From 09795a01ef859f072920de9df974d1b03b9ab9a4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= <debian@jff-webhosting.net>
Date: Wed, 28 Dec 2016 20:24:50 +0100
Subject: New upstream version 4.2.4a

---
 app/wlib/gtklib/print.c | 858 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 858 insertions(+)
 create mode 100644 app/wlib/gtklib/print.c

(limited to 'app/wlib/gtklib/print.c')

diff --git a/app/wlib/gtklib/print.c b/app/wlib/gtklib/print.c
new file mode 100644
index 0000000..9f4a4a8
--- /dev/null
+++ b/app/wlib/gtklib/print.c
@@ -0,0 +1,858 @@
+/** \file print.c
+ * Printing functions using GTK's print API
+ */
+
+/*  XTrkCad - Model Railroad CAD
+ *  Copyright (C) 2015 Martin Fischer
+ *
+ *  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.
+ *
+ *  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 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 <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <pwd.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
+#include <math.h>
+#include <locale.h>
+
+#include <stdint.h>
+
+#include "gtkint.h"
+#include <gtk/gtkprintunixdialog.h>
+#include <gtk/gtkprintjob.h>
+
+#include "wlib.h"
+#include "i18n.h"
+
+extern wDrawColor wDrawColorWhite;
+extern wDrawColor wDrawColorBlack;
+
+/*****************************************************************************
+ *
+ * MACROS
+ *
+ */
+
+#define PRINT_PORTRAIT  (0)
+#define PRINT_LANDSCAPE (1)
+
+#define PPI (72.0)
+#define P2I( P ) ((P)/PPI)
+
+#define CENTERMARK_LENGTH (60)				/**< size of cross marking center of circles */
+#define DASH_LENGTH (8.0)					/**< length of single dash */
+
+#define PAGESETTINGS "xtrkcad.page"			/**< filename for page settings */
+#define PRINTSETTINGS "xtrkcad.printer"		/**< filename for printer settings */
+
+/*****************************************************************************
+ *
+ * VARIABLES
+ *
+ */
+
+static GtkPrintSettings *settings;			/**< current printer settings */
+static GtkPageSetup *page_setup;			/**< current paper settings */
+static GtkPrinter *selPrinter;				/**< printer selected by user */
+static GtkPrintJob *curPrintJob;			/**< currently active print job */
+extern struct wDraw_t psPrint_d;
+
+static wBool_t printContinue;	/**< control print job, FALSE for cancelling */
+
+static wIndex_t pageCount;		/**< unused, could be used for progress indicator */
+static wIndex_t totalPageCount; /**< unused, could be used for progress indicator */
+
+static double paperWidth;		/**< physical paper width */
+static double paperHeight;		/**< physical paper height */
+static double tBorder;			/**< top margin */
+static double rBorder;			/**< right margin */
+static double lBorder;			/**< left margin */
+static double bBorder;			/**< bottom margin */
+
+static long printFormat = PRINT_LANDSCAPE;
+
+/*****************************************************************************
+ *
+ * FUNCTIONS
+ *
+ */
+
+static void WlibGetPaperSize( void );
+
+/**
+ * Initialize printer und paper selection using the saved settings
+ *
+ * \param op IN print operation to initialize. If NULL only the global
+ * 				settings are loaded.
