ladybird/Userland/Libraries/LibWeb/SVG/SVGTextContentElement.cpp
Andi Gallo ead56e88db LibWeb: Avoid crash for unsupported length unit in SVG elements
Acid3 sets 1em as the y coordinate of one of external SVG fonts, we
don't support that yet. Ignore unsupported unit instead of crashing.
2023-06-11 19:04:30 +02:00

65 lines
2.2 KiB
C++

/*
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Utf16View.h>
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/Utf16String.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/Layout/SVGTextBox.h>
#include <LibWeb/SVG/AttributeNames.h>
#include <LibWeb/SVG/AttributeParser.h>
#include <LibWeb/SVG/SVGGeometryElement.h>
#include <LibWeb/SVG/SVGTextContentElement.h>
namespace Web::SVG {
SVGTextContentElement::SVGTextContentElement(DOM::Document& document, DOM::QualifiedName qualified_name)
: SVGGraphicsElement(document, move(qualified_name))
{
}
JS::ThrowCompletionOr<void> SVGTextContentElement::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Base::initialize(realm));
set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGTextContentElementPrototype>(realm, "SVGTextContentElement"));
return {};
}
void SVGTextContentElement::parse_attribute(DeprecatedFlyString const& name, DeprecatedString const& value)
{
SVGGraphicsElement::parse_attribute(name, value);
if (name == SVG::AttributeNames::x) {
m_x = AttributeParser::parse_coordinate(value).value_or(m_x);
} else if (name == SVG::AttributeNames::y) {
m_y = AttributeParser::parse_coordinate(value).value_or(m_y);
} else if (name == SVG::AttributeNames::dx) {
m_dx = AttributeParser::parse_coordinate(value).value_or(m_dx);
} else if (name == SVG::AttributeNames::dy) {
m_dy = AttributeParser::parse_coordinate(value).value_or(m_dy);
}
}
JS::GCPtr<Layout::Node> SVGTextContentElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
{
return heap().allocate_without_realm<Layout::SVGTextBox>(document(), *this, move(style));
}
// https://svgwg.org/svg2-draft/text.html#__svg__SVGTextContentElement__getNumberOfChars
WebIDL::ExceptionOr<int> SVGTextContentElement::get_number_of_chars() const
{
auto chars = TRY_OR_THROW_OOM(vm(), utf8_to_utf16(child_text_content()));
return static_cast<int>(chars.size());
}
Gfx::FloatPoint SVGTextContentElement::get_offset() const
{
return { m_x + m_dx, m_y + m_dy };
}
}