--- /dev/null
+/*
+ * Copyright (C) 2012 Adam Boggs <boggs@aircrafter.org>
+ *
+ * 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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/>.
+ */
+
+/* TODO:
+ * If gpsd connection fails, try to connect again periodically.
+ * If gps stops sending data there should be an indication that it's stale.
+ */
+
+#define _XOPEN_SOURCE
+#include <config.h>
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <time.h>
+#include <string.h>
+#include <glib/gstdio.h>
+#include <gtk/gtk.h>
+#include <gio/gio.h>
+#include <math.h>
+
+#include <grits.h>
+#include <gps.h>
+
+#include "gps-plugin.h"
+#include "level2.h"
+#include "../aweather-location.h"
+
+/* interval to update map with new gps data in seconds. */
+#define GPS_UPDATE_INTERVAL (2)
+
+/* Filename and search path to use for gps marker, should be configurable */
+#define GPS_MARKER_ICON_PATH ".:" PKGDATADIR
+#define GPS_MARKER_ICON "arrow.png"
+
+/* number of track points per group and number of groups to maintain */
+#define GPS_TRACK_POINTS (256)
+#define GPS_TRACK_GROUPS (16)
+#define GPS_TRACK_POINTS_FACTOR (1.5)
+
+/* interval to update log file in seconds (default value for slider) */
+#define GPS_LOG_DEFAULT_UPDATE_INTERVAL (30)
+#define GPS_LOG_EXT "csv"
+
+/* For updating the status bar conveniently */
+#define GPS_STATUSBAR_CONTEXT "GPS"
+
+#if 0
+#define GPS_STATUS(gps, format, args...) \
+ do { \
+ gchar *buf = g_strdup_printf(format, ##args); \
+ gtk_statusbar_push(GTK_STATUSBAR(gps->status_bar), \
+ gtk_statusbar_get_context_id( \
+ GTK_STATUSBAR(gps->status_bar), \
+ GPS_STATUSBAR_CONTEXT), \
+ buf); \
+ } while (0)
+#endif
+
+#define GPS_STATUS(gps, format, args...) \
+ do { \
+ gchar *buf = g_strdup_printf(format, ##args); \
+ g_debug("STATUS: %s", buf); \
+ } while (0)
+
+
+/********************
+ * Helper functions *
+ ********************/
+
+/* Find a readable file in a colon delimeted path */
+static gchar *find_path(const gchar *path, const gchar *filename)
+{
+ gchar *end_ptr, *fullpath;
+
+ end_ptr = (gchar *)path;
+
+ /* find first : */
+ while (*end_ptr != ':' && *end_ptr != '\0')
+ end_ptr++;
+ fullpath = g_strdup_printf("%.*s/%s", (int)(end_ptr-path), path,
+ filename);
+ g_debug("GritsPluginGps: find_path - searching %s", fullpath);
+ if (access(fullpath, R_OK) == 0) {
+ g_debug("GritsPluginGps: find_path - found %s", fullpath);
+ return fullpath; /* caller frees */
+ }
+
+ g_free(fullpath);
+ /* recurse */
+ if (*end_ptr == '\0') {
+ return NULL;
+ } else {
+ return find_path(end_ptr + 1, filename);
+ }
+}
+
+
+/********************
+ * GPS Status Table *
+ ********************/
+
+static gchar *gps_get_status(struct gps_data_t *gps_data)
+{
+ gchar *status_color;
+ gchar *status_text;
+
+ switch (gps_data->fix.mode) {
+ case MODE_NOT_SEEN:
+ status_color = "red";
+ status_text = "No Signal";
+ break;
+ case MODE_NO_FIX:
+ status_color = "red";
+ status_text = "No Fix";
+ break;
+ case MODE_2D:
+ status_color = "yellow";
+ status_text = "2D Mode";
+ break;
+ case MODE_3D:
+ status_color = "green";
+ status_text = "3D Mode";
+ break;
+ default:
+ status_color = "black";
+ status_text = "Unknown";
+ break;
+ }
+ return g_strdup_printf("<span foreground=\"%s\">%s</span>",
+ status_color, status_text);
+}
+
+#if 0
+static gchar *gps_get_online(struct gps_data_t *gps_data)
+{
+ gchar *status_str;
+ gchar *online_str;
+
+ if (gps_data->online == -1.0) {
+ online_str = "Offline";
+ } else {
+ online_str = "Online";
+ }
+
+ switch (gps_data->status) {
+ case 0:
+ status_str = "No Fix";
+ break;
+ case 1:
+ status_str = "Fix Acquired";
+ break;
+ case 2:
+ status_str = "DGPS Fix";
+ break;
+ default:
+ status_str = "Unknown Status";
+ break;
+ }
+
+ return g_strdup_printf("%lf,%s,%s", gps_data->online, online_str, status_str);
+}
+#endif
+
