SVGHKernElement.cpp [plain text]
#include "config.h"
#if ENABLE(SVG_FONTS)
#include "SVGHKernElement.h"
#include "SVGFontElement.h"
#include "SVGFontFaceElement.h"
#include "SVGNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGHKernElement);
inline SVGHKernElement::SVGHKernElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document)
{
ASSERT(hasTagName(SVGNames::hkernTag));
}
Ref<SVGHKernElement> SVGHKernElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGHKernElement(tagName, document));
}
Optional<SVGKerningPair> SVGHKernElement::buildHorizontalKerningPair() const
{
auto& u1 = attributeWithoutSynchronization(SVGNames::u1Attr);
auto& g1 = attributeWithoutSynchronization(SVGNames::g1Attr);
if (u1.isEmpty() && g1.isEmpty())
return WTF::nullopt;
auto& u2 = attributeWithoutSynchronization(SVGNames::u2Attr);
auto& g2 = attributeWithoutSynchronization(SVGNames::g2Attr);
if (u2.isEmpty() && g2.isEmpty())
return WTF::nullopt;
auto glyphName1 = parseGlyphName(g1);
if (!glyphName1)
return WTF::nullopt;
auto glyphName2 = parseGlyphName(g2);
if (!glyphName2)
return WTF::nullopt;
auto unicodeString1 = parseKerningUnicodeString(u1);
if (!unicodeString1)
return WTF::nullopt;
auto unicodeString2 = parseKerningUnicodeString(u2);
if (!unicodeString2)
return WTF::nullopt;
bool ok = false;
auto kerning = attributeWithoutSynchronization(SVGNames::kAttr).string().toFloat(&ok);
if (!ok)
return WTF::nullopt;
return SVGKerningPair {
WTFMove(unicodeString1->first),
WTFMove(unicodeString1->second),
WTFMove(*glyphName1),
WTFMove(unicodeString2->first),
WTFMove(unicodeString2->second),
WTFMove(*glyphName2),
kerning
};
}
}
#endif // ENABLE(SVG_FONTS)