From 4b2fdd0776485fcf9f560c72e98c00dff318f9e7 Mon Sep 17 00:00:00 2001 From: Ivan Molodetskikh Date: Fri, 22 Mar 2024 13:05:05 +0400 Subject: Implement mouse wheel bindings --- src/wheel_tracker.rs | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 src/wheel_tracker.rs (limited to 'src/wheel_tracker.rs') diff --git a/src/wheel_tracker.rs b/src/wheel_tracker.rs new file mode 100644 index 00000000..0163548a --- /dev/null +++ b/src/wheel_tracker.rs @@ -0,0 +1,36 @@ +pub struct WheelTracker { + last: f64, + acc: f64, +} + +impl WheelTracker { + #[allow(clippy::new_without_default)] + pub fn new() -> Self { + Self { last: 0., acc: 0. } + } + + pub fn accumulate(&mut self, amount_v120: f64) -> i8 { + let changed_direction = + (self.last > 0. && amount_v120 < 0.) || (self.last < 0. && amount_v120 > 0.); + if changed_direction { + self.acc = 0. + } + + self.last = amount_v120; + self.acc += amount_v120; + + let mut ticks = 0; + if self.acc.abs() >= 120. { + let clamped = self.acc.clamp(-127. * 120., 127. * 120.); + ticks = (clamped as i16 / 120) as i8; + self.acc %= 120.; + } + + ticks + } + + pub fn reset(&mut self) { + self.last = 0.; + self.acc = 0.; + } +} -- cgit