The Java Developers Almanac 1.4


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Home > List of Packages > java.awt  [78 examples] > Drawing  [7 examples]

e578. Setting the Clipping Area with a Shape

This example demonstrates how to set a clipping area using a shape. The example sets an oval for the clipping area and then draws and image. Only those pixels of the image that fall within the oval are displayed.
    // See e575 The Quintessential Drawing Program
    public void paint(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;
    
        // Create an oval shape that's as large as the component
        float fx = 0;
        float fy = 0;
        float fw = getSize().width-1;
        float fh = getSize().height-1;
        Shape shape = new java.awt.geom.Ellipse2D.Float(fx, fy, fw, fh);
    
        // Set the clipping area
        g2d.setClip(shape);
    
        // Draw an image
        int x = 0;
        int y = 0;
        g2d.drawImage(image, x, y, this);
    }

 Related Examples
e575. The Quintessential Drawing Program
e576. Drawing with Alpha
e577. Enabling Antialiasing
e579. Changing the Thickness of the Stroking Pen
e580. Stroking or Filling with a Texture
e581. Animating an Array of Images in an Application

See also: Colors    Components    Containers    Cursors    Events    Focus    Frames    GridBagLayout    Images    Shapes    Simulating Events    Text    The Screen   


© 2002 Addison-Wesley.