Hi Igor, I do not have a full context about Wayland protocol vs X11 legacy faults to understand the reason why the Wayland devs do not support absolute position decided by client applications. Fortunately, I can modify the weston desktop shell to provide that support to my particular use-case with my local build so that I can live with that until an official support from Wayland in the future.
Best regards, Huy On Thu, Jul 13, 2023 at 10:29 PM Igor Korot <ikoro...@gmail.com> wrote: > Hi, > I believe with any Wayland stuff you will fail to use absolute positioning. > > you absolutely have to use X11 and forget about Wayland.. > > The Wayland devs are NOT CONVINCED enough to support absolute > positioning and will just tell you to use X11. > > THank you. > > On Thu, Jul 13, 2023 at 9:55 AM huy nguyen <huykhacnguyen1...@gmail.com> > wrote: > > > > Hi Pekka, > > > > Thank you for your helpful feedback. > > I understand all your points and will take a look to provide a custom > logic to weston desktop to support my use-cases. > > > > Best regards, > > Huy > > > > On Thu, Jul 13, 2023 at 5:07 PM Pekka Paalanen <ppaala...@gmail.com> > wrote: > >> > >> On Wed, 12 Jul 2023 21:38:06 +0700 > >> huy nguyen <huykhacnguyen1...@gmail.com> wrote: > >> > >> > Hi all, > >> > > >> > I have a Linux system based on weston wayland. I run MPV player and > expect > >> > it displays a video window at (0,0) position on the screen (top left > corner > >> > of the display). I already use x11egl backend option to MPV to > support a > >> > fixed position to application but the video window of MPV is > displayed at > >> > an offset (X offset, Y offset) from (0,0) position as shown by the > picture > >> > below: > >> > > >> > [image: IMG_6944.jpg] > >> > > >> > Can we have a support from weston wayland to position (0,0) to > application > >> > running on Xwayland backend? > >> > >> Hi, > >> > >> I think the gap you see is the window decorations. Weston's X11 Window > >> Manager (XWM) and demo clients have a fairly wide margin around window > >> decorations. So the window actually is at (0, 0) already, and the gap > >> is really just the decorations. > >> > >> Maybe you can tell mpv to tell XWM to not decorate the window at all, > >> or maybe you can make the position slightly negative to close the gap. > >> > >> However, if this is a not general use desktop, and kiosk-shell does not > >> fit, the I'm afraid the only reliable way to get exactly the window > >> management behaviour you want overall is to fork and modify Weston's > >> desktop-shell plugin. I mean, maybe you would also like the video > >> window to stay on top regardless of where the user is touching/clicking. > >> > >> Composing an application from multiple independent programs like video > >> players necessarily requires the window manager to be part of the > >> application. As window managers are built into Wayland compositors, you > >> have to change the compositor. In Weston case that happens by loading > >> a different "shell" plugin. > >> > >> Usually if you want an application to embed a video player, you do that > >> with video playing libraries inside the application, and not by adding > >> an external video player which then requires careful window management. > >> > >> > >> Thanks, > >> pq >
