1/* 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. 5 * 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. 10 * 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. 15 * 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. 20 */ 21 22#include "config.h" 23 24#include "core/svg/SVGFitToViewBox.h" 25 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" 33 34namespace blink { 35 36SVGFitToViewBox::SVGFitToViewBox(SVGElement* element, PropertyMapPolicy propertyMapPolicy) 37 : m_viewBox(SVGAnimatedRect::create(element, SVGNames::viewBoxAttr)) 38 , m_preserveAspectRatio(SVGAnimatedPreserveAspectRatio::create(element, SVGNames::preserveAspectRatioAttr, SVGPreserveAspectRatio::create())) 39{ 40 ASSERT(element); 41 if (propertyMapPolicy == PropertyMapPolicyAdd) { 42 element->addToPropertyMap(m_viewBox); 43 element->addToPropertyMap(m_preserveAspectRatio); 44 } 45} 46 47AffineTransform SVGFitToViewBox::viewBoxToViewTransform(const FloatRect& viewBoxRect, PassRefPtr<SVGPreserveAspectRatio> preserveAspectRatio, float viewWidth, float viewHeight) 48{ 49 if (!viewBoxRect.width() || !viewBoxRect.height() || !viewWidth || !viewHeight) 50 return AffineTransform(); 51 52 return preserveAspectRatio->getCTM(viewBoxRect.x(), viewBoxRect.y(), viewBoxRect.width(), viewBoxRect.height(), viewWidth, viewHeight); 53} 54 55bool SVGFitToViewBox::isKnownAttribute(const QualifiedName& attrName) 56{ 57 return attrName == SVGNames::viewBoxAttr || attrName == SVGNames::preserveAspectRatioAttr; 58} 59 60void SVGFitToViewBox::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes) 61{ 62 supportedAttributes.add(SVGNames::viewBoxAttr); 63 supportedAttributes.add(SVGNames::preserveAspectRatioAttr); 64} 65 66void SVGFitToViewBox::updateViewBox(const FloatRect& rect) 67{ 68 ASSERT(m_viewBox); 69 m_viewBox->baseValue()->setValue(rect); 70} 71 72} 73