Add methods allowing creation of X11 window with specified visual and screen

src/platform/linux/api_dispatch.rs

@@ -13,9 +13,13 @@ use api::x11;
 use api::x11::XConnection;
 use api::x11::XError;
 use api::x11::XNotSupported;
+use api::x11::ffi::XVisualInfo;
 
 #[derive(Clone, Default)]
-pub struct PlatformSpecificWindowBuilderAttributes;
+pub struct PlatformSpecificWindowBuilderAttributes {
+    pub visual_infos: Option<XVisualInfo>,
+    pub screen_id: Option<i32>,
+}
 
 enum Backend {
     X(Arc<XConnection>),
@@ -165,7 +169,7 @@ impl<'a> Iterator for WaitEventsIterator<'a> {
 
 impl Window {
     #[inline]
-    pub fn new(window: &WindowAttributes, _: &PlatformSpecificWindowBuilderAttributes)
+    pub fn new(window: &WindowAttributes, pl_attribs: &PlatformSpecificWindowBuilderAttributes)
                -> Result<Window, CreationError>
     {
         match *BACKEND {
@@ -174,7 +178,7 @@ impl Window {
             },
 
             Backend::X(ref connec) => {
-                x11::Window::new(connec, window).map(Window::X)
+                x11::Window::new(connec, window, pl_attribs).map(Window::X)
             },
 
             Backend::Error(ref error) => {