Canvas/CanvasCtrl/Canvas.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace Canvas
{
	public struct CanvasWrapper : ICanvas
	{
		CanvasCtrl m_canvas; 
		Graphics m_graphics;
		Rectangle m_rect;
		public CanvasWrapper(CanvasCtrl canvas)
		{
			m_canvas = canvas;
			m_graphics = null;
			m_rect = new Rectangle();
		}
		public CanvasWrapper(CanvasCtrl canvas, Graphics graphics, Rectangle clientrect)
		{
			m_canvas = canvas;
			m_graphics = graphics;
			m_rect = clientrect;
		}
		public IModel Model
		{
			get { return m_canvas.Model; }
		}
		public CanvasCtrl CanvasCtrl
		{
			get { return m_canvas; }
		}
		public void Dispose()
		{
			m_graphics = null;
		}
		#region ICanvas Members
		public IModel DataModel
		{
			get { return m_canvas.Model; }
		}
		public UnitPoint ScreenTopLeftToUnitPoint()
		{
			return m_canvas.ScreenTopLeftToUnitPoint();
		}
		public UnitPoint ScreenBottomRightToUnitPoint()
		{
			return m_canvas.ScreenBottomRightToUnitPoint();
		}
		public PointF ToScreen(UnitPoint unitpoint)
		{
			return m_canvas.ToScreen(unitpoint);
		}
		public float ToScreen(double unitvalue)
		{
			return m_canvas.ToScreen(unitvalue);
		}