2 * Copyright (C) 2012 Adam Boggs <boggs@aircrafter.org>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 * If gpsd connection fails, try to connect again periodically.
20 * If gps stops sending data there should be an indication that it's stale.
31 #include <glib/gstdio.h>
39 #include "gps-plugin.h"
41 #include "../aweather-location.h"
43 /* interval to update map with new gps data in seconds. */
44 #define GPS_UPDATE_INTERVAL (2)
46 /* Filename and search path to use for gps marker, should be configurable */
47 #define GPS_MARKER_ICON_PATH ".:" PKGDATADIR
48 #define GPS_MARKER_ICON "arrow.png"
50 /* number of track points per group and number of groups to maintain */
51 #define GPS_TRACK_POINTS (256)
52 #define GPS_TRACK_GROUPS (16)
53 #define GPS_TRACK_POINTS_FACTOR (1.5)
55 /* interval to update log file in seconds (default value for slider) */
56 #define GPS_LOG_DEFAULT_UPDATE_INTERVAL (30)
57 #define GPS_LOG_EXT "csv"
59 /* For updating the status bar conveniently */
60 #define GPS_STATUSBAR_CONTEXT "GPS"
63 #define GPS_STATUS(gps, format, args...) \
65 gchar *buf = g_strdup_printf(format, ##args); \
66 gtk_statusbar_push(GTK_STATUSBAR(gps->status_bar), \
67 gtk_statusbar_get_context_id( \
68 GTK_STATUSBAR(gps->status_bar), \
69 GPS_STATUSBAR_CONTEXT), \
74 #define GPS_STATUS(gps, format, args...) \
76 gchar *buf = g_strdup_printf(format, ##args); \
77 g_debug("STATUS: %s", buf); \
85 /* Find a readable file in a colon delimeted path */
86 static gchar *find_path(const gchar *path, const gchar *filename)
88 gchar *end_ptr, *fullpath;
90 end_ptr = (gchar *)path;
93 while (*end_ptr != ':' && *end_ptr != '\0')
95 fullpath = g_strdup_printf("%.*s/%s", (int)(end_ptr-path), path,
97 g_debug("GritsPluginGps: find_path - searching %s", fullpath);
98 if (access(fullpath, R_OK) == 0) {
99 g_debug("GritsPluginGps: find_path - found %s", fullpath);
100 return fullpath; /* caller frees */
105 if (*end_ptr == '\0') {
108 return find_path(end_ptr + 1, filename);
113 /********************
115 ********************/
117 static gchar *gps_get_status(struct gps_data_t *gps_data)
122 switch (gps_data->fix.mode) {
124 status_color = "red";
125 status_text = "No Signal";
128 status_color = "red";
129 status_text = "No Fix";
132 status_color = "yellow";
133 status_text = "2D Mode";
136 status_color = "green";
137 status_text = "3D Mode";
140 status_color = "black";
141 status_text = "Unknown";
144 return g_strdup_printf("<span foreground=\"%s\">%s</span>",
145 status_color, status_text);
149 static gchar *gps_get_online(struct gps_data_t *gps_data)
154 if (gps_data->online == -1.0) {
155 online_str = "Offline";
157 online_str = "Online";
160 switch (gps_data->status) {
162 status_str = "No Fix";
165 status_str = "Fix Acquired";
168 status_str = "DGPS Fix";
171 status_str = "Unknown Status";
175 return g_strdup_printf("%lf,%s,%s", gps_data->online, online_str, status_str);
179 static gchar *gps_get_latitude(struct gps_data_t *gps_data)
181 return g_strdup_printf("%10.4f", gps_data->fix.latitude);
184 static gchar *gps_get_longitude(struct gps_data_t *gps_data)
186 return g_strdup_printf("%10.4f", gps_data->fix.longitude);
189 static gchar *gps_get_elevation(struct gps_data_t *gps_data)
191 /* XXX Make units (m/ft) settable */
192 return g_strdup_printf("%5.0lf %4s",
