Color.deriveColor() example

Example of setting of hueShift, saturationFactor, brightnessFactor, opacityFactor in Color.deriveColor().

package javafx8image;

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.Slider;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.image.PixelReader;
import javafx.scene.image.PixelWriter;
import javafx.scene.image.WritableImage;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

/**
 *
 * @web http://java-buddy.blogspot.com/
 */
public class JavaFX8Image extends Application {

    Image imageSrc;
    
    Slider sliderHueShift;
    Slider sliderSaturationFactor;
    Slider sliderBrightnessFactor;
    Slider sliderOpacityFactor;
    ImageView imageViewDest;
    
    @Override
    public void start(Stage primaryStage) {
        
        imageSrc = new Image("http://goo.gl/kYEQl");
        
        sliderHueShift = new Slider(0, 360, 0);
        sliderSaturationFactor = new Slider(0, 1, 1);
        sliderBrightnessFactor = new Slider(0, 1, 1);
        sliderOpacityFactor = new Slider(0, 1, 1);
        sliderHueShift.valueProperty().addListener(listener);
        sliderSaturationFactor.valueProperty().addListener(listener);
        sliderBrightnessFactor.valueProperty().addListener(listener);
        sliderOpacityFactor.valueProperty().addListener(listener);

        imageViewDest = new ImageView();

        WritableImage imageDest = copyImage(imageSrc, 
                sliderHueShift.getValue(), 
                sliderSaturationFactor.getValue(), 
                sliderBrightnessFactor.getValue(), 
                sliderOpacityFactor.getValue());
        imageViewDest.setImage(imageDest);

        VBox vBox = new VBox();
        vBox.getChildren().addAll(
                new Label("hueShift"),
                sliderHueShift, 
                new Label("saturationFactor"),
                sliderSaturationFactor, 
                new Label("brightnessFactor"),
                sliderBrightnessFactor, 
                new Label("opacityFactor"),
                sliderOpacityFactor, 
                imageViewDest);

        StackPane root = new StackPane();
        root.getChildren().addAll(vBox);

        Scene scene = new Scene(root, 640, 360);

        primaryStage.setTitle("java-buddy.blogspot.com");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
    
    ChangeListener<Number> listener = new ChangeListener<Number>(){

        @Override
        public void changed(ObservableValue<? extends Number> observable, 
                Number oldValue, Number newValue) {
            WritableImage imageDest = copyImage(imageSrc, 
                sliderHueShift.getValue(), 
                sliderSaturationFactor.getValue(), 
                sliderBrightnessFactor.getValue(), 
                sliderOpacityFactor.getValue());
        imageViewDest.setImage(imageDest);
        }
    };

    private WritableImage copyImage(
            Image src, 
            double hueShift, 
            double saturationFactor, 
            double brightnessFactor,
            double opacityFactor) {

        PixelReader pixelReader = src.getPixelReader();
        WritableImage dest
                = new WritableImage(
                        (int) src.getWidth(),
                        (int) src.getHeight());
        PixelWriter pixelWriter = dest.getPixelWriter();

        for (int y = 0; y < src.getHeight(); y++) {
            for (int x = 0; x < src.getWidth(); x++) {
                Color color = pixelReader.getColor(x, y);

                color = color.deriveColor(
                        hueShift,
                        saturationFactor,
                        brightnessFactor,
                        opacityFactor);
                        
                pixelWriter.setColor(x, y, color);
            }
        }

        return dest;
    }

}