textengine.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    2024-05-01
// Version V1.0.0
//##################################################################################################
 
#pragma once
 
#include <cilcore.h>
 
#include <memory>
#include <vector>
#include <string>
 
namespace cil
{
    class Glyph;
    class Font;
 
    class TextEngine
    {
    private:
        static TextEngine* s_instance;
        std::vector<std::shared_ptr<Font>> m_fonts;
        std::shared_ptr<Font> m_current;
 
    public:
        static TextEngine* getInstance();
        void set(const int fontSize, const std::shared_ptr<Color3f>& fontColor, const std::string& fontFile);
        std::shared_ptr<Glyph> getGlyph(wchar_t character);
        int lineSpacing();
        std::shared_ptr<Vector2i> textExtent(const std::wstring& text);
 
    private:
        TextEngine();
        ~TextEngine();
 
        std::shared_ptr<Font> getFont(const int fontSize, const std::shared_ptr<Color3f>& fontColor, const std::string& fontFile);
    };
}