193 (gps_data->fix.altitude * METERS_TO_FEET), "ft");
196 static gchar *gps_get_heading(struct gps_data_t *gps_data)
198 /* XXX Make units (m/ft) settable */
199 return g_strdup_printf("%5.0lf %4s", gps_data->fix.track, "deg");
202 static gchar *gps_get_speed(struct gps_data_t *gps_data)
204 /* XXX Make units (m/ft) settable */
205 return g_strdup_printf("%5.0f %4s",
206 (gps_data->fix.speed*3600.0*METERS_TO_FEET/5280.0), "mph");
211 const gchar *initial_val;
212 gchar *(*get_data)(struct gps_data_t *);
214 GtkWidget *label_widget;
215 GtkWidget *value_widget;
217 {"Status:", "No Data", gps_get_status, 14, NULL, NULL},
218 // {"Online:", "No Data", gps_get_online, 14, NULL, NULL},
219 {"Latitude:", "No Data", gps_get_latitude, 14, NULL, NULL},
220 {"Longitude:", "No Data", gps_get_longitude, 14, NULL, NULL},
221 {"Elevation:", "No Data", gps_get_elevation, 14, NULL, NULL},
222 {"Heading:", "No Data", gps_get_heading, 14, NULL, NULL},
223 {"Speed:", "No Data", gps_get_speed, 14, NULL, NULL},
231 static void gps_track_init(GpsTrack *track)
233 /* Save a spot at the end for the NULL termination */
234 track->points = (gpointer)g_new0(double*, GPS_TRACK_GROUPS + 1);
235 track->cur_point = 0;
236 track->cur_group = 0;
237 track->num_points = 1; /* starts at 1 so realloc logic works */
241 static void gps_track_clear(GpsTrack *track)
244 for (pi = 0; pi < GPS_TRACK_GROUPS; pi++) {
245 if (track->points[pi] != NULL) {
246 g_free(track->points[pi]);
247 track->points[pi] = NULL;
250 track->cur_point = 0;
251 track->cur_group = 0;
252 track->num_points = 1; /* starts at 1 so realloc logic works */
255 static void gps_track_free(GpsTrack *track)
257 gps_track_clear(track);
258 g_free(track->points);
261 /* add a new track group (points in a track group are connected, and
262 * separated from points in other track groups). */
263 static void gps_track_group_incr(GpsTrack *track)
265 gdouble (**points)[3] = track->points; /* for simplicity */
267 /* Just return if they increment it again before any points have
270 if (points[track->cur_group] == NULL) {
274 g_debug("GritsPluginGps: track_group_incr - track group %u->%u.",
275 track->cur_group, track->cur_group + 1);
278 track->cur_point = 0;
279 track->num_points = 1; /* starts at 1 so realloc logic works */
281 if (track->cur_group >= GPS_TRACK_GROUPS) {
282 g_debug("GritsPluginGps: track_group_incr - track group %u "
283 "is at max %u, shifting groups",
284 track->cur_group, GPS_TRACK_GROUPS);
286 /* Free the oldest one which falls off the end */
289 /* shift the rest down, last one should be NULL already */
290 /* note we alloc GPS_TRACK_GROUPS+1 */
291 for (int pi = 0; pi < GPS_TRACK_GROUPS; pi++) {
292 points[pi] = points[pi+1];
295 /* always write into the last group */
296 track->cur_group = GPS_TRACK_GROUPS - 1;
300 static void gps_track_add_point(GpsTrack *track,
301 gdouble lat, gdouble lon, gdouble elevation)
303 gdouble (**points)[3] = track->points; /* for simplicity */
305 g_debug("GritsPluginGps: track_add_point");
307 g_assert(track->cur_group < GPS_TRACK_GROUPS &&
308 (track->cur_point <= track->num_points));
310 /* resize/allocate the point group if the current one is full */
311 if (track->cur_point >= track->num_points - 1) {
312 guint new_size = track->num_points == 1 ?
