/* GTK - The GIMP Toolkit

 * gtkpapersize.c: Paper Size

 * Copyright (C) 2006, Red Hat, Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

#include "config.h"

#include "gtkprintutils.h"

#include "gtkalias.h"

gdouble

_gtk_print_convert_to_mm (gdouble len, 

			  GtkUnit unit)

{

  switch (unit)

    {

    case GTK_UNIT_MM:

      return len;

    case GTK_UNIT_INCH:

      return len * MM_PER_INCH;

    default:

    case GTK_UNIT_PIXEL:

      g_warning ("Unsupported unit");

      /* Fall through */

    case GTK_UNIT_POINTS:

      return len * (MM_PER_INCH / POINTS_PER_INCH);

      break;

    }

}

gdouble

_gtk_print_convert_from_mm (gdouble len, 

			    GtkUnit unit)

{

  switch (unit)

    {

    case GTK_UNIT_MM:

      return len;

    case GTK_UNIT_INCH:

      return len / MM_PER_INCH;

    default:

    case GTK_UNIT_PIXEL:

      g_warning ("Unsupported unit");

      /* Fall through */

    case GTK_UNIT_POINTS:

      return len / (MM_PER_INCH / POINTS_PER_INCH);

      break;

    }

}