Follow-up from Bug 90261. If clickfinger is enabled, two fingers on the touchpad cause a right click. In some cases, this is the wrong thing to do. e.g. moving the cursor with an index finger, then clicking with a thumb at the bottom of the touchpad. Observations from OS X: * a thumb press is ignored for the finger count, so thumb + 1 fg -> left, thumb + 2fg -> right * for two fingers, if they're too far apart only a single finger click is triggered * there appears to be either some zone at the bottom of the pad or some timeout so that sometimes using second finger to click won't trigger a right click. Couldn't figure out what the exact conditions were here. Not sure what the exact distances are, they seem to change with the vertical difference - East-West it's about 5-6cm, North-South it's closer to 3-4, anything else is somewhere in between.
patchset starting here: http://lists.freedesktop.org/archives/wayland-devel/2015-June/022417.html
commit df83144457176e454953d2a580a8f28e73f4a677 Author: Peter Hutterer <peter.hutterer@who-t.net> Date: Wed Jun 3 12:15:51 2015 +1000 touchpad: impose maximum distance limits on clickfingers and the follow-up: commit 8af1f4b08536ca2d74950026eb4d210142dbf6fc Author: Peter Hutterer <peter.hutterer@who-t.net> Date: Wed Jun 3 14:27:43 2015 +1000 touchpad: on non-resolution touchpads, use 30% as maximum clickfinger spread
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