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List:       kwin
Subject:    Re: Review Request: Add Rule/Property based composite blocking
From:       Thomas_Lübking <thomas.luebking () web ! de>
Date:       2011-03-20 17:53:16
Message-ID: 20110320175316.14129.88274 () vidsolbach ! de
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> On March 20, 2011, 4:31 p.m., Martin Gräßlin wrote:
> > Very nice functionality, I like it.
> > 
> > Probably we should extend it to
> > * announce support in _NET_SUPPORTED
> > * add functionality to netwm/KWindowSystem
> > * bring it to NETWM spec (though I doubt we have success given that \
> > GNOME Shell and Unity require compositing all the time)

Afaik unity will explicitly NOT require compositing (at all) - therefore \
the move towards Qt. However i'm not too optimistic that it will be \
accepted (outside KDE) either. We might have to think about a (partial) \
logic inversion.

In that case, every fullscreen client would block compositing unless \
explicitly permitting it.

So _KDE_NET_WM_BLOCK_COMPOSITING would turn into \
_KDE_NET_WM_WANT_COMPOSITING 0 means "no", everything else "yes" and an \
absent property triggers the default behavior (not fs -> compositing good, \
fs -> compositing bad)

This way we'd catch "legal" fs clients (games, video players) out of the \
box, nasty (tm ;-) gkt+ applications (office/browser) look "ugly" in fs \
while fs prone KDE applications (<strike>koffice</strike> calligra, \
konqueror/rekonq i assume? - whatever) could keep compositing active \
despite the fs mode.

I'd rather dislike this way, but ultimately it's the result on the user \
desktop that matters... :-\

=> I'll branch off the netwm stuff, we try and on failure can still think \
about the more aggressive push.


> On March 20, 2011, 4:31 p.m., Martin Gräßlin wrote:
> > kwin/client.cpp, lines 2114-2117
> > <http://git.reviewboard.kde.org/r/100893/diff/1/?file=11605#file11605line2114>
> >  
> > Why the bool readProperty? If I read the code correctly it's a no-op if \
> > readProperty is false

Code body. If we don't (find a way to) do it state dependent (fs mode) it's \
completely superfluous. Otherwise just lacks "else blocks_compositing = \
rules()->checkBlockCompositing(blocks_compositing);"


- Thomas


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
http://git.reviewboard.kde.org/r/100893/#review2063
-----------------------------------------------------------


On March 20, 2011, 3:11 p.m., Thomas Lübking wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/100893/
> -----------------------------------------------------------
> 
> (Updated March 20, 2011, 3:11 p.m.)
> 
> 
> Review request for kwin.
> 
> 
> Summary
> -------
> 
> Allows windows (or users via the rule system) to block compositing while \
> they're present. The user still can resume and re-suspend compositing at \
> any time (but if it has originally been suspended for a blocking client \
> it will be resumed the moment the last blocking client disappears) 
> Outstanding issue is that the rules to not allow to apply by fullscreen \
> mode. No real idea how we should handle this (add to rules globally or do \
> some rule specific) 
> 
> Diffs
> -----
> 
> kwin/atoms.h 7d5752c 
> kwin/atoms.cpp 5e93b2a 
> kwin/client.h 0d479a0 
> kwin/client.cpp ec60bde 
> kwin/composite.cpp 6783d32 
> kwin/events.cpp 05cf864 
> kwin/kcmkwin/kwinrules/ruleswidget.h ca44bf2 
> kwin/kcmkwin/kwinrules/ruleswidget.cpp f9fc407 
> kwin/kcmkwin/kwinrules/ruleswidgetbase.ui 74ac56b 
> kwin/manage.cpp 135a016 
> kwin/rules.h 87b2055 
> kwin/rules.cpp 9e4136a 
> kwin/workspace.h 3f6ad49 
> kwin/workspace.cpp 3c77511 
> 
> Diff: http://git.reviewboard.kde.org/r/100893/diff
> 
> 
> Testing
> -------
> 
> Rule based & "xprop -f _KDE_NET_WM_BLOCK_COMPOSITING 32a -set \
> _KDE_NET_WM_BLOCK_COMPOSITING 1" No client internal property setting \
> tested (so far) but it should work as well... ;-) 
> 
> Thanks,
> 
> Thomas
> 
> 


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      This is an automatically generated e-mail. To reply, visit:
      <a href="http://git.reviewboard.kde.org/r/100893/">http://git.reviewboard.kde.org/r/100893/</a>
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<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; \
padding-left: 10px;">  <p style="margin-top: 0;">On March 20th, 2011, 4:31 \
p.m., <b>Martin Gräßlin</b> wrote:</p>  <blockquote style="margin-left: \
1em; border-left: 2px solid #d0d0d0; padding-left: 10px;">  <pre \
style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Very nice \
functionality, I like it.

