/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* Evolution calendar - Timezone selector dialog
*
* Copyright (C) 2001 Ximian, Inc.
*
* Authors: Damon Chaplin <damon@ximian.com>
*
* 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.
*/
#include <config.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkcombo.h>
#include <gtk/gtkentry.h>
#include <gtk/gtklabel.h>
#include <gnome.h>
#include <ical.h>
#include <glade/glade.h>
#include <widgets/misc/e-map.h>
#include "e-timezone-dialog.h"
#define E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA 0xc070a0ff
#define E_TIMEZONE_DIALOG_MAP_POINT_HOVER_RGBA 0xffff60ff
#define E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_1_RGBA 0xff60e0ff
#define E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_2_RGBA 0x000000ff
struct _ETimezoneDialogPrivate {
/* The TZID of the timezone. May be NULL for a 'local time' (i.e. when
the displayed name is "") or for builtin timezones which we haven't
loaded yet. */
char *tzid;
/* Glade XML data */
GladeXML *xml;
EMapPoint *point_selected;
EMapPoint *point_hover;
EMap *map;
/* The timeout used to flash the nearest point. */
guint timeout_id;
/* Widgets from the Glade file */
GtkWidget *app;
GtkWidget *map_window;
GtkWidget *timezone_preview;
GtkWidget *timezone_combo;
};
static void e_timezone_dialog_class_init (ETimezoneDialogClass *class);
static void e_timezone_dialog_init (ETimezoneDialog *etd);
static void e_timezone_dialog_destroy (GtkObject *object);
static gboolean get_widgets (ETimezoneDialog *etd);
static gboolean on_map_timeout (gpointer data);
static gboolean on_map_motion (GtkWidget *widget,
GdkEventMotion *event,
gpointer data);
static gboolean on_map_leave (GtkWidget *widget,
GdkEventCrossing *event,
gpointer data);
static gboolean on_map_visibility_changed (GtkWidget *w,
GdkEventVisibility *event,
gpointer data);
static gboolean on_map_button_pressed (GtkWidget *w,
GdkEventButton *event,
gpointer data);
static char* get_zone_from_point (ETimezoneDialog *etd,
EMapPoint *point);
static void find_selected_point (ETimezoneDialog *etd);
static void on_combo_changed (GtkEditable *entry,
ETimezoneDialog *etd);
static GtkObjectClass *parent_class;
GtkType
e_timezone_dialog_get_type (void)
{
static GtkType e_timezone_dialog_type = 0;
if (!e_timezone_dialog_type) {
static const GtkTypeInfo e_timezone_dialog_info = {
"ETimezoneDialog",
sizeof (ETimezoneDialog),
sizeof (ETimezoneDialogClass),
(GtkClassInitFunc) e_timezone_dialog_class_init,
(GtkObjectInitFunc) e_timezone_dialog_init,
NULL, /* reserved_1 */
NULL, /* reserved_2 */
(GtkClassInitFunc) NULL
};
e_timezone_dialog_type = gtk_type_unique (GTK_TYPE_OBJECT,
&e_timezone_dialog_info);
}
return e_timezone_dialog_type;
}
/* Class initialization function for the event editor */
static void
e_timezone_dialog_class_init (ETimezoneDialogClass *class)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass *) class;
parent_class = gtk_type_class (GTK_TYPE_OBJECT);
object_class->destroy = e_timezone_dialog_destroy;
}
/* Object initialization function for the event editor */
static void
e_timezone_dialog_init (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
priv = g_new0 (ETimezoneDialogPrivate, 1);
etd->priv = priv;
priv->tzid = NULL;
priv->point_selected = NULL;
priv->point_hover = NULL;
priv->timeout_id = 0;
}
/* Destroy handler for the event editor */
static void
e_timezone_dialog_destroy (GtkObject *object)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
g_return_if_fail (object != NULL);
g_return_if_fail (E_IS_TIMEZONE_DIALOG (object));
etd = E_TIMEZONE_DIALOG (object);
priv = etd->priv;
g_free (priv->tzid);
priv->tzid = NULL;
if (priv->timeout_id) {
g_source_remove (priv->timeout_id);
priv->timeout_id = 0;
}
if (priv->xml) {
gtk_object_unref (GTK_OBJECT (priv->xml));
priv->xml = NULL;
}
g_free (priv);
etd->priv = NULL;
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
e_timezone_dialog_add_timezones (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
icalarray *zones;
GtkWidget *listitem;
GtkCombo *combo;
int i;
priv = etd->priv;
combo = GTK_COMBO (priv->timezone_combo);
/* Clear any existing items in the combo. */
gtk_list_clear_items (GTK_LIST (combo->list), 0, -1);
/* Put the "None" and "UTC" entries at the top of the combo's list.
