Added a GSM monitoring applet (very basic, for the Openmoko Freerunner)

Makefile

@@ -37,6 +37,7 @@ dist:
 		$(PACKAGE)-$(VERSION)/src/applets/cpufreq.c \
 		$(PACKAGE)-$(VERSION)/src/applets/desktop.c \
 		$(PACKAGE)-$(VERSION)/src/applets/gps.c \
+		$(PACKAGE)-$(VERSION)/src/applets/gsm.c \
 		$(PACKAGE)-$(VERSION)/src/applets/lock.c \
 		$(PACKAGE)-$(VERSION)/src/applets/logout.c \
 		$(PACKAGE)-$(VERSION)/src/applets/main.c \

src/applets/Makefile

@@ -1,4 +1,4 @@
-TARGETS	= battery.so bluetooth.so clock.so cpu.so cpufreq.so desktop.so gps.so lock.so logout.so main.so memory.so pager.so systray.so tasks.so volume.so
+TARGETS	= battery.so bluetooth.so clock.so cpu.so cpufreq.so desktop.so gps.so gsm.so lock.so logout.so main.so memory.so pager.so systray.so tasks.so volume.so
 PREFIX	= /usr/local
 DESTDIR	= 
 LIBDIR	= $(PREFIX)/lib
@@ -67,6 +67,13 @@ gps_LDFLAGS = $(LDFLAGSF) $(LDFLAGS)
 gps.so: $(gps_OBJS)
 	$(LD) -o gps.so $(gps_OBJS)
 
+gsm_OBJS = gsm.o
+gsm_CFLAGS = $(CPPFLAGSF) $(CPPFLAGS) $(CFLAGSF) $(CFLAGS)
+gsm_LDFLAGS = $(LDFLAGSF) $(LDFLAGS)
+
+gsm.so: $(gsm_OBJS)
+	$(LD) -o gsm.so $(gsm_OBJS)
+
 lock_OBJS = lock.o
 lock_CFLAGS = $(CPPFLAGSF) $(CPPFLAGS) $(CFLAGSF) $(CFLAGS)
 lock_LDFLAGS = $(LDFLAGSF) $(LDFLAGS)
@@ -144,6 +151,9 @@ desktop.o: desktop.c ../../include/Panel.h
 gps.o: gps.c ../../include/Panel.h
 	$(CC) $(gps_CFLAGS) -c gps.c
 
+gsm.o: gsm.c ../../include/Panel.h
+	$(CC) $(gsm_CFLAGS) -c gsm.c
+
 lock.o: lock.c ../../include/Panel.h
 	$(CC) $(lock_CFLAGS) -c lock.c
 
@@ -169,7 +179,7 @@ volume.o: volume.c ../../include/Panel.h
 	$(CC) $(volume_CFLAGS) -c volume.c
 
 clean:
-	$(RM) $(battery_OBJS) $(bluetooth_OBJS) $(clock_OBJS) $(cpu_OBJS) $(cpufreq_OBJS) $(desktop_OBJS) $(gps_OBJS) $(lock_OBJS) $(logout_OBJS) $(main_OBJS) $(memory_OBJS) $(pager_OBJS) $(systray_OBJS) $(tasks_OBJS) $(volume_OBJS)
+	$(RM) $(battery_OBJS) $(bluetooth_OBJS) $(clock_OBJS) $(cpu_OBJS) $(cpufreq_OBJS) $(desktop_OBJS) $(gps_OBJS) $(gsm_OBJS) $(lock_OBJS) $(logout_OBJS) $(main_OBJS) $(memory_OBJS) $(pager_OBJS) $(systray_OBJS) $(tasks_OBJS) $(volume_OBJS)
 
 distclean: clean
 	$(RM) $(TARGETS)
@@ -190,6 +200,8 @@ install: all
 	$(MKDIR) $(DESTDIR)$(LIBDIR)/Panel/applets
 	$(INSTALL) -m 0644 gps.so $(DESTDIR)$(LIBDIR)/Panel/applets/gps.so
 	$(MKDIR) $(DESTDIR)$(LIBDIR)/Panel/applets
+	$(INSTALL) -m 0644 gsm.so $(DESTDIR)$(LIBDIR)/Panel/applets/gsm.so
+	$(MKDIR) $(DESTDIR)$(LIBDIR)/Panel/applets
 	$(INSTALL) -m 0644 lock.so $(DESTDIR)$(LIBDIR)/Panel/applets/lock.so
 	$(MKDIR) $(DESTDIR)$(LIBDIR)/Panel/applets
 	$(INSTALL) -m 0644 logout.so $(DESTDIR)$(LIBDIR)/Panel/applets/logout.so
@@ -214,6 +226,7 @@ uninstall:
 	$(RM) $(DESTDIR)$(LIBDIR)/Panel/applets/cpufreq.so
 	$(RM) $(DESTDIR)$(LIBDIR)/Panel/applets/desktop.so
 	$(RM) $(DESTDIR)$(LIBDIR)/Panel/applets/gps.so
+	$(RM) $(DESTDIR)$(LIBDIR)/Panel/applets/gsm.so
 	$(RM) $(DESTDIR)$(LIBDIR)/Panel/applets/lock.so
 	$(RM) $(DESTDIR)$(LIBDIR)/Panel/applets/logout.so
 	$(RM) $(DESTDIR)$(LIBDIR)/Panel/applets/main.so

