2 * Flashlight applet (widget) for Maemo.
3 * Copyright (C) 2009 Roman Moravcik
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include <hildon/hildon.h>
29 #include <glib/gi18n-lib.h>
31 #include <dbus/dbus.h>
33 #include "flashlight_applet.h"
34 #include "flashlight_lib.h"
36 #define MSG_FLASHLIGHT_ON _("On")
37 #define MSG_FLASHLIGHT_OFF _("Off")
39 #define ICON_FLASHLIGHT_ON "statusarea_flashlight_on"
40 #define ICON_FLASHLIGHT_OFF "statusarea_flashlight_off"
42 #define CAM_COVER_UDI "/org/freedesktop/Hal/devices/platform_cam_shutter"
43 #define CAM_COVER_STATE "button.state.value"
45 #define FLASHLIGHT_STATUS_PLUGIN_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE (obj, \
46 TYPE_FLASHLIGHT_STATUS_PLUGIN, FlashlightPluginPrivate))
48 struct _FlashlightPluginPrivate
53 FlashlightContext_t *flashlight;
57 HD_DEFINE_PLUGIN_MODULE (FlashlightPlugin, flashlight_status_plugin, HD_TYPE_STATUS_MENU_ITEM)
59 static gboolean flashlight_status_plugin_status (gpointer data);
60 static void flashlight_status_plugin_finalize (GObject *object);
63 flashlight_status_plugin_show_notification (FlashlightPlugin *plugin,
66 FlashlightPluginPrivate *priv = FLASHLIGHT_STATUS_PLUGIN_GET_PRIVATE (plugin);
69 g_return_if_fail (priv);
71 banner = hildon_banner_show_information (GTK_WIDGET (priv->button), NULL, text);
72 hildon_banner_set_timeout (HILDON_BANNER (banner), 3000);
76 flashlight_status_plugin_enable (FlashlightPlugin *plugin,
79 FlashlightPluginPrivate *priv = FLASHLIGHT_STATUS_PLUGIN_GET_PRIVATE (plugin);
81 g_return_if_fail (priv);
84 if (flashlight_open (priv->flashlight, "/dev/video0") < 0) {
85 flashlight_status_plugin_show_notification (plugin,
86 _("Unable to initialize flashlight.\nCamera in use by another application."));
87 flashlight_close (priv->flashlight);
91 if (flashlight_set_intensity (priv->flashlight, 1) < 0) {
92 flashlight_status_plugin_show_notification (plugin,
93 _("Unable to turn on flashlight."));
94 flashlight_close (priv->flashlight);
98 hildon_button_set_value (HILDON_BUTTON (priv->button), MSG_FLASHLIGHT_ON);
99 hildon_button_set_image (HILDON_BUTTON (priv->button),
100 gtk_image_new_from_icon_name (ICON_FLASHLIGHT_ON, -1));
102 /* check status of controller every 1s */
103 priv->status_timer = g_timeout_add (1000, flashlight_status_plugin_status, plugin);
105 /* cancel status timer */
106 if (priv->status_timer) {
107 g_source_remove (priv->status_timer);
108 priv->status_timer = 0;
111 /* set intensity to 0 */
112 if (flashlight_set_intensity (priv->flashlight, 0) < 0) {
113 flashlight_status_plugin_show_notification (plugin,
114 _("Unable to turn off flashlight."));
118 if (flashlight_close (priv->flashlight) < 0) {
122 hildon_button_set_value (HILDON_BUTTON (priv->button), MSG_FLASHLIGHT_OFF);
123 hildon_button_set_image (HILDON_BUTTON (priv->button),
124 gtk_image_new_from_icon_name (ICON_FLASHLIGHT_OFF, -1));
129 flashlight_status_plugin_on_hal_property_modified (LibHalContext *ctx,
132 dbus_bool_t is_removed,
133 dbus_bool_t is_added)
135 FlashlightPlugin *plugin = libhal_ctx_get_user_data (ctx);
136 FlashlightPluginPrivate *priv = FLASHLIGHT_STATUS_PLUGIN_GET_PRIVATE (plugin);
140 g_return_if_fail (priv);
142 if (strcmp (udi, CAM_COVER_UDI) != 0)
145 if (strcmp (key, CAM_COVER_STATE) != 0)
148 is_open = !libhal_device_get_property_bool (ctx, udi, key, NULL);
152 gtk_widget_show_all (GTK_WIDGET (plugin));
154 /* turn off flashlight if flashlight is enabled */
155 if (flashlight_get_intensity (priv->flashlight, &intensity) == 0) {
157 flashlight_status_plugin_enable (plugin, FALSE);
162 gtk_widget_hide_all (GTK_WIDGET (plugin));
167 flashlight_status_plugin_status (gpointer data)
169 FlashlightPlugin *plugin = data;
170 FlashlightPluginPrivate *priv = FLASHLIGHT_STATUS_PLUGIN_GET_PRIVATE (plugin);
173 if (flashlight_get_status (priv->flashlight, &status) < 0) {
174 flashlight_status_plugin_show_notification (plugin,
175 _("Unable to read status from driver."));
179 /* ops, something is wrong */
181 /* turn off flashlight */
182 flashlight_status_plugin_enable (plugin, FALSE);
184 if (status & FLASHLIGHT_STATUS_SHORT_CIRCUT_FAULT) {
185 flashlight_status_plugin_show_notification (plugin,
186 _("Short-circut fault detected!\nTurning off flashlight."));
187 } else if (status & FLASHLIGHT_STATUS_OVERTEMPERATURE_FAULT) {
188 flashlight_status_plugin_show_notification (plugin,
