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/*
An indicator to time and date related information in the menubar.
Copyright 2010 Canonical Ltd.
Authors:
Ted Gould <ted@canonical.com>
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License version 3, as published
by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranties of
MERCHANTABILITY, SATISFACTORY QUALITY, 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/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* GStuff */
#include <glib.h>
#include <glib-object.h>
#include <glib/gi18n-lib.h>
/* Indicator Stuff */
#include <libindicator/indicator.h>
#include <libindicator/indicator-object.h>
#include <libindicator/indicator-service-manager.h>
/* DBusMenu */
#include <libdbusmenu-gtk/menu.h>
#include "dbus-shared.h"
#define INDICATOR_DATETIME_TYPE (indicator_datetime_get_type ())
#define INDICATOR_DATETIME(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), INDICATOR_DATETIME_TYPE, IndicatorDatetime))
#define INDICATOR_DATETIME_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), INDICATOR_DATETIME_TYPE, IndicatorDatetimeClass))
#define IS_INDICATOR_DATETIME(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), INDICATOR_DATETIME_TYPE))
#define IS_INDICATOR_DATETIME_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), INDICATOR_DATETIME_TYPE))
#define INDICATOR_DATETIME_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), INDICATOR_DATETIME_TYPE, IndicatorDatetimeClass))
typedef struct _IndicatorDatetime IndicatorDatetime;
typedef struct _IndicatorDatetimeClass IndicatorDatetimeClass;
typedef struct _IndicatorDatetimePrivate IndicatorDatetimePrivate;
struct _IndicatorDatetimeClass {
IndicatorObjectClass parent_class;
};
struct _IndicatorDatetime {
IndicatorObject parent;
IndicatorDatetimePrivate * priv;
};
struct _IndicatorDatetimePrivate {
GtkLabel * label;
guint timer;
gchar * time_format;
guint idle_measure;
gint max_width;
IndicatorServiceManager * sm;
DbusmenuGtkMenu * menu;
};
/* Enum for the properties so that they can be quickly
found and looked up. */
enum {
PROP_0,
PROP_TIME_FORMAT
};
#define PROP_TIME_FORMAT_S "time-format"
#define SETTING_TIME_FORMAT_S "indicator-time-format"
#define DEFAULT_TIME_FORMAT "%l:%M %p"
#define INDICATOR_DATETIME_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE ((o), INDICATOR_DATETIME_TYPE, IndicatorDatetimePrivate))
GType indicator_datetime_get_type (void);
static void indicator_datetime_class_init (IndicatorDatetimeClass *klass);
static void indicator_datetime_init (IndicatorDatetime *self);
static void set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec);
static void get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec);
static void indicator_datetime_dispose (GObject *object);
static void indicator_datetime_finalize (GObject *object);
static GtkLabel * get_label (IndicatorObject * io);
static GtkMenu * get_menu (IndicatorObject * io);
/* Indicator Module Config */
INDICATOR_SET_VERSION
INDICATOR_SET_TYPE(INDICATOR_DATETIME_TYPE)
G_DEFINE_TYPE (IndicatorDatetime, indicator_datetime, INDICATOR_OBJECT_TYPE);
static void
indicator_datetime_class_init (IndicatorDatetimeClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (IndicatorDatetimePrivate));
object_class->dispose = indicator_datetime_dispose;
object_class->finalize = indicator_datetime_finalize;
object_class->set_property = set_property;
object_class->get_property = get_property;
IndicatorObjectClass * io_class = INDICATOR_OBJECT_CLASS(klass);
io_class->get_label = get_label;
io_class->get_menu = get_menu;
/**
IndicatorDatetime:time-format:
The format that is used to show the time on the panel.