+ */
+
+void
+WlibApplySettings( GtkPrintOperation *op )
+{
+	gchar *filename;
+	GError *err = NULL;
+	GtkWidget *dialog;
+
+	filename = g_build_filename( wGetAppWorkDir(), PRINTSETTINGS, NULL );
+
+	if( !(settings = gtk_print_settings_new_from_file( filename, &err ))) {
+		if( err->code != G_FILE_ERROR_NOENT ) {
+			// ignore file not found error as defaults will be used
+			dialog = gtk_message_dialog_new (GTK_WINDOW (gtkMainW->gtkwin),
+											 GTK_DIALOG_DESTROY_WITH_PARENT,
+											 GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
+				                             err->message);
+			gtk_dialog_run (GTK_DIALOG (dialog));
+			gtk_widget_destroy (dialog);
+		} else {
+			// create  default print settings
+			settings = gtk_print_settings_new();
+		}	
+		g_error_free (err);
+	}
+	g_free( filename );
+
+	if (settings && op )
+			gtk_print_operation_set_print_settings (op, settings);
+
+	err = NULL;
+	filename = g_build_filename( wGetAppWorkDir(), PAGESETTINGS, NULL );
+	if( !(page_setup = gtk_page_setup_new_from_file( filename, &err ))) {
+		// ignore file not found error as defaults will be used
+		if( err->code != G_FILE_ERROR_NOENT ) {
+			dialog = gtk_message_dialog_new (GTK_WINDOW (gtkMainW->gtkwin),
+											 GTK_DIALOG_DESTROY_WITH_PARENT,
+											 GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
+				                             err->message);
+			gtk_dialog_run (GTK_DIALOG (dialog));
+			gtk_widget_destroy (dialog);
+		} else {
+			page_setup = gtk_page_setup_new();
+		}	
+		g_error_free (err);
+	} else {
+		// on success get the paper dimensions
+		WlibGetPaperSize();
+	}
+	g_free( filename );
+
+	if( page_setup && op )
+		gtk_print_operation_set_default_page_setup (op, page_setup);
+
+}
+
+/**
+ * Save the printer settings. If op is not NULL the settings are retrieved
+ * from the print operation. Otherwise the state of the globals is saved.
+ *
+ * \param op IN printer operation. If NULL the glabal variables are used
+ */
+
+void
+WlibSaveSettings( GtkPrintOperation *op )
+{
+	GError *err = NULL;
+	gchar *filename;
+	GtkWidget *dialog;
+
+	if( op ) {
+		if (settings != NULL)
+			g_object_unref (settings);
+		settings = g_object_ref (gtk_print_operation_get_print_settings (op));
+	}
+    filename = g_build_filename( wGetAppWorkDir(), PRINTSETTINGS, NULL );
+    if( !gtk_print_settings_to_file( settings, filename, &err )) {
+		dialog = gtk_message_dialog_new (GTK_WINDOW (gtkMainW->gtkwin),
+                                     GTK_DIALOG_DESTROY_WITH_PARENT,
+                                     GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
+				                             err->message);
+
+		g_error_free (err);
+		gtk_dialog_run (GTK_DIALOG (dialog));
+		gtk_widget_destroy (dialog);
+	}
+	g_free( filename );
+
+	if( op ) {
+		if (page_setup != NULL)
+			g_object_unref (page_setup);
+		page_setup = g_object_ref (gtk_print_operation_get_default_page_setup (op));
+	}
+    filename = g_build_filename( wGetAppWorkDir(), PAGESETTINGS, NULL );
+    if( !gtk_page_setup_to_file( page_setup, filename, &err )) {
+		dialog = gtk_message_dialog_new (GTK_WINDOW (gtkMainW->gtkwin),
+                                     GTK_DIALOG_DESTROY_WITH_PARENT,
+                                     GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
+				                             err->message);
+
+		g_error_free (err);
+		gtk_dialog_run (GTK_DIALOG (dialog));
+		gtk_widget_destroy (dialog);
+	}
+	g_free( filename );
+
+}
+
+/**
+ * Page setup function. Previous settings are loaded and the setup 
+ * dialog is shown. The settings are saved after the dialog ends.
