How to use

prepareImage

method

in

org.deegree.style.utils.ImageUtils

@Override
public void serializeException( HttpResponseBuffer response, OWSException ex,
                XMLExceptionSerializer exceptionSerializer, Map<String, String> map )
            throws SerializingException {
  int width = Integer.parseInt( map.get( "WIDTH" ) );
  int height = Integer.parseInt( map.get( "HEIGHT" ) );
  boolean transparent = map.get( "TRANSPARENT" ) != null && map.get( "TRANSPARENT" ).equalsIgnoreCase( "true" );
  String format = map.get( "FORMAT" );
  Color color = map.get( "BGCOLOR" ) == null ? white : decode( map.get( "BGCOLOR" ) );
  BufferedImage img = prepareImage( format, width, height, transparent, color );
  try {
    controller.sendImage( img, response, format );
  } catch ( OWSException e ) {
    throw new SerializingException( e );
  } catch ( IOException e ) {
    throw new SerializingException( e );
  }
}

Color color = map.get( "BGCOLOR" ) == null ? white : decode( map.get( "BGCOLOR" ) );
BufferedImage img = prepareImage( format, width, height, transparent, color );
Graphics2D g = img.createGraphics();
g.setColor( black );

/**
 * @param req
 *            should be a GetMap or GetLegendGraphic
 * @return an empty image conforming to the request parameters
 */
public static BufferedImage prepareImage( Object req ) {
  String format = null;
  int width = 0, height = 0;
  Color bgcolor = null;
  boolean transparent = false;
  if ( req instanceof GetLegendGraphic ) {
    GetLegendGraphic glg = (GetLegendGraphic) req;
    format = glg.getFormat();
    width = glg.getWidth();
    height = glg.getHeight();
    transparent = true;
  } else {
    return null;
  }
  return ImageUtils.prepareImage( format, width, height, transparent, bgcolor );
}

public static RenderContext createInstance( RenderingInfo info, OutputStream outputStream ) {
  BufferedImage image = ImageUtils.prepareImage( info.getFormat(), info.getWidth(), info.getHeight(), info.getTransparent(),
                              info.getBgColor() );
  
  return createInstance( info, image, outputStream);
}