314 track->num_points * GPS_TRACK_POINTS_FACTOR;
315 g_debug("GritsPluginGps: track_add_point - reallocating points "
316 "array from %u points to %u points.\n",
317 track->num_points, new_size);
318 points[track->cur_group] = (gpointer)g_renew(gdouble,
319 points[track->cur_group], 3*(new_size+1));
320 track->num_points = new_size;
323 g_assert(points[track->cur_group] != NULL);
325 /* Add the coordinate */
326 lle2xyz(lat, lon, elevation,
327 &points[track->cur_group][track->cur_point][0],
328 &points[track->cur_group][track->cur_point][1],
329 &points[track->cur_group][track->cur_point][2]);
333 /* make sure last point is always 0s so the line drawing stops. */
334 points[track->cur_group][track->cur_point][0] = 0.0;
335 points[track->cur_group][track->cur_point][1] = 0.0;
336 points[track->cur_group][track->cur_point][2] = 0.0;
344 static gchar *gps_get_date_string(double gps_time)
346 static gchar buf[256];
347 time_t int_time = (time_t)gps_time;
350 gmtime_r(&int_time, &tm_time);
352 snprintf(buf, sizeof(buf), "%04d-%02d-%02d",
353 tm_time.tm_year+1900, tm_time.tm_mon+1, tm_time.tm_mday);
358 static gchar *gps_get_time_string(time_t gps_time)
360 static gchar buf[256];
361 time_t int_time = (time_t)gps_time;
364 gmtime_r(&int_time, &tm_time);
366 snprintf(buf, sizeof(buf), "%02d:%02d:%02dZ",
367 tm_time.tm_hour, tm_time.tm_min, tm_time.tm_sec);
372 static gboolean gps_write_log(gpointer data)
374 GritsPluginGps *gps = (GritsPluginGps *)data;
375 struct gps_data_t *gps_data = &gps->gps_data;
379 gboolean new_file = FALSE;
381 if (gps_data == NULL) {
382 g_warning("Skipped write to GPS log file: "
383 "can not get GPS coordinates.");
384 GPS_STATUS(gps, "Skipped write to GPS log file: "
385 "can not get GPS coordinates.");
389 /* get filename from text entry box. If empty, generate a name from
390 * the date and time and set it. */
391 if (strlen(gtk_entry_get_text(
392 GTK_ENTRY(gps->ui.gps_log_filename_entry))) == 0) {
393 snprintf(filename, sizeof(filename),
395 gps_get_date_string(gps->gps_data.fix.time),
396 gps_get_time_string(gps->gps_data.fix.time),
398 gtk_entry_set_text(GTK_ENTRY(gps->ui.gps_log_filename_entry),
403 gtk_entry_get_text(GTK_ENTRY(gps->ui.gps_log_filename_entry)),
406 if (!g_file_test(filename, G_FILE_TEST_EXISTS)) {
410 if ((fd = open(filename, O_CREAT|O_APPEND|O_WRONLY, 0644)) == -1) {
411 g_warning("Error opening log file %s: %s",
412 filename, strerror(errno));
417 /* write header and reset record counter */
418 snprintf(buf, sizeof(buf),
419 "No,Date,Time,Lat,Lon,Ele,Head,Speed,RTR\n");
420 if (write(fd, buf, strlen(buf)) == -1) {
421 g_warning("Error writing header to log file %s: %s",
422 filename, strerror(errno));
424 gps->ui.gps_log_number = 1;
427 /* Write log entry. Make sure this matches the header */
428 /* "No,Date,Time,Lat,Lon,Ele,Head,Speed,Fix,RTR\n" */
429 /* RTR values: T=time, B=button push, S=speed, D=distance */
430 snprintf(buf, sizeof(buf), "%d,%s,%s,%lf,%lf,%lf,%lf,%lf,%c\n",
431 gps->ui.gps_log_number++,
432 gps_get_date_string(gps->gps_data.fix.time),
433 gps_get_time_string(gps->gps_data.fix.time),
434 //gps_data->fix.time,
435 gps_data->fix.latitude,
436 gps_data->fix.longitude,
437 gps_data->fix.altitude * METERS_TO_FEET,
439 gps_data->fix.speed * METERS_TO_FEET,
440 'T'); /* position due to timer expired */
442 if (write(fd, buf, strlen(buf)) == -1) {
443 g_warning("Could not write log number %d to log file %s: %s",
444 gps->ui.gps_log_number-1, filename, strerror(errno));
