UI Control Sample | JavaFX Tutorials and Documentation

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/*
 * Copyright (c) 2011, 2013 Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 *
 * This file is available and licensed under the following license:
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 * modification, are permitted provided that the following conditions
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 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
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 * notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the distribution.
 * - Neither the name of Oracle nor the names of its
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 * from this software without specific prior written permission.
 *
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package slidersample;
import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.Slider;
import javafx.scene.effect.SepiaTone;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class SliderSample extends Application {
 final Slider opacityLevel = new Slider(0, 1, 1); 
 final Slider sepiaTone = new Slider(0, 1, 1);
 final Slider scaling = new Slider (0.5, 1, 1);
 final Image image = new Image(getClass().getResourceAsStream(
 "cappuccino.jpg")
 );
 final Label opacityCaption = new Label("Opacity Level:");
 final Label sepiaCaption = new Label("Sepia Tone:");
 final Label scalingCaption = new Label("Scaling Factor:");
 final Label opacityValue = new Label(
 Double.toString(opacityLevel.getValue()));
 final Label sepiaValue = new Label(
 Double.toString(sepiaTone.getValue()));
 final Label scalingValue = new Label(
 Double.toString(scaling.getValue()));
 final static Color textColor = Color.WHITE;
 final static SepiaTone sepiaEffect = new SepiaTone();
 @Override
 public void start(Stage stage) {
 Group root = new Group();
 Scene scene = new Scene(root, 600, 400);
 stage.setScene(scene);
 stage.setTitle("Slider Sample");
 scene.setFill(Color.BLACK);
 GridPane grid = new GridPane();
 grid.setPadding(new Insets(10, 10, 10, 10));
 grid.setVgap(10);
 grid.setHgap(70);
 final ImageView cappuccino = new ImageView (image);
 cappuccino.setEffect(sepiaEffect);
 GridPane.setConstraints(cappuccino, 0, 0);
 GridPane.setColumnSpan(cappuccino, 3);
 grid.getChildren().add(cappuccino);
 scene.setRoot(grid);
 opacityCaption.setTextFill(textColor);
 GridPane.setConstraints(opacityCaption, 0, 1);
 grid.getChildren().add(opacityCaption);
 
 opacityLevel.valueProperty().addListener(new ChangeListener<Number>() {
 public void changed(ObservableValue<? extends Number> ov,
 Number old_val, Number new_val) {
 cappuccino.setOpacity(new_val.doubleValue());
 opacityValue.setText(String.format("%.2f", new_val));
 }
 });
 GridPane.setConstraints(opacityLevel, 1, 1);
 grid.getChildren().add(opacityLevel);
 opacityValue.setTextFill(textColor);
 GridPane.setConstraints(opacityValue, 2, 1);
 grid.getChildren().add(opacityValue);
 sepiaCaption.setTextFill(textColor);
 GridPane.setConstraints(sepiaCaption, 0, 2);
 grid.getChildren().add(sepiaCaption);
 sepiaTone.valueProperty().addListener(new ChangeListener<Number>() {
 public void changed(ObservableValue<? extends Number> ov,
 Number old_val, Number new_val) {
 sepiaEffect.setLevel(new_val.doubleValue());
 sepiaValue.setText(String.format("%.2f", new_val));
 }
 });
 GridPane.setConstraints(sepiaTone, 1, 2);
 grid.getChildren().add(sepiaTone);
 sepiaValue.setTextFill(textColor);
 GridPane.setConstraints(sepiaValue, 2, 2);
 grid.getChildren().add(sepiaValue);
 scalingCaption.setTextFill(textColor);
 GridPane.setConstraints(scalingCaption, 0, 3);
 grid.getChildren().add(scalingCaption);
 scaling.valueProperty().addListener(new ChangeListener<Number>() {
 public void changed(ObservableValue<? extends Number> ov,
 Number old_val, Number new_val) {
 cappuccino.setScaleX(new_val.doubleValue());
 cappuccino.setScaleY(new_val.doubleValue());
 scalingValue.setText(String.format("%.2f", new_val));
 }
 });
 GridPane.setConstraints(scaling, 1, 3);
 grid.getChildren().add(scaling);
 scalingValue.setTextFill(textColor);
 GridPane.setConstraints(scalingValue, 2, 3);
 grid.getChildren().add(scalingValue);
 stage.show();
 }
 public static void main(String[] args) {
 launch(args);
 }
}