchingState()) return; 1197 boolean isInOverscroll = false; 1198 for (int i = 0; i < getChildCount(); i++) { 1199 CellLayout cl = (CellLayout) getChildAt(i); 1200 if (cl != null) { 1201 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1202 float rotation = WORKSPACE_ROTATION * scrollProgress; 1203 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1204 1205 // If the current page (i) is being over scrolled, we use a different 1206 // set of rules for setting the background alpha multiplier. 1207 if (!isSmall()) { 1208 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1209 i == getChildCount() -1)) { 1210 isInOverscroll = true; 1211 rotation *= -1; 1212 cl.setBackgroundAlphaMultiplier( 1213 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1214 mOverScrollPageIndex = i; 1215 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1216 if (!mOverscrollTransformsSet) { 1217 mOverscrollTransformsSet = true; 1218 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1219 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1220 cl.setOverscrollTransformsDirty(true); 1221 } 1222 } else if (mOverScrollPageIndex != i) { 1223 cl.setBackgroundAlphaMultiplier( 1224 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1225 } 1226 } 1227 cl.setTranslationX(translationX); 1228 cl.setRotationY(rotation); 1229 if (mFadeInAdjacentScreens && !isSmall()) { 1230 float alpha = 1 - Math.abs(scrollProgress); 1231 cl.setShortcutAndWidgetAlpha(alpha); 1232 } 1233 } 1234 } 1235 if (mOverscrollTransformsSet && !isInOverscroll) { 1236 mOverscrollTransformsSet = false; 1237 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1238 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1239 } 1240 invalidate(); 1241 } 1242 1243 private void screenScrolledStandardUI(int screenCenter) { 1244 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1245 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1246 CellLayout cl = (CellLayout) getChildAt(index); 1247 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1248 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1249 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1250 cl.setRotationY(rotation); 1251 setFadeForOverScroll(Math.abs(scrollProgress)); 1252 if (!mOverscrollTransformsSet) { 1253 mOverscrollTransformsSet = true; 1254 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1255 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1256 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1257 cl.setOverscrollTransformsDirty(true); 1258 } 1259 } else { 1260 if (mOverscrollFade != 0) { 1261 setFadeForOverScroll(0); 1262 } 1263 if (mOverscrollTransformsSet) { 1264 mOverscrollTransformsSet = false; 1265 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1266 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1267 } 1268 } 1269 } 1270 1271 @Override 1272 protected void screenScrolled(int screenCenter) { 1273 if (LauncherApplication.isScreenLarge()) { 1274 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1275 // ourselves (for efficiency), and there are no scrolling indicators to update. 1276 screenScrolledLargeUI(screenCenter); 1277 } else { 1278 super.screenScrolled(screenCenter); 1279 screenScrolledStandardUI(screenCenter); 1280 } 1281 } 1282 1283 @Override 1284 protected void overScroll(float amount) { 1285 if (LauncherApplication.isScreenLarge()) { 1286 dampedOverScroll(amount); 1287 } else { 1288 acceleratedOverScroll(amount); 1289 } 1290 } 1291 1292 protected void onAttachedToWindow() { 1293 super.onAttachedToWindow(); 1294 mWindowToken = getWindowToken(); 1295 computeScroll(); 1296 mDragController.setWindowToken(mWindowToken); 1297 } 1298 1299 protected void onDetachedFromWindow() { 1300 mWindowToken = null; 1301 } 1302 1303 @Override 1304 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1305 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1306 mUpdateWallpaperOffsetImmediately = true; 1307 } 1308 super.onLayout(changed, left, top, right, bottom); 1309 } 1310 1311 @Override 1312 protected void onDraw(Canvas canvas) { 1313 updateWallpaperOffsets(); 1314 1315 // Draw the background gradient if necessary 1316 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1317 int alpha = (int) (mBackgroundAlpha * 255); 1318 mBackground.setAlpha(alpha); 1319 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1320 getMeasuredHeight()); 1321 mBackground.draw(canvas); 1322 } 1323 1324 super.onDraw(canvas); 1325 } 1326 1327 boolean isDrawingBackgroundGradient() { 1328 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1329 } 1330 1331 @Override 1332 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1333 if (!mLauncher.isAllAppsVisible()) { 1334 final Folder openFolder = getOpenFolder(); 1335 if (openFolder != null) { 1336 return openFolder.requestFocus(direction, previouslyFocusedRect); 1337 } else { 1338 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1339 } 1340 } 1341 return false; 1342 } 1343 1344 @Override 1345 public int getDescendantFocusability() { 1346 if (isSmall()) { 1347 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1348 } 1349 return super.getDescendantFocusability(); 1350 } 1351 1352 @Override 1353 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1354 if (!mLauncher.isAllAppsVisible()) { 1355 final Folder openFolder = getOpenFolder(); 1356 if (openFolder != null) { 1357 openFolder.addFocusables(views, direction); 1358 } else { 1359 super.addFocusables(views, direction, focusableMode); 1360 } 1361 } 1362 } 1363 1364 public boolean isSmall() { 1365 return mState == State.SMALL || mState == State.SPRING_LOADED; 1366 } 1367 1368 void enableChildrenCache(int fromPage, int toPage) { 1369 if (fromPage > toPage) { 1370 final int temp = fromPage; 1371 fromPage = toPage; 1372 toPage = temp; 1373 } 1374 1375 final int screenCount = getChildCount(); 1376 1377 fromPage = Math.max(fromPage, 0); 1378 toPage = Math.min(toPage, screenCount - 1); 1379 1380 for (int i = fromPage; i <= toPage; i++) { 1381 final CellLayout layout = (CellLayout) getChildAt(i); 1382 layout.setChildrenDrawnWithCacheEnabled(true); 1383 layout.setChildrenDrawingCacheEnabled(true); 1384 } 1385 } 1386 1387 void clearChildrenCache() { 1388 final int screenCount = getChildCount(); 1389 for (int i = 0; i < screenCount; i++) { 1390 final CellLayout layout = (CellLayout) getChildAt(i); 1391 layout.setChildrenDrawnWithCacheEnabled(false); 1392 // In software mode, we don't want the items to continue to be drawn into bitmaps 1393 if (!isHardwareAccelerated()) { 1394 layout.setChildrenDrawingCacheEnabled(false); 1395 } 1396 } 1397 } 1398 1399 private void updateChildrenLayersEnabled() { 1400 boolean small = mState == State.SMALL || mIsSwitchingState; 1401 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1402 1403 if (enableChildrenLayers != mChildrenLayersEnabled) { 1404 mChildrenLayersEnabled = enableChildrenLayers; 1405 for (int i = 0; i < getPageCount(); i++) { 1406 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1407 } 1408 } 1409 } 1410 1411 protected void onWallpaperTap(MotionEvent ev) { 1412 final int[] position = mTempCell; 1413 getLocationOnScreen(position); 1414 1415 int pointerIndex = ev.getActionIndex(); 1416 position[0] += (int) ev.getX(pointerIndex); 1417 position[1] += (int) ev.getY(pointerIndex); 1418 1419 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1420 ev.getAction() == MotionEvent.ACTION_UP 1421 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1422 position[0], position[1], 0, null); 1423 } 1424 1425 /* 1426 * This interpolator emulates the rate at which the perceived scale of an object changes 1427 * as its distance from a camera increases. When this interpolator is applied to a scale 1428 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1429 * from the camera. 1430 */ 1431 static class ZInterpolator implements TimeInterpolator { 1432 private float focalLength; 1433 1434 public ZInterpolator(float foc) { 1435 focalLength = foc; 1436 } 1437 1438 public float getInterpolation(float input) { 1439 return (1.0f - focalLength / (focalLength + input)) / 1440 (1.0f - focalLength / (focalLength + 1.0f)); 1441 } 1442 } 1443 1444 /* 1445 * The exact reverse of ZInterpolator. 1446 */ 1447 static class InverseZInterpolator implements TimeInterpolator { 1448 private ZInterpolator zInterpolator; 1449 public InverseZInterpolator(float foc) { 1450 zInterpolator = new ZInterpolator(foc); 1451 } 1452 public float getInterpolation(float input) { 1453 return 1 - zInterpolator.getInterpolation(1 - input); 1454 } 1455 } 1456 1457 /* 1458 * ZInterpolator compounded with an ease-out. 1459 */ 1460 static class ZoomOutInterpolator implements TimeInterpolator { 1461 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1462 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1463 1464 public float getInterpolation(float input) { 1465 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1466 } 1467 } 1468 1469 /* 1470 * InvereZInterpolator compounded with an ease-out. 1471 */ 1472 static class ZoomInInterpolator implements TimeInterpolator { 1473 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1474 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1475 1476 public float getInterpolation(float input) { 1477 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1478 } 1479 } 1480 1481 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1482 1483 /* 1484 * 1485 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1486 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1487 * 1488 * These methods mark the appropriate pages as accepting drops (which alters their visual 1489 * appearance). 