*/
g_object_class_install_property (object_class,
PROP_TIME_FORMAT,
g_param_spec_string(PROP_TIME_FORMAT_S,
"The format that is used to show the time on the panel.",
"A format string in the form used to pass to strftime to make a string for displaying on the panel.",
DEFAULT_TIME_FORMAT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
return;
}
static void
indicator_datetime_init (IndicatorDatetime *self)
{
self->priv = INDICATOR_DATETIME_GET_PRIVATE(self);
self->priv->label = NULL;
self->priv->timer = 0;
self->priv->idle_measure = 0;
self->priv->max_width = 0;
self->priv->time_format = g_strdup(DEFAULT_TIME_FORMAT);
self->priv->sm = NULL;
self->priv->menu = NULL;
self->priv->sm = indicator_service_manager_new_version(SERVICE_NAME, SERVICE_VERSION);
return;
}
static void
indicator_datetime_dispose (GObject *object)
{
IndicatorDatetime * self = INDICATOR_DATETIME(object);
if (self->priv->label != NULL) {
g_object_unref(self->priv->label);
self->priv->label = NULL;
}
if (self->priv->timer != 0) {
g_source_remove(self->priv->timer);
self->priv->timer = 0;
}
if (self->priv->idle_measure != 0) {
g_source_remove(self->priv->idle_measure);
self->priv->idle_measure = 0;
}
if (self->priv->menu != NULL) {
g_object_unref(G_OBJECT(self->priv->menu));
self->priv->menu = NULL;
}
if (self->priv->sm != NULL) {
g_object_unref(G_OBJECT(self->priv->sm));
self->priv->sm = NULL;
}
G_OBJECT_CLASS (indicator_datetime_parent_class)->dispose (object);
return;
}
static void
indicator_datetime_finalize (GObject *object)
{
IndicatorDatetime * self = INDICATOR_DATETIME(object);
if (self->priv->time_format != NULL) {
g_free(self->priv->time_format);
self->priv->time_format = NULL;
}
G_OBJECT_CLASS (indicator_datetime_parent_class)->finalize (object);
return;
}
static void
set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{
g_return_if_fail(prop_id == PROP_TIME_FORMAT);
IndicatorDatetime * self = INDICATOR_DATETIME(object);
if (self->priv->time_format != NULL) {
g_free(self->priv->time_format);
self->priv->time_format = NULL;
}
self->priv->time_format = g_value_dup_string(value);
g_debug("Changing time format to '%s'", self->priv->time_format);
return;
}
static void
get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
{
g_return_if_fail(prop_id == PROP_TIME_FORMAT);
IndicatorDatetime * self = INDICATOR_DATETIME(object);
g_value_set_string(value, self->priv->time_format);
return;
}
/* Looks at the size of the label, if it grew beyond what we
thought was the max, make sure it doesn't shrink again. */
static gboolean
idle_measure (gpointer data)
{
IndicatorDatetime * self = INDICATOR_DATETIME(data);
self->priv->idle_measure = 0;
GtkAllocation allocation;
gtk_widget_get_allocation(GTK_WIDGET(self->priv->label), &allocation);
if (allocation.width > self->priv->max_width) {
if (self->priv->max_width != 0) {
g_warning("Guessed wrong. We thought the max would be %d but we're now at %d", self->priv->max_width, allocation.width);
}
self->priv->max_width = allocation.width;
gtk_widget_set_size_request(GTK_WIDGET(self->priv->label), self->priv->max_width, -1);
}
return FALSE;
}
/* Updates the label to be the current time. */
static void
update_label (IndicatorDatetime * io)
{
IndicatorDatetime * self = INDICATOR_DATETIME(io);
if (self->priv->label == NULL) return;
gchar longstr[128];
time_t t;
struct tm *ltime;
t = time(NULL);
ltime = localtime(&t);
if (ltime == NULL) {
g_debug("Error getting local time");
