<div dir="ltr">Note that ivi-shell is designed for embedded systems, and won't be implemented by traditional desktop systems. It depends on the type of application you're writing. If you want to write a traditional desktop application, ivi-shell isn't for you. </div><div class="gmail_extra"> <div class="gmail_quote">On Thu, Sep 25, 2014 at 1:32 AM, Ucan, Emre (ADITG/SW1) <<a href="mailto:eucan@de.adit-jv.com" target="_blank">eucan@de.adit-jv.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div link="blue" vlink="purple" lang="EN-US"> <div> Hi, you can do it with weston-ivi-shell. IVI-Shell introduces layer concept to weston. A layer is a group of surfaces which can be moved or resized together. But IVI-Shell is just an interface and you have to implement your own APIs to use it. Wayland-IVI-Extension is a set of readily implemented APIs which are using weston-ivi-shell. Some example APIs: ilm_layerSetPosition “Sets the horizontal and vertical position of the layer. Relative position of layer’s surfaces would be maintained.” ilm_layerSetDestinationRectangle “Set the destination area on the display for a layer. The layer will be scaled and positioned to this rectangle for rendering.” ilm_layerSetVisibility “Sets the visibility for all surfaces of a layer” ilm_layerSetVisibility “Sets the opacity for all surfaces of a layer” You can get more information from the website: <a href="http://projects.genivi.org/wayland-ivi-extension/home" target="_blank">http://projects.genivi.org/wayland-ivi-extension/home</a> If you are interested I can help you to install & use it. Best regards Emre Ucan Software Group I (ADITG/SW1) Tel. <a href="tel:%2B49%205121%2049%206937" value="+495121496937" target="_blank">+49 5121 49 6937</a> <div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm"> From: wayland-devel [mailto:<a href="mailto:wayland-devel-bounces@lists.freedesktop.org" target="_blank">wayland-devel-bounces@lists.freedesktop.org</a>] On Behalf Of Hongze Zhao Sent: Donnerstag, 25. September 2014 03:49 To: Jasper St. Pierre Cc: wayland mailing list Subject: Re: How to maintain relative position of two surfaces? </div><div><div class="h5"> <div> I am not familiar with subsurfaces as I am new to weston. I will look at it and see how it works. <div> </div> <div> Thanks, </div> <div> Hongze </div> </div> <div> <div> On Wed, Sep 24, 2014 at 8:45 PM, Jasper St. Pierre <<a href="mailto:jstpierre@mecheye.net" target="_blank">jstpierre@mecheye.net</a>> wrote: <div> This sounds like you want to use subsurfaces, then. Any reason you can't just draw the child surface on top of the father surface, though? </div> <div> <div> <div> <div> On Wed, Sep 24, 2014 at 6:16 PM, Hongze Zhao <<a href="mailto:zhaohongze@gmail.com" target="_blank">zhaohongze@gmail.com</a>> wrote: <div> Hi Jasper, <div> </div> <div> Thanks for reply. </div> <div> </div> <div> Here is my use case. </div> <div> <img src="cid:image001.png@01CFD8A0.CF723890" border="0" height="279" width="562"> </div> <div> Suppose we have a client called "father", who has a larger surface called "father surface" and a client called "child", whose smaller surface is "child surface". The child surface should be displayed in a given relative position above father surface and maintain their relative position. When I move father surface, the child surface will be moved together. But the child surface cannot be moved. Thus the child surface will looks like a part of father surface. I just need it works in the simplest scenario. I assume the two surfaces is in the same workspace, both surfaces cannot be resized, maximized or fullscreened. The two clients and compositor should work together to achieve this goal. </div> <div> </div> <div> I know this is a weird use case. I am just wondering if there is some natural or easy way to implement this functionality. Or I have to do a lot of modifications. </div> <div> </div> <div> Thanks, </div> <div> Hongze </div> <div> </div> </div> <div> <div> <div> <div> On Wed, Sep 24, 2014 at 7:54 PM, Jasper St. Pierre <<a href="mailto:jstpierre@mecheye.net" target="_blank">jstpierre@mecheye.net</a>> wrote: <div> <div> The only way to position surfaces relatively one to another is by using a subsurface. But I imagine this isn't exactly what you want. </div> Can you explain a bit more about your use case? What happens if I put one surface on a different workspace from the others? Should the two be stacked independently (e.g. your window A, my terminal, your window B)? What happens when I resize the surfaces? Or maximize or fullscreen them? </div> <div> <div> <div> <div> On Wed, Sep 24, 2014 at 5:49 PM, Hongze Zhao <<a href="mailto:zhaohongze@gmail.com" target="_blank">zhaohongze@gmail.com</a>> wrote: </div> </div> <blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"> <div> <div> <div> <div> <div> Hi All, </div> <div> </div> <div> I am doing some experiments on weston compositor. I am wondering if someone could give me some hints about how to maintain relative position of two surfaces. </div> <div> </div> <div> Suppose I have two wayland clients. After I grab and move the surface of one client, I would like to maintain the relative positions of the the surfaces from two clients. Thus I have to automatically update the position of the other surface. </div> <div> </div> <div> I feel that surface position is stored in an instance of weston_view, which is mainly maintained by desktop-shell. So I am not sure if there is some easy way to achieve my goal by modifying desktop-shell. </div> <div> </div> <div> Thanks, </div> <div> Hongze </div> </div> </div> </div> </div> _______________________________________________ wayland-devel mailing list <a href="mailto:wayland-devel@lists.freedesktop.org" target="_blank">wayland-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/wayland-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/wayland-devel</a> </blockquote> </div> -- Jasper </div> </div> <div> </div> </div> </div> -- <div> Hongze Zhao <div> Department of Computer Science </div> <div> Duke University </div> <div> Email: <a href="mailto:zhaohongze@gmail.com" title="[GMCP] Compose a new mail to zhaohongze@gmail.com" target="_blank">zhaohongze@gmail.com</a> </div> </div> </div> </div> </div> </div> -- Jasper </div> </div> <div> </div> -- <div> Hongze Zhao <div> Department of Computer Science </div> <div> Duke University </div> <div> Email: <a href="mailto:zhaohongze@gmail.com" title="[GMCP] Compose a new mail to zhaohongze@gmail.com" target="_blank">zhaohongze@gmail.com</a> </div> </div> </div> </div></div></div> </div> _______________________________________________ wayland-devel mailing list <a href="mailto:wayland-devel@lists.freedesktop.org">wayland-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/wayland-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/wayland-devel</a> </blockquote></div> -- Jasper </div>