demofonts.java

一个小公司要求给写的很简单的任务管理系统。

/*
 * @(#)DemoFonts.java	1.17 06/08/29
 * 
 * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * -Redistribution of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 * 
 * -Redistribution in binary form must reproduce the above copyright notice, 
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of contributors may 
 * be used to endorse or promote products derived from this software without 
 * specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL 
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST 
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, 
 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY 
 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, 
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
 * nuclear facility.
 */

/*
 * @(#)DemoFonts.java	1.17 06/08/29
 */


package java2d;

import java.awt.Font;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.io.File;
import java.io.InputStream;
import java.io.FileInputStream;


/**
 * A cache of the dynamically loaded fonts found in the fonts directory.
 */
public class DemoFonts {

    // Prepare a static "cache" mapping font names to Font objects.
    private static String[] names =  { "A.ttf" };
    private static Map<String,Font> cache =
               new ConcurrentHashMap<String,Font>(names.length);
    static {
        for (String name : names) {
            cache.put(name, getFont(name));
        }
    }


    public static Font getFont(String name) {
        Font font = null;
        if (cache != null) {
            if ((font = cache.get(name)) != null) {
                return font;
            }
        }
        String fName = "/fonts/" + name;
        try {
            InputStream is = DemoFonts.class.getResourceAsStream(fName);
            font = Font.createFont(Font.TRUETYPE_FONT, is);
        } catch (Exception ex) { 
            ex.printStackTrace(); 
            System.err.println(fName + " not loaded.  Using serif font.");
            font = new Font("serif", Font.PLAIN, 24);
        }
        return font;
    }
}