[gnome-initial-setup] Sync the timezone map widget with the control-center



commit 141f75200d309611e00bf20870b107037f07be34
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Feb 11 19:44:37 2016 -0500

    Sync the timezone map widget with the control-center
    
    The main motivation for this change is that we want to
    show an indication of the selected timezone, and the
    control-center version of the map has a built-in bubble
    for this purpose.
    
    At the same time, allow selecting the timezone with
    the mouse.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=761854

 gnome-initial-setup/pages/timezone/Makefile.am     |    1 +
 .../pages/timezone/cc-timezone-map.c               |  542 +++++++++++++++++---
 .../pages/timezone/cc-timezone-map.h               |   11 +-
 gnome-initial-setup/pages/timezone/data/cc.png     |  Bin 0 -> 52271 bytes
 .../pages/timezone/data/timezone_8.5.png           |  Bin 0 -> 2069 bytes
 .../pages/timezone/data/timezone_8.5_dim.png       |  Bin 0 -> 1177 bytes
 .../pages/timezone/datetime.gresource.xml          |    4 +
 .../pages/timezone/gis-timezone-page.c             |  150 ++++++-
 gnome-initial-setup/pages/timezone/tz.c            |  483 +++++++++++++++++
 gnome-initial-setup/pages/timezone/tz.h            |   88 ++++
 10 files changed, 1198 insertions(+), 81 deletions(-)
---
diff --git a/gnome-initial-setup/pages/timezone/Makefile.am b/gnome-initial-setup/pages/timezone/Makefile.am
index ff6f410..c05de2e 100644
--- a/gnome-initial-setup/pages/timezone/Makefile.am
+++ b/gnome-initial-setup/pages/timezone/Makefile.am
@@ -40,6 +40,7 @@ BUILT_SOURCES += timezone-resources.c timezone-resources.h
 
 libgistimezone_la_SOURCES =    \
        cc-timezone-map.c cc-timezone-map.h \
+       tz.c tz.h \
        gis-bubble-widget.c gis-bubble-widget.h \
        gis-timezone-page.c gis-timezone-page.h \
        $(BUILT_SOURCES)
diff --git a/gnome-initial-setup/pages/timezone/cc-timezone-map.c 
b/gnome-initial-setup/pages/timezone/cc-timezone-map.c
index f94a31e..85567b2 100644
--- a/gnome-initial-setup/pages/timezone/cc-timezone-map.c
+++ b/gnome-initial-setup/pages/timezone/cc-timezone-map.c
@@ -24,6 +24,7 @@
 #include "cc-timezone-map.h"
 #include <math.h>
 #include <string.h>
+#include "tz.h"
 
 G_DEFINE_TYPE (CcTimezoneMap, cc_timezone_map, GTK_TYPE_WIDGET)
 
@@ -35,16 +36,89 @@ G_DEFINE_TYPE (CcTimezoneMap, cc_timezone_map, GTK_TYPE_WIDGET)
 
 #define DATETIME_RESOURCE_PATH "/org/gnome/control-center/datetime"
 
+typedef struct
+{
+  gdouble offset;
+  guchar red;
+  guchar green;
+  guchar blue;
+  guchar alpha;
+} CcTimezoneMapOffset;
+
 struct _CcTimezoneMapPrivate
 {
   GdkPixbuf *orig_background;
   GdkPixbuf *orig_background_dim;
+  GdkPixbuf *orig_color_map;
 
   GdkPixbuf *background;
+  GdkPixbuf *color_map;
+  GdkPixbuf *pin;
+
+  guchar *visible_map_pixels;
+  gint visible_map_rowstride;
+
+  gdouble selected_offset;
+
+  TzDB *tzdb;
+  TzLocation *location;
+
+  gchar *bubble_text;
+};
+
+enum
+{
+  LOCATION_CHANGED,
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
 
-  GWeatherLocation *location;
+
+static CcTimezoneMapOffset color_codes[] =
+{
+    {-11.0, 43, 0, 0, 255 },
+    {-10.0, 85, 0, 0, 255 },
+    {-9.5, 102, 255, 0, 255 },
+    {-9.0, 128, 0, 0, 255 },
+    {-8.0, 170, 0, 0, 255 },
+    {-7.0, 212, 0, 0, 255 },
+    {-6.0, 255, 0, 1, 255 }, // north
+    {-6.0, 255, 0, 0, 255 }, // south
+    {-5.0, 255, 42, 42, 255 },
+    {-4.5, 192, 255, 0, 255 },
+    {-4.0, 255, 85, 85, 255 },
+    {-3.5, 0, 255, 0, 255 },
+    {-3.0, 255, 128, 128, 255 },
+    {-2.0, 255, 170, 170, 255 },
+    {-1.0, 255, 213, 213, 255 },
+    {0.0, 43, 17, 0, 255 },
+    {1.0, 85, 34, 0, 255 },
+    {2.0, 128, 51, 0, 255 },
+    {3.0, 170, 68, 0, 255 },
+    {3.5, 0, 255, 102, 255 },
+    {4.0, 212, 85, 0, 255 },
+    {4.5, 0, 204, 255, 255 },
+    {5.0, 255, 102, 0, 255 },
+    {5.5, 0, 102, 255, 255 },
+    {5.75, 0, 238, 207, 247 },
+    {6.0, 255, 127, 42, 255 },
+    {6.5, 204, 0, 254, 254 },
+    {7.0, 255, 153, 85, 255 },
+    {8.0, 255, 179, 128, 255 },
+    {9.0, 255, 204, 170, 255 },
+    {9.5, 170, 0, 68, 250 },
+    {10.0, 255, 230, 213, 255 },
+    {10.5, 212, 124, 21, 250 },
+    {11.0, 212, 170, 0, 255 },
+    {11.5, 249, 25, 87, 253 },
+    {12.0, 255, 204, 0, 255 },
+    {12.75, 254, 74, 100, 248 },
+    {13.0, 255, 85, 153, 250 },
+    {-100, 0, 0, 0, 0 }
 };
 
+
 static void
 cc_timezone_map_dispose (GObject *object)
 {
@@ -52,11 +126,37 @@ cc_timezone_map_dispose (GObject *object)
 
   g_clear_object (&priv->orig_background);
   g_clear_object (&priv->orig_background_dim);
+  g_clear_object (&priv->orig_color_map);
   g_clear_object (&priv->background);
+  g_clear_object (&priv->pin);
+  g_clear_pointer (&priv->bubble_text, g_free);
+
+  if (priv->color_map)
+    {
+      g_clear_object (&priv->color_map);
+
+      priv->visible_map_pixels = NULL;
+      priv->visible_map_rowstride = 0;
+    }
 
