<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="Generator" content="Microsoft Word 12 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="blue" vlink="purple"> <div class="WordSection1"> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi,<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">you can do it with weston-ivi-shell. IVI-Shell introduces layer concept to weston.<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">A layer is a group of surfaces which can be moved or resized together. <o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">But IVI-Shell is just an interface and you have to implement your own APIs to use it.<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Wayland-IVI-Extension is a set of readily implemented APIs which are using weston-ivi-shell.<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Some example APIs:<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">ilm_layerSetPosition <o:p></o:p></span></b></p> <p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">“</span></b><span style="font-size:9.0pt;font-family:NimbusRomNo9L-ReguItal">Sets the horizontal and vertical position of the layer. Relative position of layer’s surfaces would be maintained.”<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">ilm_layerSetDestinationRectangle <o:p></o:p></span></b></p> <p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">“</span></b><span style="font-size:9.0pt;font-family:NimbusRomNo9L-ReguItal">Set the destination area on the display for a layer. The layer will be scaled and positioned to this rectangle<o:p></o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:NimbusRomNo9L-ReguItal">for rendering.”<o:p></o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:NimbusRomNo9L-ReguItal"><o:p> </o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">ilm_layerSetVisibility<o:p></o:p></span></b></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:NimbusRomNo9L-ReguItal">“Sets the visibility for all surfaces of a layer”<o:p></o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:NimbusRomNo9L-ReguItal"><o:p> </o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">ilm_layerSetVisibility<o:p></o:p></span></b></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:NimbusRomNo9L-ReguItal">“Sets the opacity for all surfaces of a layer”<o:p></o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:NimbusRomNo9L-ReguItal"><o:p> </o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You can get more information from the website: <a href="http://projects.genivi.org/wayland-ivi-extension/home"><span style="color:#1F497D">http://projects.genivi.org/wayland-ivi-extension/home</span></a><o:p></o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you are interested I can help you to install & use it.<o:p></o:p></span></p> <p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></b></p> <p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Best regards</span><span style="font-size:8.0pt;color:#1F497D"><br> </span><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D"><br> </span><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Emre Ucan</span></b><span style="font-size:8.0pt;color:#1F497D"><br> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Software Group I (ADITG/SW1)</span><span style="font-size:8.0pt;color:#1F497D"><br> </span><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D"><br> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Tel. +49 5121 49 6937</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"> <p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> wayland-devel [mailto:wayland-devel-bounces@lists.freedesktop.org] <b>On Behalf Of </b>Hongze Zhao<br> <b>Sent:</b> Donnerstag, 25. September 2014 03:49<br> <b>To:</b> Jasper St. Pierre<br> <b>Cc:</b> wayland mailing list<br> <b>Subject:</b> Re: How to maintain relative position of two surfaces?<o:p></o:p></span></p> </div> <p class="MsoNormal"><o:p> </o:p></p> <div> <p class="MsoNormal">I am not familiar with subsurfaces as I am new to weston. I will look at it and see how it works. <o:p></o:p></p> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">Thanks,<o:p></o:p></p> </div> <div> <p class="MsoNormal">Hongze<o:p></o:p></p> </div> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> <div> <p class="MsoNormal">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:<o:p></o:p></p> <div> <p class="MsoNormal">This sounds like you want to use subsurfaces, then.<br> <br> Any reason you can't just draw the child surface on top of the father surface, though?<o:p></o:p></p> </div> <div> <div> <div> <p class="MsoNormal"><o:p> </o:p></p> <div> <p class="MsoNormal">On Wed, Sep 24, 2014 at 6:16 PM, Hongze Zhao <<a href="mailto:zhaohongze@gmail.com" target="_blank">zhaohongze@gmail.com</a>> wrote:<o:p></o:p></p> <div> <p class="MsoNormal">Hi Jasper,<o:p></o:p></p> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">Thanks for reply. <o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">Here is my use case.<o:p></o:p></p> </div> <div> <p class="MsoNormal"> <img border="0" width="562" height="279" id="_x0000_i1025" src="cid:image001.png@01CFD8A0.CF723890"><o:p></o:p></p> </div> <div> <p class="MsoNormal">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. <o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">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.<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">Thanks,<o:p></o:p></p> </div> <div> <p class="MsoNormal">Hongze<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> </div> <div> <div> <div> <p class="MsoNormal"><o:p> </o:p></p> <div> <p class="MsoNormal">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:<o:p></o:p></p> <div> <div> <p class="MsoNormal" style="margin-bottom:12.0pt">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.<o:p></o:p></p> </div> <p class="MsoNormal">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?<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> <div> <div> <div> <p class="MsoNormal">On Wed, Sep 24, 2014 at 5:49 PM, Hongze Zhao <<a href="mailto:zhaohongze@gmail.com" target="_blank">zhaohongze@gmail.com</a>> wrote:<o:p></o:p></p> </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> <p class="MsoNormal">Hi All,<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">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. <o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">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. <o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">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.<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">Thanks,<o:p></o:p></p> </div> <div> <p class="MsoNormal">Hongze <o:p></o:p></p> </div> </div> </div> <p class="MsoNormal"><o:p> </o:p></p> </div> </div> <p class="MsoNormal" style="margin-bottom:12.0pt">_______________________________________________<br> wayland-devel mailing list<br> <a href="mailto:wayland-devel@lists.freedesktop.org" target="_blank">wayland-devel@lists.freedesktop.org</a><br> <a href="http://lists.freedesktop.org/mailman/listinfo/wayland-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/wayland-devel</a><o:p></o:p></p> </blockquote> </div> <p class="MsoNormal"><span style="color:#888888"><br> <br clear="all"> <br> -- <br> Jasper</span><o:p></o:p></p> </div> </div> <p class="MsoNormal"><br> <br clear="all"> <o:p></o:p></p> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> </div> </div> <p class="MsoNormal"><span style="color:#888888">-- <o:p></o:p></span></p> <div> <p class="MsoNormal"><span style="color:#888888">Hongze Zhao<o:p></o:p></span></p> <div> <p class="MsoNormal"><span style="color:#888888">Department of Computer Science<o:p></o:p></span></p> </div> <div> <p class="MsoNormal"><span style="color:#888888">Duke University<o:p></o:p></span></p> </div> <div> <p class="MsoNormal"><span style="color:#888888">Email: <a href="mailto:zhaohongze@gmail.com" target="_blank" title="[GMCP] Compose a new mail to zhaohongze@gmail.com">zhaohongze@gmail.com</a><o:p></o:p></span></p> </div> </div> </div> </div> <p class="MsoNormal"><br> <br clear="all"> <o:p></o:p></p> </div> </div> <p class="MsoNormal"><span class="hoenzb"><span style="color:#888888">-- </span></span><span style="color:#888888"><br> <span class="hoenzb"> Jasper</span></span><o:p></o:p></p> </div> </div> <p class="MsoNormal"><br> <br clear="all"> <o:p></o:p></p> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <p class="MsoNormal">-- <o:p></o:p></p> <div> <p class="MsoNormal">Hongze Zhao<o:p></o:p></p> <div> <p class="MsoNormal">Department of Computer Science<o:p></o:p></p> </div> <div> <p class="MsoNormal">Duke University<o:p></o:p></p> </div> <div> <p class="MsoNormal">Email: <a href="mailto:zhaohongze@gmail.com" target="_blank" title="[GMCP] Compose a new mail to zhaohongze@gmail.com">zhaohongze@gmail.com</a><o:p></o:p></p> </div> </div> </div> </div> </body> </html>