FontFreeTypeGL.h

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/*  Copyright (C) 2003-2021 Free Electron Organization
    Any use of this software requires a license.  If a valid license
    was not distributed with this file, visit freeelectron.org. */

/** @file */

#ifndef __opengl_FontFreeTypeGL_h__
#define __opengl_FontFreeTypeGL_h__

namespace fe
{
namespace ext
{

/**************************************************************************//**
    @brief OpenGL-specific implementations for FontI

    @ingroup opengl
*//***************************************************************************/
class FE_DL_EXPORT FontFreeTypeGL: public FontI,
        public Initialize<FontFreeTypeGL>
{
    public:
                FontFreeTypeGL(void);
virtual         ~FontFreeTypeGL(void);

        void    initialize(void);

virtual I32     fontHeight(I32* a_pAscent,I32* a_pDescent)
                {
                    if(a_pAscent)
                    {
                        *a_pAscent=m_fontAscent;
                    }
                    if(a_pDescent)
                    {
                        *a_pDescent=m_fontDescent;
                    }

                    return m_fontAscent+m_fontDescent;
                }
virtual I32     pixelWidth(String a_string);

virtual void    drawAlignedText(sp<Component> a_spDrawComponent,
                    const SpatialVector& a_location,
                    const String a_text,const Color &a_color);

    private:
        void    add_text(const SpatialVector& a_location,
                    const String a_text,const Color &a_color);

        String              m_freetypePath;
        String              m_fontName;
        Real                m_fontSize;
        BWORD               m_fixedWidth;
        I32                 m_maxWidth;

        I32                 m_fontAscent;
        I32                 m_fontDescent;

        Real                m_multiplication;

        texture_atlas_t*    m_pAtlas;
        texture_font_t*     m_pFont;
        vertex_buffer_t*    m_pBuffer;
        GLuint              m_shader;
};

} /* namespace ext */
} /* namespace fe */

#endif /* __opengl_FontFreeTypeGL_h__ */