SkSVGFeColorMatrix.h

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/*
 * Copyright 2020 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef SkSVGFeColorMatrix_DEFINED
#define SkSVGFeColorMatrix_DEFINED
 
#include "include/effects/SkColorMatrix.h"
#include "modules/svg/include/SkSVGFe.h"
#include "modules/svg/include/SkSVGTypes.h"
 
class SK_API SkSVGFeColorMatrix final : public SkSVGFe {
public:
    static sk_sp<SkSVGFeColorMatrix> Make() {
        return sk_sp<SkSVGFeColorMatrix>(new SkSVGFeColorMatrix());
    }
 
    SVG_ATTR(Type, SkSVGFeColorMatrixType, SkSVGFeColorMatrixType(SkSVGFeColorMatrixType::kMatrix))
    SVG_ATTR(Values, SkSVGFeColorMatrixValues, SkSVGFeColorMatrixValues())
 
protected:
    sk_sp<SkImageFilter> onMakeImageFilter(const SkSVGRenderContext&,
                                           const SkSVGFilterContext&) const override;
 
    std::vector<SkSVGFeInputType> getInputs() const override { return {this->getIn()}; }
 
    bool parseAndSetAttribute(const char*, const char*) override;
 
private:
    SkSVGFeColorMatrix() : INHERITED(SkSVGTag::kFeColorMatrix) {}
 
    SkColorMatrix makeMatrixForType() const;
 
    static SkColorMatrix MakeSaturate(SkSVGNumberType s);
 
    static SkColorMatrix MakeHueRotate(SkSVGNumberType degrees);
 
    static SkColorMatrix MakeLuminanceToAlpha();
 
    using INHERITED = SkSVGFe;
};
 
#endif  // SkSVGFeColorMatrix_DEFINED