/* * Copyright (C) 2008 The Android Open Source Project * Copytight (C) 2011 The CyanogenMod Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.cyanogenmod.trebuchet; import android.animation.Animator; import android.animation.AnimatorSet; import android.animation.ObjectAnimator; import android.animation.TimeInterpolator; import android.animation.ValueAnimator; import android.animation.ValueAnimator.AnimatorUpdateListener; import android.app.WallpaperManager; import android.appwidget.AppWidgetHostView; import android.appwidget.AppWidgetManager; import android.appwidget.AppWidgetProviderInfo; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Configuration; import android.content.res.Resources; import android.content.res.TypedArray; import android.graphics.Bitmap; import android.graphics.Camera; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.Point; import android.graphics.PointF; import android.graphics.Rect; import android.graphics.Region.Op; import android.graphics.drawable.Drawable; import android.os.IBinder; import android.os.Parcelable; import android.util.AttributeSet; import android.util.DisplayMetrics; import android.util.Log; import android.view.Display; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.animation.DecelerateInterpolator; import android.widget.ImageView; import android.widget.TextView; import com.cyanogenmod.trebuchet.R; import com.cyanogenmod.trebuchet.FolderIcon.FolderRingAnimator; import com.cyanogenmod.trebuchet.LauncherSettings.Favorites; import com.cyanogenmod.trebuchet.preference.PreferencesProvider; import java.net.URISyntaxException; import java.util.ArrayList; import java.util.HashSet; import java.util.Iterator; import java.util.Set; /** * The workspace is a wide area with a wallpaper and a finite number of pages. * Each page contains a number of icons, folders or widgets the user can * interact with. A workspace is meant to be used with a fixed width only. */ public class Workspace extends SmoothPagedView implements DropTarget, DragSource, DragScroller, View.OnTouchListener, DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { private static final String TAG = "Launcher.Workspace"; // Y rotation to apply to the workspace screens private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; private static final int BACKGROUND_FADE_OUT_DURATION = 350; private static final int ADJACENT_SCREEN_DROP_DURATION = 300; private static final int FLING_THRESHOLD_VELOCITY = 500; // These animators are used to fade the children's outlines private ObjectAnimator mChildrenOutlineFadeInAnimation; private ObjectAnimator mChildrenOutlineFadeOutAnimation; private float mChildrenOutlineAlpha = 0; // These properties refer to the background protection gradient used for AllApps and Customize private ValueAnimator mBackgroundFadeInAnimation; private ValueAnimator mBackgroundFadeOutAnimation; private Drawable mBackground; boolean mDrawBackground = true; private float mBackgroundAlpha = 0; private float mOverScrollMaxBackgroundAlpha = 0.0f; private float mWallpaperScrollRatio = 1.0f; private final WallpaperManager mWallpaperManager; private IBinder mWindowToken; private static final float WALLPAPER_SCREENS_SPAN = 2f; /** * CellInfo for the cell that is currently being dragged */ private CellLayout.CellInfo mDragInfo; /** * Target drop area calculated during last acceptDrop call. */ private int[] mTargetCell = new int[2]; private int mDragOverX = -1; private int mDragOverY = -1; static Rect mLandscapeCellLayoutMetrics = null; static Rect mPortraitCellLayoutMetrics = null; /** * The CellLayout that is currently being dragged over */ private CellLayout mDragTargetLayout = null; /** * The CellLayout that we will show as glowing */ private CellLayout mDragOverlappingLayout = null; /** * The CellLayout which will be dropped to */ private CellLayout mDropToLayout = null; private Launcher mLauncher; private IconCache mIconCache; private DragController mDragController; // These are temporary variables to prevent having to allocate a new object just to // return an (x, y) value from helper functions. Do NOT use them to maintain other state. private int[] mTempCell = new int[2]; private int[] mTempEstimate = new int[2]; private float[] mDragViewVisualCenter = new float[2]; private float[] mTempDragCoordinates = new float[2]; private float[] mTempCellLayoutCenterCoordinates = new float[2]; private float[] mTempDragBottomRightCoordinates = new float[2]; private Matrix mTempInverseMatrix = new Matrix(); private SpringLoadedDragController mSpringLoadedDragController; private float mSpringLoadedShrinkFactor; // State variable that indicates whether the pages are small (ie when you're // in all apps or customize mode) enum State { NORMAL, SPRING_LOADED, SMALL }; private State mState = State.NORMAL; private boolean mIsSwitchingState = false; boolean mAnimatingViewIntoPlace = false; boolean mIsDragOccuring = false; boolean mChildrenLayersEnabled = true; /** Is the user is dragging an item near the edge of a page? */ private boolean mInScrollArea = false; private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); private Bitmap mDragOutline = null; private final Rect mTempRect = new Rect(); private final int[] mTempXY = new int[2]; private float mOverscrollFade = 0; private boolean mOverscrollTransformsSet; public static final int DRAG_BITMAP_PADDING = 2; private boolean mWorkspaceFadeInAdjacentScreens; // Camera and Matrix used to determine the final position of a neighboring CellLayout private final Matrix mMatrix = new Matrix(); private final Camera mCamera = new Camera(); private final float mTempFloat2[] = new float[2]; enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; int mWallpaperWidth; int mWallpaperHeight; WallpaperOffsetInterpolator mWallpaperOffset; boolean mUpdateWallpaperOffsetImmediately = false; private Runnable mDelayedResizeRunnable; private Runnable mDelayedSnapToPageRunnable; private Point mDisplaySize = new Point(); private boolean mIsStaticWallpaper; private int mWallpaperTravelWidth; private int mSpringLoadedPageSpacing; private int mCameraDistance; // Variables relating to the creation of user folders by hovering shortcuts over shortcuts private static final int FOLDER_CREATION_TIMEOUT = 0; private static final int REORDER_TIMEOUT = 250; private final Alarm mFolderCreationAlarm = new Alarm(); private final Alarm mReorderAlarm = new Alarm(); private FolderRingAnimator mDragFolderRingAnimator = null; private FolderIcon mDragOverFolderIcon = null; private boolean mCreateUserFolderOnDrop = false; private boolean mAddToExistingFolderOnDrop = false; private DropTarget.DragEnforcer mDragEnforcer; private float mMaxDistanceForFolderCreation; // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) private float mXDown; private float mYDown; final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; final static float TOUCH_SLOP_DAMPING_FACTOR = 4; // Relating to the animation of items being dropped externally public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; // Related to dragging, folder creation and reordering private static final int DRAG_MODE_NONE = 0; private static final int DRAG_MODE_CREATE_FOLDER = 1; private static final int DRAG_MODE_ADD_TO_FOLDER = 2; private static final int DRAG_MODE_REORDER = 3; private int mDragMode = DRAG_MODE_NONE; private int mLastReorderX = -1; private int mLastReorderY = -1; // These variables are used for storing the initial and final values during workspace animations private int mSavedScrollX; private float mSavedRotationY; private float mSavedTranslationX; private float mCurrentScaleX; private float mCurrentScaleY; private float mCurrentRotationY; private float mCurrentTranslationX; private float mCurrentTranslationY; private float[] mOldTranslationXs; private float[] mOldTranslationYs; private float[] mOldScaleXs; private float[] mOldScaleYs; private float[] mOldBackgroundAlphas; private float[] mOldAlphas; private float[] mNewTranslationXs; private float[] mNewTranslationYs; private float[] mNewScaleXs; private float[] mNewScaleYs; private float[] mNewBackgroundAlphas; private float[] mNewAlphas; private float[] mNewRotationYs; private float mTransitionProgress; // Preferences private int mNumberHomescreens; private int mDefaultHomescreen; private int mScreenPaddingVertical; private int mScreenPaddingHorizontal; private boolean mShowSearchBar; private boolean mResizeAnyWidget; private boolean mHideIconLabels; private boolean mScrollWallpaper; private boolean mShowScrollingIndicator; private boolean mFadeScrollingIndicator; private boolean mShowDockDivider; /** * Used to inflate the Workspace from XML. * * @param context The application's context. * @param attrs The attributes set containing the Workspace's customization values. */ public Workspace(Context context, AttributeSet attrs) { this(context, attrs, 0); } /** * Used to inflate the Workspace from XML. * * @param context The application's context. * @param attrs The attributes set containing the Workspace's customization values. * @param defStyle Unused. */ public Workspace(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); mContentIsRefreshable = false; mDragEnforcer = new DropTarget.DragEnforcer(context); // With workspace, data is available straight from the get-go setDataIsReady(); final Resources res = getResources(); mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); mFadeInAdjacentScreens = false; mWallpaperManager = WallpaperManager.getInstance(context); int cellCountX = context.getResources().getInteger(R.integer.cell_count_x); int cellCountY = context.getResources().getInteger(R.integer.cell_count_y); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.Workspace, defStyle, 0); if (LauncherApplication.isScreenLarge()) { int[] cellCount = getCellCountsForLarge(context); cellCountX = cellCount[0]; cellCountY = cellCount[1]; } mSpringLoadedShrinkFactor = res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; mSpringLoadedPageSpacing = res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); mCameraDistance = res.getInteger(R.integer.config_cameraDistance); // if the value is manually specified, use that instead cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); a.recycle(); setOnHierarchyChangeListener(this); // if there is a value set it the preferences, use that instead if ((!LauncherApplication.isScreenLarge()) || (getResources().getBoolean(R.bool.config_workspaceTabletGrid) == true)) { cellCountX = PreferencesProvider.Interface.Homescreen.getCellCountX(context, cellCountX); cellCountY = PreferencesProvider.Interface.Homescreen.getCellCountY(context, cellCountY); } LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); setHapticFeedbackEnabled(false); // Preferences mNumberHomescreens = PreferencesProvider.Interface.Homescreen.getNumberHomescreens(context); mDefaultHomescreen = PreferencesProvider.Interface.Homescreen.getDefaultHomescreen(context, mNumberHomescreens / 2); if (mDefaultHomescreen >= mNumberHomescreens) { mDefaultHomescreen = mNumberHomescreens / 2; } mScreenPaddingVertical = PreferencesProvider.Interface.Homescreen.getScreenPaddingVertical(context); mScreenPaddingHorizontal = PreferencesProvider.Interface.Homescreen.getScreenPaddingHorizontal(context); mShowSearchBar = PreferencesProvider.Interface.Homescreen.getShowSearchBar(context); mResizeAnyWidget = PreferencesProvider.Interface.Homescreen.getResizeAnyWidget(context); mHideIconLabels = PreferencesProvider.Interface.Homescreen.getHideIconLabels(context); mScrollWallpaper = PreferencesProvider.Interface.Homescreen.Scrolling.getScrollWallpaper(context); mShowScrollingIndicator = PreferencesProvider.Interface.Homescreen.Indicator.getShowScrollingIndicator(context); mFadeScrollingIndicator = PreferencesProvider.Interface.Homescreen.Indicator.getFadeScrollingIndicator(context); mShowDockDivider = PreferencesProvider.Interface.Homescreen.Indicator.getShowDockDivider(context); mLauncher = (Launcher) context; initWorkspace(); // Disable multitouch across the workspace/all apps/customize tray setMotionEventSplittingEnabled(true); // Unless otherwise specified this view is important for accessibility. if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); } } public static int[] getCellCountsForLarge(Context context) { int[] cellCount = new int[2]; final Resources res = context.getResources(); // Determine number of rows/columns dynamically // TODO: This code currently fails on tablets with an aspect ratio < 1.3. // Around that ratio we should make cells the same size in portrait and // landscape TypedArray actionBarSizeTypedArray = context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); DisplayMetrics displayMetrics = res.getDisplayMetrics(); final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * displayMetrics.density; cellCount[0] = 1; while (CellLayout.widthInPortrait(res, cellCount[0] + 1) <= smallestScreenDim) { cellCount[0]++; } cellCount[1] = 1; while (actionBarHeight + CellLayout.heightInLandscape(res, cellCount[1] + 1) <= smallestScreenDim - systemBarHeight) { cellCount[1]++; } return cellCount; } // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each // dimension if unsuccessful public int[] estimateItemSize(int hSpan, int vSpan, ItemInfo itemInfo, boolean springLoaded) { int[] size = new int[2]; if (getChildCount() > 0) { CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); size[0] = r.width(); size[1] = r.height(); if (springLoaded) { size[0] *= mSpringLoadedShrinkFactor; size[1] *= mSpringLoadedShrinkFactor; } return