448 GPS_STATUS(gps, "Updated GPS log file %s.", filename);
459 static gboolean gps_data_is_valid(struct gps_data_t *gps_data)
461 if (gps_data != NULL && gps_data->online != -1.0 &&
462 gps_data->fix.mode >= MODE_2D &&
463 gps_data->status > STATUS_NO_FIX) {
470 static void gps_update_status(GritsPluginGps *gps)
472 struct gps_data_t *gps_data = &gps->gps_data;
474 /* gps table update */
475 for (gint i = 0; i < G_N_ELEMENTS(gps_table); i++) {
476 gchar *str = gps_table[i].get_data(gps_data);
477 gtk_label_set_markup(GTK_LABEL(gps_table[i].value_widget), str);
482 /* external interface to update UI from latest GPS data. */
483 gboolean gps_redraw_all(gpointer data)
485 GritsPluginGps *gps = (GritsPluginGps *)data;
488 struct gps_data_t *gps_data = &gps->gps_data;
490 g_debug("GritsPluginGps: redraw_all");
493 if (!gps_data_is_valid(gps_data)) {
494 g_debug("GritsPluginGps: redraw_all - gps_data is not valid.");
495 /* XXX Change marker to indicate data is not valid */
499 /* update position labels */
500 gps_update_status(gps);
502 /* Update track and marker position */
503 if (gps_data_is_valid(gps_data) && gps->track.active) {
504 g_debug("GritsPluginGps: redraw_all - updating track group %u "
505 "point %u at lat = %f, long = %f, track = %f",
506 gps->track.cur_group,
507 gps->track.cur_point,
508 gps_data->fix.latitude,
509 gps_data->fix.longitude,
510 gps_data->fix.track);
512 gps_track_add_point(&gps->track,
513 gps_data->fix.latitude, gps_data->fix.longitude, 0.0);
515 if (gps->track.line) {
516 grits_viewer_remove(gps->viewer,
517 GRITS_OBJECT(gps->track.line));
518 gps->track.line = NULL;
521 gps->track.line = grits_line_new(gps->track.points);
522 gps->track.line->color[0] = 1.0;
523 gps->track.line->color[1] = 0;
524 gps->track.line->color[2] = 0.1;
525 gps->track.line->color[3] = 1.0;
526 gps->track.line->width = 3;
528 grits_viewer_add(gps->viewer, GRITS_OBJECT(gps->track.line),
529 GRITS_LEVEL_OVERLAY, FALSE);
530 grits_object_queue_draw(GRITS_OBJECT(gps->track.line));
533 if (gps_data_is_valid(gps_data)) {
535 grits_viewer_remove(gps->viewer,
536 GRITS_OBJECT(gps->marker));
540 gchar *path = find_path(GPS_MARKER_ICON_PATH, GPS_MARKER_ICON);
542 gps->marker = grits_marker_icon_new("GPS", path,
543 gps_data->fix.track, TRUE, GRITS_MARKER_DMASK_ICON);
546 /* if icon not found just use a point */
547 g_warning("Could not find GPS marker icon %s in path %s.",
548 GPS_MARKER_ICON, GPS_MARKER_ICON_PATH);
549 gps->marker = grits_marker_icon_new("GPS", NULL,
550 gps_data->fix.track, FALSE,
551 GRITS_MARKER_DMASK_POINT |
552 GRITS_MARKER_DMASK_LABEL);
555 GRITS_OBJECT(gps->marker)->center.lat = gps_data->fix.latitude;
556 GRITS_OBJECT(gps->marker)->center.lon = gps_data->fix.longitude;
557 GRITS_OBJECT(gps->marker)->center.elev = 0.0;
558 GRITS_OBJECT(gps->marker)->lod = EARTH_R * 5;
559 GRITS_MARKER(gps->marker)->ortho = FALSE;
561 grits_viewer_add(gps->viewer, GRITS_OBJECT(gps->marker),
562 GRITS_LEVEL_OVERLAY+1, FALSE);
563 grits_object_queue_draw(GRITS_OBJECT(gps->marker));
566 if (gps->follow_gps && gps_data_is_valid(gps_data)) {
567 /* Center map at current GPS position. */
568 g_debug("GritsPluginGps: redraw_all - centering map at "
569 "lat = %f, long = %f, track = %f",
570 gps_data->fix.latitude,
571 gps_data->fix.longitude,
572 gps_data->fix.track);
574 double lat, lon, elev;
575 grits_viewer_get_location(gps->viewer, &lat, &lon, &elev);
576 grits_viewer_set_location(gps->viewer, gps_data->fix.latitude,
