Wednesday, September 18, 2013

JavaFX BoxBlur effect

javafx.scene.effect.BoxBlur using a simple box filter kernel, with separately configurable sizes in both dimensions. And also an iteration parameter that controls the quality of the resulting blur.

BoxBlur effect
BoxBlur effect

package javafx_boxblur;

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.control.SliderBuilder;
import javafx.scene.control.Tooltip;
import javafx.scene.effect.BoxBlur;
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_BoxBlur extends Application {

@Override
public void start(Stage primaryStage) {
Image image = new Image("http://goo.gl/kYEQl");
ImageView imageView = new ImageView();
imageView.setImage(image);
Label label = new Label("Java-buddy");
HBox hBox = new HBox();
hBox.getChildren().addAll(imageView, label);

final BoxBlur boxBlur = new BoxBlur();
hBox.setEffect(boxBlur);

Slider sliderWidth = SliderBuilder.create()
.layoutX(50)
.layoutY(50)
.prefWidth(400)
.min(0)
.max(255)
.majorTickUnit(20)
.minorTickCount(3)
.showTickMarks(true)
.showTickLabels(true)
.value(5)
.tooltip(new Tooltip("BoxBlur.width"))
.build();
sliderWidth.valueProperty().addListener(new ChangeListener<Number>() {

@Override
public void changed(ObservableValue<? extends Number> ov,
Number t, Number t1) {
boxBlur.setWidth(t1.doubleValue());
}
});

Slider sliderHeight = SliderBuilder.create()
.layoutX(50)
.layoutY(50)
.prefWidth(400)
.min(0)
.max(255)
.majorTickUnit(20)
.minorTickCount(3)
.showTickMarks(true)
.showTickLabels(true)
.value(5)
.tooltip(new Tooltip("BoxBlur.height"))
.build();
sliderHeight.valueProperty().addListener(new ChangeListener<Number>() {

@Override
public void changed(ObservableValue<? extends Number> ov,
Number t, Number t1) {
boxBlur.setHeight(t1.doubleValue());
}
});

VBox vBox = new VBox();
vBox.getChildren().addAll(hBox, sliderWidth, sliderHeight);

StackPane root = new StackPane();
root.getChildren().add(vBox);
Scene scene = new Scene(root, 300, 300);
primaryStage.setTitle("java-buddy.blogspot.com");
primaryStage.setScene(scene);
primaryStage.show();
}

public static void main(String[] args) {
launch(args);
}
}

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