1490 * 1491 */ 1492 public void onDragStartedWithItem(View v) { 1493 final Canvas canvas = new Canvas(); 1494 1495 // The outline is used to visualize where the item will land if dropped 1496 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1497 } 1498 1499 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1500 final Canvas canvas = new Canvas(); 1501 1502 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1503 1504 // The outline is used to visualize where the item will land if dropped 1505 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1506 size[1], alphaClipPaint); 1507 } 1508 1509 public void exitWidgetResizeMode() { 1510 DragLayer dragLayer = mLauncher.getDragLayer(); 1511 dragLayer.clearAllResizeFrames(); 1512 } 1513 1514 private void initAnimationArrays() { 1515 final int childCount = getChildCount(); 1516 if (mOldTranslationXs != null) return; 1517 mOldTranslationXs = new float[childCount]; 1518 mOldTranslationYs = new float[childCount]; 1519 mOldScaleXs = new float[childCount]; 1520 mOldScaleYs = new float[childCount]; 1521 mOldBackgroundAlphas = new float[childCount]; 1522 mOldBackgroundAlphaMultipliers = new float[childCount]; 1523 mOldAlphas = new float[childCount]; 1524 mOldRotationYs = new float[childCount]; 1525 mNewTranslationXs = new float[childCount]; 1526 mNewTranslationYs = new float[childCount]; 1527 mNewScaleXs = new float[childCount]; 1528 mNewScaleYs = new float[childCount]; 1529 mNewBackgroundAlphas = new float[childCount]; 1530 mNewBackgroundAlphaMultipliers = new float[childCount]; 1531 mNewAlphas = new float[childCount]; 1532 mNewRotationYs = new float[childCount]; 1533 } 1534 1535 Animator getChangeStateAnimation(final State state, boolean animated) { 1536 return getChangeStateAnimation(state, animated, 0); 1537 } 1538 1539 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1540 if (mState == state) { 1541 return null; 1542 } 1543 1544 // Initialize animation arrays for the first time if necessary 1545 initAnimationArrays(); 1546 1547 AnimatorSet anim = animated ? new AnimatorSet() : null; 1548 1549 // Stop any scrolling, move to the current page right away 1550 setCurrentPage(getNextPage()); 1551 1552 final State oldState = mState; 1553 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1554 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1555 final boolean oldStateIsSmall = (oldState == State.SMALL); 1556 mState = state; 1557 final boolean stateIsNormal = (state == State.NORMAL); 1558 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1559 final boolean stateIsSmall = (state == State.SMALL); 1560 float finalScaleFactor = 1.0f; 1561 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1562 float translationX = 0; 1563 float translationY = 0; 1564 boolean zoomIn = true; 1565 1566 if (state != State.NORMAL) { 1567 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1568 if (oldStateIsNormal && stateIsSmall) { 1569 zoomIn = false; 1570 setLayoutScale(finalScaleFactor); 1571 updateChildrenLayersEnabled(); 1572 } else { 1573 finalBackgroundAlpha = 1.0f; 1574 setLayoutScale(finalScaleFactor); 1575 } 1576 } else { 1577 setLayoutScale(1.0f); 1578 } 1579 1580 final int duration = zoomIn ? 1581 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1582 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1583 for (int i = 0; i < getChildCount(); i++) { 1584 final CellLayout cl = (CellLayout) getChildAt(i); 1585 float rotation = 0f; 1586 float initialAlpha = cl.getAlpha(); 1587 float finalAlphaMultiplierValue = 1f; 1588 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1589 (i == mCurrentPage)) ? 1f : 0f; 1590 1591 // Determine the pages alpha during the state transition 1592 if ((oldStateIsSmall && stateIsNormal) || 1593 (oldStateIsNormal && stateIsSmall)) { 1594 // To/from workspace - only show the current page unless the transition is not 1595 // animated and the animation end callback below doesn't run; 1596 // or, if we're in spring-loaded mode 1597 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1598 finalAlpha = 1f; 1599 finalAlphaMultiplierValue = 0f; 1600 } else { 1601 initialAlpha = 0f; 1602 finalAlpha = 0f; 1603 } 1604 } 1605 1606 // Update the rotation of the screen (don't apply rotation on Phone UI) 1607 if (LauncherApplication.isScreenLarge()) { 1608 if (i < mCurrentPage) { 1609 rotation = WORKSPACE_ROTATION; 1610 } else if (i > mCurrentPage) { 1611 rotation = -WORKSPACE_ROTATION; 1612 } 1613 } 1614 1615 // If the screen is not xlarge, then don't rotate the CellLayouts 1616 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1617 // pages. see unshrink(). 1618 if (LauncherApplication.isScreenLarge()) { 1619 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1620 } 1621 1622 mOldAlphas[i] = initialAlpha; 1623 mNewAlphas[i] = finalAlpha; 1624 if (animated) { 1625 mOldTranslationXs[i] = cl.getTranslationX(); 1626 mOldTranslationYs[i] = cl.getTranslationY(); 1627 mOldScaleXs[i] = cl.getScaleX(); 1628 mOldScaleYs[i] = cl.getScaleY(); 1629 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1630 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1631 mOldRotationYs[i] = cl.getRotationY(); 1632 1633 mNewTranslationXs[i] = translationX; 1634 mNewTranslationYs[i] = translationY; 1635 mNewScaleXs[i] = finalScaleFactor; 1636 mNewScaleYs[i] = finalScaleFactor; 1637 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1638 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1639 mNewRotationYs[i] = rotation; 1640 } else { 1641 cl.setTranslationX(translationX); 1642 cl.setTranslationY(translationY); 1643 cl.setScaleX(finalScaleFactor); 1644 cl.setScaleY(finalScaleFactor); 1645 cl.setBackgroundAlpha(finalBackgroundAlpha); 1646 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1647 cl.setShortcutAndWidgetAlpha(finalAlpha); 1648 cl.setRotationY(rotation); 1649 } 1650 } 1651 1652 if (animated) { 1653 for (int index = 0; index < getChildCount(); index++) { 1654 final int i = index; 1655 final CellLayout cl = (CellLayout) getChildAt(i); 1656 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1657 cl.setTranslationX(mNewTranslationXs[i]); 1658 cl.setTranslationY(mNewTranslationYs[i]); 1659 cl.setScaleX(mNewScaleXs[i]); 1660 cl.setScaleY(mNewScaleYs[i]); 1661 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1662 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1663 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1664 cl.setRotationY(mNewRotationYs[i]); 1665 } else { 1666 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1667 a.translationX(mNewTranslationXs[i]) 1668 .translationY(mNewTranslationYs[i]) 1669 .scaleX(mNewScaleXs[i]) 1670 .scaleY(mNewScaleYs[i]) 1671 .setDuration(duration) 1672 .setInterpolator(mZoomInInterpolator); 1673 anim.play(a); 1674 1675 if (mOldAlphas[i] != mNewAlphas[i]) { 1676 LauncherViewPropertyAnimator alphaAnim = 1677 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1678 alphaAnim.alpha(mNewAlphas[i]) 1679 .setDuration(duration) 1680 .setInterpolator(mZoomInInterpolator); 1681 anim.play(alphaAnim); 1682 } 1683 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1684 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1685 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1686 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1687 public void onAnimationUpdate(float a, float b) { 1688 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1689 } 1690 }); 1691 anim.play(rotate); 1692 } 1693 if (mOldBackgroundAlphas[i] != 0 || 1694 mNewBackgroundAlphas[i] != 0 || 1695 mOldBackgroundAlphaMultipliers[i] != 0 || 1696 mNewBackgroundAlphaMultipliers[i] != 0) { 1697 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1698 bgAnim.setInterpolator(mZoomInInterpolator); 1699 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1700 public void onAnimationUpdate(float a, float b) { 1701 cl.setBackgroundAlpha( 1702 a * mOldBackgroundAlphas[i] + 1703 b * mNewBackgroundAlphas[i]); 1704 cl.setBackgroundAlphaMultiplier( 1705 a * mOldBackgroundAlphaMultipliers[i] + 1706 b * mNewBackgroundAlphaMultipliers[i]); 1707 } 1708 }); 1709 anim.play(bgAnim); 1710 } 1711 } 1712 } 1713 buildPageHardwareLayers(); 1714 anim.setStartDelay(delay); 1715 } 1716 1717 if (stateIsSpringLoaded) { 1718 // Right now we're covered by Apps Customize 1719 // Show the background gradient immediately, so the gradient will 1720 // be showing once AppsCustomize disappears 1721 animateBackgroundGradient(getResources().getInteger( 1722 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1723 } else { 1724 // Fade the background gradient away 1725 animateBackgroundGradient(0f, true); 1726 } 1727 return anim; 1728 } 1729 1730 @Override 1731 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1732 mIsSwitchingState = true; 1733 cancelScrollingIndicatorAnimations(); 1734 } 1735 1736 @Override 1737 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1738 } 1739 1740 @Override 1741 public void onLauncherTransitionStep(Launcher l, float t) { 1742 mTransitionProgress = t; 1743 } 1744 1745 @Override 1746 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1747 mIsSwitchingState = false; 1748 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1749 updateChildrenLayersEnabled(); 1750 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1751 // ensure that only the current page is visible during (and subsequently, after) the 1752 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1753 // visibility after the transition animation. 1754 if (!mFadeInAdjacentScreens) { 1755 for (int i = 0; i < getChildCount(); i++) { 1756 final CellLayout cl = (CellLayout) getChildAt(i); 1757 cl.setShortcutAndWidgetAlpha(1f); 1758 } 1759 } 1760 } 1761 1762 @Override 1763 public View getContent() { 1764 return this; 1765 } 1766 1767 /** 1768 * Draw the View v into the given Canvas. 1769 * 1770 * @param v the view to draw 1771 * @param destCanvas the canvas to draw on 1772 * @param padding the horizontal and vertical padding to use when drawing 1773 */ 1774 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1775 final Rect clipRect = mTempRect; 1776 v.getDrawingRect(clipRect); 1777 1778 boolean textVisible = false; 1779 1780 destCanvas.save(); 1781 if (v instanceof TextView && pruneToDrawable) { 1782 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1783 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1784 destCanvas.translate(padding / 2, padding / 2); 1785 d.draw(destCanvas); 1786 } else { 1787 if (v instanceof FolderIcon) { 1788 // For FolderIcons the text can bleed into the icon area, and so we need to 1789 // hide the text completely (which can't be achieved by clipping). 1790 if (((FolderIcon) v).getTextVisible()) { 1791 ((FolderIcon) v).setTextVisible(false); 1792 textVisible = true; 1793 } 1794 } else if (v instanceof BubbleTextView) { 1795 final BubbleTextView tv = (BubbleTextView) v; 1796 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1797 tv.getLayout().getLineTop(0); 1798 } else if (v instanceof TextView) { 1799 final TextView tv = (TextView) v; 1800 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1801 tv.getLayout().getLineTop(0); 1802 } 1803 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1804 destCanvas.clipRect(clipRect, Op.REPLACE); 1805 v.draw(destCanvas); 1806 1807 // Restore text visibility of FolderIcon if necessary 1808 if (textVisible) { 1809 ((FolderIcon) v).setTextVisible(true); 1810 } 1811 } 1812 destCanvas.restore(); 1813 } 1814 1815 /** 1816 * Returns a new bitmap to show when the given View is being dragged around. 1817 * Responsibility for the bitmap is transferred to the caller. 1818 */ 1819 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1820 Bitmap b; 1821 1822 if (v instanceof TextView) { 1823 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1824 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1825 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1826 } else { 1827 b = Bitmap.createBitmap( 1828 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1829 } 1830 1831 canvas.setBitmap(b); 1832 drawDragView(v, canvas, padding, true); 1833 canvas.setBitmap(null); 1834 1835 return b; 1836 } 1837 1838 /** 1839 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1840 * Responsibility for the bitmap is transferred to the caller. 