189 _("Overtemperature fault detected!\nTurning off flashlight."));
190 } else if (status & FLASHLIGHT_STATUS_TIMEOUT_FAULT) {
191 flashlight_status_plugin_show_notification (plugin,
192 _("Timeout fault detected!\nTurning off flashlight."));
193 } else if (status & FLASHLIGHT_STATUS_OVERVOLTAGE_FAULT) {
194 flashlight_status_plugin_show_notification (plugin,
195 _("Overvoltage fault detected!\nTurning off flashlight."));
203 flashlight_status_plugin_on_clicked (HildonButton *button,
206 FlashlightPlugin *plugin = data;
207 FlashlightPluginPrivate *priv = FLASHLIGHT_STATUS_PLUGIN_GET_PRIVATE (plugin);
209 g_return_if_fail (priv);
211 if (!strcmp (hildon_button_get_value (button), MSG_FLASHLIGHT_ON)) {
212 flashlight_status_plugin_enable (plugin, FALSE);
214 flashlight_status_plugin_enable (plugin, TRUE);
219 flashlight_status_plugin_ui (FlashlightPlugin *plugin)
223 g_return_val_if_fail (plugin, NULL);
225 button = hildon_button_new (HILDON_SIZE_FINGER_HEIGHT, HILDON_BUTTON_ARRANGEMENT_VERTICAL);
226 gtk_button_set_alignment (GTK_BUTTON (button), 0.0, 0.5);
227 hildon_button_set_title (HILDON_BUTTON (button), _("Flashlight"));
228 hildon_button_set_value (HILDON_BUTTON (button), MSG_FLASHLIGHT_OFF);
229 hildon_button_set_image (HILDON_BUTTON (button),
230 gtk_image_new_from_icon_name (ICON_FLASHLIGHT_OFF, -1));
231 hildon_button_set_image_position (HILDON_BUTTON (button), GTK_POS_LEFT);
233 g_signal_connect (button, "clicked",
234 G_CALLBACK (flashlight_status_plugin_on_clicked), plugin);
240 flashlight_status_plugin_class_init (FlashlightPluginClass *class)
242 GObjectClass *object_class = G_OBJECT_CLASS (class);
244 object_class->finalize = flashlight_status_plugin_finalize;
246 g_type_class_add_private (class, sizeof (FlashlightPluginPrivate));
250 flashlight_status_plugin_class_finalize (FlashlightPluginClass *class)
255 flashlight_status_plugin_init (FlashlightPlugin *plugin)
257 FlashlightPluginPrivate *priv = FLASHLIGHT_STATUS_PLUGIN_GET_PRIVATE (plugin);
258 DBusConnection *dbus_connection;
261 /* initialize dbus */
262 dbus_error_init (&error);
263 dbus_connection = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
264 if (dbus_error_is_set (&error)) {
265 g_critical ("flashlight_status_plugin_init: Could not get the system DBus connection, %s",
267 dbus_error_free (&error);
271 /* initialize flashlight */
272 if (flashlight_init (&priv->flashlight) < 0) {
273 g_critical ("flashlight_status_plugin_init: Unable to create Flashlight context\n");
278 priv->hal = libhal_ctx_new ();
280 g_critical ("flashlight_status_plugin_init: Unable to create HAL context\n");
284 libhal_ctx_set_dbus_connection (priv->hal, dbus_connection);
285 libhal_ctx_set_user_data (priv->hal, plugin);
286 libhal_ctx_set_device_property_modified (priv->hal,
287 flashlight_status_plugin_on_hal_property_modified);
289 if (!libhal_ctx_init (priv->hal, &error)) {
290 if (dbus_error_is_set (&error)) {
291 g_critical ("Could not initialize the HAL context, %s",
293 dbus_error_free (&error);
295 g_critical ("Could not initialize the HAL context, "
296 "no error, is hald running?");
298 libhal_ctx_set_user_data (priv->hal, NULL);
299 libhal_ctx_free (priv->hal);
303 libhal_device_add_property_watch (priv->hal, CAM_COVER_UDI, NULL);
305 /* create plugin ui */
306 priv->button = flashlight_status_plugin_ui (plugin);
307 gtk_container_add (GTK_CONTAINER (plugin), priv->button);
309 /* show widget if camera cover is open */
310 if ( !libhal_device_get_property_bool (priv->hal, CAM_COVER_UDI, CAM_COVER_STATE, NULL))
311 gtk_widget_show_all (GTK_WIDGET (plugin));
316 flashlight_status_plugin_finalize (GObject *object)
318 FlashlightPlugin *plugin = FLASHLIGHT_STATUS_PLUGIN (object);
319 FlashlightPluginPrivate *priv = FLASHLIGHT_STATUS_PLUGIN_GET_PRIVATE (plugin);
321 g_return_if_fail (priv);
323 /* deinitialize hal */
325 libhal_device_remove_property_watch (priv->hal, CAM_COVER_UDI, NULL);
326 libhal_ctx_set_user_data (priv->hal, NULL);
327 libhal_ctx_shutdown (priv->hal, NULL);
328 libhal_ctx_free (priv->hal);
331 /* cancel status timer */
332 if (priv->status_timer) {
333 g_source_remove (priv->status_timer);
336 /* deinitialize flashlight */
337 if (priv->flashlight) {
338 flashlight_deinit (priv->flashlight);
341 G_OBJECT_CLASS (flashlight_status_plugin_parent_class)->finalize (object);