Added fullscreen support for X11

src/lib.rs

@@ -58,6 +58,7 @@ pub struct WindowBuilder {
     title: String,
     monitor: Option<winimpl::MonitorID>,
     gl_version: Option<(uint, uint)>,
+    is_fullscreen: bool,
 }
 
 impl WindowBuilder {
@@ -68,6 +69,7 @@ impl WindowBuilder {
             title: "gl-init-rs window".to_string(),
             monitor: None,
             gl_version: None,
+            is_fullscreen: false,
         }
     }
 
@@ -91,6 +93,7 @@ impl WindowBuilder {
     pub fn with_fullscreen(mut self, monitor: MonitorID) -> WindowBuilder {
         let MonitorID(monitor) = monitor;
         self.monitor = Some(monitor);
+        self.is_fullscreen = true;
         self
     }