/* Zplet, a Z-Machine interpreter in Java */
/* Copyright 1996,2001 Matthew T. Russotto */
/* As of 23 February 2001, this code is open source and covered by the */
/* Artistic License, found within this package */

package org.zplet.awt.screenmodel;

import java.awt.*;

class ZCursor {
	Color cursorcolor, bgcolor;
	boolean shown;
	int t, l, w, h;
	Component parent;

	ZCursor(Color cursorcolor, Color bgcolor, Component parent) {
		shown = false;
		this.cursorcolor = cursorcolor;
		this.bgcolor = bgcolor;
		this.parent = parent;
	}

	ZCursor(Component parent) {
		this(Color.green, Color.yellow, parent);
	}

	ZCursor() {
		this(Color.green, Color.yellow, null);
	}

	synchronized void show() {
		Graphics g;

		if (!shown) {
			shown = true;
			if (parent != null) {
				g = parent.getGraphics();
				if (g != null) {
					g.setColor(cursorcolor);
					g.fillRect(l, t, w, h);
				}
			}
		}
	}

	synchronized void hide() {
		if (shown) {
			shown = false;
			if (parent != null) {
				parent.repaint(l, t, w, h);
				// g.setColor(bgcolor);
				// g.fillRect(l,t,w,h);
			}
		}
	}

	synchronized void redraw(Graphics g) {
		if (shown) {
			g.setColor(cursorcolor);
			g.fillRect(l, t, w, h);
		}
	}

	synchronized void move(int l, int t) {
		boolean wasshown = shown;

		if (wasshown)
			hide();
		this.l = l;
		this.t = t;
		if (wasshown)
			show();
	}

	synchronized void size(int w, int h) {
		boolean wasshown = shown;

		if (wasshown)
			hide();
		this.w = w;
		this.h = h;
		if (wasshown)
			show();
	}

	// synchronized void setGraphics(Graphics g) {
	// boolean wasshown = shown;
	//
	// this.g = g;
	// g.setColor(cursorcolor);
	// g.setXORMode(bgcolor);
	// if (wasshown)
	// show();
	// }

	synchronized void setcolors(Color cursorcolor, Color bgcolor) {
		boolean wasshown = shown;

		if (wasshown)
			hide();
		this.cursorcolor = cursorcolor;
		this.bgcolor = bgcolor;
		if (wasshown)
			show();
	}
}