ThemeManagerPanel.h

#pragma once
 
#include "LkEngine/Renderer/UI/Panel.h"
 
 
namespace LkEngine {
 
    enum class ETheme
    {
        Dark,
        Light,
        GruvboxMaterial,
        COUNT,
    };
    LK_ENUM_RANGE_BY_COUNT(ETheme, ETheme::COUNT);
 
    namespace Enum 
    {
        static const char* ToString(const ETheme Theme);
    }
 
    class LThemeManagerPanel : public IPanel
    {
    public:
        LThemeManagerPanel();
        ~LThemeManagerPanel() = default;
 
        virtual void RenderUI(bool& IsOpen) override;
        virtual void Render() override {}
 
        static void SetTheme(const ETheme Theme);
        static std::string GetCurrentThemeName() { return CurrentThemeName; }
 
        static void LoadDefaultTheme();
 
        static void SetSelectorEnabled(const bool InEnabled);
        FORCEINLINE static bool IsSelectorEnabled() { return bSelectorEnabled; }
 
        static bool SaveCurrentTheme();
        static bool LoadSavedTheme(std::string_view ThemeName);
 
        static void OnMouseButtonPressed(const FMouseButtonData& ButtonData);
 
    public:
        inline static std::string_view THEME_FILE_EXTENSION = "lktheme";
    private:
        virtual void SerializeToYaml(YAML::Emitter& Out) const override;
        virtual void DeserializeFromYaml(const YAML::Node& Data) override;
 
        static void LoadTheme(const ETheme Theme, ImVec4* Colors);
        void LoadThemeFromYaml(const YAML::Node& Data);
 
        void UI_SaveThemePopup();
        void UI_SelectThemePopup();
 
        void UI_ColorPicker();
 
        static bool IsDefaultTheme(std::string_view InThemeName)
        {
            for (const ETheme Theme : TEnumRange<ETheme>())
            {
                if (InThemeName == Enum::ToString(Theme))
                {
                    return true;
                }
            }
 
            return false;
        }
 
    private:
        inline static std::string CurrentThemeName{};
        inline static bool bSelectorEnabled = false;
        inline static std::filesystem::path ThemesDirectory{};
 
        friend class LEditorLayer;
 
        LPANEL(LThemeManagerPanel);
    };
 
    namespace Enum      
    {
        static const char* ToString(const ETheme Theme)
        {
            switch (Theme)
            {
                case ETheme::Dark:            return "Dark";
                case ETheme::Light:           return "Light";
                case ETheme::GruvboxMaterial: return "GruvboxMaterial";
                case ETheme::COUNT:           LK_CORE_VERIFY(false, "Enum::ToString(const ETheme) failed");
            }
 
            LK_CORE_VERIFY(false, "Enum::ToString(const ETheme) failed for: {}", static_cast<int>(Theme));
            return nullptr;
        }
    }
 
}