[gnome-flashback] power-applet: add status icon

[Alberts Muktupāvels <muktupavels src gnome org>]

commit f692640283cd8a8ea86161535f076fb5ceb5d73d
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Sep 10 00:34:55 2015 +0300

    power-applet: add status icon
    
    Thanks György Balló for initial version in javascript.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=753425

 configure.ac                                      |    2 +-
 gnome-flashback/libpower-applet/gf-power-applet.c |  306 ++++++++++++++++++++-
 po/POTFILES.in                                    |    1 +
 3 files changed, 307 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1c19e0e..92cff57 100644
--- a/configure.ac
+++ b/configure.ac
@@ -71,7 +71,7 @@ PKG_CHECK_MODULES(POLKIT, gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED p
 AC_SUBST(POLKIT_CFLAGS)
 AC_SUBST(POLKIT_LIBS)
 
-PKG_CHECK_MODULES(POWER_APPLET, gtk+-3.0 >= $GTK_REQUIRED)
+PKG_CHECK_MODULES(POWER_APPLET, gtk+-3.0 >= $GTK_REQUIRED upower-glib)
 AC_SUBST(POWER_APPLET_CFLAGS)
 AC_SUBST(POWER_APPLET_LIBS)
 
diff --git a/gnome-flashback/libpower-applet/gf-power-applet.c 
b/gnome-flashback/libpower-applet/gf-power-applet.c
index 3d05485..afdd283 100644
--- a/gnome-flashback/libpower-applet/gf-power-applet.c
+++ b/gnome-flashback/libpower-applet/gf-power-applet.c
@@ -17,23 +17,327 @@
 
 #include "config.h"
 
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+#include <libupower-glib/upower.h>
+#include <math.h>
+
 #include "gf-power-applet.h"
+#include "gf-upower-device.h"
+
+#define UPOWER_DBUS_NAME "org.freedesktop.UPower"
+#define UPOWER_DEVICE_DBUS_PATH "/org/freedesktop/UPower/devices/DisplayDevice"
 
 struct _GfPowerApplet
 {
-  GObject parent;
+  GObject         parent;
+
+  GtkStatusIcon  *status_icon;
+  GfUPowerDevice *device;
 };
 
 G_DEFINE_TYPE (GfPowerApplet, gf_power_applet, G_TYPE_OBJECT)
 
