/*
   Copyright (C) 2001, 2002, 2003, 2006 Philip Blundell <philb@gnu.org>
   Hildon adaption 2005 by Matthias Steinbauer <matthias@steinbauer.org>
   Toolbar new API conversion 2005 by Florian Boor <florian@kernelconcepts.de>
   Copyright (C) 2006, 2008 Neal H. Walfield <neal@walfield.org>
  
   This file is part of GPE.

   GPE 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 3 of the License, or
   (at your option) any later version.

   GPE 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, see
   <http://www.gnu.org/licenses/>.  */

#include <time.h>
#include <stdlib.h>
#include <glib.h>
#include <gtk/gtk.h>
#include "util.h"

GdkGC *
pen_new (GtkWidget * widget, guint red, guint green, guint blue)
{
  GdkColormap *colormap;
  GdkGC *pen_color_gc;
  GdkColor pen_color;

  colormap = gdk_window_get_colormap (widget->window);
  pen_color_gc = gdk_gc_new (widget->window);
  gdk_gc_copy (pen_color_gc, widget->style->black_gc);
  pen_color.red = red;
  pen_color.green = green;
  pen_color.blue = blue;
  gdk_colormap_alloc_color (colormap, &pen_color, FALSE, TRUE);
  gdk_gc_set_foreground (pen_color_gc, &pen_color);

  return pen_color_gc;
}

/* Call strftime() on the format and convert the result to UTF-8.  Any
   non-% expressions in the format must be in the locale's character
   set, since they will undergo UTF-8 conversion.  Careful with
   translations!  */
gchar *
strftime_strdup_utf8_locale (const char *fmt, struct tm *tm)
{
  char buf[1024];
  size_t n;

  buf[0] = '\001';
  n = strftime (buf, sizeof (buf), fmt, tm);
  if (n == 0 && buf[0] == '\001')
    return NULL;		/* Something went wrong */

  return g_locale_to_utf8 (buf, -1, NULL, NULL, NULL);
}

/* As above but format string is UTF-8.  */
gchar *
strftime_strdup_utf8_utf8 (const char *fmt, struct tm *tm)
{
  gchar *sfmt, *sval;

  sfmt = g_locale_from_utf8 (fmt, -1, NULL, NULL, NULL);
  if (sfmt == NULL)
    return NULL;		/* Conversion failed */
  sval = strftime_strdup_utf8_locale (sfmt, tm);
  g_free (sfmt);

  return sval;
}

#ifndef HAVE_g_date_set_time_t
void         
g_date_set_time_t (GDate *date, time_t t)
{
  struct tm tm;
  localtime_r (&t, &tm);

  g_date_set_dmy (date, tm.tm_mday, tm.tm_mon + 1, tm.tm_year + 1900);
}
#endif

unsigned int
difflocaltime (time_t end, time_t start)
{
  struct tm s;
  localtime_r (&start, &s);

  struct tm e;
  localtime_r (&end, &e);

  return end - start + (e.tm_gmtoff - s.tm_gmtoff);
}