+static gchar *gps_get_latitude(struct gps_data_t *gps_data)
+{
+ return g_strdup_printf("%3.4f", gps_data->fix.latitude);
+}
+
+static gchar *gps_get_longitude(struct gps_data_t *gps_data)
+{
+ return g_strdup_printf("%3.4f", gps_data->fix.longitude);
+}
+
+static gchar *gps_get_elevation(struct gps_data_t *gps_data)
+{
+ /* XXX Make units (m/ft) settable */
+ return g_strdup_printf("%.1lf %s",
+ (gps_data->fix.altitude * METERS_TO_FEET), "ft");
+}
+
+static gchar *gps_get_heading(struct gps_data_t *gps_data)
+{
+ /* XXX Make units (m/ft) settable */
+ return g_strdup_printf("%03.0lf", gps_data->fix.track);
+}
+
+static gchar *gps_get_speed(struct gps_data_t *gps_data)
+{
+ /* XXX Make units (m/ft) settable */
+ return g_strdup_printf("%1.1f %s",
+ (gps_data->fix.speed*3600.0*METERS_TO_FEET/5280.0), "mph");
+}
+
+struct {
+ const gchar *label;
+ const gchar *initial_val;
+ gchar *(*get_data)(struct gps_data_t *);
+ guint font_size;
+ GtkWidget *label_widget;
+ GtkWidget *value_widget;
+} gps_table[] = {
+ {"Status:", "No Data", gps_get_status, 14, NULL, NULL},
+// {"Online:", "No Data", gps_get_online, 14, NULL, NULL},
+ {"Latitude:", "No Data", gps_get_latitude, 14, NULL, NULL},
+ {"Longitude:", "No Data", gps_get_longitude, 14, NULL, NULL},
+ {"Elevation:", "No Data", gps_get_elevation, 14, NULL, NULL},
+ {"Heading:", "No Data", gps_get_heading, 14, NULL, NULL},
+ {"Speed:", "No Data", gps_get_speed, 14, NULL, NULL},
+};
+
+
+/******************
+ * Track handling *
+ ******************/
+
+static void gps_track_init(GpsTrack *track)
+{
+ /* Save a spot at the end for the NULL termination */
+ track->points = (gpointer)g_new0(double*, GPS_TRACK_GROUPS + 1);
+ track->cur_point = 0;
+ track->cur_group = 0;
+ track->num_points = 1; /* starts at 1 so realloc logic works */
+ track->line = NULL;
+}
+
+static void gps_track_clear(GpsTrack *track)
+{
+ gint pi;
+ for (pi = 0; pi < GPS_TRACK_GROUPS; pi++) {
+ if (track->points[pi] != NULL) {
+ g_free(track->points[pi]);
+ track->points[pi] = NULL;
+ }
+ }
+ track->cur_point = 0;
+ track->cur_group = 0;
+ track->num_points = 1; /* starts at 1 so realloc logic works */
+}
+
+static void gps_track_free(GpsTrack *track)
+{
+ gps_track_clear(track);
+ g_free(track->points);
+}
+
+/* add a new track group (points in a track group are connected, and
+ * separated from points in other track groups). */
+static void gps_track_group_incr(GpsTrack *track)
+{
+ gdouble (**points)[3] = track->points; /* for simplicity */
+
+ /* Just return if they increment it again before any points have
+ * been added.
+ */
+ if (points[track->cur_group] == NULL) {
+ return;
+ }
+
+ g_debug("GritsPluginGps: track_group_incr - track group %u->%u.",
+ track->cur_group, track->cur_group + 1);
+
+ track->cur_group++;
+ track->cur_point = 0;
+ track->num_points = 1; /* starts at 1 so realloc logic works */
+
+ if (track->cur_group >= GPS_TRACK_GROUPS) {
+ g_debug("GritsPluginGps: track_group_incr - track group %u "
+ "is at max %u, shifting groups",
+ track->cur_group, GPS_TRACK_GROUPS);
+
+ /* Free the oldest one which falls off the end */
+ g_free(points[0]);
+
+ /* shift the rest down, last one should be NULL already */
+ /* note we alloc GPS_TRACK_GROUPS+1 */
+ for (int pi = 0; pi < GPS_TRACK_GROUPS; pi++) {
+ points[pi] = points[pi+1];
+ }
+
+ /* always write into the last group */
+ track->cur_group = GPS_TRACK_GROUPS - 1;
+ }
+}
+
+static void gps_track_add_point(GpsTrack *track,
+ gdouble lat, gdouble lon, gdouble elevation)
+{
+ gdouble (**points)[3] = track->points; /* for simplicity */
+
+ g_debug("GritsPluginGps: track_add_point");
+
+ g_assert(track->cur_group < GPS_TRACK_GROUPS &&
+ (track->cur_point <= track->num_points));
+
+ /* resize/allocate the point group if the current one is full */
+ if (track->cur_point >= track->num_points - 1) {
+ guint new_size = track->num_points == 1 ?