577 gps_data->fix.longitude, elev);
578 //grits_viewer_set_rotation(gps->viewer, 0, 0, 0);
591 static void gps_init_status_info(GritsPluginGps *gps, GtkWidget *gbox)
593 gps->ui.gps_status_frame = gtk_frame_new("<b>GPS Data</b>");
594 GtkWidget *label = gtk_frame_get_label_widget(
595 GTK_FRAME(gps->ui.gps_status_frame));
596 gtk_label_set_use_markup(GTK_LABEL(label), TRUE);
597 gtk_frame_set_shadow_type(GTK_FRAME(gps->ui.gps_status_frame),
599 gps->ui.gps_status_table = gtk_table_new(5, 2, FALSE);
600 gtk_container_add(GTK_CONTAINER(gps->ui.gps_status_frame),
601 gps->ui.gps_status_table);
604 /* gps data table setup */
606 for (i = 0; i < G_N_ELEMENTS(gps_table); i++) {
607 gps_table[i].label_widget = gtk_label_new(gps_table[i].label);
608 gps_table[i].value_widget = gtk_label_new(gps_table[i].initial_val);
610 gtk_misc_set_alignment(GTK_MISC(gps_table[i].label_widget), 0, 0);
611 gtk_misc_set_alignment(GTK_MISC(gps_table[i].value_widget), 1, 0);
613 gtk_table_attach(GTK_TABLE(gps->ui.gps_status_table),
614 gps_table[i].label_widget, 0, 1, i, i+1,
615 GTK_EXPAND|GTK_FILL, GTK_EXPAND|GTK_FILL, 0, 0);
616 gtk_table_attach(GTK_TABLE(gps->ui.gps_status_table),
617 gps_table[i].value_widget, 1, 2, i, i+1,
618 GTK_EXPAND|GTK_FILL, GTK_EXPAND|GTK_FILL, 0, 0);
620 PangoFontDescription *roman = pango_font_description_new();
621 PangoFontDescription *mono = pango_font_description_from_string("monospace");
622 pango_font_description_set_size(roman, gps_table[i].font_size*PANGO_SCALE);
623 pango_font_description_set_size(mono, gps_table[i].font_size*PANGO_SCALE);
624 gtk_widget_modify_font(gps_table[i].label_widget, roman);
625 gtk_widget_modify_font(gps_table[i].value_widget, mono);
626 pango_font_description_free(roman);
627 pango_font_description_free(mono);
629 gtk_box_pack_start(GTK_BOX(gbox), gps->ui.gps_status_frame,
632 /* Start UI refresh task, which will reschedule itgps. */
634 gps->gps_update_timeout_id = g_timeout_add(
635 GPS_UPDATE_INTERVAL*1000,
636 gps_redraw_all, gps);
640 /* GPS Control Frame */
641 static gboolean on_gps_follow_clicked_event(GtkWidget *widget, gpointer user_data)
643 GritsPluginGps *gps = (GritsPluginGps *)user_data;
645 g_debug("GritsPluginGps: follow_clicked_event - button status %d",
646 gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)));
647 if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget))) {
648 gps->follow_gps = TRUE;
650 gps->follow_gps = FALSE;
656 static gboolean on_gps_track_enable_clicked_event(GtkWidget *widget, gpointer user_data)
658 GritsPluginGps *gps = (GritsPluginGps *)user_data;
660 g_debug("GritsPluginGps: track_enable_clicked_event");
662 if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget))) {
663 /* start logging trip history */
664 GPS_STATUS(gps, "Enabled GPS track.");
665 gps->track.active = TRUE;
667 /* stop logging trip history */
668 GPS_STATUS(gps, "Disabled GPS track.");
669 gps->track.active = FALSE;
670 /* advance to the next track group, moving everything down if
672 gps_track_group_incr(&gps->track);
678 static gboolean on_gps_track_clear_clicked_event(GtkWidget *widget, gpointer user_data)
680 GritsPluginGps *gps = (GritsPluginGps *)user_data;
682 g_debug("GritsPluginGps: track_clear_clicked_event");
683 GPS_STATUS(gps, "Cleared GPS track.");
684 gps_track_clear(&gps->track);
689 static void gps_init_control_frame(GritsPluginGps *gps, GtkWidget *gbox)
691 /* Control checkboxes */
692 GtkWidget *gps_control_frame = gtk_frame_new("<b>GPS Control</b>");