   G_OBJECT_CLASS (cc_timezone_map_parent_class)->dispose (object);
 }
 
+static void
+cc_timezone_map_finalize (GObject *object)
+{
+  CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (object)->priv;
+
+  if (priv->tzdb)
+    {
+      tz_db_free (priv->tzdb);
+      priv->tzdb = NULL;
+    }
+
+
+  G_OBJECT_CLASS (cc_timezone_map_parent_class)->finalize (object);
+}
+
 /* GtkWidget functions */
 static void
 cc_timezone_map_get_preferred_width (GtkWidget *widget,
@@ -110,10 +210,49 @@ cc_timezone_map_size_allocate (GtkWidget     *widget,
                                               allocation->height,
                                               GDK_INTERP_BILINEAR);
 
+  if (priv->color_map)
+    g_object_unref (priv->color_map);
+
+  priv->color_map = gdk_pixbuf_scale_simple (priv->orig_color_map,
+                                             allocation->width,
+                                             allocation->height,
+                                             GDK_INTERP_BILINEAR);
+
+  priv->visible_map_pixels = gdk_pixbuf_get_pixels (priv->color_map);
+  priv->visible_map_rowstride = gdk_pixbuf_get_rowstride (priv->color_map);
+
   GTK_WIDGET_CLASS (cc_timezone_map_parent_class)->size_allocate (widget,
                                                                   allocation);
 }
 
+static void
+cc_timezone_map_realize (GtkWidget *widget)
+{
+  GdkWindowAttr attr = { 0, };
+  GtkAllocation allocation;
+  GdkWindow *window;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  gtk_widget_set_realized (widget, TRUE);
+
+  attr.window_type = GDK_WINDOW_CHILD;
+  attr.wclass = GDK_INPUT_OUTPUT;
+  attr.width = allocation.width;
+  attr.height = allocation.height;
+  attr.x = allocation.x;
+  attr.y = allocation.y;
+  attr.event_mask = gtk_widget_get_events (widget)
+                                 | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK;
+
+  window = gdk_window_new (gtk_widget_get_parent_window (widget), &attr,
+                           GDK_WA_X | GDK_WA_Y);
+
+  gdk_window_set_user_data (window, widget);
+  gtk_widget_set_window (widget, window);
+}
+
+
 static gdouble
 convert_longitude_to_x (gdouble longitude, gint map_width)
 {
@@ -151,104 +290,184 @@ convert_latitude_to_y (gdouble latitude, gdouble map_height)
 }
 
 static void
-draw_hilight (CcTimezoneMap *map,
-              cairo_t       *cr)
+draw_text_bubble (cairo_t *cr,
+                  GtkWidget *widget,
+                  gdouble pointx,
+                  gdouble pointy)
 {
-  GtkWidget *widget = GTK_WIDGET (map);
-  CcTimezoneMapPrivate *priv = map->priv;
-  const char *fmt;
-  GWeatherTimezone *zone;
-  double selected_offset;
-  GdkPixbuf *hilight, *orig_hilight;
-  GtkAllocation alloc;
-  char *file;
-  GError *err = NULL;
+  static const double corner_radius = 9.0;
+  static const double margin_top = 12.0;
+  static const double margin_bottom = 12.0;
+  static const double margin_left = 24.0;
+  static const double margin_right = 24.0;
 
-  if (!priv->location)
+  CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (widget)->priv;
+  GtkAllocation alloc;
+  PangoLayout *layout;
+  PangoRectangle text_rect;
+  double x;
+  double y;
+  double width;
+  double height;
+
+  if (!priv->bubble_text)
     return;
 
   gtk_widget_get_allocation (widget, &alloc);
+  layout = gtk_widget_create_pango_layout (widget, NULL);
 
-  /* paint hilight */
-  if (gtk_widget_is_sensitive (widget))
-    fmt = DATETIME_RESOURCE_PATH "/timezone_%g.png";
+  /* Layout the text */
+  pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
+  pango_layout_set_spacing (layout, 3);
+  pango_layout_set_markup (layout, priv->bubble_text, -1);
+
+  pango_layout_get_pixel_extents (layout, NULL, &text_rect);
+
+  /* Calculate the bubble size based on the text layout size */
+  width = text_rect.width + margin_left + margin_right;
+  height = text_rect.height + margin_top + margin_bottom;
+
+  if (pointx < alloc.width / 2)
+    x = pointx + 25;
   else
-    fmt = DATETIME_RESOURCE_PATH "/timezone_%g_dim.png";
+    x = pointx - width - 25;
 
-  zone = gweather_location_get_timezone (priv->location);
+  y = pointy - height / 2;
 
-  /* XXX: Do we need to do anything for DST? I don't think so... */
-  selected_offset = gweather_timezone_get_offset (zone) / 60.0;
+  /* Make sure it fits in the visible area */
+  x = CLAMP (x, 0, alloc.width - width);
+  y = CLAMP (y, 0, alloc.height - height);
 
-  file = g_strdup_printf (fmt, selected_offset);
-  orig_hilight = gdk_pixbuf_new_from_resource (file, &err);
-  g_free (file);
-  file = NULL;
+  cairo_save (cr);
+  cairo_translate (cr, x, y);
 
-  hilight = gdk_pixbuf_scale_simple (orig_hilight, alloc.width, alloc.height, GDK_INTERP_BILINEAR);
-  gdk_cairo_set_source_pixbuf (cr, hilight, 0, 0);
+  /* Draw the bubble */
+  cairo_new_sub_path (cr);
+  cairo_arc (cr, width - corner_radius, corner_radius, corner_radius, radians (-90), radians (0));
+  cairo_arc (cr, width - corner_radius, height - corner_radius, corner_radius, radians (0), radians (90));
+  cairo_arc (cr, corner_radius, height - corner_radius, corner_radius, radians (90), radians (180));
+  cairo_arc (cr, corner_radius, corner_radius, corner_radius, radians (180), radians (270));
+  cairo_close_path (cr);
 
-  cairo_paint (cr);
-  g_object_unref (hilight);
-  g_object_unref (orig_hilight);
+  cairo_set_source_rgba (cr, 0.2, 0.2, 0.2, 0.7);
+  cairo_fill (cr);
+
+  /* And finally draw the text */
+  cairo_set_source_rgb (cr, 1, 1, 1);
+  cairo_move_to (cr, margin_left, margin_top);
+  pango_cairo_show_layout (cr, layout);
 
-  g_clear_error (&err);
+  g_object_unref (layout);
+  cairo_restore (cr);
 }
 
-static void
-draw_pin (CcTimezoneMap *map,
-          cairo_t       *cr)
+static gboolean
+cc_timezone_map_draw (GtkWidget *widget,
+                      cairo_t   *cr)
 {
-  GtkWidget *widget = GTK_WIDGET (map);
-  CcTimezoneMapPrivate *priv = map->priv;
-  GdkPixbuf *pin;
+  CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (widget)->priv;
+  GdkPixbuf *hilight, *orig_hilight;
   GtkAllocation alloc;
+  gchar *file;
   GError *err = NULL;
-  double longitude, latitude;
-  double pointx, pointy;
+  gdouble pointx, pointy;
+  char buf[16];
+  const char *fmt;
 
   gtk_widget_get_allocation (widget, &alloc);
 
