/* $Id$ */
/*-
 * Copyright (c) 2005 Benedikt Meurer <benny@xfce.org>
 *
 * 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
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <thunar/thunar-zoom-level.h>



static void thunar_zoom_level_transform_from_integer (const GValue *src_value,
                                                      GValue       *dst_value);
static void thunar_zoom_level_transform_from_string  (const GValue *src_value,
                                                      GValue       *dst_value);
static void thunar_zoom_level_transform_to_icon_size (const GValue *src_value,
                                                      GValue       *dst_value);



GType
thunar_zoom_level_get_type (void)
{
  static GType type = G_TYPE_INVALID;

  if (G_UNLIKELY (type == G_TYPE_INVALID))
    {
      static const GEnumValue values[] =
      {
        { THUNAR_ZOOM_LEVEL_SMALLEST, "THUNAR_ZOOM_LEVEL_SMALLEST", "smallest" },
        { THUNAR_ZOOM_LEVEL_SMALLER,  "THUNAR_ZOOM_LEVEL_SMALLER",  "smaller" },
        { THUNAR_ZOOM_LEVEL_SMALL,    "THUNAR_ZOOM_LEVEL_SMALL",    "small" },
        { THUNAR_ZOOM_LEVEL_NORMAL,   "THUNAR_ZOOM_LEVEL_NORMAL",   "normal" },
        { THUNAR_ZOOM_LEVEL_LARGE,    "THUNAR_ZOOM_LEVEL_LARGE",    "large" },
        { THUNAR_ZOOM_LEVEL_LARGER,   "THUNAR_ZOOM_LEVEL_LARGER",   "larger" },
        { THUNAR_ZOOM_LEVEL_LARGEST,  "THUNAR_ZOOM_LEVEL_LARGEST",  "largest" },
        { 0, NULL, NULL }
      };

      type = g_enum_register_static ("ThunarZoomLevel", values);

      /* register transformation function for integer->ThunarZoomLevel */
      g_value_register_transform_func (G_TYPE_INT, type, thunar_zoom_level_transform_from_integer);

      /* register transformation function for string->ThunarZoomLevel */
      g_value_register_transform_func (G_TYPE_STRING, type, thunar_zoom_level_transform_from_string);
    }

  return type;
}



GType
thunar_icon_size_get_type (void)
{
  static GType type = G_TYPE_INVALID;

  if (G_UNLIKELY (type == G_TYPE_INVALID))
    {
      static const GEnumValue values[] =
      {
        { THUNAR_ICON_SIZE_SMALLEST, "THUNAR_ICON_SIZE_SMALLEST", "smallest" },
        { THUNAR_ICON_SIZE_SMALLER,  "THUNAR_ICON_SIZE_SMALLER",  "smaller" },
        { THUNAR_ICON_SIZE_SMALL,    "THUNAR_ICON_SIZE_SMALL",    "small" },
        { THUNAR_ICON_SIZE_NORMAL,   "THUNAR_ICON_SIZE_NORMAL",   "normal" },
        { THUNAR_ICON_SIZE_LARGE,    "THUNAR_ICON_SIZE_LARGE",    "large" },
        { THUNAR_ICON_SIZE_LARGER,   "THUNAR_ICON_SIZE_LARGER",   "larger" },
        { THUNAR_ICON_SIZE_LARGEST,  "THUNAR_ICON_SIZE_LARGEST",  "largest" },
        { 0, NULL, NULL }
      };

      type = g_enum_register_static ("ThunarIconSize", values);

      /* register transformation function for ThunarZoomLevel->ThunarIconSize */
      g_value_register_transform_func (THUNAR_TYPE_ZOOM_LEVEL, type, thunar_zoom_level_transform_to_icon_size);
    }

  return type;
}



static void
thunar_zoom_level_transform_from_integer (const GValue *src_value,
                                          GValue       *dst_value)
{
  ThunarZoomLevel zoom_level = THUNAR_ZOOM_LEVEL_NORMAL;
  GEnumClass     *klass;
  gint            n;

  /* determine the zoom_level matching the src_value... */
  klass = g_type_class_ref (THUNAR_TYPE_ZOOM_LEVEL);
  for (n = 0; n < klass->n_values; ++n)
    {
      zoom_level = klass->values[n].value;
      if (zoom_level == g_value_get_int (src_value))
        break;
    }
  g_type_class_unref (klass);

  /* ...and return that value */
  g_value_set_enum (dst_value, zoom_level);
}



static void
thunar_zoom_level_transform_from_string (const GValue *src_value,
                                         GValue       *dst_value)
{
  ThunarZoomLevel zoom_level = THUNAR_ZOOM_LEVEL_NORMAL;
  GEnumClass     *klass;
  gint            n;

  /* determine the zoom_level matching the src_value... */
  klass = g_type_class_ref (THUNAR_TYPE_ZOOM_LEVEL);
  for (n = 0; n < klass->n_values; ++n)
    {
      zoom_level = klass->values[n].value;
      if (g_str_equal (klass->values[n].value_name, g_value_get_string (src_value)))
        break;
    }
  g_type_class_unref (klass);

  /* ...and return that value */
  g_value_set_enum (dst_value, zoom_level);
}



static void
thunar_zoom_level_transform_to_icon_size (const GValue *src_value,
                                          GValue       *dst_value)
{
  g_value_set_enum (dst_value, thunar_zoom_level_to_icon_size (g_value_get_enum (src_value)));
}



/**
 * thunar_zoom_level_to_icon_size:
 * @zoom_level : a #ThunarZoomLevel.
 *
 * Returns the #ThunarIconSize matching the specified
 * @zoom_level.
 *
 * Return value: the #ThunarIconSize for @zoom_level.
 **/
ThunarIconSize
thunar_zoom_level_to_icon_size (ThunarZoomLevel zoom_level)
{
  switch (zoom_level)
    {
    case THUNAR_ZOOM_LEVEL_SMALLEST:  return THUNAR_ICON_SIZE_SMALLEST;
    case THUNAR_ZOOM_LEVEL_SMALLER:   return THUNAR_ICON_SIZE_SMALLER;
    case THUNAR_ZOOM_LEVEL_SMALL:     return THUNAR_ICON_SIZE_SMALL;
    case THUNAR_ZOOM_LEVEL_NORMAL:    return THUNAR_ICON_SIZE_NORMAL;
    case THUNAR_ZOOM_LEVEL_LARGE:     return THUNAR_ICON_SIZE_LARGE;
    case THUNAR_ZOOM_LEVEL_LARGER:    return THUNAR_ICON_SIZE_LARGER;
    default:                          return THUNAR_ICON_SIZE_LARGEST;
    }
}