/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* This file is part of the GtkHTML library.

   Copyright (C) 2000 Helix Code, Inc.
   
   This library 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 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
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#ifndef _HTMLPRINTER_H
#define _HTMLPRINTER_H

#include <libgnomeprint/gnome-print.h>
#include <libgnomeprint/gnome-print-job.h>
#include <libgnomeprint/gnome-print-config.h>
#include "htmlpainter.h"

#define HTML_TYPE_PRINTER                 (html_printer_get_type ())
#define HTML_PRINTER(obj)                 (G_TYPE_CHECK_INSTANCE_CAST((obj), HTML_TYPE_PRINTER, HTMLPrinter))
#define HTML_PRINTER_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), HTML_TYPE_PRINTER, HTMLPrinterClass))
#define HTML_IS_PRINTER(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), HTML_TYPE_PRINTER))
#define HTML_IS_PRINTER_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), HTML_TYPE_PRINTER))

/* The following macros are used to convert between the HTMLEngine coordinate
   system (which uses integers) to the GnomePrint one (which uses doubles). */

#define SCALE_ENGINE_TO_GNOME_PRINT(x) ((printer->scale * (x)) / 1024.0)
#define SCALE_GNOME_PRINT_TO_ENGINE(x) ((gint) (((x) * 1024.0 / printer->scale) + 0.5))
#define SCALE_PANGO_TO_GNOME_PRINT(x) (((x)) / 1024.0)

struct _HTMLPrinter {
	HTMLPainter base;

	GnomePrintContext *context;
	GnomePrintJob     *master;
	GnomePrintConfig  *config;
	gdouble scale;
};

struct _HTMLPrinterClass {
	HTMLPainterClass base;
};

GtkType      html_printer_get_type                    (void);
HTMLPainter *html_printer_new                         (GtkWidget         *widget,
						       GnomePrintContext *print_context,
						       GnomePrintJob     *print_master);
guint        html_printer_get_page_width              (HTMLPrinter       *printer);
guint        html_printer_get_page_height             (HTMLPrinter       *printer);
gdouble      html_printer_scale_to_gnome_print        (HTMLPrinter       *printer,
						       gint               x);
void         html_printer_coordinates_to_gnome_print  (HTMLPrinter       *printer,
						       gint               engine_x,
						       gint               engine_y,
						       gdouble           *print_x_return,
						       gdouble           *print_y_return);
void         html_printer_set_scale                   (HTMLPrinter       *printer,
						       gdouble            scale);

#endif /* _HTMLPRINTER_H */
