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List: kde-core-devel
Subject: Re: Review Request: Fix KWindowSystem::compositingChanged signal
From: "Xuetian Weng" <wengxt () gmail ! com>
Date: 2013-01-09 1:38:14
Message-ID: 20130109013814.20262.85802 () vidsolbach ! de
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kdeui/windowmanagement/kwindowsystem_x11.cpp
<http://git.reviewboard.kde.org/r/107983/#comment19169>
I thought you should check event->selection == net_wm_cm here, no?
kdeui/windowmanagement/kwindowsystem_x11.cpp
<http://git.reviewboard.kde.org/r/107983/#comment19170>
I don't quite get why this part is required. Since KWindowSystem already calls \
SelectSelectionInput in constructor, just use the above one and do window == winId \
and event->selection == net_wm_cm is enough.
- Xuetian Weng
On Jan. 9, 2013, 12:52 a.m., Thomas Lübking wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/107983/
> -----------------------------------------------------------
>
> (Updated Jan. 9, 2013, 12:52 a.m.)
>
>
> Review request for kdelibs, kwin, Plasma, Aaron J. Seigo, Marco Martin, Martin \
> Gräßlin, and Fredrik Höglund.
>
> Description
> -------
>
> It works fine here (tested so far KWindowSystem signal, KSelectionWatcher only with \
> kwin) with kwin (shift+alt+f12), xcompmgr, compiz & "metacity -c" and e17. Didn't \
> try xfce nor mutter.
> Technically:
> I do not at all understand why KWindowSystem is *not* watching the root window - \
> KSelectionOwner for one is sending events to the root and this also seems the case \
> for all other WMs (at least everything now starts to cause the signal to be \
> emitted)
> The KSelectionWatcher failure seems to be kwin specific (wrote me a cleaner \
> testcase), there'll be some X11 event processing on top that eats away the client \
> messages. So this one can be scratched from the patch, the KWindowSystem issue \
> remains.
>
> This addresses bug 179042.
> http://bugs.kde.org/show_bug.cgi?id=179042
>
>
> Diffs
> -----
>
> kdeui/windowmanagement/kwindowsystem_x11.cpp f9b3cc1
>
> Diff: http://git.reviewboard.kde.org/r/107983/diff/
>
>
> Testing
> -------
>
> see summary
>
>
> Thanks,
>
> Thomas Lübking
>
>
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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/107983/">http://git.reviewboard.kde.org/r/107983/</a>
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font-size: 9pt; padding: 4px 8px; text-align: left;"> <a \
href="http://git.reviewboard.kde.org/r/107983/diff/4/?file=106081#file106081line158" \
style="color: black; font-weight: bold; text-decoration: \
underline;">kdeui/windowmanagement/kwindowsystem_x11.cpp</a> <span \
style="font-weight: normal;">
(Diff revision 4)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void \
KWindowSystemPrivate::activate()</pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2">157</font></th> <td bgcolor="#ffffff" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "> <span \
class="kt">bool</span> <span class="n">haveOwner</span> <span class="o">=</span> \
<span class="n">event</span><span class="o">-></span><span class="n">owner</span> \
<span class="o">!=</span> <span class="n">None</span><span \
class="p">;</span></pre></td> <th bgcolor="#f0f0f0" style="border-left: 1px solid \
#C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font \
size="2">158</font></th> <td bgcolor="#ffffff" width="50%"><pre style="font-size: \
8pt; line-height: 140%; margin: 0; "> <span class="kt">bool</span> <span \
class="n">haveOwner</span> <span class="o">=</span> <span class="n">event</span><span \
class="o">-></span><span class="n">owner</span> <span class="o">!=</span> <span \
class="n">None</span><span class="p">;</span></pre></td> </tr>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; \
white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I thought \
you should check event->selection == net_wm_cm here, no?</pre> </div>
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<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/107983/diff/4/?file=106081#file106081line168" \
style="color: black; font-weight: bold; text-decoration: \
underline;">kdeui/windowmanagement/kwindowsystem_x11.cpp</a> <span \
style="font-weight: normal;">
(Diff revision 4)
</span>
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<tbody style="background-color: #e4d9cb; padding: 4px 8px; text-align: center;">
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void \
KWindowSystemPrivate::activate()</pre></td>
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</tbody>
<tbody>
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<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">168</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">ev</span><span \
class="o">-></span><span class="n">xany</span><span class="p">.</span><span \
class="n">window</span> <span class="o">==</span> <span \
class="n">QX11Info</span><span class="o">::</span><span \
class="n">appRootWindow</span><span class="p">()</span> <span class="p">)</span> \
<span class="p">{</span></pre></td> </tr>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; \
white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I don't \
quite get why this part is required. Since KWindowSystem already calls \
SelectSelectionInput in constructor, just use the above one and do window == winId \
and event->selection == net_wm_cm is enough.</pre> </div>
<br />
<p>- Xuetian</p>
<br />
<p>On January 9th, 2013, 12:52 a.m., Thomas Lübking wrote:</p>
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<div>Review request for kdelibs, kwin, Plasma, Aaron J. Seigo, Marco Martin, Martin \
Gräßlin, and Fredrik Höglund.</div> <div>By Thomas Lübking.</div>
<p style="color: grey;"><i>Updated Jan. 9, 2013, 12:52 a.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;">It works fine here (tested so far KWindowSystem signal, \
KSelectionWatcher only with kwin) with kwin (shift+alt+f12), xcompmgr, compiz & \
"metacity -c" and e17. Didn't try xfce nor mutter.
Technically:
I do not at all understand why KWindowSystem is *not* watching the root window - \
KSelectionOwner for one is sending events to the root and this also seems the case \
for all other WMs (at least everything now starts to cause the signal to be emitted)
The KSelectionWatcher failure seems to be kwin specific (wrote me a cleaner \
testcase), there'll be some X11 event processing on top that eats away the client \
messages. So this one can be scratched from the patch, the KWindowSystem issue \
remains.</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;">see summary</pre> </td>
</tr>
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<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="http://bugs.kde.org/show_bug.cgi?id=179042">179042</a>
</div>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>kdeui/windowmanagement/kwindowsystem_x11.cpp <span style="color: \
grey">(f9b3cc1)</span></li>
</ul>
<p><a href="http://git.reviewboard.kde.org/r/107983/diff/" style="margin-left: \
3em;">View Diff</a></p>
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