//絵の書けるピクチャーボックスクラス
//マウスのボタンにより、直線や円などが書けます
//また絵をファイルに保存も出来ます

//PanelX mePanel;
//private void Form1_Load(object sender, System.EventArgs e)
//{
//	mePanel = new PanelX();
//	mePanel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
//	mePanel.Location = new System.Drawing.Point(24, 32);
//	mePanel.Size = new System.Drawing.Size(400, 400);
//	this.Controls.Add(mePanel);
//}

using System;

public class PanelX : System.Windows.Forms.PictureBox
{
	public PanelX()
	{
		this.Paint += new System.Windows.Forms.PaintEventHandler(this._Paint);
		this.MouseMove += new System.Windows.Forms.MouseEventHandler(this._MouseMove);
		this.MouseDown += new System.Windows.Forms.MouseEventHandler(this._MouseDown);
		this.MouseUp += new System.Windows.Forms.MouseEventHandler(this._MouseUp);
	}

	const int Line = 10;
	const int Pai =20;

	[Serializable]
	struct data{
		public data(data pos)
		{
			this.i_DrowMode = pos.i_DrowMode;
			this.i_stX = pos.i_stX;
			this.i_stY = pos.i_stY;
			this.i_enX = pos.i_enX;
			this.i_enY = pos.i_enY;
		}
		public int i_DrowMode;
		public int i_stX,i_stY;
		public int i_enX,i_enY;
	}

	data pos=new data();

	System.Collections.ArrayList ar = new System.Collections.ArrayList();

	private void _MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
	{
			pos.i_stX = e.X;
			pos.i_stY = e.Y;
	}

	private void _MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
	{
		if(e.Button ==System.Windows.Forms.MouseButtons.Left )
		{
			pos.i_DrowMode =Line;
			ar.Add(new data(pos));
			this.Refresh();
		}
		else if(e.Button ==System.Windows.Forms.MouseButtons.Middle)
		{
			pos.i_DrowMode =Pai;
			ar.Add(new data(pos));
			this.Refresh();
		}
	}

	private void _MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
	{
		if(e.Button ==System.Windows.Forms.MouseButtons.Left )
		{
			pos.i_DrowMode =Line;
			pos.i_enX = e.X;
			pos.i_enY = e.Y;
		}
		else if(e.Button ==System.Windows.Forms.MouseButtons.Right)
		{
			pos.i_DrowMode =Line;
			pos.i_enX = e.X;
			pos.i_enY = e.Y;
			ar.Add(new data(pos));
			pos.i_stX = e.X;
			pos.i_stY = e.Y;
		}
		else if(e.Button ==System.Windows.Forms.MouseButtons.Middle)
		{
			pos.i_DrowMode =Pai;
			pos.i_enX = e.X;
			pos.i_enY = e.Y;
		}
		this.Refresh();
	}

	private void _Paint(object sender, System.Windows.Forms.PaintEventArgs e)
	{
		if(pos.i_DrowMode ==Line){	
			System.Drawing.Pen pen=new System.Drawing.Pen(System.Drawing.Color.Red );
			System.Drawing.Point pt1=new System.Drawing.Point(pos.i_stX,pos.i_stY);
			System.Drawing.Point pt2=new System.Drawing.Point(pos.i_enX,pos.i_enY);
			e.Graphics.DrawLine(pen,pt1,pt2);
		} 
		else if(pos.i_DrowMode ==Pai)
		{
			System.Drawing.Pen pen=new System.Drawing.Pen(System.Drawing.Color.Red );
			System.Drawing.Rectangle rect=new System.Drawing.Rectangle();
			rect.X=pos.i_stX;
			rect.Y=pos.i_stY;
			rect.Height =pos.i_enY-pos.i_stY;
			rect.Width =pos.i_enX-pos.i_stX;
			e.Graphics.DrawEllipse(pen,rect);
		}

		for(int i=0;i<ar.Count;i++){
			data d_pos=(data)ar[i];
			if(d_pos.i_DrowMode ==Line)
			{
				System.Drawing.Pen pen=new System.Drawing.Pen(System.Drawing.Color.Black  );
				System.Drawing.Point pt1=new System.Drawing.Point(d_pos.i_stX,d_pos.i_stY);
				System.Drawing.Point pt2=new System.Drawing.Point(d_pos.i_enX,d_pos.i_enY);
				e.Graphics.DrawLine(pen,pt1,pt2);
			} 
			else if(d_pos.i_DrowMode ==Pai)
			{
				System.Drawing.Pen pen=new System.Drawing.Pen(System.Drawing.Color.Black );
				System.Drawing.Rectangle rect=new System.Drawing.Rectangle();
				rect.X=d_pos.i_stX;
				rect.Y=d_pos.i_stY;
				rect.Height =d_pos.i_enY-d_pos.i_stY;
				rect.Width =d_pos.i_enX-d_pos.i_stX;
				e.Graphics.DrawEllipse(pen,rect);
			}
		}
		System.Diagnostics.Trace.WriteLine(ar.Count);
	}
	public void SaveFile(System.String filename)
	{
		System.Runtime.Serialization.Formatters.Binary.BinaryFormatter bf = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
		System.IO.FileStream fs = new System.IO.FileStream(filename,System.IO.FileMode.Create);
		bf.Serialize(fs, ar);
		fs.Close();
	}
	public void LoadFile(System.String filename)
	{
		System.Runtime.Serialization.Formatters.Binary.BinaryFormatter bf = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
		System.IO.FileStream fs = new System.IO.FileStream(filename,System.IO.FileMode.Open);
		ar=(System.Collections.ArrayList)bf.Deserialize(fs);
		fs.Close();
		this.Refresh();
	}
}