'Re: Review Request 109484: do not release clients that where reparented somewhere else'

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List:       kwin
Subject:    Re: Review Request 109484: do not release clients that where reparented somewhere else
From:       "Commit Hook" <null () kde ! org>
Date:       2013-03-28 19:32:23
Message-ID: 20130328193223.24317.61549 () vidsolbach ! de
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This is an automatically generated e-mail. To reply, visit:
http://git.reviewboard.kde.org/r/109484/
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(Updated March 28, 2013, 7:32 p.m.)

Status
------

This change has been marked as submitted.

Review request for kwin and Martin Gräßlin.

Description
-------

this breaks re-embedding clients

See demo:
http://kde-apps.org/content/show.php?content=157471

If you set WORKAROUND_KWIN 0 this will fail on kwin but still operate correctly on \
every other WM (that I tested).

XReparentWindow causes an unmap of mapped clients, currently leading into \
releaseClient() This will (among other) eg. reparent the client to the root and this \
is (usually?) executed after the original XReparentWindow, so the client does not end \
up where it's supposed to be.

Diffs
-----

  kwin/events.cpp b57e8ee 
  kwin/xcbutils.h 7a7add4 

Diff: http://git.reviewboard.kde.org/r/109484/diff/

Testing
-------

Running for a couple of days and extensively tested with a re-embedding client. \
(Extended my testcode to a nested tiling semi-WM ;-) No issues spotted.

I can not suggest to play around with the release code much (ie. ensure you've \
nothing important else on screen) Simply omitting releaseClient() will keep you ghost \
clients (not only in the compositor) and releasing but uncertain omitting of the \
reparent to root will get your windows lost (no more activatable yakuake) and playing \
with the server grab or saveset lost me all windows on "kwin --replace &" =)

Thanks,

Thomas Lübking

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

<p style="color: grey;"><i>Updated March 28, 2013, 7:32 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;">this breaks re-embedding clients

See demo:
http://kde-apps.org/content/show.php?content=157471

If you set WORKAROUND_KWIN 0 this will fail on kwin but still operate correctly on \
every other WM (that I tested).

XReparentWindow causes an unmap of mapped clients, currently leading into \
releaseClient() This will (among other) eg. reparent the client to the root and this \
is (usually?) executed after the original XReparentWindow, so the client does not end \
up where it&#39;s supposed to be.</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;">Running for a couple of days and extensively tested with a re-embedding \
client. (Extended my testcode to a nested tiling semi-WM ;-) No issues spotted.

I can not suggest to play around with the release code much (ie. ensure you&#39;ve \
nothing important else on screen) Simply omitting releaseClient() will keep you ghost \
clients (not only in the compositor) and releasing but uncertain omitting of the \
reparent to root will get your windows lost (no more activatable yakuake) and playing \
with the server grab or saveset lost me all windows on &quot;kwin --replace \
&amp;&quot; =)</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/events.cpp <span style="color: grey">(b57e8ee)</span></li>

 <li>kwin/xcbutils.h <span style="color: grey">(7a7add4)</span></li>

</ul>

<p><a href="http://git.reviewboard.kde.org/r/109484/diff/" style="margin-left: \
3em;">View Diff</a></p>

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