1841 */ 1842 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1843 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1844 final Bitmap b = Bitmap.createBitmap( 1845 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1846 1847 canvas.setBitmap(b); 1848 drawDragView(v, canvas, padding, true); 1849 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1850 canvas.setBitmap(null); 1851 return b; 1852 } 1853 1854 /** 1855 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1856 * Responsibility for the bitmap is transferred to the caller. 1857 */ 1858 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1859 Paint alphaClipPaint) { 1860 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1861 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1862 canvas.setBitmap(b); 1863 1864 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1865 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1866 (h - padding) / (float) orig.getHeight()); 1867 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1868 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1869 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1870 1871 // center the image 1872 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1873 1874 canvas.drawBitmap(orig, src, dst, null); 1875 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1876 alphaClipPaint); 1877 canvas.setBitmap(null); 1878 1879 return b; 1880 } 1881 1882 void startDrag(CellLayout.CellInfo cellInfo) { 1883 View child = cellInfo.cell; 1884 1885 // Make sure the drag was started by a long press as opposed to a long click. 1886 if (!child.isInTouchMode()) { 1887 return; 1888 } 1889 1890 mDragInfo = cellInfo; 1891 child.setVisibility(INVISIBLE); 1892 CellLayout layout = (CellLayout) child.getParent().getParent(); 1893 layout.prepareChildForDrag(child); 1894 1895 child.clearFocus(); 1896 child.setPressed(false); 1897 1898 final Canvas canvas = new Canvas(); 1899 1900 // The outline is used to visualize where the item will land if dropped 1901 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1902 beginDragShared(child, this); 1903 } 1904 1905 public void beginDragShared(View child, DragSource source) { 1906 Resources r = getResources(); 1907 1908 // The drag bitmap follows the touch point around on the screen 1909 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1910 1911 final int bmpWidth = b.getWidth(); 1912 final int bmpHeight = b.getHeight(); 1913 1914 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1915 int dragLayerX = 1916 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1917 int dragLayerY = 1918 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1919 - DRAG_BITMAP_PADDING / 2); 1920 1921 Point dragVisualizeOffset = null; 1922 Rect dragRect = null; 1923 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1924 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1925 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1926 int top = child.getPaddingTop(); 1927 int left = (bmpWidth - iconSize) / 2; 1928 int right = left + iconSize; 1929 int bottom = top + iconSize; 1930 dragLayerY += top; 1931 // Note: The drag region is used to calculate drag layer offsets, but the 1932 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1933 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1934 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1935 dragRect = new Rect(left, top, right, bottom); 1936 } else if (child instanceof FolderIcon) { 1937 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1938 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1939 } 1940 1941 // Clear the pressed state if necessary 1942 if (child instanceof BubbleTextView) { 1943 BubbleTextView icon = (BubbleTextView) child; 1944 icon.clearPressedOrFocusedBackground(); 1945 } 1946 1947 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1948 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1949 b.recycle(); 1950 1951 // Show the scrolling indicator when you pick up an item 1952 showScrollingIndicator(false); 1953 } 1954 1955 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1956 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1957 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1958 1959 final int[] cellXY = new int[2]; 1960 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1961 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1962 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1963 cellXY[1]); 1964 } 1965 1966 public boolean transitionStateShouldAllowDrop() { 1967 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1968 } 1969 1970 /** 1971 * {@inheritDoc} 1972 */ 1973 public boolean acceptDrop(DragObject d) { 1974 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1975 CellLayout dropTargetLayout = mDropToLayout; 1976 if (d.dragSource != this) { 1977 // Don't accept the drop if we're not over a screen at time of drop 1978 if (dropTargetLayout == null) { 1979 return false; 1980 } 1981 if (!transitionStateShouldAllowDrop()) return false; 1982 1983 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1984 d.dragView, mDragViewVisualCenter); 1985 1986 // We want the point to be mapped to the dragTarget. 1987 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1988 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1989 } else { 1990 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1991 } 1992 1993 int spanX = 1; 1994 int spanY = 1; 1995 if (mDragInfo != null) { 1996 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1997 spanX = dragCellInfo.spanX; 1998 spanY = dragCellInfo.spanY; 1999 } else { 2000 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2001 spanX = dragInfo.spanX; 2002 spanY = dragInfo.spanY; 2003 } 2004 2005 int minSpanX = spanX; 2006 int minSpanY = spanY; 2007 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2008 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2009 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2010 } 2011 2012 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2013 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2014 mTargetCell); 2015 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2016 mDragViewVisualCenter[1], mTargetCell); 2017 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2018 mTargetCell, distance, true)) { 2019 return true; 2020 } 2021 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2022 mTargetCell, distance)) { 2023 return true; 2024 } 2025 2026 int[] resultSpan = new int[2]; 2027 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2028 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2029 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2030 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2031 2032 // Don't accept the drop if there's no room for the item 2033 if (!foundCell) { 2034 // Don't show the message if we are dropping on the AllApps button and the hotseat 2035 // is full 2036 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2037 if (mTargetCell != null && isHotseat) { 2038 Hotseat hotseat = mLauncher.getHotseat(); 2039 if (hotseat.isAllAppsButtonRank( 2040 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2041 return false; 2042 } 2043 } 2044 2045 mLauncher.showOutOfSpaceMessage(isHotseat); 2046 return false; 2047 } 2048 } 2049 return true; 2050 } 2051 2052 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2053 distance, boolean considerTimeout) { 2054 if (distance > mMaxDistanceForFolderCreation) return false; 2055 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2056 2057 if (dropOverView != null) { 2058 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2059 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2060 return false; 2061 } 2062 } 2063 2064 boolean hasntMoved = false; 2065 if (mDragInfo != null) { 2066 hasntMoved = dropOverView == mDragInfo.cell; 2067 } 2068 2069 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2070 return false; 2071 } 2072 2073 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2074 boolean willBecomeShortcut = 2075 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2076 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2077 2078 return (aboveShortcut && willBecomeShortcut); 2079 } 2080 2081 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2082 float distance) { 2083 if (distance > mMaxDistanceForFolderCreation) return false; 2084 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2085 2086 if (dropOverView != null) { 2087 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2088 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2089 return false; 2090 } 2091 } 2092 2093 if (dropOverView instanceof FolderIcon) { 2094 FolderIcon fi = (FolderIcon) dropOverView; 2095 if (fi.acceptDrop(dragInfo)) { 2096 return true; 2097 } 2098 } 2099 return false; 2100 } 2101 2102 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2103 int[] targetCell, float distance, boolean external, DragView dragView, 2104 Runnable postAnimationRunnable) { 2105 if (distance > mMaxDistanceForFolderCreation) return false; 2106 View v = target.getChildAt(targetCell[0], targetCell[1]); 2107 2108 boolean hasntMoved = false; 2109 if (mDragInfo != null) { 2110 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2111 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2112 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2113 } 2114 2115 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2116 mCreateUserFolderOnDrop = false; 2117 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2118 2119 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2120 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2121 2122 if (aboveShortcut && willBecomeShortcut) { 2123 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2124 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2125 // if the drag started here, we need to remove it from the workspace 2126 if (!external) { 2127 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2128 } 2129 2130 Rect folderLocation = new Rect(); 2131 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2132 target.removeView(v); 2133 2134 FolderIcon fi = 2135 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2136 destInfo.cellX = -1; 2137 destInfo.cellY = -1; 2138 sourceInfo.cellX = -1; 2139 sourceInfo.cellY = -1; 2140 2141 // If the dragView is null, we can't animate 2142 boolean animate = dragView != null; 2143 if (animate) { 2144 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2145 postAnimationRunnable); 2146 } else { 2147 fi.addItem(destInfo); 2148 fi.addItem(sourceInfo); 2149 } 2150 return true; 2151 } 2152 return false; 2153 } 2154 2155 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2156 float distance, DragObject d, boolean external) { 2157 if (distance > mMaxDistanceForFolderCreation) return false; 2158 2159 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2160 if (!mAddToExistingFolderOnDrop) return false; 2161 mAddToExistingFolderOnDrop = false; 2162 2163 if (dropOverView instanceof FolderIcon) { 2164 FolderIcon fi = (FolderIcon) dropOverView; 2165 if (fi.acceptDrop(d.dragInfo)) { 2166 fi.onDrop(d); 2167 2168 // if the drag started here, we need to remove it from the workspace 2169 if (!external) { 2170 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2171 } 2172 return true; 2173 } 2174 } 2175 return false; 2176 } 2177 2178 public void onDrop(final DragObject d) { 2179 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2180 mDragViewVisualCenter); 2181 2182 CellLayout dropTargetLayout = mDropToLayout; 2183 2184 // We want the point to be mapped to the dragTarget. 