Main.java Source code

Introduction

Here is the source code for Main.java

Source

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.input.TouchEvent;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class Main extends Application {
    int touchId = -1;
    double touchx, touchy;

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

    @Override
    public void start(Stage primaryStage) {
        Group root = new Group();
        Scene scene = new Scene(root, 300, 250);

        final Rectangle rect = new Rectangle();
        rect.setWidth(100);
        rect.setHeight(100);
        root.getChildren().add(rect);

        rect.setOnTouchPressed(new EventHandler<TouchEvent>() {
            @Override
            public void handle(TouchEvent event) {
                if (touchId == -1) {
                    touchId = event.getTouchPoint().getId();
                    touchx = event.getTouchPoint().getSceneX() - rect.getTranslateX();
                    touchy = event.getTouchPoint().getSceneY() - rect.getTranslateY();
                }
                event.consume();
            }
        });

        rect.setOnTouchReleased(new EventHandler<TouchEvent>() {
            @Override
            public void handle(TouchEvent event) {
                if (event.getTouchPoint().getId() == touchId) {
                    touchId = -1;
                }
                event.consume();
            }
        });

        rect.setOnTouchMoved(new EventHandler<TouchEvent>() {
            @Override
            public void handle(TouchEvent event) {
                if (event.getTouchPoint().getId() == touchId) {
                    rect.setTranslateX(event.getTouchPoint().getSceneX() - touchx);
                    rect.setTranslateY(event.getTouchPoint().getSceneY() - touchy);
                }
                event.consume();
            }
        });

        primaryStage.setScene(scene);
        primaryStage.show();
    }
}