groupbutton.java

打印管理程序,测试完全通过.windows开发环境.

/*
    $Author: $
    $Date: $
    $Revision: $
    $NoKeywords: $
*/
package jp.co.ntl.awt;

import java.awt.*;

import jp.co.ntl.Util;

public class GroupButton extends AbstractGroupButton {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
    private String text;
    
    public GroupButton(String text, ButtonGroup group) {
        this(text, group, null);
    }

    public GroupButton(String text, ButtonGroup group, Checker checker) {
        super(group, checker);
        this.text = text;
    }

    //
    //  Paint
    //
    public void update(Graphics g) {
        paint(g);
    }

    private Image backImage = null;
    private Graphics gImage = null;
	public void paint(Graphics g) {
        Dimension d = getSize();
		if (d.width == 0 || d.height == 0) {
			return;
		}

        if (backImage == null) {
			backImage = createImage(d.width, d.height);
			gImage = backImage.getGraphics();
		}
       
		paintComponent(gImage);
     	g.drawImage(backImage, 0, 0, this);
	}

    public void paintComponent(Graphics g) {
        Dimension d = getSize();
        g.setColor(getBackground());
        if (pushed) {
            g.fill3DRect(0, 0, d.width, d.height, false);
        } else {
            g.fill3DRect(0, 0, d.width, d.height, true);
        }
        if (text != null) {
            if (pushed) {
                g.setColor(Color.white);//getForeground().brighter());
            } else {
                g.setColor(getForeground());
            }
            int x = Util.basePointX(g.getFontMetrics(), text, d.width);
            int y = Util.basePointY(g.getFontMetrics(), text, d.height);
            g.drawString(text, x, y);
        }
    }    
}