git.maemo.org Git - sbrightapplet/blob - src/simple-brightness-applet.c

   1 /*
   2  * simple-brightness-applet - simple statusarea applet that allows the user to select the brightness from a range of 1-5
   3  *
   4  * Copyright (c) 2009 Faheem Pervez <trippin1@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  19  * MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include "simple-brightness-applet.h"
  28
  29 #include <string.h>
  30 #include <libosso.h>
  31 #include <gconf/gconf-client.h>
  32 #include <gtk/gtk.h>
  33 #include <hildon/hildon.h>
  34
  35 #ifdef HILDON_DISABLE_DEPRECATED
  36 #undef HILDON_DISABLE_DEPRECATED
  37 #endif
  38
  39 HD_DEFINE_PLUGIN_MODULE (SimpleBrightnessApplet, simple_brightness_applet, HD_TYPE_STATUS_MENU_ITEM)
  40
  41 #define SIMPLE_BRIGHTNESS_GCONF_PATH "/system/osso/dsm/display"
  42 #define BRIGHTNESS_KEY SIMPLE_BRIGHTNESS_GCONF_PATH "/display_brightness"
  43
  44 #define SIMPLE_BRIGHTNESS_APPLET_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
  45                                                 SIMPLE_TYPE_BRIGHTNESS_APPLET, SimpleBrightnessAppletPrivate))
  46
  47 struct _SimpleBrightnessAppletPrivate
  48 {
  49         GConfClient *gconf_client;
  50         GtkHBox *applet_contents;
  51         HildonControlbar *brightness_ctrlbar;
  52         GtkWidget *settings_dialog;
  53         GtkWidget *dispchkbtn;
  54         GtkWidget *applet_button;
  55
  56         gulong brightness_ctrlbar_valchanged_id;
  57         gulong dispchkbtn_toggled_id;
  58         guint gconfnotify_id;
  59         guint display_keepalive_timeout;
  60
  61         gboolean keepdispon_active;
  62
  63         osso_context_t *osso_context;
  64 };
  65
  66 static void simple_brightness_applet_finalize (GObject *object);
  67
  68 /* Callbacks: */
  69 static inline void simple_brightness_applet_show_fail_msg (void)
  70 {
  71         hildon_banner_show_information (NULL, NULL, "Failed to keep backlight on");
  72 }
  73
  74 static gboolean simple_brightness_applet_keep_backlight_alive (SimpleBrightnessApplet *plugin)
  75 {
  76         osso_display_state_on (plugin->priv->osso_context);
  77         if (osso_display_blanking_pause (plugin->priv->osso_context) != OSSO_OK)
  78         {
  79                 simple_brightness_applet_show_fail_msg ();
  80                 plugin->priv->display_keepalive_timeout = 0;
  81                 g_signal_handler_block (plugin->priv->dispchkbtn, plugin->priv->dispchkbtn_toggled_id);
  82                 plugin->priv->keepdispon_active = FALSE;
  83                 hildon_check_button_set_active (HILDON_CHECK_BUTTON (plugin->priv->dispchkbtn), FALSE);
  84                 g_signal_handler_unblock (plugin->priv->dispchkbtn, plugin->priv->dispchkbtn_toggled_id);
  85                 return FALSE;
  86         }
  87         return TRUE;
  88 }
  89
  90 static void simple_brightness_applet_on_gconf_value_changed (GConfClient *gconf_client G_GNUC_UNUSED, guint cnxn_id G_GNUC_UNUSED, GConfEntry *entry G_GNUC_UNUSED, SimpleBrightnessApplet *plugin)
  91 {
  92         g_signal_handler_block (plugin->priv->brightness_ctrlbar, plugin->priv->brightness_ctrlbar_valchanged_id);
  93         hildon_controlbar_set_value (plugin->priv->brightness_ctrlbar, gconf_client_get_int (plugin->priv->gconf_client, BRIGHTNESS_KEY, NULL));
  94         g_signal_handler_unblock (plugin->priv->brightness_ctrlbar, plugin->priv->brightness_ctrlbar_valchanged_id);
