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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::dom::bindings::cell::DomRefCell;
use crate::dom::bindings::codegen::Bindings::XRRenderStateBinding::XRRenderStateMethods;
use crate::dom::bindings::codegen::UnionTypes::XRWebGLLayerOrXRLayer as RootedXRWebGLLayerOrXRLayer;
use crate::dom::bindings::num::Finite;
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
use crate::dom::globalscope::GlobalScope;
use crate::dom::xrlayer::XRLayer;
use crate::dom::xrwebgllayer::XRWebGLLayer;
use dom_struct::dom_struct;
use std::cell::Cell;
use webxr_api::SwapChainId;
#[dom_struct]
pub struct XRRenderState {
reflector_: Reflector,
depth_near: Cell<f64>,
depth_far: Cell<f64>,
inline_vertical_fov: Cell<Option<f64>>,
layer: MutNullableDom<XRWebGLLayer>,
layers: DomRefCell<Vec<XRWebGLLayerOrXRLayer>>,
}
#[unrooted_must_root_lint::must_root]
#[derive(Clone, JSTraceable, MallocSizeOf)]
pub enum XRWebGLLayerOrXRLayer {
XRWebGLLayer(Dom<XRWebGLLayer>),
XRLayer(Dom<XRLayer>),
}
impl XRWebGLLayerOrXRLayer {
#[allow(unrooted_must_root)]
fn from_ref(layer: &RootedXRWebGLLayerOrXRLayer) -> XRWebGLLayerOrXRLayer {
match layer {
RootedXRWebGLLayerOrXRLayer::XRWebGLLayer(ref layer) => {
XRWebGLLayerOrXRLayer::XRWebGLLayer(Dom::from_ref(layer))
},
RootedXRWebGLLayerOrXRLayer::XRLayer(ref layer) => {
XRWebGLLayerOrXRLayer::XRLayer(Dom::from_ref(layer))
},
}
}
pub fn swap_chain_id(&self) -> Option<SwapChainId> {
match self {
XRWebGLLayerOrXRLayer::XRWebGLLayer(layer) => Some(layer.swap_chain_id()),
XRWebGLLayerOrXRLayer::XRLayer(_) => None,
}
}
pub fn swap_buffers(&self) {
match self {
XRWebGLLayerOrXRLayer::XRWebGLLayer(layer) => layer.swap_buffers(),
XRWebGLLayerOrXRLayer::XRLayer(_) => (),
}
}
}
impl XRRenderState {
pub fn new_inherited(
depth_near: f64,
depth_far: f64,
inline_vertical_fov: Option<f64>,
layer: Option<&XRWebGLLayer>,
layers: &[XRWebGLLayerOrXRLayer],
) -> XRRenderState {
debug_assert!(layer.is_none() || layers.is_empty());
XRRenderState {
reflector_: Reflector::new(),
depth_near: Cell::new(depth_near),
depth_far: Cell::new(depth_far),
inline_vertical_fov: Cell::new(inline_vertical_fov),
layer: MutNullableDom::new(layer),
layers: DomRefCell::new(layers.iter().cloned().collect()),
}
}
pub fn new(
global: &GlobalScope,
depth_near: f64,
depth_far: f64,
inline_vertical_fov: Option<f64>,
layer: Option<&XRWebGLLayer>,
layers: &[XRWebGLLayerOrXRLayer],
) -> DomRoot<XRRenderState> {
reflect_dom_object(
Box::new(XRRenderState::new_inherited(
depth_near,
depth_far,
inline_vertical_fov,
layer,
layers,
)),
global,
)
}
pub fn clone_object(&self) -> DomRoot<Self> {
let layers = self.layers.borrow();
XRRenderState::new(
&self.global(),
self.depth_near.get(),
self.depth_far.get(),
self.inline_vertical_fov.get(),
self.layer.get().as_ref().map(|x| &**x),
&layers,
)
}
pub fn set_depth_near(&self, depth: f64) {
self.depth_near.set(depth)
}
pub fn set_depth_far(&self, depth: f64) {
self.depth_far.set(depth)
}
pub fn set_inline_vertical_fov(&self, fov: f64) {
debug_assert!(self.inline_vertical_fov.get().is_some());
self.inline_vertical_fov.set(Some(fov))
}
pub fn set_layer(&self, layer: Option<&XRWebGLLayer>) {
self.layer.set(layer)
}
pub fn set_layers(&self, layers: &[RootedXRWebGLLayerOrXRLayer]) {
*self.layers.borrow_mut() = layers.iter().map(XRWebGLLayerOrXRLayer::from_ref).collect();
}
pub fn with_layers<F, R>(&self, f: F) -> R
where
F: FnOnce(&[XRWebGLLayerOrXRLayer]) -> R,
{
let layers = self.layers.borrow();
f(&*layers)
}
pub fn has_layer(&self) -> bool {
self.layer.get().is_some() || !self.layers.borrow().is_empty()
}
}
impl XRRenderStateMethods for XRRenderState {
/// https://immersive-web.github.io/webxr/#dom-xrrenderstate-depthnear
fn DepthNear(&self) -> Finite<f64> {
Finite::wrap(self.depth_near.get())
}
/// https://immersive-web.github.io/webxr/#dom-xrrenderstate-depthfar
fn DepthFar(&self) -> Finite<f64> {
Finite::wrap(self.depth_far.get())
}
/// https://immersive-web.github.io/webxr/#dom-xrrenderstate-inlineverticalfieldofview
fn GetInlineVerticalFieldOfView(&self) -> Option<Finite<f64>> {
self.inline_vertical_fov.get().map(Finite::wrap)
}
/// https://immersive-web.github.io/webxr/#dom-xrrenderstate-baselayer
fn GetBaseLayer(&self) -> Option<DomRoot<XRWebGLLayer>> {
self.layer.get()
}
}
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