Hi Giulio >>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.
Can qtwayland "hide" implement the transparent window in desktop shell fullscreen mode? I know it can work in normal mode. Or Does it expects a black screen in fullscreen mode? The app developpers like use this function to swich multi apps. Thank you. Best Regards Nancy 2015-10-08 16:33 GMT+08:00 Giulio Camuffo <giuliocamu...@gmail.com>: > 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 >
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