From 28dff81dbf3f24ae470e1a0004f0813a3247e08f Mon Sep 17 00:00:00 2001
From: Manish Goregaokar <manishsmail@gmail.com>
Date: Fri, 21 Dec 2018 15:20:51 -0800
Subject: Fill in XR frame/pose/view implementations

---
 components/script/dom/xrframe.rs | 45 +++++++++++++++++++++++++++++++++++-----
 1 file changed, 40 insertions(+), 5 deletions(-)

(limited to 'components/script/dom/xrframe.rs')

diff --git a/components/script/dom/xrframe.rs b/components/script/dom/xrframe.rs
index b7b8f7e0964..2430c1a3812 100644
--- a/components/script/dom/xrframe.rs
+++ b/components/script/dom/xrframe.rs
@@ -3,28 +3,63 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 use crate::dom::bindings::codegen::Bindings::XRFrameBinding;
-use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
-use crate::dom::bindings::root::DomRoot;
+use crate::dom::bindings::codegen::Bindings::XRFrameBinding::XRFrameMethods;
+use crate::dom::bindings::codegen::Bindings::XRViewBinding::XREye;
+use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
+use crate::dom::bindings::root::{Dom, DomRoot};
 use crate::dom::globalscope::GlobalScope;
+use crate::dom::xrreferencespace::XRReferenceSpace;
+use crate::dom::xrsession::XRSession;
+use crate::dom::xrview::XRView;
+use crate::dom::xrviewerpose::XRViewerPose;
 use dom_struct::dom_struct;
+use webvr_traits::WebVRFrameData;
 
 #[dom_struct]
 pub struct XRFrame {
     reflector_: Reflector,
+    session: Dom<XRSession>,
+    #[ignore_malloc_size_of = "defined in rust-webvr"]
+    data: WebVRFrameData,
 }
 
 impl XRFrame {
-    fn new_inherited() -> XRFrame {
+    fn new_inherited(session: &XRSession, data: WebVRFrameData) -> XRFrame {
         XRFrame {
             reflector_: Reflector::new(),
+            session: Dom::from_ref(session),
+            data,
         }
     }
 
-    pub fn new(global: &GlobalScope) -> DomRoot<XRFrame> {
+    pub fn new(
+        global: &GlobalScope,
+        session: &XRSession,
+        data: WebVRFrameData,
+    ) -> DomRoot<XRFrame> {
         reflect_dom_object(
-            Box::new(XRFrame::new_inherited()),
+            Box::new(XRFrame::new_inherited(session, data)),
             global,
             XRFrameBinding::Wrap,
         )
     }
 }
+
+impl XRFrameMethods for XRFrame {
+    fn Session(&self) -> DomRoot<XRSession> {
+        DomRoot::from_ref(&self.session)
+    }
+
+    fn GetViewerPose(&self, reference: Option<&XRReferenceSpace>) -> Option<DomRoot<XRViewerPose>> {
+        // We assume the reference space is eye level for now
+        // since it's the only one 3DOF devices support
+        if reference.is_some() {
+            // it's not possible to obtain a reference
+            // space at all yet
+            return None;
+        }
+        let left = XRView::new(&self.global(), &self.session, XREye::Left, &self.data);
+        let right = XRView::new(&self.global(), &self.session, XREye::Right, &self.data);
+        Some(XRViewerPose::new(&self.global(), &left, &right))
+    }
+}
-- 
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