/*

 * Copyright 2019 Google Inc.

 *

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

 * found in the LICENSE file.

 */

#include "modules/skottie/src/effects/Effects.h"

#include "include/private/SkTPin.h"

#include "modules/skottie/src/Adapter.h"

#include "modules/skottie/src/SkottieValue.h"

#include "modules/sksg/include/SkSGColorFilter.h"

#include "modules/sksg/include/SkSGPaint.h"

#include "src/utils/SkJSON.h"

namespace skottie {

namespace internal {

namespace  {

class FillAdapter final : public AnimatablePropertyContainer {

public:

    static sk_sp<FillAdapter> Make(const skjson::ArrayValue& jprops,

                                   sk_sp<sksg::RenderNode> layer,

                                   const AnimationBuilder& abuilder) {

        return sk_sp<FillAdapter>(new FillAdapter(jprops, std::move(layer), abuilder));

    }

    const auto& node() const { return fFilterNode; }

private:

    FillAdapter(const skjson::ArrayValue& jprops,

                sk_sp<sksg::RenderNode> layer,

                const AnimationBuilder& abuilder)

        : fColorNode(sksg::Color::Make(SK_ColorBLACK))

        , fFilterNode(sksg::ModeColorFilter::Make(std::move(layer),

                                                  fColorNode,

                                                  SkBlendMode::kSrcIn)) {

        enum : size_t {

         // kFillMask_Index = 0,

         // kAllMasks_Index = 1,

               kColor_Index = 2,

         //   kInvert_Index = 3,

         // kHFeather_Index = 4,

         // kVFeather_Index = 5,

             kOpacity_Index = 6,

        };

        EffectBinder(jprops, abuilder, this)

            .bind(  kColor_Index, fColor  )

            .bind(kOpacity_Index, fOpacity);

        abuilder.dispatchColorProperty(fColorNode);

    }

    void onSync() override {

        const auto c = static_cast<SkColor>(fColor);

        const auto a =

                sk_float_round2int_no_saturate(SkColorGetA(c) * SkTPin(fOpacity, 0.0f, 1.0f));

        fColorNode->setColor(SkColorSetA(c, a));

    }

    const sk_sp<sksg::Color>           fColorNode;

    const sk_sp<sksg::ModeColorFilter> fFilterNode;

    VectorValue fColor;

    ScalarValue fOpacity = 1;

};

} // namespace

sk_sp<sksg::RenderNode> EffectBuilder::attachFillEffect(const skjson::ArrayValue& jprops,

                                                        sk_sp<sksg::RenderNode> layer) const {

    return fBuilder->attachDiscardableAdapter<FillAdapter>(jprops, std::move(layer), *fBuilder);

}

} // namespace internal

} // namespace skottie