2185 if (dropTargetLayout != null) { 2186 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2187 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2188 } else { 2189 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2190 } 2191 } 2192 2193 int snapScreen = -1; 2194 boolean resizeOnDrop = false; 2195 if (d.dragSource != this) { 2196 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2197 (int) mDragViewVisualCenter[1] }; 2198 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2199 } else if (mDragInfo != null) { 2200 final View cell = mDragInfo.cell; 2201 2202 Runnable resizeRunnable = null; 2203 if (dropTargetLayout != null) { 2204 // Move internally 2205 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2206 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2207 long container = hasMovedIntoHotseat ? 2208 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2209 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2210 int screen = (mTargetCell[0] < 0) ? 2211 mDragInfo.screen : indexOfChild(dropTargetLayout); 2212 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2213 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2214 // First we find the cell nearest to point at which the item is 2215 // dropped, without any consideration to whether there is an item there. 2216 2217 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2218 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2219 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2220 mDragViewVisualCenter[1], mTargetCell); 2221 2222 // If the item being dropped is a shortcut and the nearest drop 2223 // cell also contains a shortcut, then create a folder with the two shortcuts. 2224 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2225 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2226 return; 2227 } 2228 2229 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2230 distance, d, false)) { 2231 return; 2232 } 2233 2234 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2235 // we need to find the nearest cell location that is vacant 2236 ItemInfo item = (ItemInfo) d.dragInfo; 2237 int minSpanX = item.spanX; 2238 int minSpanY = item.spanY; 2239 if (item.minSpanX > 0 && item.minSpanY > 0) { 2240 minSpanX = item.minSpanX; 2241 minSpanY = item.minSpanY; 2242 } 2243 2244 int[] resultSpan = new int[2]; 2245 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2246 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2247 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2248 2249 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2250 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2251 resizeOnDrop = true; 2252 item.spanX = resultSpan[0]; 2253 item.spanY = resultSpan[1]; 2254 } 2255 2256 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2257 snapScreen = screen; 2258 snapToPage(screen); 2259 } 2260 2261 if (foundCell) { 2262 final ItemInfo info = (ItemInfo) cell.getTag(); 2263 if (hasMovedLayouts) { 2264 // Reparent the view 2265 getParentCellLayoutForView(cell).removeView(cell); 2266 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2267 info.spanX, info.spanY); 2268 } 2269 2270 // update the item's position after drop 2271 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2272 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2273 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2274 lp.cellHSpan = item.spanX; 2275 lp.cellVSpan = item.spanY; 2276 lp.isLockedToGrid = true; 2277 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2278 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2279 2280 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2281 cell instanceof LauncherAppWidgetHostView) { 2282 final CellLayout cellLayout = dropTargetLayout; 2283 // We post this call so that the widget has a chance to be placed 2284 // in its final location 2285 2286 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2287 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2288 if (pinfo != null && 2289 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2290 final Runnable addResizeFrame = new Runnable() { 2291 public void run() { 2292 DragLayer dragLayer = mLauncher.getDragLayer(); 2293 dragLayer.addResizeFrame(info, hostView, cellLayout); 2294 } 2295 }; 2296 resizeRunnable = (new Runnable() { 2297 public void run() { 2298 if (!isPageMoving()) { 2299 addResizeFrame.run(); 2300 } else { 2301 mDelayedResizeRunnable = addResizeFrame; 2302 } 2303 } 2304 }); 2305 } 2306 } 2307 2308 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2309 lp.cellY); 2310 } else { 2311 // If we can't find a drop location, we return the item to its original position 2312 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2313 mTargetCell[0] = lp.cellX; 2314 mTargetCell[1] = lp.cellY; 2315 } 2316 } 2317 2318 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2319 final Runnable finalResizeRunnable = resizeRunnable; 2320 // Prepare it to be animated into its new position 2321 // This must be called after the view has been re-parented 2322 final Runnable onCompleteRunnable = new Runnable() { 2323 @Override 2324 public void run() { 2325 mAnimatingViewIntoPlace = false; 2326 updateChildrenLayersEnabled(); 2327 if (finalResizeRunnable != null) { 2328 finalResizeRunnable.run(); 2329 } 2330 } 2331 }; 2332 mAnimatingViewIntoPlace = true; 2333 if (d.dragView.hasDrawn()) { 2334 final ItemInfo info = (ItemInfo) cell.getTag(); 2335 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2336 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2337 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2338 animateWidgetDrop(info, parent, d.dragView, 2339 onCompleteRunnable, animationType, cell, false); 2340 } else { 2341 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2342 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2343 onCompleteRunnable, this); 2344 } 2345 } else { 2346 d.deferDragViewCleanupPostAnimation = false; 2347 cell.setVisibility(VISIBLE); 2348 } 2349 parent.onDropChild(cell); 2350 } 2351 } 2352 2353 public void setFinalScrollForPageChange(int screen) { 2354 if (screen >= 0) { 2355 mSavedScrollX = getScrollX(); 2356 CellLayout cl = (CellLayout) getChildAt(screen); 2357 mSavedTranslationX = cl.getTranslationX(); 2358 mSavedRotationY = cl.getRotationY(); 2359 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2360 setScrollX(newX); 2361 cl.setTranslationX(0f); 2362 cl.setRotationY(0f); 2363 } 2364 } 2365 2366 public void resetFinalScrollForPageChange(int screen) { 2367 if (screen >= 0) { 2368 CellLayout cl = (CellLayout) getChildAt(screen); 2369 setScrollX(mSavedScrollX); 2370 cl.setTranslationX(mSavedTranslationX); 2371 cl.setRotationY(mSavedRotationY); 2372 } 2373 } 2374 2375 public void getViewLocationRelativeToSelf(View v, int[] location) { 2376 getLocationInWindow(location); 2377 int x = location[0]; 2378 int y = location[1]; 2379 2380 v.getLocationInWindow(location); 2381 int vX = location[0]; 2382 int vY = location[1]; 2383 2384 location[0] = vX - x; 2385 location[1] = vY - y; 2386 } 2387 2388 public void onDragEnter(DragObject d) { 2389 mDragEnforcer.onDragEnter(); 2390 mCreateUserFolderOnDrop = false; 2391 mAddToExistingFolderOnDrop = false; 2392 2393 mDropToLayout = null; 2394 CellLayout layout = getCurrentDropLayout(); 2395 setCurrentDropLayout(layout); 2396 setCurrentDragOverlappingLayout(layout); 2397 2398 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2399 // don't need to show the outlines 2400 if (LauncherApplication.isScreenLarge()) { 2401 showOutlines(); 2402 } 2403 } 2404 2405 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2406 Resources res = launcher.getResources(); 2407 Display display = launcher.getWindowManager().getDefaultDisplay(); 2408 Point smallestSize = new Point(); 2409 Point largestSize = new Point(); 2410 display.getCurrentSizeRange(smallestSize, largestSize); 2411 if (orientation == CellLayout.LANDSCAPE) { 2412 if (mLandscapeCellLayoutMetrics == null) { 2413 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2414 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2415 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2416 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2417 int width = largestSize.x - paddingLeft - paddingRight; 2418 int height = smallestSize.y - paddingTop - paddingBottom; 2419 mLandscapeCellLayoutMetrics = new Rect(); 2420 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2421 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2422 orientation); 2423 } 2424 return mLandscapeCellLayoutMetrics; 2425 } else if (orientation == CellLayout.PORTRAIT) { 2426 if (mPortraitCellLayoutMetrics == null) { 2427 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2428 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2429 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2430 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2431 int width = smallestSize.x - paddingLeft - paddingRight; 2432 int height = largestSize.y - paddingTop - paddingBottom; 2433 mPortraitCellLayoutMetrics = new Rect(); 2434 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2435 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2436 orientation); 2437 } 2438 return mPortraitCellLayoutMetrics; 2439 } 2440 return null; 2441 } 2442 2443 public void onDragExit(DragObject d) { 2444 mDragEnforcer.onDragExit(); 2445 2446 // Here we store the final page that will be dropped to, if the workspace in fact 2447 // receives the drop 2448 if (mInScrollArea) { 2449 mDropToLayout = mDragOverlappingLayout; 2450 } else { 2451 mDropToLayout = mDragTargetLayout; 2452 } 2453 2454 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2455 mCreateUserFolderOnDrop = true; 2456 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2457 mAddToExistingFolderOnDrop = true; 2458 } 2459 2460 // Reset the scroll area and previous drag target 2461 onResetScrollArea(); 2462 setCurrentDropLayout(null); 2463 setCurrentDragOverlappingLayout(null); 2464 2465 mSpringLoadedDragController.cancel(); 2466 2467 if (!mIsPageMoving) { 2468 hideOutlines(); 2469 } 2470 } 2471 2472 void setCurrentDropLayout(CellLayout layout) { 2473 if (mDragTargetLayout != null) { 2474 mDragTargetLayout.revertTempState(); 2475 mDragTargetLayout.onDragExit(); 2476 } 2477 mDragTargetLayout = layout; 2478 if (mDragTargetLayout != null) { 2479 mDragTargetLayout.onDragEnter(); 2480 } 2481 cleanupReorder(true); 2482 cleanupFolderCreation(); 2483 setCurrentDropOverCell(-1, -1); 2484 } 2485 2486 void setCurrentDragOverlappingLayout(CellLayout layout) { 2487 if (mDragOverlappingLayout != null) { 2488 mDragOverlappingLayout.setIsDragOverlapping(false); 2489 } 2490 mDragOverlappingLayout = layout; 2491 if (mDragOverlappingLayout != null) { 2492 mDragOverlappingLayout.setIsDragOverlapping(true); 2493 } 2494 invalidate(); 2495 } 2496 2497 void setCurrentDropOverCell(int x, int y) { 2498 if (x != mDragOverX || y != mDragOverY) { 2499 mDragOverX = x; 2500 mDragOverY = y; 2501 setDragMode(DRAG_MODE_NONE); 2502 } 2503 } 2504 2505 void setDragMode(int dragMode) { 2506 if (dragMode != mDragMode) { 2507 if (dragMode == DRAG_MODE_NONE) { 2508 cleanupAddToFolder(); 2509 // We don't want to cancel the re-order alarm every time the target cell changes 2510 // as this feels to slow / unresponsive. 