-  if (!priv->location)
-    return;
+  /* paint background */
+  gdk_cairo_set_source_pixbuf (cr, priv->background, 0, 0);
+  cairo_paint (cr);
 
-  if (!gweather_location_has_coords (priv->location))
-    return;
+  /* paint hilight */
+  if (gtk_widget_is_sensitive (widget))
+    fmt = DATETIME_RESOURCE_PATH "/timezone_%s.png";
+  else
+    fmt = DATETIME_RESOURCE_PATH "/timezone_%s_dim.png";
 
-  /* load pin icon */
-  pin = gdk_pixbuf_new_from_resource (DATETIME_RESOURCE_PATH "/pin.png", &err);
+  file = g_strdup_printf (fmt,
+                          g_ascii_formatd (buf, sizeof (buf),
+                                           "%g", priv->selected_offset));
+  orig_hilight = gdk_pixbuf_new_from_resource (file, &err);
+  g_free (file);
+  file = NULL;
 
-  gweather_location_get_coords (priv->location, &latitude, &longitude);
+  if (!orig_hilight)
+    {
+      g_warning ("Could not load hilight: %s",
+                 (err) ? err->message : "Unknown Error");
+      if (err)
+        g_clear_error (&err);
+    }
+  else
+    {
 
-  pointx = convert_longitude_to_x (longitude, alloc.width);
-  pointy = convert_latitude_to_y (latitude, alloc.height);
+      hilight = gdk_pixbuf_scale_simple (orig_hilight, alloc.width,
+                                         alloc.height, GDK_INTERP_BILINEAR);
+      gdk_cairo_set_source_pixbuf (cr, hilight, 0, 0);
 
-  pointx = CLAMP (floor (pointx), 0, alloc.width);
-  pointy = CLAMP (floor (pointy), 0, alloc.height);
+      cairo_paint (cr);
+      g_object_unref (hilight);
+      g_object_unref (orig_hilight);
+    }
 
-  gdk_cairo_set_source_pixbuf (cr, pin, pointx - PIN_HOT_POINT_X, pointy - PIN_HOT_POINT_Y);
-  cairo_paint (cr);
+  if (priv->location)
+    {
+      pointx = convert_longitude_to_x (priv->location->longitude, alloc.width);
+      pointy = convert_latitude_to_y (priv->location->latitude, alloc.height);
 
-  g_object_unref (pin);
+      pointx = CLAMP (floor (pointx), 0, alloc.width);
+      pointy = CLAMP (floor (pointy), 0, alloc.height);
+
+      draw_text_bubble (cr, widget, pointx, pointy);
+
+      if (priv->pin)
+        {
+          gdk_cairo_set_source_pixbuf (cr, priv->pin,
+                                       pointx - PIN_HOT_POINT_X,
+                                       pointy - PIN_HOT_POINT_Y);
+          cairo_paint (cr);
+        }
+    }
+
+  return TRUE;
 }
 
-static gboolean
-cc_timezone_map_draw (GtkWidget *widget,
-                      cairo_t   *cr)
+static void
+update_cursor (GtkWidget *widget)
 {
-  CcTimezoneMap *map = CC_TIMEZONE_MAP (widget);
-  CcTimezoneMapPrivate *priv = map->priv;
+  GdkWindow *window;
+  GdkCursor *cursor = NULL;
 
-  /* paint background */
-  gdk_cairo_set_source_pixbuf (cr, priv->background, 0, 0);
-  cairo_paint (cr);
+  if (!gtk_widget_get_realized (widget))
+    return;
 
-  draw_hilight (map, cr);
-  draw_pin (map, cr);
+  if (gtk_widget_is_sensitive (widget))
+    {
+      GdkDisplay *display;
+      display = gtk_widget_get_display (widget);
+      cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
+    }
 
-  return TRUE;
+  window = gtk_widget_get_window (widget);
+  gdk_window_set_cursor (window, cursor);
+
+  if (cursor)
+    g_object_unref (cursor);
+}
+
+static void
+cc_timezone_map_state_flags_changed (GtkWidget     *widget,
+                                     GtkStateFlags  prev_state)
+{
+  update_cursor (widget);
+
+  if (GTK_WIDGET_CLASS (cc_timezone_map_parent_class)->state_flags_changed)
+    GTK_WIDGET_CLASS (cc_timezone_map_parent_class)->state_flags_changed (widget, prev_state);
 }
 
+
 static void
 cc_timezone_map_class_init (CcTimezoneMapClass *klass)
 {
@@ -258,11 +477,130 @@ cc_timezone_map_class_init (CcTimezoneMapClass *klass)
   g_type_class_add_private (klass, sizeof (CcTimezoneMapPrivate));
 
   object_class->dispose = cc_timezone_map_dispose;
+  object_class->finalize = cc_timezone_map_finalize;
 
   widget_class->get_preferred_width = cc_timezone_map_get_preferred_width;
   widget_class->get_preferred_height = cc_timezone_map_get_preferred_height;
   widget_class->size_allocate = cc_timezone_map_size_allocate;
+  widget_class->realize = cc_timezone_map_realize;
   widget_class->draw = cc_timezone_map_draw;
+  widget_class->state_flags_changed = cc_timezone_map_state_flags_changed;
+
+  signals[LOCATION_CHANGED] = g_signal_new ("location-changed",
+                                            CC_TYPE_TIMEZONE_MAP,
+                                            G_SIGNAL_RUN_FIRST,
+                                            0,
+                                            NULL,
+                                            NULL,
+                                            g_cclosure_marshal_VOID__POINTER,
+                                            G_TYPE_NONE, 1,
+                                            G_TYPE_POINTER);
+}
+
+
+static gint
+sort_locations (TzLocation *a,
+                TzLocation *b)
+{
+  if (a->dist > b->dist)
+    return 1;
+
+  if (a->dist < b->dist)
+    return -1;
+
+  return 0;
+}
+
+static void
+set_location (CcTimezoneMap *map,
+              TzLocation    *location)
+{
+  CcTimezoneMapPrivate *priv = map->priv;
+  TzInfo *info;
+
+  priv->location = location;
+
+  info = tz_info_from_location (priv->location);
+
+  priv->selected_offset = tz_location_get_utc_offset (priv->location)
+    / (60.0*60.0) + ((info->daylight) ? -1.0 : 0.0);
+
+  g_signal_emit (map, signals[LOCATION_CHANGED], 0, priv->location);
+
+  tz_info_free (info);
+}
+
+static gboolean
+button_press_event (GtkWidget      *widget,
+                    GdkEventButton *event)
+{
+  CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (widget)->priv;
+  gint x, y;
+  guchar r, g, b, a;
+  guchar *pixels;
+  gint rowstride;
+  gint i;
+
+  const GPtrArray *array;
+  gint width, height;
+  GList *distances = NULL;
+  GtkAllocation alloc;
+
+  x = event->x;
+  y = event->y;
+
+
+  rowstride = priv->visible_map_rowstride;
+  pixels = priv->visible_map_pixels;
+
+  r = pixels[(rowstride * y + x * 4)];
+  g = pixels[(rowstride * y + x * 4) + 1];
+  b = pixels[(rowstride * y + x * 4) + 2];
+  a = pixels[(rowstride * y + x * 4) + 3];
+
+
+  for (i = 0; color_codes[i].offset != -100; i++)
+    {
+       if (color_codes[i].red == r && color_codes[i].green == g
+           && color_codes[i].blue == b && color_codes[i].alpha == a)
+         {
+           priv->selected_offset = color_codes[i].offset;
+         }
+    }
+
+  gtk_widget_queue_draw (widget);
+
+  /* work out the co-ordinates */
+
+  array = tz_get_locations (priv->tzdb);
+
+  gtk_widget_get_allocation (widget, &alloc);
+  width = alloc.width;
+  height = alloc.height;
+
+  for (i = 0; i < array->len; i++)
+    {
+      gdouble pointx, pointy, dx, dy;
+      TzLocation *loc = array->pdata[i];
+
+      pointx = convert_longitude_to_x (loc->longitude, width);
+      pointy = convert_latitude_to_y (loc->latitude, height);
+
+      dx = pointx - x;
+      dy = pointy - y;
+
+      loc->dist = dx * dx + dy * dy;
+      distances = g_list_prepend (distances, loc);
+
+    }
+  distances = g_list_sort (distances, (GCompareFunc) sort_locations);
+
+
+  set_location (CC_TIMEZONE_MAP (widget), (TzLocation*) distances->data);
+
+  g_list_free (distances);
+
+  return TRUE;
 }
 
