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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.
*/
#include "config.h"
#include "core/svg/SVGFitToViewBox.h"
#include "core/dom/Attribute.h"
#include "core/svg/SVGDocumentExtensions.h"
#include "core/svg/SVGElement.h"
#include "core/svg/SVGParserUtilities.h"
#include "platform/geometry/FloatRect.h"
#include "platform/transforms/AffineTransform.h"
#include "wtf/text/StringImpl.h"
namespace blink {
class SVGAnimatedViewBoxRect : public SVGAnimatedRect {
public:
static PassRefPtrWillBeRawPtr<SVGAnimatedRect> create(SVGElement* contextElement)
{
return adoptRefWillBeNoop(new SVGAnimatedViewBoxRect(contextElement));
}
void setBaseValueAsString(const String&, SVGParsingError&) override;
protected:
SVGAnimatedViewBoxRect(SVGElement* contextElement)
: SVGAnimatedRect(contextElement, SVGNames::viewBoxAttr)
{
}
};
void SVGAnimatedViewBoxRect::setBaseValueAsString(const String& value, SVGParsingError& parseError)
{
TrackExceptionState es;
baseValue()->setValueAsString(value, es);
if (es.hadException()) {
parseError = ParsingAttributeFailedError;
return;
}
if (baseValue()->width() < 0 || baseValue()->height() < 0) {
parseError = NegativeValueForbiddenError;
baseValue()->setInvalid();
}
}
SVGFitToViewBox::SVGFitToViewBox(SVGElement* element, PropertyMapPolicy propertyMapPolicy)
: m_viewBox(SVGAnimatedViewBoxRect::create(element))
, m_preserveAspectRatio(SVGAnimatedPreserveAspectRatio::create(element, SVGNames::preserveAspectRatioAttr, SVGPreserveAspectRatio::create()))
{
ASSERT(element);
if (propertyMapPolicy == PropertyMapPolicyAdd) {
element->addToPropertyMap(m_viewBox);
element->addToPropertyMap(m_preserveAspectRatio);
}
}
void SVGFitToViewBox::trace(Visitor* visitor)
{
visitor->trace(m_viewBox);
visitor->trace(m_preserveAspectRatio);
}
AffineTransform SVGFitToViewBox::viewBoxToViewTransform(const FloatRect& viewBoxRect, PassRefPtrWillBeRawPtr<SVGPreserveAspectRatio> preserveAspectRatio, float viewWidth, float viewHeight)
{
if (!viewBoxRect.width() || !viewBoxRect.height() || !viewWidth || !viewHeight)
return AffineTransform();
return preserveAspectRatio->getCTM(viewBoxRect.x(), viewBoxRect.y(), viewBoxRect.width(), viewBoxRect.height(), viewWidth, viewHeight);
}
bool SVGFitToViewBox::isKnownAttribute(const QualifiedName& attrName)
{
return attrName == SVGNames::viewBoxAttr || attrName == SVGNames::preserveAspectRatioAttr;
}
void SVGFitToViewBox::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes)
{
supportedAttributes.add(SVGNames::viewBoxAttr);
supportedAttributes.add(SVGNames::preserveAspectRatioAttr);
}
void SVGFitToViewBox::updateViewBox(const FloatRect& rect)
{
ASSERT(m_viewBox);
m_viewBox->baseValue()->setValue(rect);
}
}
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