// FractalCanvas.java  (Ver.1.00)
// Fractal Canvas class
// Copyright (C) 1996, 1997 Y.Nagatani
// nagatani@eken.phys.nagoya-u.ac.jp

import java.awt.*;
import Mandelbrot;

public class FractalCanvas extends Canvas {
	
	public	Mandelbrot	mandel;
	public	int		xSize,	ySize;
	public	Image		imBuffer;
	public	Graphics	gBuffer;
	public	int		xMouse1,	yMouse1,
				xMouse2,	yMouse2;
	
	FractalCanvas (int xSize, int ySize, Image imBuffer) {
		
		this.xSize = xSize;
		this.ySize = ySize;
		resize (xSize, ySize);
		
		this.imBuffer = imBuffer;
		this.gBuffer  = imBuffer.getGraphics ();
		
		mandel = new Mandelbrot (xSize, ySize);
		setBackground (Color.red);
		
		xMouse1 = 0;
		yMouse1 = 0;
		xMouse2 = xSize;
		yMouse2 = ySize;
	}
	
	public boolean SubCalculation () {
		
		return	mandel.SubPaint (gBuffer);
	}
	
	public void Calculation () {
		
		gBuffer.setColor (Color.green);
		gBuffer.fillRect (0, 0, xSize , ySize);
		
		mandel.paint (gBuffer);
	}
	
	public void paint (Graphics g) {
		
		g.setColor (getBackground());
		g.setColor (Color.blue);
		g.fillRect (0, 0, xSize , ySize);
		
		g.drawImage (imBuffer, 0, 0, null);
	}
	
	public	boolean	bMouseDowned = false,
			bFirstMouse = true;
	public boolean mouseDown (Event e, int x, int y){
		
		bMouseDowned = true;
		if (bFirstMouse) {
			xMouse1 = x;
			yMouse1 = y;
		} else {
			xMouse2 = x;
			yMouse2 = y;
		}
		bFirstMouse = !bFirstMouse;
		return	false;	// because to put this value to TextFields.
	}
	public void MouseDownedReset () {
		
		bMouseDowned = false;
	}
}