Write documentation for input

src/input/button_state.rs

@@ -1,5 +1,9 @@
+/// The state of a button.
 #[derive(Debug, Hash, Ord, PartialOrd, PartialEq, Eq, Clone, Copy)]
 pub enum ButtonState {
+    /// The button is pressed.
     Pressed,
+
+    /// The button is __not__ pressed.
     Released,
 }

src/input/keyboard.rs

@@ -1,3 +1,4 @@
+//! Build keyboard events.
 mod event;
 mod key_code;
 

src/input/mouse.rs

@@ -1,3 +1,4 @@
+//! Build mouse events.
 mod button;
 mod event;
 

src/input/mouse/button.rs

@@ -1,7 +1,15 @@
+/// The button of a mouse.
 #[derive(Debug, Hash, PartialEq, Eq, Clone, Copy)]
 pub enum Button {
+    /// The left mouse button.
     Left,
+
+    /// The right mouse button.
     Right,
+
+    /// The middle (wheel) button.
     Middle,
+
+    /// Some other button.
     Other(u8),
 }