SVGGlyphRefElement.cpp   [plain text]

 * Copyright (C) 2011 Leo Yang <>
 * Copyright (C) 2018 Apple Inc. All rights reserved.
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * Library General Public License for more details.
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.

#include "config.h"

#include "SVGGlyphRefElement.h"

#include "SVGGlyphElement.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include "XLinkNames.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/text/AtomString.h>

namespace WebCore {


inline SVGGlyphRefElement::SVGGlyphRefElement(const QualifiedName& tagName, Document& document)
    : SVGElement(tagName, document)
    , SVGURIReference(this)

Ref<SVGGlyphRefElement> SVGGlyphRefElement::create(const QualifiedName& tagName, Document& document)
    return adoptRef(*new SVGGlyphRefElement(tagName, document));

bool SVGGlyphRefElement::hasValidGlyphElement(String& glyphName) const
    // FIXME: We only support xlink:href so far.
    // No need to support glyphRef referencing another node inside a shadow tree.
    auto target = targetElementFromIRIString(getAttribute(SVGNames::hrefAttr, XLinkNames::hrefAttr), document());
    glyphName = target.identifier;
    return is<SVGGlyphElement>(target.element);

static float parseFloat(const AtomString& value)
    float result;
    if (!parseNumberFromString(value, result))
        return 0;
    return result;

void SVGGlyphRefElement::parseAttribute(const QualifiedName& name, const AtomString& value)
    // FIXME: Is the error handling in parseFloat correct for these attributes?
    if (name == SVGNames::xAttr)
        m_x = parseFloat(value);
    else if (name == SVGNames::yAttr)
        m_y = parseFloat(value);
    else if (name == SVGNames::dxAttr)
        m_dx = parseFloat(value);
    else if (name == SVGNames::dyAttr)
        m_dy = parseFloat(value);
    else {
        SVGURIReference::parseAttribute(name, value);
        SVGElement::parseAttribute(name, value);

void SVGGlyphRefElement::setX(float x)
    setAttribute(SVGNames::xAttr, AtomString::number(x));

void SVGGlyphRefElement::setY(float y)
    setAttribute(SVGNames::yAttr, AtomString::number(y));

void SVGGlyphRefElement::setDx(float dx)
    setAttribute(SVGNames::dxAttr, AtomString::number(dx));

void SVGGlyphRefElement::setDy(float dy)
    setAttribute(SVGNames::dyAttr, AtomString::number(dy));