Bug 547 - Need smoother scrolling
Summary: Need smoother scrolling
Alias: None
Product: Xamarin Studio
Classification: Desktop
Component: Text Editor ()
Version: 2.8 Alpha 2
Hardware: PC Mac OS
: Normal normal
Target Milestone: ---
Assignee: Mike Krüger
: 1515 ()
Depends on:
Reported: 2011-08-30 14:24 UTC by Nat Friedman
Modified: 2012-01-03 14:39 UTC (History)
5 users (show)

Tags: gtk
Is this bug a regression?: ---
Last known good build:

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Description Nat Friedman 2011-08-30 14:24:03 UTC
In Gtk on mac, things seem to scroll in giant chunks. It would appear that the scroll events are coming too infrequently. By contrast, non-Gtk apps are able to scroll pixel by pixel.
Comment 1 Michael Natterer 2011-09-06 04:43:28 UTC
This is because GTK/GTK have no concept of a "scroll distance". Each scroll events scrolls by the same amount, whereas NSEvent knows about "deltaX"
and "deltaY" when it's a NSScrollWheel event.

There is an upstream patch which fixes the issue, including patching
GtkRange, attached to this bug report:


Will look into finally getting this into upstream.
Comment 3 Mike Krüger 2011-10-18 05:00:53 UTC
*** Bug 1515 has been marked as a duplicate of this bug. ***
Comment 4 Michael Natterer 2011-10-28 10:39:31 UTC
I attached a much improved version of the patch to the upstream bug.

See https://bugzilla.gnome.org/show_bug.cgi?id=516725#c29
Comment 5 Mikayla Hutchinson [MSFT] 2012-01-03 14:39:43 UTC
This should be fixed by the GTK+ version that's currently in Mono beta, so I'm marking it fixed. Please re-open if it happens with GTK+ version is 2.24.8 or later. GTK+ version can be found in the MD About dialog.