size; } else { size[0] = Integer.MAX_VALUE; size[1] = Integer.MAX_VALUE; return size; } } public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, int hCell, int vCell, int hSpan, int vSpan) { Rect r = new Rect(); cl.cellToRect(hCell, vCell, hSpan, vSpan, r); return r; } public void buildPageHardwareLayers() { if (getWindowToken() != null) { final int childCount = getChildCount(); for (int i = 0; i < childCount; i++) { CellLayout cl = (CellLayout) getChildAt(i); cl.getShortcutsAndWidgets().buildLayer(); } } } public void onDragStart(DragSource source, Object info, int dragAction) { mIsDragOccuring = true; updateChildrenLayersEnabled(); mLauncher.lockScreenOrientation(); setChildrenBackgroundAlphaMultipliers(1f); // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging InstallShortcutReceiver.enableInstallQueue(); UninstallShortcutReceiver.enableUninstallQueue(); } public void onDragEnd() { mIsDragOccuring = false; updateChildrenLayersEnabled(); mLauncher.unlockScreenOrientation(false); // Re-enable any Un/InstallShortcutReceiver and now process any queued items InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); } /** * Initializes various states for this workspace. */ protected void initWorkspace() { Context context = getContext(); mCurrentPage = mDefaultHomescreen; Launcher.setScreen(mCurrentPage); LauncherApplication app = (LauncherApplication)context.getApplicationContext(); mIconCache = app.getIconCache(); setWillNotDraw(false); setChildrenDrawnWithCacheEnabled(true); final Resources res = getResources(); LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); for (int i = 0; i < mNumberHomescreens; i++) { View screen = inflater.inflate(R.layout.workspace_screen, null); screen.setPadding(screen.getPaddingLeft() + mScreenPaddingHorizontal, screen.getPaddingTop() + mScreenPaddingVertical, screen.getPaddingRight() + mScreenPaddingHorizontal, screen.getPaddingBottom() + mScreenPaddingVertical); addView(screen); } try { mBackground = res.getDrawable(R.drawable.apps_customize_bg); } catch (Resources.NotFoundException e) { // In this case, we will skip drawing background protection } if (!mShowSearchBar) { int paddingTop = 0; if (mLauncher.getCurrentOrientation() == Configuration.ORIENTATION_PORTRAIT) { paddingTop = (int)res.getDimension(R.dimen.qsb_bar_hidden_inset); } setPadding(0, paddingTop, getPaddingRight(), getPaddingBottom()); } if (!mShowScrollingIndicator) { disableScrollingIndicator(); } mWallpaperOffset = new WallpaperOffsetInterpolator(); Display display = mLauncher.getWindowManager().getDefaultDisplay(); display.getSize(mDisplaySize); if (mScrollWallpaper) { mWallpaperTravelWidth = (int) (mDisplaySize.x * wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); } mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); } @Override protected int getScrollMode() { return SmoothPagedView.X_LARGE_MODE; } @Override public void onChildViewAdded(View parent, View child) { if (!(child instanceof CellLayout)) { throw new IllegalArgumentException("A Workspace can only have CellLayout children."); } CellLayout cl = ((CellLayout) child); cl.setOnInterceptTouchListener(this); cl.setClickable(true); cl.enableHardwareLayers(); cl.setContentDescription(getContext().getString( R.string.workspace_description_format, getChildCount())); } @Override public void onChildViewRemoved(View parent, View child) { } protected boolean shouldDrawChild(View child) { final CellLayout cl = (CellLayout) child; return super.shouldDrawChild(child) && (cl.getShortcutsAndWidgets().getAlpha() > 0 || cl.getBackgroundAlpha() > 0); } /** * @return The open folder on the current screen, or null if there is none */ Folder getOpenFolder() { DragLayer dragLayer = mLauncher.getDragLayer(); int count = dragLayer.getChildCount(); for (int i = 0; i < count; i++) { View child = dragLayer.getChildAt(i); if (child instanceof Folder) { Folder folder = (Folder) child; if (folder.getInfo().opened) return folder; } } return null; } boolean isTouchActive() { return mTouchState != TOUCH_STATE_REST; } /** * Adds the specified child in the specified screen. The position and dimension of * the child are defined by x, y, spanX and spanY. * * @param child The child to add in one of the workspace's screens. * @param screen The screen in which to add the child. * @param x The X position of the child in the screen's grid. * @param y The Y position of the child in the screen's grid. * @param spanX The number of cells spanned horizontally by the child. * @param spanY The number of cells spanned vertically by the child. */ void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { addInScreen(child, container, screen, x, y, spanX, spanY, false); } /** * Adds the specified child in the specified screen. The position and dimension of * the child are defined by x, y, spanX and spanY. * * @param child The child to add in one of the workspace's screens. * @param screen The screen in which to add the child. * @param x The X position of the child in the screen's grid. * @param y The Y position of the child in the screen's grid. * @param spanX The number of cells spanned horizontally by the child. * @param spanY The number of cells spanned vertically by the child. * @param insert When true, the child is inserted at the beginning of the children list. */ void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, boolean insert) { if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { if (screen < 0 || screen >= getChildCount()) { Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() + " (was " + screen + "); skipping child"); return; } } final CellLayout layout; if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { layout = mLauncher.getHotseat().getLayout(); child.setOnKeyListener(null); if (!mHideIconLabels) { // Hide titles in the hotseat if (child instanceof FolderIcon) { ((FolderIcon) child).setTextVisible(false); } else if (child instanceof BubbleTextView) { ((BubbleTextView) child).setTextVisible(false); } } if (screen < 0) { screen = mLauncher.getHotseat().getOrderInHotseat(x, y); } else { // Note: We do this to ensure that the hotseat is always laid out in the orientation // of the hotseat in order regardless of which orientation they were added x = mLauncher.getHotseat().getCellXFromOrder(screen); y = mLauncher.getHotseat().getCellYFromOrder(screen); } } else { if (!mHideIconLabels) { // Show titles if not in the hotseat if (child instanceof FolderIcon) { ((FolderIcon) child).setTextVisible(true); } else if (child instanceof BubbleTextView) { ((BubbleTextView) child).setTextVisible(true); } } layout = (CellLayout) getChildAt(screen); child.setOnKeyListener(new IconKeyEventListener()); } LayoutParams genericLp = child.getLayoutParams(); CellLayout.LayoutParams lp; if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { lp = new CellLayout.LayoutParams(x, y, spanX, spanY); } else { lp = (CellLayout.LayoutParams) genericLp; lp.cellX = x; lp.cellY = y; lp.cellHSpan = spanX; lp.cellVSpan = spanY; } if (spanX < 0 && spanY < 0) { lp.isLockedToGrid = false; } // Get the canonical child id to uniquely represent this view in this screen int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); boolean markCellsAsOccupied = !(child instanceof Folder); if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { // TODO: This branch occurs when the workspace is adding views // outside of the defined grid // maybe we should be deleting these items from the LauncherModel? Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); } if (!(child instanceof Folder)) { child.setHapticFeedbackEnabled(false); child.setOnLongClickListener(mLongClickListener); } if (child instanceof DropTarget) { mDragController.addDropTarget((DropTarget) child); } } /** * Check if the point (x, y) hits a given page. */ private boolean hitsPage(int index, float x, float y) { final View page = getChildAt(index); if (page != null) { float[] localXY = { x, y }; mapPointFromSelfToChild(page, localXY); return (localXY[0] >= 0 && localXY[0] < page.getWidth() && localXY[1] >= 0 && localXY[1] < page.getHeight()); } return false; } @Override protected boolean hitsPreviousPage(float x, float y) { // mNextPage is set to INVALID_PAGE whenever we are stationary. // Calculating "next page" this way ensures that you scroll to whatever page you tap on final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; // Only allow tap to next page on large devices, where there's significant margin outside // the active workspace return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); } @Override protected boolean hitsNextPage(float x, float y) { // mNextPage is set to INVALID_PAGE whenever we are stationary. // Calculating "next page" this way ensures that you scroll to whatever page you tap on final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; // Only allow tap to next page on large devices, where there's significant margin outside // the active workspace return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); } /** * Called directly from a CellLayout (not by the framework), after we've been added as a * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout * that it should intercept touch events, which is not something that is normally supported. */ @Override public boolean onTouch(View v, MotionEvent event) { return (isSmall() || !isFinishedSwitchingState()); } public boolean isSwitchingState() { return mIsSwitchingState; } /** This differs from isSwitchingState in that we take into account how far the transition * has completed. */ public boolean isFinishedSwitchingState() { return !mIsSwitchingState || (mTransitionProgress > 0.5f); } protected void onWindowVisibilityChanged (int visibility) { mLauncher.onWindowVisibilityChanged(visibility); } @Override public boolean dispatchUnhandledMove(View focused, int direction) { if (isSmall() || !isFinishedSwitchingState()) { // when the home screens are shrunken, shouldn't allow side-scrolling return false; } return super.dispatchUnhandledMove(focused, direction); } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { switch (ev.getAction() & MotionEvent.ACTION_MASK) { case MotionEvent.ACTION_DOWN: mXDown = ev.getX(); mYDown = ev.getY(); break; case MotionEvent.ACTION_POINTER_UP: case MotionEvent.ACTION_UP: if (mTouchState == TOUCH_STATE_REST) { final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); if (!currentPage.lastDownOnOccupiedCell()) { onWallpaperTap(ev); } } } return super.onInterceptTouchEvent(ev); } protected void reinflateWidgetsIfNecessary() { final int clCount = getChildCount(); for (int i = 0; i < clCount; i++) { CellLayout cl = (CellLayout) getChildAt(i); ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); final int itemCount = swc.getChildCount(); for (int j = 0; j < itemCount; j++) { View v = swc.getChildAt(j); if (v.getTag() instanceof LauncherAppWidgetInfo) { LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; if (lahv != null && lahv.orientationChangedSincedInflation()) { mLauncher.removeAppWidget(info); // Remove the current widget which is inflated with the wrong orientation cl.removeView(lahv); mLauncher.bindAppWidget(info); } } } } } @Override protected void determineScrollingStart(MotionEvent ev) { if (isSmall()) return; if (!isFinishedSwitchingState()) return; float deltaX = Math.abs(ev.getX() - mXDown); float deltaY = Math.abs(ev.getY() - mYDown); if (Float.compare(deltaX, 0f) == 0) return; float slope = deltaY / deltaX; float theta = (float) Math.atan(slope); if (deltaX > mTouchSlop || deltaY > mTouchSlop) { cancelCurrentPageLongPress(); } if (theta > MAX_SWIPE_ANGLE) { // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace return; } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to // increase the touch slop to make it harder to begin scrolling the workspace. This // results in vertically scrolling widgets to more easily. The higher the angle, the // more we increase touch slop. theta -= START_DAMPING_TOUCH_SLOP_ANGLE; float extraRatio = (float) Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); } else { // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special super.determineScrollingStart(ev); } } @Override protected boolean isScrollingIndicatorEnabled() { return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); } protected void onPageBeginMoving() { super.onPageBeginMoving(); if (isHardwareAccelerated()) { updateChildrenLayersEnabled(); } else { if (mNextPage != INVALID_PAGE) { // we're snapping to a particular screen enableChildrenCache(mCurrentPage, mNextPage); } else { // this is when user is actively dragging a particular screen, they might // swipe it either left or right (but we won't advance by more than one screen) enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); } } // Only show page outlines as we pan if we are on large screen if (LauncherApplication.isScreenLarge()) { showOutlines(); mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; } // If we are not fading in adjacent screens, we still need to restore the alpha in case the // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) if (!mWorkspaceFadeInAdjacentScreens) { for (int i = 0; i < getChildCount(); ++i) { ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); } } // Show the scroll indicator as you pan the page showScrollingIndicator(false); } protected void onPageEndMoving() { if (mFadeScrollingIndicator) { hideScrollingIndicator(false); } if (isHardwareAccelerated()) { updateChildrenLayersEnabled(); } else { clearChildrenCache(); } if (mDragController.isDragging()) { if (isSmall()) { // If we are in springloaded mode, then force an event to check if the current touch // is under a new page (to scroll to) mDragController.forceMoveEvent(); } } else { // If we are not mid-dragging, hide the page outlines if we are on a large screen if (LauncherApplication.isScreenLarge()) { hideOutlines(); } // Hide the scroll indicator as you pan the page if (mFadeScrollingIndicator && !mDragController.isDragging()) { hideScrollingIndicator(false); } } mOverScrollMaxBackgroundAlpha = 0.0f; if (mDelayedResizeRunnable != null) { mDelayedResizeRunnable.run(); mDelayedResizeRunnable = null; } if (mDelayedSnapToPageRunnable != null) { mDelayedSnapToPageRunnable.run(); mDelayedSnapToPageRunnable = null; } } @Override protected void notifyPageSwitchListener() { super.notifyPageSwitchListener(); Launcher.setScreen(mCurrentPage); }; @Override protected void flashScrollingIndicator(boolean animated) { if (mFadeScrollingIndicator) { super.flashScrollingIndicator(animated); } else { showScrollingIndicator(true); } } // As a ratio of screen height, the total distance we want the parallax effect to span // horizontally private float wallpaperTravelToScreenWidthRatio(int width, int height) { float aspectRatio = width / (float) height; // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width // We will use these two data points to extrapolate how much the wallpaper parallax effect // to span (ie travel) at any aspect ratio: final float ASPECT_RATIO_LANDSCAPE = 16/10f; final float ASPECT_RATIO_PORTRAIT = 10/16f; final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; // To find out the desired width at different aspect ratios, we use the following two // formulas, where the coefficient on x is the aspect ratio (width/height): // (16/10)x + y = 1.5 // (10/16)x + y = 1.2 // We solve for x and y and end up with a final formula: final float x = (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; return x * aspectRatio + y; } // The range of scroll values for Workspace private int getScrollRange() { return getChildOffset(getChildCount() - 1) - getChildOffset(0); } protected void setWallpaperDimension() { DisplayMetrics displayMetrics = new DisplayMetrics(); mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); // We need to ensure that there is enough extra space in the wallpaper for the intended // parallax effects if (LauncherApplication.isScreenLarge()) { mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); mWallpaperHeight = maxDim; } else { mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); mWallpaperHeight = maxDim; } new Thread("setWallpaperDimension") { public void run() { mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); } }.start(); } private float wallpaperOffsetForCurrentScroll() { // Set wallpaper offset steps (1 / (number of screens - 1)) mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); // For the purposes of computing the scrollRange and overScrollOffset, we assume // that mLayoutScale is 1. This means that when we're in spring-loaded mode, // there's no discrepancy between the wallpaper offset for a given page. float layoutScale = mLayoutScale; mLayoutScale = 1f; int scrollRange = getScrollRange(); // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); adjustedScrollX *= mWallpaperScrollRatio; mLayoutScale = layoutScale; float scrollProgress = adjustedScrollX / (float) scrollRange; if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { // The wallpaper travel width is how far, from left to right, the wallpaper will move // at this orientation. On tablets in portrait mode we don't move all the way to the // edges of the wallpaper, or otherwise the parallax effect would be too strong. int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); float offsetInDips = wallpaperTravelWidth * scrollProgress + (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it float offset = offsetInDips / (float) mWallpaperWidth; return offset; } else { return scrollProgress; } } private void syncWallpaperOffsetWithScroll() { final boolean enableWallpaperEffects = isHardwareAccelerated(); if (enableWallpaperEffects) { mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); } } private void centerWallpaperOffset() { if (mWindowToken != null) { mWallpaperManager.setWallpaperOffsetSteps(0.5f, 0); mWallpaperManager.setWallpaperOffsets(mWindowToken, 0.5f, 0); } } public void updateWallpaperOffsetImmediately() { mUpdateWallpaperOffsetImmediately = true; } private void updateWallpaperOffsets() { boolean updateNow = false; boolean keepUpdating = true; if (mUpdateWallpaperOffsetImmediately) { updateNow = true; keepUpdating = false; mWallpaperOffset.jumpToFinal(); mUpdateWallpaperOffsetImmediately = false; } else { updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); } if (updateNow) { if (mWindowToken != null) { mWallpaperManager.setWallpaperOffsets(mWindowToken, mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); } } if (keepUpdating) { invalidate(); } } @Override protected void updateCurrentPageScroll() { super.updateCurrentPageScroll(); if (mScrollWallpaper) { computeWallpaperScrollRatio(mCurrentPage); } } @Override protected void snapToPage(int whichPage) { super.snapToPage(whichPage); if (mScrollWallpaper) { computeWallpaperScrollRatio(whichPage); } } @Override protected void snapToPage(int whichPage, int duration) { super.snapToPage(whichPage, duration); computeWallpaperScrollRatio(whichPage); } protected void snapToPage(int whichPage, Runnable r) { if (mDelayedSnapToPageRunnable != null) { mDelayedSnapToPageRunnable.run(); } mDelayedSnapToPageRunnable = r; snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); } private void computeWallpaperScrollRatio(int page) { // Here, we determine what the desired scroll would be with and without a layout scale, // and compute a ratio between the two. This allows us to adjust the wallpaper offset // as though there is no layout scale. float layoutScale = mLayoutScale; int scaled = getChildOffset(page) - getRelativeChildOffset(page); mLayoutScale = 1.0f; float unscaled = getChildOffset(page) - getRelativeChildOffset(page); mLayoutScale = layoutScale; if (scaled > 0) { mWallpaperScrollRatio = (1.0f * unscaled) / scaled; } else { mWallpaperScrollRatio = 1f; } } class WallpaperOffsetInterpolator { float mFinalHorizontalWallpaperOffset = 0.0f; float mFinalVerticalWallpaperOffset = 0.0f; float mHorizontalWallpaperOffset = 0.0f; float mVerticalWallpaperOffset = 0.0f; long mLastWallpaperOffsetUpdateTime; boolean mIsMovingFast; boolean mOverrideHorizontalCatchupConstant; float mHorizontalCatchupConstant = 0.35f; float mVerticalCatchupConstant = 0.35f; public WallpaperOffsetInterpolator() { } public void setOverrideHorizontalCatchupConstant(boolean override) { mOverrideHorizontalCatchupConstant = override; } public void setHorizontalCatchupConstant(float f) { mHorizontalCatchupConstant = f; } public void setVerticalCatchupConstant(float f) { mVerticalCatchupConstant = f; } public boolean computeScrollOffset() { if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { mIsMovingFast = false; return false; } boolean isLandscape = mDisplaySize.x > mDisplaySize.y; long currentTime = System.currentTimeMillis(); long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); if (!mIsMovingFast && xdiff > 0.07) { mIsMovingFast = true; } float fractionToCatchUpIn1MsHorizontal; if (mOverrideHorizontalCatchupConstant) { fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; } else if (mIsMovingFast) { fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; } else { // slow fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; } float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; fractionToCatchUpIn1MsHorizontal /= 33f; fractionToCatchUpIn1MsVertical /= 33f; final float UPDATE_THRESHOLD = 0.00001f; float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; // Don't have any lag between workspace and wallpaper on non-large devices if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; } else { float percentToCatchUpVertical = Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); float percentToCatchUpHorizontal = Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; } mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); return true; } public float getCurrX() { return mHorizontalWallpaperOffset; } public float getFinalX() { return mFinalHorizontalWallpaperOffset; } public float getCurrY() { return mVerticalWallpaperOffset; } public float getFinalY() { return mFinalVerticalWallpaperOffset; } public void setFinalX(float x) { mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); } public void setFinalY(float y) { mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); } public void jumpToFinal() { mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; } } @Override public void computeScroll() { super.computeScroll(); if (mScrollWallpaper) { syncWallpaperOffsetWithScroll(); } } void showOutlines() { if (!isSmall() && !mIsSwitchingState) { if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); mChildrenOutlineFadeInAnimation.start(); } } void hideOutlines() { if (!isSmall() && !mIsSwitchingState) { if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); mChildrenOutlineFadeOutAnimation.start(); } } public void showOutlinesTemporarily() { if (!mIsPageMoving && !isTouchActive()) { snapToPage(mCurrentPage); } } public void setChildrenOutlineAlpha(float alpha) { mChildrenOutlineAlpha = alpha; for (int i = 0; i < getChildCount(); i++) { CellLayout cl = (CellLayout) getChildAt(i); cl.setBackgroundAlpha(alpha); } } public float getChildrenOutlineAlpha() { return mChildrenOutlineAlpha; } void disableBackground() { mDrawBackground = false; } void enableBackground() { mDrawBackground = true; } private void animateBackgroundGradient(float finalAlpha, boolean animated) { if (mBackground == null) return; if (mBackgroundFadeInAnimation != null) { mBackgroundFadeInAnimation.cancel(); mBackgroundFadeInAnimation = null; } if (mBackgroundFadeOutAnimation != null) { mBackgroundFadeOutAnimation.cancel(); mBackgroundFadeOutAnimation = null; } float startAlpha = getBackgroundAlpha(); if (finalAlpha != startAlpha) { if (animated) { mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { public void onAnimationUpdate(ValueAnimator animation) { setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); } }); mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); mBackgroundFadeOutAnimation.start(); } else { setBackgroundAlpha(finalAlpha); } } } public void setBackgroundAlpha(float alpha) { if (alpha != mBackgroundAlpha) { mBackgroundAlpha = alpha; invalidate(); } } public float getBackgroundAlpha() { return mBackgroundAlpha; } /** * Due to 3D transformations, if two CellLayouts are theoretically touching each other, * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived * as being larger. This method computes what offset the rotated view should be translated * in order to minimize this perceived gap. * @param degrees Angle of the view * @param width Width of the view * @param height Height of the view * @return Offset to be used in a View.setTranslationX() call */ private float getOffsetXForRotation(float degrees, int width, int height) { mMatrix.reset(); mCamera.save(); mCamera.rotateY(Math.abs(degrees)); mCamera.getMatrix(mMatrix); mCamera.restore(); mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); mMatrix.postTranslate(width * 0.5f, height * 0.5f); mTempFloat2[0] = width; mTempFloat2[1] = height; mMatrix.mapPoints(mTempFloat2); return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); } float backgroundAlphaInterpolator(float r) { float pivotA = 0.1f; float pivotB = 0.4f; if (r < pivotA) { return 0; } else if (r > pivotB) { return 1.0f; } else { return (r - pivotA)/(pivotB - pivotA); } } float overScrollBackgroundAlphaInterpolator(float r) { float threshold = 0.08f; if (r > mOverScrollMaxBackgroundAlpha) { mOverScrollMaxBackgroundAlpha = r; } else if (r < mOverScrollMaxBackgroundAlpha) { r = mOverScrollMaxBackgroundAlpha; } return Math.min(r / threshold, 1.0f); } private void updatePageAlphaValues(int screenCenter) { boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; if (mWorkspaceFadeInAdjacentScreens && mState == State.NORMAL && !mIsSwitchingState && !isInOverscroll) { for (int i = 0; i < getChildCount(); i++) { CellLayout child = (CellLayout) getChildAt(i); if (child != null) { float scrollProgress = getScrollProgress(screenCenter, child, i); float alpha = 1 - Math.abs(scrollProgress); child.getShortcutsAndWidgets().setAlpha(alpha); if (!mIsDragOccuring) { child.setBackgroundAlphaMultiplier( backgroundAlphaInterpolator(Math.abs(scrollProgress))); } else { child.setBackgroundAlphaMultiplier(1f); } } } } } private void setChildrenBackgroundAlphaMultipliers(float a) { for (int i = 0; i < getChildCount(); i++) { CellLayout child = (CellLayout) getChildAt(i); child.setBackgroundAlphaMultiplier(a); } } @Override protected void screenScrolled(int screenCenter) { super.screenScrolled(screenCenter); updatePageAlphaValues(screenCenter); if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; CellLayout cl = (CellLayout) getChildAt(index); if (getChildCount() > 1) { float scrollProgress = getScrollProgress(screenCenter, cl, index); cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; cl.setRotationY(rotation); setFadeForOverScroll(Math.abs(scrollProgress)); if (!mOverscrollTransformsSet) { mOverscrollTransformsSet = true; cl.setCameraDistance(mDensity * mCameraDistance); cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); cl.setPivotY(cl.getMeasuredHeight() * 0.5f); cl.setOverscrollTransformsDirty(true); } } } else { if (mOverscrollFade != 0) { setFadeForOverScroll(0); } if (mOverscrollTransformsSet) { mOverscrollTransformsSet = false; ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); } } } @Override protected void overScroll(float amount) { acceleratedOverScroll(amount); } protected void onAttachedToWindow() { super.onAttachedToWindow(); mWindowToken = getWindowToken(); computeScroll(); mDragController.setWindowToken(mWindowToken); } protected void onDetachedFromWindow() { mWindowToken = null; } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { mUpdateWallpaperOffsetImmediately = true; } super.onLayout(changed, left, top, right, bottom); } @Override protected void onDraw(Canvas canvas) { if (mScrollWallpaper) { updateWallpaperOffsets(); } // Draw the background gradient if necessary if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { int alpha = (int) (mBackgroundAlpha * 255); mBackground.setAlpha(alpha); mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), getMeasuredHeight()); mBackground.draw(canvas); } super.onDraw(canvas); } boolean isDrawingBackgroundGradient() { return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); } @Override protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { if (!mLauncher.isAllAppsVisible()) { final Folder openFolder = getOpenFolder(); if (openFolder != null) { return openFolder.requestFocus(direction, previouslyFocusedRect); } else { return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); } } return false; } @Override public int getDescendantFocusability() { if (isSmall()) { return ViewGroup.FOCUS_BLOCK_DESCENDANTS; } return super.getDescendantFocusability(); } @Override public void addFocusables(ArrayList views, int direction, int focusableMode) { if (!mLauncher.isAllAppsVisible()) { final Folder openFolder = getOpenFolder(); if (openFolder != null) { openFolder.addFocusables(views, direction); } else { super.addFocusables(views, direction, focusableMode); } } } public boolean isSmall() { return mState == State.SMALL || mState == State.SPRING_LOADED; } void enableChildrenCache(int fromPage, int toPage) { if (fromPage > toPage) { final int temp = fromPage; fromPage = toPage; toPage = temp; } final int screenCount = getChildCount(); fromPage = Math.max(fromPage, 0); toPage = Math.min(toPage, screenCount - 1); for (int i = fromPage; i <= toPage; i++) { final CellLayout layout = (CellLayout) getChildAt(i); layout.setChildrenDrawnWithCacheEnabled(true); layout.setChildrenDrawingCacheEnabled(true); } } void clearChildrenCache() { final int screenCount = getChildCount(); for (int i = 0; i < screenCount; i++) { final CellLayout layout = (CellLayout) getChildAt(i); layout.setChildrenDrawnWithCacheEnabled(false); // In software mode, we don't want the items to continue to be drawn into bitmaps if (!isHardwareAccelerated()) { layout.setChildrenDrawingCacheEnabled(false); } } } private void updateChildrenLayersEnabled() { boolean small = mState == State.SMALL || mIsSwitchingState; boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); if (enableChildrenLayers != mChildrenLayersEnabled) { mChildrenLayersEnabled = enableChildrenLayers; for (int i = 0; i < getPageCount(); i++) { ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); } } } protected void onWallpaperTap(MotionEvent ev) { final int[] position = mTempCell; getLocationOnScreen(position); int pointerIndex = ev.getActionIndex(); position[0] += (int) ev.getX(pointerIndex); position[1] += (int) ev.getY(pointerIndex); mWallpaperManager.sendWallpaperCommand(getWindowToken(), ev.getAction() == MotionEvent.ACTION_UP ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, position[0], position[1], 0, null); } /* * This interpolator emulates the rate at which the perceived scale of an object changes * as its distance from a camera increases. When this interpolator is applied to a scale * animation on a view, it evokes the sense that the object is shrinking due to moving away * from the camera. */ static class ZInterpolator implements TimeInterpolator { private float focalLength; public ZInterpolator(float foc) { focalLength = foc; } public float getInterpolation(float input) { return (1.0f - focalLength / (focalLength + input)) / (1.0f - focalLength / (focalLength + 1.0f)); } } /* * The exact reverse of ZInterpolator. */ static class InverseZInterpolator implements TimeInterpolator { private ZInterpolator zInterpolator; public InverseZInterpolator(float foc) { zInterpolator = new ZInterpolator(foc); } public float getInterpolation(float input) { return 1 - zInterpolator.getInterpolation(1 - input); } } /* * ZInterpolator compounded with an ease-out. */ static class ZoomOutInterpolator implements TimeInterpolator { private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); public float getInterpolation(float input) { return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); } } /* * InvereZInterpolator compounded with an ease-out. */ static class ZoomInInterpolator implements TimeInterpolator { private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); public float getInterpolation(float input) { return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); } } private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); /* * * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace * * These methods mark the appropriate pages as accepting drops (which alters their visual * appearance). * */ public void onDragStartedWithItem(View v) { final Canvas canvas = new Canvas(); // The outline is used to visualize where the item will land if dropped mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); } public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { final Canvas canvas = new Canvas(); int[] size = estimateItemSize(info.spanX, info.spanY, info, false); // The outline is used to visualize where the item will land if dropped mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], size[1], alphaClipPaint); } public void exitWidgetResizeMode() { DragLayer dragLayer = mLauncher.getDragLayer(); dragLayer.clearAllResizeFrames(); } private void initAnimationArrays() { final int childCount = getChildCount(); if (mOldTranslationXs != null) return; mOldTranslationXs = new float[childCount]; mOldTranslationYs = new float[childCount]; mOldScaleXs = new float[childCount]; mOldScaleYs = new float[childCount]; mOldBackgroundAlphas = new float[childCount]; mOldAlphas = new float[childCount]; mNewTranslationXs = new float[childCount]; mNewTranslationYs = new float[childCount]; mNewScaleXs = new float[childCount]; mNewScaleYs = new float[childCount]; mNewBackgroundAlphas = new float[childCount]; mNewAlphas = new float[childCount]; mNewRotationYs = new float[childCount]; } Animator getChangeStateAnimation(final State state, boolean animated) { return getChangeStateAnimation(state, animated, 0); } Animator getChangeStateAnimation(final State state, boolean animated, int delay) { if (mState == state) { return null; } // Initialize animation arrays for the first time if necessary initAnimationArrays(); AnimatorSet anim = animated ? new AnimatorSet() : null; // Stop any scrolling, move to the current page right away setCurrentPage(getNextPage()); final State oldState = mState; final boolean oldStateIsNormal = (oldState == State.NORMAL); final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); final boolean oldStateIsSmall = (oldState == State.SMALL); mState = state; final boolean stateIsNormal = (state == State.NORMAL); final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); final boolean stateIsSmall = (state == State.SMALL); float finalScaleFactor = 1.0f; float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; float translationX = 0; float translationY = 0; boolean zoomIn = true; if (state != State.NORMAL) { finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); setPageSpacing(mSpringLoadedPageSpacing); if (oldStateIsNormal && stateIsSmall) { zoomIn = false; setLayoutScale(finalScaleFactor); updateChildrenLayersEnabled(); } else { finalBackgroundAlpha = 1.0f; setLayoutScale(finalScaleFactor); } } else { setPageSpacing(PagedView.AUTOMATIC_PAGE_SPACING); setLayoutScale(1.0f); } final int duration = zoomIn ? getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); for (int i = 0; i < getChildCount(); i++) { final CellLayout cl = (CellLayout) getChildAt(i); float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || (i == mCurrentPage)) ? 1f : 0f; float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); float initialAlpha = currentAlpha; // Determine the pages alpha during the state transition if ((oldStateIsSmall && stateIsNormal) || (oldStateIsNormal && stateIsSmall)) { // To/from workspace - only show the current page unless the transition is not // animated and the animation end callback below doesn't run; // or, if we're in spring-loaded mode if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { finalAlpha = 1f; } else { initialAlpha = 0f; finalAlpha = 0f; } } mOldAlphas[i] = initialAlpha; mNewAlphas[i] = finalAlpha; if (animated) { mOldTranslationXs[i] = cl.getTranslationX(); mOldTranslationYs[i] = cl.getTranslationY(); mOldScaleXs[i] = cl.getScaleX(); mOldScaleYs[i] = cl.getScaleY(); mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); mNewTranslationXs[i] = translationX; mNewTranslationYs[i] = translationY; mNewScaleXs[i] = finalScaleFactor; mNewScaleYs[i] = finalScaleFactor; mNewBackgroundAlphas[i] = finalBackgroundAlpha; } else { cl.setTranslationX(translationX); cl.setTranslationY(translationY); cl.setScaleX(finalScaleFactor); cl.setScaleY(finalScaleFactor); cl.setBackgroundAlpha(finalBackgroundAlpha); cl.setShortcutAndWidgetAlpha(finalAlpha); } } if (animated) { for (int index = 0; index < getChildCount(); index++) { final int i = index; final CellLayout cl = (CellLayout) getChildAt(i); float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { cl.setTranslationX(mNewTranslationXs[i]); cl.setTranslationY(mNewTranslationYs[i]); cl.setScaleX(mNewScaleXs[i]); cl.setScaleY(mNewScaleYs[i]); cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); cl.setRotationY(mNewRotationYs[i]); } else { LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); a.translationX(mNewTranslationXs[i]) .translationY(mNewTranslationYs[i]) .scaleX(mNewScaleXs[i]) .scaleY(mNewScaleYs[i]) .setDuration(duration) .setInterpolator(mZoomInInterpolator); anim.play(a); if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { LauncherViewPropertyAnimator alphaAnim = new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); alphaAnim.alpha(mNewAlphas[i]) .setDuration(duration) .setInterpolator(mZoomInInterpolator); anim.play(alphaAnim); } if (mOldBackgroundAlphas[i] != 0 || mNewBackgroundAlphas[i] != 0) { ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); bgAnim.setInterpolator(mZoomInInterpolator); bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { public void onAnimationUpdate(float a, float b) { cl.setBackgroundAlpha( a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); } }); anim.play(bgAnim); } } } buildPageHardwareLayers(); anim.setStartDelay(delay); } if (stateIsSpringLoaded) { // Right now we're covered by Apps Customize // Show the background gradient immediately, so the gradient will // be showing once AppsCustomize disappears animateBackgroundGradient(getResources().getInteger( R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); } else { // Fade the background gradient away animateBackgroundGradient(0f, true); } return anim; } @Override public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { mIsSwitchingState = true; cancelScrollingIndicatorAnimations(); } @Override public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { } @Override public void onLauncherTransitionStep(Launcher l, float t) { mTransitionProgress = t; } @Override public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { mIsSwitchingState = false; mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); updateChildrenLayersEnabled(); // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure // ensure that only the current page is visible during (and subsequently, after) the // transition animation. If fade adjacent pages is disabled, then re-enable the page // visibility after the transition animation. if (!mWorkspaceFadeInAdjacentScreens) { for (int i = 0; i < getChildCount(); i++) { final CellLayout cl = (CellLayout) getChildAt(i); cl.setShortcutAndWidgetAlpha(1f); } } } @Override public View getContent() { return this; } /** * Draw the View v into the given Canvas. * * @param v the view to draw * @param destCanvas the canvas to draw on * @param padding the horizontal and vertical padding to use when drawing */ private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { final Rect clipRect = mTempRect; v.getDrawingRect(clipRect); boolean textVisible = false; destCanvas.save(); if (v instanceof TextView && pruneToDrawable) { Drawable d = ((TextView) v).getCompoundDrawables()[1]; clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); destCanvas.translate(padding / 2, padding / 2); d.draw(destCanvas); } else { if (v instanceof FolderIcon) { if (!mHideIconLabels) { // For FolderIcons the text can bleed into the icon area, and so we need to // hide the text completely (which can't be achieved by clipping). if (((FolderIcon) v).getTextVisible()) { ((FolderIcon) v).setTextVisible(false); textVisible = true; } } } else if (v instanceof BubbleTextView) { final BubbleTextView tv = (BubbleTextView) v; clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + tv.getLayout().getLineTop(0); } else if (v instanceof TextView) { final TextView tv = (TextView) v; clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + tv.getLayout().getLineTop(0); } destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); destCanvas.clipRect(clipRect, Op.REPLACE); v.draw(destCanvas); // Restore text visibility of FolderIcon if necessary if (!mHideIconLabels && textVisible) { ((FolderIcon) v).setTextVisible(true); } } destCanvas.restore(); } /** * Returns a new bitmap to show when the given View is being dragged around. * Responsibility for the bitmap is transferred to the caller. */ public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { Bitmap b; if (v instanceof TextView) { Drawable d = ((TextView) v).getCompoundDrawables()[1]; b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); } else { b = Bitmap.createBitmap( v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); } canvas.setBitmap(b); drawDragView(v, canvas, padding, true); canvas.setBitmap(null); return b; } /** * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. * Responsibility for the bitmap is transferred to the caller. */ private Bitmap createDragOutline(View v, Canvas canvas, int padding) { final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); final Bitmap b = Bitmap.createBitmap( v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); canvas.setBitmap(b); drawDragView(v, canvas, padding, true); mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); canvas.setBitmap(null); return b; } /** * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. * Responsibility for the bitmap is transferred to the caller. */ private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, Paint alphaClipPaint) { final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); canvas.setBitmap(b); Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), (h - padding) / (float) orig.getHeight()); int scaledWidth = (int) (scaleFactor * orig.getWidth()); int scaledHeight = (int) (scaleFactor * orig.getHeight()); Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); // center the image dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); canvas.drawBitmap(orig, src, dst, null); mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, alphaClipPaint); canvas.setBitmap(null); return b; } void startDrag(CellLayout.CellInfo cellInfo) { View child = cellInfo.cell; // Make sure the drag was started by a long press as opposed to a long click. if (!child.isInTouchMode()) { return; } mDragInfo = cellInfo; child.setVisibility(INVISIBLE); CellLayout layout = (CellLayout) child.getParent().getParent(); layout.prepareChildForDrag(child); child.clearFocus(); child.setPressed(false); final Canvas canvas = new Canvas(); // The outline is used to visualize where the item will land if dropped mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); beginDragShared(child, this); } public void beginDragShared(View child, DragSource source) { Resources r = getResources(); // The drag bitmap follows the touch point around on the screen final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); final int bmpWidth = b.getWidth(); final int bmpHeight = b.getHeight(); mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 - DRAG_BITMAP_PADDING / 2); Point dragVisualizeOffset = null; Rect dragRect = null; if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); int top = child.getPaddingTop(); int left = (bmpWidth - iconSize) / 2; int right = left + iconSize; int bottom = top + iconSize; dragLayerY += top; // Note: The drag region is used to calculate drag layer offsets, but the // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, iconPaddingTop - DRAG_BITMAP_PADDING / 2); dragRect = new Rect(left, top, right, bottom); } else if (child instanceof FolderIcon) { int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); dragRect = new Rect(0, 0, child.getWidth(), previewSize); } // Clear the pressed state if necessary if (child instanceof BubbleTextView) { BubbleTextView icon = (BubbleTextView) child; icon.clearPressedOrFocusedBackground(); } mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); b.recycle(); // Show the scrolling indicator when you pick up an item showScrollingIndicator(false); } void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); final int[] cellXY = new int[2]; target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], cellXY[1]); } public boolean transitionStateShouldAllowDrop() { return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); } /** * {@inheritDoc} */ public boolean acceptDrop(DragObject d) { // If it's an external drop (e.g. from All Apps), check if it should be accepted CellLayout dropTargetLayout = mDropToLayout; if (d.dragSource != this) { // Don't accept the drop if we're not over a screen at time of drop if (dropTargetLayout == null) { return false; } if (!transitionStateShouldAllowDrop()) return false; mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, mDragViewVisualCenter); // We want the point to be mapped to the dragTarget. if (mLauncher.isHotseatLayout(dropTargetLayout)) { mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); } else { mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); } int spanX = 1; int spanY = 1; if (mDragInfo != null) { final CellLayout.CellInfo dragCellInfo = mDragInfo; spanX = dragCellInfo.spanX; spanY = dragCellInfo.spanY; } else { final ItemInfo dragInfo = (ItemInfo) d.dragInfo; spanX = dragInfo.spanX; spanY = dragInfo.spanY; } int minSpanX = spanX; int minSpanY = spanY; if (d.dragInfo instanceof PendingAddWidgetInfo) { minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; } mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, mTargetCell); float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, mTargetCell, distance, true)) { return true; } if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, mTargetCell, distance)) { return true; } int[] resultSpan = new int[2]; mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; // Don't accept the drop if there's no room for the item if (!foundCell) { // Don't show the message if we are dropping on the AllApps button and the hotseat // is full boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); if (mTargetCell != null && isHotseat) { Hotseat hotseat = mLauncher.getHotseat(); if (hotseat.isAllAppsButtonRank( hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { return false; } } mLauncher.showOutOfSpaceMessage(isHotseat); return false; } } return true; } boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float distance, boolean considerTimeout) { if (distance > mMaxDistanceForFolderCreation) return false; View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); if (dropOverView != null) { CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { return false; } } boolean hasntMoved = false; if (mDragInfo != null) { hasntMoved = dropOverView == mDragInfo.cell; } if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { return false; } boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); boolean willBecomeShortcut = (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); return (aboveShortcut && willBecomeShortcut); } boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, float distance) { if (distance > mMaxDistanceForFolderCreation) return false; View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); if (dropOverView != null) { CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { return false; } } if (dropOverView instanceof FolderIcon) { FolderIcon fi = (FolderIcon) dropOverView; if (fi.acceptDrop(dragInfo)) { return true; } } return false; } boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, int[] targetCell, float distance, boolean external, DragView dragView, Runnable postAnimationRunnable) { if (distance > mMaxDistanceForFolderCreation) return false; View v = target.getChildAt(targetCell[0], targetCell[1]); boolean hasntMoved = false; if (mDragInfo != null) { CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); hasntMoved = (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]) && (cellParent == target); } if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; mCreateUserFolderOnDrop = false; final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); if (aboveShortcut && willBecomeShortcut) { ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); // if the drag started here, we need to remove it from the workspace if (!external) { getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); } Rect folderLocation = new Rect(); float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); target.removeView(v); FolderIcon fi = mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); destInfo.cellX = -1; destInfo.cellY = -1; sourceInfo.cellX = -1; sourceInfo.cellY = -1; // If the dragView is null, we can't animate boolean animate = dragView != null; if (animate) { fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, postAnimationRunnable); } else { fi.addItem(destInfo); fi.addItem(sourceInfo); } return true; } return false; } boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, float distance, DragObject d, boolean external) { if (distance > mMaxDistanceForFolderCreation) return false; View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); if (!mAddToExistingFolderOnDrop) return false; mAddToExistingFolderOnDrop = false; if (dropOverView instanceof FolderIcon) { FolderIcon fi = (FolderIcon) dropOverView; if (fi.acceptDrop(d.dragInfo)) { fi.onDrop(d); // if the drag started here, we need to remove it from the workspace if (!external) { getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); } return true; } } return false; } public void onDrop(final DragObject d) { mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, mDragViewVisualCenter); CellLayout dropTargetLayout = mDropToLayout; // We want the point to be mapped to the dragTarget. if (dropTargetLayout != null) { if (mLauncher.isHotseatLayout(dropTargetLayout)) { mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); } else { mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); } } int snapScreen = -1; boolean resizeOnDrop = false; if (d.dragSource != this) { final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1] }; onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); } else if (mDragInfo != null) { final View cell = mDragInfo.cell; Runnable resizeRunnable = null; if (dropTargetLayout != null) { // Move internally boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); long container = hasMovedIntoHotseat ? LauncherSettings.Favorites.CONTAINER_HOTSEAT : LauncherSettings.Favorites.CONTAINER_DESKTOP; int screen = (mTargetCell[0] < 0) ? mDragInfo.screen : indexOfChild(dropTargetLayout); int spanX = mDragInfo != null ? mDragInfo.spanX : 1; int spanY = mDragInfo != null ? mDragInfo.spanY : 1; // First we find the cell nearest to point at which the item is // dropped, without any consideration to whether there is an item there. mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); // If the item being dropped is a shortcut and the nearest drop // cell also contains a shortcut, then create a folder with the two shortcuts. if (!mInScrollArea && createUserFolderIfNecessary(cell, container, dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { return; } if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, distance, d, false)) { return; } // Aside from the special case where we're dropping a shortcut onto a shortcut, // we need to find the nearest cell location that is vacant ItemInfo item = (ItemInfo) d.dragInfo; int minSpanX = item.spanX; int minSpanY = item.spanY; if (item.minSpanX > 0 && item.minSpanY > 0) { minSpanX = item.minSpanX; minSpanY = item.minSpanY; } int[] resultSpan = new int[2]; mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { resizeOnDrop = true; item.spanX = resultSpan[0]; item.spanY = resultSpan[1]; AppWidgetHostView awhv = (AppWidgetHostView) cell; AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], resultSpan[1]); } if (mCurrentPage != screen && !hasMovedIntoHotseat) { snapScreen = screen; snapToPage(screen); } if (foundCell) { final ItemInfo info = (ItemInfo) cell.getTag(); if (hasMovedLayouts) { // Reparent the view getParentCellLayoutForView(cell).removeView(cell); addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, info.spanY); } // update the item's position after drop CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); lp.cellX = lp.tmpCellX = mTargetCell[0]; lp.cellY = lp.tmpCellY = mTargetCell[1]; lp.cellHSpan = item.spanX; lp.cellVSpan = item.spanY; lp.isLockedToGrid = true; cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && cell instanceof LauncherAppWidgetHostView) { final CellLayout cellLayout = dropTargetLayout; // We post this call so that the widget has a chance to be placed // in its final location final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); if (pinfo != null && pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE || mResizeAnyWidget) { final Runnable addResizeFrame = new Runnable() { public void run() { DragLayer dragLayer = mLauncher.getDragLayer(); dragLayer.addResizeFrame(info, hostView, cellLayout); } }; resizeRunnable = (new Runnable() { public void run() { if (!isPageMoving()) { addResizeFrame.run(); } else { mDelayedResizeRunnable = addResizeFrame; } } }); } } LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, lp.cellY); } else { // If we can't find a drop location, we return the item to its original position CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); mTargetCell[0] = lp.cellX; mTargetCell[1] = lp.cellY; CellLayout layout = (CellLayout) cell.getParent().getParent(); layout.markCellsAsOccupiedForView(cell); } } final CellLayout parent = (CellLayout) cell.getParent().getParent(); final Runnable finalResizeRunnable = resizeRunnable; // Prepare it to be animated into its new position // This must be called after the view has been re-parented final Runnable onCompleteRunnable = new Runnable() { @Override public void run() { mAnimatingViewIntoPlace = false; updateChildrenLayersEnabled(); if (finalResizeRunnable != null) { finalResizeRunnable.run(); } } }; mAnimatingViewIntoPlace = true; if (d.dragView.hasDrawn()) { final ItemInfo info = (ItemInfo) cell.getTag(); if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : ANIMATE_INTO_POSITION_AND_DISAPPEAR; animateWidgetDrop(info, parent, d.dragView, onCompleteRunnable, animationType, cell, false); } else { int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, onCompleteRunnable, this); } } else { d.deferDragViewCleanupPostAnimation = false; cell.setVisibility(VISIBLE); } parent.onDropChild(cell); } } public void setFinalScrollForPageChange(int screen) { if (screen >= 0) { mSavedScrollX = getScrollX(); CellLayout cl = (CellLayout) getChildAt(screen); mSavedTranslationX = cl.getTranslationX(); mSavedRotationY = cl.getRotationY(); final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); setScrollX(newX); cl.setTranslationX(0f); cl.setRotationY(0f); } } public void resetFinalScrollForPageChange(int screen) { if (screen >= 0) { CellLayout cl = (CellLayout) getChildAt(screen); setScrollX(mSavedScrollX); cl.setTranslationX(mSavedTranslationX); cl.setRotationY(mSavedRotationY); } } public void getViewLocationRelativeToSelf(View v, int[] location) { getLocationInWindow(location); int x = location[0]; int y = location[1]; v.getLocationInWindow(location); int vX = location[0]; int vY = location[1]; location[0] = vX - x; location[1] = vY - y; } public void onDragEnter(DragObject d) { mDragEnforcer.onDragEnter(); mCreateUserFolderOnDrop = false; mAddToExistingFolderOnDrop = false; mDropToLayout = null; CellLayout layout = getCurrentDropLayout(); setCurrentDropLayout(layout); setCurrentDragOverlappingLayout(layout); // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we // don't need to show the outlines if (LauncherApplication.isScreenLarge()) { showOutlines(); } } static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { Resources res = launcher.getResources(); Display display = launcher.getWindowManager().getDefaultDisplay(); Point smallestSize = new Point(); Point largestSize = new Point(); display.getCurrentSizeRange(smallestSize, largestSize); if (orientation == CellLayout.LANDSCAPE) { if (mLandscapeCellLayoutMetrics == null) { int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); int width = largestSize.x - paddingLeft - paddingRight; int height = smallestSize.y - paddingTop - paddingBottom; mLandscapeCellLayoutMetrics = new Rect(); CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), orientation); } return mLandscapeCellLayoutMetrics; } else if (orientation == CellLayout.PORTRAIT) { if (mPortraitCellLayoutMetrics == null) { int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); int width = smallestSize.x - paddingLeft - paddingRight; int height = largestSize.y - paddingTop - paddingBottom; mPortraitCellLayoutMetrics = new Rect(); CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), orientation); } return mPortraitCellLayoutMetrics; } return null; } public void onDragExit(DragObject d) { mDragEnforcer.onDragExit(); // Here we store the final page that will be dropped to, if the workspace in fact // receives the drop if (mInScrollArea) { mDropToLayout = mDragOverlappingLayout; } else { mDropToLayout = mDragTargetLayout; } if (mDragMode == DRAG_MODE_CREATE_FOLDER) { mCreateUserFolderOnDrop = true; } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { mAddToExistingFolderOnDrop = true; } // Reset the scroll area and previous drag target onResetScrollArea(); setCurrentDropLayout(null); setCurrentDragOverlappingLayout(null); mSpringLoadedDragController.cancel(); if (!mIsPageMoving) { hideOutlines(); } } void setCurrentDropLayout(CellLayout layout) { if (mDragTargetLayout != null) { mDragTargetLayout.revertTempState(); mDragTargetLayout.onDragExit(); } mDragTargetLayout = layout; if (mDragTargetLayout != null) { mDragTargetLayout.onDragEnter(); } cleanupReorder(true); cleanupFolderCreation(); setCurrentDropOverCell(-1, -1); } void setCurrentDragOverlappingLayout(CellLayout layout) { if (mDragOverlappingLayout != null) { mDragOverlappingLayout.setIsDragOverlapping(false); } mDragOverlappingLayout = layout; if (mDragOverlappingLayout != null) { mDragOverlappingLayout.setIsDragOverlapping(true); } invalidate(); } void setCurrentDropOverCell(int x, int y) { if (x != mDragOverX || y != mDragOverY) { mDragOverX = x; mDragOverY = y; setDragMode(DRAG_MODE_NONE); } } void setDragMode(int dragMode) { if (dragMode != mDragMode) { if (dragMode == DRAG_MODE_NONE) { cleanupAddToFolder(); // We don't want to cancel the re-order alarm every time the target cell changes // as this feels to slow / unresponsive. cleanupReorder(false); cleanupFolderCreation(); } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { cleanupReorder(true); cleanupFolderCreation(); } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { cleanupAddToFolder(); cleanupReorder(true); } else if (dragMode == DRAG_MODE_REORDER) { cleanupAddToFolder(); cleanupFolderCreation(); } mDragMode = dragMode; } } private void cleanupFolderCreation() { if (mDragFolderRingAnimator != null) { mDragFolderRingAnimator.animateToNaturalState(); } mFolderCreationAlarm.cancelAlarm(); } private void cleanupAddToFolder() { if (mDragOverFolderIcon != null) { mDragOverFolderIcon.onDragExit(null); mDragOverFolderIcon = null; } } private void cleanupReorder(boolean cancelAlarm) { // Any pending reorders are canceled if (cancelAlarm) { mReorderAlarm.cancelAlarm(); } mLastReorderX = -1; mLastReorderY = -1; } public DropTarget getDropTargetDelegate(DragObject d) { return null; } /* * * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's * coordinate space. The argument xy is modified with the return result. * */ void mapPointFromSelfToChild(View v, float[] xy) { mapPointFromSelfToChild(v, xy, null); } /* * * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's * coordinate space. The argument xy is modified with the return result. * * if cachedInverseMatrix is not null, this method will just use that matrix instead of * computing it itself; we use this to avoid redundant matrix inversions in * findMatchingPageForDragOver * */ void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { if (cachedInverseMatrix == null) { v.getMatrix().invert(mTempInverseMatrix); cachedInverseMatrix = mTempInverseMatrix; } int scrollX = getScrollX(); if (mNextPage != INVALID_PAGE) { scrollX = mScroller.getFinalX(); } xy[0] = xy[0] + scrollX - v.getLeft(); xy[1] = xy[1] + getScrollY() - v.getTop(); cachedInverseMatrix.mapPoints(xy); } /* * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace * covers the full screen) */ void mapPointFromSelfToSibling(View v, float[] xy) { xy[0] = xy[0] - v.getLeft(); xy[1] = xy[1] - v.getTop(); } void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); } /* * * Convert the 2D coordinate xy from this CellLayout's coordinate space to * the parent View's coordinate space. The argument xy is modified with the return result. * */ void mapPointFromChildToSelf(View v, float[] xy) { v.getMatrix().mapPoints(xy); int scrollX = getScrollX(); if (mNextPage != INVALID_PAGE) { scrollX = mScroller.getFinalX(); } xy[0] -= (scrollX - v.getLeft()); xy[1] -= (getScrollY() - v.getTop()); } static private float squaredDistance(float[] point1, float[] point2) { float distanceX = point1[0] - point2[0]; float distanceY = point2[1] - point2[1]; return distanceX * distanceX + distanceY * distanceY; } /* * * Returns true if the passed CellLayout cl overlaps with dragView * */ boolean overlaps(CellLayout cl, DragView dragView, int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { // Transform the coordinates of the item being dragged to the CellLayout's coordinates final float[] draggedItemTopLeft = mTempDragCoordinates; draggedItemTopLeft[0] = dragViewX; draggedItemTopLeft[1] = dragViewY; final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); // Transform the dragged item's top left coordinates // to the CellLayout's local coordinates mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { // Transform the dragged item's bottom right coordinates // to the CellLayout's local coordinates mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { float overlap = (overlapRegionRight - overlapRegionLeft) * (overlapRegionBottom - overlapRegionTop); if (overlap > 0) { return true; } } } return false; } /* * * This method returns the CellLayout that is currently being dragged to. In order to drag * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one * * Return null if no CellLayout is currently being dragged over * */ private CellLayout findMatchingPageForDragOver( DragView dragView, float originX, float originY, boolean exact) { // We loop through all the screens (ie CellLayouts) and see which ones overlap // with the item being dragged and then choose the one that's closest to the touch point final int screenCount = getChildCount(); CellLayout bestMatchingScreen = null; float smallestDistSoFar = Float.MAX_VALUE; for (int i = 0; i < screenCount; i++) { CellLayout cl = (CellLayout) getChildAt(i); final float[] touchXy = {originX, originY}; // Transform the touch coordinates to the CellLayout's local coordinates // If the touch point is within the bounds of the cell layout, we can return immediately cl.getMatrix().invert(mTempInverseMatrix); mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { return cl; } if (!exact) { // Get the center of the cell layout in screen coordinates final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; cellLayoutCenter[0] = cl.getWidth()/2; cellLayoutCenter[1] = cl.getHeight()/2; mapPointFromChildToSelf(cl, cellLayoutCenter); touchXy[0] = originX; touchXy[1] = originY; // Calculate the distance between the center of the CellLayout // and the touch point float dist = squaredDistance(touchXy, cellLayoutCenter); if (dist < smallestDistSoFar) { smallestDistSoFar = dist; bestMatchingScreen = cl; } } } return bestMatchingScreen; } // This is used to compute the visual center of the dragView. This point is then // used to visualize drop locations and determine where to drop an item. The idea is that // the visual center represents the user's interpretation of where the item is, and hence // is the appropriate point to use when determining drop location. private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, DragView dragView, float[] recycle) { float res[]; if (recycle == null) { res = new float[2]; } else { res = recycle; } // First off, the drag view has been shifted in a way that is not represented in the // x and y values or the x/yOffsets. Here we account for that shift. x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); // These represent the visual top and left of drag view if a dragRect was provided. // If a dragRect was not provided, then they correspond to the actual view left and // top, as the dragRect is in that case taken to be the entire dragView. // R.dimen.dragViewOffsetY. int left = x - xOffset; int top = y - yOffset; // In order to find the visual center, we shift by half the dragRect res[0] = left + dragView.getDragRegion().width() / 2; res[1] = top + dragView.getDragRegion().height() / 2; return res; } private boolean isDragWidget(DragObject d) { return (d.dragInfo instanceof LauncherAppWidgetInfo || d.dragInfo instanceof PendingAddWidgetInfo); } private boolean isExternalDragWidget(DragObject d) { return d.dragSource != this && isDragWidget(d); } public void onDragOver(DragObject d) { // Skip drag over events while we are dragging over side pages if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; Rect r = new Rect(); CellLayout layout = null; ItemInfo item = (ItemInfo) d.dragInfo; // Ensure that we have proper spans for the item that we are dropping if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, mDragViewVisualCenter); final View child = (mDragInfo == null) ? null : mDragInfo.cell; // Identify whether we have dragged over a side page if (isSmall()) { if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { mLauncher.getHotseat().getHitRect(r); if (r.contains(d.x, d.y)) { layout = mLauncher.getHotseat().getLayout(); } } if (layout == null) { layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); } if (layout != mDragTargetLayout) { setCurrentDropLayout(layout); setCurrentDragOverlappingLayout(layout); boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); if (isInSpringLoadedMode) { if (mLauncher.isHotseatLayout(layout)) { mSpringLoadedDragController.cancel(); } else { mSpringLoadedDragController.setAlarm(mDragTargetLayout); } } } } else { // Test to see if we are over the hotseat otherwise just use the current page if (mLauncher.getHotseat() != null && !isDragWidget(d)) { mLauncher.getHotseat().getHitRect(r); if (r.contains(d.x, d.y)) { layout = mLauncher.getHotseat().getLayout(); } } if (layout == null) { layout = getCurrentDropLayout(); } if (layout != mDragTargetLayout) { setCurrentDropLayout(layout); setCurrentDragOverlappingLayout(layout); } } // Handle the drag over if (mDragTargetLayout != null) { // We want the point to be mapped to the dragTarget. if (mLauncher.isHotseatLayout(mDragTargetLayout)) { mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); } else { mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); } ItemInfo info = (ItemInfo) d.dragInfo; mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, mTargetCell); setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); float targetCellDistance = mDragTargetLayout.getDistanceFromCell( mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); manageFolderFeedback(info, mDragTargetLayout, mTargetCell, targetCellDistance, dragOverView); int minSpanX = item.spanX; int minSpanY = item.spanY; if (item.minSpanX > 0 && item.minSpanY > 0) { minSpanX = item.minSpanX; minSpanY = item.minSpanY; } boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, item.spanY, child, mTargetCell); if (!nearestDropOccupied) { mDragTargetLayout.visualizeDropLocation(child, mDragOutline, (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || mLastReorderY != mTargetCell[1])) { // Otherwise, if we aren't adding to or creating a folder and there's no pending // reorder, then we schedule a reorder ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); mReorderAlarm.setOnAlarmListener(listener); mReorderAlarm.setAlarm(REORDER_TIMEOUT); } if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || !nearestDropOccupied) { if (mDragTargetLayout != null) { mDragTargetLayout.revertTempState(); } } } } private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, int[] targetCell, float distance, View dragOverView) { boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, false); if (mDragMode == DRAG_MODE_NONE && userFolderPending && !mFolderCreationAlarm.alarmPending()) { mFolderCreationAlarm.setOnAlarmListener(new FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); return; } boolean willAddToFolder = willAddToExistingUserFolder(info, targetLayout, targetCell, distance); if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { mDragOverFolderIcon = ((FolderIcon) dragOverView); mDragOverFolderIcon.onDragEnter(info); if (targetLayout != null) { targetLayout.clearDragOutlines(); } setDragMode(DRAG_MODE_ADD_TO_FOLDER); return; } if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { setDragMode(DRAG_MODE_NONE); } if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { setDragMode(DRAG_MODE_NONE); } return; } class FolderCreationAlarmListener implements OnAlarmListener { CellLayout layout; int cellX; int cellY; public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { this.layout = layout; this.cellX = cellX; this.cellY = cellY; } public void onAlarm(Alarm alarm) { if (mDragFolderRingAnimator == null) { mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); } mDragFolderRingAnimator.setCell(cellX, cellY); mDragFolderRingAnimator.setCellLayout(layout); mDragFolderRingAnimator.animateToAcceptState(); layout.showFolderAccept(mDragFolderRingAnimator); layout.clearDragOutlines(); setDragMode(DRAG_MODE_CREATE_FOLDER); } } class ReorderAlarmListener implements OnAlarmListener { float[] dragViewCenter; int minSpanX, minSpanY, spanX, spanY; DragView dragView; View child; public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, int spanY, DragView dragView, View child) { this.dragViewCenter = dragViewCenter; this.minSpanX = minSpanX; this.minSpanY = minSpanY; this.spanX = spanX; this.spanY = spanY; this.child = child; this.dragView = dragView; } public void onAlarm(Alarm alarm) { int[] resultSpan = new int[2]; mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); mLastReorderX = mTargetCell[0]; mLastReorderY = mTargetCell[1]; mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { mDragTargetLayout.revertTempState(); } else { setDragMode(DRAG_MODE_REORDER); } boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; mDragTargetLayout.visualizeDropLocation(child, mDragOutline, (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, dragView.getDragVisualizeOffset(), dragView.getDragRegion()); } } @Override public void getHitRect(Rect outRect) { // We want the workspace to have the whole area of the display (it will find the correct // cell layout to drop to in the existing drag/drop logic. outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); } /** * Add the item specified by dragInfo to the given layout. * @return true if successful */ public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); return true; } mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); return false; } private void onDropExternal(int[] touchXY, Object dragInfo, CellLayout cellLayout, boolean insertAtFirst) { onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); } /** * Drop an item that didn't originate on one of the workspace screens. * It may have come from Launcher (e.g. from all apps or customize), or it may have * come from another app altogether. * * NOTE: This can also be called when we are outside of a drag event, when we want * to add an item to one of the workspace screens. */ private void onDropExternal(final int[] touchXY, final Object dragInfo, final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { final Runnable exitSpringLoadedRunnable = new Runnable() { @Override public void run() { mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); } }; ItemInfo info = (ItemInfo) dragInfo; int spanX = info.spanX; int spanY = info.spanY; if (mDragInfo != null) { spanX = mDragInfo.spanX; spanY = mDragInfo.spanY; } final long container = mLauncher.isHotseatLayout(cellLayout) ? LauncherSettings.Favorites.CONTAINER_HOTSEAT : LauncherSettings.Favorites.CONTAINER_DESKTOP; final int screen = indexOfChild(cellLayout); if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage && mState != State.SPRING_LOADED) { snapToPage(screen); } if (info instanceof PendingAddItemInfo) { final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; boolean findNearestVacantCell = true; if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, cellLayout, mTargetCell); float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, distance)) { findNearestVacantCell = false; } } final ItemInfo item = (ItemInfo) d.dragInfo; if (findNearestVacantCell) { int minSpanX = item.spanX; int minSpanY = item.spanY; if (item.minSpanX > 0 && item.minSpanY > 0) { minSpanX = item.minSpanX; minSpanY = item.minSpanY; } int[] resultSpan = new int[2]; mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); item.spanX = resultSpan[0]; item.spanY = resultSpan[1]; } Runnable onAnimationCompleteRunnable = new Runnable() { @Override public void run() { // When dragging and dropping from customization tray, we deal with creating // widgets/shortcuts/folders in a slightly different way switch (pendingInfo.itemType) { case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: int span[] = new int[2]; span[0] = item.spanX; span[1] = item.spanY; mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, container, screen, mTargetCell, span, null); break; case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: mLauncher.processShortcutFromDrop(pendingInfo.componentName, container, screen, mTargetCell, null); break; default: throw new IllegalStateException("Unknown item type: " + pendingInfo.itemType); } } }; View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; } animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, animationStyle, finalView, true); } else { // This is for other drag/drop cases, like dragging from All Apps View view = null; switch (info.itemType) { case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: if (info.container == NO_ID && info instanceof ApplicationInfo) { // Came from all apps -- make a copy info = new ShortcutInfo((ApplicationInfo) info); } view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); break; case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, (FolderInfo) info, mIconCache); if (mHideIconLabels) { ((FolderIcon) view).setTextVisible(false); } break; default: throw new IllegalStateException("Unknown item type: " + info.itemType); } // First we find the cell nearest to point at which the item is // dropped, without any consideration to whether there is an item there. if (touchXY != null) { mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, cellLayout, mTargetCell); float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); d.postAnimationRunnable = exitSpringLoadedRunnable; if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, true, d.dragView, d.postAnimationRunnable)) { return; } if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, true)) { return; } } if (touchXY != null) { // when dragging and dropping, just find the closest free spot mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 1, 1, 1, 1, null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); } else { cellLayout.findCellForSpan(mTargetCell, 1, 1); } addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, info.spanY, insertAtFirst); cellLayout.onDropChild(view); CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); cellLayout.getShortcutsAndWidgets().measureChild(view); LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, lp.cellX, lp.cellY); if (d.dragView != null) { // We wrap the animation call in the temporary set and reset of the current // cellLayout to its final transform -- this means we animate the drag view to // the correct final location. setFinalTransitionTransform(cellLayout); mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, exitSpringLoadedRunnable); resetTransitionTransform(cellLayout); } } } public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, widgetInfo.spanY, widgetInfo, false); int visibility = layout.getVisibility(); layout.setVisibility(VISIBLE); int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], Bitmap.Config.ARGB_8888); Canvas c = new Canvas(b); layout.measure(width, height); layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); layout.draw(c); c.setBitmap(null); layout.setVisibility(visibility); return b; } private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, boolean external, boolean scale) { // Now we animate the dragView, (ie. the widget or shortcut preview) into its final // location and size on the home screen. int spanX = info.spanX; int spanY = info.spanY; Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); loc[0] = r.left; loc[1] = r.top; setFinalTransitionTransform(layout); float cellLayoutScale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); resetTransitionTransform(layout); float dragViewScaleX; float dragViewScaleY; if (scale) { dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); } else { dragViewScaleX = 1f; dragViewScaleY = 1f; } // The animation will scale the dragView about its center, so we need to center about // the final location. loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; scaleXY[0] = dragViewScaleX * cellLayoutScale; scaleXY[1] = dragViewScaleY * cellLayoutScale; } public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, final Runnable onCompleteRunnable, int animationType, final View finalView, boolean external) { Rect from = new Rect(); mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); int[] finalPos = new int[2]; float scaleXY[] = new float[2]; boolean scalePreview = !