Discuz.Web/silverlight/album/LayoutManager.cs

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using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

using System.Diagnostics;
using System.Collections.ObjectModel;
using System.Windows.Interop;

using DiscuzAlbum.UserControl;

namespace DiscuzAlbum
{
    // enum AlbumStatus
    public enum AlbumStatus { Sorted, Random, Hanging };
    public enum ZoomStatus { In, Out };

    public class LayoutManager
    {
        #region Properties
        private Canvas _target;
        private Canvas _targetShadow;
        private SortNavigator _sortNavi;
        private double _sliceWidth;
        private int _cols;
        private int _rows;
        private Collection<Point> _axisSet;
        private Collection<Point> _randomPositionSet;
        private Point _sortCenterPosition;      // for the first sort slice.
        private int _currentSortSliceIndex;       // first sort slice index.
        private int _sortBufferCount;           // buffer slice count.
        private double _zoomoutScale;
        private Canvas _zoomOutTrigger;
        private Canvas _btnSort;
        private Canvas _btnRandom;
        private GenuineSlice _genuineSlice;
        private PhotoDataSet _dataSource;
        private AlbumStatus _status;
        private ZoomStatus _zoomStatus;
        private int _randomSliceCount;
        private int _renderedSliceCount;
        private Storyboard _zoomInStoryboard;
        private Storyboard _zoomOutStoryboard;
        private Storyboard _rotateToAngleStoryboard;
        private Storyboard _animateToPositionStoryboard;
        private Storyboard _layoutStandByStoryboard;

        private PhotoSlice _currentRandomSlice;
        private PhotoSlice _currentSlice;
        private int _currentScreen;
        private int _totalScreens;

        private bool _isSliceRequest;

        private Image _screenArrowLeft;