<div dir="ltr"><div>Hi Han,<br><br>Allowing yourselves to place multiple windows where you want it then isn't going to solve that problem, since users can still drag them around, minimize them, etc. Multiprocess rendering is a bit tricksy, and there's no standardized way to do it right now. The traditional technique is to build your own Wayland compositor inside your application, which is a bit heavyweight, and then use wl_subsurface to composite the results. This is what e.g. WebKit2's architecture does, and it's something I've tried to implement in the past [0]. As the scope of a Wayland compositor becomes larger and larger over time, I think this is starting to become a bit impractical. It might be worth looking into a multi-process buffer-sharing protocol as a Wayland extension, since it's a use case that keeps coming up.</div><div><br></div><div>[0] <a href="https://github.com/magcius/wakefield">https://github.com/magcius/wakefield</a><br></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jan 3, 2018 at 5:23 AM, Han, Guowei <span dir="ltr"><<a href="mailto:Guowei.Han@johnsonoutdoors.com" target="_blank">Guowei.Han@johnsonoutdoors.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div dir="auto"> <div>We are running a multi process application. And GUI is act as a transparent top layer. All other process rendering by them self underneath. So its important for other process to place the window at right potion.<br> <br> Sent from my iPhone</div><div><div class="gmail-h5"> <div><br> On Jan 3, 2018, at 2:58 AM, Kai-Uwe <<a href="mailto:ku.b-list@gmx.de" target="_blank">ku.b-list@gmx.de</a>> wrote:<br> <br> </div> <blockquote type="cite"> <div> <p>Maybe you are after a full screen application then. With that you should be able to decide about the positioning on the whole output.<br> </p> <div class="gmail-m_-2333435057510124663moz-cite-prefix">Am 03.01.2018 um 02:37 schrieb Han, Guowei:<br> </div> <blockquote type="cite"> <div>Thanks Jasper. Do u know if there's a demo i can learn from? Currently i am creating a bigger surface bigger than screen size. and make subsurface so i can posion them as i want. Really don't think its a good way to do it.<br> <br> Sent from my iPhone</div> <div><br> On Jan 2, 2018, at 4:25 PM, Jasper St. Pierre <<a href="mailto:jstpierre@mecheye.net" target="_blank">jstpierre@mecheye.net</a>> wrote:<br> <br> </div> <blockquote type="cite"> <div>*EXTERNAL EMAIL* <br> <br> <div> <div dir="ltr">Hi Han, <div><br> </div> <div>You cannot position surfaces absolutely using the traditional xdg-shell protocol. However, for embedded cases, there are protocols like ivi-shell which provide that functionality.</div> </div> <div class="gmail_extra"><br> <div class="gmail_quote">On Fri, Dec 29, 2017 at 10:09 AM, Han, Guowei <span dir="ltr"> <<a href="mailto:Guowei.Han@johnsonoutdoors.com" target="_blank">Guowei.Han@johnsonoutdoors.<wbr>com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div lang="EN-US"> <div class="gmail-m_-2333435057510124663m_7416762455441134484WordSection1"> <p class="gmail-MsoNormal">Hi,</p> <p class="gmail-MsoNormal"> </p> <p class="gmail-MsoNormal">Wonder if there’s a way we can position window to anywhere we want using wayland or maybe weston?</p> <p class="gmail-MsoNormal"> </p> <p class="gmail-MsoNormal">Thanks,</p> <p class="gmail-MsoNormal"> </p> </div> The information in this email and any attachments may contain proprietary and confidential information that is intended for the addressee(s) only. 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