Bug 90527

Summary:	Allow resting the thumb on the touchpad while moving the pointer
Product:	Wayland	Reporter:	Peter Hutterer <peter.hutterer>
Component:	libinput	Assignee:	Wayland bug list <wayland-bugs>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium	CC:	peter.hutterer
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Bug Depends on:	90528
Bug Blocks:

Description Peter Hutterer 2015-05-20 05:16:58 UTC

Follow-up from Bug 90261.

Resting the thumb on the touchpad causes scroll events when the finger is moved.

Two immediate ideas come to mind here:
* define some sort of exclusion zone on the touchpad where the thumb may come to rest, similar to software buttons
* define some maximum distance threshold for a touch to count as two-finger scroll, which would probably go hand-in-hand with Bug 90526

Ideally we could identify a thumb, but that's likely only possible on the apple touchpads.

Comment 1 Peter Hutterer 2015-07-09 02:48:27 UTC

mostly fixed with the commit below. if the thumb rests at the very edge of the touchpad, the pressure detection may not work though.


commit 3dcf28b919ae598506852b408829a6627168e803
Author: Peter Hutterer <peter.hutterer@who-t.net>
Date:   Wed May 27 18:25:49 2015 +1000

    touchpad: add pressure-based thumb-detection

Comment 2 Peter Hutterer 2015-08-05 05:18:02 UTC

commit 988f31fc4a7a6c7d0b6e20f77ea7093afd0ef37a
Merge: 5571f2d 2c78149
Author: Peter Hutterer <peter.hutterer@who-t.net>
Date:   Fri Jul 24 09:19:08 2015 +1000

    Merge branch 'thumb-detect-improvements'

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