RFR: Draft: 8316423: [linux] Secondary Stage does not respect Scene's dimensions when shown [v7]

[Thiago Milczarek Sayao]

On Sun, 15 Oct 2023 13:25:15 GMT, Thiago Milczarek Sayao <tsayao at openjdk.org> wrote:

>> The bug on the title happens because `gtk_widget_realize()` was called on the constructor. It creates the internal underlying window  `GdkWindow` and `XWindow` messing the Gtk expected order. It actually it's probably a Mutter change rather than Gtk. But makes sense to not realize it before expected on the gtk/mutter flow.
>> 
>> I moved the code to get the `GdkWindow` to the realize event.
>> 
>> Had to change the background function because it's called before realize.
>> 
>> The initial **Maximized** and **FullScreen** situations are probably a bug on Mutter [filed here](https://gitlab.gnome.org/GNOME/mutter/-/issues/3092).
>> 
>> I could work-around it on this situation, but it would still happen on later focus request.
>> 
>> 
>> This also fixes [JDK-8316425](https://bugs.openjdk.org/browse/JDK-8316425)
>
> Thiago Milczarek Sayao has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix background

This pure gtk program also reports:


Window is now iconified (minimized).
Window is now de-iconified (unminimized).
Window is now iconified (minimized).





#include <gtk/gtk.h>

// Callback function for handling window state changes
void on_window_state_event(GtkWidget *window, GdkEventWindowState *event, gpointer user_data) {
    if (event->changed_mask & GDK_WINDOW_STATE_ICONIFIED) {
        if (event->new_window_state & GDK_WINDOW_STATE_ICONIFIED) {
            g_print("Window is now iconified (minimized).\n");
        } else {
            g_print("Window is now de-iconified (unminimized).\n");
        }
    }
}

int main(int argc, char *argv[]) {
    GtkWidget *window;

    gtk_init(&argc, &argv);

    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "Iconified Window");
    gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
    g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);

    // Connect the callback to the window state event
    g_signal_connect(G_OBJECT(window), "window-state-event", G_CALLBACK(on_window_state_event), NULL);

    // Start the window iconified (minimized)
    gtk_window_iconify(GTK_WINDOW(window));

    gtk_widget_show_all(window);

    gtk_main();

    return 0;
}



`gcc -o testiconified testiconified.c $(pkg-config --cflags --libs gtk+-3.0)`

I would guess it's some X11 requirement to get window properties or something like that.

-------------

PR Comment: https://git.openjdk.org/jfx/pull/1249#issuecomment-1778166223