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State.hh

/*
    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_TEXT_STATE_HEADER_INCLUDED__
#define __PDF_TEXT_STATE_HEADER_INCLUDED__

#ifndef __PDF_UTIL_MATRIX2D_HEADER_INCLUDED__
#include "util/Matrix2D.hh"
#endif

#ifndef __PDF_UTIL_COLOUR_HEADER_INCLUDED__
#include "util/Colour.hh"
#endif

#include <iosfwd>
#include <algorithm>

namespace pdf {

namespace font
{
    class CFont ;
}

namespace text {

class CState
{
private :
    const font::CFont *m_font ;     


    double   m_font_size ;          
    double   m_char_space ;         
    double   m_word_space ;         
    double   m_scale ;              
    double   m_leading ;            
    int      m_render ;             
    double   m_rise ;               

    util::CColour   m_colour ;      

public :
    CState( ) ;
    CState( const font::CFont *font, double font_size,
                double leading = 0, double char_space = 0,
                double word_space = 0, double scale = 1.0f,
                int render = 0, double rise = 0 ) ;
    CState( const CState& text ) ;

    // assignments
    CState& operator=( const CState& state ) ;
    void Swap( CState& state ) ;

    std::ostream& Write( std::ostream& os, const CState& prev ) const ; 

    double Leading( ) const { return m_leading ; }

    // colour functions
    void Colour( const util::CColour& colour ) ;
    const util::CColour Colour( ) const ;
    
    const font::CFont* Font( ) const ;
    double Scale( ) const ;
    double FontSize( ) const ;
} ;

} } // end of namespace

namespace std
{
    template <>
    inline void swap( pdf::text::CState& s1, pdf::text::CState& s2 )
    {
        s1.Swap( s2 ) ;
    }
} // end of namespace std

#endif

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