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/* 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 crate::compartments::InCompartment;
use crate::dom::bindings::codegen::Bindings::VRDisplayBinding::VRDisplayMethods;
use crate::dom::bindings::codegen::Bindings::XRBinding::XRSessionMode;
use crate::dom::bindings::codegen::Bindings::XRReferenceSpaceBinding::XRReferenceSpaceType;
use crate::dom::bindings::codegen::Bindings::XRRenderStateBinding::XRRenderStateInit;
use crate::dom::bindings::codegen::Bindings::XRSessionBinding;
use crate::dom::bindings::codegen::Bindings::XRSessionBinding::XREnvironmentBlendMode;
use crate::dom::bindings::codegen::Bindings::XRSessionBinding::XRFrameRequestCallback;
use crate::dom::bindings::codegen::Bindings::XRSessionBinding::XRSessionMethods;
use crate::dom::bindings::error::Error;
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject};
use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
use crate::dom::eventtarget::EventTarget;
use crate::dom::globalscope::GlobalScope;
use crate::dom::promise::Promise;
use crate::dom::vrdisplay::VRDisplay;
use crate::dom::xrinputsource::XRInputSource;
use crate::dom::xrlayer::XRLayer;
use crate::dom::xrreferencespace::XRReferenceSpace;
use crate::dom::xrrenderstate::XRRenderState;
use crate::dom::xrspace::XRSpace;
use dom_struct::dom_struct;
use std::rc::Rc;
#[dom_struct]
pub struct XRSession {
eventtarget: EventTarget,
display: Dom<VRDisplay>,
base_layer: MutNullableDom<XRLayer>,
blend_mode: XREnvironmentBlendMode,
viewer_space: MutNullableDom<XRSpace>,
}
impl XRSession {
fn new_inherited(display: &VRDisplay) -> XRSession {
XRSession {
eventtarget: EventTarget::new_inherited(),
display: Dom::from_ref(display),
base_layer: Default::default(),
// we don't yet support any AR devices
blend_mode: XREnvironmentBlendMode::Opaque,
viewer_space: Default::default(),
}
}
pub fn new(global: &GlobalScope, display: &VRDisplay) -> DomRoot<XRSession> {
reflect_dom_object(
Box::new(XRSession::new_inherited(display)),
global,
XRSessionBinding::Wrap,
)
}
pub fn xr_present(&self, p: Rc<Promise>) {
self.display.xr_present(self, None, Some(p));
}
pub fn display(&self) -> &VRDisplay {
&self.display
}
pub fn set_layer(&self, layer: &XRLayer) {
self.base_layer.set(Some(layer))
}
}
impl XRSessionMethods for XRSession {
/// https://immersive-web.github.io/webxr/#dom-xrsession-mode
fn Mode(&self) -> XRSessionMode {
XRSessionMode::Immersive_vr
}
// https://immersive-web.github.io/webxr/#dom-xrsession-renderstate
fn RenderState(&self) -> DomRoot<XRRenderState> {
// XXXManishearth maybe cache this
XRRenderState::new(
&self.global(),
*self.display.DepthNear(),
*self.display.DepthFar(),
self.base_layer.get().as_ref().map(|l| &**l),
)
}
/// https://immersive-web.github.io/webxr/#dom-xrsession-requestanimationframe
fn UpdateRenderState(&self, init: &XRRenderStateInit, comp: InCompartment) -> Rc<Promise> {
let p = Promise::new_in_current_compartment(&self.global(), comp);
self.display.queue_renderstate(init, p.clone());
p
}
/// https://immersive-web.github.io/webxr/#dom-xrsession-requestanimationframe
fn RequestAnimationFrame(&self, callback: Rc<XRFrameRequestCallback>) -> i32 {
self.display.xr_raf(callback) as i32
}
/// https://immersive-web.github.io/webxr/#dom-xrsession-cancelanimationframe
fn CancelAnimationFrame(&self, frame: i32) {
self.display.xr_cancel_raf(frame)
}
/// https://immersive-web.github.io/webxr/#dom-xrsession-environmentblendmode
fn EnvironmentBlendMode(&self) -> XREnvironmentBlendMode {
self.blend_mode
}
/// https://immersive-web.github.io/webxr/#dom-xrsession-requestreferencespace
fn RequestReferenceSpace(&self, ty: XRReferenceSpaceType, comp: InCompartment) -> Rc<Promise> {
let p = Promise::new_in_current_compartment(&self.global(), comp);
// https://immersive-web.github.io/webxr/#create-a-reference-space
// XXXManishearth reject based on session type
// https://github.com/immersive-web/webxr/blob/master/spatial-tracking-explainer.md#practical-usage-guidelines
match ty {
XRReferenceSpaceType::Bounded_floor | XRReferenceSpaceType::Unbounded => {
// XXXManishearth eventually support these
p.reject_error(Error::NotSupported)
},
ty => {
p.resolve_native(&XRReferenceSpace::new(&self.global(), self, ty));
},
}
p
}
/// https://immersive-web.github.io/webxr/#dom-xrsession-getinputsources
fn GetInputSources(&self) -> Vec<DomRoot<XRInputSource>> {
self.display.get_input_sources()
}
}
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