 static void
@@ -293,7 +631,28 @@ cc_timezone_map_init (CcTimezoneMap *self)
       g_clear_error (&err);
     }
 
-  gtk_widget_set_has_window (GTK_WIDGET (self), FALSE);
+  priv->orig_color_map = gdk_pixbuf_new_from_resource (DATETIME_RESOURCE_PATH "/cc.png",
+                                                       &err);
+  if (!priv->orig_color_map)
+    {
+      g_warning ("Could not load background image: %s",
+                 (err) ? err->message : "Unknown error");
+      g_clear_error (&err);
+    }
+
+  priv->pin = gdk_pixbuf_new_from_resource (DATETIME_RESOURCE_PATH "/pin.png",
+                                            &err);
+  if (!priv->pin)
+    {
+      g_warning ("Could not load pin icon: %s",
+                 (err) ? err->message : "Unknown error");
+      g_clear_error (&err);
+    }
+
+  priv->tzdb = tz_load_db ();
+
+  g_signal_connect (self, "button-press-event", G_CALLBACK (button_press_event),
+                    NULL);
 }
 
 CcTimezoneMap *
@@ -302,19 +661,54 @@ cc_timezone_map_new (void)
   return g_object_new (CC_TYPE_TIMEZONE_MAP, NULL);
 }
 
-void
-cc_timezone_map_set_location (CcTimezoneMap    *map,
-                              GWeatherLocation *location)
+gboolean
+cc_timezone_map_set_timezone (CcTimezoneMap *map,
+                              const gchar   *timezone)
 {
-  CcTimezoneMapPrivate *priv = map->priv;
+  GPtrArray *locations;
+  guint i;
+  char *real_tz;
+  gboolean ret;
 
-  if (priv->location)
-    gweather_location_unref (priv->location);
+  real_tz = tz_info_get_clean_name (map->priv->tzdb, timezone);
 
-  if (location)
-    priv->location = gweather_location_ref (location);
-  else
-    priv->location = NULL;
+  locations = tz_get_locations (map->priv->tzdb);
+  ret = FALSE;
+
+  for (i = 0; i < locations->len; i++)
+    {
+      TzLocation *loc = locations->pdata[i];
+
+      if (!g_strcmp0 (loc->zone, real_tz ? real_tz : timezone))
+        {
+          set_location (map, loc);
+          ret = TRUE;
+          break;
+        }
+    }
+
+  if (ret)
+    gtk_widget_queue_draw (GTK_WIDGET (map));
+
+  g_free (real_tz);
+
+  return ret;
+}
+
+void
+cc_timezone_map_set_bubble_text (CcTimezoneMap *map,
+                                 const gchar   *text)
+{
+  CcTimezoneMapPrivate *priv = TIMEZONE_MAP_PRIVATE (map);
+
+  g_free (priv->bubble_text);
+  priv->bubble_text = g_strdup (text);
 
   gtk_widget_queue_draw (GTK_WIDGET (map));
 }
+
+TzLocation *
+cc_timezone_map_get_location (CcTimezoneMap *map)
+{
+  return map->priv->location;
+}
diff --git a/gnome-initial-setup/pages/timezone/cc-timezone-map.h 
b/gnome-initial-setup/pages/timezone/cc-timezone-map.h
index 17453b2..facf133 100644
--- a/gnome-initial-setup/pages/timezone/cc-timezone-map.h
+++ b/gnome-initial-setup/pages/timezone/cc-timezone-map.h
@@ -23,9 +23,7 @@
 #define _CC_TIMEZONE_MAP_H
 
 #include <gtk/gtk.h>
-
-#define GWEATHER_I_KNOW_THIS_IS_UNSTABLE
-#include <libgweather/gweather.h>
+#include "tz.h"
 
 G_BEGIN_DECLS
 
@@ -71,8 +69,11 @@ GType cc_timezone_map_get_type (void) G_GNUC_CONST;
 
 CcTimezoneMap *cc_timezone_map_new (void);
 
-void cc_timezone_map_set_location (CcTimezoneMap    *map,
-                                   GWeatherLocation *location);
+gboolean cc_timezone_map_set_timezone (CcTimezoneMap *map,
+                                       const gchar   *timezone);
+void cc_timezone_map_set_bubble_text (CcTimezoneMap *map,
+                                      const gchar   *text);
+TzLocation * cc_timezone_map_get_location (CcTimezoneMap *map);
 