+ GPS_TRACK_POINTS :
+ track->num_points * GPS_TRACK_POINTS_FACTOR;
+ g_debug("GritsPluginGps: track_add_point - reallocating points "
+ "array from %u points to %u points.\n",
+ track->num_points, new_size);
+ points[track->cur_group] = (gpointer)g_renew(gdouble,
+ points[track->cur_group], 3*(new_size+1));
+ track->num_points = new_size;
+ }
+
+ g_assert(points[track->cur_group] != NULL);
+
+ /* Add the coordinate */
+ lle2xyz(lat, lon, elevation,
+ &points[track->cur_group][track->cur_point][0],
+ &points[track->cur_group][track->cur_point][1],
+ &points[track->cur_group][track->cur_point][2]);
+
+ track->cur_point++;
+
+ /* make sure last point is always 0s so the line drawing stops. */
+ points[track->cur_group][track->cur_point][0] = 0.0;
+ points[track->cur_group][track->cur_point][1] = 0.0;
+ points[track->cur_group][track->cur_point][2] = 0.0;
+}
+
+
+/*****************
+ * Track Logging *
+ *****************/
+
+static gchar *gps_get_date_string(double gps_time)
+{
+ static gchar buf[256];
+ time_t int_time = (time_t)gps_time;
+ struct tm tm_time;
+
+ gmtime_r(&int_time, &tm_time);
+
+ snprintf(buf, sizeof(buf), "%04d-%02d-%02d",
+ tm_time.tm_year+1900, tm_time.tm_mon+1, tm_time.tm_mday);
+
+ return buf;
+}
+
+static gchar *gps_get_time_string(time_t gps_time)
+{
+ static gchar buf[256];
+ time_t int_time = (time_t)gps_time;
+ struct tm tm_time;
+
+ gmtime_r(&int_time, &tm_time);
+
+ snprintf(buf, sizeof(buf), "%02d:%02d:%02dZ",
+ tm_time.tm_hour, tm_time.tm_min, tm_time.tm_sec);
+
+ return buf;
+}
+
+static gboolean gps_write_log(gpointer data)
+{
+ GritsPluginGps *gps = (GritsPluginGps *)data;
+ struct gps_data_t *gps_data = &gps->gps_data;
+ gchar buf[256];
+ gchar filename[256];
+ gint fd;
+ gboolean new_file = FALSE;
+
+ if (gps_data == NULL) {
+ g_warning("Skipped write to GPS log file: "
+ "can not get GPS coordinates.");
+ GPS_STATUS(gps, "Skipped write to GPS log file: "
+ "can not get GPS coordinates.");
+ return TRUE;
+ }
+
+ /* get filename from text entry box. If empty, generate a name from
+ * the date and time and set it. */
+ if (strlen(gtk_entry_get_text(
+ GTK_ENTRY(gps->ui.gps_log_filename_entry))) == 0) {
+ snprintf(filename, sizeof(filename),
+ "%sT%s.%s",
+ gps_get_date_string(gps->gps_data.fix.time),
+ gps_get_time_string(gps->gps_data.fix.time),
+ GPS_LOG_EXT);
+ gtk_entry_set_text(GTK_ENTRY(gps->ui.gps_log_filename_entry),
+ filename);
+ }
+
+ strncpy(filename,
+ gtk_entry_get_text(GTK_ENTRY(gps->ui.gps_log_filename_entry)),
+ sizeof(filename));
+
+ if (!g_file_test(filename, G_FILE_TEST_EXISTS)) {
+ new_file = TRUE;
+ }
+
+ if ((fd = open(filename, O_CREAT|O_APPEND|O_WRONLY, 0644)) == -1) {
+ g_warning("Error opening log file %s: %s",
+ filename, strerror(errno));
+ return FALSE;
+ }
+
+ if (new_file) {
+ /* write header and reset record counter */
+ snprintf(buf, sizeof(buf),
+ "No,Date,Time,Lat,Lon,Ele,Head,Speed,RTR\n");
+ if (write(fd, buf, strlen(buf)) == -1) {
+ g_warning("Error writing header to log file %s: %s",
+ filename, strerror(errno));
+ }
+ gps->ui.gps_log_number = 1;
+ }
+
+ /* Write log entry. Make sure this matches the header */
+ /* "No,Date,Time,Lat,Lon,Ele,Head,Speed,Fix,RTR\n" */
+ /* RTR values: T=time, B=button push, S=speed, D=distance */
+ snprintf(buf, sizeof(buf), "%d,%s,%s,%lf,%lf,%lf,%lf,%lf,%c\n",
+ gps->ui.gps_log_number++,
