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sglBitmapFont.hpp

/*****************************************************************************
 * SGL: A Scene Graph Library
 *
 * Copyright (C) 1997-2001  Scott McMillan   All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *****************************************************************************
 *     File: sglBitmapFont.hpp
 *   Author: Tom Stimson
 *  Created: 20 April 2000
 *  Summary: Class to render text strings.
 *****************************************************************************/

#ifndef __SGL_BITMAP_FONT_HPP
#define __SGL_BITMAP_FONT_HPP

#include <sgl.h>
#include <sglObject.hpp>
#include <string>

//============================================================================

class SGL_DLL_API sglBitmapFont : public sglObject
{
public:
   sglBitmapFont() {};
   virtual ~sglBitmapFont() {};

   virtual sglBitmapFont* clone() const = 0;

   void rasterString(const string &str) const
        { rasterString(str.c_str(), str.size()); }

   virtual void rasterString(const char *str, int len = -1) const = 0;

   virtual unsigned int getHeight() const = 0;

   virtual unsigned int getDescent() const = 0;

   virtual unsigned int getCharWidth(char c) const = 0;

   virtual unsigned int getStringWidth(const string &str) const;

   static void setDefaultFont(sglBitmapFont* font);

   static sglBitmapFont* getDefaultFont() { return s_default_font; }

private:  // not implemented
   sglBitmapFont(const sglBitmapFont &);
   sglBitmapFont &operator=(const sglBitmapFont &);

private:
   static sglBitmapFont *s_default_font;
};


//============================================================================

class SGL_DLL_API sglBitmapFont8x13 : public sglBitmapFont
{
public:
   sglBitmapFont8x13();

   ~sglBitmapFont8x13();

   virtual sglBitmapFont* clone() const;

   virtual void rasterString(const char *str, int len = -1) const;

   virtual unsigned int getHeight() const;

   virtual unsigned int getDescent() const;

   virtual unsigned int getCharWidth(char c) const;

private:  // not implemented
   sglBitmapFont8x13(const sglBitmapFont8x13 &);
   sglBitmapFont8x13 &operator=(const sglBitmapFont8x13 &);

private:
   GLuint  m_list_base;
};


//============================================================================

#if !defined(WIN32) && !defined( MAC_OSX )
# include <X11/Xlib.h>


class SGL_DLL_API sglBitmapFontGLX : public sglBitmapFont
{
public:
   sglBitmapFontGLX(Font font);

   ~sglBitmapFontGLX();

   virtual sglBitmapFont* clone() const;

   virtual void rasterString(const char *str, int len = -1) const;

   virtual unsigned int getHeight() const;

   virtual unsigned int getDescent() const;

   virtual unsigned int getCharWidth(char c) const;

   virtual unsigned int getStringWidth(const string &str) const;

private:  // not implemented
   sglBitmapFontGLX();
   sglBitmapFontGLX(const sglBitmapFontGLX &);
   sglBitmapFontGLX &operator=(const sglBitmapFontGLX &);

private:
   Font         m_font;
   GLuint       m_list_base;
   XFontStruct *m_font_info;
};
#endif


#endif

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