2511 cleanupReorder(false); 2512 cleanupFolderCreation(); 2513 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2514 cleanupReorder(true); 2515 cleanupFolderCreation(); 2516 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2517 cleanupAddToFolder(); 2518 cleanupReorder(true); 2519 } else if (dragMode == DRAG_MODE_REORDER) { 2520 cleanupAddToFolder(); 2521 cleanupFolderCreation(); 2522 } 2523 mDragMode = dragMode; 2524 } 2525 } 2526 2527 private void cleanupFolderCreation() { 2528 if (mDragFolderRingAnimator != null) { 2529 mDragFolderRingAnimator.animateToNaturalState(); 2530 } 2531 mFolderCreationAlarm.cancelAlarm(); 2532 } 2533 2534 private void cleanupAddToFolder() { 2535 if (mDragOverFolderIcon != null) { 2536 mDragOverFolderIcon.onDragExit(null); 2537 mDragOverFolderIcon = null; 2538 } 2539 } 2540 2541 private void cleanupReorder(boolean cancelAlarm) { 2542 // Any pending reorders are canceled 2543 if (cancelAlarm) { 2544 mReorderAlarm.cancelAlarm(); 2545 } 2546 mLastReorderX = -1; 2547 mLastReorderY = -1; 2548 } 2549 2550 public DropTarget getDropTargetDelegate(DragObject d) { 2551 return null; 2552 } 2553 2554 /* 2555 * 2556 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2557 * coordinate space. The argument xy is modified with the return result. 2558 * 2559 */ 2560 void mapPointFromSelfToChild(View v, float[] xy) { 2561 mapPointFromSelfToChild(v, xy, null); 2562 } 2563 2564 /* 2565 * 2566 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2567 * coordinate space. The argument xy is modified with the return result. 2568 * 2569 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2570 * computing it itself; we use this to avoid redundant matrix inversions in 2571 * findMatchingPageForDragOver 2572 * 2573 */ 2574 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2575 if (cachedInverseMatrix == null) { 2576 v.getMatrix().invert(mTempInverseMatrix); 2577 cachedInverseMatrix = mTempInverseMatrix; 2578 } 2579 int scrollX = getScrollX(); 2580 if (mNextPage != INVALID_PAGE) { 2581 scrollX = mScroller.getFinalX(); 2582 } 2583 xy[0] = xy[0] + scrollX - v.getLeft(); 2584 xy[1] = xy[1] + getScrollY() - v.getTop(); 2585 cachedInverseMatrix.mapPoints(xy); 2586 } 2587 2588 /* 2589 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2590 * covers the full screen) 2591 */ 2592 void mapPointFromSelfToSibling(View v, float[] xy) { 2593 xy[0] = xy[0] - v.getLeft(); 2594 xy[1] = xy[1] - v.getTop(); 2595 } 2596 2597 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2598 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2599 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2600 } 2601 2602 /* 2603 * 2604 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2605 * the parent View's coordinate space. The argument xy is modified with the return result. 2606 * 2607 */ 2608 void mapPointFromChildToSelf(View v, float[] xy) { 2609 v.getMatrix().mapPoints(xy); 2610 int scrollX = getScrollX(); 2611 if (mNextPage != INVALID_PAGE) { 2612 scrollX = mScroller.getFinalX(); 2613 } 2614 xy[0] -= (scrollX - v.getLeft()); 2615 xy[1] -= (getScrollY() - v.getTop()); 2616 } 2617 2618 static private float squaredDistance(float[] point1, float[] point2) { 2619 float distanceX = point1[0] - point2[0]; 2620 float distanceY = point2[1] - point2[1]; 2621 return distanceX * distanceX + distanceY * distanceY; 2622 } 2623 2624 /* 2625 * 2626 * Returns true if the passed CellLayout cl overlaps with dragView 2627 * 2628 */ 2629 boolean overlaps(CellLayout cl, DragView dragView, 2630 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2631 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2632 final float[] draggedItemTopLeft = mTempDragCoordinates; 2633 draggedItemTopLeft[0] = dragViewX; 2634 draggedItemTopLeft[1] = dragViewY; 2635 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2636 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2637 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2638 2639 // Transform the dragged item's top left coordinates 2640 // to the CellLayout's local coordinates 2641 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2642 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2643 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2644 2645 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2646 // Transform the dragged item's bottom right coordinates 2647 // to the CellLayout's local coordinates 2648 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2649 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2650 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2651 2652 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2653 float overlap = (overlapRegionRight - overlapRegionLeft) * 2654 (overlapRegionBottom - overlapRegionTop); 2655 if (overlap > 0) { 2656 return true; 2657 } 2658 } 2659 } 2660 return false; 2661 } 2662 2663 /* 2664 * 2665 * This method returns the CellLayout that is currently being dragged to. In order to drag 2666 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2667 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2668 * 2669 * Return null if no CellLayout is currently being dragged over 2670 * 2671 */ 2672 private CellLayout findMatchingPageForDragOver( 2673 DragView dragView, float originX, float originY, boolean exact) { 2674 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2675 // with the item being dragged and then choose the one that's closest to the touch point 2676 final int screenCount = getChildCount(); 2677 CellLayout bestMatchingScreen = null; 2678 float smallestDistSoFar = Float.MAX_VALUE; 2679 2680 for (int i = 0; i < screenCount; i++) { 2681 CellLayout cl = (CellLayout) getChildAt(i); 2682 2683 final float[] touchXy = {originX, originY}; 2684 // Transform the touch coordinates to the CellLayout's local coordinates 2685 // If the touch point is within the bounds of the cell layout, we can return immediately 2686 cl.getMatrix().invert(mTempInverseMatrix); 2687 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2688 2689 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2690 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2691 return cl; 2692 } 2693 2694 if (!exact) { 2695 // Get the center of the cell layout in screen coordinates 2696 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2697 cellLayoutCenter[0] = cl.getWidth()/2; 2698 cellLayoutCenter[1] = cl.getHeight()/2; 2699 mapPointFromChildToSelf(cl, cellLayoutCenter); 2700 2701 touchXy[0] = originX; 2702 touchXy[1] = originY; 2703 2704 // Calculate the distance between the center of the CellLayout 2705 // and the touch point 2706 float dist = squaredDistance(touchXy, cellLayoutCenter); 2707 2708 if (dist < smallestDistSoFar) { 2709 smallestDistSoFar = dist; 2710 bestMatchingScreen = cl; 2711 } 2712 } 2713 } 2714 return bestMatchingScreen; 2715 } 2716 2717 // This is used to compute the visual center of the dragView. This point is then 2718 // used to visualize drop locations and determine where to drop an item. The idea is that 2719 // the visual center represents the user's interpretation of where the item is, and hence 2720 // is the appropriate point to use when determining drop location. 2721 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2722 DragView dragView, float[] recycle) { 2723 float res[]; 2724 if (recycle == null) { 2725 res = new float[2]; 2726 } else { 2727 res = recycle; 2728 } 2729 2730 // First off, the drag view has been shifted in a way that is not represented in the 2731 // x and y values or the x/yOffsets. Here we account for that shift. 2732 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2733 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2734 2735 // These represent the visual top and left of drag view if a dragRect was provided. 2736 // If a dragRect was not provided, then they correspond to the actual view left and 2737 // top, as the dragRect is in that case taken to be the entire dragView. 2738 // R.dimen.dragViewOffsetY. 2739 int left = x - xOffset; 2740 int top = y - yOffset; 2741 2742 // In order to find the visual center, we shift by half the dragRect 2743 res[0] = left + dragView.getDragRegion().width() / 2; 2744 res[1] = top + dragView.getDragRegion().height() / 2; 2745 2746 return res; 2747 } 2748 2749 private boolean isDragWidget(DragObject d) { 2750 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2751 d.dragInfo instanceof PendingAddWidgetInfo); 2752 } 2753 private boolean isExternalDragWidget(DragObject d) { 2754 return d.dragSource != this && isDragWidget(d); 2755 } 2756 2757 public void onDragOver(DragObject d) { 2758 // Skip drag over events while we are dragging over side pages 2759 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2760 2761 Rect r = new Rect(); 2762 CellLayout layout = null; 2763 ItemInfo item = (ItemInfo) d.dragInfo; 2764 2765 // Ensure that we have proper spans for the item that we are dropping 2766 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2767 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2768 d.dragView, mDragViewVisualCenter); 2769 2770 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2771 // Identify whether we have dragged over a side page 2772 if (isSmall()) { 2773 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2774 mLauncher.getHotseat().getHitRect(r); 2775 if (r.contains(d.x, d.y)) { 2776 layout = mLauncher.getHotseat().getLayout(); 2777 } 2778 } 2779 if (layout == null) { 2780 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2781 } 2782 if (layout != mDragTargetLayout) { 2783 2784 setCurrentDropLayout(layout); 2785 setCurrentDragOverlappingLayout(layout); 2786 2787 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2788 if (isInSpringLoadedMode) { 2789 if (mLauncher.isHotseatLayout(layout)) { 2790 mSpringLoadedDragController.cancel(); 2791 } else { 2792 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2793 } 2794 } 2795 } 2796 } else { 2797 // Test to see if we are over the hotseat otherwise just use the current page 2798 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2799 mLauncher.getHotseat().getHitRect(r); 2800 if (r.contains(d.x, d.y)) { 2801 layout = mLauncher.getHotseat().getLayout(); 2802 } 2803 } 2804 if (layout == null) { 2805 layout = getCurrentDropLayout(); 2806 } 2807 if (layout != mDragTargetLayout) { 2808 setCurrentDropLayout(layout); 2809 setCurrentDragOverlappingLayout(layout); 2810 } 2811 } 2812 2813 // Handle the drag over 2814 if (mDragTargetLayout != null) { 2815 // We want the point to be mapped to the dragTarget. 