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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 http://mozilla.org/MPL/2.0/. */
use core::nonzero::NonZero;
use dom::bindings::codegen::Bindings::GamepadBinding;
use dom::bindings::codegen::Bindings::GamepadBinding::GamepadMethods;
use dom::bindings::inheritance::Castable;
use dom::bindings::num::Finite;
use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
use dom::bindings::root::{Dom, DomRoot};
use dom::bindings::str::DOMString;
use dom::event::Event;
use dom::eventtarget::EventTarget;
use dom::gamepadbuttonlist::GamepadButtonList;
use dom::gamepadevent::{GamepadEvent, GamepadEventType};
use dom::globalscope::GlobalScope;
use dom::vrpose::VRPose;
use dom_struct::dom_struct;
use js::jsapi::{Heap, JSContext, JSObject};
use js::typedarray::{Float64Array, CreateWith};
use std::cell::Cell;
use std::ptr;
use webvr_traits::{WebVRGamepadData, WebVRGamepadHand, WebVRGamepadState};
#[dom_struct]
pub struct Gamepad {
reflector_: Reflector,
gamepad_id: u32,
id: String,
index: Cell<i32>,
connected: Cell<bool>,
timestamp: Cell<f64>,
mapping_type: String,
axes: Heap<*mut JSObject>,
buttons: Dom<GamepadButtonList>,
pose: Option<Dom<VRPose>>,
#[ignore_heap_size_of = "Defined in rust-webvr"]
hand: WebVRGamepadHand,
display_id: u32
}
impl Gamepad {
fn new_inherited(gamepad_id: u32,
id: String,
index: i32,
connected: bool,
timestamp: f64,
mapping_type: String,
buttons: &GamepadButtonList,
pose: Option<&VRPose>,
hand: WebVRGamepadHand,
display_id: u32) -> Gamepad {
Self {
reflector_: Reflector::new(),
gamepad_id: gamepad_id,
id: id,
index: Cell::new(index),
connected: Cell::new(connected),
timestamp: Cell::new(timestamp),
mapping_type: mapping_type,
axes: Heap::default(),
buttons: Dom::from_ref(buttons),
pose: pose.map(Dom::from_ref),
hand: hand,
display_id: display_id
}
}
#[allow(unsafe_code)]
pub fn new_from_vr(global: &GlobalScope,
index: i32,
data: &WebVRGamepadData,
state: &WebVRGamepadState) -> DomRoot<Gamepad> {
let buttons = GamepadButtonList::new_from_vr(&global, &state.buttons);
let pose = VRPose::new(&global, &state.pose);
let gamepad = reflect_dom_object(box Gamepad::new_inherited(state.gamepad_id,
data.name.clone(),
index,
state.connected,
state.timestamp,
"".into(),
&buttons,
Some(&pose),
data.hand.clone(),
data.display_id),
global,
GamepadBinding::Wrap);
let cx = global.get_cx();
rooted!(in (cx) let mut array = ptr::null_mut());
unsafe {
let _ = Float64Array::create(cx, CreateWith::Slice(&state.axes), array.handle_mut());
}
gamepad.axes.set(array.get());
gamepad
}
}
impl GamepadMethods for Gamepad {
// https://w3c.github.io/gamepad/#dom-gamepad-id
fn Id(&self) -> DOMString {
DOMString::from(self.id.clone())
}
// https://w3c.github.io/gamepad/#dom-gamepad-index
fn Index(&self) -> i32 {
self.index.get()
}
// https://w3c.github.io/gamepad/#dom-gamepad-connected
fn Connected(&self) -> bool {
self.connected.get()
}
// https://w3c.github.io/gamepad/#dom-gamepad-timestamp
fn Timestamp(&self) -> Finite<f64> {
Finite::wrap(self.timestamp.get())
}
// https://w3c.github.io/gamepad/#dom-gamepad-mapping
fn Mapping(&self) -> DOMString {
DOMString::from(self.mapping_type.clone())
}
#[allow(unsafe_code)]
// https://w3c.github.io/gamepad/#dom-gamepad-axes
unsafe fn Axes(&self, _cx: *mut JSContext) -> NonZero<*mut JSObject> {
NonZero::new_unchecked(self.axes.get())
}
// https://w3c.github.io/gamepad/#dom-gamepad-buttons
fn Buttons(&self) -> DomRoot<GamepadButtonList> {
DomRoot::from_ref(&*self.buttons)
}
// https://w3c.github.io/gamepad/extensions.html#gamepadhand-enum
fn Hand(&self) -> DOMString {
let value = match self.hand {
WebVRGamepadHand::Unknown => "",
WebVRGamepadHand::Left => "left",
WebVRGamepadHand::Right => "right"
};
value.into()
}
// https://w3c.github.io/gamepad/extensions.html#dom-gamepad-pose
fn GetPose(&self) -> Option<DomRoot<VRPose>> {
self.pose.as_ref().map(|p| DomRoot::from_ref(&**p))
}
// https://w3c.github.io/webvr/spec/1.1/#gamepad-getvrdisplays-attribute
fn DisplayId(&self) -> u32 {
self.display_id
}
}
impl Gamepad {
#[allow(unsafe_code)]
pub fn update_from_vr(&self, state: &WebVRGamepadState) {
self.timestamp.set(state.timestamp);
unsafe {
let cx = self.global().get_cx();
typedarray!(in(cx) let axes: Float64Array = self.axes.get());
if let Ok(mut array) = axes {
array.update(&state.axes);
}
}
self.buttons.sync_from_vr(&state.buttons);
if let Some(ref pose) = self.pose {
pose.update(&state.pose);
}
self.update_connected(state.connected);
}
pub fn gamepad_id(&self) -> u32 {
self.gamepad_id
}
pub fn update_connected(&self, connected: bool) {
if self.connected.get() == connected {
return;
}
self.connected.set(connected);
let event_type = if connected {
GamepadEventType::Connected
} else {
GamepadEventType::Disconnected
};
self.notify_event(event_type);
}
pub fn update_index(&self, index: i32) {
self.index.set(index);
}
pub fn notify_event(&self, event_type: GamepadEventType) {
let event = GamepadEvent::new_with_type(&self.global(), event_type, &self);
event.upcast::<Event>().fire(self.global().as_window().upcast::<EventTarget>());
}
}
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