// --------------------------- top of file Button2_Pusheffective.cs ----------------------------  
using System.Windows.Forms;
using System.Drawing;
using System;

public class Button2_Pusheffective : Panel { 
	// ============== new versions ================ 
	public new string Text; 
	public new Font Font;  
	public new EventHandler Click;
	// ============================================ 
    bool pushed = false, valid=false; 
	public Button2_Pusheffective() {  
		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 OnSizeChanged(EventArgs e) { 
		FontFamily family = base.Font.FontFamily; 
		if (this.Font != null) { family = this.Font.FontFamily; } 
		this.Font = new Font(family, this.Height*3 / 8); 
	} // ========================================================== 
	protected override void OnMouseDown(MouseEventArgs e) { 
		pushed = true; valid = true; 
		Click(this, null);
		Invalidate();
	} // ========================================================== 
    protected override void OnMouseUp(MouseEventArgs e) { 
		pushed = false; valid = false;   
		Invalidate(); 
	} // ==========================================================  
	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);  
		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 Button2_Pusheffective ###################### 
// --------------------------- bottom of file Button2_Pusheffective.cs --------------------------