Probably we should extend it to
* announce support in _NET_SUPPORTED
* add functionality to netwm/KWindowSystem
* bring it to NETWM spec (though I doubt we have success given that GNOME \
Shell and Unity require compositing all the time)</pre>  </blockquote>







</blockquote>

<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Afaik unity \
will explicitly NOT require compositing (at all) - therefore the move \
towards Qt. However i&#39;m not too optimistic that it will be accepted \
(outside KDE) either. We might have to think about a (partial) logic \
inversion.

In that case, every fullscreen client would block compositing unless \
explicitly permitting it.

So _KDE_NET_WM_BLOCK_COMPOSITING would turn into \
_KDE_NET_WM_WANT_COMPOSITING 0 means &quot;no&quot;, everything else \
&quot;yes&quot; and an absent property triggers the default behavior (not \
fs -&gt; compositing good, fs -&gt; compositing bad)

This way we&#39;d catch &quot;legal&quot; fs clients (games, video players) \
out of the box, nasty (tm ;-) gkt+ applications (office/browser) look \
&quot;ugly&quot; in fs while fs prone KDE applications \
(&lt;strike&gt;koffice&lt;/strike&gt; calligra, konqueror/rekonq i assume? \
- whatever) could keep compositing active despite the fs mode.

I&#39;d rather dislike this way, but ultimately it&#39;s the result on the \
user desktop that matters... :-\

=&gt; I&#39;ll branch off the netwm stuff, we try and on failure can still \
think about the more aggressive push.</pre> <br />





<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; \
padding-left: 10px;">  <p style="margin-top: 0;">On March 20th, 2011, 4:31 \
p.m., <b>Martin Gräßlin</b> wrote:</p>  <blockquote style="margin-left: \
1em; border-left: 2px solid #d0d0d0; padding-left: 10px;">  



<table width="100%" border="0" bgcolor="white" style="border: 1px solid \
#C0C0C0; border-collapse: collapse; margin: 2px padding: 2px;">  <thead>
  <tr>
   <th colspan="4" bgcolor="#F0F0F0" style="border-bottom: 1px solid \
#C0C0C0; font-size: 9pt; padding: 4px 8px; text-align: left;">  <a \
href="http://git.reviewboard.kde.org/r/100893/diff/1/?file=11605#file11605line2114" \
style="color: black; font-weight: bold; text-decoration: \
underline;">kwin/client.cpp</a>  <span style="font-weight: normal;">

     (Diff revision 1)

    </span>
   </th>
  </tr>
 </thead>

 <tbody style="background-color: #e4d9cb; padding: 4px 8px; text-align: \
center;">  <tr>

   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: \
0; ">void Client::updateCursor()</pre></td>

  </tr>
 </tbody>




 
 



 <tbody>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; \
"></pre></td>  <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; \
border-right: 1px solid #C0C0C0;" align="right"><font \
size="2">2114</font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "><span \
class="kt">void</span> <span class="n">Client</span><span \
class="o">::</span><span class="n">updateCompositeBlocking</span><span \
class="p">(</span><span class="kt">bool</span> <span \
class="n">readProperty</span><span class="p">)</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; \
"></pre></td>  <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; \
border-right: 1px solid #C0C0C0;" align="right"><font \
size="2">2115</font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "><span \
class="p">{</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; \
"></pre></td>  <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; \
border-right: 1px solid #C0C0C0;" align="right"><font \
size="2">2116</font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; ">    <span \
class="k">const</span> <span class="kt">bool</span> <span \
class="n">usedToBlock</span> <span class="o">=</span> <span \
class="n">blocks_compositing</span><span class="p">;</span></pre></td>  \
</tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; \
"></pre></td>  <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; \
border-right: 1px solid #C0C0C0;" align="right"><font \
size="2">2117</font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; ">    <span \
class="k">if</span> <span class="p">(</span><span \
class="n">readProperty</span><span class="p">)</span> <span \
class="p">{</span></pre></td>  </tr>