+ *
+ * \param callback IN unused
+ */
+
+void wPrintSetup( wPrintSetupCallBack_p callback )
+{
+	GtkPageSetup *new_page_setup;
+	gchar *filename;
+	GError *err;
+	GtkWidget *dialog;
+
+	WlibApplySettings( NULL );
+
+	new_page_setup = gtk_print_run_page_setup_dialog (GTK_WINDOW (gtkMainW->gtkwin),
+														page_setup, settings);
+	if (page_setup)
+		g_object_unref (page_setup);
+
+	page_setup = new_page_setup;
+	
+	WlibGetPaperSize();
+	WlibSaveSettings( NULL );
+}
+
+/*****************************************************************************
+ *
+ * BASIC PRINTING
+ *
+ */
+
+
+/**
+ * set the current line type for printing operations
+ *
+ * \param lineWidth IN new line width
+ * \param lineType IN flag for line type (dashed or full)
+ * \param opts IN unused
+ * \return
+ */
+
+
+static void setLineType(
+		double lineWidth,
+		wDrawLineType_e lineType,
+		wDrawOpts opts )
+{
+	cairo_t *cr = psPrint_d.printContext;
+	double dashLength = DASH_LENGTH;
+	
+	if (lineWidth < 0.0) {
+		lineWidth = P2I(-lineWidth)*2.0;
+	}
+
+	// make sure that there is a minimum line width used
+	if ( lineWidth == 0.0 )
+		lineWidth = 0.1;
+	
+	cairo_set_line_width( cr, lineWidth );
+
+	if (lineType == wDrawLineDash)
+		cairo_set_dash( cr, &dashLength, 1, 0.0 );
+	else	
+		cairo_set_dash( cr, NULL, 0, 0.0 );
+}
+
+/**
+ * set the color for the following print operations
+ *
+ * \param color IN the new color
+ * \return
+ */
+
+static void psSetColor(
+		wDrawColor color )
+{
+	cairo_t *cr = psPrint_d.printContext;
+	GdkColor* const gcolor = gtkGetColor(color, TRUE);
+
+	cairo_set_source_rgb(cr, gcolor->red / 65535.0,
+							 gcolor->green / 65535.0,
+							 gcolor->blue / 65535.0);
+}
+
+/**
+ * Print a straight line
+ *
+ * \param x0, y0 IN  starting point in pixels
+ * \param x1, y1 IN  ending point in pixels
+ * \param width line width
+ * \param lineType
+ * \param color color
+ * \param opts ?
+ */
+
+void psPrintLine(
+		wPos_t x0, wPos_t y0,
+		wPos_t x1, wPos_t y1,
+		wDrawWidth width,
+		wDrawLineType_e lineType,
+		wDrawColor color,
+		wDrawOpts opts )
+{
+	if (color == wDrawColorWhite)
+		return;
+	if (opts&wDrawOptTemp)
+		return;
+
+	psSetColor(color);
+	setLineType( width, lineType, opts );
+
+	cairo_move_to( psPrint_d.printContext,
+					x0, y0 );
+	cairo_line_to( psPrint_d.printContext,
+					x1, y1 );
+	cairo_stroke( psPrint_d.printContext );
+}
+
+/**
+ * Print an arc around a specified center
+ *
+ * \param x0, y0 IN  center of arc
+ * \param r IN radius
+ * \param angle0, angle1 IN start and end angle
+ * \param drawCenter draw marking for center
+ * \param width line width
+ * \param lineType
+ * \param color color
+ * \param opts ?
