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gnome-utils.c

#include "gnome-utils.h"

#include <string.h>

static void section_header_style_set (GtkWidget *, GtkStyle *, gpointer);

gboolean
load_image_by_id (GtkImage * image, GtkIconSize size, const gchar * image_id)
{
      GdkPixbuf *pixbuf;
      gint width;
      gint height;

      GtkIconTheme *icon_theme;

      gchar *id;

      gboolean icon_exists;

      if (!image_id)
            return FALSE;

      id = g_strdup (image_id);

      gtk_icon_size_lookup (size, &width, &height);

      if (g_path_is_absolute (id))
      {
            pixbuf = gdk_pixbuf_new_from_file_at_size (id, width, height, NULL);

            icon_exists = (pixbuf != NULL);

            if (icon_exists)
            {
                  gtk_image_set_from_pixbuf (image, pixbuf);

                  g_object_unref (pixbuf);
            }
            else
                  gtk_image_set_from_stock (image, "gtk-missing-image", size);
      }
      else
      {
            if (        /* file extensions are not copesetic with loading by "name" */
                  g_str_has_suffix (id, ".png") ||
                  g_str_has_suffix (id, ".svg") ||
                  g_str_has_suffix (id, ".xpm")
               )

                  id[strlen (id) - 4] = '\0';

            if (gtk_widget_has_screen (GTK_WIDGET (image)))
                  icon_theme =
                        gtk_icon_theme_get_for_screen (gtk_widget_get_screen (GTK_WIDGET
                              (image)));
            else
                  icon_theme = gtk_icon_theme_get_default ();

            icon_exists = gtk_icon_theme_has_icon (icon_theme, id);

            if (icon_exists)
                  gtk_image_set_from_icon_name (image, id, size);
            else
                  gtk_image_set_from_stock (image, "gtk-missing-image", size);

      }

      g_free (id);

      return icon_exists;
}

GnomeDesktopItem *
load_desktop_item_by_unknown_id (const gchar * id)
{
      GnomeDesktopItem *item;
      GError *error = NULL;

      item = gnome_desktop_item_new_from_uri (id, 0, &error);

      if (!error)
            return item;
      else
      {
            g_error_free (error);
            error = NULL;
      }

      item = gnome_desktop_item_new_from_file (id, 0, &error);

      if (!error)
            return item;
      else
      {
            g_error_free (error);
            error = NULL;
      }

      item = gnome_desktop_item_new_from_basename (id, 0, &error);

      if (!error)
            return item;
      else
      {
            g_error_free (error);
            error = NULL;
      }

      return NULL;
}

gpointer
get_gconf_value (const gchar * key)
{
      GConfClient *client;
      GConfValue *value;
      GError *error = NULL;

      gpointer retval = NULL;

      GList *list;
      GSList *slist;

      GConfValue *value_i;
      GSList *node;

      client = gconf_client_get_default ();
      value = gconf_client_get (client, key, &error);

      if (error || ! value)
      {
            handle_g_error (&error, "%s: error getting %s", G_STRFUNC, key);

            goto exit;
      }

      switch (value->type)
      {
      case GCONF_VALUE_STRING:
            retval = (gpointer) g_strdup (gconf_value_get_string (value));
            break;

      case GCONF_VALUE_INT:
            retval = GINT_TO_POINTER (gconf_value_get_int (value));
            break;

      case GCONF_VALUE_BOOL:
            retval = GINT_TO_POINTER (gconf_value_get_bool (value));
            break;

      case GCONF_VALUE_LIST:
            list = NULL;
            slist = gconf_value_get_list (value);

            for (node = slist; node; node = node->next)
            {
                  value_i = (GConfValue *) node->data;

                  if (value_i->type == GCONF_VALUE_STRING)
                        list = g_list_append (list,
                              g_strdup (gconf_value_get_string (value_i)));
                  else if (value_i->type == GCONF_VALUE_INT)
                        list = g_list_append (list,
                              GINT_TO_POINTER (gconf_value_get_int (value_i)));
                  else
                        g_assert_not_reached ();
            }

            retval = (gpointer) list;

            break;

      default:
            g_assert_not_reached ();
            break;
      }

      exit:

      g_object_unref (client);
      if(value)
            gconf_value_free (value);

      return retval;
}

void
set_gconf_value (const gchar * key, gconstpointer data)
{
      GConfClient *client;
      GConfValue *value;