src/applets/gsm.c

@@ -0,0 +1,160 @@
+/* $Id$ */
+/* Copyright (c) 2010 Pierre Pronchery <khorben@defora.org> */
+/* This file is part of DeforaOS Desktop Panel */
+/* This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY 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/>. */
+
+
+
+#if defined(__linux__)
+# include <fcntl.h>
+# include <unistd.h>
+# include <string.h>
+# include <errno.h>
+#endif
+#include <stdlib.h>
+#include <System.h>
+#include "Panel.h"
+
+
+/* GSM */
+/* private */
+/* types */
+typedef struct _GSM
+{
+	PanelAppletHelper * helper;
+	GtkWidget * image;
+	guint timeout;
+#if defined(__linux__)
+	int fd;
+#endif
+} GSM;
+
+
+/* prototypes */
+static GtkWidget * _gsm_init(PanelApplet * applet);
+static void _gsm_destroy(PanelApplet * applet);
+
+static gboolean _gsm_get(GSM * gsm);
+static void _gsm_set(GSM * gsm, gboolean on);
+
+/* callbacks */
+static gboolean _on_timeout(gpointer data);
+
+
+/* public */
+/* variables */
+PanelApplet applet =
+{
+	NULL,
+	_gsm_init,
+	_gsm_destroy,
+	PANEL_APPLET_POSITION_END,
+	FALSE,
+	TRUE,
+	NULL
+};
+
+
+/* private */
+/* functions */
+/* gsm_init */
+static GtkWidget * _gsm_init(PanelApplet * applet)
+{
+	GSM * gsm;
+
+	if((gsm = malloc(sizeof(*gsm))) == NULL)
+		return NULL;
+	applet->priv = gsm;
+	gsm->helper = applet->helper;
+	gsm->timeout = 0;
+#if defined(__linux__)
+	gsm->fd = -1;
+#endif
+	/* XXX find a better image */
+	gsm->image = gtk_image_new_from_icon_name("network-wireless",
+			applet->helper->icon_size);
+	gsm->timeout = g_timeout_add(1000, _on_timeout, gsm);
+	_on_timeout(gsm);
+	return gsm->image;
+}
+
+
+/* gsm_destroy */
+static void _gsm_destroy(PanelApplet * applet)
+{
+	GSM * gsm = applet->priv;
+
+	if(gsm->timeout > 0)
+		g_source_remove(gsm->timeout);
+#if defined(__linux__)
+	if(gsm->fd != -1)
+		close(gsm->fd);
+#endif
+	free(gsm);
+}
+
+
+/* gsm_set */
+static void _gsm_set(GSM * gsm, gboolean on)
+{
+	if(on == TRUE)
+		gtk_widget_show(gsm->image);
+	else
+		gtk_widget_hide(gsm->image);
+}
+
+
+/* callbacks */
+/* on_timeout */
+#if defined(__linux__)
+static gboolean _gsm_get(GSM * gsm)
+{
+	/* XXX currently hard-coded for the Openmoko Freerunner */
+	const char dev[] = "/sys/bus/platform/devices/neo1973-pm-gsm.0/"
+		"power_on";
+	char on;
+
+	if(gsm->fd == -1 && (gsm->fd = open(dev, O_RDONLY)) == -1)
+	{
+		error_set("%s: %s", dev, strerror(errno));
+		return FALSE;
+	}
+	errno = ENODATA; /* in case the pseudo-file is empty */
+	if(lseek(gsm->fd, 0, SEEK_SET) != 0
+			|| read(gsm->fd, &on, sizeof(on)) != 1)
+	{
+		error_set("%s: %s", dev, strerror(errno));
+		close(gsm->fd);
+		gsm->fd = -1;
+		return FALSE;
+	}
+	return (on == '1') ? TRUE : FALSE;
+}
+#else
+static gboolean _gsm_get(GSM * gsm)
+{
+	/* FIXME not supported */
+	return FALSE;
+}
+#endif
+
+
+/* callbacks */
+/* on_timeout */
+static gboolean _on_timeout(gpointer data)
+{
+	GSM * gsm = data;
+
+	_gsm_set(gsm, _gsm_get(gsm));
+	return TRUE;
+}

src/applets/project.conf

@@ -1,4 +1,4 @@
-targets=battery,bluetooth,clock,cpu,cpufreq,desktop,gps,lock,logout,main,memory,pager,systray,tasks,volume
+targets=battery,bluetooth,clock,cpu,cpufreq,desktop,gps,gsm,lock,logout,main,memory,pager,systray,tasks,volume
 cppflags_force=-I $(PREFIX)/include -I ../../include
 #cppflags=-D EMBEDDED
 cflags_force=-W `pkg-config --cflags gtk+-2.0` -fPIC
@@ -61,6 +61,14 @@ install=$(LIBDIR)/Panel/applets
 [gps.c]
 depends=../../include/Panel.h
 
+[gsm]
+type=plugin
+sources=gsm.c
+install=$(LIBDIR)/Panel/applets
+
+[gsm.c]
+depends=../../include/Panel.h
+
 [lock]
 type=plugin
 sources=lock.c

src/panel.c

@@ -151,11 +151,12 @@ static gboolean _on_idle(gpointer data)
 	/* FIXME load all plugins, a configuration file or ask the user */
 #ifndef EMBEDDED
 	const char * plugins[] = { "volume", "systray", "battery", "bluetooth",
-		"clock", "memory", "cpufreq", "cpu", "desktop", "gps", "lock",
-		"logout", "main", "pager", "tasks", NULL };
+		"clock", "memory", "cpufreq", "cpu", "desktop", "gps", "gsm",
+		"lock", "logout", "main", "pager", "tasks", NULL };
 #else
 	const char * plugins[] = { "volume", "systray", "battery", "bluetooth",
-		"clock", "cpufreq", "desktop", "gps", "main", "tasks", NULL };
+		"clock", "cpufreq", "desktop", "gps", "gsm", "main", "tasks",
+		NULL };
 #endif
 	size_t i;