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List: kde-panel-devel
Subject: Re: Review Request: Separate caching for unthemed SVGs requesting
From: "Manuel Mommertz" <2kmm () gmx ! de>
Date: 2010-12-05 14:50:31
Message-ID: 20101205145031.30468.45383 () vidsolbach ! de
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http://svn.reviewboard.kde.org/r/6008/#review9136
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It is now even worse then before. Unthemed graphics still use the colors fr=
om plasma theme but don't get informed if the theme changes. this means, th=
e colors that are used when first rendering the graphics stay even if I swi=
tch the theme.
The plasma elements itself don't get rerendered on theme change. Only graph=
ics that have to be rerendered for another reason (resizing a widget, ...) =
get the svg's from the new activated theme.
- Manuel
On 2010-11-28 23:52:16, Aaron Seigo wrote:
> =
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://svn.reviewboard.kde.org/r/6008/
> -----------------------------------------------------------
> =
> (Updated 2010-11-28 23:52:16)
> =
> =
> Review request for Plasma.
> =
> =
> Summary
> -------
> =
> see: http://www.mail-archive.com/plasma-devel@kde.org/msg13494.html
> =
> this introduces a Theme object used by Svg to cache the rendering of svg'=
s asking to be colorized, but which are not part of the theme. this require=
s an independent cache and set of color files, therefore a second Theme obj=
ect. SvgPrivate::actualTheme() is thus overridden by SvgPrivate::cacheAndCo=
lorsTheme() whenever caching or colors are used.
> =
> there are two remaining defects of varying severity, though neither is ve=
ry high imho:
> =
> a) if the system color palette changes when the application is not runnin=
g (or an svg using such a theme is not running) the cache will not be dropp=
ed. this is an existing issue, however, not something introduce by this pat=
chset
> =
> b) the new system color theme is shared for performance reasons, but once=
created it is never deleted. it ought to be reference counted so it can be=
cleaned up after in use, but this is currently not done.
> =
> several other fixes crept into this patchset (sorry :/) including:
> =
> * not dropping the cache just because we change themes; this made sense w=
hen just plasma-desktop used this or when the apps using Plasma::Theme all =
used the same theme. this is no longer the case, really, and having applica=
tions changing themes randomly kicking the cache out from underneath other =
apps that may still be using it is undesirable. this does mean that cache f=
iles will accumulate. not sure that's a big issue as they don't tend to be =
large and are in an area marked as "cache" (so ripe for clean-without-care)
> =
> * consolidate the signal/slot connections in SvgPrivate::checkColorHints,=
and now the check is consistent on all paths (previously, it wasn't!)
> =
> * missing (and possible cause of cache key ambiguity) separator in CACHE_=
ID_WITH_SIZE
> =
> * cleanups such as getting rid of superfluous use of Plasma:: namespacing=
in code that is now in libplasma, such as the stylesheeting. (it was from =
a plasmoid sebas wrote originally, iirc, explaining the historical reason f=
or the explicit namespacing)
> =
> in any case, consider this a draft at this stage. i'm interested in getin=
g feedback, improvements and testing.
> =
> =
> Diffs
> -----
> =
> /trunk/KDE/kdelibs/plasma/private/svg_p.h 1199366 =
> /trunk/KDE/kdelibs/plasma/svg.cpp 1201684 =
> /trunk/KDE/kdelibs/plasma/theme.cpp 1201685 =
> =
> Diff: http://svn.reviewboard.kde.org/r/6008/diff
> =
> =
> Testing
> -------
> =
> just running normal plasma-desktop and what i use. needs testing with svg=
's that will actually rely on this feature.
> =
> =
> Thanks,
> =
> Aaron
> =
>
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This is an automatically generated e-mail. To reply, visit:
<a href="http://svn.reviewboard.kde.org/r/6008/">http://svn.reviewboard.kde.org/r/6008/</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;">It is now even worse \
then before. Unthemed graphics still use the colors from plasma theme but don't \
get informed if the theme changes. this means, the colors that are used when first \
rendering the graphics stay even if I switch the theme. The plasma elements itself \
don't get rerendered on theme change. Only graphics that have to be rerendered \
for another reason (resizing a widget, ...) get the svg's from the new activated \
theme.</pre> <br />
<p>- Manuel</p>
<br />
<p>On November 28th, 2010, 11:52 p.m., Aaron Seigo wrote:</p>
<table bgcolor="#fefadf" width="100%" cellspacing="0" cellpadding="8" \
style="background-image: \
url('http://svn.reviewboard.kde.orgrb/images/review_request_box_top_bg.png'); \
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solid;"> <tr>
<td>
<div>Review request for Plasma.</div>
<div>By Aaron Seigo.</div>
<p style="color: grey;"><i>Updated 2010-11-28 23:52:16</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;">see: http://www.mail-archive.com/plasma-devel@kde.org/msg13494.html
this introduces a Theme object used by Svg to cache the rendering of svg's asking \
to be colorized, but which are not part of the theme. this requires an independent \
cache and set of color files, therefore a second Theme object. \
SvgPrivate::actualTheme() is thus overridden by SvgPrivate::cacheAndColorsTheme() \
whenever caching or colors are used.
there are two remaining defects of varying severity, though neither is very high \
imho:
a) if the system color palette changes when the application is not running (or an svg \
using such a theme is not running) the cache will not be dropped. this is an existing \
issue, however, not something introduce by this patchset
b) the new system color theme is shared for performance reasons, but once created it \
is never deleted. it ought to be reference counted so it can be cleaned up after in \
use, but this is currently not done.
several other fixes crept into this patchset (sorry :/) including:
* not dropping the cache just because we change themes; this made sense when just \
plasma-desktop used this or when the apps using Plasma::Theme all used the same \
theme. this is no longer the case, really, and having applications changing themes \
randomly kicking the cache out from underneath other apps that may still be using it \
is undesirable. this does mean that cache files will accumulate. not sure that's \
a big issue as they don't tend to be large and are in an area marked as \
"cache" (so ripe for clean-without-care)
* consolidate the signal/slot connections in SvgPrivate::checkColorHints, and now the \
check is consistent on all paths (previously, it wasn't!)
* missing (and possible cause of cache key ambiguity) separator in CACHE_ID_WITH_SIZE
* cleanups such as getting rid of superfluous use of Plasma:: namespacing in code \
that is now in libplasma, such as the stylesheeting. (it was from a plasmoid sebas \
wrote originally, iirc, explaining the historical reason for the explicit \
namespacing)
in any case, consider this a draft at this stage. i'm interested in geting \
feedback, improvements and testing.</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;">just running normal plasma-desktop and what i use. needs testing with \
svg's that will actually rely on this feature.</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>/trunk/KDE/kdelibs/plasma/private/svg_p.h <span style="color: \
grey">(1199366)</span></li>
<li>/trunk/KDE/kdelibs/plasma/svg.cpp <span style="color: \
grey">(1201684)</span></li>
<li>/trunk/KDE/kdelibs/plasma/theme.cpp <span style="color: \
grey">(1201685)</span></li>
</ul>
<p><a href="http://svn.reviewboard.kde.org/r/6008/diff/" style="margin-left: \
3em;">View Diff</a></p>
</td>
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