/* * Gary Cornell and Cay S. Horstmann, Core Java (Book/CD-ROM) * Published By SunSoft Press/Prentice-Hall * Copyright (C) 1996 Sun Microsystems Inc. * All Rights Reserved. ISBN 0-13-565755-5 * * Permission to use, copy, modify, and distribute this * software and its documentation for NON-COMMERCIAL purposes * and without fee is hereby granted provided that this * copyright notice appears in all copies. * * THE AUTHORS AND PUBLISHER MAKE NO REPRESENTATIONS OR * WARRANTIES ABOUT THE SUITABILITY OF THE SOFTWARE, EITHER * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE AUTHORS * AND PUBLISHER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED * BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING * THIS SOFTWARE OR ITS DERIVATIVES. */ /** * @version 1.00 07 Feb 1996 * @author Cay Horstmann */ import java.awt.*; public class CheckboxTest extends Frame { public CheckboxTest() { setTitle("CheckboxTest"); Panel p = new Panel(); p.setLayout(new FlowLayout()); p.add(bold = new Checkbox("Bold")); p.add(italic = new Checkbox("Italic")); add("South", p); fox = new FoxCanvas(); add("Center", fox); } public boolean handleEvent(Event evt) { if (evt.id == Event.WINDOW_DESTROY) System.exit(0); return super.handleEvent(evt); } public boolean action(Event evt, Object arg) { if (evt.target.equals(bold) || evt.target.equals(italic)) { int m = (bold.getState() ? Font.BOLD : 0) + (italic.getState() ? Font.ITALIC : 0); fox.setFont(m); } else return super.action(evt, arg); return true; } public static void main(String[] args) { Frame f = new CheckboxTest(); f.resize(300, 200); f.show(); } private FoxCanvas fox; private Checkbox bold; private Checkbox italic; } class FoxCanvas extends Canvas { public FoxCanvas() { setFont(Font.PLAIN); } public void setFont(int m) { setFont(new Font("Helvetica", m, 12)); repaint(); } public void paint(Graphics g) { g.drawString ("The quick brown fox jumps over the lazy dog.", 0, 50); } }