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<body><span class="vcard"><a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> <span class="fn">Peter Hutterer</span></a>
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<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - RFE: Need way to report start of finger scroll"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99415">bug 99415</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>ASSIGNED
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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - RFE: Need way to report start of finger scroll"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99415#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - RFE: Need way to report start of finger scroll"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99415">bug 99415</a>
from <span class="vcard"><a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> <span class="fn">Peter Hutterer</span></a>
</span></b>
<pre>I guess the main issue I have with this is that we can't drop the "scroll is 0
on stop" without breaking backwards compatibility, so if we send a scroll stop
event, we'd be sending the same information twice and guarantee that it always
gets ignored. Leaving it out would result in perceived asymmetrical event
stream. That's a bit unfortunate.
But otherwise, it'd be a LIBINPUT_EVENT_POINTER_AXIS_START and
LIBINPUT_EVENT_POINTER_AXIS_CANCEL, sent only for some pointer sources. The
former is relatively trivial, the latter is the one that needs the detailed
work to avoid breaking backwards compatibility.</pre>
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