+ */
+
+void psPrintArc(
+		wPos_t x0, wPos_t y0,
+		wPos_t r,
+		double angle0,
+		double angle1,
+		wBool_t drawCenter,
+		wDrawWidth width,
+		wDrawLineType_e lineType,
+		wDrawColor color,
+		wDrawOpts opts )
+{
+	cairo_t *cr = psPrint_d.printContext;
+
+	if (color == wDrawColorWhite)
+		return;
+	if (opts&wDrawOptTemp)
+		return;
+
+	psSetColor(color);
+	setLineType(width, lineType, opts);
+
+	if (angle1 >= 360.0)
+		angle1 = 359.999;
+	angle1 = 90.0-(angle0+angle1);
+	while (angle1 < 0.0) angle1 += 360.0;
+	while (angle1 >= 360.0) angle1 -= 360.0;
+	angle0 = 90.0-angle0;
+	while (angle0 < 0.0) angle0 += 360.0;
+	while (angle0 >= 360.0) angle0 -= 360.0;
+
+	// draw the curve
+	cairo_arc( cr, x0, y0, r, angle1 * M_PI / 180.0, angle0 * M_PI / 180.0 );
+
+	if( drawCenter ) {
+		// draw crosshair for center of curve
+		cairo_move_to( cr, x0 - CENTERMARK_LENGTH / 2, y0 );
+		cairo_line_to( cr, x0 + CENTERMARK_LENGTH / 2, y0 );
+		cairo_move_to( cr, x0, y0 - CENTERMARK_LENGTH / 2 );
+		cairo_line_to( cr, x0, y0 + CENTERMARK_LENGTH / 2 );
+	}
+	cairo_stroke( psPrint_d.printContext );
+}
+
+/**
+ * Print a filled rectangle
+ *
+ * \param x0, y0 IN top left corner
+ * \param x1, y1 IN bottom right corner
+ * \param color IN fill color
+ * \param opts IN options
+ * \return
+ */
+
+void psPrintFillRectangle(
+		wPos_t x0, wPos_t y0,
+		wPos_t x1, wPos_t y1,
+		wDrawColor color,
+		wDrawOpts opts )
+{
+	cairo_t *cr = psPrint_d.printContext;
+	double width = x0 - x1;
+	double height = y0 - y1;
+
+	if (color == wDrawColorWhite)
+		return;
+	if (opts&wDrawOptTemp)
+		return;
+	psSetColor(color);
+
+	cairo_rectangle( cr, x0, y0, width, height );
+
+	cairo_fill( cr );
+}
+
+/**
+ * Print a filled polygon
+ *
+ * \param p IN a list of x and y coordinates
+ * \param cnt IN the number of points
+ * \param color IN fill color
+ * \param opts IN options
+ * \return
+ */
+
+void psPrintFillPolygon(
+		wPos_t p[][2],
+		int cnt,
+		wDrawColor color,
+		wDrawOpts opts )
+{
+	int inx;
+	cairo_t *cr = psPrint_d.printContext;
+
+	if (color == wDrawColorWhite)
+		return;
+	if (opts&wDrawOptTemp)
+		return;
+
+	psSetColor(color);
+
+	cairo_move_to( cr, p[ 0 ][ 0 ], p[ 0 ][ 1 ] );
+	for (inx=0; inx<cnt; inx++)
+		cairo_line_to( cr, p[ inx ][ 0 ], p[ inx ][ 1 ] );
+	cairo_fill( cr );
+}
+
+/**
+ * Print a filled circle
+ *
+ * \param x0, y0  IN coordinates of center (in pixels )
+ * \param r IN radius
+ * \param color IN fill color
+ * \param opts IN options
+ * \return
+ */
+
+void psPrintFillCircle(
+		wPos_t x0, wPos_t y0,
+		wPos_t r,
+		wDrawColor color,
+		wDrawOpts opts )
+{
+	if (color == wDrawColorWhite)
+		return;
+	if (opts&wDrawOptTemp)
+		return;
+	psSetColor(color);
+
+	cairo_arc( psPrint_d.printContext,
+				x0, y0, r, 0.0, 2 * M_PI );
+
+	cairo_fill( psPrint_d.printContext );
+}
+
+
+/**
+ * Print a string at the given position using specified font and text size.
+ * The orientatoion of the y-axis in XTrackCAD is wrong for cairo. So for
+ * all other print primitives a flip operation is done. As this would
+ * also affect the string orientation, printing a string has to be
+ * treated differently. The starting point is transformed, then the
+ * string is rotated and scaled as needed. Finally the string position
+ * translated to the starting point calculated previously. The same
+ * solution would have to be applied to a bitmap should printing
+ * bitmaps ever be implemented.