2816 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2817 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2818 } else { 2819 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2820 } 2821 2822 ItemInfo info = (ItemInfo) d.dragInfo; 2823 2824 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2825 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2826 2827 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2828 2829 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2830 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2831 2832 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2833 mTargetCell[1]); 2834 2835 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2836 targetCellDistance, dragOverView); 2837 2838 int minSpanX = item.spanX; 2839 int minSpanY = item.spanY; 2840 if (item.minSpanX > 0 && item.minSpanY > 0) { 2841 minSpanX = item.minSpanX; 2842 minSpanY = item.minSpanY; 2843 } 2844 2845 int[] reorderPosition = new int[2]; 2846 reorderPosition = findNearestArea((int) mDragViewVisualCenter[0], 2847 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, 2848 reorderPosition); 2849 2850 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2851 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2852 item.spanY, child, mTargetCell); 2853 2854 if (!nearestDropOccupied) { 2855 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2856 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2857 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2858 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2859 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2860 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderPosition[0] || 2861 mLastReorderY != reorderPosition[1])) { 2862 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2863 // reorder, then we schedule a reorder 2864 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2865 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2866 mReorderAlarm.setOnAlarmListener(listener); 2867 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2868 } 2869 2870 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2871 !nearestDropOccupied) { 2872 if (mDragTargetLayout != null) { 2873 mDragTargetLayout.revertTempState(); 2874 } 2875 } 2876 } 2877 } 2878 2879 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2880 int[] targetCell, float distance, View dragOverView) { 2881 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2882 false); 2883 2884 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2885 !mFolderCreationAlarm.alarmPending()) { 2886 mFolderCreationAlarm.setOnAlarmListener(new 2887 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2888 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2889 return; 2890 } 2891 2892 boolean willAddToFolder = 2893 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2894 2895 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2896 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2897 mAddToExistingFolderOnDrop = true; 2898 mDragOverFolderIcon.onDragEnter(info); 2899 if (targetLayout != null) { 2900 targetLayout.clearDragOutlines(); 2901 } 2902 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2903 return; 2904 } 2905 2906 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2907 setDragMode(DRAG_MODE_NONE); 2908 } 2909 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2910 setDragMode(DRAG_MODE_NONE); 2911 } 2912 2913 return; 2914 } 2915 2916 class FolderCreationAlarmListener implements OnAlarmListener { 2917 CellLayout layout; 2918 int cellX; 2919 int cellY; 2920 2921 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2922 this.layout = layout; 2923 this.cellX = cellX; 2924 this.cellY = cellY; 2925 } 2926 2927 public void onAlarm(Alarm alarm) { 2928 if (mDragFolderRingAnimator == null) { 2929 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2930 } 2931 mDragFolderRingAnimator.setCell(cellX, cellY); 2932 mDragFolderRingAnimator.setCellLayout(layout); 2933 mDragFolderRingAnimator.animateToAcceptState(); 2934 layout.showFolderAccept(mDragFolderRingAnimator); 2935 layout.clearDragOutlines(); 2936 setDragMode(DRAG_MODE_CREATE_FOLDER); 2937 } 2938 } 2939 2940 class ReorderAlarmListener implements OnAlarmListener { 2941 float[] dragViewCenter; 2942 int minSpanX, minSpanY, spanX, spanY; 2943 DragView dragView; 2944 View child; 2945 2946 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2947 int spanY, DragView dragView, View child) { 2948 this.dragViewCenter = dragViewCenter; 2949 this.minSpanX = minSpanX; 2950 this.minSpanY = minSpanY; 2951 this.spanX = spanX; 2952 this.spanY = spanY; 2953 this.child = child; 2954 this.dragView = dragView; 2955 } 2956 2957 public void onAlarm(Alarm alarm) { 2958 int[] resultSpan = new int[2]; 2959 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2960 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2961 mLastReorderX = mTargetCell[0]; 2962 mLastReorderY = mTargetCell[1]; 2963 2964 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2965 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2966 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2967 2968 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2969 mDragTargetLayout.revertTempState(); 2970 } else { 2971 setDragMode(DRAG_MODE_REORDER); 2972 } 2973 2974 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2975 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2976 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2977 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2978 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2979 } 2980 } 2981 2982 @Override 2983 public void getHitRect(Rect outRect) { 2984 // We want the workspace to have the whole area of the display (it will find the correct 2985 // cell layout to drop to in the existing drag/drop logic. 2986 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2987 } 2988 2989 /** 2990 * Add the item specified by dragInfo to the given layout. 2991 * @return true if successful 2992 */ 2993 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2994 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2995 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2996 return true; 2997 } 2998 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2999 return false; 3000 } 3001 3002 private void onDropExternal(int[] touchXY, Object dragInfo, 3003 CellLayout cellLayout, boolean insertAtFirst) { 3004 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3005 } 3006 3007 /** 3008 * Drop an item that didn't originate on one of the workspace screens. 3009 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3010 * come from another app altogether. 3011 * 3012 * NOTE: This can also be called when we are outside of a drag event, when we want 3013 * to add an item to one of the workspace screens. 3014 */ 3015 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3016 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3017 final Runnable exitSpringLoadedRunnable = new Runnable() { 3018 @Override 3019 public void run() { 3020 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3021 } 3022 }; 3023 3024 ItemInfo info = (ItemInfo) dragInfo; 3025 int spanX = info.spanX; 3026 int spanY = info.spanY; 3027 if (mDragInfo != null) { 3028 spanX = mDragInfo.spanX; 3029 spanY = mDragInfo.spanY; 3030 } 3031 3032 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3033 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3034 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3035 final int screen = indexOfChild(cellLayout); 3036 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3037 && mState != State.SPRING_LOADED) { 3038 snapToPage(screen); 3039 } 3040 3041 if (info instanceof PendingAddItemInfo) { 3042 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3043 3044 boolean findNearestVacantCell = true; 3045 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3046 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3047 cellLayout, mTargetCell); 3048 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3049 mDragViewVisualCenter[1], mTargetCell); 3050 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3051 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3052 cellLayout, mTargetCell, distance)) { 3053 findNearestVacantCell = false; 3054 } 3055 } 3056 3057 final ItemInfo item = (ItemInfo) d.dragInfo; 3058 if (findNearestVacantCell) { 3059 int minSpanX = item.spanX; 3060 int minSpanY = item.spanY; 3061 if (item.minSpanX > 0 && item.minSpanY > 0) { 3062 minSpanX = item.minSpanX; 3063 minSpanY = item.minSpanY; 3064 } 3065 int[] resultSpan = new int[2]; 3066 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3067 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3068 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3069 item.spanX = resultSpan[0]; 3070 item.spanY = resultSpan[1]; 3071 } 3072 3073 Runnable onAnimationCompleteRunnable = new Runnable() { 3074 @Override 3075 public void run() { 3076 // When dragging and dropping from customization tray, we deal with creating 3077 // widgets/shortcuts/folders in a slightly different way 3078 switch (pendingInfo.itemType) { 3079 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3080 int span[] = new int[2]; 3081 span[0] = item.spanX; 3082 span[1] = item.spanY; 3083 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3084 container, screen, mTargetCell, span, null); 3085 break; 3086 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3087 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3088 container, screen, mTargetCell, null); 3089 break; 3090 default: 3091 throw new IllegalStateException("Unknown item type: " + 3092 pendingInfo.itemType); 3093 } 3094 } 3095 }; 3096 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3097 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3098 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3099 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3100 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3101 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3102 } 3103 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3104 animationStyle, finalView, true); 3105 } else { 3106 // This is for other drag/drop cases, like dragging from All Apps 3107 View view = null; 3108 3109 switch (info.itemType) { 3110 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3111 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3112 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3113 // Came from all apps -- make a copy 3114 info = new ShortcutInfo((ApplicationInfo) info); 3115 } 3116 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3117 (ShortcutInfo) info); 3118 break; 3119 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3120 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3121 (FolderInfo) info, mIconCache); 3122 break; 3123 default: 3124 throw new IllegalStateException("Unknown item type: " + info.itemType); 3125 } 3126 3127 // First we find the cell nearest to point at which the item is 3128 // dropped, without any consideration to whether there is an item there. 