using System;

using System.Collections.Generic;

using System.Text;

using System.Drawing;

namespace Aga.Controls.Tree

{

	internal class FixedRowHeightLayout : IRowLayout

	{

		private TreeViewAdv _treeView;

		public FixedRowHeightLayout(TreeViewAdv treeView, int rowHeight)

		{

			_treeView = treeView;

			PreferredRowHeight = rowHeight;

		}

		private int _rowHeight;

		public int PreferredRowHeight

		{

			get { return _rowHeight; }

			set { _rowHeight = value; }

		}

		public Rectangle GetRowBounds(int rowNo)

		{

			return new Rectangle(0, rowNo * _rowHeight, 0, _rowHeight);

		}

		public int PageRowCount

		{

			get

			{

				return Math.Max((_treeView.DisplayRectangle.Height - _treeView.ColumnHeaderHeight) / _rowHeight, 0);

			}

		}

		public int CurrentPageSize

		{

			get

			{

				return PageRowCount;

			}

		}

		public int GetRowAt(Point point)

		{

			point = new Point(point.X, point.Y + (_treeView.FirstVisibleRow * _rowHeight) - _treeView.ColumnHeaderHeight);

			return point.Y / _rowHeight;

		}

		public int GetFirstRow(int lastPageRow)

		{

			return Math.Max(0, lastPageRow - PageRowCount + 1);

		}

		public void ClearCache()

		{

		}

	}

}