  95 }
  96
  97 static void simple_brightness_applet_on_value_changed (HildonControlbar *brightness_ctrlbar G_GNUC_UNUSED, SimpleBrightnessApplet *plugin)
  98 {
  99         gconf_client_set_int (plugin->priv->gconf_client, BRIGHTNESS_KEY, hildon_controlbar_get_value (plugin->priv->brightness_ctrlbar), NULL);
 100 }
 101
 102 static void simple_brightness_applet_on_settings_button_clicked (GtkWidget *button G_GNUC_UNUSED, SimpleBrightnessApplet *plugin)
 103 {
 104         gtk_widget_hide (plugin->priv->settings_dialog);
 105
 106         if (plugin->priv->osso_context)
 107                 osso_cp_plugin_execute (plugin->priv->osso_context, "libcpdisplay.so", NULL, TRUE);
 108
 109         gtk_widget_destroy (plugin->priv->settings_dialog);
 110 }
 111
 112 static void simple_brightness_applet_on_dispchkbtn_toggled (GtkWidget *button G_GNUC_UNUSED, SimpleBrightnessApplet *plugin)
 113 {
 114         GdkPixbuf *pixbuf;
 115
 116         plugin->priv->keepdispon_active = hildon_check_button_get_active (HILDON_CHECK_BUTTON (plugin->priv->dispchkbtn));
 117         g_signal_handler_block (plugin->priv->dispchkbtn, plugin->priv->dispchkbtn_toggled_id);
 118         gtk_widget_hide(plugin->priv->settings_dialog);
 119
 120         if (plugin->priv->keepdispon_active)
 121         {
 122                 simple_brightness_applet_keep_backlight_alive (plugin);
 123                 plugin->priv->display_keepalive_timeout = g_timeout_add_seconds (50, (GSourceFunc) simple_brightness_applet_keep_backlight_alive, plugin);
 124                 if (plugin->priv->display_keepalive_timeout == 0)
 125                 {
 126                         plugin->priv->keepdispon_active = FALSE;
 127                         hildon_check_button_set_active (HILDON_CHECK_BUTTON (plugin->priv->dispchkbtn), FALSE);
 128                         simple_brightness_applet_show_fail_msg ();
 129                         goto finish;
 130                 }
 131
 132                 gtk_widget_set_name (plugin->priv->applet_button, "hildon-reject-button-finger");
 133                 pixbuf = gtk_icon_theme_load_icon (gtk_icon_theme_get_default (), "general_brightness", 18, 0, NULL);
 134                 if (pixbuf)
 135                 {
 136                         hd_status_plugin_item_set_status_area_icon (HD_STATUS_PLUGIN_ITEM (plugin), pixbuf);
 137                         g_object_unref (pixbuf);
 138                 }
 139         }
 140         else
 141         {
 142                 if (g_source_remove (plugin->priv->display_keepalive_timeout))
 143                 {
 144                         gtk_widget_set_name (plugin->priv->applet_button, "GtkButton-finger");
 145                         hd_status_plugin_item_set_status_area_icon (HD_STATUS_PLUGIN_ITEM (plugin), NULL);
 146                         plugin->priv->display_keepalive_timeout = 0;
 147                 }
 148                 else
 149                 {
 150                         plugin->priv->keepdispon_active = TRUE;
 151                         hildon_check_button_set_active (HILDON_CHECK_BUTTON (plugin->priv->dispchkbtn), plugin->priv->keepdispon_active);
 152                 }
 153         }
 154
 155 finish:
 156         g_signal_handler_unblock (plugin->priv->dispchkbtn, plugin->priv->dispchkbtn_toggled_id);
 157         gtk_widget_destroy(plugin->priv->settings_dialog);
 158 }
 159
