Nicer bindings for Key(val) related functions

Fix #345

src/enums.rs

@@ -5,6 +5,8 @@
 #[allow(non_upper_case_globals)]
 pub mod key {
     use gdk_sys;
+    use glib::GString;
+    use keys;
 
     pub type Key = u32;
 
@@ -2280,4 +2282,19 @@ pub mod key {
     pub const Prev_VMode: Key = gdk_sys::GDK_KEY_Prev_VMode as u32;
     pub const LogWindowTree: Key = gdk_sys::GDK_KEY_LogWindowTree as u32;
     pub const LogGrabInfo: Key = gdk_sys::GDK_KEY_LogGrabInfo as u32;
+
+    pub trait Keys {
+        fn to_unicode(self) -> Option<char>;
+        fn name(self) -> Option<GString>;
+    }
+
+    impl Keys for Key {
+        fn to_unicode(self) -> Option<char> {
+            keys::keyval_to_unicode(self as u32)
+        }
+
+        fn name(self) -> Option<GString> {
+            keys::keyval_name(self as u32)
+        }
+    }
 }

tests/check_event.rs

@@ -0,0 +1,24 @@
+extern crate gdk;
+extern crate gdk_sys;
+
+use gdk::enums::key::Keys;
+
+#[test]
+fn check_event() {
+    gdk::init();
+    let base_ev = gdk::Event::new(gdk::EventType::KeyPress);
+    let mut ev: gdk::EventKey = base_ev.downcast().unwrap();
+    ev.as_mut().keyval = gdk::enums::key::A;
+
+    let keyval = gdk::keyval_to_unicode(ev.get_keyval());
+    let keyval2 = ev.get_keyval().to_unicode();
+
+    assert_eq!(keyval, Some('A'));
+    assert_eq!(keyval, keyval2);
+
+    let name = gdk::keyval_name(ev.get_keyval());
+    let name2 = ev.get_keyval().name();
+
+    assert_eq!(name, Some("A".into()));
+    assert_eq!(name, name2);
+}