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PdfCanvas.cpp

/***************************************************************************
 *   Copyright (C) 2006 by Dominik Seichter                                *
 *   domseichter@web.de                                                    *
 *                                                                         *
 *   This program 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 program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this program; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include "PdfCanvas.h"

#include "PdfDictionary.h"
#include "PdfName.h"
#include "PdfColor.h"
#include "PdfStream.h"
#include "PdfDefinesPrivate.h"

namespace PoDoFo {

PdfArray PdfCanvas::s_procset;

00033 const PdfArray & PdfCanvas::GetProcSet()
{
    if( s_procset.empty() ) 
    {
        s_procset.push_back( PdfName( "PDF" ) );
        s_procset.push_back( PdfName( "Text" ) );
        s_procset.push_back( PdfName( "ImageB" ) );
        s_procset.push_back( PdfName( "ImageC" ) );
        s_procset.push_back( PdfName( "ImageI" ) );
    }

    return s_procset;
}

00047 void PdfCanvas::AddColorResource( const PdfColor & rColor )
{
    PdfObject* pResource = GetResources();
    
    if( !pResource )
    {
        PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
    }

      switch( rColor.GetColorSpace() )
      {
            case ePdfColorSpace_Separation:
            {
                  std::string csPrefix( "ColorSpace" );
                  std::string csName = rColor.GetName();
                  std::string temp( csPrefix + csName );
            
                  if ( 
                        ! pResource->GetDictionary().HasKey( "ColorSpace" )   ||
                        ! pResource->GetDictionary().GetKey( "ColorSpace" )->GetDictionary().HasKey( csPrefix + csName )
                )
                  {
                        // Build color-spaces for separation
                PdfObject* csp = rColor.BuildColorSpace( GetContents()->GetOwner() );
 
                AddResource( csPrefix + csName, csp->Reference(), PdfName("ColorSpace") );
                  }
            }
            break;

            case ePdfColorSpace_CieLab:
            {
                  if ( 
                        ! pResource->GetDictionary().HasKey( "ColorSpace" )   ||
                        ! pResource->GetDictionary().GetKey( "ColorSpace" )->GetDictionary().HasKey( "ColorSpaceLab" )
                     )
                  {
                        // Build color-spaces for CIE-lab
                PdfObject* csp = rColor.BuildColorSpace( GetContents()->GetOwner() );

                        AddResource( "ColorSpaceCieLab", csp->Reference(), PdfName("ColorSpace") );
                  }
            }
            break;

        case ePdfColorSpace_DeviceGray:
        case ePdfColorSpace_DeviceRGB:
        case ePdfColorSpace_DeviceCMYK:
            // No colorspace needed
        case ePdfColorSpace_Unknown:
            default:
            break;
      }
}

00102 void PdfCanvas::AddResource( const PdfName & rIdentifier, const PdfReference & rRef, const PdfName & rName )
{
    if( !rName.GetLength() || !rIdentifier.GetLength() )
    {
        PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
    }

    PdfObject* pResource = this->GetResources();
    
    if( !pResource )
    {
        PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
    }

    if( !pResource->GetDictionary().HasKey( rName ) )
    {
        pResource->GetDictionary().AddKey( rName, PdfDictionary() );
    }

    // Peter Petrov: 18 December 2008. Bug fix
      if (ePdfDataType_Reference == pResource->GetDictionary().GetKey( rName )->GetDataType())
    {
        PdfObject *directObject = pResource->GetOwner()->GetObject(pResource->GetDictionary().GetKey( rName )->GetReference());

        if (0 == directObject)
        {
            PODOFO_RAISE_ERROR( ePdfError_NoObject );
        }

        if( !directObject->GetDictionary().HasKey( rIdentifier ) )
            directObject->GetDictionary().AddKey( rIdentifier, rRef );
    }else
    {

        if( !pResource->GetDictionary().GetKey( rName )->GetDictionary().HasKey( rIdentifier ) )
            pResource->GetDictionary().GetKey( rName )->GetDictionary().AddKey( rIdentifier, rRef );
    }
}

};


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