693 GtkWidget *label = gtk_frame_get_label_widget(
694 GTK_FRAME(gps_control_frame));
695 gtk_label_set_use_markup(GTK_LABEL(label), TRUE);
696 gtk_frame_set_shadow_type(GTK_FRAME(gps_control_frame),
698 GtkWidget *cbox = gtk_vbox_new(FALSE, 2);
699 gtk_container_add(GTK_CONTAINER(gps_control_frame), cbox);
700 gtk_box_pack_start(GTK_BOX(gbox), gps_control_frame, FALSE, FALSE, 0);
702 gps->ui.gps_follow_checkbox =
703 gtk_check_button_new_with_label("Follow GPS");
704 g_signal_connect(G_OBJECT(gps->ui.gps_follow_checkbox), "clicked",
705 G_CALLBACK(on_gps_follow_clicked_event),
707 gtk_box_pack_start(GTK_BOX(cbox), gps->ui.gps_follow_checkbox,
710 gps->ui.gps_track_checkbox =
711 gtk_check_button_new_with_label("Record Track");
712 g_signal_connect(G_OBJECT(gps->ui.gps_track_checkbox), "clicked",
713 G_CALLBACK(on_gps_track_enable_clicked_event),
715 gtk_box_pack_start(GTK_BOX(cbox), gps->ui.gps_track_checkbox,
718 gps->ui.gps_clear_button = gtk_button_new_with_label("Clear Track");
719 g_signal_connect(G_OBJECT(gps->ui.gps_clear_button), "clicked",
720 G_CALLBACK(on_gps_track_clear_clicked_event),
722 gtk_box_pack_start(GTK_BOX(cbox), gps->ui.gps_clear_button,
726 /* Track Log Frame */
727 static gboolean on_gps_log_clicked_event(GtkWidget *widget, gpointer user_data)
729 GritsPluginGps *gps = (GritsPluginGps *)user_data;
731 g_debug("GritsPluginGps: log_clicked_event");
733 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (widget))) {
736 /* Schedule log file write */
737 gps->ui.gps_log_timeout_id = g_timeout_add(
739 GTK_RANGE(gps->ui.gps_log_interval_slider))*1000,
742 /* button unchecked */
743 g_source_remove(gps->ui.gps_log_timeout_id);
744 gps->ui.gps_log_timeout_id = 0;
745 g_debug("GritsPluginGps: log_clicked_event - closed log file.");
751 static gboolean on_gps_log_interval_changed_event(GtkWidget *widget, gpointer user_data)
753 GritsPluginGps *gps = (GritsPluginGps *)user_data;
757 g_debug("GritsPluginGps: log_interval_changed_event - value = %f",
758 gtk_range_get_value(GTK_RANGE(widget)));
760 if (gtk_toggle_button_get_active(
761 GTK_TOGGLE_BUTTON(gps->ui.gps_log_checkbox))) {
762 g_assert(gps->ui.gps_log_timeout_id != 0);
764 /* disable old timeout */
765 g_source_remove(gps->ui.gps_log_timeout_id);
766 gps->ui.gps_log_timeout_id = 0;
768 /* Schedule new log file write */
769 gps->ui.gps_log_timeout_id = g_timeout_add(
770 gtk_range_get_value(GTK_RANGE(widget))*1000,
778 static void gps_init_track_log_frame(GritsPluginGps *gps, GtkWidget *gbox)
780 /* Track log box with enable checkbox and filename entry */
781 GtkWidget *gps_log_frame = gtk_frame_new("<b>Track Log</b>");
782 GtkWidget *label = gtk_frame_get_label_widget(GTK_FRAME(gps_log_frame));
783 gtk_label_set_use_markup(GTK_LABEL(label), TRUE);
784 gtk_frame_set_shadow_type(GTK_FRAME(gps_log_frame), GTK_SHADOW_NONE);
785 GtkWidget *lbox = gtk_vbox_new(FALSE, 2);
786 gtk_container_add(GTK_CONTAINER(gps_log_frame), lbox);
787 gtk_box_pack_start(GTK_BOX(gbox), gps_log_frame,
790 gps->ui.gps_log_checkbox =
791 gtk_check_button_new_with_label("Log Position to File");
792 g_signal_connect(G_OBJECT(gps->ui.gps_log_checkbox), "clicked",
793 G_CALLBACK(on_gps_log_clicked_event),
795 gtk_box_pack_start(GTK_BOX(lbox), gps->ui.gps_log_checkbox,
798 /* Set up filename entry box */
799 GtkWidget *fbox = gtk_hbox_new(FALSE, 2);
800 GtkWidget *filename_label = gtk_label_new("Filename:");
801 gtk_box_pack_start(GTK_BOX(fbox), filename_label, FALSE, FALSE, 0);
