servo/components/script/dom/dompoint.rs

/* 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 dom_struct::dom_struct;
use js::rust::HandleObject;
use rustc_hash::FxHashMap;
use servo_base::id::{DomPointId, DomPointIndex};
use servo_constellation_traits::DomPoint;

use crate::dom::bindings::codegen::Bindings::DOMPointBinding::{DOMPointInit, DOMPointMethods};
use crate::dom::bindings::codegen::Bindings::DOMPointReadOnlyBinding::DOMPointReadOnlyMethods;
use crate::dom::bindings::error::Fallible;
use crate::dom::bindings::reflector::reflect_dom_object_with_proto;
use crate::dom::bindings::root::DomRoot;
use crate::dom::bindings::serializable::Serializable;
use crate::dom::bindings::structuredclone::StructuredData;
use crate::dom::dompointreadonly::{DOMPointReadOnly, DOMPointWriteMethods};
use crate::dom::globalscope::GlobalScope;
use crate::script_runtime::CanGc;

// http://dev.w3.org/fxtf/geometry/Overview.html#dompoint
#[dom_struct]
pub(crate) struct DOMPoint {
    point: DOMPointReadOnly,
}

impl DOMPoint {
    fn new_inherited(x: f64, y: f64, z: f64, w: f64) -> DOMPoint {
        DOMPoint {
            point: DOMPointReadOnly::new_inherited(x, y, z, w),
        }
    }

    pub(crate) fn new(
        global: &GlobalScope,
        x: f64,
        y: f64,
        z: f64,
        w: f64,
        can_gc: CanGc,
    ) -> DomRoot<DOMPoint> {
        Self::new_with_proto(global, None, x, y, z, w, can_gc)
    }

    fn new_with_proto(
        global: &GlobalScope,
        proto: Option<HandleObject>,
        x: f64,
        y: f64,
        z: f64,
        w: f64,
        can_gc: CanGc,
    ) -> DomRoot<DOMPoint> {
        reflect_dom_object_with_proto(
            Box::new(DOMPoint::new_inherited(x, y, z, w)),
            global,
            proto,
            can_gc,
        )
    }

    pub(crate) fn new_from_init(
        global: &GlobalScope,
        p: &DOMPointInit,
        can_gc: CanGc,
    ) -> DomRoot<DOMPoint> {
        DOMPoint::new(global, p.x, p.y, p.z, p.w, can_gc)
    }
}

impl DOMPointMethods<crate::DomTypeHolder> for DOMPoint {
    /// <https://drafts.fxtf.org/geometry/#dom-dompointreadonly-dompointreadonly>
    fn Constructor(
        global: &GlobalScope,
        proto: Option<HandleObject>,
        can_gc: CanGc,
        x: f64,
        y: f64,
        z: f64,
        w: f64,
    ) -> Fallible<DomRoot<DOMPoint>> {
        Ok(DOMPoint::new_with_proto(global, proto, x, y, z, w, can_gc))
    }

    /// <https://drafts.fxtf.org/geometry/#dom-dompoint-frompoint>
    fn FromPoint(global: &GlobalScope, init: &DOMPointInit, can_gc: CanGc) -> DomRoot<Self> {
        Self::new_from_init(global, init, can_gc)
    }

    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-x>
    fn X(&self) -> f64 {
        self.point.X()
    }

    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-x>
    fn SetX(&self, value: f64) {
        self.point.SetX(value);
    }

    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-y>
    fn Y(&self) -> f64 {
        self.point.Y()
    }

    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-y>
    fn SetY(&self, value: f64) {
        self.point.SetY(value);
    }

    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-z>
    fn Z(&self) -> f64 {
        self.point.Z()
    }

    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-z>
    fn SetZ(&self, value: f64) {
        self.point.SetZ(value);
    }

    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-w>
    fn W(&self) -> f64 {
        self.point.W()
    }

    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-w>
    fn SetW(&self, value: f64) {
        self.point.SetW(value);
    }
}

impl Serializable for DOMPoint {
    type Index = DomPointIndex;
    type Data = DomPoint;

    fn serialize(&self) -> Result<(DomPointId, Self::Data), ()> {
        let serialized = DomPoint {
            x: self.X(),
            y: self.Y(),
            z: self.Z(),
            w: self.W(),
        };
        Ok((DomPointId::new(), serialized))
    }

    fn deserialize(
        owner: &GlobalScope,
        serialized: Self::Data,
        can_gc: CanGc,
    ) -> Result<DomRoot<Self>, ()>
    where
        Self: Sized,
    {
        Ok(Self::new(
            owner,
            serialized.x,
            serialized.y,
            serialized.z,
            serialized.w,
            can_gc,
        ))
    }

    fn serialized_storage<'a>(
        data: StructuredData<'a, '_>,
    ) -> &'a mut Option<FxHashMap<DomPointId, Self::Data>> {
        match data {
            StructuredData::Reader(reader) => &mut reader.points,
            StructuredData::Writer(writer) => &mut writer.points,
        }
    }
}