 G_END_DECLS
 
diff --git a/gnome-initial-setup/pages/timezone/data/cc.png b/gnome-initial-setup/pages/timezone/data/cc.png
new file mode 100644
index 0000000..9984d23
Binary files /dev/null and b/gnome-initial-setup/pages/timezone/data/cc.png differ
diff --git a/gnome-initial-setup/pages/timezone/data/timezone_8.5.png 
b/gnome-initial-setup/pages/timezone/data/timezone_8.5.png
new file mode 100644
index 0000000..e7df3d7
Binary files /dev/null and b/gnome-initial-setup/pages/timezone/data/timezone_8.5.png differ
diff --git a/gnome-initial-setup/pages/timezone/data/timezone_8.5_dim.png 
b/gnome-initial-setup/pages/timezone/data/timezone_8.5_dim.png
new file mode 100644
index 0000000..7f1fbf4
Binary files /dev/null and b/gnome-initial-setup/pages/timezone/data/timezone_8.5_dim.png differ
diff --git a/gnome-initial-setup/pages/timezone/datetime.gresource.xml 
b/gnome-initial-setup/pages/timezone/datetime.gresource.xml
index fa316ed..7081349 100644
--- a/gnome-initial-setup/pages/timezone/datetime.gresource.xml
+++ b/gnome-initial-setup/pages/timezone/datetime.gresource.xml
@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <gresources>
   <gresource prefix="/org/gnome/control-center/datetime">
+    <file>backward</file>
     <file alias="bg.png">data/bg.png</file>
     <file alias="bg_dim.png">data/bg_dim.png</file>
+    <file alias="cc.png">data/cc.png</file>
     <file alias="pin.png">data/pin.png</file>
     <file alias="timezone_0.png">data/timezone_0.png</file>
     <file alias="timezone_0_dim.png">data/timezone_0_dim.png</file>
@@ -74,6 +76,8 @@
     <file alias="timezone_-8_dim.png">data/timezone_-8_dim.png</file>
     <file alias="timezone_8.png">data/timezone_8.png</file>
     <file alias="timezone_8_dim.png">data/timezone_8_dim.png</file>
+    <file alias="timezone_8.5.png">data/timezone_8.5.png</file>
+    <file alias="timezone_8.5_dim.png">data/timezone_8.5_dim.png</file>
     <file alias="timezone_8.75.png">data/timezone_8.75.png</file>
     <file alias="timezone_8.75_dim.png">data/timezone_8.75_dim.png</file>
     <file alias="timezone_-9.png">data/timezone_-9.png</file>
diff --git a/gnome-initial-setup/pages/timezone/gis-timezone-page.c 
b/gnome-initial-setup/pages/timezone/gis-timezone-page.c
index 1e4a603..7c32dc2 100644
--- a/gnome-initial-setup/pages/timezone/gis-timezone-page.c
+++ b/gnome-initial-setup/pages/timezone/gis-timezone-page.c
@@ -31,9 +31,12 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <langinfo.h>
 
 #define GNOME_DESKTOP_USE_UNSTABLE_API
 #include <libgnome-desktop/gnome-languages.h>
+#include <libgnome-desktop/gnome-wall-clock.h>
+#include <gdesktop-enums.h>
 
 #define GWEATHER_I_KNOW_THIS_IS_UNSTABLE
 #include <libgweather/gweather.h>
@@ -52,6 +55,9 @@
 /* Defines from geoclue private header src/public-api/gclue-enums.h */
 #define GCLUE_ACCURACY_LEVEL_CITY 4
 
+#define CLOCK_SCHEMA "org.gnome.desktop.interface"
+#define CLOCK_FORMAT_KEY "clock-format"
+
 struct _GisTimezonePagePrivate
 {
   GtkWidget *map;
@@ -67,6 +73,10 @@ struct _GisTimezonePagePrivate
   GWeatherLocation *auto_location;
   GWeatherLocation *current_location;
   Timedate1 *dtm;
+
+  GnomeWallClock *clock;
+  GDesktopClockFormat clock_format;
+  gboolean ampm_available;
 };
 typedef struct _GisTimezonePagePrivate GisTimezonePagePrivate;
 
@@ -115,8 +125,6 @@ set_location (GisTimezonePage  *page,
 
   g_clear_pointer (&priv->current_location, gweather_location_unref);
 
-  cc_timezone_map_set_location (CC_TIMEZONE_MAP (priv->map), location);
-
   gtk_widget_set_visible (priv->search_overlay, (location == NULL));
   gis_page_set_complete (GIS_PAGE (page), (location != NULL));
 
@@ -130,6 +138,8 @@ set_location (GisTimezonePage  *page,
       zone = gweather_location_get_timezone (location);
       tzid = gweather_timezone_get_tzid (zone);
 
+      cc_timezone_map_set_timezone (CC_TIMEZONE_MAP (priv->map), tzid);
+
       queue_set_timezone (page, tzid);
     }
 }
@@ -376,6 +386,124 @@ entry_location_changed (GObject *object, GParamSpec *param, GisTimezonePage *pag
   set_location (page, location);
 }
 
+#define GETTEXT_PACKAGE_TIMEZONES "gnome-control-center-2.0-timezones"
+
+static char *
+translated_city_name (TzLocation *loc)
+{
+  char *country;
+  char *name;
+  char *zone_translated;
+  char **split_translated;
+  gint length;
+
+  /* Load the translation for it */
+  zone_translated = g_strdup (dgettext (GETTEXT_PACKAGE_TIMEZONES, loc->zone));
+  g_strdelimit (zone_translated, "_", ' ');
+  split_translated = g_regex_split_simple ("[\\x{2044}\\x{2215}\\x{29f8}\\x{ff0f}/]",
+                                           zone_translated,
+                                           0, 0);
+  g_free (zone_translated);
+
+  length = g_strv_length (split_translated);
+
+  country = gnome_get_country_from_code (loc->country, NULL);
+  /* Translators: "city, country" */
+  name = g_strdup_printf (C_("timezone loc", "%s, %s"),
+                          split_translated[length-1],
+                          country);
+  g_free (country);
+  g_strfreev (split_translated);
+
+  return name;
+}
+
+static void
+update_timezone (GisTimezonePage *page, TzLocation *location)
+{
+  GisTimezonePagePrivate *priv = gis_timezone_page_get_instance_private (page);
+  char *tz_desc;
+  char *bubble_text;
+  char *city_country;
+  char *utc_label;
+  char *time_label;
+  GTimeZone *zone;
+  GDateTime *date;
+  gboolean use_ampm;
+
+  if (priv->clock_format == G_DESKTOP_CLOCK_FORMAT_12H && priv->ampm_available)
+    use_ampm = TRUE;
+  else
+    use_ampm = FALSE;
+
+  zone = g_time_zone_new (location->zone);
+  date = g_date_time_new_now (zone);
+  g_time_zone_unref (zone);
+
+  /* Update the text bubble in the timezone map */
+  city_country = translated_city_name (location);
+
+ /* Translators: UTC here means the Coordinated Universal Time.
+  * %:::z will be replaced by the offset from UTC e.g. UTC+02
+  */
+  utc_label = g_date_time_format (date, _("UTC%:::z"));
+
+  if (use_ampm)
+    /* Translators: This is the time format used in 12-hour mode. */
+    time_label = g_date_time_format (date, _("%l:%M %p"));
+  else
+    /* Translators: This is the time format used in 24-hour mode. */
+    time_label = g_date_time_format (date, _("%R"));
+
+  /* Translators: "timezone (utc shift)" */
+  tz_desc = g_strdup_printf (C_("timezone map", "%s (%s)"),
+                             g_date_time_get_timezone_abbreviation (date),
+                             utc_label);
+  bubble_text = g_strdup_printf ("<b>%s</b>\n"
+                                 "<small>%s</small>\n"
+                                 "<b>%s</b>",
+                                 tz_desc,
+                                 city_country,
+                                 time_label);
+  cc_timezone_map_set_bubble_text (CC_TIMEZONE_MAP (priv->map), bubble_text);
+
+  g_free (tz_desc);
+  g_free (city_country);
+  g_free (utc_label);
+  g_free (time_label);
+  g_free (bubble_text);
+
+  g_date_time_unref (date);
+}
+
+static void
+map_location_changed (CcTimezoneMap   *map,
+                      TzLocation      *location,
+                      GisTimezonePage *page)
+{
+  update_timezone (page, location);
+  queue_set_timezone (page, location->zone);
+}
+
+static void
+on_clock_changed (GnomeWallClock  *clock,
+                  GParamSpec      *pspec,
+                  GisTimezonePage *page)
+{
+  GisTimezonePagePrivate *priv = gis_timezone_page_get_instance_private (page);
+  TzLocation *location;
+
+  if (!gtk_widget_get_mapped (priv->map))
+    return;
+
+  if (gtk_widget_is_visible (priv->search_overlay))
+    return;
+
+  location = cc_timezone_map_get_location (CC_TIMEZONE_MAP (priv->map));
+  if (location)
+    update_timezone (page, location);
+}
+
 static void
 entry_mapped (GtkWidget *widget,
               gpointer   user_data)
@@ -429,6 +557,8 @@ gis_timezone_page_constructed (GObject *object)
   GisTimezonePage *page = GIS_TIMEZONE_PAGE (object);
   GisTimezonePagePrivate *priv = gis_timezone_page_get_instance_private (page);
   GError *error;
+  const char *ampm;
+  GSettings *settings;
 
