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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/106523/">http://git.reviewboard.kde.org/r/106523/</a>
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<p style="margin-top: 0;">On September 21st, 2012, 11:38 a.m., <b>Ben Cooksley</b> wrote:</p>
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<a href="http://git.reviewboard.kde.org/r/106523/diff/1/?file=86653#file86653line51" style="color: black; font-weight: bold; text-decoration: underline;">systemsettings/icons/CategorizedView.cpp</a>
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(Diff revision 1)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void CategorizedView::wheelEvent(QWheelEvent* event)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">verticalScrollBar</span><span class="p">()</span><span class="o">-></span><span class="n">setSingleStep</span><span class="p">(</span><span class="mi">10</span><span class="p">);</span></pre></td>
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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;">I don't know the specifics of the bug which is being worked around, but would it not be more efficient to set the singleStep property once, in the CategorizedView constructor?</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The bug is that inside QAbstractItemView the singleStep is changed by the QAbstractItemView whenever updateGeometries is called (so any window resize etc). It's a pretty silly bug. Hence we have to (re-)set it each time just before we use it.
I'll try and get the proper patch merged upstream too, so we can remove this when Qt5 comes out.
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<p>- David</p>
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<p>On September 21st, 2012, 11:26 a.m., David Edmundson wrote:</p>
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<div>Review request for Plasma.</div>
<div>By David Edmundson.</div>
<p style="color: grey;"><i>Updated Sept. 21, 2012, 11:26 a.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<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;">Smooth scroll by mousewheel in SystemSettings
Work around a bug in Qt, where ScrollByPixel does not work, which makes scrolling in a view with large delegates very jumpy/difficult.
(the same work around is also used in many other places in KDE, older dolphin, gwenview, knewstuff3..)</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>systemsettings/icons/CategorizedView.h <span style="color: grey">(f2b064f)</span></li>
<li>systemsettings/icons/CategorizedView.cpp <span style="color: grey">(1a2a1d9)</span></li>
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<p><a href="http://git.reviewboard.kde.org/r/106523/diff/" style="margin-left: 3em;">View Diff</a></p>
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