script/dom/domquad.rs
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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 dom_struct::dom_struct;
use js::rust::HandleObject;
use crate::dom::bindings::codegen::Bindings::DOMPointBinding::{DOMPointInit, DOMPointMethods};
use crate::dom::bindings::codegen::Bindings::DOMQuadBinding::{DOMQuadInit, DOMQuadMethods};
use crate::dom::bindings::codegen::Bindings::DOMRectReadOnlyBinding::DOMRectInit;
use crate::dom::bindings::error::Fallible;
use crate::dom::bindings::reflector::{reflect_dom_object_with_proto, DomGlobal, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::dompoint::DOMPoint;
use crate::dom::domrect::DOMRect;
use crate::dom::globalscope::GlobalScope;
use crate::script_runtime::CanGc;
/// <https://drafts.fxtf.org/geometry/#DOMQuad>
#[dom_struct]
pub(crate) struct DOMQuad {
reflector_: Reflector,
p1: Dom<DOMPoint>,
p2: Dom<DOMPoint>,
p3: Dom<DOMPoint>,
p4: Dom<DOMPoint>,
}
impl DOMQuad {
fn new_inherited(p1: &DOMPoint, p2: &DOMPoint, p3: &DOMPoint, p4: &DOMPoint) -> DOMQuad {
DOMQuad {
reflector_: Reflector::new(),
p1: Dom::from_ref(p1),
p2: Dom::from_ref(p2),
p3: Dom::from_ref(p3),
p4: Dom::from_ref(p4),
}
}
pub(crate) fn new(
global: &GlobalScope,
p1: &DOMPoint,
p2: &DOMPoint,
p3: &DOMPoint,
p4: &DOMPoint,
can_gc: CanGc,
) -> DomRoot<DOMQuad> {
Self::new_with_proto(global, None, p1, p2, p3, p4, can_gc)
}
fn new_with_proto(
global: &GlobalScope,
proto: Option<HandleObject>,
p1: &DOMPoint,
p2: &DOMPoint,
p3: &DOMPoint,
p4: &DOMPoint,
can_gc: CanGc,
) -> DomRoot<DOMQuad> {
reflect_dom_object_with_proto(
Box::new(DOMQuad::new_inherited(p1, p2, p3, p4)),
global,
proto,
can_gc,
)
}
}
impl DOMQuadMethods<crate::DomTypeHolder> for DOMQuad {
// https://drafts.fxtf.org/geometry/#dom-domquad-domquad
fn Constructor(
global: &GlobalScope,
proto: Option<HandleObject>,
can_gc: CanGc,
p1: &DOMPointInit,
p2: &DOMPointInit,
p3: &DOMPointInit,
p4: &DOMPointInit,
) -> Fallible<DomRoot<DOMQuad>> {
Ok(DOMQuad::new_with_proto(
global,
proto,
&DOMPoint::new_from_init(global, p1, can_gc),
&DOMPoint::new_from_init(global, p2, can_gc),
&DOMPoint::new_from_init(global, p3, can_gc),
&DOMPoint::new_from_init(global, p4, can_gc),
can_gc,
))
}
// https://drafts.fxtf.org/geometry/#dom-domquad-fromrect
fn FromRect(global: &GlobalScope, other: &DOMRectInit, can_gc: CanGc) -> DomRoot<DOMQuad> {
DOMQuad::new(
global,
&DOMPoint::new(global, other.x, other.y, 0f64, 1f64, can_gc),
&DOMPoint::new(global, other.x + other.width, other.y, 0f64, 1f64, can_gc),
&DOMPoint::new(
global,
other.x + other.width,
other.y + other.height,
0f64,
1f64,
can_gc,
),
&DOMPoint::new(global, other.x, other.y + other.height, 0f64, 1f64, can_gc),
can_gc,
)
}
// https://drafts.fxtf.org/geometry/#dom-domquad-fromquad
fn FromQuad(global: &GlobalScope, other: &DOMQuadInit, can_gc: CanGc) -> DomRoot<DOMQuad> {
DOMQuad::new(
global,
&DOMPoint::new_from_init(global, &other.p1, can_gc),
&DOMPoint::new_from_init(global, &other.p2, can_gc),
&DOMPoint::new_from_init(global, &other.p3, can_gc),
&DOMPoint::new_from_init(global, &other.p4, can_gc),
can_gc,
)
}
// https://drafts.fxtf.org/geometry/#dom-domquad-p1
fn P1(&self) -> DomRoot<DOMPoint> {
DomRoot::from_ref(&self.p1)
}
// https://drafts.fxtf.org/geometry/#dom-domquad-p2
fn P2(&self) -> DomRoot<DOMPoint> {
DomRoot::from_ref(&self.p2)
}
// https://drafts.fxtf.org/geometry/#dom-domquad-p3
fn P3(&self) -> DomRoot<DOMPoint> {
DomRoot::from_ref(&self.p3)
}
// https://drafts.fxtf.org/geometry/#dom-domquad-p4
fn P4(&self) -> DomRoot<DOMPoint> {
DomRoot::from_ref(&self.p4)
}
// https://drafts.fxtf.org/geometry/#dom-domquad-getbounds
fn GetBounds(&self, can_gc: CanGc) -> DomRoot<DOMRect> {
// https://drafts.fxtf.org/geometry/#nan-safe-minimum
let nan_safe_minimum = |a: f64, b: f64| {
if a.is_nan() || b.is_nan() {
f64::NAN
} else {
a.min(b)
}
};
// https://drafts.fxtf.org/geometry/#nan-safe-maximum
let nan_safe_maximum = |a: f64, b: f64| {
if a.is_nan() || b.is_nan() {
f64::NAN
} else {
a.max(b)
}
};
// Step 1. Let bounds be a DOMRect object.
// NOTE: We construct the object at the end
// Step 2. Let left be the NaN-safe minimum of point 1’s x coordinate,
// point 2’s x coordinate, point 3’s x coordinate and point 4’s x coordinate.
let left = nan_safe_minimum(
nan_safe_minimum(self.p1.X(), self.p2.X()),
nan_safe_minimum(self.p3.X(), self.p4.X()),
);
// Step 3. Let top be the NaN-safe minimum of point 1’s y coordinate,
// point 2’s y coordinate, point 3’s y coordinate and point 4’s y coordinate.
let top = nan_safe_minimum(
nan_safe_minimum(self.p1.Y(), self.p2.Y()),
nan_safe_minimum(self.p3.Y(), self.p4.Y()),
);
// Step 4. Let right be the NaN-safe maximum of point 1’s x coordinate,
// point 2’s x coordinate, point 3’s x coordinate and point 4’s x coordinate.
let right = nan_safe_maximum(
nan_safe_maximum(self.p1.X(), self.p2.X()),
nan_safe_maximum(self.p3.X(), self.p4.X()),
);
// Step 5. Let bottom be the NaN-safe maximum of point 1’s y coordinate,
// point 2’s y coordinate, point 3’s y coordinate and point 4’s y coordinate.
let bottom = nan_safe_maximum(
nan_safe_maximum(self.p1.Y(), self.p2.Y()),
nan_safe_maximum(self.p3.Y(), self.p4.Y()),
);
// Step 6. Set x coordinate of bounds to left, y coordinate of bounds to top,
// width dimension of bounds to right - left and height dimension of bounds to bottom - top.
// NOTE: Combined with Step 1.
DOMRect::new(
&self.global(),
left,
top,
right - left,
bottom - top,
can_gc,
)
}
}