Initial implementation of Zint barcode backend.

2017-06-02 22:39:44 -04:00
parent cb9013cdd5
commit 3e2b40c000
8 changed files with 325 additions and 38 deletions
@@ -0,0 +1,147 @@
+/*  Zint.cpp
+ *
+ *  Copyright (C) 2017  Jim Evins <evins@snaught.com>
+ *
+ *  This file is part of gLabels-qt.
+ *
+ *  gLabels-qt 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  gLabels-qt 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 General Public License
+ *  along with gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if HAVE_GNU_BARCODE
+
+#include "Zint.h"
+
+#include <QtDebug>
+#include <zint.h>
+
+
+namespace
+{
+	const int W_PTS_DEFAULT = 144;
+	const int H_PTS_DEFAULT = 72;
+}
+
+
+namespace glabels
+{
+	namespace Zint
+	{
+
+
+		//
+		// Zint barcode data validation method
+		//
+		bool Base::validate( const std::string& rawData )
+		{
+			return rawData.size() != 0;
+		}
+
+		
+		//
+		// Zint barcode data vectorization method
+		//
+		void Base::vectorize( const std::string& encodedData,
+		                      const std::string& displayText,
+		                      const std::string& cookedData,
+		                      double&            w,
+		                      double&            h )
+		{
+			/*
+			 * First encode using Zint barcode library.
+			 */
+			if ( w == 0 )
+			{
+				w = W_PTS_DEFAULT;
+			}
+			if ( h == 0 )
+			{
+				h = H_PTS_DEFAULT;
+			}
+
+			zint_symbol* symbol = ZBarcode_Create();;
+
+			symbol->symbology = symbology;
+
+			if ( ZBarcode_Encode( symbol, (unsigned char*)(cookedData.c_str()), 0 ) != 0 )
+			{
+				qDebug() << "Zint::ZBarcode_Encode: " << QString(symbol->errtxt);
+				setIsDataValid( false );
+				return;
+			}
+
+			symbol->show_hrt = showText();
+
+			if ( ZBarcode_Render( symbol, (float)w, (float)h ) == 0 )
+			{
+				qDebug() << "Zint::ZBarcode_Render: " << QString(symbol->errtxt);
+				setIsDataValid( false );
+				return;
+			}
+
+
+			/*
+			 * Now do the actual vectorization.
+			 */
+			zint_render *render = symbol->rendered;
+
+			setWidth( render->width );
+			setHeight( render->height );
+
+			for ( zint_render_line *zline = render->lines; zline != nullptr; zline = zline->next )
+			{
+				addBox( zline->x, zline->y, zline->width, zline->length );
+			}
+
+			for ( zint_render_ring *zring = render->rings; zring != nullptr; zring = zring->next )
+			{
+				addRing( zring->x, zring->y, zring->radius, zring->line_width );
+			}
+
+			for ( zint_render_hexagon *zhexagon = render->hexagons; zhexagon != nullptr; zhexagon = zhexagon->next )
+			{
+				addHexagon( zhexagon->x, zhexagon->y, 2.89 );
+			}
+
+			if( showText() )
+			{
+				for ( zint_render_string *zstring = render->strings; zstring != nullptr; zstring = zstring->next )
+				{
+					addText( zstring->x, zstring->y, zstring->fsize, QString((char*)(zstring->text)).toStdString() );
+				}
+			}
+
+			ZBarcode_Delete( symbol );
+		}
+
+
+		//////////////////////////////////////////////////////
+		// AusP Barcode
+		//////////////////////////////////////////////////////
+		glbarcode::Barcode* AusP::create()
+		{
+			return new AusP();
+		}
+
+		
+		std::string AusP::encode( const std::string& cookedData )
+		{
+			symbology = BARCODE_AUSPOST;
+			return ""; // Actual encoding is done in vectorize
+		}
+		
+
+	}
+}
+
+#endif // HAVE_GNU_BARCODE