3129 if (touchXY != null) { 3130 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3131 cellLayout, mTargetCell); 3132 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3133 mDragViewVisualCenter[1], mTargetCell); 3134 d.postAnimationRunnable = exitSpringLoadedRunnable; 3135 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3136 true, d.dragView, d.postAnimationRunnable)) { 3137 return; 3138 } 3139 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3140 true)) { 3141 return; 3142 } 3143 } 3144 3145 if (touchXY != null) { 3146 // when dragging and dropping, just find the closest free spot 3147 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3148 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3149 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3150 } else { 3151 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3152 } 3153 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3154 info.spanY, insertAtFirst); 3155 cellLayout.onDropChild(view); 3156 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3157 cellLayout.getShortcutsAndWidgets().measureChild(view); 3158 3159 3160 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3161 lp.cellX, lp.cellY); 3162 3163 if (d.dragView != null) { 3164 // We wrap the animation call in the temporary set and reset of the current 3165 // cellLayout to its final transform -- this means we animate the drag view to 3166 // the correct final location. 3167 setFinalTransitionTransform(cellLayout); 3168 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3169 exitSpringLoadedRunnable); 3170 resetTransitionTransform(cellLayout); 3171 } 3172 } 3173 } 3174 3175 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3176 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3177 widgetInfo.spanY, widgetInfo, false); 3178 int visibility = layout.getVisibility(); 3179 layout.setVisibility(VISIBLE); 3180 3181 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3182 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3183 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3184 Bitmap.Config.ARGB_8888); 3185 Canvas c = new Canvas(b); 3186 3187 layout.measure(width, height); 3188 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3189 layout.draw(c); 3190 c.setBitmap(null); 3191 layout.setVisibility(visibility); 3192 return b; 3193 } 3194 3195 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3196 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3197 boolean external) { 3198 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3199 // location and size on the home screen. 3200 int spanX = info.spanX; 3201 int spanY = info.spanY; 3202 3203 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3204 loc[0] = r.left; 3205 loc[1] = r.top; 3206 3207 setFinalTransitionTransform(layout); 3208 float cellLayoutScale = 3209 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3210 resetTransitionTransform(layout); 3211 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3212 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3213 3214 // The animation will scale the dragView about its center, so we need to center about 3215 // the final location. 3216 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3217 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3218 3219 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3220 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3221 } 3222 3223 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3224 final Runnable onCompleteRunnable, int animationType, final View finalView, 3225 boolean external) { 3226 Rect from = new Rect(); 3227 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3228 3229 int[] finalPos = new int[2]; 3230 float scaleXY[] = new float[2]; 3231 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3232 finalView, external); 3233 3234 Resources res = mLauncher.getResources(); 3235 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3236 3237 // In the case where we've prebound the widget, we remove it from the DragLayer 3238 if (finalView instanceof AppWidgetHostView && external) { 3239 mLauncher.getDragLayer().removeView(finalView); 3240 } 3241 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3242 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3243 dragView.setCrossFadeBitmap(crossFadeBitmap); 3244 dragView.crossFade((int) (duration * 0.8f)); 3245 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3246 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3247 } 3248 3249 DragLayer dragLayer = mLauncher.getDragLayer(); 3250 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3251 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3252 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3253 } else { 3254 int endStyle; 3255 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3256 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3257 } else { 3258 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3259 } 3260 3261 Runnable onComplete = new Runnable() { 3262 @Override 3263 public void run() { 3264 if (finalView != null) { 3265 finalView.setVisibility(VISIBLE); 3266 } 3267 if (onCompleteRunnable != null) { 3268 onCompleteRunnable.run(); 3269 } 3270 } 3271 }; 3272 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3273 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3274 duration, this); 3275 } 3276 } 3277 3278 public void setFinalTransitionTransform(CellLayout layout) { 3279 if (isSwitchingState()) { 3280 int index = indexOfChild(layout); 3281 mCurrentScaleX = layout.getScaleX(); 3282 mCurrentScaleY = layout.getScaleY(); 3283 mCurrentTranslationX = layout.getTranslationX(); 3284 mCurrentTranslationY = layout.getTranslationY(); 3285 mCurrentRotationY = layout.getRotationY(); 3286 layout.setScaleX(mNewScaleXs[index]); 3287 layout.setScaleY(mNewScaleYs[index]); 3288 layout.setTranslationX(mNewTranslationXs[index]); 3289 layout.setTranslationY(mNewTranslationYs[index]); 3290 layout.setRotationY(mNewRotationYs[index]); 3291 } 3292 } 3293 public void resetTransitionTransform(CellLayout layout) { 3294 if (isSwitchingState()) { 3295 mCurrentScaleX = layout.getScaleX(); 3296 mCurrentScaleY = layout.getScaleY(); 3297 mCurrentTranslationX = layout.getTranslationX(); 3298 mCurrentTranslationY = layout.getTranslationY(); 3299 mCurrentRotationY = layout.getRotationY(); 3300 layout.setScaleX(mCurrentScaleX); 3301 layout.setScaleY(mCurrentScaleY); 3302 layout.setTranslationX(mCurrentTranslationX); 3303 layout.setTranslationY(mCurrentTranslationY); 3304 layout.setRotationY(mCurrentRotationY); 3305 } 3306 } 3307 3308 /** 3309 * Return the current {@link CellLayout}, correctly picking the destination 3310 * screen while a scroll is in progress. 3311 */ 3312 public CellLayout getCurrentDropLayout() { 3313 return (CellLayout) getChildAt(getNextPage()); 3314 } 3315 3316 /** 3317 * Return the current CellInfo describing our current drag; this method exists 3318 * so that Launcher can sync this object with the correct info when the activity is created/ 3319 * destroyed 3320 * 3321 */ 3322 public CellLayout.CellInfo getDragInfo() { 3323 return mDragInfo; 3324 } 3325 3326 /** 3327 * Calculate the nearest cell where the given object would be dropped. 3328 * 3329 * pixelX and pixelY should be in the coordinate system of layout 3330 */ 3331 private int[] findNearestArea(int pixelX, int pixelY, 3332 int spanX, int spanY, CellLayout layout, int[] recycle) { 3333 return layout.findNearestArea( 3334 pixelX, pixelY, spanX, spanY, recycle); 3335 } 3336 3337 void setup(DragController dragController) { 3338 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3339 mDragController = dragController; 3340 3341 // hardware layers on children are enabled on startup, but should be disabled until 3342 // needed 3343 updateChildrenLayersEnabled(); 3344 setWallpaperDimension(); 3345 } 3346 3347 /** 3348 * Called at the end of a drag which originated on the workspace. 3349 */ 3350 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3351 boolean success) { 3352 if (success) { 3353 if (target != this) { 3354 if (mDragInfo != null) { 3355 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3356 if (mDragInfo.cell instanceof DropTarget) { 3357 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3358 } 3359 } 3360 } 3361 } else if (mDragInfo != null) { 3362 CellLayout cellLayout; 3363 if (mLauncher.isHotseatLayout(target)) { 3364 cellLayout = mLauncher.getHotseat().getLayout(); 3365 } else { 3366 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3367 } 3368 cellLayout.onDropChild(mDragInfo.cell); 3369 } 3370 if (d.cancelled && mDragInfo.cell != null) { 3371 mDragInfo.cell.setVisibility(VISIBLE); 3372 } 3373 mDragOutline = null; 3374 mDragInfo = null; 3375 3376 // Hide the scrolling indicator after you pick up an item 3377 hideScrollingIndicator(false); 3378 } 3379 3380 void updateItemLocationsInDatabase(CellLayout cl) { 3381 int count = cl.getShortcutsAndWidgets().getChildCount(); 3382 3383 int screen = indexOfChild(cl); 3384 int container = Favorites.CONTAINER_DESKTOP; 3385 3386 if (mLauncher.isHotseatLayout(cl)) { 3387 screen = -1; 3388 container = Favorites.CONTAINER_HOTSEAT; 3389 } 3390 3391 for (int i = 0; i < count; i++) { 3392 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3393 ItemInfo info = (ItemInfo) v.getTag(); 3394 // Null check required as the AllApps button doesn't have an item info 3395 if (info != null) { 3396 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3397 info.cellY, info.spanX, info.spanY); 3398 } 3399 } 3400 } 3401 3402 @Override 3403 public boolean supportsFlingToDelete() { 3404 return true; 3405 } 3406 3407 @Override 3408 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3409 // Do nothing 3410 } 3411 3412 @Override 3413 public void onFlingToDeleteCompleted() { 3414 // Do nothing 3415 } 3416 3417 public boolean isDropEnabled() { 3418 return true; 3419 } 3420 3421 @Override 3422 protected void onRestoreInstanceState(Parcelable state) { 3423 super.onRestoreInstanceState(state); 3424 Launcher.setScreen(mCurrentPage); 3425 } 3426 3427 @Override 3428 public void scrollLeft() { 3429 if (!isSmall() && !mIsSwitchingState) { 3430 super.scrollLeft(); 3431 } 3432 Folder openFolder = getOpenFolder(); 3433 if (openFolder != null) { 3434 openFolder.completeDragExit(); 3435 } 3436 } 3437 3438 @Override 3439 public void scrollRight() { 3440 if (!isSmall() && !mIsSwitchingState) { 3441 super.scrollRight(); 3442 } 3443 Folder openFolder = getOpenFolder(); 3444 if (openFolder != null) { 3445 openFolder.completeDragExit(); 3446 } 3447 } 3448 3449 @Override 3450 public boolean onEnterScrollArea(int x, int y, int direction) { 3451 // Ignore the scroll area if we are dragging over the hot seat 3452 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3453 if (mLauncher.getHotseat() != null && isPortrait) { 3454 Rect r = new Rect(); 3455 mLauncher.getHotseat().getHitRect(r); 3456 if (r.contains(x, y)) { 3457 return false; 3458 } 3459 } 3460 3461 boolean result = false; 3462 if (!isSmall() && !mIsSwitchingState) { 3463 mInScrollArea = true; 3464 3465 final int page = getNextPage() + 3466 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3467 3468 // We always want to exit the current layout to ensure parity of enter / exit 3469 setCurrentDropLayout(null); 3470 3471 if (0 <= page && page < getChildCount()) { 3472 CellLayout layout = (CellLayout) getChildAt(page); 3473 setCurrentDragOverlappingLayout(layout); 3474 3475 // Workspace is responsible for drawing the edge glow on adjacent pages, 3476 // so we need to redraw the workspace when this may have changed. 