+ gps_get_date_string(gps->gps_data.fix.time),
+ gps_get_time_string(gps->gps_data.fix.time),
+ //gps_data->fix.time,
+ gps_data->fix.latitude,
+ gps_data->fix.longitude,
+ gps_data->fix.altitude * METERS_TO_FEET,
+ gps_data->fix.track,
+ gps_data->fix.speed * METERS_TO_FEET,
+ 'T'); /* position due to timer expired */
+
+ if (write(fd, buf, strlen(buf)) == -1) {
+ g_warning("Could not write log number %d to log file %s: %s",
+ gps->ui.gps_log_number-1, filename, strerror(errno));
+ }
+ close(fd);
+
+ GPS_STATUS(gps, "Updated GPS log file %s.", filename);
+
+ /* reschedule */
+ return TRUE;
+}
+
+
+/****************
+ * Main drawing *
+ ****************/
+
+static gboolean gps_data_is_valid(struct gps_data_t *gps_data)
+{
+ if (gps_data != NULL && gps_data->online != -1.0 &&
+ gps_data->fix.mode >= MODE_2D &&
+ gps_data->status > STATUS_NO_FIX) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static void gps_update_status(GritsPluginGps *gps)
+{
+ struct gps_data_t *gps_data = &gps->gps_data;
+
+ /* gps table update */
+ gint i;
+ gchar *str;
+ for (i = 0; i < G_N_ELEMENTS(gps_table); i++) {
+ gtk_label_set_markup(GTK_LABEL(gps_table[i].value_widget),
+ (str = gps_table[i].get_data(gps_data)));
+ g_free(str);
+ }
+}
+
+/* external interface to update UI from latest GPS data. */
+gboolean gps_redraw_all(gpointer data)
+{
+ GritsPluginGps *gps = (GritsPluginGps *)data;
+ g_assert(gps);
+
+ struct gps_data_t *gps_data = &gps->gps_data;
+
+ g_debug("GritsPluginGps: redraw_all");
+
+ g_assert(gps_data);
+ if (!gps_data_is_valid(gps_data)) {
+ g_debug("GritsPluginGps: redraw_all - gps_data is not valid.");
+ /* XXX Change marker to indicate data is not valid */
+ return TRUE;
+ }
+
+ /* update position labels */
+ gps_update_status(gps);
+
+ /* Update track and marker position */
+ if (gps_data_is_valid(gps_data) && gps->track.active) {
+ g_debug("GritsPluginGps: redraw_all - updating track group %u "
+ "point %u at lat = %f, long = %f, track = %f",
+ gps->track.cur_group,
+ gps->track.cur_point,
+ gps_data->fix.latitude,
+ gps_data->fix.longitude,
+ gps_data->fix.track);
+
+ gps_track_add_point(&gps->track,
+ gps_data->fix.latitude, gps_data->fix.longitude, 0.0);
+
+ if (gps->track.line) {
+ grits_viewer_remove(gps->viewer,
+ GRITS_OBJECT(gps->track.line));
+ gps->track.line = NULL;
+ }
+
+ gps->track.line = grits_line_new(gps->track.points);
+ gps->track.line->color[0] = 1.0;
+ gps->track.line->color[1] = 0;
+ gps->track.line->color[2] = 0.1;
+ gps->track.line->color[3] = 1.0;
+ gps->track.line->width = 3;
+
+ grits_viewer_add(gps->viewer, GRITS_OBJECT(gps->track.line),
+ GRITS_LEVEL_OVERLAY, FALSE);
+ grits_object_queue_draw(GRITS_OBJECT(gps->track.line));
+ }
+
+ if (gps_data_is_valid(gps_data)) {
+ if (gps->marker) {
+ grits_viewer_remove(gps->viewer,
+ GRITS_OBJECT(gps->marker));
+ gps->marker = NULL;
+ }
+
+ gchar *path = find_path(GPS_MARKER_ICON_PATH, GPS_MARKER_ICON);
+ if (path) {
+ gps->marker = grits_marker_icon_new("GPS", path,
+ gps_data->fix.track, TRUE, GRITS_MARKER_DMASK_ICON);
+ g_free(path);
+ } else {
+ /* if icon not found just use a point */
+ g_warning("Could not find GPS marker icon %s in path %s.",
+ GPS_MARKER_ICON, GPS_MARKER_ICON_PATH);
+ gps->marker = grits_marker_icon_new("GPS", NULL,
+ gps_data->fix.track, FALSE,
+ GRITS_MARKER_DMASK_POINT |
