/*
* Create a BufferedImage for Swing components.
* All or part of the component can be captured to an image.
*
* @param component Swing component to create image from
* @param region The region of the component to be captured to an image
* @param fileName name of file to be created or null
* @return image the image for the given region
* @exception IOException if an error occurs during writing
*/
public static BufferedImage createImage(JComponent component, Rectangle region, String fileName)
throws IOException {
boolean opaqueValue = component.isOpaque();
component.setOpaque(true);
BufferedImage image =
new BufferedImage(region.width, region.height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = image.createGraphics();
g2d.setClip(region);
component.paint(g2d);
g2d.dispose();
component.setOpaque(opaqueValue);
ScreenCapture.writeImage(image, fileName);
return image;
}
/**
* Create a BufferedImage from a rectangular region on the screen.
*
* @param region region on the screen to create image from
* @param fileName name of file to be created or null
* @return image the image for the given region
* @exception AWTException see Robot class constructors
* @exception IOException if an error occurs during writing
*/
public static BufferedImage createImage(Rectangle region, String fileName)
throws AWTException, IOException {
BufferedImage image = new Robot().createScreenCapture(region);
ScreenCapture.writeImage(image, fileName);
return image;
}