ImageDuplicitypublic class ImageDuplicity extends Component
| Fields Summary |
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| private BufferedImage | mImage |
| Methods Summary |
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| private void | createOffscreenImage()
// Create a BufferedImage the same size as this component.
Dimension d = getSize();
int w = d.width, h = d.height;
mImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
// Obtain the Graphics2D for the offscreen image.
Graphics2D g2 = mImage.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
// Load an image from a file.
try {
String filename = "Raphael.jpg";
InputStream in = getClass().getResourceAsStream(filename);
JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);
BufferedImage image = decoder.decodeAsBufferedImage();
in.close();
// Draw the loaded image on the offscreen image.
g2.drawImage(image, 0, 0, w, h, null);
}
catch (Exception e) { System.out.print(e); }
// Draw some concentric ellipses.
g2.setStroke(new BasicStroke(2));
Color[] colors = { Color.red, Color.blue, Color.green };
for (int i = -32; i < 40; i += 8) {
g2.setPaint(colors[Math.abs(i) % 3]);
g2.drawOval(i, i, w - i * 2, h - i * 2);
}
| | public static void | main(java.lang.String[] args)
ApplicationFrame f = new ApplicationFrame("ImageDuplicity v1.0");
f.setLayout(new BorderLayout());
Component c = new ImageDuplicity();
f.add(c, BorderLayout.CENTER);
f.setSize(200, 250);
f.center();
f.setVisible(true);
| | public void | paint(java.awt.Graphics g)
Graphics2D g2 = (Graphics2D)g;
// If the offscreen image is not defined, create it.
if (mImage == null) createOffscreenImage();
// Render the offscreen image.
g2.drawImage(mImage, 0, 0, this);
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