package railo.runtime.img;
import java.awt.Color;
import java.awt.Font;
import java.awt.image.BufferedImage;
import railo.commons.img.AbstractCaptcha;
import railo.commons.img.CaptchaException;
import railo.commons.lang.font.FontUtil;
import railo.runtime.exp.ExpressionException;
import railo.runtime.img.filter.MarbleFilter;
public class MarpleCaptcha extends AbstractCaptcha {
public static final int DIFFICULTY_LOW=0;
public static final int DIFFICULTY_MEDIUM=1;
public static final int DIFFICULTY_HIGH=2;
public BufferedImage generate(String text,int width, int height, String[] fonts, boolean useAntiAlias, Color fontColor,int fontSize, int difficulty) throws CaptchaException {
MarbleFilter mf = new MarbleFilter();
try {
mf.setEdgeAction("WRAP");
} catch (ExpressionException e1) {}
mf.setAmount(0.1F);
BufferedImage src=super.generate(text, width, height, fonts, useAntiAlias, fontColor, fontSize, difficulty);
if(difficulty==DIFFICULTY_LOW) mf.setTurbulence(0.0f);
else if(difficulty==DIFFICULTY_MEDIUM) mf.setTurbulence(0.10f);
else mf.setTurbulence(0.2f);
try {
mf.setInterpolation("NEAREST_NEIGHBOUR");
} catch (ExpressionException e) {}
BufferedImage dst = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
mf.filter(src, dst);
return dst;
}
public Font getFont(String font, Font defaultValue) {
return FontUtil.getFont(font,defaultValue);
}
}