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http://www.robohornet.org gives a score of 101.36 on master, and 102.68 with this PR. The latter is slightly better, but probably within noise level. So it looks like this PR does not affect DOM performance. This is expected since `Box::new` is defined as: ```rust impl<T> Box<T> { #[inline(always)] pub fn new(x: T) -> Box<T> { box x } } ``` With inlining, it should compile to the same as box syntax.
124 lines
4.6 KiB
Rust
124 lines
4.6 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::EventBinding::EventBinding::EventMethods;
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use dom::bindings::codegen::Bindings::VRDisplayEventBinding;
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use dom::bindings::codegen::Bindings::VRDisplayEventBinding::VRDisplayEventMethods;
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use dom::bindings::codegen::Bindings::VRDisplayEventBinding::VRDisplayEventReason;
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use dom::bindings::error::Fallible;
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use dom::bindings::inheritance::Castable;
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use dom::bindings::reflector::{DomObject, reflect_dom_object};
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use dom::bindings::root::{Dom, DomRoot};
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use dom::bindings::str::DOMString;
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use dom::event::Event;
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use dom::globalscope::GlobalScope;
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use dom::vrdisplay::VRDisplay;
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use dom::window::Window;
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use dom_struct::dom_struct;
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use servo_atoms::Atom;
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use webvr_traits::{WebVRDisplayEvent, WebVRDisplayEventReason};
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#[dom_struct]
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pub struct VRDisplayEvent {
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event: Event,
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display: Dom<VRDisplay>,
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reason: Option<VRDisplayEventReason>
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}
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impl VRDisplayEvent {
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fn new_inherited(display: &VRDisplay,
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reason: Option<VRDisplayEventReason>)
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-> VRDisplayEvent {
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VRDisplayEvent {
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event: Event::new_inherited(),
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display: Dom::from_ref(display),
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reason: reason.clone()
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}
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}
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pub fn new(global: &GlobalScope,
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type_: Atom,
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bubbles: bool,
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cancelable: bool,
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display: &VRDisplay,
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reason: Option<VRDisplayEventReason>)
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-> DomRoot<VRDisplayEvent> {
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let ev = reflect_dom_object(
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Box::new(VRDisplayEvent::new_inherited(&display, reason)),
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global,
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VRDisplayEventBinding::Wrap
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);
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{
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let event = ev.upcast::<Event>();
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event.init_event(type_, bubbles, cancelable);
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}
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ev
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}
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pub fn new_from_webvr(global: &GlobalScope,
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display: &VRDisplay,
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event: &WebVRDisplayEvent)
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-> DomRoot<VRDisplayEvent> {
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let (name, reason) = match *event {
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WebVRDisplayEvent::Connect(_) => ("vrdisplayconnect", None),
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WebVRDisplayEvent::Disconnect(_) => ("vrdisplaydisconnect", None),
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WebVRDisplayEvent::Activate(_, reason) => ("vrdisplayactivate", Some(reason)),
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WebVRDisplayEvent::Deactivate(_, reason) => ("vrdisplaydeactivate", Some(reason)),
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WebVRDisplayEvent::Blur(_) => ("vrdisplayblur", None),
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WebVRDisplayEvent::Focus(_) => ("vrdisplayfocus", None),
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WebVRDisplayEvent::PresentChange(_, _) => ("vrdisplaypresentchange", None),
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WebVRDisplayEvent::Change(_) |
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WebVRDisplayEvent::Pause(_) |
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WebVRDisplayEvent::Resume(_) |
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WebVRDisplayEvent::Exit(_) => {
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panic!("{:?} event not available in WebVR", event)
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}
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};
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// map to JS enum values
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let reason = reason.map(|r| {
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match r {
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WebVRDisplayEventReason::Navigation => VRDisplayEventReason::Navigation,
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WebVRDisplayEventReason::Mounted => VRDisplayEventReason::Mounted,
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WebVRDisplayEventReason::Unmounted => VRDisplayEventReason::Unmounted,
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}
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});
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VRDisplayEvent::new(&global,
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Atom::from(DOMString::from(name)),
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false,
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false,
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&display,
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reason)
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}
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pub fn Constructor(window: &Window,
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type_: DOMString,
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init: &VRDisplayEventBinding::VRDisplayEventInit)
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-> Fallible<DomRoot<VRDisplayEvent>> {
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Ok(VRDisplayEvent::new(&window.global(),
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Atom::from(type_),
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init.parent.bubbles,
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init.parent.cancelable,
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&init.display,
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init.reason))
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}
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}
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impl VRDisplayEventMethods for VRDisplayEvent {
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// https://w3c.github.io/webvr/#dom-vrdisplayevent-display
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fn Display(&self) -> DomRoot<VRDisplay> {
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DomRoot::from_ref(&*self.display)
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}
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// https://w3c.github.io/webvr/#enumdef-vrdisplayeventreason
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fn GetReason(&self) -> Option<VRDisplayEventReason> {
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self.reason
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}
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// https://dom.spec.whatwg.org/#dom-event-istrusted
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fn IsTrusted(&self) -> bool {
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self.event.IsTrusted()
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}
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}
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