1 /* 2 * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org> 3 * Copyright (C) 2004, 2005, 2006, 2007 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 #ifndef SVGZoomAndPan_h 23 #define SVGZoomAndPan_h 24 25 #include "core/SVGNames.h" 26 #include "core/dom/QualifiedName.h" 27 #include "wtf/HashSet.h" 28 29 namespace blink { 30 31 class ExceptionState; 32 33 enum SVGZoomAndPanType { 34 SVGZoomAndPanUnknown = 0, 35 SVGZoomAndPanDisable, 36 SVGZoomAndPanMagnify 37 }; 38 39 class SVGZoomAndPan { 40 public: 41 // Forward declare enumerations in the W3C naming scheme, for IDL generation. 42 enum { 43 SVG_ZOOMANDPAN_UNKNOWN = SVGZoomAndPanUnknown, 44 SVG_ZOOMANDPAN_DISABLE = SVGZoomAndPanDisable, 45 SVG_ZOOMANDPAN_MAGNIFY = SVGZoomAndPanMagnify 46 }; 47 ~SVGZoomAndPan()48 virtual ~SVGZoomAndPan() { } 49 50 static bool isKnownAttribute(const QualifiedName&); 51 static void addSupportedAttributes(HashSet<QualifiedName>&); 52 parseFromNumber(unsigned short number)53 static SVGZoomAndPanType parseFromNumber(unsigned short number) 54 { 55 if (!number || number > SVGZoomAndPanMagnify) 56 return SVGZoomAndPanUnknown; 57 return static_cast<SVGZoomAndPanType>(number); 58 } 59 60 bool parseZoomAndPan(const LChar*& start, const LChar* end); 61 bool parseZoomAndPan(const UChar*& start, const UChar* end); 62 parseAttribute(const QualifiedName & name,const AtomicString & value)63 bool parseAttribute(const QualifiedName& name, const AtomicString& value) 64 { 65 if (name == SVGNames::zoomAndPanAttr) { 66 m_zoomAndPan = SVGZoomAndPanUnknown; 67 if (!value.isEmpty()) { 68 if (value.is8Bit()) { 69 const LChar* start = value.characters8(); 70 parseZoomAndPan(start, start + value.length()); 71 } else { 72 const UChar* start = value.characters16(); 73 parseZoomAndPan(start, start + value.length()); 74 } 75 } 76 return true; 77 } 78 79 return false; 80 } 81 82 // JS API zoomAndPan()83 SVGZoomAndPanType zoomAndPan() const { return m_zoomAndPan; } setZoomAndPan(unsigned short value)84 virtual void setZoomAndPan(unsigned short value) { m_zoomAndPan = parseFromNumber(value); } setZoomAndPan(unsigned short value,ExceptionState &)85 virtual void setZoomAndPan(unsigned short value, ExceptionState&) { setZoomAndPan(value); } 86 87 protected: 88 SVGZoomAndPan(); 89 void resetZoomAndPan(); 90 91 private: 92 SVGZoomAndPanType m_zoomAndPan; 93 }; 94 95 } // namespace blink 96 97 #endif // SVGZoomAndPan_h 98