// --------------------------- top of file Button4_Direction.cs ----------------------------  
using System.Windows.Forms;
using System.Drawing;
using System;

public class Button4_Direction : Panel { 
	// ============== new versions ================ 
	public new string Text="S";  
	public new EventHandler Click;
	// ============================================ 
    bool pushed = false, valid=false;
	Timer timer;
	public Button4_Direction() {  
		timer = new Timer();
		timer.Interval = 100;
		timer.Tick += tick; 
		MouseMove += (s, e) => { 
			if(pushed && e.X > 0 && e.Y > 0 
							&& e.X < this.Width && e.Y < this.Height) { 
				if (!valid) { valid = true;  Invalidate(); } 
			} else if (valid) { 
				valid = false;  Invalidate(); } 
		}; 
	} // ========================================================== 
	protected override void OnMouseDown(MouseEventArgs e) { 
		pushed = true; valid = true; 
		tick(null, null); 
		timer.Start(); 
		Invalidate();
	} // ========================================================== 
    protected override void OnMouseUp(MouseEventArgs e) { 
		pushed = false; valid = false;  
		timer.Stop(); 
		count = 0; 		
		Invalidate(); 
	} // ========================================================== 
	int count = 0; 
	private void tick(object o, EventArgs e) { 
		if (valid && (count == 0 || count > 8)) { Click(this, null); } 
		count++; 
	} // ========================================================== 
	protected override void OnPaint(PaintEventArgs pevent) { 
		Graphics g = pevent.Graphics;
		base.OnPaint(pevent); 
		g.DrawRectangle(new Pen(ForeColor), 0, 0, this.Width-1, this.Height-1); 
		g.DrawRectangle(new Pen(Color.Black,2), 2, 2, this.Width-4, this.Height-4); 
		if (valid) {
			g.TranslateTransform(2, 2); 
		} else {
			g.TranslateTransform(1, 1); } 
		g.FillRectangle(new SolidBrush(BackColor), 0, 0, this.Width-4, this.Height-4);  
		int x0 = this.Width / 2-3, y0 = this.Height / 2-3;
		int s = this.Width / 7, m = this.Width*2 / 7; 
		if (Text == "W") {
			g.FillPolygon(new SolidBrush(ForeColor), new Point[]{
				new Point(x0-s,y0), new Point(x0+s,y0+m), new Point(x0+s,y0-m)}); 
		} else if (Text == "E") {
			g.FillPolygon(new SolidBrush(ForeColor), new Point[]{
				new Point(x0+s,y0), new Point(x0-s,y0-m), new Point(x0-s,y0+m)}); 
		} else if (Text == "N") {
			g.FillPolygon(new SolidBrush(ForeColor), new Point[]{
				new Point(x0,y0-s-1), new Point(x0-m,y0+s), new Point(x0+m,y0+s)}); 
		} else if (Text == "S") {
			g.FillPolygon(new SolidBrush(ForeColor), new Point[]{
				new Point(x0,y0+s), new Point(x0+m,y0-s), new Point(x0-m,y0-s)}); 
		} else {  
			stringcenter(g, this.Width / 2, this.Height / 2); } 
	} // ========================================================== 
	private void stringcenter(Graphics g, int x, int y) { 
        StringFormat strfmt=StringFormat.GenericTypographic; // フォントの幅が正確に求められる！！！
        strfmt.FormatFlags |= StringFormatFlags.MeasureTrailingSpaces;   
        SizeF sizef=g.MeasureString(Text, this.Font, new Point(0,0), strfmt);  
		g.DrawString(Text, this.Font, new SolidBrush(ForeColor), x-sizef.Width / 2-4, 
			y-sizef.Height / 2-2); 
	} // ========================================================== 
} // ###################### end of class Button4_Direction ###################### 
// --------------------------- bottom of file Button4_Direction.cs --------------------------