/*
 * @(#)AllFonts.java	1.18 98/06/29
 *
 * Copyright 1998 by Sun Microsystems, Inc.,
 * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
 * All rights reserved.
 *
 * This software is the confidential and proprietary information
 * of Sun Microsystems, Inc. ("Confidential Information").  You
 * shall not disclose such Confidential Information and shall use
 * it only in accordance with the terms of the license agreement
 * you entered into with Sun.
 */


package demos.Fonts;


import java.awt.*;
import java.awt.event.*;
import java.awt.font.FontRenderContext;
import java.awt.font.TextLayout;
import java.util.Vector;
import J2DCanvas;


/**
 * Scrolling text of fonts returned from GraphicsEnvironment.getAllFonts().
 */
public class AllFonts extends J2DCanvas {

    private Vector fonts = new Vector();
    private Vector v = new Vector();
    private int nStrs;
    private int strH;
    private int fi;


    public AllFonts() {
	setBackground(Color.white);
	GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        Font allfonts[] = ge.getAllFonts();
	for (int i = 0; i < allfonts.length; i++) {
	    if (allfonts[i].canDisplayUpTo(allfonts[i].getName()) > 0) {
		fonts.addElement(allfonts[i]);
	    }
	}
	sleepAmount = 200;
	runnable = true;
    }


    public void drawDemo(Graphics2D g2) {


	if (fi < fonts.size()) {
	    Font f = new Font(((Font)fonts.get(fi)).getName(),Font.PLAIN,14);
	    v.addElement(new TextLayout(f.getName(),f,g2.getFontRenderContext()));
	}

	if (newBufferedImage) {
  	    TextLayout tl = (TextLayout) v.firstElement();
	    strH = (int) (tl.getAscent()+tl.getDescent());
	    nStrs = h/strH + 1;
	    fi = 0;
	}

	g2.setColor(Color.black);

	if (v.size() == nStrs && v.size() != 0 || fi > fonts.size()) {
	    v.removeElementAt(0);
	}

	int yy = (fi >= fonts.size()) ? 0 : h - v.size() * strH - strH/2;

        for (int i = 0; i < v.size(); i++) {
  	    int sw = (int) ((TextLayout)v.get(i)).getBounds().getWidth();
  	    ((TextLayout) v.get(i)).draw(g2, (int) (w/2-sw/2),yy += strH);
	}

	fi = (v.size() == 0) ? 0 : ++fi;
    }


    public static void main(String argv[]) {
	final AllFonts demo = new AllFonts();
	WindowListener l = new WindowAdapter() {
	    public void windowClosing(WindowEvent e) {System.exit(0);}
	    public void windowDeiconified(WindowEvent e) { demo.start(); }
	    public void windowIconified(WindowEvent e) { demo.stop(); }
	};
	Frame f = new Frame("Java2D Demo - AllFonts");
	f.addWindowListener(l);
	f.add("Center", demo);
	f.pack();
	f.setSize(new Dimension(400,200));
	f.show();
	demo.start();
    }
}