How do I detect a mouse click in JavaFX?

Question

So I started playing around with setting up key for different functions in my application and I was wondering is there a way to set the right/left mouse click to do something? I was not able to find any mouse events in the KeyCode.java And I am not sure how to application that.

Here is my code:

public class Exercise_31 extends Application {
 @Override
 public void start(Stage primaryStage) throws Exception {
 PendulumPane pendulumPane = new PendulumPane(500, 500);
 Scene scene = new Scene(pendulumPane);
 primaryStage.setTitle("Pendulum Animation");
 primaryStage.setScene(scene);
 pendulumPane.play();
 primaryStage.show();
 scene.setOnKeyPressed(e-> {
 switch (e.getCode()) {
 case UP: pendulumPane.increase(); break;
 case DOWN: pendulumPane.decrease(); break;
 case LEFTMOUSECLICK? 
 }
 });
 }
 public static void main(String[] args) {
 Application.launch(args);
 }
 private class PendulumPane extends Pane {
 private double w = 400;
 private double h;
 PathTransition bPath;
 Circle topC;
 Circle lowerC;
 Line line;
 Arc arc;
 PendulumPane(double width, double height) {
 w = width;
 h = height;
 setPrefWidth(w);
 setPrefHeight(h);
 arc = new Arc(w / 2, h * 0.8, w * 0.15, w * 0.15, 180, 180);
 arc.setFill(Color.TRANSPARENT);
 arc.setStroke(Color.BLACK);
 lowerC = new Circle(arc.getCenterX() - arc.getRadiusX(), arc.getCenterY(), 10);
 topC = new Circle(arc.getCenterX(), arc.getCenterY() - h / 2, lowerC.getRadius() / 2);
 arc = new Arc(topC.getCenterX(), topC.getCenterY(), w / 2, h / 2, 240, 60);
 line = new Line(
 topC.getCenterX(), topC.getCenterY(),
 lowerC.getCenterX(), lowerC.getCenterY());
 line.endXProperty().bind(lowerC.translateXProperty().add(lowerC.getCenterX()));
 line.endYProperty().bind(lowerC.translateYProperty().add(lowerC.getCenterY()));
 bPath = new PathTransition();
 bPath.setDuration(Duration.millis(4000));
 bPath.setPath(arc);
 bPath.setNode(lowerC);
 bPath.setOrientation(PathTransition.OrientationType.NONE);
 bPath.setCycleCount(PathTransition.INDEFINITE);
 bPath.setAutoReverse(true);
 getChildren().addAll(lowerC, topC,line);
 }
 public void play() {
 bPath.play();
 }
 public void increase() {
 bPath.setRate(bPath.getCurrentRate() + 1);
 }
 public void decrease() {
 bPath.setRate(bPath.getCurrentRate() - 1);
 }
 public void stop() {
 bPath.setRate(bPath.getCurrentRate() * 0);
 }
 public void start() {
 bPath.setRate(bPath.getCurrentRate() + 1);
 }
 }
}

What I am trying to accomplish is to make right clicking your mouse button stop the movement and left clicking start it again. How would I do that? Thank you.

• resueman: The mouse isn't keyboard input. You need to use the setOnMousePressed (or similar) method to capture mouse clicks.
• Blip: Possible duplicate of Java Mouse Event Right Click
• resueman: @Blip that question and its answers are all about Swing though, not JavaFX.

Answer 1

Your event is a KeyEvent. If you define a listener on for the mouse (e.g. setOnMouseReleased you get a MouseEvent and on that one you have functions to check if certain keys are pressed that are usually combined with a mouse click:

event.isAltDown();
event.isControlDown();
event.isMetaDown();

If you need something more you will have to implement it yourself. See the JavaDoc for MouseEvent.