 </tbody>

</table>

  <pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; \
white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">Why the bool readProperty? If I read the code correctly \
it&#39;s a no-op if readProperty is false</pre>  </blockquote>





</blockquote>
<pre style="margin-left: 1em; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">Code body. If we don&#39;t (find a way to) do it state \
dependent (fs mode) it&#39;s completely superfluous. Otherwise just lacks \
&quot;else blocks_compositing = \
rules()-&gt;checkBlockCompositing(blocks_compositing);&quot;</pre> <br />




<p>- Thomas</p>


<br />
<p>On March 20th, 2011, 3:11 p.m., Thomas Lübking wrote:</p>






<table bgcolor="#fefadf" width="100%" cellspacing="0" cellpadding="8" \
style="background-image: \
url('http://git.reviewboard.kde.orgrb/images/review_request_box_top_bg.png'); \
background-position: left top; background-repeat: repeat-x; border: 1px \
black solid;">  <tr>
  <td>

<div>Review request for kwin.</div>
<div>By Thomas Lübking.</div>


<p style="color: grey;"><i>Updated March 20, 2011, 3:11 p.m.</i></p>




<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description \
</h1> <table width="100%" bgcolor="#ffffff" cellspacing="0" \
cellpadding="10" style="border: 1px solid #b8b5a0">  <tr>
  <td>
   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">Allows windows (or users via the rule system) to block \
compositing while they&#39;re present. The user still can resume and \
re-suspend compositing at any time (but if it has originally been suspended \
for a blocking client it will be resumed the moment the last blocking \
client disappears)

Outstanding issue is that the rules to not allow to apply by fullscreen \
mode. No real idea how we should handle this (add to rules globally or do \
some rule specific)</pre>  </td>
 </tr>
</table>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing \
</h1> <table width="100%" bgcolor="#ffffff" cellspacing="0" \
cellpadding="10" style="border: 1px solid #b8b5a0">  <tr>
  <td>
   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">Rule based &amp; &quot;xprop -f _KDE_NET_WM_BLOCK_COMPOSITING \
32a -set _KDE_NET_WM_BLOCK_COMPOSITING 1&quot; No client internal property \
setting tested (so far) but it should work as well... ;-)</pre>  </td>
 </tr>
</table>




<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> \
</h1> <ul style="margin-left: 3em; padding-left: 0;">

 <li>kwin/atoms.h <span style="color: grey">(7d5752c)</span></li>

 <li>kwin/atoms.cpp <span style="color: grey">(5e93b2a)</span></li>

 <li>kwin/client.h <span style="color: grey">(0d479a0)</span></li>

 <li>kwin/client.cpp <span style="color: grey">(ec60bde)</span></li>

 <li>kwin/composite.cpp <span style="color: grey">(6783d32)</span></li>

 <li>kwin/events.cpp <span style="color: grey">(05cf864)</span></li>

 <li>kwin/kcmkwin/kwinrules/ruleswidget.h <span style="color: \
grey">(ca44bf2)</span></li>

 <li>kwin/kcmkwin/kwinrules/ruleswidget.cpp <span style="color: \
grey">(f9fc407)</span></li>

 <li>kwin/kcmkwin/kwinrules/ruleswidgetbase.ui <span style="color: \
grey">(74ac56b)</span></li>

 <li>kwin/manage.cpp <span style="color: grey">(135a016)</span></li>

 <li>kwin/rules.h <span style="color: grey">(87b2055)</span></li>

 <li>kwin/rules.cpp <span style="color: grey">(9e4136a)</span></li>

 <li>kwin/workspace.h <span style="color: grey">(3f6ad49)</span></li>

 <li>kwin/workspace.cpp <span style="color: grey">(3c77511)</span></li>

</ul>

<p><a href="http://git.reviewboard.kde.org/r/100893/diff/" \
style="margin-left: 3em;">View Diff</a></p>




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