gtk_label_set_label(self->priv->label, _("Error getting time"));
return;
}
strftime(longstr, 128, self->priv->time_format, ltime);
gchar * utf8 = g_locale_to_utf8(longstr, -1, NULL, NULL, NULL);
gtk_label_set_label(self->priv->label, utf8);
g_free(utf8);
if (self->priv->idle_measure == 0) {
self->priv->idle_measure = g_idle_add(idle_measure, io);
}
return;
}
/* Runs every minute and updates the time */
gboolean
minute_timer_func (gpointer user_data)
{
IndicatorDatetime * self = INDICATOR_DATETIME(user_data);
if (self->priv->label != NULL) {
update_label(self);
return TRUE;
} else {
self->priv->timer = 0;
return FALSE;
}
return FALSE;
}
/* Does a quick meausre of how big the string is in
pixels with a Pango layout */
static gint
measure_string (GtkStyle * style, PangoContext * context, const gchar * string)
{
PangoLayout * layout = pango_layout_new(context);
pango_layout_set_text(layout, string, -1);
pango_layout_set_font_description(layout, style->font_desc);
gint width;
pango_layout_get_pixel_size(layout, &width, NULL);
g_object_unref(layout);
return width;
}
#define FAT_NUMBER 8
/* Try to get a good guess at what a maximum width of the entire
string would be. */
static void
guess_label_size (IndicatorDatetime * self)
{
GtkStyle * style = gtk_widget_get_style(GTK_WIDGET(self->priv->label));
PangoContext * context = gtk_widget_get_pango_context(GTK_WIDGET(self->priv->label));
/* TRANSLATORS: This string is used for measuring the size of
the font used for showing the time and is not shown to the
user anywhere. */
gchar * am_str = g_strdup_printf(_("%d%d:%d%d AM"), FAT_NUMBER, FAT_NUMBER, FAT_NUMBER, FAT_NUMBER);
gint am_width = measure_string(style, context, am_str);
g_free(am_str);
/* TRANSLATORS: This string is used for measuring the size of
the font used for showing the time and is not shown to the
user anywhere. */
gchar * pm_str = g_strdup_printf(_("%d%d:%d%d PM"), FAT_NUMBER, FAT_NUMBER, FAT_NUMBER, FAT_NUMBER);
gint pm_width = measure_string(style, context, pm_str);
g_free(pm_str);
self->priv->max_width = MAX(am_width, pm_width);
gtk_widget_set_size_request(GTK_WIDGET(self->priv->label), self->priv->max_width, -1);
g_debug("Guessing max time width: %d", self->priv->max_width);
return;
}
/* React to the style changing, which could mean an font
update. */
static void
style_changed (GtkWidget * widget, GtkStyle * oldstyle, gpointer data)
{
g_debug("New style for time label");
IndicatorDatetime * self = INDICATOR_DATETIME(data);
guess_label_size(self);
update_label(self);
return;
}
/* Grabs the label. Creates it if it doesn't
exist already */
static GtkLabel *
get_label (IndicatorObject * io)
{
IndicatorDatetime * self = INDICATOR_DATETIME(io);
/* If there's not a label, we'll build ourselves one */
if (self->priv->label == NULL) {
self->priv->label = GTK_LABEL(gtk_label_new("Time"));
g_object_ref(G_OBJECT(self->priv->label));
g_signal_connect(G_OBJECT(self->priv->label), "style-set", G_CALLBACK(style_changed), self);
guess_label_size(self);
update_label(self);
gtk_widget_show(GTK_WIDGET(self->priv->label));
}
if (self->priv->timer == 0) {
self->priv->timer = g_timeout_add_seconds(60, minute_timer_func, self);
}
return self->priv->label;
}
static GtkMenu *
get_menu (IndicatorObject * io)
{
IndicatorDatetime * self = INDICATOR_DATETIME(io);
if (self->priv->menu == NULL) {
self->priv->menu = dbusmenu_gtkmenu_new(SERVICE_NAME, MENU_OBJ);
}
return GTK_MENU(self->priv->menu);
}
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