FontRendererOpenGL.h

#pragma once
#include "OpenGLWrapper.h"

namespace ParaEngine
{
    class CSpriteRenderer;

    class CFontRendererOpenGL : public GLWrapper::Label
    {
    public:
        static CFontRendererOpenGL* create(const std::string& sFontName, int nFontSize);
        CFontRendererOpenGL();
        virtual ~CFontRendererOpenGL();
    public:
        bool DrawTextA(CSpriteRenderer* pSprite, const char* strText, RECT& rect, DWORD dwTextFormat, DWORD textColor);
        bool DrawTextW(CSpriteRenderer* pSprite, const char16_t* strText, RECT& rect, DWORD dwTextFormat, DWORD textColor);

        void SetUTF16Text(const char16_t* strText);

        bool UpdateLetterSprites();

        void RenderLetterSprites(CSpriteRenderer* pSprite, DWORD color);

        void DoRender(CSpriteRenderer* pSprite, DWORD color);

        virtual float GetFontScaling() const;

    protected:
        int m_nFontSize;
        // to minimize the total number of font used, the real font-size may be smaller than the m_nFontSize, and a scale factor is used during rendering. 
        int m_nRealFontSize;
        float m_fFontScaling;
        bool m_bUseCustomShader;
    };
}