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SVGPreserveAspectRatio.h

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00001 /*
00002     Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
00003                   2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
00004 
00005     This file is part of the KDE project
00006 
00007     This library is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU Library General Public
00009     License as published by the Free Software Foundation; either
00010     version 2 of the License, or (at your option) any later version.
00011 
00012     This library is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015     Library General Public License for more details.
00016 
00017     You should have received a copy of the GNU Library General Public License
00018     along with this library; see the file COPYING.LIB.  If not, write to
00019     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00020     Boston, MA 02110-1301, USA.
00021 */
00022 
00023 #ifndef SVGPreserveAspectRatio_h
00024 #define SVGPreserveAspectRatio_h
00025 
00026 #if ENABLE(SVG)
00027 #include "PlatformString.h"
00028 #include "SVGNames.h"
00029 #include "Document.h"
00030 
00031 #include <wtf/RefCounted.h>
00032 
00033 //khtml
00034 #include <wtf/PassRefPtr.h>
00035 
00036 namespace WebCore {
00037 
00038     //class String;
00039     class AffineTransform;
00040     class SVGStyledElement;
00041 
00042     class SVGPreserveAspectRatio : public RefCounted<SVGPreserveAspectRatio> { 
00043     public:
00044         static PassRefPtr<SVGPreserveAspectRatio> create() { return adoptRef(new SVGPreserveAspectRatio); }
00045 
00046         enum SVGPreserveAspectRatioType {
00047             SVG_PRESERVEASPECTRATIO_UNKNOWN     = 0,
00048             SVG_PRESERVEASPECTRATIO_NONE        = 1,
00049             SVG_PRESERVEASPECTRATIO_XMINYMIN    = 2,
00050             SVG_PRESERVEASPECTRATIO_XMIDYMIN    = 3,
00051             SVG_PRESERVEASPECTRATIO_XMAXYMIN    = 4,
00052             SVG_PRESERVEASPECTRATIO_XMINYMID    = 5,
00053             SVG_PRESERVEASPECTRATIO_XMIDYMID    = 6,
00054             SVG_PRESERVEASPECTRATIO_XMAXYMID    = 7,
00055             SVG_PRESERVEASPECTRATIO_XMINYMAX    = 8,
00056             SVG_PRESERVEASPECTRATIO_XMIDYMAX    = 9,
00057             SVG_PRESERVEASPECTRATIO_XMAXYMAX    = 10
00058         };
00059 
00060         enum SVGMeetOrSliceType {
00061             SVG_MEETORSLICE_UNKNOWN    = 0,
00062             SVG_MEETORSLICE_MEET       = 1,
00063             SVG_MEETORSLICE_SLICE      = 2
00064         };
00065 
00066         virtual ~SVGPreserveAspectRatio();
00067 
00068         void setAlign(unsigned short);
00069         unsigned short align() const;
00070 
00071         void setMeetOrSlice(unsigned short);
00072         unsigned short meetOrSlice() const;
00073         
00074         AffineTransform getCTM(double logicX, double logicY,
00075                                double logicWidth, double logicHeight,
00076                                double physX, double physY,
00077                                double physWidth, double physHeight);
00078 
00079         // Helper
00080         bool parsePreserveAspectRatio(const UChar*& currParam, const UChar* end, bool validate = true);
00081 
00082         const QualifiedName& associatedAttributeName() const { return SVGNames::preserveAspectRatioAttr; }
00083 
00084     private:
00085         SVGPreserveAspectRatio();
00086         
00087         unsigned short m_align;
00088         unsigned short m_meetOrSlice;
00089     };
00090 
00091 } // namespace WebCore
00092 
00093 #endif // ENABLE(SVG)
00094 #endif // SVGPreserveAspectRatio_h
00095 

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