   G_OBJECT_CLASS (gis_timezone_page_parent_class)->constructed (object);
 
@@ -444,6 +574,19 @@ gis_timezone_page_constructed (GObject *object)
     exit (1);
   }
 
+  priv->clock = g_object_new (GNOME_TYPE_WALL_CLOCK, NULL);
+  g_signal_connect (priv->clock, "notify::clock", G_CALLBACK (on_clock_changed), page);
+
+  ampm = nl_langinfo (AM_STR);
+  if (ampm == NULL || ampm[0] == '\0')
+    priv->ampm_available = FALSE;
+  else
+    priv->ampm_available = TRUE;
+
+  settings = g_settings_new (CLOCK_SCHEMA);
+  priv->clock_format = g_settings_get_enum (settings, CLOCK_FORMAT_KEY);
+  g_object_unref (settings);
+
   priv->geoclue_cancellable = g_cancellable_new ();
 
   set_auto_location (page, NULL);
@@ -458,6 +601,8 @@ gis_timezone_page_constructed (GObject *object)
                     G_CALLBACK (visible_child_changed), page);
   g_signal_connect (priv->search_button, "toggled",
                     G_CALLBACK (search_button_toggled), page);
+  g_signal_connect (priv->map, "location-changed",
+                    G_CALLBACK (map_location_changed), page);
 
   gtk_widget_show (GTK_WIDGET (page));
 }
@@ -471,6 +616,7 @@ gis_timezone_page_dispose (GObject *object)
   stop_geolocation (page);
 
   g_clear_object (&priv->dtm);
+  g_clear_object (&priv->clock);
 
