ScrollPane vertical value and horizontal value change listener : ScrollPane « JavaFX « Java

1. Java
2. JavaFX
3. ScrollPane

ScrollPane vertical value and horizontal value change listener

 

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.ScrollPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class Main extends Application {
    @Override
    public void start(Stage stage) {
        Group root = new Group();
        Scene scene = new Scene(root, 500, 200);
        stage.setScene(scene);

        Rectangle rect = new Rectangle(200, 200, Color.RED);
        ScrollPane s1 = new ScrollPane();
        s1.setPrefSize(120, 120);
        s1.setContent(rect);

        s1.vvalueProperty().addListener(new ChangeListener<Number>() {
          public void changed(ObservableValue<? extends Number> ov,
              Number old_val, Number new_val) {
                  System.out.println(new_val.intValue());
          }
      });
        s1.hvalueProperty().addListener(new ChangeListener<Number>() {
          public void changed(ObservableValue<? extends Number> ov,
              Number old_val, Number new_val) {
                  System.out.println(new_val.intValue());
          }
      });        
        root.getChildren().add(s1);
        stage.show();
    }
    public static void main(String[] args) {
        launch(args);
    }
}

   
  

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