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List: kwin
Subject: Re: Review Request: use _NET_WM_STATE_HIDDEN to check if the window is minimized instead of WM_STATE
From: Thomas_Lübking <thomas.luebking () gmail ! com>
Date: 2013-01-10 0:15:32
Message-ID: 20130110001532.8672.96264 () vidsolbach ! de
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Copied over from https://git.reviewboard.kde.org/r/108308/
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There should be no problem with ths one since WMs are encouraged ("should", *sigh*) \
to set _NET_WM_HIDDEN for minimized windows and the major ones do. If _NET_WM_STATE \
is absent it's considered 0, thus does not match HIDDEN, thus passes the check over \
to the ICCCM state.
The "weird" condition is when a window has HIDDEN but not inconified, just that this \
is what the patch uses a fix. No apparent concerns from my side.
- Thomas Lübking
On Jan. 10, 2013, 12:12 a.m., Yichao Yu wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/108308/
> -----------------------------------------------------------
>
> (Updated Jan. 10, 2013, 12:12 a.m.)
>
>
> Review request for kdelibs, kwin, Aaron J. Seigo, and Martin Gräßlin.
>
>
> Description
> -------
>
> When setting "Keep window thumbnails" to "Always (Breaks minimization)", kwin will \
> keep WM_STATE to be NORMAL when a client is minimized while including \
> _NET_WM_STATE_HIDDEN in its _NET_WM_STATE, as confirmed by ICCCM[1] and Extended \
> Window Manager Hints[2]. However, apart from the expected result (breaks \
> minimization: the client will continue to refresh its content) the minimized window \
> is not shown as minimized in icontasks and pager.
> These two plasma addons (and probably other addons as well) uses \
> KWindowInfo::isMinimized to determine whether the window is minimized. However, \
> this function threat all window that are not Iconic (WM_STATE != ICONIC) as not \
> minimized, in contradiction to the "Extended window manager hints" which says, \
> "Pagers and similar applications should use _NET_WM_STATE_HIDDEN instead of \
> WM_STATE to decide whether to display a window in miniature representations of the \
> windows on a desktop."
> This patch correct this behavior and therefore correct the behavior of both pager \
> and icontasks in this situation.
> [1] http://tronche.com/gui/x/icccm/sec-4.html#s-4.1.3.1
> [2] http://standards.freedesktop.org/wm-spec/wm-spec-1.3.html#id2731936
>
>
> Diffs
> -----
>
> kdeui/windowmanagement/kwindowinfo_x11.cpp d983c9a
>
> Diff: http://git.reviewboard.kde.org/r/108308/diff/
>
>
> Testing
> -------
>
> Compiled, pager and icontasks shows minimized windows correctly.
> Also tested on openbox (+plasma's pager) by "Xuetian Weng".
>
>
> Thanks,
>
> Yichao Yu
>
>
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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/108308/">http://git.reviewboard.kde.org/r/108308/</a>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Copied over from \
https://git.reviewboard.kde.org/r/108308/
----
There should be no problem with ths one since WMs are encouraged ("should", \
*sigh*) to set _NET_WM_HIDDEN for minimized windows and the major ones do. If \
_NET_WM_STATE is absent it's considered 0, thus does not match HIDDEN, thus \
passes the check over to the ICCCM state.
The "weird" condition is when a window has HIDDEN but not inconified, just \
that this is what the patch uses a fix. No apparent concerns from my side.</pre>
<br />
<p>- Thomas</p>
<br />
<p>On January 10th, 2013, 12:12 a.m., Yichao Yu wrote:</p>
<table bgcolor="#fefadf" width="100%" cellspacing="0" cellpadding="8" \
style="background-image: \
url('http://git.reviewboard.kde.org/media/rb/images/review_request_box_top_bg.png'); \
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<div>Review request for kdelibs, kwin, Aaron J. Seigo, and Martin Gräßlin.</div>
<div>By Yichao Yu.</div>
<p style="color: grey;"><i>Updated Jan. 10, 2013, 12:12 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;">When setting "Keep window thumbnails" to "Always (Breaks \
minimization)", kwin will keep WM_STATE to be NORMAL when a client is minimized \
while including _NET_WM_STATE_HIDDEN in its _NET_WM_STATE, as confirmed by ICCCM[1] \
and Extended Window Manager Hints[2]. However, apart from the expected result (breaks \
minimization: the client will continue to refresh its content) the minimized window \
is not shown as minimized in icontasks and pager.
These two plasma addons (and probably other addons as well) uses \
KWindowInfo::isMinimized to determine whether the window is minimized. However, this \
function threat all window that are not Iconic (WM_STATE != ICONIC) as not minimized, \
in contradiction to the "Extended window manager hints" which says, \
"Pagers and similar applications should use _NET_WM_STATE_HIDDEN instead of \
WM_STATE to decide whether to display a window in miniature representations of the \
windows on a desktop."
This patch correct this behavior and therefore correct the behavior of both pager and \
icontasks in this situation.
[1] http://tronche.com/gui/x/icccm/sec-4.html#s-4.1.3.1
[2] http://standards.freedesktop.org/wm-spec/wm-spec-1.3.html#id2731936
</pre>
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<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;">Compiled, pager and icontasks shows minimized windows correctly. Also \
tested on openbox (+plasma's pager) by "Xuetian Weng".</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>kdeui/windowmanagement/kwindowinfo_x11.cpp <span style="color: \
grey">(d983c9a)</span></li>
</ul>
<p><a href="http://git.reviewboard.kde.org/r/108308/diff/" style="margin-left: \
3em;">View Diff</a></p>
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