+ GRITS_MARKER_DMASK_LABEL);
+ }
+
+ GRITS_OBJECT(gps->marker)->center.lat = gps_data->fix.latitude;
+ GRITS_OBJECT(gps->marker)->center.lon = gps_data->fix.longitude;
+ GRITS_OBJECT(gps->marker)->center.elev = 0.0;
+ GRITS_OBJECT(gps->marker)->lod = EARTH_R * 5;
+ GRITS_MARKER(gps->marker)->ortho = FALSE;
+
+ grits_viewer_add(gps->viewer, GRITS_OBJECT(gps->marker),
+ GRITS_LEVEL_OVERLAY+1, FALSE);
+ grits_object_queue_draw(GRITS_OBJECT(gps->marker));
+ }
+
+ if (gps->follow_gps && gps_data_is_valid(gps_data)) {
+ /* Center map at current GPS position. */
+ g_debug("GritsPluginGps: redraw_all - centering map at "
+ "lat = %f, long = %f, track = %f",
+ gps_data->fix.latitude,
+ gps_data->fix.longitude,
+ gps_data->fix.track);
+
+ double lat, lon, elev;
+ grits_viewer_get_location(gps->viewer, &lat, &lon, &elev);
+ grits_viewer_set_location(gps->viewer, gps_data->fix.latitude,
+ gps_data->fix.longitude, elev);
+ //grits_viewer_set_rotation(gps->viewer, 0, 0, 0);
+ }
+
+ /* reschedule */
+ return TRUE;
+}
+
+
+/***************
+ * Config Area *
+ ***************/
+
+/* GPS Data Frame */
+static void gps_init_status_info(GritsPluginGps *gps, GtkWidget *gbox)
+{
+ gps->ui.gps_status_frame = gtk_frame_new("<b>GPS Data</b>");
+ GtkWidget *label = gtk_frame_get_label_widget(
+ GTK_FRAME(gps->ui.gps_status_frame));
+ gtk_label_set_use_markup(GTK_LABEL(label), TRUE);
+ gtk_frame_set_shadow_type(GTK_FRAME(gps->ui.gps_status_frame),
+ GTK_SHADOW_NONE);
+ gps->ui.gps_status_table = gtk_table_new(5, 2, TRUE);
+ gtk_container_add(GTK_CONTAINER(gps->ui.gps_status_frame),
+ gps->ui.gps_status_table);
+
+ /* gps data table setup */
+ gint i;
+ for (i = 0; i < G_N_ELEMENTS(gps_table); i++) {
+ gps_table[i].label_widget = gtk_label_new(gps_table[i].label);
+ gtk_label_set_justify(GTK_LABEL(gps_table[i].label_widget),
+ GTK_JUSTIFY_LEFT);
+ gtk_table_attach(GTK_TABLE(gps->ui.gps_status_table),
+ gps_table[i].label_widget,
+ 0, 1, i, i+1, 0, 0, 0, 0);
+ gps_table[i].value_widget = gtk_label_new(gps_table[i].initial_val);
+ gtk_table_attach( GTK_TABLE(gps->ui.gps_status_table),
+ gps_table[i].value_widget, 1, 2, i, i+1, 0, 0, 0, 0);
+
+ PangoFontDescription *font_desc = pango_font_description_new();
+ pango_font_description_set_size(font_desc,
+ gps_table[i].font_size*PANGO_SCALE);
+ gtk_widget_modify_font(gps_table[i].label_widget, font_desc);
+ gtk_widget_modify_font(gps_table[i].value_widget, font_desc);
+ pango_font_description_free(font_desc);
+ }
+ gtk_box_pack_start(GTK_BOX(gbox), gps->ui.gps_status_frame,
+ TRUE, FALSE, 0);
+
+ /* Start UI refresh task, which will reschedule itgps. */
+ gps_redraw_all(gps);
+ gps->gps_update_timeout_id = g_timeout_add(
+ GPS_UPDATE_INTERVAL*1000,
+ gps_redraw_all, gps);
+
+}
+
+/* GPS Control Frame */
+static gboolean on_gps_follow_clicked_event(GtkWidget *widget, gpointer user_data)
+{
+ GritsPluginGps *gps = (GritsPluginGps *)user_data;
+
+ g_debug("GritsPluginGps: follow_clicked_event - button status %d",
+ gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)));
+ if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget))) {
+ gps->follow_gps = TRUE;
+ } else {
+ gps->follow_gps = FALSE;
+ }
+
+ return FALSE;
+}
+
+static gboolean on_gps_track_enable_clicked_event(GtkWidget *widget, gpointer user_data)
+{
+ GritsPluginGps *gps = (GritsPluginGps *)user_data;
