Afficher image dans un canvas

Version imprimable

18/01/2010, 12h15
kam81

Afficher image dans un canvas

Bonjour,
je recupere une image à partir d'une BD mais je ne sais pas comment faire pour l'afficher dans un canvas dans ma JFrame.
Merci.

Bonjour,

Code:

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import java.awt.*;
import java.awt.image.*;
 
     public class ImageCanvas extends Canvas {
     Image image;
 
         public ImageCanvas(String name) {
         MediaTracker media = new MediaTracker(this);
         image = Toolkit.getDefaultToolkit().getImage(name);
         media.addImage(image, 0);
             try {
             media.waitForID(0); 
         }
         catch (Exception e) {}
     }
 
         public ImageCanvas(ImageProducer imageProducer) {
         image = createImage(imageProducer);
     }
 
         public void paint(Graphics g) {
         g.drawImage(image, 0,0, this);
     }
 
         public static void main(String argv[]) {
             if (argv.length < 1) {
             System.out.println
             ("usage: ImageCanvas.class [image file name]");
             System.exit(0);
         }
         Frame frame = new Frame(argv[0]);
         frame.setLayout(new BorderLayout());
         frame.add("Center", new ImageCanvas(argv[0]));
         frame.resize(400,400);
         frame.show();
     }
}

Code:

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public class ImagePanel extends JComponent {
  public static String IMAGE_PROPERTY = "image";
  private BufferedImage image;
 
  /**
  * {@inheritDoc}
  */
  @Override
  protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    if (image != null) {
      Insets insets = getInsets();
      Dimension size = getSize();
      int width = size.width - (insets.left + insets.right);
      int height = size.height - (insets.top + insets.bottom);
      Graphics2D g2d = (Graphics2D)g.create(insets.left, insets.top, width, height);
      try {
        g2d.drawImage(image, 0, 0, null); // Redimensionner a la bonne taille si besoin.
       }
       finally {
         g2d.dispose();
       }
    }
  }
 
  public BufferedImage getImage() {
    return image;
  }
 
  public void setImage(BufferedImage value) {
    BufferedImage oldValue = image;
    image = value;
    firePropertyChange(IMAGE_PROPERTY, oldValue, value);
  }
}