   G_OBJECT_CLASS (gis_timezone_page_parent_class)->dispose (object);
 }
diff --git a/gnome-initial-setup/pages/timezone/tz.c b/gnome-initial-setup/pages/timezone/tz.c
new file mode 100644
index 0000000..0eac576
--- /dev/null
+++ b/gnome-initial-setup/pages/timezone/tz.c
@@ -0,0 +1,483 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* Generic timezone utilities.
+ *
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Authors: Hans Petter Jansson <hpj ximian com>
+ * 
+ * Largely based on Michael Fulbright's work on Anaconda.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <glib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include <math.h>
+#include <string.h>
+#include "tz.h"
+#include "cc-datetime-resources.h"
+
+
+/* Forward declarations for private functions */
+
+static float convert_pos (gchar *pos, int digits);
+static int compare_country_names (const void *a, const void *b);
+static void sort_locations_by_country (GPtrArray *locations);
+static gchar * tz_data_file_get (void);
+static void load_backward_tz (TzDB *tz_db);
+
+/* ---------------- *
+ * Public interface *
+ * ---------------- */
+TzDB *
+tz_load_db (void)
+{
+       gchar *tz_data_file;
+       TzDB *tz_db;
+       FILE *tzfile;
+       char buf[4096];
+
+       tz_data_file = tz_data_file_get ();
+       if (!tz_data_file) {
+               g_warning ("Could not get the TimeZone data file name");
+               return NULL;
+       }
+       tzfile = fopen (tz_data_file, "r");
+       if (!tzfile) {
+               g_warning ("Could not open *%s*\n", tz_data_file);
+               g_free (tz_data_file);
+               return NULL;
+       }
+
+       tz_db = g_new0 (TzDB, 1);
+       tz_db->locations = g_ptr_array_new ();
+
+       while (fgets (buf, sizeof(buf), tzfile))
+       {
+               gchar **tmpstrarr;
+               gchar *latstr, *lngstr, *p;
+               TzLocation *loc;
+
+               if (*buf == '#') continue;
+
+               g_strchomp(buf);
+               tmpstrarr = g_strsplit(buf,"\t", 6);
+               
+               latstr = g_strdup (tmpstrarr[1]);
+               p = latstr + 1;
+               while (*p != '-' && *p != '+') p++;
+               lngstr = g_strdup (p);
+               *p = '\0';
+               
+               loc = g_new0 (TzLocation, 1);
+               loc->country = g_strdup (tmpstrarr[0]);
+               loc->zone = g_strdup (tmpstrarr[2]);
+               loc->latitude  = convert_pos (latstr, 2);
+               loc->longitude = convert_pos (lngstr, 3);
+               
+#ifdef __sun
+               if (tmpstrarr[3] && *tmpstrarr[3] == '-' && tmpstrarr[4])
+                       loc->comment = g_strdup (tmpstrarr[4]);
+
+               if (tmpstrarr[3] && *tmpstrarr[3] != '-' && !islower(loc->zone)) {
+                       TzLocation *locgrp;
+
+                       /* duplicate entry */
+                       locgrp = g_new0 (TzLocation, 1);
+                       locgrp->country = g_strdup (tmpstrarr[0]);
+                       locgrp->zone = g_strdup (tmpstrarr[3]);
+                       locgrp->latitude  = convert_pos (latstr, 2);
+                       locgrp->longitude = convert_pos (lngstr, 3);
+                       locgrp->comment = (tmpstrarr[4]) ? g_strdup (tmpstrarr[4]) : NULL;
+
+                       g_ptr_array_add (tz_db->locations, (gpointer) locgrp);
+               }
+#else
+               loc->comment = (tmpstrarr[3]) ? g_strdup(tmpstrarr[3]) : NULL;
+#endif
+
+               g_ptr_array_add (tz_db->locations, (gpointer) loc);
+
+               g_free (latstr);
+               g_free (lngstr);
+               g_strfreev (tmpstrarr);
+       }
+       
+       fclose (tzfile);
+       
+       /* now sort by country */
+       sort_locations_by_country (tz_db->locations);
+       
+       g_free (tz_data_file);
+
+       /* Load up the hashtable of backward links */
+       load_backward_tz (tz_db);
+
+       return tz_db;
+}
+
+static void
+tz_location_free (TzLocation *loc)
+{
+       g_free (loc->country);
+       g_free (loc->zone);
+       g_free (loc->comment);
+
+       g_free (loc);
+}
+
+void
+tz_db_free (TzDB *db)
+{
+       g_ptr_array_foreach (db->locations, (GFunc) tz_location_free, NULL);
+       g_ptr_array_free (db->locations, TRUE);
+       g_hash_table_destroy (db->backward);
+       g_free (db);
+}
+
+GPtrArray *
+tz_get_locations (TzDB *db)
+{
+       return db->locations;
+}
+
+
+gchar *
+tz_location_get_country (TzLocation *loc)
+{
+       return loc->country;
+}
+
+
+gchar *
+tz_location_get_zone (TzLocation *loc)
+{
+       return loc->zone;
+}
+
+
+gchar *
+tz_location_get_comment (TzLocation *loc)
+{
+       return loc->comment;
+}
+
+
+void
+tz_location_get_position (TzLocation *loc, double *longitude, double *latitude)
+{
+       *longitude = loc->longitude;
+       *latitude = loc->latitude;
+}
+
+glong
+tz_location_get_utc_offset (TzLocation *loc)
+{
+       TzInfo *tz_info;
+       glong offset;
+
+       tz_info = tz_info_from_location (loc);
+       offset = tz_info->utc_offset;
+       tz_info_free (tz_info);
+       return offset;
+}
+
+TzInfo *
+tz_info_from_location (TzLocation *loc)
+{
+       TzInfo *tzinfo;
+       time_t curtime;
+       struct tm *curzone;
+       gchar *tz_env_value;
+       
+       g_return_val_if_fail (loc != NULL, NULL);
+       g_return_val_if_fail (loc->zone != NULL, NULL);
+       
+       tz_env_value = g_strdup (getenv ("TZ"));
+       setenv ("TZ", loc->zone, 1);
+       
+#if 0
+       tzset ();
+#endif
+       tzinfo = g_new0 (TzInfo, 1);
+
+       curtime = time (NULL);
+       curzone = localtime (&curtime);
+
+#ifndef __sun
+       /* Currently this solution doesnt seem to work - I get that */
+       /* America/Phoenix uses daylight savings, which is wrong    */
+       tzinfo->tzname_normal = g_strdup (curzone->tm_zone);
+       if (curzone->tm_isdst) 
+               tzinfo->tzname_daylight =
+                       g_strdup (&curzone->tm_zone[curzone->tm_isdst]);
+       else
+               tzinfo->tzname_daylight = NULL;
+
+       tzinfo->utc_offset = curzone->tm_gmtoff;
+#else
+       tzinfo->tzname_normal = NULL;
+       tzinfo->tzname_daylight = NULL;
+       tzinfo->utc_offset = 0;
+#endif
+
+       tzinfo->daylight = curzone->tm_isdst;
+
+       if (tz_env_value)
+               setenv ("TZ", tz_env_value, 1);
+       else
+               unsetenv ("TZ");
+
+       g_free (tz_env_value);
+       
+       return tzinfo;
+}
+
+
+void
+tz_info_free (TzInfo *tzinfo)
+{
+       g_return_if_fail (tzinfo != NULL);
+       
+       if (tzinfo->tzname_normal) g_free (tzinfo->tzname_normal);
+       if (tzinfo->tzname_daylight) g_free (tzinfo->tzname_daylight);
+       g_free (tzinfo);
+}
+
+struct {
+       const char *orig;
+       const char *dest;
+} aliases[] = {
+       { "Asia/Istanbul",  "Europe/Istanbul" },        /* Istanbul is in both Europe and Asia */
+       { "Europe/Nicosia", "Asia/Nicosia" },           /* Ditto */
+       { "EET",            "Europe/Istanbul" },        /* Same tz as the 2 above */
+       { "HST",            "Pacific/Honolulu" },
+       { "WET",            "Europe/Brussels" },        /* Other name for the mainland Europe tz */
+       { "CET",            "Europe/Brussels" },        /* ditto */
+       { "MET",            "Europe/Brussels" },
+       { "Etc/Zulu",       "Etc/GMT" },
+       { "Etc/UTC",        "Etc/GMT" },
+       { "GMT",            "Etc/GMT" },
+       { "Greenwich",      "Etc/GMT" },
+       { "Etc/UCT",        "Etc/GMT" },
+       { "Etc/GMT0",       "Etc/GMT" },
+       { "Etc/GMT+0",      "Etc/GMT" },
+       { "Etc/GMT-0",      "Etc/GMT" },
+       { "Etc/Universal",  "Etc/GMT" },
