DRAG&DROP

package d;

import java.util.List;

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Cursor;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.input.*;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Text;
import javafx.stage.Stage;

/**
 * Demonstrates a drag-and-drop feature.
 */
public class HelloDragAndDrop extends Application {

    @Override public void start(Stage stage) {
        stage.setTitle("Hello Drag And Drop");


        Group root = new Group();
        Scene scene = new Scene(root, 800, 600);
        scene.setFill(Color.LIGHTGREEN);

        final  Image source = new Image("./d/cache.jpg");
        ImageView carte = new ImageView(source);
       final Delta dr = new Delta();
       final Rectangle r = new Rectangle(400, 200,250, 400);
       r.setFill(Color.RED);
        //carte.setScaleX(2.0);
       //carte.setScaleY(2.0);

        carte.setOnMousePressed(new EventHandler<MouseEvent>() {
          @Override public void handle(MouseEvent mouseEvent) {
            // record a delta distance for the drag and drop operation.
           dr.x = carte.getLayoutX() - mouseEvent.getSceneX();
          dr.y = carte.getLayoutY() - mouseEvent.getSceneY();
            carte.setCursor(Cursor.MOVE);
          }
        });

        root.getChildren().add(r);
        root.getChildren().add(carte);

        stage.setScene(scene);
        stage.show();

        carte.setOnMouseReleased(new EventHandler<MouseEvent>() {
            @Override public void handle(MouseEvent mouseEvent) {
                System.out.println(carte.getLayoutX() + ";" + carte.getLayoutY());
                System.out.println(r);

              if((mouseEvent.getSceneX() >= r.getLayoutX()) && (mouseEvent.getSceneX()<= (r.getLayoutX()+r.getWidth())) && (mouseEvent.getSceneY() >= r.getLayoutY()) && (mouseEvent.getSceneY() <= (r.getLayoutY()+r.getHeight())) ){
                    System.out.println("!!!!!?");
              }



            }
          });

          carte.setOnMouseDragged(new EventHandler<MouseEvent>() {
            @Override public void handle(MouseEvent mouseEvent) {
              carte.setLayoutX(mouseEvent.getSceneX() + dr.x);
              carte.setLayoutY(mouseEvent.getSceneY() + dr.y);
            }
          });
    }
 // records relative x and y co-ordinates.
    class Delta { double x, y; }

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