2 * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007, 2010 Rob Buis <buis@kde.org>
4 * Copyright (C) 2014 Samsung Electronics. All rights reserved.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
24 #include "core/svg/SVGFitToViewBox.h"
26 #include "core/dom/Attribute.h"
27 #include "core/svg/SVGDocumentExtensions.h"
28 #include "core/svg/SVGElement.h"
29 #include "core/svg/SVGParserUtilities.h"
30 #include "platform/geometry/FloatRect.h"
31 #include "platform/transforms/AffineTransform.h"
32 #include "wtf/text/StringImpl.h"
36 class SVGAnimatedViewBoxRect : public SVGAnimatedRect {
38 static PassRefPtr<SVGAnimatedRect> create(SVGElement* contextElement)
40 return adoptRef(new SVGAnimatedViewBoxRect(contextElement));
43 void setBaseValueAsString(const String&, SVGParsingError&) override;
46 SVGAnimatedViewBoxRect(SVGElement* contextElement)
47 : SVGAnimatedRect(contextElement, SVGNames::viewBoxAttr)
52 void SVGAnimatedViewBoxRect::setBaseValueAsString(const String& value, SVGParsingError& parseError)
54 TrackExceptionState es;
56 baseValue()->setValueAsString(value, es);
58 if (es.hadException()) {
59 parseError = ParsingAttributeFailedError;
63 if (baseValue()->width() < 0 || baseValue()->height() < 0) {
64 parseError = NegativeValueForbiddenError;
65 baseValue()->setInvalid();
69 SVGFitToViewBox::SVGFitToViewBox(SVGElement* element, PropertyMapPolicy propertyMapPolicy)
70 : m_viewBox(SVGAnimatedViewBoxRect::create(element))
71 , m_preserveAspectRatio(SVGAnimatedPreserveAspectRatio::create(element, SVGNames::preserveAspectRatioAttr, SVGPreserveAspectRatio::create()))
74 if (propertyMapPolicy == PropertyMapPolicyAdd) {
75 element->addToPropertyMap(m_viewBox);
76 element->addToPropertyMap(m_preserveAspectRatio);
80 AffineTransform SVGFitToViewBox::viewBoxToViewTransform(const FloatRect& viewBoxRect, PassRefPtr<SVGPreserveAspectRatio> preserveAspectRatio, float viewWidth, float viewHeight)
82 if (!viewBoxRect.width() || !viewBoxRect.height() || !viewWidth || !viewHeight)
83 return AffineTransform();
85 return preserveAspectRatio->getCTM(viewBoxRect.x(), viewBoxRect.y(), viewBoxRect.width(), viewBoxRect.height(), viewWidth, viewHeight);
88 bool SVGFitToViewBox::isKnownAttribute(const QualifiedName& attrName)
90 return attrName == SVGNames::viewBoxAttr || attrName == SVGNames::preserveAspectRatioAttr;
93 void SVGFitToViewBox::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes)
95 supportedAttributes.add(SVGNames::viewBoxAttr);
96 supportedAttributes.add(SVGNames::preserveAspectRatioAttr);
99 void SVGFitToViewBox::updateViewBox(const FloatRect& rect)
102 m_viewBox->baseValue()->setValue(rect);