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/*
A small wrapper utility to load indicators and put them as menu items
into the gnome-panel using it's applet interface.
Copyright 2009 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/>.
*/
#include <glib.h>
#include <glib-object.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <libdbusmenu-gtk/menu.h>
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-bindings.h>
#include <libindicator/indicator.h>
#include <libindicator/indicator-object.h>
#include <libindicator/indicator-service-manager.h>
#include "dbus-shared-names.h"
#include "dbusmenu-shared.h"
#define INDICATOR_SESSION_TYPE (indicator_session_get_type ())
#define INDICATOR_SESSION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), INDICATOR_SESSION_TYPE, IndicatorSession))
#define INDICATOR_SESSION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), INDICATOR_SESSION_TYPE, IndicatorSessionClass))
#define IS_INDICATOR_SESSION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), INDICATOR_SESSION_TYPE))
#define IS_INDICATOR_SESSION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), INDICATOR_SESSION_TYPE))
#define INDICATOR_SESSION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), INDICATOR_SESSION_TYPE, IndicatorSessionClass))
typedef struct _IndicatorSession IndicatorSession;
typedef struct _IndicatorSessionClass IndicatorSessionClass;
struct _IndicatorSessionClass {
IndicatorObjectClass parent_class;
};
struct _IndicatorSession {
IndicatorObject parent;
IndicatorServiceManager * service;
GtkImage * status_image;
DbusmenuGtkMenu * menu;
};
GType indicator_session_get_type (void);
/* Indicator stuff */
INDICATOR_SET_VERSION
INDICATOR_SET_TYPE(INDICATOR_SESSION_TYPE)
/* Prototypes */
static GtkLabel * get_label (IndicatorObject * io);
static GtkImage * get_icon (IndicatorObject * io);
static GtkMenu * get_menu (IndicatorObject * io);
static gboolean build_menu_switch (DbusmenuMenuitem * newitem, DbusmenuMenuitem * parent, DbusmenuClient * client);
static void indicator_session_class_init (IndicatorSessionClass *klass);
static void indicator_session_init (IndicatorSession *self);
static void indicator_session_dispose (GObject *object);
static void indicator_session_finalize (GObject *object);
G_DEFINE_TYPE (IndicatorSession, indicator_session, INDICATOR_OBJECT_TYPE);
static void
indicator_session_class_init (IndicatorSessionClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = indicator_session_dispose;
object_class->finalize = indicator_session_finalize;
IndicatorObjectClass * io_class = INDICATOR_OBJECT_CLASS(klass);
io_class->get_label = get_label;
io_class->get_image = get_icon;
io_class->get_menu = get_menu;
return;
}
static void
indicator_session_init (IndicatorSession *self)
{
/* Set good defaults */
self->service = NULL;
/* Now let's fire these guys up. */
self->service = indicator_service_manager_new_version(INDICATOR_SESSION_DBUS_NAME, INDICATOR_SESSION_DBUS_VERSION);
self->status_image = GTK_IMAGE(gtk_image_new_from_icon_name("system-shutdown-panel", GTK_ICON_SIZE_MENU));
self->menu = dbusmenu_gtkmenu_new(INDICATOR_SESSION_DBUS_NAME, INDICATOR_SESSION_DBUS_OBJECT);
DbusmenuClient * client = DBUSMENU_CLIENT(dbusmenu_gtkmenu_get_client(self->menu));
dbusmenu_client_add_type_handler(client, MENU_SWITCH_TYPE, build_menu_switch);
return;
}
static void
indicator_session_dispose (GObject *object)
{
IndicatorSession * self = INDICATOR_SESSION(object);
if (self->service != NULL) {
g_object_unref(G_OBJECT(self->service));
