java - 跟踪运行时拖动事件的进度。 JavaFX

Question

有没有办法在拖动事件仍在运行时跟踪鼠标位置的值，如果该值是某某，则执行一些代码？

编辑:因为这会让人们感到困惑。我正在寻找一种方法来获取拖动时鼠标位置的实时数据。我所说的实时是指在拖动时找到鼠标的位置，而不是在拖动开始或结束时找到鼠标的位置。

Answer 1

You can use setOnMouseDragged();:

source.setOnMouseDragged(m->{
            System.out.println("MouseScreenX:"+m.getScreenX()+", MouseScreenY:"+m.getScreenY());
            System.out.println("MouseSceneX:"+m.getSceneX()+", MouseSceneY:"+m.getSceneY());

            //Execute some code here(maybe it has to run in a different Thread)
            //....code
            //....
        });

In case you are not comfortable with lambda expressions:

source.setOnMouseDragged(new EventHandler<MouseEvent>() {
            @Override
            public void handle(MouseEvent event) {
                System.out.println("MouseScreenX:" + event.getScreenX() + ", MouseScreenY:" + event.getScreenY());
                System.out.println("MouseSceneX:" + event.getSceneX() + ", MouseSceneY:" + event.getSceneY());

                // Execute some code here(maybe it has to run in a different
                // Thread)
                // ...code
                // ....
            }
        });