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Descriptor.hh

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/*
    libpdf++: a C++ Free library to generate PDF file
    Copyright (C) 2002 Nestal Wan

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#ifndef __PDF_FONT_DESCRIPTOR_HEADER_INCLUDED__
#define __PDF_FONT_DESCRIPTOR_HEADER_INCLUDED__

#ifndef __PDF_FONT_FLAGS_HEADER_INCLUDED__
#include "Flags.hh"
#endif

#include <boost/cstdint.hpp>

#include <string>
#include <vector>
#include <iosfwd>
#include <utility>

namespace freetype
{
    class CFace ;
}

namespace pdf {

namespace core
{
    class CFile ;
    class CObjRef ;
}

namespace font {

// forward declaration
class CFlags ;

class CDescriptor
{
public :
    typedef const int* WidthIt ;
    
private :
    std::string m_name ;
    
    boost::int32_t m_flags ;
    
    int m_bbox[4] ;
    
    double m_italic_angle ;
    
    int m_ascent ;
    
    int m_descent ;
    
    int m_cap_height ;

    int m_stem_v ;
    
    const std::string m_filename ;

    static const int char_count = 256 ;

    int m_widths[char_count] ;

//  int m_avg_width ;
    
//  int m_max_width ;

public :
    CDescriptor( const std::string& filename, int index = 0,
                 CFlags::EFlags flag = CFlags::serif ) ;
    ~CDescriptor( ) ;
    
    void FromFont( freetype::CFace& face, CFlags::EFlags flag = CFlags::serif );
    
    const core::CObjRef Write( core::CFile& file ) const ;

//  void SetWidth( int *widths, int count ) ;

    const std::string& Name( ) const ;

    double GlyphWidth( wchar_t glyph ) const ;

    int CharCount( ) const { return char_count ; }

    typedef std::pair<WidthIt, WidthIt> WidthPair ;
    WidthPair Widths( ) const ;

private :
//  void Init( freetype::CFace& face, CFlags::EFlags flag = CFlags::serif ) ;
    static int EM2Glyph( int em_unit, const freetype::CFace& face ) ;
} ;

} } // end of namespace

#endif

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