Ajout de plusieurs images dans un seul Composite

Pour inégalement de la taille des images, l'utilisation d'un texte &/ou "petit icône" moteur de rendu dans un JList, & mettez-les dans le PAGE_START d'un BorderLayout. Ajouter un écouteur, puis afficher l'image sélectionnée dans un JLabel dans un JScrollPane dans le CENTER. Quelque chose comme ceci:

import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.imageio.ImageIO;
public class ImageList {
private JPanel gui;
private JFileChooser fileChooser;
FilenameFilter fileNameFilter;
private JMenuBar menuBar;
DefaultListModel model; 
ImageList() {
gui = new JPanel(new GridLayout());
JPanel imageViewContainer = new JPanel(new GridBagLayout());
final JLabel imageView = new JLabel();
imageViewContainer.add(imageView);
model = new DefaultListModel(); 
final JList imageList = new JList(model);
imageList.setCellRenderer(new IconCellRenderer());
ListSelectionListener listener = new ListSelectionListener() {
@Override
public void valueChanged(ListSelectionEvent lse) {
Object o = imageList.getSelectedValue();
if (o instanceof BufferedImage) {
imageView.setIcon(new ImageIcon((BufferedImage)o));
}
}
};
imageList.addListSelectionListener(listener);
fileChooser = new JFileChooser();
String[] imageTypes = ImageIO.getReaderFileSuffixes();
FileNameExtensionFilter fnf = new FileNameExtensionFilter("Images", imageTypes);
fileChooser.setFileFilter(fnf);
File userHome = new File(System.getProperty("user.home"));
fileChooser.setSelectedFile(userHome);
fileNameFilter = new FilenameFilter() {
@Override 
public boolean accept(File file, String name) {
return true;
}
};
menuBar = new JMenuBar();
JMenu menu = new JMenu("File");
menuBar.add(menu);
JMenuItem browse = new JMenuItem("Browse");
menu.add(browse);
browse.addActionListener(new ActionListener(){
@Override 
public void actionPerformed(ActionEvent ae) {
int result = fileChooser.showOpenDialog(gui);
if (result==JFileChooser.APPROVE_OPTION) {
File eg = fileChooser.getSelectedFile();
//this will be an image, we want the parent directory
File dir = eg.getParentFile();
try {
loadImages(dir);
} catch(Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(
gui, 
e, 
"Load failure!", 
JOptionPane.ERROR_MESSAGE);
}
}
}
});
gui.add(new JSplitPane(
JSplitPane.HORIZONTAL_SPLIT, 
new JScrollPane(
imageList, 
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, 
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER), 
new JScrollPane(imageViewContainer)));
}
public void loadImages(File directory) throws IOException {
File[] imageFiles = directory.listFiles(fileNameFilter);
BufferedImage[] images = new BufferedImage[imageFiles.length];
model.removeAllElements();
for (int ii=0; ii<images.length; ii++) {
model.addElement(ImageIO.read(imageFiles[ii]));
}
}
public Container getGui() {
return gui;
}
public JMenuBar getMenuBar() {
return menuBar;
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable(){
@Override
public void run() {
ImageList imageList = new ImageList();
JFrame f = new JFrame("Image Browser");
f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
f.add(imageList.getGui());
f.setJMenuBar(imageList.getMenuBar());
f.setLocationByPlatform(true);
f.pack();
f.setSize(800,600);
f.setVisible(true);
}
});
}
}
class IconCellRenderer extends DefaultListCellRenderer {
private static final long serialVersionUID = 1L;
private int size;
private BufferedImage icon;
IconCellRenderer() {
this(100);
}
IconCellRenderer(int size) {
this.size = size;
icon = new BufferedImage(size,size,BufferedImage.TYPE_INT_ARGB);
}
@Override
public Component getListCellRendererComponent(
JList list, 
Object value, 
int index, 
boolean isSelected, 
boolean cellHasFocus) {
Component c = super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
if (c instanceof JLabel && value instanceof BufferedImage) {
JLabel l = (JLabel)c;
l.setText("");
BufferedImage i = (BufferedImage)value;
l.setIcon(new ImageIcon(icon));
Graphics2D g = icon.createGraphics();
g.setColor(new Color(0,0,0,0));
g.clearRect(0, 0, size, size);
g.drawImage(i,0,0,size,size,this);
g.dispose();
}
return c;
}
@Override 
public Dimension getPreferredSize() {
return new Dimension(size, size);
}
}

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Si les images sont toutes de la même taille, voir cette réponse. (C'était au-dessus de la réponse avant de la spec. a été précisé. Je l'ai laissé car c'est une jolie capture d'écran.)

OriginalL'auteur Andrew Thompson