SkWorkingFormatColorFilter.h

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/*

 * Copyright 2023 Google LLC

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

*/

#ifndef SkWorkingFormatColorFilter_DEFINED

#define SkWorkingFormatColorFilter_DEFINED

#include "include/core/SkColorFilter.h"

#include "include/core/SkFlattenable.h"

#include "include/core/SkRefCnt.h"

#include "include/private/SkColorData.h"

#include "modules/skcms/skcms.h"

#include "src/effects/colorfilters/SkColorFilterBase.h"

class SkColorSpace;

class SkReadBuffer;

class SkWriteBuffer;

enum SkAlphaType : int;

struct SkStageRec;

class SkWorkingFormatColorFilter final : public SkColorFilterBase {

public:

    SkWorkingFormatColorFilter(sk_sp<SkColorFilter> child,

                               const skcms_TransferFunction* tf,

                               const skcms_Matrix3x3* gamut,

                               const SkAlphaType* at);

    sk_sp<SkColorSpace> workingFormat(const sk_sp<SkColorSpace>& dstCS, SkAlphaType* at) const;

    SkColorFilterBase::Type type() const override {

        return SkColorFilterBase::Type::kWorkingFormat;

    bool appendStages(const SkStageRec& rec, bool shaderIsOpaque) const override;

    SkPMColor4f onFilterColor4f(const SkPMColor4f& origColor,

                                SkColorSpace* rawDstCS) const override;

    bool onIsAlphaUnchanged() const override;

    sk_sp<SkColorFilter> child() const { return fChild; }

private:

    friend void ::SkRegisterWorkingFormatColorFilterFlattenable();

    SK_FLATTENABLE_HOOKS(SkWorkingFormatColorFilter)

    void flatten(SkWriteBuffer& buffer) const override;

    sk_sp<SkColorFilter> fChild;

    skcms_TransferFunction fTF;

    bool fUseDstTF = true;

    skcms_Matrix3x3 fGamut;

    bool fUseDstGamut = true;

    SkAlphaType fAT;

    bool fUseDstAT = true;

};

#endif