When "None" is selected we want the field to be cleared. */
listitem = gtk_list_item_new_with_label (_("None"));
gtk_combo_set_item_string (combo, GTK_ITEM (listitem), "");
gtk_widget_show (listitem);
gtk_container_add (GTK_CONTAINER (combo->list), listitem);
/* Note: We don't translate timezone names at the moment. */
listitem = gtk_list_item_new_with_label ("UTC");
gtk_widget_show (listitem);
gtk_container_add (GTK_CONTAINER (combo->list), listitem);
/* Get the array of builtin timezones. */
zones = icaltimezone_get_builtin_timezones ();
for (i = 0; i < zones->num_elements; i++) {
icaltimezone *zone;
char *location;
zone = icalarray_element_at (zones, i);
location = icaltimezone_get_location (zone);
e_map_add_point (priv->map, location,
icaltimezone_get_longitude (zone),
icaltimezone_get_latitude (zone),
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
listitem = gtk_list_item_new_with_label (location);
gtk_widget_show (listitem);
gtk_container_add (GTK_CONTAINER (combo->list), listitem);
}
}
ETimezoneDialog *
e_timezone_dialog_construct (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
GtkWidget *map;
g_return_val_if_fail (etd != NULL, NULL);
g_return_val_if_fail (E_IS_TIMEZONE_DIALOG (etd), NULL);
priv = etd->priv;
/* Load the content widgets */
priv->xml = glade_xml_new (EVOLUTION_GLADEDIR "/e-timezone-dialog.glade",
NULL);
if (!priv->xml) {
g_message ("e_timezone_dialog_construct(): Could not load the Glade XML file!");
goto error;
}
if (!get_widgets (etd)) {
g_message ("e_timezone_dialog_construct(): Could not find all widgets in the XML file!");
goto error;
}
map = GTK_WIDGET (e_map_new ());
priv->map = E_MAP (map);
gtk_widget_set_events (map, gtk_widget_get_events (map)
| GDK_LEAVE_NOTIFY_MASK
| GDK_VISIBILITY_NOTIFY_MASK);
gtk_entry_set_editable (GTK_ENTRY (GTK_COMBO (priv->timezone_combo)->entry), FALSE);
e_timezone_dialog_add_timezones (etd);
gtk_container_add (GTK_CONTAINER (priv->map_window), map);
gtk_widget_show (map);
gtk_signal_connect (GTK_OBJECT (map), "motion-notify-event",
GTK_SIGNAL_FUNC (on_map_motion), etd);
gtk_signal_connect (GTK_OBJECT (map), "leave-notify-event",
GTK_SIGNAL_FUNC (on_map_leave), etd);
gtk_signal_connect (GTK_OBJECT (map), "visibility-notify-event",
GTK_SIGNAL_FUNC (on_map_visibility_changed), etd);
gtk_signal_connect (GTK_OBJECT (map), "button-press-event",
GTK_SIGNAL_FUNC (on_map_button_pressed), etd);
gtk_signal_connect (GTK_OBJECT (GTK_COMBO (priv->timezone_combo)->entry), "changed",
GTK_SIGNAL_FUNC (on_combo_changed), etd);
return etd;
error:
gtk_object_unref (GTK_OBJECT (etd));
return NULL;
}
/* Gets the widgets from the XML file and returns if they are all available.
* For the widgets whose values can be simply set with e-dialog-utils, it does
* that as well.
