gimpycontroller.groovy

一个为 Java/J2EE生成的最简化CAPTCHA的框架

import java.awt.Color

import nl.captcha.Captcha
import nl.captcha.backgrounds.*
import nl.captcha.gimpy.*
import nl.captcha.servlet.CaptchaServletUtil

/**
* Exercise the different gimpy renderers.
*
**/

class GimpyController {
    def final WIDTH = 200
    def final HEIGHT = 50

    def simple = {
        def captcha = new Captcha.Builder(WIDTH, HEIGHT)
            .addText()
            .gimp()
            .build()
        CaptchaServletUtil.writeImage(response, captcha.image)
    }

    def fisheye = {
        def captcha = new Captcha.Builder(WIDTH, HEIGHT)
            .addText()
            .gimp(new FishEyeGimpyRenderer(Color.RED, Color.BLUE))
            .build()
        CaptchaServletUtil.writeImage(response, captcha.image)
    }

    def ripple = {
        def captcha = new Captcha.Builder(WIDTH, HEIGHT)
            .addText()
            .gimp(new RippleGimpyRenderer())
            .build()
        CaptchaServletUtil.writeImage(response, captcha.image)
    }

    def shear = {
        def captcha = new Captcha.Builder(WIDTH, HEIGHT)
            .addText()
            .gimp(new ShearGimpyRenderer())
            .build()
        CaptchaServletUtil.writeImage(response, captcha.image)
    }

    def shadow = {
        def captcha = new Captcha.Builder(WIDTH, HEIGHT)
            .addText()
            .gimp(new DropShadowGimpyRenderer())
            .build()
        CaptchaServletUtil.writeImage(response, captcha.image)
    }

    def block = {
        def captcha = new Captcha.Builder(WIDTH, HEIGHT)
            .addText()
            .gimp(new BlockGimpyRenderer())
            .build()
        CaptchaServletUtil.writeImage(response, captcha.image)
    }

    def blockbig = {
        def captcha = new Captcha.Builder(WIDTH, HEIGHT)
            .addText()
            .gimp(new BlockGimpyRenderer(5))
            .build()
        CaptchaServletUtil.writeImage(response, captcha.image)
    }

    def multi = {
        def captcha = new Captcha.Builder(WIDTH, HEIGHT)
            .addText()
            .gimp(new BlockGimpyRenderer())
            .gimp(new DropShadowGimpyRenderer())
            .gimp(new RippleGimpyRenderer())
            .gimp(new FishEyeGimpyRenderer())
            .addBackground(new GradiatedBackgroundProducer())
            .addBorder()
            .build()
        CaptchaServletUtil.writeImage(response, captcha.image)
    }
}