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Java > Open Source Codes > snow > utils > gui > FileChooserImageAccessoryPanel


1 package snow.utils.gui;
2
3 import SnowMailClient.utils.MailMessageUtils;
4 import javax.swing.*;
5 import javax.swing.border.*;
6 import javax.imageio.*;
7 import java.awt.image.*;
8 import java.awt.*;
9 import java.util.*;
10 import java.beans.*;
11
12 /** used to preview images in the filechooser dialog
13 */
14 public class FileChooserImageAccessoryPanel extends JPanel
15 {
16   final private JLabel imageLabel = new JLabel();
17   final private JTextArea imageNameLabel = new JTextArea("",2,30);
18 // final private JLabel imageSizeLabel = new JLabel("");
19
20   public FileChooserImageAccessoryPanel(final JFileChooser fs)
21   {
22      super(new BorderLayout());
23
24      add(imageLabel, BorderLayout.CENTER);
25
26 // add(imageSizeLabel, BorderLayout.SOUTH);
27 add(imageNameLabel, BorderLayout.SOUTH);
28      imageNameLabel.setBackground(imageLabel.getBackground());
29      imageNameLabel.setFont(imageLabel.getFont());
30      imageNameLabel.setEditable(false);
31
32      this.setBorder(new EmptyBorder(4,4,4,4));
33      this.setPreferredSize(new Dimension(200,300));
34      imageLabel.setHorizontalAlignment(JLabel.CENTER);
35      imageLabel.setVerticalAlignment(JLabel.CENTER);
36
37      fs.addPropertyChangeListener(JFileChooser.SELECTED_FILE_CHANGED_PROPERTY,
38        new PropertyChangeListener()
39        {
40           public void propertyChange(PropertyChangeEvent evt)
41           {
42              //System.out.println(fs.getSelectedFile());
43 try
44              {
45                 imageNameLabel.setText("" + fs.getSelectedFile().getName()
46                   + "\nSize: " + MailMessageUtils.formatSize(fs.getSelectedFile().length()));
47
48                 BufferedImage bim = ImageIO.read( fs.getSelectedFile() );
49
50                 imageNameLabel.append("\ndim: "+bim.getWidth() + " x "+bim.getHeight());
51
52                 double redfact = (double) imageLabel.getWidth() / bim.getWidth();
53                 double f2 = (double) imageLabel.getHeight() / bim.getHeight();
54                 if(f2 < redfact) redfact = f2;
55                 if(redfact<1)
56                 {
57                    imageLabel.setIcon(new ImageIcon(bim.getScaledInstance(
58                       (int)(bim.getWidth() *redfact),
59                       (int)(bim.getHeight()*redfact), bim.SCALE_SMOOTH)));
60                 }
61                 else
62                 {
63                    imageLabel.setIcon( new ImageIcon(bim) );
64                 }
65              }
66              catch(Exception JavaDoc e)
67              {
68                 imageLabel.setIcon(null);
69                 //imageSizeLabel.setText("");
70 }
71           }
72        }
73      );
74   } // Constructor
75
76
77   /** test
78   */
79   public static void main(String JavaDoc[] a)
80   {
81      JFileChooser fs = new JFileChooser( "c:/proj" );
82      fs.setAccessory(new FileChooserImageAccessoryPanel(fs)) ;
83      fs.showOpenDialog(null);
84   }
85
86
87 } // FileChooserImageAccessoryPanel
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