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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_GRAPH_STATE_HEADER_INCLUDED__
#define __PDF_GRAPH_STATE_HEADER_INCLUDED__

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

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

#ifndef __PDF_GRAPH_DASH_HEADER_INCLUDED__
#include "Dash.hh"
#endif

#include <iosfwd>

namespace pdf { namespace graph {

class CState
{
public :
    enum ECapStyle  { butt_cap = 0,    round_cap = 1,  square_cap = 2 } ;
    enum EJoinStyle { mitter_join = 0, round_join = 1, bevel_join = 2 } ;

private :
    double      m_line_width ;
    ECapStyle   m_line_cap ;
    EJoinStyle  m_line_join ;
    double      m_miter_limit ;
    CDash       m_pattern ;
    
    // there should be a rendering intent here, but I don't understand what it
    // is.
    
    double m_flatness ;
    
    util::CMatrix2D m_transform ;
    
    util::CColour   m_line_colour, m_fill_colour ;

public :
    CState( ) ;
    CState( double line_width, ECapStyle line_cap = butt_cap,
            EJoinStyle line_join = mitter_join, double miter_limit = 10.0f,
            const CDash& dash = CDash( ), double flatness = 1.0f ) ;
    CState( const CState& state ) ;
    ~CState( ) ;

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

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

    const util::CColour& LineColour( ) const ;
    void LineColour( const util::CColour& colour ) ; 

    const util::CColour& FillColour( ) const ;
    void FillColour( const util::CColour& colour ) ; 
} ;

/*
inline std::ostream& operator<<( std::ostream& os, const CState& state )
{
    return state.Print( os ) ;
}
*/
} } // end of namespace

#endif

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