(info instanceof PendingAddShortcutInfo); getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, external, scalePreview); Resources res = mLauncher.getResources(); int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; // In the case where we've prebound the widget, we remove it from the DragLayer if (finalView instanceof AppWidgetHostView && external) { Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); mLauncher.getDragLayer().removeView(finalView); } if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); dragView.setCrossFadeBitmap(crossFadeBitmap); dragView.crossFade((int) (duration * 0.8f)); } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); } DragLayer dragLayer = mLauncher.getDragLayer(); if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); } else { int endStyle; if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; } else { endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; } Runnable onComplete = new Runnable() { @Override public void run() { if (finalView != null) { finalView.setVisibility(VISIBLE); } if (onCompleteRunnable != null) { onCompleteRunnable.run(); } } }; dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, duration, this); } } public void setFinalTransitionTransform(CellLayout layout) { if (isSwitchingState()) { int index = indexOfChild(layout); mCurrentScaleX = layout.getScaleX(); mCurrentScaleY = layout.getScaleY(); mCurrentTranslationX = layout.getTranslationX(); mCurrentTranslationY = layout.getTranslationY(); mCurrentRotationY = layout.getRotationY(); layout.setScaleX(mNewScaleXs[index]); layout.setScaleY(mNewScaleYs[index]); layout.setTranslationX(mNewTranslationXs[index]); layout.setTranslationY(mNewTranslationYs[index]); layout.setRotationY(mNewRotationYs[index]); } } public void resetTransitionTransform(CellLayout layout) { if (isSwitchingState()) { mCurrentScaleX = layout.getScaleX(); mCurrentScaleY = layout.getScaleY(); mCurrentTranslationX = layout.getTranslationX(); mCurrentTranslationY = layout.getTranslationY(); mCurrentRotationY = layout.getRotationY(); layout.setScaleX(mCurrentScaleX); layout.setScaleY(mCurrentScaleY); layout.setTranslationX(mCurrentTranslationX); layout.setTranslationY(mCurrentTranslationY); layout.setRotationY(mCurrentRotationY); } } /** * Return the current {@link CellLayout}, correctly picking the destination * screen while a scroll is in progress. */ public CellLayout getCurrentDropLayout() { return (CellLayout) getChildAt(getNextPage()); } /** * Return the current CellInfo describing our current drag; this method exists * so that Launcher can sync this object with the correct info when the activity is created/ * destroyed * */ public CellLayout.CellInfo getDragInfo() { return mDragInfo; } /** * Calculate the nearest cell where the given object would be dropped. * * pixelX and pixelY should be in the coordinate system of layout */ private int[] findNearestArea(int pixelX, int pixelY, int spanX, int spanY, CellLayout layout, int[] recycle) { return layout.findNearestArea( pixelX, pixelY, spanX, spanY, recycle); } void setup(DragController dragController) { mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); mDragController = dragController; // hardware layers on children are enabled on startup, but should be disabled until // needed updateChildrenLayersEnabled(); setWallpaperDimension(); if (!mScrollWallpaper) { centerWallpaperOffset(); } } /** * Called at the end of a drag which originated on the workspace. */ public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, boolean success) { if (success) { if (target != this) { if (mDragInfo != null) { getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); if (mDragInfo.cell instanceof DropTarget) { mDragController.removeDropTarget((DropTarget) mDragInfo.cell); } } } } else if (mDragInfo != null) { CellLayout cellLayout; if (mLauncher.isHotseatLayout(target)) { cellLayout = mLauncher.getHotseat().getLayout(); } else { cellLayout = (CellLayout) getChildAt(mDragInfo.screen); } cellLayout.onDropChild(mDragInfo.cell); } if (d.cancelled && mDragInfo.cell != null) { mDragInfo.cell.setVisibility(VISIBLE); } mDragOutline = null; mDragInfo = null; // Hide the scrolling indicator after you pick up an item hideScrollingIndicator(false); } void updateItemLocationsInDatabase(CellLayout cl) { int count = cl.getShortcutsAndWidgets().getChildCount(); int screen = indexOfChild(cl); int container = Favorites.CONTAINER_DESKTOP; if (mLauncher.isHotseatLayout(cl)) { screen = -1; container = Favorites.CONTAINER_HOTSEAT; } for (int i = 0; i < count; i++) { View v = cl.getShortcutsAndWidgets().getChildAt(i); ItemInfo info = (ItemInfo) v.getTag(); // Null check required as the AllApps button doesn't have an item info if (info != null) { LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, info.cellY, info.spanX, info.spanY); } } } @Override public boolean supportsFlingToDelete() { return true; } @Override public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { // Do nothing } @Override public void onFlingToDeleteCompleted() { // Do nothing } public boolean isDropEnabled() { return true; } @Override protected void onRestoreInstanceState(Parcelable state) { super.onRestoreInstanceState(state); Launcher.setScreen(mCurrentPage); } @Override public void scrollLeft() { if (!isSmall() && !mIsSwitchingState) { super.scrollLeft(); } Folder openFolder = getOpenFolder(); if (openFolder != null) { openFolder.completeDragExit(); } } @Override public void scrollRight() { if (!isSmall() && !mIsSwitchingState) { super.scrollRight(); } Folder openFolder = getOpenFolder(); if (openFolder != null) { openFolder.completeDragExit(); } } @Override public boolean onEnterScrollArea(int x, int y, int direction) { // Ignore the scroll area if we are dragging over the hot seat boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); if (mLauncher.getHotseat() != null && isPortrait) { Rect r = new Rect(); mLauncher.getHotseat().getHitRect(r); if (r.contains(x, y)) { return false; } } boolean result = false; if (!isSmall() && !mIsSwitchingState) { mInScrollArea = true; final int page = getNextPage() + (direction == DragController.SCROLL_LEFT ? -1 : 1); // We always want to exit the current layout to ensure parity of enter / exit setCurrentDropLayout(null); if (0 <= page && page < getChildCount()) { CellLayout layout = (CellLayout) getChildAt(page); setCurrentDragOverlappingLayout(layout); // Workspace is responsible for drawing the edge glow on adjacent pages, // so we need to redraw the workspace when this may have changed. invalidate(); result = true; } } return result; } @Override public boolean onExitScrollArea() { boolean result = false; if (mInScrollArea) { invalidate(); CellLayout layout = getCurrentDropLayout(); setCurrentDropLayout(layout); setCurrentDragOverlappingLayout(layout); result = true; mInScrollArea = false; } return result; } private void onResetScrollArea() { setCurrentDragOverlappingLayout(null); mInScrollArea = false; } /** * Returns a specific CellLayout */ CellLayout getParentCellLayoutForView(View v) { ArrayList layouts = getWorkspaceAndHotseatCellLayouts(); for (CellLayout layout : layouts) { if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { return layout; } } return null; } /** * Returns a list of all the CellLayouts in the workspace. */ ArrayList getWorkspaceAndHotseatCellLayouts() { ArrayList layouts = new ArrayList(); int screenCount = getChildCount(); for (int screen = 0; screen < screenCount; screen++) { layouts.add(((CellLayout) getChildAt(screen))); } if (mLauncher.getHotseat() != null) { layouts.add(mLauncher.getHotseat().getLayout()); } return layouts; } /** * We should only use this to search for specific children. Do not use this method to modify * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from * the hotseat and workspace pages */ ArrayList getAllShortcutAndWidgetContainers() { ArrayList childrenLayouts = new ArrayList(); int screenCount = getChildCount(); for (int screen = 0; screen < screenCount; screen++) { childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); } if (mLauncher.getHotseat() != null) { childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); } return childrenLayouts; } public Folder getFolderForTag(Object tag) { ArrayList childrenLayouts = getAllShortcutAndWidgetContainers(); for (ShortcutAndWidgetContainer layout: childrenLayouts) { int count = layout.getChildCount(); for (int i = 0; i < count; i++) { View child = layout.getChildAt(i); if (child instanceof Folder) { Folder f = (Folder) child; if (f.getInfo() == tag && f.getInfo().opened) { return f; } } } } return null; } public View getViewForTag(Object tag) { ArrayList childrenLayouts = getAllShortcutAndWidgetContainers(); for (ShortcutAndWidgetContainer layout: childrenLayouts) { int count = layout.getChildCount(); for (int i = 0; i < count; i++) { View child = layout.getChildAt(i); if (child.getTag() == tag) { return child; } } } return null; } void clearDropTargets() { ArrayList childrenLayouts = getAllShortcutAndWidgetContainers(); for (ShortcutAndWidgetContainer layout: childrenLayouts) { int childCount = layout.getChildCount(); for (int j = 0; j < childCount; j++) { View v = layout.getChildAt(j); if (v instanceof DropTarget) { mDragController.removeDropTarget((DropTarget) v); } } } } void removeItems(final ArrayList apps) { final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); final HashSet packageNames = new HashSet(); final int appCount = apps.size(); for (int i = 0; i < appCount; i++) { packageNames.add(apps.get(i).componentName.getPackageName()); } ArrayList cellLayouts = getWorkspaceAndHotseatCellLayouts(); for (final CellLayout layoutParent: cellLayouts) { final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); // Avoid ANRs by treating each screen separately post(new Runnable() { public void run() { final ArrayList childrenToRemove = new ArrayList(); childrenToRemove.clear(); int childCount = layout.getChildCount(); for (int j = 0; j < childCount; j++) { final View view = layout.getChildAt(j); Object tag = view.getTag(); if (tag instanceof ShortcutInfo) { final ShortcutInfo info = (ShortcutInfo) tag; final Intent intent = info.intent; final ComponentName name = intent.getComponent(); if (name != null) { if (packageNames.contains(name.getPackageName())) { LauncherModel.deleteItemFromDatabase(mLauncher, info); childrenToRemove.add(view); } } } else if (tag instanceof FolderInfo) { final FolderInfo info = (FolderInfo) tag; final ArrayList contents = info.contents; final int contentsCount = contents.size(); final ArrayList appsToRemoveFromFolder = new ArrayList(); for (int k = 0; k < contentsCount; k++) { final ShortcutInfo appInfo = contents.get(k); final Intent intent = appInfo.intent; final ComponentName name = intent.getComponent(); if (name != null) { if (packageNames.contains(name.getPackageName())) { appsToRemoveFromFolder.add(appInfo); } } } for (ShortcutInfo item: appsToRemoveFromFolder) { info.remove(item); LauncherModel.deleteItemFromDatabase(mLauncher, item); } } else if (tag instanceof LauncherAppWidgetInfo) { final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; final ComponentName provider = info.providerName; if (provider != null) { if (packageNames.contains(provider.getPackageName())) { LauncherModel.deleteItemFromDatabase(mLauncher, info); childrenToRemove.add(view); } } } } childCount = childrenToRemove.size(); for (int j = 0; j < childCount; j++) { View child = childrenToRemove.get(j); // Note: We can not remove the view directly from CellLayoutChildren as this // does not re-mark the spaces as unoccupied. layoutParent.removeViewInLayout(child); if (child instanceof DropTarget) { mDragController.removeDropTarget((DropTarget)child); } } if (childCount > 0) { layout.requestLayout(); layout.invalidate(); } } }); } // It is no longer the case the BubbleTextViews correspond 1:1 with the workspace items in // the database (and LauncherModel) since shortcuts are not added and animated in until // the user returns to launcher. As a result, we really should be cleaning up the Db // regardless of whether the item was added or not (unlike the logic above). This is only // relevant for direct workspace items. post(new Runnable() { @Override public void run() { String spKey = LauncherApplication.getSharedPreferencesKey(); SharedPreferences sp = getContext().getSharedPreferences(spKey, Context.MODE_PRIVATE); Set newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, null); for (String packageName: packageNames) { // Remove all items that have the same package, but were not removed above ArrayList infos = mLauncher.getModel().getShortcutInfosForPackage(packageName); for (ShortcutInfo info : infos) { LauncherModel.deleteItemFromDatabase(mLauncher, info); } // Remove all queued items that match the same package if (newApps != null) { synchronized (newApps) { Iterator iter = newApps.iterator(); while (iter.hasNext()) { try { Intent intent = Intent.parseUri(iter.next(), 0); String pn = ItemInfo.getPackageName(intent); if (packageNames.contains(pn)) { iter.remove(); } } catch (URISyntaxException e) {} } } } } } }); } void updateShortcuts(ArrayList apps) { ArrayList childrenLayouts = getAllShortcutAndWidgetContainers(); for (ShortcutAndWidgetContainer layout: childrenLayouts) { int childCount = layout.getChildCount(); for (int j = 0; j < childCount; j++) { final View view = layout.getChildAt(j); Object tag = view.getTag(); if (tag instanceof ShortcutInfo) { ShortcutInfo info = (ShortcutInfo) tag; // We need to check for ACTION_MAIN otherwise getComponent() might // return null for some shortcuts (for instance, for shortcuts to // web pages.) final Intent intent = info.intent; final ComponentName name = intent.getComponent(); if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { final int appCount = apps.size(); for (int k = 0; k < appCount; k++) { ApplicationInfo app = apps.get(k); if (app.componentName.equals(name)) { BubbleTextView shortcut = (BubbleTextView) view; info.updateIcon(mIconCache); info.title = app.title.toString(); shortcut.applyFromShortcutInfo(info, mIconCache); } } } } } } } void moveToDefaultScreen(boolean animate) { if (!isSmall()) { if (animate) { snapToPage(mDefaultHomescreen); } else { setCurrentPage(mDefaultHomescreen); } } getChildAt(mDefaultHomescreen).requestFocus(); } @Override public void syncPages() { } @Override public void syncPageItems(int page, boolean immediate) { } @Override protected String getCurrentPageDescription() { int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; return String.format(getContext().getString(R.string.workspace_scroll_format), page + 1, getChildCount()); } public void getLocationInDragLayer(int[] loc) { mLauncher.getDragLayer().getLocationInDragLayer(this, loc); } void setFadeForOverScroll(float fade) { if (!isScrollingIndicatorEnabled()) return; mOverscrollFade = fade; float reducedFade = 0.5f + 0.5f * (1 - fade); final ViewGroup parent = (ViewGroup) getParent(); final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); final View scrollIndicator = getScrollingIndicator(); cancelScrollingIndicatorAnimations(); if (qsbDivider != null && mShowSearchBar) qsbDivider.setAlpha(reducedFade); if (dockDivider != null && mShowDockDivider) dockDivider.setAlpha(reducedFade); if (scrollIndicator != null && mShowScrollingIndicator) scrollIndicator.setAlpha(1 - fade); } }