/*

 * Copyright 2024 Google Inc.

 *

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

 * found in the LICENSE file.

 */

#ifndef SkSVGFeComponentTransfer_DEFINED

#define SkSVGFeComponentTransfer_DEFINED

#include "include/core/SkRefCnt.h"

#include "include/private/base/SkAPI.h"

#include "modules/svg/include/SkSVGFe.h"

#include "modules/svg/include/SkSVGHiddenContainer.h"

#include "modules/svg/include/SkSVGNode.h"

#include "modules/svg/include/SkSVGTypes.h"

#include <cstdint>

#include <vector>

class SkImageFilter;

class SkSVGFilterContext;

class SkSVGRenderContext;

class SkSVGFeFunc final : public SkSVGHiddenContainer {

public:

    static sk_sp<SkSVGFeFunc> MakeFuncA() {

        return sk_sp<SkSVGFeFunc>(new SkSVGFeFunc(SkSVGTag::kFeFuncA));

    }

    static sk_sp<SkSVGFeFunc> MakeFuncR() {

        return sk_sp<SkSVGFeFunc>(new SkSVGFeFunc(SkSVGTag::kFeFuncR));

    }

    static sk_sp<SkSVGFeFunc> MakeFuncG() {

        return sk_sp<SkSVGFeFunc>(new SkSVGFeFunc(SkSVGTag::kFeFuncG));

    }

    static sk_sp<SkSVGFeFunc> MakeFuncB() {

        return sk_sp<SkSVGFeFunc>(new SkSVGFeFunc(SkSVGTag::kFeFuncB));

    }

    SVG_ATTR(Amplitude  , SkSVGNumberType,                          1)

    SVG_ATTR(Exponent   , SkSVGNumberType,                          1)

    SVG_ATTR(Intercept  , SkSVGNumberType,                          0)

    SVG_ATTR(Offset     , SkSVGNumberType,                          0)

    SVG_ATTR(Slope      , SkSVGNumberType,                          1)

    SVG_ATTR(TableValues, std::vector<SkSVGNumberType>,            {})

    SVG_ATTR(Type       , SkSVGFeFuncType, SkSVGFeFuncType::kIdentity)

    std::vector<uint8_t> getTable() const;

protected:

    bool parseAndSetAttribute(const char*, const char*) override;

private:

    SkSVGFeFunc(SkSVGTag tag) : INHERITED(tag) {}

    using INHERITED = SkSVGHiddenContainer;

};

class SK_API SkSVGFeComponentTransfer final : public SkSVGFe {

public:

    static constexpr SkSVGTag tag = SkSVGTag::kFeComponentTransfer;

    static sk_sp<SkSVGFeComponentTransfer> Make() {

        return sk_sp<SkSVGFeComponentTransfer>(new SkSVGFeComponentTransfer());

    }

protected:

    sk_sp<SkImageFilter> onMakeImageFilter(const SkSVGRenderContext&,

                                           const SkSVGFilterContext&) const override;

    std::vector<SkSVGFeInputType> getInputs() const override { return {this->getIn()}; }

private:

    SkSVGFeComponentTransfer() : INHERITED(tag) {}

    using INHERITED = SkSVGFe;

};

#endif //  SkSVGFeComponentTransfer_DEFINED