+       { "PST8PDT",        "America/Los_Angeles" },    /* Other name for the Atlantic tz */
+       { "EST",            "America/New_York" },       /* Other name for the Eastern tz */
+       { "EST5EDT",        "America/New_York" },       /* ditto */
+       { "CST6CDT",        "America/Chicago" },        /* Other name for the Central tz */
+       { "MST",            "America/Denver" },         /* Other name for the mountain tz */
+       { "MST7MDT",        "America/Denver" },         /* ditto */
+};
+
+static gboolean
+compare_timezones (const char *a,
+                  const char *b)
+{
+       if (g_str_equal (a, b))
+               return TRUE;
+       if (strchr (b, '/') == NULL) {
+               char *prefixed;
+
+               prefixed = g_strdup_printf ("/%s", b);
+               if (g_str_has_suffix (a, prefixed)) {
+                       g_free (prefixed);
+                       return TRUE;
+               }
+               g_free (prefixed);
+       }
+
+       return FALSE;
+}
+
+char *
+tz_info_get_clean_name (TzDB *tz_db,
+                       const char *tz)
+{
+       char *ret;
+       const char *timezone;
+       guint i;
+       gboolean replaced;
+
+       /* Remove useless prefixes */
+       if (g_str_has_prefix (tz, "right/"))
+               tz = tz + strlen ("right/");
+       else if (g_str_has_prefix (tz, "posix/"))
+               tz = tz + strlen ("posix/");
+
+       /* Here start the crazies */
+       replaced = FALSE;
+
+       for (i = 0; i < G_N_ELEMENTS (aliases); i++) {
+               if (compare_timezones (tz, aliases[i].orig)) {
+                       replaced = TRUE;
+                       timezone = aliases[i].dest;
+                       break;
+               }
+       }
+
+       /* Try again! */
+       if (!replaced) {
+               /* Ignore crazy solar times from the '80s */
+               if (g_str_has_prefix (tz, "Asia/Riyadh") ||
+                   g_str_has_prefix (tz, "Mideast/Riyadh")) {
+                       timezone = "Asia/Riyadh";
+                       replaced = TRUE;
+               }
+       }
+
+       if (!replaced)
+               timezone = tz;
+
+       ret = g_hash_table_lookup (tz_db->backward, timezone);
+       if (ret == NULL)
+               return g_strdup (timezone);
+       return g_strdup (ret);
+}
+
+/* ----------------- *
+ * Private functions *
+ * ----------------- */
+
+static gchar *
+tz_data_file_get (void)
+{
+       gchar *file;
+
+       file = g_strdup (TZ_DATA_FILE);
+
+       return file;
+}
+
+static float
+convert_pos (gchar *pos, int digits)
+{
+       gchar whole[10];
+       gchar *fraction;
+       gint i;
+       float t1, t2;
+       
+       if (!pos || strlen(pos) < 4 || digits > 9) return 0.0;
+       
+       for (i = 0; i < digits + 1; i++) whole[i] = pos[i];
+       whole[i] = '\0';
+       fraction = pos + digits + 1;
+
+       t1 = g_strtod (whole, NULL);
+       t2 = g_strtod (fraction, NULL);
+
+       if (t1 >= 0.0) return t1 + t2/pow (10.0, strlen(fraction));
+       else return t1 - t2/pow (10.0, strlen(fraction));
+}
+
+
+#if 0
+
+/* Currently not working */
+static void
+free_tzdata (TzLocation *tz)
+{
+       
+       if (tz->country)
+         g_free(tz->country);
+       if (tz->zone)
+         g_free(tz->zone);
+       if (tz->comment)
+         g_free(tz->comment);
+       
+       g_free(tz);
+}
+#endif
+
+
+static int
+compare_country_names (const void *a, const void *b)
+{
+       const TzLocation *tza = * (TzLocation **) a;
+       const TzLocation *tzb = * (TzLocation **) b;
+       
+       return strcmp (tza->zone, tzb->zone);
+}
+
+
+static void
+sort_locations_by_country (GPtrArray *locations)
+{
+       qsort (locations->pdata, locations->len, sizeof (gpointer),
+              compare_country_names);
+}
+
+static void
+load_backward_tz (TzDB *tz_db)
+{
+  char **lines;
+  GBytes *bytes;
+  const char *contents;
+  guint i;
+
+  tz_db->backward = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+
+  bytes = g_resources_lookup_data ("/org/gnome/control-center/datetime/backward",
+                                   G_RESOURCE_LOOKUP_FLAGS_NONE, NULL);
+  contents = (const char *) g_bytes_get_data (bytes, NULL);
+
+  lines = g_strsplit (contents, "\n", -1);
+  g_bytes_unref (bytes);
+
+  for (i = 0; lines[i] != NULL; i++)
+    {
+      char **items;
+      guint j;
+      char *real, *alias;
+
+      if (g_ascii_strncasecmp (lines[i], "Link\t", 5) != 0)
+        continue;
+
+      items = g_strsplit (lines[i], "\t", -1);
+      real = NULL;
+      alias = NULL;
+      /* Skip the "Link<tab>" part */
+      for (j = 1; items[j] != NULL; j++)
+        {
+          if (items[j][0] == '\0')
+            continue;
+          if (real == NULL)
+            {
+              real = items[j];
+              continue;
+            }
+          alias = items[j];
+          break;
+        }
+
+      if (real == NULL || alias == NULL)
+        g_warning ("Could not parse line: %s", lines[i]);
+
+      /* We don't need more than one name for it */
+      if (g_str_equal (real, "Etc/UTC") ||
+          g_str_equal (real, "Etc/UCT"))
+        real = "Etc/GMT";
+
+      g_hash_table_insert (tz_db->backward, g_strdup (alias), g_strdup (real));
+      g_strfreev (items);
+    }
+  g_strfreev (lines);
+}
+
diff --git a/gnome-initial-setup/pages/timezone/tz.h b/gnome-initial-setup/pages/timezone/tz.h
new file mode 100644
index 0000000..93905b3
--- /dev/null
+++ b/gnome-initial-setup/pages/timezone/tz.h
@@ -0,0 +1,88 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* Generic timezone utilities.
+ *
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Authors: Hans Petter Jansson <hpj ximian com>
+ * 
+ * Largely based on Michael Fulbright's work on Anaconda.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _E_TZ_H
+#define _E_TZ_H
+
+#include <glib.h>
+
+#ifndef __sun
+#  define TZ_DATA_FILE "/usr/share/zoneinfo/zone.tab"
+#else
+#  define TZ_DATA_FILE "/usr/share/lib/zoneinfo/tab/zone_sun.tab"
+#endif
+
+typedef struct _TzDB TzDB;
+typedef struct _TzLocation TzLocation;
+typedef struct _TzInfo TzInfo;
+
+
+struct _TzDB
+{
+       GPtrArray  *locations;
+       GHashTable *backward;
+};
+
+struct _TzLocation
+{
+       gchar *country;
+       gdouble latitude;
+       gdouble longitude;
+       gchar *zone;
+       gchar *comment;
+
+       gdouble dist; /* distance to clicked point for comparison */
+};
+
+/* see the glibc info page information on time zone information */
+/*  tzname_normal    is the default name for the timezone */
+/*  tzname_daylight  is the name of the zone when in daylight savings */
+/*  utc_offset       is offset in seconds from utc */
+/*  daylight         if non-zero then location obeys daylight savings */
+
+struct _TzInfo
+{
+       gchar *tzname_normal;
+       gchar *tzname_daylight;
+       glong utc_offset;
+       gint daylight;
+};
+
+
+TzDB      *tz_load_db                 (void);
+void       tz_db_free                 (TzDB *db);
+char *     tz_info_get_clean_name     (TzDB *tz_db,
+                                      const char *tz);
+GPtrArray *tz_get_locations           (TzDB *db);
+void       tz_location_get_position   (TzLocation *loc,
+                                      double *longitude, double *latitude);
+char      *tz_location_get_country    (TzLocation *loc);
+gchar     *tz_location_get_zone       (TzLocation *loc);
+gchar     *tz_location_get_comment    (TzLocation *loc);
+glong      tz_location_get_utc_offset (TzLocation *loc);
+gint       tz_location_set_locally    (TzLocation *loc);
+TzInfo    *tz_info_from_location      (TzLocation *loc);
+void       tz_info_free               (TzInfo *tz_info);
+
+#endif



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