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List: kde-panel-devel
Subject: Re: Review Request: Plasma::Svg: Do not require exact match for size
From: "Marco Martin" <notmart () gmail ! com>
Date: 2010-10-28 15:53:44
Message-ID: 20101028155344.1253.13437 () vidsolbach ! de
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Ship it!
I'm still not sure wether this will be fast enough, but let's try it
/trunk/KDE/kdelibs/plasma/svg.cpp
<http://svn.reviewboard.kde.org/r/5689/#comment8729>
instead of the rounding error prone aspect ratio compare i think comparing width \
>= our width AND height >= our height could be good enough (provided the theme author \
> doesn't provide crazy stuff)
/trunk/KDE/kdelibs/plasma/svg.cpp
<http://svn.reviewboard.kde.org/r/5689/#comment8728>
>=
- Marco
On 2010-10-27 22:05:50, Ingomar Wesp wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://svn.reviewboard.kde.org/r/5689/
> -----------------------------------------------------------
>
> (Updated 2010-10-27 22:05:50)
>
>
> Review request for Plasma.
>
>
> Summary
> -------
>
> Previously, if an SVG contained size hinted elements, they were only used when the \
> display size matched the size hint exactly. This patch tries to relax this \
> condition by searching for the smallest size hinted element that is still bigger \
> than the display size (in order for the element to be chosen, it also has to have \
> the same aspect ratio). If no such element can be found, it falls back to the \
> normal element id as passed.
> In order to speed up the lookup (and because it appears to be impossible to access \
> the DOM of an already loaded SvgRenderer), all size hinted element ids are stored \
> in SharedSvgRenderer at load time.
> I think it would be good to change the QRegExp based id fetching into a proper DOM \
> traversal. Are there any convenience functions in KDELibs that allow easy iterating \
> over all elements (couldn't find any) or do I have to implement that myself based \
> on Qt's DOM classes?
> Please tell me what you think... Have I missed something?
>
>
> Diffs
> -----
>
> /trunk/KDE/kdelibs/plasma/private/svg_p.h 1189821
> /trunk/KDE/kdelibs/plasma/svg.cpp 1189821
> /trunk/KDE/kdelibs/plasma/theme.h 1189821
> /trunk/KDE/kdelibs/plasma/theme.cpp 1189821
>
> Diff: http://svn.reviewboard.kde.org/r/5689/diff
>
>
> Testing
> -------
>
>
> Thanks,
>
> Ingomar
>
>
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This is an automatically generated e-mail. To reply, visit:
<a href="http://svn.reviewboard.kde.org/r/5689/">http://svn.reviewboard.kde.org/r/5689/</a>
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<p>Ship it!</p>
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I'm still not sure \
wether this will be fast enough, but let's try it</pre> <br />
<div>
<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://svn.reviewboard.kde.org/r/5689/diff/6/?file=40329#file40329line292" \
style="color: black; font-weight: bold; text-decoration: \
underline;">/trunk/KDE/kdelibs/plasma/svg.cpp</a> <span style="font-weight: \
normal;">
(Diff revision 6)
</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; ">Theme \
*SvgPrivate::actualTheme()</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">292</font></th> <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> \
<span class="c1">// the rounding errors caused by snap-to-integer \
scaling.</span></pre></td> </tr>
</tbody>
</table>
<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;">instead of \
the rounding error prone aspect ratio compare i think comparing width >= our width \
AND height >= our height could be good enough (provided the theme author \
doesn't provide crazy stuff)</pre> </div>
<br />
<div>
<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://svn.reviewboard.kde.org/r/5689/diff/6/?file=40329#file40329line294" \
style="color: black; font-weight: bold; text-decoration: \
underline;">/trunk/KDE/kdelibs/plasma/svg.cpp</a> <span style="font-weight: \
normal;">
(Diff revision 6)
</span>
</th>
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</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; ">Theme \
*SvgPrivate::actualTheme()</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">294</font></th> <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> \
<span class="p">(</span><span class="o">!</span><span class="n">bestFit</span><span \
class="p">.</span><span class="n">isValid</span><span class="p">()</span> <span \
class="o">||</span> <span class="n">bestFit</span><span class="p">.</span><span \
class="n">width</span><span class="p">()</span> <span class="o">></span> <span \
class="n">currentHint</span><span class="p">.</span><span class="n">width</span><span \
class="p">())</span> <span class="o">&&</span></pre></td> </tr>
</tbody>
</table>
<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;">>=</pre> \
</div> <br />
<p>- Marco</p>
<br />
<p>On October 27th, 2010, 10:05 p.m., Ingomar Wesp wrote:</p>
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<div>Review request for Plasma.</div>
<div>By Ingomar Wesp.</div>
<p style="color: grey;"><i>Updated 2010-10-27 22:05:50</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;">Previously, if an SVG contained size hinted elements, they were only \
used when the display size matched the size hint exactly. This patch tries to relax \
this condition by searching for the smallest size hinted element that is still bigger \
than the display size (in order for the element to be chosen, it also has to have the \
same aspect ratio). If no such element can be found, it falls back to the normal \
element id as passed.
In order to speed up the lookup (and because it appears to be impossible to access \
the DOM of an already loaded SvgRenderer), all size hinted element ids are stored in \
SharedSvgRenderer at load time.
I think it would be good to change the QRegExp based id fetching into a proper DOM \
traversal. Are there any convenience functions in KDELibs that allow easy iterating \
over all elements (couldn't find any) or do I have to implement that myself based \
on Qt's DOM classes?
Please tell me what you think... Have I missed something?</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">(1189821)</span></li>
<li>/trunk/KDE/kdelibs/plasma/svg.cpp <span style="color: \
grey">(1189821)</span></li>
<li>/trunk/KDE/kdelibs/plasma/theme.h <span style="color: \
grey">(1189821)</span></li>
<li>/trunk/KDE/kdelibs/plasma/theme.cpp <span style="color: \
grey">(1189821)</span></li>
</ul>
<p><a href="http://svn.reviewboard.kde.org/r/5689/diff/" style="margin-left: \
3em;">View Diff</a></p>
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