mirror of
https://github.com/RGBCube/serenity
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102 lines
3.9 KiB
C++
102 lines
3.9 KiB
C++
/*
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* Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Geometry/DOMQuad.h>
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namespace Web::Geometry {
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JS_DEFINE_ALLOCATOR(DOMQuad);
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JS::NonnullGCPtr<DOMQuad> DOMQuad::construct_impl(JS::Realm& realm, DOMPointInit const& p1, DOMPointInit const& p2, DOMPointInit const& p3, DOMPointInit const& p4)
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{
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return realm.heap().allocate<DOMQuad>(realm, realm, p1, p2, p3, p4);
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}
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DOMQuad::DOMQuad(JS::Realm& realm, DOMPointInit const& p1, DOMPointInit const& p2, DOMPointInit const& p3, DOMPointInit const& p4)
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: PlatformObject(realm)
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, m_p1(DOMPoint::from_point(realm.vm(), p1))
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, m_p2(DOMPoint::from_point(realm.vm(), p2))
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, m_p3(DOMPoint::from_point(realm.vm(), p3))
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, m_p4(DOMPoint::from_point(realm.vm(), p4))
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{
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}
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DOMQuad::~DOMQuad() = default;
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// https://drafts.fxtf.org/geometry/#dom-domquad-fromrect
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JS::NonnullGCPtr<DOMQuad> DOMQuad::from_rect(JS::VM& vm, DOMRectInit const& other)
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{
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// The fromRect(other) static method on DOMQuad must create a DOMQuad from the DOMRectInit dictionary other.
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return construct_impl(*vm.current_realm(), { other.x, other.y },
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{ other.x + other.width, other.y },
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{ other.x + other.width, other.y + other.height },
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{ other.x, other.y + other.height });
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}
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// https://drafts.fxtf.org/geometry/#dom-domquad-fromquad
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JS::NonnullGCPtr<DOMQuad> DOMQuad::from_quad(JS::VM& vm, DOMQuadInit const& other)
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{
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// The fromQuad(other) static method on DOMQuad must create a DOMQuad from the DOMQuadInit dictionary other.
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return construct_impl(*vm.current_realm(), other.p1, other.p2, other.p3, other.p4);
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}
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// https://drafts.fxtf.org/geometry/#dom-domquad-getbounds
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JS::NonnullGCPtr<DOMRect> DOMQuad::get_bounds() const
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{
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auto nan_safe_minimum = [](double a, double b, double c, double d) -> double {
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if (isnan(a) || isnan(b) || isnan(c) || isnan(d))
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return NAN;
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return min(a, min(b, min(c, d)));
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};
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auto nan_safe_maximum = [](double a, double b, double c, double d) -> double {
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if (isnan(a) || isnan(b) || isnan(c) || isnan(d))
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return NAN;
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return max(a, max(b, max(c, d)));
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};
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// 1. Let bounds be a DOMRect object.
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auto bounds = DOMRect::create(realm(), {});
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// 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.
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auto left = nan_safe_minimum(m_p1->x(), m_p2->x(), m_p3->x(), m_p4->x());
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// 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.
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auto top = nan_safe_minimum(m_p1->y(), m_p2->y(), m_p3->y(), m_p4->y());
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// 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.
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auto right = nan_safe_maximum(m_p1->x(), m_p2->x(), m_p3->x(), m_p4->x());
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// 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.
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auto bottom = nan_safe_maximum(m_p1->y(), m_p2->y(), m_p3->y(), m_p4->y());
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// 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.
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bounds->set_x(left);
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bounds->set_y(top);
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bounds->set_width(right - left);
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bounds->set_height(bottom - top);
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// 7. Return bounds.
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return bounds;
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}
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void DOMQuad::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMQuadPrototype>(realm, "DOMQuad"_fly_string));
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}
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void DOMQuad::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_p1);
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visitor.visit(m_p2);
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visitor.visit(m_p3);
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visitor.visit(m_p4);
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}
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}
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