script/dom/
dompointreadonly.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use std::cell::Cell;
6
7use dom_struct::dom_struct;
8use js::context::JSContext;
9use js::rust::HandleObject;
10use rustc_hash::FxHashMap;
11use script_bindings::reflector::{Reflector, reflect_dom_object_with_proto_and_cx};
12use servo_base::id::{DomPointId, DomPointIndex};
13use servo_constellation_traits::DomPoint;
14
15use crate::dom::bindings::codegen::Bindings::DOMMatrixBinding::DOMMatrixInit;
16use crate::dom::bindings::codegen::Bindings::DOMPointBinding::DOMPointInit;
17use crate::dom::bindings::codegen::Bindings::DOMPointReadOnlyBinding::DOMPointReadOnlyMethods;
18use crate::dom::bindings::error::Fallible;
19use crate::dom::bindings::reflector::DomGlobal;
20use crate::dom::bindings::root::DomRoot;
21use crate::dom::bindings::serializable::Serializable;
22use crate::dom::bindings::structuredclone::StructuredData;
23use crate::dom::dommatrixreadonly::dommatrixinit_to_matrix;
24use crate::dom::globalscope::GlobalScope;
25use crate::dom::types::DOMPoint;
26
27/// <http://dev.w3.org/fxtf/geometry/Overview.html#dompointreadonly>
28#[dom_struct]
29pub(crate) struct DOMPointReadOnly {
30    reflector_: Reflector,
31    x: Cell<f64>,
32    y: Cell<f64>,
33    z: Cell<f64>,
34    w: Cell<f64>,
35}
36
37impl DOMPointReadOnly {
38    pub(crate) fn new_inherited(x: f64, y: f64, z: f64, w: f64) -> DOMPointReadOnly {
39        DOMPointReadOnly {
40            x: Cell::new(x),
41            y: Cell::new(y),
42            z: Cell::new(z),
43            w: Cell::new(w),
44            reflector_: Reflector::new(),
45        }
46    }
47
48    pub(crate) fn new(
49        cx: &mut JSContext,
50        global: &GlobalScope,
51        x: f64,
52        y: f64,
53        z: f64,
54        w: f64,
55    ) -> DomRoot<DOMPointReadOnly> {
56        Self::new_with_proto(cx, global, None, x, y, z, w)
57    }
58
59    fn new_with_proto(
60        cx: &mut JSContext,
61        global: &GlobalScope,
62        proto: Option<HandleObject>,
63        x: f64,
64        y: f64,
65        z: f64,
66        w: f64,
67    ) -> DomRoot<DOMPointReadOnly> {
68        reflect_dom_object_with_proto_and_cx(
69            Box::new(DOMPointReadOnly::new_inherited(x, y, z, w)),
70            global,
71            proto,
72            cx,
73        )
74    }
75}
76
77impl DOMPointReadOnlyMethods<crate::DomTypeHolder> for DOMPointReadOnly {
78    /// <https://drafts.fxtf.org/geometry/#dom-dompoint-dompoint>
79    fn Constructor(
80        cx: &mut JSContext,
81        global: &GlobalScope,
82        proto: Option<HandleObject>,
83        x: f64,
84        y: f64,
85        z: f64,
86        w: f64,
87    ) -> Fallible<DomRoot<DOMPointReadOnly>> {
88        Ok(DOMPointReadOnly::new_with_proto(
89            cx, global, proto, x, y, z, w,
90        ))
91    }
92
93    /// <https://drafts.fxtf.org/geometry/#dom-dompointreadonly-frompoint>
94    fn FromPoint(cx: &mut JSContext, global: &GlobalScope, init: &DOMPointInit) -> DomRoot<Self> {
95        Self::new(cx, global, init.x, init.y, init.z, init.w)
96    }
97
98    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-x>
99    fn X(&self) -> f64 {
100        self.x.get()
101    }
102
103    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-y>
104    fn Y(&self) -> f64 {
105        self.y.get()
106    }
107
108    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-z>
109    fn Z(&self) -> f64 {
110        self.z.get()
111    }
112
113    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-w>
114    fn W(&self) -> f64 {
115        self.w.get()
116    }
117
118    /// <https://dev.w3.org/fxtf/geometry/Overview.html#dom-dompointreadonly-matrixtransform>
119    /// <https://drafts.fxtf.org/geometry/Overview.html#transform-a-point-with-a-matrix>
120    fn MatrixTransform(
121        &self,
122        cx: &mut JSContext,
123        matrix: &DOMMatrixInit,
124    ) -> Fallible<DomRoot<DOMPoint>> {
125        // Let matrixObject be the result of invoking create a DOMMatrix from the dictionary matrix.
