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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 canvas_traits::webgl::WebGLContextId;
use dom_struct::dom_struct;
use webxr_api::LayerId;
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::root::Dom;
use crate::dom::eventtarget::EventTarget;
use crate::dom::webglrenderingcontext::WebGLRenderingContext;
use crate::dom::xrframe::XRFrame;
use crate::dom::xrsession::XRSession;
use crate::dom::xrwebgllayer::XRWebGLLayer;
#[dom_struct]
pub struct XRLayer {
event_target: EventTarget,
session: Dom<XRSession>,
context: Dom<WebGLRenderingContext>,
/// If none, the session is inline (the composition disabled flag is true)
/// and this is a XRWebGLLayer.
#[ignore_malloc_size_of = "Layer ids don't heap-allocate"]
#[no_trace]
layer_id: Option<LayerId>,
}
impl XRLayer {
#[allow(dead_code)]
pub fn new_inherited(
session: &XRSession,
context: &WebGLRenderingContext,
layer_id: Option<LayerId>,
) -> XRLayer {
XRLayer {
event_target: EventTarget::new_inherited(),
session: Dom::from_ref(session),
context: Dom::from_ref(context),
layer_id,
}
}
pub(crate) fn layer_id(&self) -> Option<LayerId> {
self.layer_id
}
pub(crate) fn context_id(&self) -> WebGLContextId {
self.context.context_id()
}
pub(crate) fn context(&self) -> &WebGLRenderingContext {
&self.context
}
pub(crate) fn session(&self) -> &XRSession {
&self.session
}
pub fn begin_frame(&self, frame: &XRFrame) -> Option<()> {
// TODO: Implement this for other layer types
if let Some(this) = self.downcast::<XRWebGLLayer>() {
this.begin_frame(frame)
} else {
unimplemented!()
}
}
pub fn end_frame(&self, frame: &XRFrame) -> Option<()> {
// TODO: Implement this for other layer types
if let Some(this) = self.downcast::<XRWebGLLayer>() {
this.end_frame(frame)
} else {
unimplemented!()
}
}
}
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