2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
/*
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* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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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/HTML/Path2D.h>
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#include <LibWeb/SVG/AttributeParser.h>
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#include <LibWeb/SVG/SVGPathElement.h>
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namespace Web::HTML {
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JS::NonnullGCPtr<Path2D> Path2D::construct_impl(JS::Realm& realm, Optional<Variant<JS::Handle<Path2D>, DeprecatedString>> const& path)
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{
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return realm.heap().allocate<Path2D>(realm, realm, path);
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}
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// https://html.spec.whatwg.org/multipage/canvas.html#dom-path2d
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Path2D::Path2D(JS::Realm& realm, Optional<Variant<JS::Handle<Path2D>, DeprecatedString>> const& path)
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: PlatformObject(realm)
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, CanvasPath(static_cast<Bindings::PlatformObject&>(*this))
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{
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// 1. Let output be a new Path2D object.
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// 2. If path is not given, then return output.
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if (!path.has_value())
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return;
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// 3. If path is a Path2D object, then add all subpaths of path to output and return output.
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// (In other words, it returns a copy of the argument.)
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if (path->has<JS::Handle<Path2D>>()) {
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this->path() = path->get<JS::Handle<Path2D>>()->path();
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return;
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}
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// 4. Let svgPath be the result of parsing and interpreting path according to SVG 2's rules for path data. [SVG]
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auto path_instructions = SVG::AttributeParser::parse_path_data(path->get<DeprecatedString>());
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auto svg_path = SVG::path_from_path_instructions(path_instructions);
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if (!svg_path.segments().is_empty()) {
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// 5. Let (x, y) be the last point in svgPath.
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auto xy = svg_path.segments().last().point();
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// 6. Add all the subpaths, if any, from svgPath to output.
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this->path() = move(svg_path);
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// 7. Create a new subpath in output with (x, y) as the only point in the subpath.
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this->move_to(xy.x(), xy.y());
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}
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// 8. Return output.
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}
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Path2D::~Path2D() = default;
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JS::ThrowCompletionOr<void> Path2D::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::Path2DPrototype>(realm, "Path2D"));
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return {};
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}
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}
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