| /* |
| * 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) 2021-2022 Apple 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. |
| */ |
| |
| #pragma once |
| |
| #include "FilterEffect.h" |
| #include <wtf/Vector.h> |
| |
| namespace WebCore { |
| |
| enum ColorMatrixType { |
| FECOLORMATRIX_TYPE_UNKNOWN = 0, |
| FECOLORMATRIX_TYPE_MATRIX = 1, |
| FECOLORMATRIX_TYPE_SATURATE = 2, |
| FECOLORMATRIX_TYPE_HUEROTATE = 3, |
| FECOLORMATRIX_TYPE_LUMINANCETOALPHA = 4 |
| }; |
| |
| class FEColorMatrix : public FilterEffect { |
| public: |
| WEBCORE_EXPORT static Ref<FEColorMatrix> create(ColorMatrixType, Vector<float>&&); |
| |
| ColorMatrixType type() const { return m_type; } |
| bool setType(ColorMatrixType); |
| |
| const Vector<float>& values() const { return m_values; } |
| bool setValues(const Vector<float>&); |
| |
| static void calculateSaturateComponents(float* components, float value); |
| static void calculateHueRotateComponents(float* components, float value); |
| static Vector<float> normalizedFloats(const Vector<float>& values); |
| |
| template<class Encoder> void encode(Encoder&) const; |
| template<class Decoder> static std::optional<Ref<FEColorMatrix>> decode(Decoder&); |
| |
| private: |
| FEColorMatrix(ColorMatrixType, Vector<float>&&); |
| |
| bool resultIsAlphaImage(const FilterImageVector& inputs) const override; |
| |
| bool supportsAcceleratedRendering() const override; |
| std::unique_ptr<FilterEffectApplier> createAcceleratedApplier() const override; |
| std::unique_ptr<FilterEffectApplier> createSoftwareApplier() const override; |
| |
| WTF::TextStream& externalRepresentation(WTF::TextStream&, FilterRepresentation) const override; |
| |
| ColorMatrixType m_type; |
| Vector<float> m_values; |
| }; |
| |
| template<class Encoder> |
| void FEColorMatrix::encode(Encoder& encoder) const |
| { |
| encoder << m_type; |
| encoder << m_values; |
| } |
| |
| template<class Decoder> |
| std::optional<Ref<FEColorMatrix>> FEColorMatrix::decode(Decoder& decoder) |
| { |
| std::optional<ColorMatrixType> type; |
| decoder >> type; |
| if (!type) |
| return std::nullopt; |
| |
| std::optional<Vector<float>> values; |
| decoder >> values; |
| if (!values) |
| return std::nullopt; |
| |
| return FEColorMatrix::create(*type, WTFMove(*values)); |
| } |
| |
| } // namespace WebCore |
| |
| namespace WTF { |
| |
| template<> struct EnumTraits<WebCore::ColorMatrixType> { |
| using values = EnumValues< |
| WebCore::ColorMatrixType, |
| |
| WebCore::FECOLORMATRIX_TYPE_UNKNOWN, |
| WebCore::FECOLORMATRIX_TYPE_MATRIX, |
| WebCore::FECOLORMATRIX_TYPE_SATURATE, |
| WebCore::FECOLORMATRIX_TYPE_HUEROTATE, |
| WebCore::FECOLORMATRIX_TYPE_LUMINANCETOALPHA |
| >; |
| }; |
| |
| } // namespace WTF |
| |
| SPECIALIZE_TYPE_TRAITS_FILTER_EFFECT(FEColorMatrix) |