 160 /* Setup applet and dialogs: */
 161 static void simple_brightness_applet_on_button_clicked (GtkWidget *button, SimpleBrightnessApplet *plugin)
 162 {
 163         GtkWidget *settings_button;
 164
 165         gtk_widget_hide (gtk_widget_get_toplevel (button));
 166
 167         plugin->priv->settings_dialog = gtk_dialog_new ();
 168         gtk_window_set_title (GTK_WINDOW (plugin->priv->settings_dialog), "Simple Brightness Applet:");
 169         gtk_window_set_destroy_with_parent (GTK_WINDOW (plugin->priv->settings_dialog), TRUE);
 170
 171         settings_button = hildon_gtk_button_new (HILDON_SIZE_FINGER_HEIGHT | HILDON_SIZE_AUTO_WIDTH);
 172         gtk_button_set_label (GTK_BUTTON (settings_button), "Open Display Settings...");
 173         gtk_button_set_image (GTK_BUTTON (settings_button), gtk_image_new_from_icon_name ("general_brightness", HILDON_ICON_SIZE_THUMB));
 174         gtk_box_pack_start (GTK_BOX (GTK_DIALOG (plugin->priv->settings_dialog)->vbox), settings_button, TRUE, TRUE, 0);
 175         g_signal_connect (settings_button, "clicked", G_CALLBACK (simple_brightness_applet_on_settings_button_clicked), plugin);
 176
 177         plugin->priv->dispchkbtn = hildon_check_button_new (HILDON_SIZE_FINGER_HEIGHT | HILDON_SIZE_AUTO_WIDTH);
 178         gtk_button_set_label (GTK_BUTTON (plugin->priv->dispchkbtn), "Keep display on");
 179         gtk_button_set_alignment (GTK_BUTTON (plugin->priv->dispchkbtn), 0.5f, 0.5f);
 180         hildon_check_button_set_active (HILDON_CHECK_BUTTON (plugin->priv->dispchkbtn), plugin->priv->keepdispon_active);
 181         gtk_box_pack_start (GTK_BOX (GTK_DIALOG (plugin->priv->settings_dialog)->vbox), plugin->priv->dispchkbtn, TRUE, TRUE, 0);
 182         plugin->priv->dispchkbtn_toggled_id = g_signal_connect (plugin->priv->dispchkbtn, "toggled", G_CALLBACK (simple_brightness_applet_on_dispchkbtn_toggled), plugin);
 183
 184         gtk_widget_show_all (plugin->priv->settings_dialog);
 185 }
 186
 187 static inline void simple_brightness_applet_setup (SimpleBrightnessApplet *plugin)
 188 {
 189         plugin->priv->applet_contents = GTK_HBOX (gtk_hbox_new (FALSE, 0));
 190
 191         plugin->priv->applet_button = hildon_gtk_button_new (HILDON_SIZE_FINGER_HEIGHT);
 192         gtk_box_pack_start (GTK_BOX (plugin->priv->applet_contents), plugin->priv->applet_button, FALSE, TRUE, 0);
 193         g_signal_connect (plugin->priv->applet_button, "clicked", G_CALLBACK(simple_brightness_applet_on_button_clicked), plugin);
 194         gtk_button_set_image (GTK_BUTTON (plugin->priv->applet_button), gtk_image_new_from_icon_name ("general_brightness", HILDON_ICON_SIZE_THUMB));
 195
 196         plugin->priv->brightness_ctrlbar = HILDON_CONTROLBAR (hildon_controlbar_new ()); /* Yes, I know: I'm very naughty for using a depreciated widget. But let me know, Nokia, when you actually stop using it too. */
 197         hildon_gtk_widget_set_theme_size(GTK_WIDGET(plugin->priv->brightness_ctrlbar), HILDON_SIZE_FINGER_HEIGHT | HILDON_SIZE_AUTO_WIDTH);
 198         hildon_controlbar_set_range (plugin->priv->brightness_ctrlbar, gconf_client_get_int(plugin->priv->gconf_client, "/system/osso/dsm/display/display_brightness_level_step", NULL), gconf_client_get_int(plugin->priv->gconf_client, "/system/osso/dsm/display/max_display_brightness_levels", NULL));
 199         hildon_controlbar_set_value (plugin->priv->brightness_ctrlbar, gconf_client_get_int(plugin->priv->gconf_client, BRIGHTNESS_KEY, NULL));
