JavaFX:在拖动时松开未修饰的 window

JavaFX: Loosing undecorated window while dragging it

我有一个未装饰的舞台,我在其中添加了一个包含两个 AnchorPains(一个标题栏和一个 mainContent)的 AnchorPane。为了像正常的 window 一样使用这个 window,我实现了 p.e。用于在两侧调整其大小并将其拖动到标题栏上的功能。为了拖动 window,我分析了 MouseEvents onMouseDragged 和 onMousePressed(参见下面的源代码)。源代码基本上可以正常工作。但是我有一个问题,如果我移动鼠标太快,window 将不会移动。一开始鼠标在标题栏上。在此之后,我将鼠标向一侧移动得太快,以至于它在 window 之外,并且不会再被拖动。一旦我回到标题栏,我就可以再次移动它。有人建议如何解决这个问题吗?是否可以将 window 绑定到鼠标 Cursor?

这是我的源代码:

    titleContent.setOnMousePressed(new EventHandler<MouseEvent>() {
        public void handle(MouseEvent mouseEvent) {
                Stage stage = (Stage) titleContent.getScene().getWindow();
                Screen screen = Screen.getPrimary();
                Rectangle2D bounds = screen.getVisualBounds();

                if (mouseEvent.getClickCount()==1){
                // record a delta distance for the drag and drop operation.
                    if (stage.getWidth()==bounds.getMaxX() && stage.getHeight()==bounds.getMaxY()){
                        wasMaximized =true;
                    }

                    if(!wasMaximized){
                        dragDelta.x = stage.getX() - mouseEvent.getScreenX();
                        dragDelta.y = stage.getY() - mouseEvent.getScreenY();
                    }
                    else{
                        dragDelta.x=-1*minWidth/2;
                        dragDelta.y=0;
                        wasMaximized=false;
                    }
                }
        }
    });

    titleContent.setOnMouseDragged(new EventHandler<MouseEvent>() {
        public void handle(MouseEvent mouseEvent) {
                Scene scene = (Scene) titleContent.getScene();
                if (!(mouseEvent.getX() < border || mouseEvent.getX() > scene.getWidth() -border) && !(mouseEvent.getX() < border && mouseEvent.getY() > scene.getHeight() -border)){
                    Stage stage = (Stage) titleContent.getScene().getWindow();
                    Screen screen = Screen.getPrimary();
                    Rectangle2D bounds = screen.getVisualBounds();


                    if (stage.getWidth()==bounds.getMaxX() && stage.getHeight()==bounds.getMaxY()){
                        stage.setWidth(minWidth);
                        stage.setHeight(minHeight);
                    }

                    stage.setX(mouseEvent.getScreenX() + dragDelta.x);
                    stage.setY(mouseEvent.getScreenY() + dragDelta.y);
                }

    }
  });

我找到了解决办法。对于每个人如何对它感兴趣:问题是 titlecontent.setOnMouseDragged 函数中的 if 语句。如果鼠标在给定元素上被拖拽,该函数就会被调用。这就是为什么没有必要在那里使用 if 语句的原因。正确的函数如下所示:

titleContent.setOnMouseDragged(new EventHandler<MouseEvent>() {
    public void handle(MouseEvent mouseEvent) {
            Scene scene = (Scene) titleContent.getScene();
            if (!(mouseEvent.getX() < border || mouseEvent.getX() > scene.getWidth() -border) && !(mouseEvent.getX() < border && mouseEvent.getY() > scene.getHeight() -border)){
                Stage stage = (Stage) titleContent.getScene().getWindow();
                Screen screen = Screen.getPrimary();
                Rectangle2D bounds = screen.getVisualBounds();


                if (stage.getWidth()==bounds.getMaxX() && stage.getHeight()==bounds.getMaxY()){
                    stage.setWidth(minWidth);
                    stage.setHeight(minHeight);
                }

                stage.setX(mouseEvent.getScreenX() + dragDelta.x);
                stage.setY(mouseEvent.getScreenY() + dragDelta.y);
            }

}

因此,这是一个完整的解决方案,用于拖动未装饰的舞台并调整其大小。希望对您有所帮助。