import java.applet.*;
import java.awt.*;

public class randcnvs extends Canvas
	{
	private int PaintSeq;
	private Image LogoImg;
	private Dimension dimCnvs;

	public randcnvs()
		{
		dimCnvs = new Dimension();
		PaintSeq = 0;
		LogoImg = null;
		}

	/* Set the Image to be used as a logo */

	public void SetLogoImage(Image i)
		{
		LogoImg = i;
		}

	/* Return the smallest square inside the canvas, this area is the one we
		actually do the painting inside */

	public Dimension GetDrawSize()
		{
		return dimCnvs;		// TEMPORARY
		}

	/* Draw a string centered in the canvas at the given y-height */

	private void CentreString(String s, int y, Graphics g)
		{
		FontMetrics fm = g.getFontMetrics();
		int logolen = fm.stringWidth(s);
		g.drawString(s,(dimCnvs.width-logolen)/2,y);
		}

	/* On paint we reset the drawing canvas to its original logo */

	public void paint(Graphics g)
		{
		dimCnvs = size();
		int iw = LogoImg.getWidth(this);
		int ih = LogoImg.getHeight(this);
		g.setColor(Color.black);
		g.fillRect(0,0,dimCnvs.width,dimCnvs.height);
		g.drawImage(LogoImg,(dimCnvs.width-iw)/2,(dimCnvs.height-ih)/2,iw,ih,Color.white,this); // Centered
		//g.drawImage(LogoImg,0,0,dimCnvs.width,dimCnvs.height,Color.white,this);	// Full Window
		g.setColor(Color.yellow);
		CentreString("Version: 1.14   Date: 26-Jan-98   Author: Greg Keogh",dimCnvs.height-20,g);
		++PaintSeq;
		}
	}