hdesktopbackground.java

一个JAVA做的FTP软件,带源码的,可以很好的进行二次开发,,并带有详细说明文件的

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package net.sf.jftp.gui.framework;

import net.sf.jftp.*;
import net.sf.jftp.config.*;

import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;

import javax.swing.*;


public class HDesktopBackground extends JPanel implements MouseListener,
                                                          ImageObserver
{
    public ActionListener who = null;
    private Image img;
    private String image = null;
    private String cmd = "default";

    public HDesktopBackground(String image, ActionListener who)
    {
        this.image = image;
        this.who = who;

        img = HImage.getImage(this, image);
        addMouseListener(this);
        setVisible(true);
    }

    public void paintComponent(Graphics g)
    {
        if(!Settings.getUseBackground())
        {
            return;
        }

        int x = img.getWidth(this);
        int y = img.getHeight(this);
        int w = 2000 / x;
        int h = 2000 / y;

        for(int i = 0; i < w; i++)
        {
            for(int j = 0; j < h; j++)
            {
                g.drawImage(img, i * x, j * y, this);
            }
        }
    }

    public void update(Graphics g)
    {
        paintComponent(g);
    }

    public void mouseClicked(MouseEvent e)
    {
    }

    public void mousePressed(MouseEvent e)
    {
    }

    public void mouseReleased(MouseEvent e)
    {
    }

    public void mouseEntered(MouseEvent e)
    {
    }

    public void mouseExited(MouseEvent e)
    {
    }

    public boolean imageUpdate(Image image, int infoflags, int x, int y,
                               int width, int height)
    {
        //if(width > 0 && height >0) repaint();
        return true;
    }
}