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SVGFEComponentTransfer.h
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1/*
2 Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 2004, 2005 Rob Buis <buis@kde.org>
4 2005 Eric Seidel <eric@webkit.org>
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 aint 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 SVGFEComponentTransfer_h
23#define SVGFEComponentTransfer_h
24
25#if ENABLE(SVG) && ENABLE(SVG_FILTERS)
26#include <wtf/Vector.h>
27
28#include "SVGFilterEffect.h"
29#include "SVGFEDisplacementMap.h"
30
31#if PLATFORM(CI)
32#ifdef __OBJC__
33@class CIImage;
34@class CIFilter;
35#else
36class CIImage;
37class CIFilter;
38#endif
39#endif
40
41namespace WebCore {
42
43enum SVGComponentTransferType {
44 SVG_FECOMPONENTTRANSFER_TYPE_UNKNOWN = 0,
45 SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY = 1,
46 SVG_FECOMPONENTTRANSFER_TYPE_TABLE = 2,
47 SVG_FECOMPONENTTRANSFER_TYPE_DISCRETE = 3,
48 SVG_FECOMPONENTTRANSFER_TYPE_LINEAR = 4,
49 SVG_FECOMPONENTTRANSFER_TYPE_GAMMA = 5
50};
51
52struct SVGComponentTransferFunction {
53 SVGComponentTransferFunction()
54 : type(SVG_FECOMPONENTTRANSFER_TYPE_UNKNOWN)
55 , slope(0.0f)
56 , intercept(0.0f)
57 , amplitude(0.0f)
58 , exponent(0.0f)
59 , offset(0.0f)
60 {
61 }
62
63 SVGComponentTransferType type;
64
65 float slope;
66 float intercept;
67 float amplitude;
68 float exponent;
69 float offset;
70
71 Vector<float> tableValues;
72};
73
74class SVGFEComponentTransfer : public SVGFilterEffect {
75public:
76 SVGFEComponentTransfer(SVGResourceFilter*);
77
78 SVGComponentTransferFunction redFunction() const;
79 void setRedFunction(const SVGComponentTransferFunction&);
80
81 SVGComponentTransferFunction greenFunction() const;
82 void setGreenFunction(const SVGComponentTransferFunction&);
83
84 SVGComponentTransferFunction blueFunction() const;
85 void setBlueFunction(const SVGComponentTransferFunction&);
86
87 SVGComponentTransferFunction alphaFunction() const;
88 void setAlphaFunction(const SVGComponentTransferFunction&);
89
90 virtual TextStream& externalRepresentation(TextStream&) const;
91
92#if PLATFORM(CI)
93 virtual CIFilter* getCIFilter(const FloatRect& bbox) const;
94
95private:
96 CIFilter* getFunctionFilter(SVGChannelSelectorType, CIImage* inputImage) const;
97#endif
98
99private:
100 SVGComponentTransferFunction m_redFunc;
101 SVGComponentTransferFunction m_greenFunc;
102 SVGComponentTransferFunction m_blueFunc;
103 SVGComponentTransferFunction m_alphaFunc;
104};
105
106} // namespace WebCore
107
108#endif // ENABLE(SVG) && ENABLE(SVG_FILTERS)
109
110#endif // SVGFEComponentTransfer_h
SVGFEDisplacementMap.h
SVGFilterEffect.h
WebCore
Definition: CSSHelper.h:7
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