+ *
+ * \param x IN x position in pixels
+ * \param y IN y position in pixels
+ * \param a IN angle of baseline in degrees. Positive is clockwise, 0 is direction of positive x axis
+ * \param s IN string to print
+ * \param fp IN font
+ * \param fs IN font size
+ * \param color IN text color
+ * \param opts IN ???
+ * \return
+ */
+
+void psPrintString(
+		wPos_t x, wPos_t y,
+		double a,
+		char * s,
+		wFont_p fp,
+		double fs,
+		wDrawColor color,
+		wDrawOpts opts )
+{
+	char * cp;
+	double x0 = (double)x, y0 = (double)y;
+	double text_height;
+
+	cairo_t *cr;
+	cairo_matrix_t matrix;
+
+	PangoLayout *layout;
+	PangoFontDescription *desc;
+	PangoFontMetrics *metrics;
+	PangoContext *pcontext;
+
+	if (color == wDrawColorWhite)
+		return;
+
+	cr = psPrint_d.printContext;
+
+	// get the current transformation matrix and transform the starting
+	// point of the string
+	cairo_get_matrix( cr, &matrix );
+	cairo_matrix_transform_point( &matrix, &x0, &y0 );
+
+	cairo_save( cr );
+
+	layout = pango_cairo_create_layout( cr );
+
+	// set the correct font and size
+	/** \todo use a getter function instead of double conversion */
+	desc = pango_font_description_from_string (gtkFontTranslate( fp ));
+
+	//don't know why the size has to be reduced to 75% :-(
+	pango_font_description_set_size(desc, fs * PANGO_SCALE *0.75 );
+
+	// render the string to a Pango layout
+	pango_layout_set_font_description (layout, desc);
+	pango_layout_set_text (layout, s, -1);
+	pango_layout_set_width (layout, -1);
+	pango_layout_set_alignment (layout, PANGO_ALIGN_LEFT);
+
+	// get the height of the string
+	pcontext = pango_cairo_create_context( cr );
+	metrics = pango_context_get_metrics(pcontext, desc, pango_context_get_language(pcontext));
+	text_height = pango_font_metrics_get_ascent(metrics) / PANGO_SCALE;
+	
+	// transform the string to the correct position
+	cairo_identity_matrix( cr );
+	
+	cairo_translate( cr, x0 + text_height * sin ( -a * M_PI / 180.0) , y0 - text_height * cos ( a * M_PI / 180.0) );
+	cairo_rotate( cr, -a * M_PI / 180.0  );
+	
+	// set the color
+	psSetColor( color );
+
+	// and show the string
+	pango_cairo_show_layout (cr, layout);
+
+	// free unused objects
+	g_object_unref( layout );
+	g_object_unref( pcontext );
+
+	cairo_restore( cr );
+}
+
+/**
+ * Create clipping retangle.
+ *
+ * \param x, y IN starting position
+ * \param w, h IN width and height of rectangle
+ * \return    
+ */
+
+void wPrintClip( wPos_t x, wPos_t y, wPos_t w, wPos_t h )
+{
+	cairo_move_to( psPrint_d.printContext, x, y );
+	cairo_rel_line_to( psPrint_d.printContext, w, 0 );
+	cairo_rel_line_to( psPrint_d.printContext, 0, h );
+	cairo_rel_line_to( psPrint_d.printContext, -w, 0 );
+	cairo_close_path( psPrint_d.printContext );
+	cairo_clip( psPrint_d.printContext );
+}
+
+/*****************************************************************************
+ *
+ * PAGE FUNCTIONS
+ *
+ */
+
+/**
+ * Get the paper dimensions and margins and setup the internal variables
+ * \return
+ */
+
+static void
+WlibGetPaperSize( void )
+{
+	double temp;
+	
+	bBorder = gtk_page_setup_get_bottom_margin( page_setup, GTK_UNIT_INCH );
+	tBorder = gtk_page_setup_get_top_margin( page_setup, GTK_UNIT_INCH );
+	lBorder = gtk_page_setup_get_left_margin( page_setup, GTK_UNIT_INCH );
+	rBorder = gtk_page_setup_get_right_margin( page_setup, GTK_UNIT_INCH );
+	paperHeight = gtk_page_setup_get_paper_height( page_setup, GTK_UNIT_INCH );
+	paperWidth = gtk_page_setup_get_paper_width( page_setup, GTK_UNIT_INCH );
+	
+	// XTrackCAD does page orientation itself. Basic assumption is that the
+	// paper is always oriented in portrait mode. Ignore settings by user
+	if( paperHeight < paperWidth ) {
+		temp = paperHeight;
+		paperHeight = paperWidth;
+		paperWidth = temp;
+	}	
+}
+
+/**
+ * Get the paper size. The size returned is the printable area of the
+ * currently selected paper, ie. the physical size minus the margins.
