Sets the #DzlApplicationWindow into either the fullscreen or unfullscreen state based on @fullscreen.
The titlebar for the window is contained within a #GtkRevealer which is repurposed as a floating bar when the application is in fullscreen mode.
See dzl_application_window_get_fullscreen() to get the current fullscreen state.
if the window should be in the fullscreen state
3.26
See Implementation
Sets the #DzlApplicationWindow into either the fullscreen or unfullscreen state based on @fullscreen.
The titlebar for the window is contained within a #GtkRevealer which is repurposed as a floating bar when the application is in fullscreen mode.
See dzl_application_window_get_fullscreen() to get the current fullscreen state.