fontengine.h

//##################################################################################################
//
// Copyright (c) 2024 Beijing Qiongqi Tech Co.,Ltd. All rights reserved. 
 
// This source code is confidential and proprietary to Beijing Qiongqi Tech Co.,Ltd(The Holder). 
// Any unauthorized use, copying, modification, or distribution of the code is strictly prohibited. 
// Any user shall obtain authorizaition from the Holder before modifying the source code. And the user shall not
// sublicense, sell, distribute, or transfer the source code, whether in original or modified form, to any third party
// without the prior written consent of the Holder.
 
// This copyright notice and permission grant shall be included in all copies or substantial portions of the source code.
 
// Author  Cumulia Illustrator
// Date    2025-08-05
// Version V2.1.0
//##################################################################################################
 
#pragma once
 
#include <cilcore.h>
 
#include <memory>
#include <vector>
#include <string>
#include <map>
 
namespace cil
{
    class Glyph;
    class Font;
 
    class FontEngine
    {
    public:
        static void addFamily(const std::string& fontFamily, const std::string& filename);
        static void removeFamily(const std::string& fontFamily);
        static std::vector<std::string> families();
        static std::string defaultFamily();
        static void setDefaultFamily(const std::string& fontFamily);
 
    private:
        static FontEngine* s_instance;
        std::map<std::string, std::string> m_familyMap;
        std::string m_defaultFamily;
        std::vector<std::shared_ptr<Font>> m_fonts;
        std::shared_ptr<Font> m_current;
 
    public:
        static FontEngine* getInstance();
        void setFont(const int size, const std::string& family);
        std::shared_ptr<Glyph> getGlyph(wchar_t character);
        int lineSpacing();
        std::shared_ptr<Vector2i> textExtent(const std::wstring& text);
 
    private:
        FontEngine();
        ~FontEngine();
 
        std::shared_ptr<Font> getFont(const int size, const std::string& family);
    };
}