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List:       freedesktop-xorg
Subject:    Re: How to detect (subscribe to) messages that causes screen repaint
From:       Nikola Radovanovic <nikoladsp () gmail ! com>
Date:       2018-07-05 19:40:24
Message-ID: CAH3us8Tsx1gebPQ9WeN-Z=gJBM38=h3+YYFZh+gupqHbLHU-tQ () mail ! gmail ! com
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Hi,
thank you for the response. I will take a look.

Its a project requirement, so cant do much about it :)

Best regards

On Thu, Jul 5, 2018 at 9:18 PM, Adam Jackson <ajax@redhat.com> wrote:

> On Thu, 2018-07-05 at 20:06 +0200, Nikola Radovanovic wrote:
> > Hello,
> > Can someone please point me to some documentation/samples on how to
> > do the following:
> >
> > I have to detect events (messages) that are issued when any of
> > attached screens (one or possibly more of them) will be repainted
> > (partially or completely). So any key press, new window, resize
> > window, mouse move etc.
>
> For updated window content, you want the Damage extension's events. X
> doesn't have globally-available events for mouse motion though, sorry.
>
> > What I am trying is to write a simple VNC viewer (server) for
> > Linux/Android and I have not yet managed to figure out how to
> > subscribe to such events in order to get 'paint' message and affected
> > rectangular area.
>
> I mean, tigervnc already exists, but sure, write another one, why not.
> Do consider reading it though, unix/x0vncserver/*.cxx is pretty much
> what you're describing, including examples of how to register for and
> parse Damage events.
>
> - ajax
>

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<div dir="ltr">Hi,<div>thank you for the response. I will take a look.  \
</div><div><br></div><div>Its a project requirement, so cant do much about it \
:)</div><div><br></div><div>Best regards</div></div><div class="gmail_extra"><br><div \
class="gmail_quote">On Thu, Jul 5, 2018 at 9:18 PM, Adam Jackson <span \
dir="ltr">&lt;<a href="mailto:ajax@redhat.com" \
target="_blank">ajax@redhat.com</a>&gt;</span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><span class="">On Thu, 2018-07-05 at 20:06 +0200, Nikola \
Radovanovic wrote:<br> &gt; Hello,<br>
&gt; Can someone please point me to some documentation/samples on how to<br>
&gt; do the following:<br>
&gt; <br>
&gt; I have to detect events (messages) that are issued when any of<br>
&gt; attached screens (one or possibly more of them) will be repainted<br>
&gt; (partially or completely). So any key press, new window, resize<br>
&gt; window, mouse move etc.<br>
<br>
</span>For updated window content, you want the Damage extension&#39;s events. X<br>
doesn&#39;t have globally-available events for mouse motion though, sorry.<br>
<span class=""><br>
&gt; What I am trying is to write a simple VNC viewer (server) for<br>
&gt; Linux/Android and I have not yet managed to figure out how to<br>
&gt; subscribe to such events in order to get &#39;paint&#39; message and \
affected<br> &gt; rectangular area.<br>
<br>
</span>I mean, tigervnc already exists, but sure, write another one, why not.<br>
Do consider reading it though, unix/x0vncserver/*.cxx is pretty much<br>
what you&#39;re describing, including examples of how to register for and<br>
parse Damage events.<br>
<br>
- ajax<br>
</blockquote></div><br></div>


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