+ * \param w OUT printable width of the paper in inches
+ * \param h OUT printable height of the paper in inches
+ * \return
+ */
+
+void wPrintGetPageSize(
+		double * w,
+		double * h )
+{
+	// if necessary load the settings
+	if( !settings )
+		WlibApplySettings( NULL );
+
+	WlibGetPaperSize();
+
+	*w = paperWidth -lBorder - rBorder;
+	*h = paperHeight - tBorder - bBorder;
+}
+
+/**
+ * Get the paper size. The size returned is the physical size of the
+ * currently selected paper.
+ * \param w OUT physical width of the paper in inches
+ * \param h OUT physical height of the paper in inches
+ * \return
+ */
+
+void wPrintGetPhysSize(
+		double * w,
+		double * h )
+{
+	// if necessary load the settings
+	if( !settings )
+		WlibApplySettings( NULL );
+
+	WlibGetPaperSize();
+
+	*w = paperWidth;
+	*h = paperHeight;
+}
+
+/**
+ * Cancel the current print job. This function is preserved here for 
+ * reference in case the function should be implemented again. 
+ * \param context IN unused
+ * \return
+ */
+static void printAbort( void * context )
+{
+	printContinue = FALSE;
+//	wWinShow( printAbortW, FALSE );
+}
+
+/**
+ * Initialize new page.
+ * The cairo_save() / cairo_restore() cycle was added to solve problems
+ * with a multi page print operation. This might actually be a bug in 
+ * cairo but I didn't examine that any further.
+ *
+ * \return   print context for the print operation
+ */
+wDraw_p wPrintPageStart( void )
+{
+	pageCount++;
+
+	cairo_save( psPrint_d.printContext );
+	
+	return &psPrint_d;
+}
+
+/**
+ * End of page. This function returns the contents of printContinue. The
+ * caller continues printing as long as TRUE is returned. Setting 
+ * printContinue to FALSE in an asynchronous handler therefore cleanly 
+ * terminates a print job at the end of the page.
+ *
+ * \param p IN ignored
+ * \return    always printContinue
+ */
+
+
+wBool_t wPrintPageEnd( wDraw_p p )
+{
+	cairo_show_page( psPrint_d.printContext );
+	
+	cairo_restore( psPrint_d.printContext );
+	
+	return printContinue;
+}
+
+/*****************************************************************************
+ *
+ * PRINT START/END
+ *
+ */
+
+
+/**
+ * Start a new document
+ *
+ * \param title IN title of document ( name of layout )
+ * \param fTotalPageCount IN number of pages to print (unused)
+ * \param copiesP OUT ???
