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It is possible for a click to get reported before any related touch events get reported, here is the relevant part of an evemu-record session on a T440s: E: 3.985585 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- E: 3.997419 0003 0039 -001 # EV_ABS / ABS_MT_TRACKING_ID -1 E: 3.997419 0001 014a 0000 # EV_KEY / BTN_TOUCH 0 E: 3.997419 0003 0018 0000 # EV_ABS / ABS_PRESSURE 0 E: 3.997419 0001 0145 0000 # EV_KEY / BTN_TOOL_FINGER 0 E: 3.997419 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- E: 5.117881 0001 0110 0001 # EV_KEY / BTN_LEFT 1 E: 5.117881 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- E: 5.133422 0003 0039 0187 # EV_ABS / ABS_MT_TRACKING_ID 187 E: 5.133422 0003 0035 3098 # EV_ABS / ABS_MT_POSITION_X 3098 E: 5.133422 0003 0036 3282 # EV_ABS / ABS_MT_POSITION_Y 3282 E: 5.133422 0003 003a 0046 # EV_ABS / ABS_MT_PRESSURE 46 E: 5.133422 0001 014a 0001 # EV_KEY / BTN_TOUCH 1 E: 5.133422 0003 0000 3102 # EV_ABS / ABS_X 3102 E: 5.133422 0003 0001 3282 # EV_ABS / ABS_Y 3282 E: 5.133422 0003 0018 0046 # EV_ABS / ABS_PRESSURE 46 E: 5.133422 0001 0145 0001 # EV_KEY / BTN_TOOL_FINGER 1 E: 5.133422 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- Notice the BTN_LEFT event all by itself! To deal with this if a physical click registers before we get any touches, wait for the first touch to resolve the click. Also see the new activity diagram for the tp_post_softbutton_buttons method which has been added to doc/touchpad-softbutton-state-machine.svg Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> |
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| .. | ||
| libinput.doxygen.in | ||
| Makefile.am | ||
| touchpad-softbutton-state-machine.svg | ||
| touchpad-tap-state-machine.svg | ||