+
+ g_debug("GritsPluginGps: track_enable_clicked_event");
+
+ if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget))) {
+ /* start logging trip history */
+ GPS_STATUS(gps, "Enabled GPS track.");
+ gps->track.active = TRUE;
+ } else {
+ /* stop logging trip history */
+ GPS_STATUS(gps, "Disabled GPS track.");
+ gps->track.active = FALSE;
+ /* advance to the next track group, moving everything down if
+ * it's full. */
+ gps_track_group_incr(&gps->track);
+ }
+
+ return FALSE;
+}
+
+static gboolean on_gps_track_clear_clicked_event(GtkWidget *widget, gpointer user_data)
+{
+ GritsPluginGps *gps = (GritsPluginGps *)user_data;
+
+ g_debug("GritsPluginGps: track_clear_clicked_event");
+ GPS_STATUS(gps, "Cleared GPS track.");
+ gps_track_clear(&gps->track);
+
+ return FALSE;
+}
+
+static void gps_init_control_frame(GritsPluginGps *gps, GtkWidget *gbox)
+{
+ /* Control checkboxes */
+ GtkWidget *gps_control_frame = gtk_frame_new("<b>GPS Control</b>");
+ GtkWidget *label = gtk_frame_get_label_widget(
+ GTK_FRAME(gps_control_frame));
+ gtk_label_set_use_markup(GTK_LABEL(label), TRUE);
+ gtk_frame_set_shadow_type(GTK_FRAME(gps_control_frame),
+ GTK_SHADOW_NONE);
+ GtkWidget *cbox = gtk_vbox_new(FALSE, 2);
+ gtk_container_add(GTK_CONTAINER(gps_control_frame), cbox);
+ gtk_box_pack_start(GTK_BOX(gbox), gps_control_frame, FALSE, FALSE, 0);
+
+ gps->ui.gps_follow_checkbox =
+ gtk_check_button_new_with_label("Follow GPS");
+ g_signal_connect(G_OBJECT(gps->ui.gps_follow_checkbox), "clicked",
+ G_CALLBACK(on_gps_follow_clicked_event),
+ (gpointer)gps);
+ gtk_box_pack_start(GTK_BOX(cbox), gps->ui.gps_follow_checkbox,
+ FALSE, FALSE, 0);
+
+ gps->ui.gps_track_checkbox =
+ gtk_check_button_new_with_label("Record Track");
+ g_signal_connect(G_OBJECT(gps->ui.gps_track_checkbox), "clicked",
+ G_CALLBACK(on_gps_track_enable_clicked_event),
+ (gpointer)gps);
+ gtk_box_pack_start(GTK_BOX(cbox), gps->ui.gps_track_checkbox,
+ FALSE, FALSE, 0);
+
+ gps->ui.gps_clear_button = gtk_button_new_with_label("Clear Track");
+ g_signal_connect(G_OBJECT(gps->ui.gps_clear_button), "clicked",
+ G_CALLBACK(on_gps_track_clear_clicked_event),
+ (gpointer)gps);
+ gtk_box_pack_start(GTK_BOX(cbox), gps->ui.gps_clear_button,
+ FALSE, FALSE, 0);
+}
+
+/* Track Log Frame */
+static gboolean on_gps_log_clicked_event(GtkWidget *widget, gpointer user_data)
+{
+ GritsPluginGps *gps = (GritsPluginGps *)user_data;
+
+ g_debug("GritsPluginGps: log_clicked_event");
+
+ if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (widget))) {
+ gps_write_log(gps);
+
+ /* Schedule log file write */
+ gps->ui.gps_log_timeout_id = g_timeout_add(
+ gtk_range_get_value(
+ GTK_RANGE(gps->ui.gps_log_interval_slider))*1000,
+ gps_write_log, gps);
+ } else {
+ /* button unchecked */
+ g_source_remove(gps->ui.gps_log_timeout_id);
+ gps->ui.gps_log_timeout_id = 0;
+ g_debug("GritsPluginGps: log_clicked_event - closed log file.");
+ }
+
+ return FALSE;
+}
+
+static gboolean on_gps_log_interval_changed_event(GtkWidget *widget, gpointer user_data)
+{
+ GritsPluginGps *gps = (GritsPluginGps *)user_data;
+
+ g_assert(gps);
+
+ g_debug("GritsPluginGps: log_interval_changed_event - value = %f",
+ gtk_range_get_value(GTK_RANGE(widget)));
+
+ if (gtk_toggle_button_get_active(
+ GTK_TOGGLE_BUTTON(gps->ui.gps_log_checkbox))) {