 200         plugin->priv->brightness_ctrlbar_valchanged_id = g_signal_connect (plugin->priv->brightness_ctrlbar, "value-changed", G_CALLBACK(simple_brightness_applet_on_value_changed), plugin);
 201         gtk_box_pack_start (GTK_BOX (plugin->priv->applet_contents), GTK_WIDGET (plugin->priv->brightness_ctrlbar), FALSE, TRUE, 0);
 202
 203         gconf_client_add_dir (plugin->priv->gconf_client, SIMPLE_BRIGHTNESS_GCONF_PATH, GCONF_CLIENT_PRELOAD_NONE, NULL);
 204         plugin->priv->gconfnotify_id = gconf_client_notify_add (plugin->priv->gconf_client, BRIGHTNESS_KEY, (GConfClientNotifyFunc)simple_brightness_applet_on_gconf_value_changed, plugin, NULL, NULL);
 205 }
 206
 207 /* GObject stuff: */
 208 static void simple_brightness_applet_class_init (SimpleBrightnessAppletClass *klass)
 209 {
 210         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 211
 212         object_class->finalize = (GObjectFinalizeFunc) simple_brightness_applet_finalize;
 213
 214         g_type_class_add_private (klass, sizeof (SimpleBrightnessAppletPrivate));
 215 }
 216
 217 static void simple_brightness_applet_class_finalize (SimpleBrightnessAppletClass *klass G_GNUC_UNUSED) {}
 218
 219 static void simple_brightness_applet_init (SimpleBrightnessApplet *plugin)
 220 {
 221         plugin->priv = SIMPLE_BRIGHTNESS_APPLET_GET_PRIVATE (plugin);
 222         if (G_UNLIKELY (!plugin->priv))
 223                 return;
 224         memset (plugin->priv, 0, sizeof (SimpleBrightnessAppletPrivate));
 225
 226         plugin->priv->keepdispon_active = FALSE;
 227
 228         plugin->priv->osso_context = osso_initialize (PACKAGE, PACKAGE_VERSION, TRUE, NULL);
 229         if (G_UNLIKELY (!plugin->priv->osso_context))
 230                 return;
 231
 232         plugin->priv->gconf_client = gconf_client_get_default ();
 233         if (G_UNLIKELY (!plugin->priv->gconf_client))
 234                 return;
 235
 236         simple_brightness_applet_setup (plugin);
 237         gtk_container_add (GTK_CONTAINER (plugin), GTK_WIDGET (plugin->priv->applet_contents));
 238         gtk_widget_show_all (GTK_WIDGET (plugin));
 239 }
 240
 241 static void simple_brightness_applet_finalize (GObject *object)
 242 {
 243         SimpleBrightnessApplet *plugin = SIMPLE_BRIGHTNESS_APPLET (object);
 244
 245         if (plugin->priv->brightness_ctrlbar_valchanged_id != 0)
 246                 g_signal_handler_disconnect (plugin->priv->brightness_ctrlbar, plugin->priv->brightness_ctrlbar_valchanged_id);
 247
 248         if (plugin->priv->display_keepalive_timeout != 0)
 249                 g_source_remove (plugin->priv->display_keepalive_timeout);
 250
 251         if (plugin->priv->gconfnotify_id != 0)
 252         {
 253                 gconf_client_notify_remove (plugin->priv->gconf_client, plugin->priv->gconfnotify_id);
 254                 gconf_client_remove_dir (plugin->priv->gconf_client, SIMPLE_BRIGHTNESS_GCONF_PATH, NULL);
 255         }
 256
 257         if (plugin->priv->gconf_client)
 258         {
 259                 gconf_client_clear_cache (plugin->priv->gconf_client);
 260                 g_object_unref (plugin->priv->gconf_client);
 261         }
 262
 263         if (plugin->priv->osso_context)
 264                 osso_deinitialize (plugin->priv->osso_context);
 265
 266         G_OBJECT_CLASS (simple_brightness_applet_parent_class)->finalize (object);
 267 }