FontOpenGL.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_FontOpenGL_h__
#define __opengl_FontOpenGL_h__

namespace fe
{
namespace ext
{

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

    @ingroup opengl
*//***************************************************************************/
class FE_DL_EXPORT FontOpenGL: public FontI,
        public Initialize<FontOpenGL>
{
    public:
                FontOpenGL(void);
virtual         ~FontOpenGL(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)
                {
#if FE_2DGL==FE_2D_X_GFX
                    return XTextWidth(m_pFontStruct,
                            a_string.c_str(),a_string.length());
#else
                    //* TODO Win32
                    return 0;
#endif
                }

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

    private:

        I32             m_fontBase;
        I32             m_fontRange;
        I32             m_fontAscent;
        I32             m_fontDescent;
#if FE_2DGL==FE_2D_X_GFX
        XFontStruct*    m_pFontStruct;
#endif

        Real                m_multiplication;
};

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

#endif /* __opengl_FontOpenGL_h__ */