White box / window flicker upon launch

[Dirk Lemmermann]

Ticket created: ID 9064689

Dirk

> On 23 Apr 2020, at 13:40, Dirk Lemmermann <dlemmermann at gmail.com> wrote:
> 
> I think this is a bug … I will create a ticket for it. When this behaviour was fixed for Swing in Java 6 it made a huge difference in the perception of the quality and performance of Java applications. Could do the same for JavaFX.
> 
> Dirk
> 
> 
>> On 22 Apr 2020, at 20:17, Tom Schindl <tom.schindl at bestsolution.at> wrote:
>> 
>> yes I do but I think this is by nature:
>> 
>> a) you use CSS so only after the first CSS-Pass the color could be set
>>  appropriately, this CSS pass could happen after the Native-Window is
>>  shown
>>  => you can mitigate that a bit using
>>  root.setBackground(new Background(new BackgroundFill(Color.ORANGE,
>>     CornerRadii.EMPTY, Insets.EMPTY)));
>> 
>> b) if the above gives you short flash (IMHO shorter than with CSS) and
>>  you can see that by setting eg RED or GREEN as the Scene-Fill so then
>>  it gets more prominent
>> 
>> So the flash is gone if you put the same color to Scene.setFill() as your root-Pane but now something slightly unexpected happens. The trim is colored slighly in your scene-color ;-)
>> 
>> Tom
>> 
>> Am 22.04.20 um 19:46 schrieb Dirk Lemmermann:
>>> import javafx.application.Application;
>>> import javafx.scene.Scene;
>>> import javafx.scene.layout.VBox;
>>> import javafx.stage.Stage;
>>> public class BugDemo extends Application {
>>>    public void start(Stage stage) {
>>>        VBox root = new VBox();
>>>        root.setStyle("-fx-background-color: orange;");
>>>        Scene scene = new Scene(root, 1000, 800);
>>>        stage.setScene(scene);
>>>        stage.show();
>>>    }
>>>    public static void main(String[] args) {
>>>        launch(args);
>>>    }
>>> }
>