Add keyboard support

glut.rs

@@ -9,7 +9,9 @@
 
 /* automatically generated by rust-bindgen */
 
-use glut::bindgen::{glutCreateWindow, glutDestroyWindow, glutDisplayFunc, glutMouseFunc, glutMotionFunc, glutPassiveMotionFunc, glutGet, glutGetWindow};
+use glut::bindgen::{glutCreateWindow, glutDestroyWindow, glutDisplayFunc, glutMouseFunc};
+use glut::bindgen::{glutKeyboardFunc, glutGetModifiers, glutMotionFunc, glutPassiveMotionFunc};
+use glut::bindgen::{glutGet, glutGetWindow};
 use glut::bindgen::{glutInit, glutInitDisplayMode, glutPostRedisplay, glutReshapeFunc};
 use glut::bindgen::{glutReshapeWindow, glutSetWindow, glutSwapBuffers, glutTimerFunc};
 use core::libc::*;
@@ -46,6 +48,10 @@ pub struct Window(c_int);
 
 pub static DOUBLE: c_uint = 2 as c_uint;
 
+pub static ACTIVE_SHIFT: c_int = 1;
+pub static ACTIVE_CTRL: c_int = 2;
+pub static ACTIVE_ALT: c_int = 4;
+
 static WINDOW_WIDTH: GLenum = 102;
 static WINDOW_HEIGHT: GLenum = 103;
 
@@ -117,6 +123,24 @@ pub fn display_func(callback: @fn()) {
     }
 }
 
+pub fn keyboard_callback_tls_key(_: @@fn(key: c_uchar, x: c_int, y: c_int)) {
+    // Empty.
+}
+
+pub extern fn keyboard_callback(key: c_uchar, x: c_int, y: c_int) {
+    unsafe {
+        let callback = local_data_get(keyboard_callback_tls_key).get();
+        (*callback)(key, x, y)
+    }
+}
+
+pub fn keyboard_func(callback: @fn(key: c_uchar, x: c_int, y: c_int)) {
+    unsafe {
+        local_data_set(keyboard_callback_tls_key, @callback);
+        glutKeyboardFunc(keyboard_callback);
+    }
+}
+
 pub fn mouse_callback_tls_key(_callback: @@fn(button: c_int, state: c_int, x: c_int, y: c_int)) {
     // Empty.
 }
@@ -262,6 +286,12 @@ pub fn get(state: State) -> c_int {
     }
 }
 
+pub fn get_modifiers() -> c_int {
+    unsafe {
+        glutGetModifiers()
+    }
+}
+
 #[cfg(target_os="macos")]
 #[nolink]
 #[link_args="-framework GLUT"]