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 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#ifndef SVGPreserveAspectRatio_h
22#define SVGPreserveAspectRatio_h
23
24#include "core/svg/properties/SVGPropertyTraits.h"
25
26namespace WebCore {
27
28class AffineTransform;
29class ExceptionState;
30class FloatRect;
31
32class SVGPreserveAspectRatio {
33    WTF_MAKE_FAST_ALLOCATED;
34public:
35    enum SVGPreserveAspectRatioType {
36        SVG_PRESERVEASPECTRATIO_UNKNOWN = 0,
37        SVG_PRESERVEASPECTRATIO_NONE = 1,
38        SVG_PRESERVEASPECTRATIO_XMINYMIN = 2,
39        SVG_PRESERVEASPECTRATIO_XMIDYMIN = 3,
40        SVG_PRESERVEASPECTRATIO_XMAXYMIN = 4,
41        SVG_PRESERVEASPECTRATIO_XMINYMID = 5,
42        SVG_PRESERVEASPECTRATIO_XMIDYMID = 6,
43        SVG_PRESERVEASPECTRATIO_XMAXYMID = 7,
44        SVG_PRESERVEASPECTRATIO_XMINYMAX = 8,
45        SVG_PRESERVEASPECTRATIO_XMIDYMAX = 9,
46        SVG_PRESERVEASPECTRATIO_XMAXYMAX = 10
47    };
48
49    enum SVGMeetOrSliceType {
50        SVG_MEETORSLICE_UNKNOWN = 0,
51        SVG_MEETORSLICE_MEET = 1,
52        SVG_MEETORSLICE_SLICE = 2
53    };
54
55    SVGPreserveAspectRatio();
56
57    void setAlign(unsigned short align, ExceptionState&);
58    unsigned short align() const { return m_align; }
59
60    void setMeetOrSlice(unsigned short, ExceptionState&);
61    unsigned short meetOrSlice() const { return m_meetOrSlice; }
62
63    void transformRect(FloatRect& destRect, FloatRect& srcRect);
64
65    AffineTransform getCTM(float logicX, float logicY,
66                           float logicWidth, float logicHeight,
67                           float physWidth, float physHeight) const;
68
69    void parse(const String&);
70    bool parse(const LChar*& ptr, const LChar* end, bool validate);
71    bool parse(const UChar*& ptr, const UChar* end, bool validate);
72
73    String valueAsString() const;
74
75private:
76    template<typename CharType>
77    bool parseInternal(const CharType*& ptr, const CharType* end, bool validate);
78
79    SVGPreserveAspectRatioType m_align;
80    SVGMeetOrSliceType m_meetOrSlice;
81};
82
83template<>
84struct SVGPropertyTraits<SVGPreserveAspectRatio> {
85    static SVGPreserveAspectRatio initialValue() { return SVGPreserveAspectRatio(); }
86    static String toString(const SVGPreserveAspectRatio& type) { return type.valueAsString(); }
87};
88
89} // namespace WebCore
90
91#endif // SVGPreserveAspectRatio_h
92