+ g_assert(gps->ui.gps_log_timeout_id != 0);
+
+ /* disable old timeout */
+ g_source_remove(gps->ui.gps_log_timeout_id);
+ gps->ui.gps_log_timeout_id = 0;
+
+ /* Schedule new log file write */
+ gps->ui.gps_log_timeout_id = g_timeout_add(
+ gtk_range_get_value(GTK_RANGE(widget))*1000,
+ gps_write_log, gps);
+ gps_write_log(gps);
+ }
+
+ return FALSE;
+}
+
+static void gps_init_track_log_frame(GritsPluginGps *gps, GtkWidget *gbox)
+{
+ /* Track log box with enable checkbox and filename entry */
+ GtkWidget *gps_log_frame = gtk_frame_new("<b>Track Log</b>");
+ GtkWidget *label = gtk_frame_get_label_widget(GTK_FRAME(gps_log_frame));
+ gtk_label_set_use_markup(GTK_LABEL(label), TRUE);
+ gtk_frame_set_shadow_type(GTK_FRAME(gps_log_frame), GTK_SHADOW_NONE);
+ GtkWidget *lbox = gtk_vbox_new(FALSE, 2);
+ gtk_container_add(GTK_CONTAINER(gps_log_frame), lbox);
+ gtk_box_pack_start(GTK_BOX(gbox), gps_log_frame,
+ FALSE, FALSE, 0);
+
+ gps->ui.gps_log_checkbox =
+ gtk_check_button_new_with_label("Log Position to File");
+ g_signal_connect(G_OBJECT(gps->ui.gps_log_checkbox), "clicked",
+ G_CALLBACK(on_gps_log_clicked_event),
+ (gpointer)gps);
+ gtk_box_pack_start(GTK_BOX(lbox), gps->ui.gps_log_checkbox,
+ FALSE, FALSE, 0);
+
+ /* Set up filename entry box */
+ GtkWidget *fbox = gtk_hbox_new(FALSE, 2);
+ GtkWidget *filename_label = gtk_label_new("Filename:");
+ gtk_box_pack_start(GTK_BOX(fbox), filename_label, FALSE, FALSE, 0);
+ gps->ui.gps_log_filename_entry = gtk_entry_new();
+ gtk_box_pack_start(GTK_BOX(fbox), gps->ui.gps_log_filename_entry,
+ TRUE, TRUE, 0);
+ gtk_box_pack_start(GTK_BOX(lbox), fbox, FALSE, FALSE, 0);
+
+ /* set up gps log interval slider */
+ GtkWidget *ubox = gtk_hbox_new(FALSE, 4);
+ GtkWidget *interval_label = gtk_label_new("Update Interval:");
+ gtk_box_pack_start(GTK_BOX(ubox), interval_label, FALSE, FALSE, 0);
+ gps->ui.gps_log_interval_slider =
+ gtk_hscale_new_with_range(1.0, 600.0, 30.0);
+ gtk_range_set_value(GTK_RANGE(gps->ui.gps_log_interval_slider),
+ GPS_LOG_DEFAULT_UPDATE_INTERVAL);
+ g_signal_connect(G_OBJECT(gps->ui.gps_log_interval_slider),
+ "value-changed",
+ G_CALLBACK(on_gps_log_interval_changed_event),
+ (gpointer)gps);
+ gtk_range_set_increments(
+ GTK_RANGE(gps->ui.gps_log_interval_slider),
+ 10.0 /* step */, 30.0 /* page up/down */);
+ gtk_range_set_update_policy(
+ GTK_RANGE(gps->ui.gps_log_interval_slider),
+ GTK_UPDATE_DELAYED);
+ gtk_box_pack_start(GTK_BOX(ubox), gps->ui.gps_log_interval_slider,
+ TRUE, TRUE, 0);
+ gtk_box_pack_start(GTK_BOX(lbox), ubox, FALSE, FALSE, 0);
+}
+
+
+/*******************
+ * GPSD interfaces *
+ *******************/
+
+static void process_gps(gpointer data, gint source, GdkInputCondition condition)
+{
+ struct gps_data_t *gps_data = (struct gps_data_t *)data;
+
+ g_debug("GritsPluginGps: process_gps");
+
+ /* Process any data from the gps and call the hook function */
+ if (gps_data != NULL) {
+ gint result = gps_read(gps_data);
+ g_debug("GritsPluginGps: process_gps - gps_read returned %d, "
+ "position %f, %f.", result,
+ gps_data->fix.latitude, gps_data->fix.longitude);
+ } else {
+ g_warning("GritsPluginGps: process_gps - gps_data == NULL.");
+ }
+}
+
+static gint initialize_gpsd(char *server, gchar *port, struct gps_data_t *gps_data)
+{
+#if GPSD_API_MAJOR_VERSION < 5
+#error "GPSD protocol version 5 or greater required."
