Rendering window thumbnails etc

[adlo]

> On 22 May 2019, at 21:36, Ilia Bozhinov <ammen99 at gmail.com> wrote:
> 
> If you have a panel/any UI elements, then you most probably have a protocol to communicate that the UI element surface is a special surface. You could then just extend this protocol so that you specify Z-ordering of these surfaces, and then the compositor should respect that.
> 

With such a protocol, how would I create a window using GTK and then tell the compositor that it's a special surface? Client-side, I may have access to the GtkWindow's wl_surface, I think, whereas server-side I have objects such as weston_surface, weston_desktop_surface. How are these two connected?

Regards

adlo