imageviewer.java

来自「java ftp 操作代码,程序可以直接运行」· Java 代码 · 共 103 行

/*
 * 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.tasks;

import net.sf.jftp.config.Settings;
import net.sf.jftp.gui.*;
import net.sf.jftp.gui.framework.*;
import net.sf.jftp.util.*;

import java.awt.*;

import java.io.*;

import java.net.*;

import java.util.*;

import javax.swing.*;


public class ImageViewer extends JInternalFrame
{
    public ImageViewer(String img)
    {
        super(img, true, true, true, true);
        setLocation(150, 50);
        setSize(400, 300);

        setLayout(new BorderLayout(2, 2));

        ImagePanel p = new ImagePanel(img);
        JScrollPane scroll = new JScrollPane(p);

        getContentPane().add("Center", scroll);

        p.setMinimumSize(new Dimension(1500, 1500));
        p.setPreferredSize(new Dimension(1500, 1500));
        p.setMaximumSize(new Dimension(1500, 1500));

        setVisible(true);

        //doLayout();
        //validate();
        //p.repaint();
        //Log.out(""+p.getSize().width);
    }
}


class ImagePanel extends JPanel
{
    private Image img;

    public ImagePanel(String url)
    {
        try
        {
            setBackground(Color.white);

            img = Toolkit.getDefaultToolkit().getImage(new URL(url));

            MediaTracker mt = new MediaTracker(this);
            mt.addImage(img, 1);
            mt.waitForAll();

            //System.out.println(img);
            //setVisible(true);
            repaint();

            //validate();
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
        }
    }

    public void paintComponent(Graphics g)
    {
        g.setColor(Color.white);
        g.fillRect(0, 0, 1500, 1500);
        g.drawImage(img, 0, 0, null);
    }

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