missingicon.java

来自「java tutotrials or beginners」· Java 代码 · 共 83 行

/*
 * Copyright (c) 1995 - 2008 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
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 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
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 *   - Redistributions in binary form must reproduce the above copyright
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 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 */ 

package components;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.Icon;

/**
 * The "missing icon" is a white box with a black border and a red x.
 * It's used to display something when there are issues loading an
 * icon from an external location.
 *
 * @author Collin Fagan
 * @date 7/25/2007
 */
public class MissingIcon implements Icon{
    
    private int width = 32;
    private int height = 32;
    
    private BasicStroke stroke = new BasicStroke(4);
    
    public void paintIcon(Component c, Graphics g, int x, int y) {
        Graphics2D g2d = (Graphics2D) g.create();
        
        g2d.setColor(Color.WHITE);
        g2d.fillRect(x +1 ,y + 1,width -2 ,height -2);
        
        g2d.setColor(Color.BLACK);
        g2d.drawRect(x +1 ,y + 1,width -2 ,height -2);
        
        g2d.setColor(Color.RED);
        
        g2d.setStroke(stroke);
        g2d.drawLine(x +10, y + 10, x + width -10, y + height -10);
        g2d.drawLine(x +10, y + height -10, x + width -10, y + 10);
        
        g2d.dispose();
    }
    
    public int getIconWidth() {
        return width;
    }
    
    public int getIconHeight() {
        return height;
    }
    
}