+#endif
+ gint result;
+
+ if ((result = gps_open(server, port, gps_data)) != 0) {
+ g_warning("Unable to open gpsd connection to %s:%s: %d, %d, %s",
+ server, port, result, errno, gps_errstr(errno));
+ } else {
+ (void)gps_stream(gps_data, WATCH_ENABLE|WATCH_JSON, NULL);
+ g_debug("GritsPluginGps: initialize_gpsd - gpsd fd %u.",
+ gps_data->gps_fd);
+ gdk_input_add(gps_data->gps_fd, GDK_INPUT_READ, process_gps, gps_data);
+ }
+
+ return result;
+}
+
+
+/**********************
+ * GPS Plugin Methods *
+ **********************/
+
+/* Methods */
+GritsPluginGps *grits_plugin_gps_new(GritsViewer *viewer, GritsPrefs *prefs)
+{
+ /* TODO: move to constructor if possible */
+ g_debug("GritsPluginGps: new");
+ GritsPluginGps *gps = g_object_new(GRITS_TYPE_PLUGIN_GPS, NULL);
+ gps->viewer = viewer;
+ gps->prefs = prefs;
+
+ initialize_gpsd("localhost", DEFAULT_GPSD_PORT, &gps->gps_data);
+ gps->follow_gps = FALSE;
+
+ gps_track_init(&gps->track);
+ gps_init_status_info(gps, gps->config);
+ gps_init_control_frame(gps, gps->config);
+ gps_init_track_log_frame(gps, gps->config);
+
+ return gps;
+}
+
+static GtkWidget *grits_plugin_gps_get_config(GritsPlugin *_gps)
+{
+ GritsPluginGps *gps = GRITS_PLUGIN_GPS(_gps);
+ return gps->config;
+}
+
+/* GObject code */
+static void grits_plugin_gps_plugin_init(GritsPluginInterface *iface);
+G_DEFINE_TYPE_WITH_CODE(GritsPluginGps, grits_plugin_gps, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
+ grits_plugin_gps_plugin_init));
+
+static void grits_plugin_gps_plugin_init(GritsPluginInterface *iface)
+{
+ g_debug("GritsPluginGps: plugin_init");
+ /* Add methods to the interface */
+ iface->get_config = grits_plugin_gps_get_config;
+}
+
+static void grits_plugin_gps_init(GritsPluginGps *gps)
+{
+ g_debug("GritsPluginGps: gps_init");
+
+ gps->config = gtk_hbox_new(FALSE, 15);
+}
+
+static void grits_plugin_gps_dispose(GObject *gobject)
+{
+ GritsPluginGps *gps = GRITS_PLUGIN_GPS(gobject);
+
+ g_debug("GritsPluginGps: dispose");
+
+ if (gps->viewer) {
+ if (gps->marker) {
+ grits_viewer_remove(gps->viewer,
+ GRITS_OBJECT(gps->marker));
+ }
+ g_object_unref(gps->viewer);
+ gps->viewer = NULL;
+ }
+
+ gps_track_free(&gps->track);
+
+ /* Drop references */
+ G_OBJECT_CLASS(grits_plugin_gps_parent_class)->dispose(gobject);
+}
+
+static void grits_plugin_gps_finalize(GObject *gobject)
+{
+ GritsPluginGps *gps = GRITS_PLUGIN_GPS(gobject);
+
+ g_debug("GritsPluginGps: finalize");
+
+ /* Free data */
+ gtk_widget_destroy(gps->config);
+ G_OBJECT_CLASS(grits_plugin_gps_parent_class)->finalize(gobject);
+}
+
+static void grits_plugin_gps_class_init(GritsPluginGpsClass *klass)
+{
+ g_debug("GritsPluginGps: class_init");
+ GObjectClass *gobject_class = (GObjectClass*)klass;
+ gobject_class->dispose = grits_plugin_gps_dispose;
+ gobject_class->finalize = grits_plugin_gps_finalize;
+}
projects / aweather / blobdiff