Lots of asserts in the code.
[speedometer] / util.c
diff --git a/util.c b/util.c
index d5a6df6..3c90f9f 100644 (file)
--- a/util.c
+++ b/util.c
 
 #include <location/location-gps-device.h>
 #include <location/location-gpsd-control.h>
+#include <gconf/gconf-client.h>
 
 #include "util.h"
 #include "appdata.h"
+#include "callbacks.h"
+#include "ui.h"
+
+#define GCONF_KEY "/apps/Maemo/speedometer/disclaimer"
+
+static LocationGPSDevice *device = NULL;
+static LocationGPSDControl *control = NULL;
 
 void start_gps(AppData* appdata) {
+#ifdef __arm__
+       g_assert(appdata);
+       if(!device) {
+               device = g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL);
+               g_signal_connect(device, "changed", G_CALLBACK(location_changed), appdata);
+       }
+       control = location_gpsd_control_get_default();
+       location_gpsd_control_request_status(control);
+       if(control->can_control) {
+               location_gpsd_control_start(control);
+       }
+#endif // __arm__
+}
 
+void stop_gps(AppData* appdata) {
 #ifdef __arm__
-       // gps device
-       LocationGPSDevice *device;
-       device = g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL);
+       g_assert(appdata);
+       control = location_gpsd_control_get_default();
+       location_gpsd_control_request_status(control);
+       if(control->can_control) {
+               location_gpsd_control_stop(control);
+       }
+#endif // __arm__
+}
 
-       g_signal_connect(device, "changed", G_CALLBACK(location_changed), appdata);
+void interpret_speed_from_gps(AppData* appdata, gdouble speed) {
+       g_assert(appdata);
 
-       LocationGPSDControl *control;
+       // if speed is below one then it's zero
+       if(speed < 1) {
+               set_nth_digit(appdata, 0, 0);
+               set_nth_digit(appdata, 1, 0);
+               set_nth_digit(appdata, 2, 0);
+               return;
+       }
 
-       control = location_gpsd_control_get_default();
-       location_gpsd_control_start(control);
-#endif // __arm__
+       // speed => 1
+       // first let's convert the number to string
+       gchar* cspeed = g_malloc(30); // alloc
+       g_sprintf(cspeed, "%f", speed);
 
+       // split the string using comma as delimiter
+       gchar** splitted = g_strsplit(cspeed, ",", 2); // alloc
+
+       gchar* ckm = splitted[0]; // contains the km/h part e.g 123 assuming speed was 123,034510
+       gchar* cm = splitted[1]; // contains the m/h part e.g 034510 assuming speed was 123,034510
+
+       g_print("Original speed %c, splitted speed %c and %c\n", cspeed, ckm, cm);
+
+       // we need to pad km part in order to ensure it is *atleast* 3 digits long
+       gchar* padding = "00";
+       gchar* padded = g_strconcat(padding, cm, NULL); // alloc
+
+       g_print("Original speed %c, padded speed %c (km) and %c (m)\n", cspeed, padded, cm);
+
+
+       guint i = 2;
+       guint pspeedl = strlen(padded);
+
+       while(i+1) {
+               guint value = g_ascii_digit_value(padded[pspeedl]);
+               set_nth_digit(appdata, i, value);
+               i--;
+       }
+       repaint_all_digits(appdata);
+
+       g_free(padded);
+       g_free(cspeed);
+       g_strfreev(splitted);
 }
 
-void stop_gps(AppData* appdata) {
+static show_dialog() {
+       GtkWidget *dialog = gtk_message_dialog_new(
+                       NULL,
+                       GTK_DIALOG_MODAL,
+                       GTK_MESSAGE_INFO,
+                       GTK_BUTTONS_OK,
+                       "This program is licensed under GNU General Public License, "
+                       "which means (among other things) that you don't have to pay "
+                       "a dime for it. "
+                       "If you think, however, that this software is worth it, you "
+                       "can always drop me a postcard.\n\n"
+                       "Wellu Mäkinen\n"
+                       "PO BOX\n"
+                       "33580 Tampere\n"
+                       "FINLAND");
+       gtk_dialog_run(GTK_DIALOG(dialog));
+       gtk_widget_destroy(dialog);
+}
+
+void show_cardware_dialog() {
+       GConfClient* client = gconf_client_get_default();
+       g_assert(GCONF_IS_CLIENT(client));
+
+       GConfValue* gcvalue = NULL;
+       gcvalue = gconf_client_get_without_default(client, GCONF_KEY, NULL);
 
+       if(gcvalue == NULL) {
+               g_print("GConf key not found so show dialog.");
+               show_dialog();
+               gconf_client_set_bool(client, GCONF_KEY, TRUE, NULL);
+       }
+       g_object_unref(client);
 }