3477 invalidate(); 3478 result = true; 3479 } 3480 } 3481 return result; 3482 } 3483 3484 @Override 3485 public boolean onExitScrollArea() { 3486 boolean result = false; 3487 if (mInScrollArea) { 3488 invalidate(); 3489 CellLayout layout = getCurrentDropLayout(); 3490 setCurrentDropLayout(layout); 3491 setCurrentDragOverlappingLayout(layout); 3492 3493 result = true; 3494 mInScrollArea = false; 3495 } 3496 return result; 3497 } 3498 3499 private void onResetScrollArea() { 3500 setCurrentDragOverlappingLayout(null); 3501 mInScrollArea = false; 3502 } 3503 3504 /** 3505 * Returns a specific CellLayout 3506 */ 3507 CellLayout getParentCellLayoutForView(View v) { 3508 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3509 for (CellLayout layout : layouts) { 3510 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3511 return layout; 3512 } 3513 } 3514 return null; 3515 } 3516 3517 /** 3518 * Returns a list of all the CellLayouts in the workspace. 3519 */ 3520 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3521 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3522 int screenCount = getChildCount(); 3523 for (int screen = 0; screen < screenCount; screen++) { 3524 layouts.add(((CellLayout) getChildAt(screen))); 3525 } 3526 if (mLauncher.getHotseat() != null) { 3527 layouts.add(mLauncher.getHotseat().getLayout()); 3528 } 3529 return layouts; 3530 } 3531 3532 /** 3533 * We should only use this to search for specific children. Do not use this method to modify 3534 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3535 * the hotseat and workspace pages 3536 */ 3537 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3538 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3539 new ArrayList<ShortcutAndWidgetContainer>(); 3540 int screenCount = getChildCount(); 3541 for (int screen = 0; screen < screenCount; screen++) { 3542 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3543 } 3544 if (mLauncher.getHotseat() != null) { 3545 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3546 } 3547 return childrenLayouts; 3548 } 3549 3550 public Folder getFolderForTag(Object tag) { 3551 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3552 getAllShortcutAndWidgetContainers(); 3553 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3554 int count = layout.getChildCount(); 3555 for (int i = 0; i < count; i++) { 3556 View child = layout.getChildAt(i); 3557 if (child instanceof Folder) { 3558 Folder f = (Folder) child; 3559 if (f.getInfo() == tag && f.getInfo().opened) { 3560 return f; 3561 } 3562 } 3563 } 3564 } 3565 return null; 3566 } 3567 3568 public View getViewForTag(Object tag) { 3569 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3570 getAllShortcutAndWidgetContainers(); 3571 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3572 int count = layout.getChildCount(); 3573 for (int i = 0; i < count; i++) { 3574 View child = layout.getChildAt(i); 3575 if (child.getTag() == tag) { 3576 return child; 3577 } 3578 } 3579 } 3580 return null; 3581 } 3582 3583 void clearDropTargets() { 3584 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3585 getAllShortcutAndWidgetContainers(); 3586 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3587 int childCount = layout.getChildCount(); 3588 for (int j = 0; j < childCount; j++) { 3589 View v = layout.getChildAt(j); 3590 if (v instanceof DropTarget) { 3591 mDragController.removeDropTarget((DropTarget) v); 3592 } 3593 } 3594 } 3595 } 3596 3597 void removeItems(final ArrayList<ApplicationInfo> apps) { 3598 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3599 3600 final HashSet<String> packageNames = new HashSet<String>(); 3601 final int appCount = apps.size(); 3602 for (int i = 0; i < appCount; i++) { 3603 packageNames.add(apps.get(i).componentName.getPackageName()); 3604 } 3605 3606 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3607 for (final CellLayout layoutParent: cellLayouts) { 3608 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3609 3610 // Avoid ANRs by treating each screen separately 3611 post(new Runnable() { 3612 public void run() { 3613 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3614 childrenToRemove.clear(); 3615 3616 int childCount = layout.getChildCount(); 3617 for (int j = 0; j < childCount; j++) { 3618 final View view = layout.getChildAt(j); 3619 Object tag = view.getTag(); 3620 3621 if (tag instanceof ShortcutInfo) { 3622 final ShortcutInfo info = (ShortcutInfo) tag; 3623 final Intent intent = info.intent; 3624 final ComponentName name = intent.getComponent(); 3625 3626 if (name != null) { 3627 if (packageNames.contains(name.getPackageName())) { 3628 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3629 childrenToRemove.add(view); 3630 } 3631 } 3632 } else if (tag instanceof FolderInfo) { 3633 final FolderInfo info = (FolderInfo) tag; 3634 final ArrayList<ShortcutInfo> contents = info.contents; 3635 final int contentsCount = contents.size(); 3636 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3637 new ArrayList<ShortcutInfo>(); 3638 3639 for (int k = 0; k < contentsCount; k++) { 3640 final ShortcutInfo appInfo = contents.get(k); 3641 final Intent intent = appInfo.intent; 3642 final ComponentName name = intent.getComponent(); 3643 3644 if (name != null) { 3645 if (packageNames.contains(name.getPackageName())) { 3646 appsToRemoveFromFolder.add(appInfo); 3647 } 3648 } 3649 } 3650 for (ShortcutInfo item: appsToRemoveFromFolder) { 3651 info.remove(item); 3652 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3653 } 3654 } else if (tag instanceof LauncherAppWidgetInfo) { 3655 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3656 final ComponentName provider = info.providerName; 3657 if (provider != null) { 3658 if (packageNames.contains(provider.getPackageName())) { 3659 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3660 childrenToRemove.add(view); 3661 } 3662 } 3663 } 3664 } 3665 3666 childCount = childrenToRemove.size(); 3667 for (int j = 0; j < childCount; j++) { 3668 View child = childrenToRemove.get(j); 3669 // Note: We can not remove the view directly from CellLayoutChildren as this 3670 // does not re-mark the spaces as unoccupied. 3671 layoutParent.removeViewInLayout(child); 3672 if (child instanceof DropTarget) { 3673 mDragController.removeDropTarget((DropTarget)child); 3674 } 3675 } 3676 3677 if (childCount > 0) { 3678 layout.requestLayout(); 3679 layout.invalidate(); 3680 } 3681 } 3682 }); 3683 } 3684 3685 // It is no longer the case the BubbleTextViews correspond 1:1 with the workspace items in 3686 // the database (and LauncherModel) since shortcuts are not added and animated in until 3687 // the user returns to launcher. As a result, we really should be cleaning up the Db 3688 // regardless of whether the item was added or not (unlike the logic above). This is only 3689 // relevant for direct workspace items. 3690 post(new Runnable() { 3691 @Override 3692 public void run() { 3693 String spKey = LauncherApplication.getSharedPreferencesKey(); 3694 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3695 Context.MODE_PRIVATE); 3696 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3697 null); 3698 3699 for (String packageName: packageNames) { 3700 // Remove all items that have the same package, but were not removed above 3701 ArrayList<ShortcutInfo> infos = 3702 mLauncher.getModel().getShortcutInfosForPackage(packageName); 3703 for (ShortcutInfo info : infos) { 3704 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3705 } 3706 // Remove all queued items that match the same package 3707 if (newApps != null) { 3708 for (String intentStr : newApps) { 3709 try { 3710 Intent intent = Intent.parseUri(intentStr, 0); 3711 if (packageNames.contains(intent.getComponent().getPackageName())) { 3712 newApps.remove(intentStr); 3713 } 3714 } catch (URISyntaxException e) {} 3715 } 3716 } 3717 } 3718 } 3719 }); 3720 } 3721 3722 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3723 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3724 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3725 int childCount = layout.getChildCount(); 3726 for (int j = 0; j < childCount; j++) { 3727 final View view = layout.getChildAt(j); 3728 Object tag = view.getTag(); 3729 if (tag instanceof ShortcutInfo) { 3730 ShortcutInfo info = (ShortcutInfo) tag; 3731 // We need to check for ACTION_MAIN otherwise getComponent() might 3732 // return null for some shortcuts (for instance, for shortcuts to 3733 // web pages.) 3734 final Intent intent = info.intent; 3735 final ComponentName name = intent.getComponent(); 3736 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3737 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3738 final int appCount = apps.size(); 3739 for (int k = 0; k < appCount; k++) { 3740 ApplicationInfo app = apps.get(k); 3741 if (app.componentName.equals(name)) { 3742 BubbleTextView shortcut = (BubbleTextView) view; 3743 info.updateIcon(mIconCache); 3744 info.title = app.title.toString(); 3745 shortcut.applyFromShortcutInfo(info, mIconCache); 3746 } 3747 } 3748 } 3749 } 3750 } 3751 } 3752 } 3753 3754 void moveToDefaultScreen(boolean animate) { 3755 if (!isSmall()) { 3756 if (animate) { 3757 snapToPage(mDefaultPage); 3758 } else { 3759 setCurrentPage(mDefaultPage); 3760 } 3761 } 3762 getChildAt(mDefaultPage).requestFocus(); 3763 } 3764 3765 @Override 3766 public void syncPages() { 3767 } 3768 3769 @Override 3770 public void syncPageItems(int page, boolean immediate) { 3771 } 3772 3773 @Override 3774 protected String getCurrentPageDescription() { 3775 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3776 return String.format(getContext().getString(R.string.workspace_scroll_format), 3777 page + 1, getChildCount()); 3778 } 3779 3780 public void getLocationInDragLayer(int[] loc) { 3781 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3782 } 3783 3784 void setFadeForOverScroll(float fade) { 3785 if (!isScrollingIndicatorEnabled()) return; 3786 3787 mOverscrollFade = fade; 3788 float reducedFade = 0.5f + 0.5f * (1 - fade); 3789 final ViewGroup parent = (ViewGroup) getParent(); 3790 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3791 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3792 final View scrollIndicator = getScrollingIndicator(); 3793 3794 cancelScrollingIndicatorAnimations(); 3795 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3796 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3797 scrollIndicator.setAlpha(1 - fade); 3798 } 3799} 3800