ColorPanpublic class ColorPan extends JComponent
| Fields Summary |
|---|
| BufferedImage | image |
| Methods Summary |
|---|
| public void | initialize()
int width = getSize().width;
int height = getSize().height;
int[] data = new int [width * height];
int i = 0;
for (int y = 0; y < height; y++) {
int red = (y * 255) / (height - 1);
for (int x = 0; x < width; x++) {
int green = (x * 255) / (width - 1);
int blue = 128;
data[i++] = (red << 16) | (green << 8 ) | blue;
}
}
image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
image.setRGB(0, 0, width, height, data, 0, width);
| | public static void | main(java.lang.String[] args)
JFrame frame = new JFrame("ColorPan");
frame.getContentPane().add(new ColorPan( ));
frame.setSize(300, 300);
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame.setVisible(true);
| | public void | paint(java.awt.Graphics g)
if (image == null)
initialize();
g.drawImage(image, 0, 0, this);
| | public void | setBounds(int x, int y, int width, int height)
super.setBounds(x,y,width,height);
initialize();
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