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LibWeb: Support creating Path2D objects from SVG path strings

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This reuses the SVG path parsing code.
This commit is contained in:
Andreas Kling 2022-11-29 14:07:22 +01:00
parent 65d762130a
commit c266284559
1 changed files with 18 additions and 6 deletions
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24
Userland/Libraries/LibWeb/HTML/Path2D.cpp
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@ -1,11 +1,14 @@
/*
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/HTML/Path2D.h>
#include <LibWeb/SVG/AttributeParser.h>
#include <LibWeb/SVG/SVGPathElement.h>
namespace Web::HTML {
@ -33,13 +36,22 @@ Path2D::Path2D(JS::Realm& realm, Optional<Variant<JS::Handle<Path2D>, String>> c
return;
}
dbgln("TODO: Implement constructing Path2D object with an SVG path string");
// 4. Let svgPath be the result of parsing and interpreting path according to SVG 2's rules for path data. [SVG]
auto path_instructions = SVG::AttributeParser::parse_path_data(path->get<String>());
auto svg_path = SVG::path_from_path_instructions(path_instructions);
// FIXME: 4. Let svgPath be the result of parsing and interpreting path according to SVG 2's rules for path data. [SVG]
// FIXME: 5. Let (x, y) be the last point in svgPath.
// FIXME: 6. Add all the subpaths, if any, from svgPath to output.
// FIXME: 7. Create a new subpath in output with (x, y) as the only point in the subpath.
// FIXME: 8. Return output.
if (!svg_path.segments().is_empty()) {
// 5. Let (x, y) be the last point in svgPath.
auto xy = svg_path.segments().last().point();
// 6. Add all the subpaths, if any, from svgPath to output.
this->path() = move(svg_path);
// 7. Create a new subpath in output with (x, y) as the only point in the subpath.
this->move_to(xy.x(), xy.y());
}
// 8. Return output.
}
Path2D::~Path2D() = default;