126        let matrix_object = match dommatrixinit_to_matrix(matrix) {
127            Ok(converted) => converted,
128            Err(exception) => {
129                return Err(exception);
130            },
131        };
132        // Steps 1-4 of transforming a point with a matrix
133        let x = self.X();
134        let y = self.Y();
135        let z = self.Z();
136        let w = self.W();
137        // Steps 5-12 of transforming a point with a matrix
138        let m = &matrix_object.1;
139        let transformed_point = DOMPointInit {
140            x: m.m11 * x + m.m21 * y + m.m31 * z + m.m41 * w,
141            y: m.m12 * x + m.m22 * y + m.m32 * z + m.m42 * w,
142            z: m.m13 * x + m.m23 * y + m.m33 * z + m.m43 * w,
143            w: m.m14 * x + m.m24 * y + m.m34 * z + m.m44 * w,
144        };
145        // Return the result of invoking transform a point with a matrix, given the current point
146        // and matrixObject. The current point does not get modified.
147        Ok(DOMPoint::new_from_init(
148            cx,
149            &self.global(),
150            &transformed_point,
151        ))
152    }
153}
154
155#[expect(non_snake_case)]
156pub(crate) trait DOMPointWriteMethods {
157    fn SetX(&self, value: f64);
158    fn SetY(&self, value: f64);
159    fn SetZ(&self, value: f64);
160    fn SetW(&self, value: f64);
161}
162
163impl DOMPointWriteMethods for DOMPointReadOnly {
164    fn SetX(&self, value: f64) {
165        self.x.set(value);
166    }
167
168    fn SetY(&self, value: f64) {
169        self.y.set(value);
170    }
171
172    fn SetZ(&self, value: f64) {
173        self.z.set(value);
174    }
175
176    fn SetW(&self, value: f64) {
177        self.w.set(value);
178    }
179}
180
181impl Serializable for DOMPointReadOnly {
182    type Index = DomPointIndex;
183    type Data = DomPoint;
184
185    fn serialize(&self) -> Result<(DomPointId, Self::Data), ()> {
186        let serialized = DomPoint {
187            x: self.x.get(),
188            y: self.y.get(),
189            z: self.z.get(),
190            w: self.w.get(),
191        };
192        Ok((DomPointId::new(), serialized))
193    }
194
195    fn deserialize(
196        cx: &mut JSContext,
197        owner: &GlobalScope,
198        serialized: Self::Data,
199    ) -> Result<DomRoot<Self>, ()> {
200        Ok(Self::new(
201            cx,
202            owner,
203            serialized.x,
204            serialized.y,
205            serialized.z,
206            serialized.w,
207        ))
208    }
209
210    fn serialized_storage<'a>(
211        data: StructuredData<'a, '_>,
212    ) -> &'a mut Option<FxHashMap<DomPointId, Self::Data>> {
213        match data {
214            StructuredData::Reader(r) => &mut r.points,
215            StructuredData::Writer(w) => &mut w.points,
216        }
217    }
218}
script/dom/dompointreadonly.rs

script/dom/
dompointreadonly.rs
