wartank/vendor/github.com/AllenDang/imgui-go/WrapperConverter.h

#pragma once

#include "imgui.h"
#include "imguiWrapperTypes.h"

extern void importValue(bool &out, IggBool const &in);
extern void exportValue(IggBool &out, bool const &in);

extern void importValue(float &out, IggFloat const &in);
extern void exportValue(IggFloat &out, float const &in);

extern void importValue(ImVec2 &out, IggVec2 const &in);
extern void exportValue(IggVec2 &out, ImVec2 const &in);

extern void importValue(ImVec4 &out, IggVec4 const &in);
extern void exportValue(IggVec4 &out, ImVec4 const &in);

template <typename ImGuiType, typename IggType> class TypeWrapper {
public:
  TypeWrapper(IggType *iggValue) : iggValue(iggValue), imguiValue(nullptr) {
    if (iggValue != nullptr) {
      imguiValue = &imguiBuffer;
      importValue(*imguiValue, *iggValue);
    }
  }

  TypeWrapper(IggType const *constIggValue) : iggValue(nullptr), imguiValue(nullptr) {
    if (constIggValue != nullptr) {
      imguiValue = &imguiBuffer;
      importValue(*imguiValue, *constIggValue);
    }
  }

  ~TypeWrapper() {
    if (iggValue != nullptr) {
      exportValue(*iggValue, *imguiValue);
    }
  }

  operator ImGuiType *() { return imguiValue; }

private:
  IggType *iggValue;
  ImGuiType *imguiValue;
  ImGuiType imguiBuffer;
};

typedef TypeWrapper<float, IggFloat> FloatWrapper;
typedef TypeWrapper<bool, IggBool> BoolWrapper;
typedef TypeWrapper<ImVec2, IggVec2> Vec2Wrapper;
typedef TypeWrapper<ImVec4, IggVec4> Vec4Wrapper;