*/
static gboolean
get_widgets (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
priv = etd->priv;
#define GW(name) glade_xml_get_widget (priv->xml, name)
priv->app = GW ("timezone-dialog");
priv->map_window = GW ("map-window");
priv->timezone_combo = GW ("timezone-combo");
priv->timezone_preview = GW ("timezone-preview");
return (priv->app
&& priv->map_window
&& priv->timezone_combo
&& priv->timezone_preview);
}
/**
* e_timezone_dialog_new:
*
* Creates a new event editor dialog.
*
* Return value: A newly-created event editor dialog, or NULL if the event
* editor could not be created.
**/
ETimezoneDialog *
e_timezone_dialog_new (void)
{
ETimezoneDialog *etd;
etd = E_TIMEZONE_DIALOG (gtk_type_new (E_TYPE_TIMEZONE_DIALOG));
return e_timezone_dialog_construct (E_TIMEZONE_DIALOG (etd));
}
/* This flashes the currently selected timezone in the map. */
static gboolean
on_map_timeout (gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
if (!priv->point_selected)
return TRUE;
if (e_map_point_get_color_rgba (priv->point_selected)
== E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_1_RGBA)
e_map_point_set_color_rgba (priv->map, priv->point_selected,
E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_2_RGBA);
else
e_map_point_set_color_rgba (priv->map, priv->point_selected,
E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_1_RGBA);
return TRUE;
}
static gboolean
on_map_motion (GtkWidget *widget, GdkEventMotion *event, gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
double longitude, latitude;
char *old_zone, *new_zone;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
e_map_window_to_world (priv->map, (double) event->x, (double) event->y,
&longitude, &latitude);
if (priv->point_hover && priv->point_hover != priv->point_selected)
e_map_point_set_color_rgba (priv->map, priv->point_hover,
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
priv->point_hover = e_map_get_closest_point (priv->map, longitude,
latitude, TRUE);
if (priv->point_hover != priv->point_selected)
e_map_point_set_color_rgba (priv->map, priv->point_hover,
E_TIMEZONE_DIALOG_MAP_POINT_HOVER_RGBA);
gtk_label_get (GTK_LABEL (priv->timezone_preview), &old_zone);
new_zone = get_zone_from_point (etd, priv->point_hover);
if (strcmp (old_zone, new_zone))
gtk_label_set_text (GTK_LABEL (priv->timezone_preview),
new_zone);
return TRUE;
}
static gboolean
on_map_leave (GtkWidget *widget, GdkEventCrossing *event, gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
char *old_zone;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
if (priv->point_hover && priv->point_hover != priv->point_selected)
e_map_point_set_color_rgba (priv->map, priv->point_hover,
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
priv->point_hover = NULL;
/* Clear the timezone preview label, if it isn't already empty. */
gtk_label_get (GTK_LABEL (priv->timezone_preview), &old_zone);
if (strcmp (old_zone, ""))
gtk_label_set_text (GTK_LABEL (priv->timezone_preview), "");
return FALSE;
}
static gboolean
on_map_visibility_changed (GtkWidget *w, GdkEventVisibility *event,
gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
if (event->state != GDK_VISIBILITY_FULLY_OBSCURED) {
/* Map is visible, at least partly, so make sure we flash the
selected point. */
if (!priv->timeout_id)
priv->timeout_id = gtk_timeout_add (100, on_map_timeout, etd);
} else {
/* Map is invisible, so don't waste resources on the timeout.*/
if (priv->timeout_id) {
g_source_remove (priv->timeout_id);
priv->timeout_id = 0;
}
}
return FALSE;
}
static gboolean
on_map_button_pressed (GtkWidget *w, GdkEventButton *event, gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
double longitude, latitude;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
e_map_window_to_world (priv->map, (double) event->x, (double) event->y,
&longitude, &latitude);
if (event->button != 1) {
e_map_zoom_out (priv->map);
} else {
if (e_map_get_magnification (priv->map) <= 1.0)
e_map_zoom_to_location (priv->map, longitude,
latitude);
if (priv->point_selected)
e_map_point_set_color_rgba (priv->map,
priv->point_selected,
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
priv->point_selected = priv->point_hover;
gtk_entry_set_text (GTK_ENTRY (GTK_COMBO (priv->timezone_combo)->entry),
get_zone_from_point (etd, priv->point_selected));
g_free (priv->tzid);
priv->tzid = NULL;
}
return TRUE;
}
static char*
get_zone_from_point (ETimezoneDialog *etd,
EMapPoint *point)
{
ETimezoneDialogPrivate *priv;
icalarray *zones;
double longitude, latitude;
int i;
priv = etd->priv;
if (point == NULL)
return "";
e_map_point_get_location (point, &longitude, &latitude);
/* Get the array of builtin timezones. */
zones = icaltimezone_get_builtin_timezones ();
for (i = 0; i < zones->num_elements; i++) {
icaltimezone *zone;
double zone_longitude, zone_latitude;
zone = icalarray_element_at (zones, i);
zone_longitude = icaltimezone_get_longitude (zone);
zone_latitude = icaltimezone_get_latitude (zone);
if (zone_longitude - 0.005 <= longitude &&
zone_longitude + 0.005 >= longitude &&
zone_latitude - 0.005 <= latitude &&
zone_latitude + 0.005 >= latitude)
{
return icaltimezone_get_location (zone);
}
}
g_assert_not_reached ();
return NULL;
}
/* Returns the TZID of the timezone set, and optionally its displayed name.
