main.fx

一个为 Java/J2EE生成的最简化CAPTCHA的框架

/*
 * Main.fx
 *
 * Created on Jan 4, 2009, 7:11:10 PM
 */

package simplecaptcha;

import nl.captcha.backgrounds.GradiatedBackgroundProducer;
import nl.captcha.Captcha;
import nl.captcha.text.producer.ChineseTextProducer;
import javafx.animation.Interpolator;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.scene.effect.DropShadow;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.paint.Color;
import javafx.scene.paint.RadialGradient;
import javafx.scene.paint.Stop;
import javafx.scene.Scene;
import javafx.scene.shape.Circle;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.scene.text.TextAlignment;
import javafx.scene.transform.Scale;
import javafx.stage.Stage;

/**
 * SimpleCaptcha example using JavaFX
 *
 * @author <a href="[e-mail]">James Childers</a>
 */

def width = 250;
def height = 50;

var scale = 1.0;
var color = Color.YELLOW;
def captcha = new Captcha.Builder(width, height)
    .addText(new ChineseTextProducer())
    .gimp()
    .addNoise()
    .addNoise()
    .addBackground(new GradiatedBackgroundProducer())
    .build();

Timeline {
    repeatCount: Timeline.INDEFINITE
    autoReverse: true
    keyFrames: [
        KeyFrame {
            time: 2.5s
            canSkip: true
            values: [
                scale => -1.0 tween Interpolator.LINEAR
            ]
        }
    ]
}.play();

Stage {
    title: "A CAPTCHA"
    width: width
    height: height + 50 // Add 50 for the answer
    scene: Scene {
        content: [
            Text {
                font: Font {
                    size: 16
                }
                x: 10,
                y: height
                textAlignment: TextAlignment.CENTER
                content: "Answer: {captcha.getAnswer()}"
            }
            ImageView {
                transforms: Scale {
                    x: 1
                    y: bind scale
                    pivotX: 25,
                    pivotY: 25
                }
                image: Image.fromBufferedImage(captcha.getImage())
            }
        ]
    }
}