Filter out webidl files based on special comments, and feature-gate webxr interfaces. (#34348)

* Filter out webidl files based on skip-if directives.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* script: Don't build XR functionality without webxr feature.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Fix tidy.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* script: Adjust imports for file movement.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Fix clippy.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Formatting.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Clean up webxr module import.

Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>
Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>

1 files changed, 186 insertions, 0 deletions

diff --git a/components/script/dom/webxr/xrinputsource.rs b/components/script/dom/webxr/xrinputsource.rs
new file mode 100644
index 00000000000..c7155d343d2
--- /dev/null
+++ b/components/script/dom/webxr/xrinputsource.rs
@@ -0,0 +1,186 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use dom_struct::dom_struct;
+use js::conversions::ToJSValConvertible;
+use js::jsapi::Heap;
+use js::jsval::{JSVal, UndefinedValue};
+use js::rust::MutableHandleValue;
+use script_traits::GamepadSupportedHapticEffects;
+use webxr_api::{Handedness, InputFrame, InputId, InputSource, TargetRayMode};
+
+use crate::dom::bindings::codegen::Bindings::XRInputSourceBinding::{
+    XRHandedness, XRInputSourceMethods, XRTargetRayMode,
+};
+use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
+use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
+use crate::dom::gamepad::Gamepad;
+use crate::dom::globalscope::GlobalScope;
+use crate::dom::xrhand::XRHand;
+use crate::dom::xrsession::XRSession;
+use crate::dom::xrspace::XRSpace;
+use crate::realms::enter_realm;
+use crate::script_runtime::{CanGc, JSContext};
+
+#[dom_struct]
+pub struct XRInputSource {
+    reflector: Reflector,
+    session: Dom<XRSession>,
+    #[ignore_malloc_size_of = "Defined in rust-webxr"]
+    #[no_trace]
+    info: InputSource,
+    target_ray_space: MutNullableDom<XRSpace>,
+    grip_space: MutNullableDom<XRSpace>,
+    hand: MutNullableDom<XRHand>,
+    #[ignore_malloc_size_of = "mozjs"]
+    profiles: Heap<JSVal>,
+    gamepad: DomRoot<Gamepad>,
+}
+
+impl XRInputSource {
+    pub fn new_inherited(
+        global: &GlobalScope,
+        session: &XRSession,
+        info: InputSource,
+        can_gc: CanGc,
+    ) -> XRInputSource {
+        // <https://www.w3.org/TR/webxr-gamepads-module-1/#gamepad-differences>
+        let gamepad = Gamepad::new(
+            global,
+            0,
+            "".into(),
+            "xr-standard".into(),
+            (-1.0, 1.0),
+            (0.0, 1.0),
+            GamepadSupportedHapticEffects {
+                supports_dual_rumble: false,
+                supports_trigger_rumble: false,
+            },
+            true,
+            can_gc,
+        );
+        XRInputSource {
+            reflector: Reflector::new(),
+            session: Dom::from_ref(session),
+            info,
+            target_ray_space: Default::default(),
+            grip_space: Default::default(),
+            hand: Default::default(),
+            profiles: Heap::default(),
+            gamepad,
+        }
+    }
+
+    #[allow(unsafe_code)]
+    pub fn new(
+        global: &GlobalScope,
+        session: &XRSession,
+        info: InputSource,
+        can_gc: CanGc,
+    ) -> DomRoot<XRInputSource> {
+        let source = reflect_dom_object(
+            Box::new(XRInputSource::new_inherited(global, session, info, can_gc)),
+            global,
+        );
+
+        let _ac = enter_realm(global);
+        let cx = GlobalScope::get_cx();
+        unsafe {
+            rooted!(in(*cx) let mut profiles = UndefinedValue());
+            source.info.profiles.to_jsval(*cx, profiles.handle_mut());
+            source.profiles.set(profiles.get());
+        }
+        source
+    }
+
+    pub fn id(&self) -> InputId {
+        self.info.id
+    }
+
+    pub fn session(&self) -> &XRSession {
+        &self.session
+    }
+
+    pub fn update_gamepad_state(&self, frame: InputFrame) {
+        frame
+            .button_values
+            .iter()
+            .enumerate()
+            .for_each(|(i, value)| {
+                self.gamepad.map_and_normalize_buttons(i, *value as f64);
+            });
+        frame.axis_values.iter().enumerate().for_each(|(i, value)| {
+            self.gamepad.map_and_normalize_axes(i, *value as f64);
+        });
+    }
+
+    pub fn gamepad(&self) -> &DomRoot<Gamepad> {
+        &self.gamepad
+    }
+}
+
+impl XRInputSourceMethods<crate::DomTypeHolder> for XRInputSource {
+    /// <https://immersive-web.github.io/webxr/#dom-xrinputsource-handedness>
+    fn Handedness(&self) -> XRHandedness {
+        match self.info.handedness {
+            Handedness::None => XRHandedness::None,
+            Handedness::Left => XRHandedness::Left,
+            Handedness::Right => XRHandedness::Right,
+        }
+    }
+
+    /// <https://immersive-web.github.io/webxr/#dom-xrinputsource-targetraymode>
+    fn TargetRayMode(&self) -> XRTargetRayMode {
+        match self.info.target_ray_mode {
+            TargetRayMode::Gaze => XRTargetRayMode::Gaze,
+            TargetRayMode::TrackedPointer => XRTargetRayMode::Tracked_pointer,
+            TargetRayMode::Screen => XRTargetRayMode::Screen,
+            TargetRayMode::TransientPointer => XRTargetRayMode::Transient_pointer,
+        }
+    }
+
+    /// <https://immersive-web.github.io/webxr/#dom-xrinputsource-targetrayspace>
+    fn TargetRaySpace(&self) -> DomRoot<XRSpace> {
+        self.target_ray_space.or_init(|| {
+            let global = self.global();
+            XRSpace::new_inputspace(&global, &self.session, self, false)
+        })
+    }
+
+    /// <https://immersive-web.github.io/webxr/#dom-xrinputsource-gripspace>
+    fn GetGripSpace(&self) -> Option<DomRoot<XRSpace>> {
+        if self.info.supports_grip {
+            Some(self.grip_space.or_init(|| {
+                let global = self.global();
+                XRSpace::new_inputspace(&global, &self.session, self, true)
+            }))
+        } else {
+            None
+        }
+    }
+    // https://immersive-web.github.io/webxr/#dom-xrinputsource-profiles
+    fn Profiles(&self, _cx: JSContext, mut retval: MutableHandleValue) {
+        retval.set(self.profiles.get())
+    }
+
+    /// <https://www.w3.org/TR/webxr/#dom-xrinputsource-skiprendering>
+    fn SkipRendering(&self) -> bool {
+        // Servo is not currently supported anywhere that would allow for skipped
+        // controller rendering.
+        false
+    }
+
+    /// <https://www.w3.org/TR/webxr-gamepads-module-1/#xrinputsource-interface>
+    fn GetGamepad(&self) -> Option<DomRoot<Gamepad>> {
+        Some(DomRoot::from_ref(&*self.gamepad))
+    }
+
+    // https://github.com/immersive-web/webxr-hands-input/blob/master/explainer.md
+    fn GetHand(&self) -> Option<DomRoot<XRHand>> {
+        self.info.hand_support.as_ref().map(|hand| {
+            self.hand
+                .or_init(|| XRHand::new(&self.global(), self, hand.clone()))
+        })
+    }
+}