diff options
Diffstat (limited to 'Source/WebCore/platform/graphics/filters/FEComponentTransfer.h')
-rw-r--r-- | Source/WebCore/platform/graphics/filters/FEComponentTransfer.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/filters/FEComponentTransfer.h b/Source/WebCore/platform/graphics/filters/FEComponentTransfer.h new file mode 100644 index 0000000..bbe3ebb --- /dev/null +++ b/Source/WebCore/platform/graphics/filters/FEComponentTransfer.h @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org> + * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org> + * Copyright (C) 2005 Eric Seidel <eric@webkit.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef FEComponentTransfer_h +#define FEComponentTransfer_h + +#if ENABLE(FILTERS) +#include "FilterEffect.h" + +#include "Filter.h" +#include <wtf/Vector.h> + +namespace WebCore { + +enum ComponentTransferType { + FECOMPONENTTRANSFER_TYPE_UNKNOWN = 0, + FECOMPONENTTRANSFER_TYPE_IDENTITY = 1, + FECOMPONENTTRANSFER_TYPE_TABLE = 2, + FECOMPONENTTRANSFER_TYPE_DISCRETE = 3, + FECOMPONENTTRANSFER_TYPE_LINEAR = 4, + FECOMPONENTTRANSFER_TYPE_GAMMA = 5 +}; + +struct ComponentTransferFunction { + ComponentTransferFunction() + : type(FECOMPONENTTRANSFER_TYPE_UNKNOWN) + , slope(0) + , intercept(0) + , amplitude(0) + , exponent(0) + , offset(0) + { + } + + ComponentTransferType type; + + float slope; + float intercept; + float amplitude; + float exponent; + float offset; + + Vector<float> tableValues; +}; + +class FEComponentTransfer : public FilterEffect { +public: + static PassRefPtr<FEComponentTransfer> create(Filter*, const ComponentTransferFunction& redFunc, const ComponentTransferFunction& greenFunc, + const ComponentTransferFunction& blueFunc, const ComponentTransferFunction& alphaFunc); + + ComponentTransferFunction redFunction() const; + void setRedFunction(const ComponentTransferFunction&); + + ComponentTransferFunction greenFunction() const; + void setGreenFunction(const ComponentTransferFunction&); + + ComponentTransferFunction blueFunction() const; + void setBlueFunction(const ComponentTransferFunction&); + + ComponentTransferFunction alphaFunction() const; + void setAlphaFunction(const ComponentTransferFunction&); + + virtual void apply(); + virtual void dump(); + + virtual TextStream& externalRepresentation(TextStream&, int indention) const; + +private: + FEComponentTransfer(Filter*, const ComponentTransferFunction& redFunc, const ComponentTransferFunction& greenFunc, + const ComponentTransferFunction& blueFunc, const ComponentTransferFunction& alphaFunc); + + ComponentTransferFunction m_redFunc; + ComponentTransferFunction m_greenFunc; + ComponentTransferFunction m_blueFunc; + ComponentTransferFunction m_alphaFunc; +}; + +} // namespace WebCore + +#endif // ENABLE(FILTERS) + +#endif // FEComponentTransfer_h |