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Diffstat (limited to 'kbarcode/purepostscript.cpp')
| -rw-r--r-- | kbarcode/purepostscript.cpp | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/kbarcode/purepostscript.cpp b/kbarcode/purepostscript.cpp new file mode 100644 index 0000000..0b543e6 --- /dev/null +++ b/kbarcode/purepostscript.cpp @@ -0,0 +1,240 @@ +/*************************************************************************** + purepostscript.cpp - description + ------------------- + begin : Mon Jan 2 2006 + copyright : (C) 2006 by Dominik Seichter + email : domseichter@web.de + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + ***************************************************************************/ + +#include "purepostscript.h" +#include "barkode.h" + +#include <stdlib.h> + +#include <qdom.h> +#include <qfile.h> +#include <qtextstream.h> + +#include <kstandarddirs.h> +#include <ktempfile.h> + +#define MAX_LINE_LENGTH 256 +#define BEGIN_TEMPLATE "--BEGIN TEMPLATE--" +#define END_TEMPLATE "--END TEMPLATE--" + +QString PurePostscriptBarcode::s_path = QString::null; + +PurePostscriptOptions::PurePostscriptOptions() + : BarkodeEngineOptions() +{ + defaults(); +} + +const BarkodeEngineOptions& PurePostscriptOptions::operator=( const BarkodeEngineOptions& rhs ) +{ + const PurePostscriptOptions* ps = (dynamic_cast<const PurePostscriptOptions*>(&rhs)); + + m_check = ps->m_check; + + return *this; +} + +void PurePostscriptOptions::defaults() +{ + m_check = false; +} + +void PurePostscriptOptions::load( const QDomElement* tag ) +{ + m_check = (bool)tag->attribute( "pure.check", "0" ).toInt(); +} + +void PurePostscriptOptions::save( QDomElement* tag ) +{ + tag->setAttribute( "pure.check", (int)m_check ); +} + +PurePostscriptBarcode::PurePostscriptBarcode() + : PixmapBarcode() +{ + bool append = false; + QString line; + + if( s_path.isNull() ) + { + qDebug( "Cannot locate barcode writer in pure postscript." ); + return; + } + + QFile pureFile( s_path ); + if( pureFile.open( IO_ReadOnly ) ) + { + while( pureFile.readLine( line, MAX_LINE_LENGTH ) != -1 ) + { + if( append ) + { + if( line.contains( END_TEMPLATE ) ) + break; + + m_program.append( line ); + } + + if( !append && line.contains( BEGIN_TEMPLATE ) ) + append = true; + } + pureFile.close(); + } +} + +PurePostscriptBarcode::~PurePostscriptBarcode() +{ +} + +void PurePostscriptBarcode::init() +{ + if( s_path.isNull() ) + { + // first look at the default location + const char* default_barcode = "/usr/share/libpostscriptbarcode/barcode.ps"; + if( QFile::exists( default_barcode ) ) + s_path = default_barcode; + else + s_path = locate( "data", "kbarcode/barcode.ps" ); + } + + if( !QFile::exists( s_path ) ) + s_path = QString::null; +} + +#define START_TOKEN "% --" +#define BEGIN_ENCODER "BEGIN ENCODER " +#define DESCRIPTION "DESC: " +#define EXAMPLE "EXAM: " + +void PurePostscriptBarcode::initInfo( TBarcodeInfoList* info ) +{ + PurePostscriptBarcode::init(); + + QFile pureFile( s_path ); + if( pureFile.open( IO_ReadOnly ) ) + { + QString encoder; + QString description; + QString example; + QString line; + + while( pureFile.readLine( line, MAX_LINE_LENGTH ) != -1 ) + { + /* + % --BEGIN ENCODER ean13-- + % --DESC: EAN-13 + % --EXAM: 977147396801 + */ + + if( line.startsWith( START_TOKEN ) ) + { + // remove all whitespaces on the line ending (and '-') + line = line.stripWhiteSpace(); + + line = line.right( line.length() - QString( START_TOKEN ).length() ); + if( line.startsWith( BEGIN_ENCODER ) ) + { + encoder = line.right( line.length() - QString( BEGIN_ENCODER ).length() ); + + if( encoder.endsWith( "--" ) ) + encoder = encoder.left( encoder.length() - 2 ); + } + else if( line.startsWith( DESCRIPTION ) ) + description = line.right( line.length() - QString( DESCRIPTION ).length() ); + else if( line.startsWith( EXAMPLE ) ) + { + example = line.right( line.length() - QString( EXAMPLE ).length() ); + + // we should have a complete encoder now. + info->append( Barkode::createInfo( QString("ps_") + encoder, description, PURE_POSTSCRIPT, PUREADV | COLORED ) ); + } + } + } + pureFile.close(); + } +} + +bool PurePostscriptBarcode::hasPurePostscriptBarcode() +{ + return !s_path.isNull(); +} + +void PurePostscriptBarcode::createProgram( QString & prg ) +{ + const PurePostscriptOptions* options = (dynamic_cast<const PurePostscriptOptions*>(barkode->engine()->options())); + QString type = barkode->type().right( barkode->type().length() - 3 ); + QString opt; + + opt.sprintf( "%s %s barcolor=%02X%02X%02X showbackground backgroundcolor=%02X%02X%02X textcolor=%02X%02X%02X", + barkode->textVisible() ? "includetext" : "", + options && options->checksum() ? "includecheck" : "", + barkode->foreground().red(), barkode->foreground().green(), barkode->foreground().blue(), + barkode->background().red(), barkode->background().green(), barkode->background().blue(), + barkode->textColor().red(), barkode->textColor().green(), barkode->textColor().blue() + ); + + prg = "%!PS-Adobe-2.0 EPSF-2.0\n%%EndComments\n%%EndProlog\n"; + prg += m_program; + prg += QString("20 20 moveto\n(%1) (%2) %3 barcode\n") + .arg( barkode->parsedValue() ) + .arg( opt ).arg( type ); +} + +QRect PurePostscriptBarcode::bbox( const char* postscript, long postscript_size ) +{ + const char* gs_bbox = "gs -sDEVICE=bbox -sNOPAUSE -q %1 -c showpage quit 2>&1"; + + char* buffer = NULL; + long len = 0; + QRect size; + + KTempFile psfile( QString::null, ".ps" ); + psfile.file()->writeBlock( postscript, postscript_size ); + psfile.file()->close(); + + if( !readFromPipe( QString( gs_bbox ).arg( psfile.file()->name() ).latin1(), &buffer, &len ) || !len ) + { + psfile.unlink(); + return QRect( 0, 0, 0, 0 ); + } + else + psfile.unlink(); + + size = PixmapBarcode::bbox( buffer, len ); + free( buffer ); + + return size; +} + +bool PurePostscriptBarcode::createPostscript( char** postscript, long* postscript_size ) +{ + QString cmd; + + if( m_program.isEmpty() ) + return false; + + createProgram( cmd ); + + *postscript_size = cmd.length(); + *postscript = (char*)malloc( sizeof(char) * *postscript_size ); + if( !*postscript ) + return false; + + memcpy( *postscript, cmd.latin1(), *postscript_size ); + + return true; +} |