diff options
Diffstat (limited to 'src/evdev-wheel.c')
| -rw-r--r-- | src/evdev-wheel.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/evdev-wheel.c b/src/evdev-wheel.c index 2381cb77..13efece6 100644 --- a/src/evdev-wheel.c +++ b/src/evdev-wheel.c @@ -323,6 +323,21 @@ wheel_handle_direction_change(struct fallback_dispatch *dispatch, } } +static void +fallback_rotate_wheel(struct fallback_dispatch *dispatch, + struct evdev_device *device, + struct input_event *e) +{ + /* Special case: if we're upside down (-ish), + * swap the direction of the wheels so that user-down + * means scroll down. This isn't done for any other angle + * since it's not clear what the heuristics should be.*/ + if (dispatch->rotation.angle >= 160.0 && + dispatch->rotation.angle <= 220.0) { + e->value *= -1; + } +} + void fallback_wheel_process_relative(struct fallback_dispatch *dispatch, struct evdev_device *device, @@ -330,6 +345,7 @@ fallback_wheel_process_relative(struct fallback_dispatch *dispatch, { switch (e->code) { case REL_WHEEL: + fallback_rotate_wheel(dispatch, device, e); dispatch->wheel.lo_res.y += e->value; if (dispatch->wheel.emulate_hi_res_wheel) dispatch->wheel.hi_res.y += e->value * 120; @@ -337,6 +353,7 @@ fallback_wheel_process_relative(struct fallback_dispatch *dispatch, wheel_handle_event(dispatch, WHEEL_EVENT_SCROLL, time); break; case REL_HWHEEL: + fallback_rotate_wheel(dispatch, device, e); dispatch->wheel.lo_res.x += e->value; if (dispatch->wheel.emulate_hi_res_wheel) dispatch->wheel.hi_res.x += e->value * 120; @@ -344,6 +361,7 @@ fallback_wheel_process_relative(struct fallback_dispatch *dispatch, wheel_handle_event(dispatch, WHEEL_EVENT_SCROLL, time); break; case REL_WHEEL_HI_RES: + fallback_rotate_wheel(dispatch, device, e); dispatch->wheel.hi_res.y += e->value; dispatch->wheel.hi_res_event_received = true; dispatch->pending_event |= EVDEV_WHEEL; @@ -351,6 +369,7 @@ fallback_wheel_process_relative(struct fallback_dispatch *dispatch, wheel_handle_event(dispatch, WHEEL_EVENT_SCROLL, time); break; case REL_HWHEEL_HI_RES: + fallback_rotate_wheel(dispatch, device, e); dispatch->wheel.hi_res.x += e->value; dispatch->wheel.hi_res_event_received = true; dispatch->pending_event |= EVDEV_WHEEL; |