2015-10-08 9:59 GMT+03:00 Pekka Paalanen <ppaala...@gmail.com>: > On Thu, 8 Oct 2015 11:12:42 +0800 > zou lan <nancy.lan....@gmail.com> wrote: > >> >>If a client really wants to use the transparency, and does not want >> opaque black bars, it can be the client's responsibility to produce a >> buffer that can fill the screen. >> >> This is what the client wants to. The Qt app call "hide" function just >> wants to implement a function like minimize the window. But there is no >> minimize in fullscreen mode. I think maybe the qtwayland >> can implement the "hide" to make the window really transparent , not a >> black screen now. > > Hi, > > "hide" should be implemented by destroying the wl_surface and/or the > xdg_surface, in case committing a NULL wl_buffer is not allowed by the > xdg_shell spec. > > "Minimizing" is a very different operation, you would use > xdg_surface.set_minimized for that, and I don't think being fullscreen > prevents that in any way. > > Both of those do what you want: make the window disappear. > > Making a window completely transparent though is not something you > should try to do, and it won't make a fullscreen window disappear > guaranteed. > > So, my question stands: what does Qt do in Wayland terms for "hide"? > Is it using wl_shell or xdg_shell protocol?
qtwayland uses wl_shell unless the user explicitly enables xdg_shell, and right now hide() attachs a NULL buffer. Even in the xdg_shell case, so that's broken. -- Giulio > > > Thanks, > pq _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/wayland-devel