+ * \return TRUE if successful, FALSE if cancelled by user
+ */
+
+wBool_t wPrintDocStart( const char * title, int fTotalPageCount, int * copiesP )
+{
+	GtkWidget *printDialog;
+	gint res;
+	cairo_surface_type_t surface_type;
+	cairo_matrix_t matrix;
+
+	printDialog = gtk_print_unix_dialog_new( title, GTK_WINDOW(gtkMainW->gtkwin));
+
+	// load the settings
+	WlibApplySettings( NULL );
+
+	// and apply them to the printer dialog
+	gtk_print_unix_dialog_set_settings( (GtkPrintUnixDialog *)printDialog, settings );
+	gtk_print_unix_dialog_set_page_setup( (GtkPrintUnixDialog *)printDialog, page_setup );
+
+	res = gtk_dialog_run( (GtkDialog *)printDialog );
+	if( res == GTK_RESPONSE_OK ) {
+		selPrinter = gtk_print_unix_dialog_get_selected_printer( (GtkPrintUnixDialog *)printDialog );
+
+		if( settings )
+			g_object_unref (settings);
+		settings = gtk_print_unix_dialog_get_settings( (GtkPrintUnixDialog *)printDialog );
+
+		if( page_setup )
+			g_object_unref( page_setup );
+		page_setup = gtk_print_unix_dialog_get_page_setup( (GtkPrintUnixDialog *)printDialog );
+
+		curPrintJob = gtk_print_job_new( title,
+							 selPrinter,
+							 settings,
+							 page_setup );
+
+		psPrint_d.curPrintSurface = gtk_print_job_get_surface( curPrintJob,
+								   NULL );
+		psPrint_d.printContext = cairo_create( psPrint_d.curPrintSurface );
+
+		//update the paper dimensions
+		WlibGetPaperSize();
+
+		/* for the file based surfaces the resolution is 72 dpi (see documentation) */
+		surface_type = cairo_surface_get_type( psPrint_d.curPrintSurface );
+		if( surface_type == CAIRO_SURFACE_TYPE_PDF ||
+			surface_type == CAIRO_SURFACE_TYPE_PS  ||
+			surface_type == CAIRO_SURFACE_TYPE_SVG )
+			psPrint_d.dpi = 72;
+		else
+			psPrint_d.dpi = (double)gtk_print_settings_get_resolution( settings );
+		
+		// in XTrackCAD 0,0 is top left, in cairo bottom left. This is 
+		// corrected via the following transformations. 
+		// also the translate makes sure that the drawing is rendered
+		// within the paper margins
+		
+		cairo_scale( psPrint_d.printContext, 1.0, -1.0 );
+		cairo_translate( psPrint_d.printContext, lBorder * psPrint_d.dpi, -(paperHeight-bBorder) *psPrint_d.dpi );
+
+		WlibSaveSettings( NULL );
+	}
+	gtk_widget_destroy (printDialog);
+
+	if (copiesP)
+		*copiesP = 1;
+
+	printContinue = TRUE;
+	
+	if( res != GTK_RESPONSE_OK )
+		return FALSE;
+	else
+		return TRUE;
+}
+
+/**
+ * Callback for job finished event. Destroys the cairo context.
+ *
+ * \param job IN unused
+ * \param data IN unused
+ * \param err IN if != NULL, an error dialog ist displayed
+ * \return
+ */
+
+void
+doPrintJobFinished( GtkPrintJob *job, void *data, GError *err )
+{
+	GtkWidget *dialog;
+
+	cairo_destroy( psPrint_d.printContext );
+	if( err ) {
+		dialog = gtk_message_dialog_new (GTK_WINDOW (gtkMainW->gtkwin),
+                                     GTK_DIALOG_DESTROY_WITH_PARENT,
+                                     GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
+                                     err->message);
+	}
+}
+
+/**
+ * Finish the print operation
+ * \return
+ */
+
+void wPrintDocEnd( void )
+{
+	cairo_surface_finish( psPrint_d.curPrintSurface );
+
+	gtk_print_job_send( curPrintJob,
+						doPrintJobFinished,
+						NULL,
+						NULL );
+
+//	wWinShow( printAbortW, FALSE );
+}
+
+
+wBool_t wPrintQuit( void )
+{
+	return FALSE;
+}
+
+
+wBool_t wPrintInit( void )
+{
+	return TRUE;
+}
-- 
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