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    <body><span class="vcard"><a class="email" href="mailto:wenson_hsieh&#64;apple.com" title="Wenson Hsieh &lt;wenson_hsieh&#64;apple.com&gt;"> <span class="fn">Wenson Hsieh</span></a>
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              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Use _NSScrollingPredominantAxisFilter for wheel event filtering on Mac"
   href="https://bugs.webkit.org/show_bug.cgi?id=147320">bug 147320</a>
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           <td style="text-align:right;">Attachment #257603 Flags</td>
           <td>review?
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               &nbsp;
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Use _NSScrollingPredominantAxisFilter for wheel event filtering on Mac"
   href="https://bugs.webkit.org/show_bug.cgi?id=147320#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Use _NSScrollingPredominantAxisFilter for wheel event filtering on Mac"
   href="https://bugs.webkit.org/show_bug.cgi?id=147320">bug 147320</a>
              from <span class="vcard"><a class="email" href="mailto:wenson_hsieh&#64;apple.com" title="Wenson Hsieh &lt;wenson_hsieh&#64;apple.com&gt;"> <span class="fn">Wenson Hsieh</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=257603&amp;action=diff" name="attach_257603" title="Patch">attachment 257603</a> <a href="attachment.cgi?id=257603&amp;action=edit" title="Patch">[details]</a></span>
Patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=257603&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=257603&amp;action=review</a>

<span class="quote">&gt; Source/WebCore/page/EventHandler.cpp:2791
&gt; +    FloatSize filteredDelta(-wheelEvent-&gt;deltaX(), -wheelEvent-&gt;deltaY());</span >

This is strange. The delta is passed into the filter points in the opposite direction as the delta received in this function, so this negative sign is just here for now as a hack to make unfiltered scrolling go in the right direction. I'll look into this...

<span class="quote">&gt; Source/WebCore/page/MainFrame.cpp:38
&gt; +#if PLATFORM(MAC) &amp;&amp; __MAC_OS_X_VERSION_MIN_REQUIRED &gt;= 101100</span >

^ whoops, my bad. This changes things...</pre>
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