self->service = NULL;
}
G_OBJECT_CLASS (indicator_session_parent_class)->dispose (object);
return;
}
static void
indicator_session_finalize (GObject *object)
{
G_OBJECT_CLASS (indicator_session_parent_class)->finalize (object);
return;
}
static GtkLabel *
get_label (IndicatorObject * io)
{
return NULL;
}
static GtkImage *
get_icon (IndicatorObject * io)
{
gtk_widget_show(GTK_WIDGET(INDICATOR_SESSION(io)->status_image));
return INDICATOR_SESSION(io)->status_image;
}
/* Indicator based function to get the menu for the whole
applet. This starts up asking for the parts of the menu
from the various services. */
static GtkMenu *
get_menu (IndicatorObject * io)
{
return GTK_MENU(INDICATOR_SESSION(io)->menu);
}
static void
switch_property_change (DbusmenuMenuitem * item, const gchar * property, const GValue * value, gpointer user_data)
{
if (g_strcmp0(property, MENU_SWITCH_USER) != 0) {
return;
}
GtkMenuItem * gmi = dbusmenu_gtkclient_menuitem_get(DBUSMENU_GTKCLIENT(user_data), item);
gchar * finalstring = NULL;
gboolean set_ellipsize = FALSE;
/* If there's a NULL string of some type, then we want to
go back to our old 'Switch User' which isn't great but
eh, this error condition should never happen. */
if (value == NULL || g_value_get_string(value) == NULL || g_value_get_string(value)[0] == '\0') {
finalstring = _("Switch User...");
set_ellipsize = FALSE;
}
if (finalstring == NULL) {
const gchar * username = g_value_get_string(value);
GtkStyle * style = gtk_widget_get_style(GTK_WIDGET(gmi)); /* TODO: Switch to menuitem label */
PangoLayout * layout = pango_layout_new(gtk_widget_get_pango_context(GTK_WIDGET(gmi)));
pango_layout_set_text(layout, username, -1);
pango_layout_set_font_description(layout, style->font_desc);
gint width;
pango_layout_get_pixel_size(layout, &width, NULL);
g_debug("Username width %dpx", width);
gint point = pango_font_description_get_size(style->font_desc);
g_debug("Font size %f pt", (gfloat)point / PANGO_SCALE);
gdouble dpi = gdk_screen_get_resolution(gdk_screen_get_default());
g_debug("Screen DPI %f", dpi);
gdouble pixels_per_em = ((point * dpi) / 72.0f) / PANGO_SCALE;
gdouble ems = width / pixels_per_em;
g_debug("Username width %fem", ems);
/* TODO: We need some way to remove the elipsis from appearing
twice in the label. Not sure how to do that yet. */
finalstring = g_strdup_printf(_("Switch from %s..."), username);
if (ems >= 20.0f) {
set_ellipsize = TRUE;
} else {
set_ellipsize = FALSE;
}
}
gtk_menu_item_set_label(gmi, finalstring);
GtkLabel * label = GTK_LABEL(gtk_bin_get_child(GTK_BIN(gmi)));
if (label != NULL) {
if (set_ellipsize) {
gtk_label_set_ellipsize(label, PANGO_ELLIPSIZE_NONE);
} else {
gtk_label_set_ellipsize(label, PANGO_ELLIPSIZE_END);
}
}
return;
}
/* This function checks to see if the user name is short enough
to not need ellipsing itself, or if, it will get ellipsed by
the standard label processor. */
static gboolean
build_menu_switch (DbusmenuMenuitem * newitem, DbusmenuMenuitem * parent, DbusmenuClient * client)
{
GtkMenuItem * gmi = GTK_MENU_ITEM(gtk_menu_item_new());
if (gmi == NULL) {
return FALSE;
}
/* TODO: Setup style update */
dbusmenu_gtkclient_newitem_base(DBUSMENU_GTKCLIENT(client), newitem, gmi, parent);
g_signal_connect(G_OBJECT(newitem), DBUSMENU_MENUITEM_SIGNAL_PROPERTY_CHANGED, G_CALLBACK(switch_property_change), client);
switch_property_change(newitem, MENU_SWITCH_USER, dbusmenu_menuitem_property_get_value(newitem, MENU_SWITCH_USER), client);
return TRUE;
}
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