Calculate preferred size and set as minimum

[Miroslav Nachev]

For Button this works. For GridPane doesn't works:
        gridPane.applyCss();
        gridPane.layout();
        double width = gridPane.getWidth();
        double height = gridPane.getHeight();
        System.out.println("width=" + width + ", height=" + height);
--- exec-maven-plugin:1.5.0:exec (default-cli) ---
width=0.0, height=0.0


On Thu, Aug 23, 2018 at 6:56 PM Shakir Gusaroff <shakir.gusaroff at gmail.com>
wrote:

> . In javafx 8 you can find the width and height of the node before the
> Stage has been shown. Use applyCss() and layout().
>
>
>
>
>
>
>   @Override
>
>  public void start(Stage stage) throws Exception {
>
>
>
>     Group root = new Group();
>
>     Scene scene = new Scene(root);
>
>
>
>     Button button = new Button("Hello World");
>
>     root.getChildren().add(button);
>
>
>
>     root.applyCss();
>
>     root.layout();
>
>
>
>     double width = button.getWidth();
>
>     double height = button.getHeight();
>
>
>
>     System.out.println(width + ", " + height);
>
>
>
>     stage.setScene(scene);
>
>     stage.show();
>
>  }
>
>
> On Thu, Aug 23, 2018 at 10:35 AM Miroslav Nachev <
> mnachev.nscenter.eu at gmail.com> wrote:
>
>> Hi,
>>
>> Is there any standard way to calculate the preferred size for Scene,
>> Node/Pane and Stage/Window?
>> I want once a form/pane is visualized, it cannot be minimized to a certain
>> size. Since I did not find such a built-in opportunity, at the moment I am
>> doing the following:
>>
>>         Scene scene = new Scene(gridPane);
>>         primaryStage.setScene(scene);
>>         primaryStage.sizeToScene();
>>
>>         primaryStage.show();
>>         primaryStage.setMinWidth(primaryStage.getWidth() + 1);
>>         primaryStage.setMinHeight(primaryStage.getHeight() + 1);
>>         primaryStage.setWidth(640);
>>         primaryStage.setHeight(480);
>>         primaryStage.show();
>>
>> The first call to primaryStage.show() (in orange) I do to calculate the
>> minimum panel size (Scene/GridPane), then set that size as minimum on
>> primaryStage, and finally set the size I want and visualize the panel
>> again.
>>
>> The unpleasant side effect is, that the panel is no longer at the center
>> of
>> the screen.
>>
>> Any ideas?
>>
>>
>> Regards,
>> Miro.
>>
>