The TZID may be NULL, in which case the builtin timezone with the city name
of display_name should be used. If display_name is also NULL or "", then it
is assumed to be a 'local time'. */
char*
e_timezone_dialog_get_timezone (ETimezoneDialog *etd,
char **display_name)
{
ETimezoneDialogPrivate *priv;
g_return_val_if_fail (etd != NULL, NULL);
g_return_val_if_fail (E_IS_TIMEZONE_DIALOG (etd), NULL);
priv = etd->priv;
if (display_name)
*display_name = gtk_entry_get_text (GTK_ENTRY (GTK_COMBO (priv->timezone_combo)->entry));
return priv->tzid;
}
/* Sets the TZID and displayed name of the timezone. The TZID may be NULL for
a 'local time' (i.e. display_name is NULL or "") or if it is a builtin
timezone which hasn't been loaded yet. (This is done so we don't load
timezones until we really need them.) */
void
e_timezone_dialog_set_timezone (ETimezoneDialog *etd,
char *tzid,
char *display_name)
{
ETimezoneDialogPrivate *priv;
g_return_if_fail (etd != NULL);
g_return_if_fail (E_IS_TIMEZONE_DIALOG (etd));
priv = etd->priv;
if (priv->tzid)
g_free (priv->tzid);
priv->tzid = g_strdup (tzid);
gtk_entry_set_text (GTK_ENTRY (GTK_COMBO (priv->timezone_combo)->entry),
display_name ? display_name : "");
find_selected_point (etd);
}
GtkWidget*
e_timezone_dialog_get_toplevel (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
g_return_val_if_fail (etd != NULL, NULL);
g_return_val_if_fail (E_IS_TIMEZONE_DIALOG (etd), NULL);
priv = etd->priv;
return priv->app;
}
/* This tries to find the timezone corresponding to the text in the combo,
and selects the point so that it flashes. */
static void
find_selected_point (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
icalarray *zones;
char *current_zone;
EMapPoint *point = NULL;
int i;
priv = etd->priv;
current_zone = gtk_entry_get_text (GTK_ENTRY (GTK_COMBO (priv->timezone_combo)->entry));
/* Get the array of builtin timezones. */
zones = icaltimezone_get_builtin_timezones ();
for (i = 0; i < zones->num_elements; i++) {
icaltimezone *zone;
char *location;
zone = icalarray_element_at (zones, i);
location = icaltimezone_get_location (zone);
if (!strcmp (current_zone, location)) {
double zone_longitude, zone_latitude;
zone_longitude = icaltimezone_get_longitude (zone);
zone_latitude = icaltimezone_get_latitude (zone);
point = e_map_get_closest_point (priv->map,
zone_longitude,
zone_latitude,
FALSE);
break;
}
}
if (priv->point_selected)
e_map_point_set_color_rgba (priv->map, priv->point_selected,
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
priv->point_selected = point;
}
static void
on_combo_changed (GtkEditable *entry, ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
priv = etd->priv;
find_selected_point (etd);
g_free (priv->tzid);
priv->tzid = NULL;
}
