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/*
* Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007, 2010 Rob Buis <buis@kde.org>
* Copyright (C) 2014 Samsung Electronics. 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* 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.
*/
#ifndef SVGFitToViewBox_h
#define SVGFitToViewBox_h
#include "core/SVGNames.h"
#include "core/dom/Document.h"
#include "core/dom/QualifiedName.h"
#include "core/svg/SVGAnimatedPreserveAspectRatio.h"
#include "core/svg/SVGAnimatedRect.h"
#include "core/svg/SVGDocumentExtensions.h"
#include "core/svg/SVGParsingError.h"
#include "core/svg/SVGPreserveAspectRatio.h"
#include "core/svg/SVGRect.h"
#include "wtf/HashSet.h"
namespace WebCore {
class AffineTransform;
class Document;
class SVGFitToViewBox {
public:
enum PropertyMapPolicy {
PropertyMapPolicyAdd,
PropertyMapPolicySkip,
};
static AffineTransform viewBoxToViewTransform(const FloatRect& viewBoxRect, PassRefPtr<SVGPreserveAspectRatio>, float viewWidth, float viewHeight);
static bool isKnownAttribute(const QualifiedName&);
static void addSupportedAttributes(HashSet<QualifiedName>&);
bool parseAttribute(const QualifiedName& name, const AtomicString& value, Document& document, SVGParsingError& parseError)
{
if (name == SVGNames::viewBoxAttr) {
m_viewBox->setBaseValueAsString(value, parseError);
if (m_viewBox->baseValue()->width() < 0.0f) {
document.accessSVGExtensions().reportError("A negative value for ViewBox width is not allowed");
m_viewBox->baseValue()->setInvalid();
}
if (m_viewBox->baseValue()->height() < 0.0f) {
document.accessSVGExtensions().reportError("A negative value for ViewBox height is not allowed");
m_viewBox->baseValue()->setInvalid();
}
return true;
}
if (name == SVGNames::preserveAspectRatioAttr) {
m_preserveAspectRatio->setBaseValueAsString(value, parseError);
return true;
}
return false;
}
bool hasEmptyViewBox() const { return m_viewBox->currentValue()->isValid() && m_viewBox->currentValue()->value().isEmpty(); }
// JS API
SVGAnimatedRect* viewBox() const { return m_viewBox.get(); }
SVGAnimatedPreserveAspectRatio* preserveAspectRatio() const { return m_preserveAspectRatio.get(); }
protected:
explicit SVGFitToViewBox(SVGElement*, PropertyMapPolicy = PropertyMapPolicyAdd);
void updateViewBox(const FloatRect&);
void clearViewBox() { m_viewBox = nullptr; }
void clearPreserveAspectRatio() { m_preserveAspectRatio = nullptr; }
private:
RefPtr<SVGAnimatedRect> m_viewBox;
RefPtr<SVGAnimatedPreserveAspectRatio> m_preserveAspectRatio;
};
} // namespace WebCore
#endif // SVGFitToViewBox_h
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