Resizing stage while it is maximized breaks scene size on Linux

[Thiago Milczarek Sayão]

The documentation states:

"If this Window is an instance of Stage, changing this attribute will not
visually affect the Window while fullScreen is true, but will be honored by
the Window once fullScreen becomes false."

Maybe it should also be the case for maximized state.



Em sáb., 29 de mar. de 2025 às 09:52, Christopher Schnick <
crschnick at xpipe.io> escreveu:

> Thanks, yeah I did not submit an issue there because I don't like the bug
> report website form. But that is another story.
>
> I looked at the PR, seems to be pretty straightforward. Thinking about
> this, I have not tested how it behaves with the fullscreen property instead
> of the maximized property as I rarely use that. Maybe that also needs to be
> covered.
> On 29/03/2025 13:24, Thiago Milczarek Sayão wrote:
>
> I did not find a bug report, so I did one and provided a fix:
>
> https://github.com/openjdk/jfx/pull/1748
>
>
>
> Em sáb., 29 de mar. de 2025 às 08:26, Thiago Milczarek Sayão <
> thiago.sayao at gmail.com> escreveu:
>
>> @Christopher Schnick <crschnick at xpipe.io>
>>
>> Hi, did you open a bug? I have a fix for this.
>>
>> Thanks
>>
>> -- Thiago.
>>
>> Em seg., 17 de mar. de 2025 às 09:49, Christopher Schnick <
>> crschnick at xpipe.io> escreveu:
>>
>>> So on Windows at least, it will change the width temporarily and then
>>> revert back to the original width value. So you will receive two width
>>> change events if you listen to the stage width property. The maximized
>>> property is not changed.
>>>
>>> I guess this also not optimal handling of this. Ideally, no changes
>>> would be made in that case.
>>> On 17/03/2025 10:53, Thiago Milczarek Sayão wrote:
>>>
>>> Hi Christopher,
>>>
>>> It seems like a simple fix.
>>>
>>> How does it behave on other platforms? Does it ignore the resize,
>>> restore the window to its unmaximized state before resizing, or keep it
>>> maximized while adjusting the unmaximized size.
>>>
>>> -- Thiago
>>>
>>>
>>>
>>>
>>>
>>>
>>> Em dom., 16 de mar. de 2025 às 05:25, Christopher Schnick <
>>> crschnick at xpipe.io> escreveu:
>>>
>>>> Hello,
>>>>
>>>> we encountered an issue on Linux where resizing the stage while it is
>>>> maximized breaks the size of the scene. You can see a video of this at
>>>> https://github.com/xpipe-io/xpipe/issues/485 . The root cause is that
>>>> the stage size is modified.
>>>>
>>>> When doing this, it temporarily or permanently switches to the size the
>>>> stage had prior to being maximized, leading to either a flicker or a
>>>> permanently broken scene that has the wrong size. This happens on Gnome and
>>>> KDE for me with the latest JavaFX ea version.
>>>>
>>>> Here is a simple reproducer:
>>>>
>>>> import javafx.application.Application;import javafx.scene.Scene;import javafx.scene.control.Button;import javafx.scene.layout.Region;import javafx.scene.layout.StackPane;import javafx.stage.Stage;
>>>> import java.io.IOException;import java.util.Base64;
>>>> public class MaximizeLinuxBug extends Application {
>>>>
>>>>     @Override    public void start(Stage stage) throws IOException {
>>>>         Scene scene = new Scene(createContent(), 640, 480);
>>>>         var s = "data:text/css;base64," + Base64.getEncoder().encodeToString(createCss().getBytes());
>>>>         scene.getStylesheets().add(s);
>>>>         stage.setTitle("Hello!");
>>>>         stage.setScene(scene);
>>>>         stage.show();
>>>>         stage.centerOnScreen();
>>>>         stage.setMaximized(true);
>>>>     }
>>>>
>>>>     private String createCss() {
>>>>         return """                * {                -fx-border-color: red;                -fx-border-width: 1;                }                """;
>>>>     }
>>>>
>>>>     private Region createContent() {
>>>>         var button = new Button("Click me!");
>>>>         button.setOnAction(event -> {
>>>>             var w = button.getScene().getWindow();
>>>>             w.setWidth(w.getWidth() - 1);
>>>>             event.consume();
>>>>         });
>>>>         var stack = new StackPane(button);
>>>>         return stack;
>>>>     }
>>>>
>>>>     public static void main(String[] args) {
>>>>         launch();
>>>>     }
>>>> }
>>>>
>>>>
>>>> Best
>>>> Christopher Schnick
>>>>
>>>
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