Previously, any lower finger spaced more than the vertical threshold apart
would be labelled as thumb. This causes some taps to be detected as
single-taps, particularly where the user's hand is at an angle that causes the
touches to be effectively vertical.
Restructure that condition so that we only go for a thumb if we're
distinctively apart, and we only *not* go for thumb if we're distinctively
close together.
Fixes#359
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Instead of a simple yes/no/maybe for thumbs, have a more extensive state
machine that keeps track of the thumb. Since we only support one thumb anyway,
the tracking moves to the tp_dispatch struct.
Test case changes:
touchpad_clickfinger_3fg_tool_position:
with better thumb detection we can now handle this properly and expect a
right button (2fg) press for the test case
touchpad_thumb_no_doublethumb_with_timeout:
two thumbs are now always two fingers, so let's switch to axis events here
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
No functional changes, just prep work for a later patch where the thumbs will
dynamically update their state (instead of just using yes/no/maybe).
Extracted from Matt Mayfield's thumb detection patches.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This moves the thumb state logging directly into that helper function too.
Extracted from Matt Mayfield's thumb detection patches.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
