initial commit

1 files changed, 62 insertions, 0 deletions

diff --git a/src/pointer_btn.rs b/src/pointer_btn.rs
new file mode 100644
index 0000000..829fc9c
--- /dev/null
+++ b/src/pointer_btn.rs
@@ -0,0 +1,62 @@
+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)]
+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)
+    }
+}