      GConfValueType type;
      GConfValueType list_type;

      GSList *slist = NULL;

      GError *error = NULL;

      GConfValue *value_i;
      GList *node;

      client = gconf_client_get_default ();
      value = gconf_client_get (client, key, &error);

      if (error)
      {
            handle_g_error (&error, "%s: error getting %s", G_STRFUNC, key);

            goto exit;
      }

      type = value->type;
      list_type =
            (type ==
            GCONF_VALUE_LIST ? gconf_value_get_list_type (value) : GCONF_VALUE_INVALID);

      gconf_value_free (value);
      value = gconf_value_new (type);

      if (type == GCONF_VALUE_LIST)
            gconf_value_set_list_type (value, list_type);

      switch (type)
      {
      case GCONF_VALUE_STRING:
            gconf_value_set_string (value, g_strdup ((gchar *) data));
            break;

      case GCONF_VALUE_INT:
            gconf_value_set_int (value, GPOINTER_TO_INT (data));
            break;

      case GCONF_VALUE_BOOL:
            gconf_value_set_bool (value, GPOINTER_TO_INT (data));
            break;

      case GCONF_VALUE_LIST:
            for (node = (GList *) data; node; node = node->next)
            {
                  value_i = gconf_value_new (list_type);

                  if (list_type == GCONF_VALUE_STRING)
                        gconf_value_set_string (value_i, (const gchar *) node->data);
                  else if (list_type == GCONF_VALUE_INT)
                        gconf_value_set_int (value_i, GPOINTER_TO_INT (node->data));
                  else
                        g_assert_not_reached ();

                  slist = g_slist_append (slist, value_i);
            }

            gconf_value_set_list_nocopy (value, slist);

            break;

      default:
            g_assert_not_reached ();
            break;
      }

      gconf_client_set (client, key, value, &error);

      if (error)
            handle_g_error (&error, "%s: error setting %s", G_STRFUNC, key);

      exit:

      gconf_value_free (value);
      g_object_unref (client);
}

guint
connect_gconf_notify (const gchar * key, GConfClientNotifyFunc cb, gpointer user_data)
{
      GConfClient *client;
      guint conn_id;

      GError *error = NULL;

      client = gconf_client_get_default ();
      conn_id = gconf_client_notify_add (client, key, cb, user_data, NULL, &error);

      if (error)
            handle_g_error (&error, "%s: error adding notify for (%s)", G_STRFUNC, key);

      g_object_unref (client);

      return conn_id;
}

void
handle_g_error (GError ** error, const gchar * msg_format, ...)
{
      gchar *msg;
      va_list args;

      va_start (args, msg_format);
      msg = g_strdup_vprintf (msg_format, args);
      va_end (args);

      if (*error)
      {
            g_log (G_LOG_DOMAIN, G_LOG_LEVEL_WARNING,
                  "\nGError raised: [%s]\nuser_message: [%s]\n", (*error)->message, msg);

            g_error_free (*error);

            *error = NULL;
      }
      else
            g_log (G_LOG_DOMAIN, G_LOG_LEVEL_WARNING, "\nerror raised: [%s]\n", msg);

      g_free (msg);
}

GtkWidget *
get_main_menu_section_header (const gchar * markup)
{
      GtkWidget *label;
      gchar *text;

      text = g_strdup_printf ("<span size=\"large\">%s</span>", markup);

      label = gtk_label_new (text);
      gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
      gtk_widget_set_name (label, "gnome-main-menu-section-header");

      g_signal_connect (G_OBJECT (label), "style-set", G_CALLBACK (section_header_style_set),
            NULL);

      g_free (text);

      return label;
}

static void
section_header_style_set (GtkWidget * widget, GtkStyle * prev_style, gpointer user_data)
{
      if (prev_style
            && widget->style->fg[GTK_STATE_SELECTED].green ==
            prev_style->fg[GTK_STATE_SELECTED].green)
            return;

      gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, &widget->style->bg[GTK_STATE_SELECTED]);
}

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