Wednesday, January 23, 2013

Apply GaussianBlur and BoxBlur on ImageView

This example demonstrate how to apply GaussianBlur and BoxBlur on ImageView.

GaussianBlur and BoxBlur on ImageView
GaussianBlur and BoxBlur on ImageView


package javafx_imageprocessing;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Slider;
import javafx.scene.control.SliderBuilder;
import javafx.scene.control.Tooltip;
import javafx.scene.effect.BoxBlur;
import javafx.scene.effect.GaussianBlur;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

/**
 *
 * @web http://java-buddy.blogspot.com/
 */
public class JavaFX_ImageProcessing extends Application {
    
    ImageView imageView_Source, imageView_GaussianBlur, imageView_BoxBlur;
    Slider sliderWidth, sliderHeight, sliderIterations;
    
    @Override
    public void start(Stage primaryStage) {
        
        Image image = new Image("http://goo.gl/kYEQl");
        imageView_Source = new ImageView();
        imageView_Source.setImage(image);

        imageView_BoxBlur = new ImageView();
        imageView_BoxBlur.setImage(image);
        
        imageView_GaussianBlur = new ImageView();
        imageView_GaussianBlur.setImage(image);
        
        HBox hBoxImage = new HBox();
        hBoxImage.getChildren().addAll(imageView_Source, 
                imageView_GaussianBlur, imageView_BoxBlur);
        
        sliderWidth = SliderBuilder.create()
                .prefWidth(300)
                .min(0.0)   //min
                .max(255.0) //max
                .value(5.0) //default
                .majorTickUnit(50)
                .showTickMarks(true)
                .showTickLabels(true)
                .tooltip(new Tooltip("Width"))
                .build();
        
        sliderHeight = SliderBuilder.create()
                .prefWidth(300)
                .min(0.0)   //min
                .max(255.0) //max
                .value(5.0) //default
                .majorTickUnit(50)
                .showTickMarks(true)
                .showTickLabels(true)
                .tooltip(new Tooltip("Height"))
                .build();
        
        sliderIterations = SliderBuilder.create()
                .prefWidth(300)
                .min(0.0)   //min
                .max(3.0)   //max
                .value(1.0) //default
                .majorTickUnit(1)
                .showTickMarks(true)
                .showTickLabels(true)
                .tooltip(new Tooltip("Iterations"))
                .build();

        Button btnProcess = new Button("Process...");
        btnProcess.setOnAction(btnProcessEventListener);
        
        VBox vBox = new VBox();
        vBox.getChildren().addAll(
                sliderWidth, sliderHeight, sliderIterations, 
                hBoxImage, btnProcess);
        
        StackPane root = new StackPane();
        root.getChildren().add(vBox);
        Scene scene = new Scene(root, 350, 330);
        primaryStage.setTitle("java-buddy.blogspot.com");
        primaryStage.setScene(scene);
        primaryStage.show();
        
        updateEffect();

    }

    public static void main(String[] args) {
        launch(args);
    }
    
    EventHandler<ActionEvent> btnProcessEventListener
    = new EventHandler<ActionEvent>(){

        @Override
        public void handle(ActionEvent t) {
            updateEffect();
        }
    };
    
    private void updateEffect(){
        //Apply GaussianBlur
        GaussianBlur gaussianBlur = new GaussianBlur();
        imageView_GaussianBlur.setEffect(gaussianBlur);
        
        //Apply BoxBlur
        Double valueWidth = sliderWidth.valueProperty().doubleValue(); 
        Double valueHeight = sliderHeight.valueProperty().doubleValue();
        int valueIterations = sliderIterations.valueProperty().intValue();
        BoxBlur boxBlur = new BoxBlur();
        boxBlur.setWidth(valueWidth);
        boxBlur.setHeight(valueHeight);
        boxBlur.setIterations(valueIterations);
        imageView_BoxBlur.setEffect(boxBlur);
    }
}


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