Bug 175468

Summary: [GTK] stop kinetic scrolling when a zero movement is reached
Product: WebKit Reporter: Christian Hergert <christian>
Component: WebKitGTKAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: bugs-noreply, cgarcia, mcatanzaro
Priority: P2    
Version: Other   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch mcatanzaro: review+

Christian Hergert
Reported 2017-08-10 18:22:24 PDT
When the kinetic scrolling reduces it's speed, there can be multiple frames where the movement is zero pixels (followed by a 1 pixel movement later on). This causes a "jitter" right at the end of the scroll which makes it feel less quality than other platforms. Instead, we should just clamp it as soon as we get a zero movement. This is what I put in Gtk+ to avoid the same issue. https://git.gnome.org/browse/gtk+/commit/?h=gtk-3-22&id=4f63d839550f7a9038b391e7d3e1e6fc8bdfafa6
Attachments
Patch (2.22 KB, patch)
2017-08-11 06:33 PDT, Carlos Garcia Campos 		mcatanzaro: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Carlos Garcia Campos
Comment 1 2017-08-11 06:33:50 PDT
Created attachment 317927 [details] Patch Thank you Christian!
Carlos Garcia Campos
Comment 2 2017-08-13 23:23:43 PDT
Committed r220638: <http://trac.webkit.org/changeset/220638>
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