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egg-recent-util.c

#include <config.h>
#include <stdio.h>
#include <string.h>
#include <gtk/gtk.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>
#ifndef USE_STABLE_LIBGNOMEUI
#include <libgnomeui/gnome-icon-theme.h>
#include <libgnomeui/gnome-icon-lookup.h>
#endif
#include <math.h>
#include "egg-recent-util.h"

#define EGG_RECENT_UTIL_HOSTNAME_SIZE 512

/* ripped out of gedit2 */
gchar* 
egg_recent_util_escape_underlines (const gchar* text)
{
      GString *str;
      gint length;
      const gchar *p;
      const gchar *end;

      g_return_val_if_fail (text != NULL, NULL);

      length = strlen (text);

      str = g_string_new ("");

      p = text;
      end = text + length;

      while (p != end)
      {
            const gchar *next;
            next = g_utf8_next_char (p);

            switch (*p)
            {
                  case '_':
                        g_string_append (str, "__");
                        break;
                  default:
                        g_string_append_len (str, p, next - p);
                  break;
            }

            p = next;
      }

      return g_string_free (str, FALSE);
}

#ifndef USE_STABLE_LIBGNOMEUI
static GdkPixbuf *
scale_icon (GdkPixbuf *pixbuf,
          double *scale)
{
      guint width, height;

      width = gdk_pixbuf_get_width (pixbuf);
      height = gdk_pixbuf_get_height (pixbuf);

      width = floor (width * *scale + 0.5);
      height = floor (height * *scale + 0.5);
      
      return gdk_pixbuf_scale_simple (pixbuf, width, height, GDK_INTERP_BILINEAR);
}

static GdkPixbuf *
load_icon_file (char          *filename,
            guint          base_size,
            guint          nominal_size)
{
      GdkPixbuf *pixbuf, *scaled_pixbuf;
      guint width, height, size;
      double scale;

      pixbuf = gdk_pixbuf_new_from_file (filename, NULL);

      if (pixbuf == NULL) {
            return NULL;
      }
      
      if (base_size == 0) {
            width = gdk_pixbuf_get_width (pixbuf); 
            height = gdk_pixbuf_get_height (pixbuf);
            size = MAX (width, height);
            if (size > nominal_size) {
                  base_size = size;
            } else {
                  /* Don't scale up small icons */
                  base_size = nominal_size;
            }
      }
      
      if (base_size != nominal_size) {
            scale = (double)nominal_size/base_size;
            scaled_pixbuf = scale_icon (pixbuf, &scale);
            g_object_unref (pixbuf);
            pixbuf = scaled_pixbuf;
      }

      return pixbuf;
}

GdkPixbuf *
egg_recent_util_get_icon (GnomeIconTheme *theme, const gchar *uri,
                    const gchar *mime_type, int size)
{
      gchar *icon;
      gchar *filename;
      const GnomeIconData *icon_data;
      int base_size;
      GdkPixbuf *pixbuf;
      
      icon = gnome_icon_lookup (theme, NULL, uri, NULL, NULL,
                          mime_type, 0, NULL);
      

      g_return_val_if_fail (icon != NULL, NULL);

      filename = gnome_icon_theme_lookup_icon (theme, icon,
                                     size,
                                     &icon_data,
                                     &base_size);
      g_free (icon);

      if (filename == NULL) {
            return NULL;
      }

      pixbuf = load_icon_file (filename, base_size, size);
      g_free (filename);
      
      
      return pixbuf;
}
#endif /* !USE_STABLE_LIBGNOMEUI */

gchar *
egg_recent_util_get_unique_id (void)
{
      char hostname[EGG_RECENT_UTIL_HOSTNAME_SIZE];
      time_t the_time;
      guint32 rand;
      int pid;
      
      gethostname (hostname, EGG_RECENT_UTIL_HOSTNAME_SIZE);
      
      time (&the_time);
      rand = g_random_int ();
      pid = getpid ();

      return g_strdup_printf ("%s-%d-%d-%d", hostname, (int)time, (int)rand, (int)pid);
}

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