 static void
+statistics_cb (GtkMenuItem *item,
+               gpointer     user_data)
+{
+  GAppInfo *app_info;
+  GError *error;
+
+  error = NULL;
+  app_info = g_app_info_create_from_commandline ("gnome-power-statistics",
+                                                 "Power Statistics",
+                                                 G_APP_INFO_CREATE_NONE,
+                                                 &error);
+
+  if (error != NULL)
+    {
+      g_warning ("Failed to crete GAppInfo from commandline - %s",
+                 error->message);
+      g_error_free (error);
+    }
+  else
+    {
+      g_app_info_launch (app_info, NULL, NULL, &error);
+
+      if (error != NULL)
+        {
+          g_warning ("Failed to start Power Statistics - %s", error->message);
+          g_error_free (error);
+        }
+    }
+
+  g_clear_object (&app_info);
+}
+
+static void
+settings_cb (GtkMenuItem *item,
+             gpointer     user_data)
+{
+  GAppInfo *app_info;
+  GError *error;
+
+  error = NULL;
+  app_info = g_app_info_create_from_commandline ("gnome-control-center power",
+                                                 "Power Settings",
+                                                 G_APP_INFO_CREATE_NONE,
+                                                 &error);
+
+  if (error != NULL)
+    {
+      g_warning ("Failed to crete GAppInfo from commandline - %s",
+                 error->message);
+      g_error_free (error);
+    }
+  else
+    {
+      g_app_info_launch (app_info, NULL, NULL, &error);
+
+      if (error != NULL)
+        {
+          g_warning ("Failed to start Power Settings - %s", error->message);
+          g_error_free (error);
+        }
+    }
+
+  g_clear_object (&app_info);
+}
+
+static void
+popup_menu_cb (GtkStatusIcon *status_icon,
+               guint          button,
+               guint          activate_time,
+               gpointer       user_data)
+{
+  const gchar *title;
+  gchar *tooltip_text;
+  gchar *label;
+  GtkWidget *menu;
+  GtkWidget *item;
+
+  G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+
+  title = gtk_status_icon_get_title (status_icon);
+  tooltip_text = gtk_status_icon_get_tooltip_text (status_icon);
+  label = g_strdup_printf ("%s: %s", title, tooltip_text);
+  g_free (tooltip_text);
+
+  menu = gtk_menu_new ();
+
+  item = gtk_menu_item_new_with_label (label);
+  g_free (label);
+  gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
+  g_signal_connect (item, "activate", G_CALLBACK (statistics_cb), NULL);
+
+  item = gtk_menu_item_new_with_label (_("Power Settings"));
+  gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
+  g_signal_connect (item, "activate", G_CALLBACK (settings_cb), NULL);
+
+  gtk_widget_show_all (menu);
+  gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
+                  gtk_status_icon_position_menu, status_icon,
+                  button, activate_time);
+
+  G_GNUC_END_IGNORE_DEPRECATIONS
+}
+
+static gchar *
+get_icon_name (GfPowerApplet *applet)
+{
+  gchar *icon_name;
+  gchar *symbolic;
+
+  icon_name = g_strdup (gf_upower_device_get_icon_name (applet->device));
+
+  if (icon_name == NULL || icon_name[0] == '\0')
+    {
+      g_free (icon_name);
+      return g_strdup ("battery");
+    }
+
+  symbolic = g_strrstr (icon_name, "-symbolic");
+
+  if (symbolic != NULL)
+    g_strlcpy (symbolic, "", sizeof (symbolic));
+
+  return icon_name;
+}
+
+static gchar *
+get_tooltip_text (GfPowerApplet *applet)
+{
+  UpDeviceState state;
+  gint64 seconds;
+  gdouble time;
+  gdouble minutes;
+  gdouble hours;
+  gdouble percentage;
+
+  state = gf_upower_device_get_state (applet->device);
+
+  if (state == UP_DEVICE_STATE_FULLY_CHARGED)
+    return g_strdup (_("Fully Charged"));
+  else if (state == UP_DEVICE_STATE_EMPTY)
+    return g_strdup (_("Empty"));
+  else if (state == UP_DEVICE_STATE_CHARGING)
+    seconds = gf_upower_device_get_time_to_full (applet->device);
+  else if (state == UP_DEVICE_STATE_DISCHARGING)
+    seconds = gf_upower_device_get_time_to_empty (applet->device);
+  else
+    return g_strdup (_("Estimating..."));
+
+  time = round (seconds / 60);
+
+  if (time == 0)
+    return g_strdup (_("Estimating..."));
+
+  minutes = fmod (time, 60);
+  hours = floor (time / 60);
+  percentage = gf_upower_device_get_percentage (applet->device);
+
+  if (state == UP_DEVICE_STATE_DISCHARGING)
+    {
+      /* Translators: this is <hours>:<minutes> Remaining (<percentage>) */
+      return g_strdup_printf (_("%.0f:%02.0f Remaining (%.0f%%)"),
+                              hours, minutes, percentage);
+    }
+
+  if (state == UP_DEVICE_STATE_CHARGING)
+    {
+      /* Translators: this is <hours>:<minutes> Until Full (<percentage>) */
+      return g_strdup_printf (_("%.0f:%02.0f Remaining (%.0f%%)"),
+                              hours, minutes, percentage);
+    }
+
+  return NULL;
+}
+
+static const gchar *
+get_title (GfPowerApplet *applet)
+{
+  UpDeviceKind type;
+
+  type = gf_upower_device_get_type_ (applet->device);
+
+  if (type == UP_DEVICE_KIND_UPS)
+    return _("UPS");
+
+  return _("Battery");
+}
+
+static void
+gf_power_applet_sync (GfPowerApplet *applet)
+{
+  gchar *icon_name;
+  gchar *tooltip_text;
+  const gchar *title;
+  gboolean is_present;
+
+  G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+
+  icon_name = get_icon_name (applet);
+  gtk_status_icon_set_from_icon_name (applet->status_icon, icon_name);
+  g_free (icon_name);
+
+  tooltip_text = get_tooltip_text (applet);
+  gtk_status_icon_set_tooltip_text (applet->status_icon, tooltip_text);
+  g_free (tooltip_text);
+
+  title = get_title (applet);
+  gtk_status_icon_set_title (applet->status_icon, title);
+
+  is_present = gf_upower_device_get_is_present (applet->device);
+  gtk_status_icon_set_visible (applet->status_icon, is_present);
+
+  G_GNUC_END_IGNORE_DEPRECATIONS
+}
+
+static void
+properties_changed_cb (GDBusProxy *proxy,
+                       GVariant   *changed_properties,
+                       GStrv       invalidated_properties,
+                       gpointer    user_data)
+{
+  GfPowerApplet *applet;
+
+  applet = GF_POWER_APPLET (user_data);
+
+  gf_power_applet_sync (applet);
+}
+
+static void
+device_proxy_ready_cb (GObject      *source_object,
+                       GAsyncResult *res,
+                       gpointer      user_data)
+{
+  GfPowerApplet *applet;
+  GError *error;
+
+  applet = GF_POWER_APPLET (user_data);
+
+  error = NULL;
+  applet->device = gf_upower_device_proxy_new_for_bus_finish (res, &error);
+
+  if (error != NULL)
+    {
+      g_warning ("Failed to get UPower device proxy - %s", error->message);
+      g_error_free (error);
+
+      return;
+    }
+
+  g_signal_connect (applet->device, "g-properties-changed",
+                    G_CALLBACK (properties_changed_cb), applet);
+
+  gf_power_applet_sync (applet);
+}
+
+static void
+gf_power_applet_dispose (GObject *object)
+{
+  GfPowerApplet *applet;
+
+  applet = GF_POWER_APPLET (object);
+
+  g_clear_object (&applet->status_icon);
+  g_clear_object (&applet->device);
+
+  G_OBJECT_CLASS (gf_power_applet_parent_class)->dispose (object);
+}
+
+static void
 gf_power_applet_class_init (GfPowerAppletClass *applet_class)
 {
+  GObjectClass *object_class;
+
+  object_class = G_OBJECT_CLASS (applet_class);
+
+  object_class->dispose = gf_power_applet_dispose;
 }
 
