| /* |
| * 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> |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * 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 |
| |
| #include "core/platform/graphics/filters/FilterEffect.h" |
| |
| #include "core/platform/graphics/filters/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 SkImageFilter* createImageFilter(SkiaImageFilterBuilder*); |
| |
| virtual TextStream& externalRepresentation(TextStream&, int indention) const; |
| |
| private: |
| FEComponentTransfer(Filter*, const ComponentTransferFunction& redFunc, const ComponentTransferFunction& greenFunc, |
| const ComponentTransferFunction& blueFunc, const ComponentTransferFunction& alphaFunc); |
| |
| virtual void applySoftware() OVERRIDE; |
| virtual bool applySkia() OVERRIDE; |
| |
| void getValues(unsigned char rValues[256], unsigned char gValues[256], unsigned char bValues[256], unsigned char aValues[256]); |
| |
| ComponentTransferFunction m_redFunc; |
| ComponentTransferFunction m_greenFunc; |
| ComponentTransferFunction m_blueFunc; |
| ComponentTransferFunction m_alphaFunc; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // FEComponentTransfer_h |