<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>232991</bug_id>
          
          <creation_ts>2021-11-11 04:11:46 -0800</creation_ts>
          <short_desc>[GTK] Support the &quot;begin&quot; phase for touchpad gestures</short_desc>
          <delta_ts>2021-11-23 23:28:21 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Scrolling</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          <see_also>https://bugs.webkit.org/show_bug.cgi?id=232376</see_also>
    
    <see_also>https://bugs.webkit.org/show_bug.cgi?id=232992</see_also>
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Chris Lord">clord</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>alicem</cc>
    
    <cc>simon.fraser</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1813983</commentid>
    <comment_count>0</comment_count>
    <who name="Chris Lord">clord</who>
    <bug_when>2021-11-11 04:11:46 -0800</bug_when>
    <thetext>Since Gdk 3.18, swipe gestures have been supported that give us proper event phases (as opposed to just continue and end). Given we ask for a minimum of 3.22, we should take advantage of these to provide proper event phases, which would help us improve scrolling behaviour.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1817581</commentid>
    <comment_count>1</comment_count>
    <who name="Alice Mikhaylenko">alicem</who>
    <bug_when>2021-11-23 23:28:21 -0800</bug_when>
    <thetext>Note that for scrolling begin events are synthesized with the first update event, and on GTK level - not even libinput. So I don&apos;t think it would improve much in practice.

This should get improved a lot when GTK gets hold gesture support though - then it should be possible to stop kinetic scrolling as soon as fingers are down instead when they are first moved.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>