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use serde::{Serialize, Serializer};
// From linux/input-event-codes.h
const BTN_LEFT: u32 = 0x110;
const BTN_RIGHT: u32 = 0x111;
const BTN_MIDDLE: u32 = 0x112;
// const BTN_SIDE: u32 = 0x113;
// const BTN_EXTRA: u32 = 0x114;
const BTN_FORWARD: u32 = 0x115;
const BTN_BACK: u32 = 0x116;
// const BTN_TASK: u32 = 0x117;
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum PointerBtn {
Left,
Middle,
Right,
Forward,
WheelUp,
WheelDown,
Back,
Unknown,
}
impl Default for PointerBtn {
fn default() -> Self {
Self::Unknown
}
}
impl From<u32> for PointerBtn {
fn from(code: u32) -> Self {
use PointerBtn::*;
match code {
BTN_LEFT => Left,
BTN_MIDDLE => Middle,
BTN_RIGHT => Right,
BTN_FORWARD => Forward,
BTN_BACK => Back,
_ => Unknown,
}
}
}
impl Serialize for PointerBtn {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
let num = match *self {
PointerBtn::Left => 1,
PointerBtn::Middle => 2,
PointerBtn::Right => 3,
PointerBtn::WheelUp => 4,
PointerBtn::WheelDown => 5,
PointerBtn::Forward => 9,
PointerBtn::Back => 8,
PointerBtn::Unknown => 0,
};
serializer.serialize_u8(num)
}
}
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