 static void
 gf_power_applet_init (GfPowerApplet *applet)
 {
+  G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+
+  applet->status_icon = gtk_status_icon_new ();
+
+  gtk_status_icon_set_title (applet->status_icon, _("Power status"));
+  gtk_status_icon_set_tooltip_text (applet->status_icon, _("Power"));
+
+  G_GNUC_END_IGNORE_DEPRECATIONS
+
+  g_signal_connect (applet->status_icon, "popup-menu",
+                    G_CALLBACK (popup_menu_cb), applet);
+
+  gf_upower_device_proxy_new_for_bus (G_BUS_TYPE_SYSTEM,
+                                      G_DBUS_PROXY_FLAGS_NONE,
+                                      UPOWER_DBUS_NAME,
+                                      UPOWER_DEVICE_DBUS_PATH,
+                                      NULL,
+                                      device_proxy_ready_cb,
+                                      applet);
 }
 
 GfPowerApplet *
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 43a93f0..0be07fd 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -21,6 +21,7 @@ gnome-flashback/libpolkit/flashback-authenticator.c
 gnome-flashback/libpolkit/flashback-listener.c
 gnome-flashback/libpolkit/flashback-polkit-dialog.c
 [type: gettext/glade]gnome-flashback/libpolkit/flashback-polkit-dialog.ui
+gnome-flashback/libpower-applet/gf-power-applet.c
 gnome-flashback/libsound-applet/gf-sound-applet.c
 gnome-flashback/libsound-applet/gvc-channel-bar.c
 gnome-flashback/libsound-applet/gvc/gvc-mixer-control.c