802 gps->ui.gps_log_filename_entry = gtk_entry_new();
803 gtk_box_pack_start(GTK_BOX(fbox), gps->ui.gps_log_filename_entry,
805 gtk_box_pack_start(GTK_BOX(lbox), fbox, FALSE, FALSE, 0);
807 /* set up gps log interval slider */
808 GtkWidget *ubox = gtk_hbox_new(FALSE, 4);
809 GtkWidget *interval_label = gtk_label_new("Update Interval:");
810 gtk_box_pack_start(GTK_BOX(ubox), interval_label, FALSE, FALSE, 0);
811 gps->ui.gps_log_interval_slider =
812 gtk_hscale_new_with_range(1.0, 600.0, 30.0);
813 gtk_range_set_value(GTK_RANGE(gps->ui.gps_log_interval_slider),
814 GPS_LOG_DEFAULT_UPDATE_INTERVAL);
815 g_signal_connect(G_OBJECT(gps->ui.gps_log_interval_slider),
817 G_CALLBACK(on_gps_log_interval_changed_event),
819 gtk_range_set_increments(
820 GTK_RANGE(gps->ui.gps_log_interval_slider),
821 10.0 /* step */, 30.0 /* page up/down */);
822 gtk_range_set_update_policy(
823 GTK_RANGE(gps->ui.gps_log_interval_slider),
825 gtk_box_pack_start(GTK_BOX(ubox), gps->ui.gps_log_interval_slider,
827 gtk_box_pack_start(GTK_BOX(lbox), ubox, FALSE, FALSE, 0);
835 static gboolean process_gps(GIOChannel *source, GIOCondition condition, gpointer data)
837 struct gps_data_t *gps_data = (struct gps_data_t *)data;
839 g_debug("GritsPluginGps: process_gps");
841 /* Process any data from the gps and call the hook function */
842 if (gps_data != NULL) {
843 gdouble track = gps_data->fix.track;
844 gint result = gps_read(gps_data);
845 if (isnan(gps_data->fix.track))
846 gps_data->fix.track = track;
847 g_debug("GritsPluginGps: process_gps - gps_read returned %d, "
848 "position %f, %f.", result,
849 gps_data->fix.latitude, gps_data->fix.longitude);
851 g_warning("GritsPluginGps: process_gps - gps_data == NULL.");
856 static gint initialize_gpsd(char *server, gchar *port, struct gps_data_t *gps_data)
858 #if GPSD_API_MAJOR_VERSION < 5
859 #error "GPSD protocol version 5 or greater required."
861 gint result = gps_open(server, port, gps_data);
863 g_warning("Unable to open gpsd connection to %s:%s: %d, %d, %s",
864 server, port, result, errno, gps_errstr(errno));
868 (void)gps_stream(gps_data, WATCH_ENABLE|WATCH_JSON, NULL);
869 g_debug("GritsPluginGps: initialize_gpsd - gpsd fd %u.", gps_data->gps_fd);
870 GIOChannel *channel = g_io_channel_unix_new(gps_data->gps_fd);
871 gint input_tag = g_io_add_watch(channel, G_IO_IN, process_gps, gps_data);
872 g_io_channel_unref(channel);
877 /**********************
878 * GPS Plugin Methods *
879 **********************/
882 GritsPluginGps *grits_plugin_gps_new(GritsViewer *viewer, GritsPrefs *prefs)
884 /* TODO: move to constructor if possible */
885 g_debug("GritsPluginGps: new");
886 GritsPluginGps *gps = g_object_new(GRITS_TYPE_PLUGIN_GPS, NULL);
887 gps->viewer = g_object_ref(viewer);
888 gps->prefs = g_object_ref(prefs);
890 gps->input_tag = initialize_gpsd("localhost", DEFAULT_GPSD_PORT, &gps->gps_data);
891 gps->follow_gps = FALSE;
893 gps_track_init(&gps->track);
894 gps_init_status_info(gps, gps->config);
895 gps_init_control_frame(gps, gps->config);
896 gps_init_track_log_frame(gps, gps->config);
901 static GtkWidget *grits_plugin_gps_get_config(GritsPlugin *_gps)
903 GritsPluginGps *gps = GRITS_PLUGIN_GPS(_gps);
908 static void grits_plugin_gps_plugin_init(GritsPluginInterface *iface);
909 G_DEFINE_TYPE_WITH_CODE(GritsPluginGps, grits_plugin_gps, G_TYPE_OBJECT,
910 G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
911 grits_plugin_gps_plugin_init));
913 static void grits_plugin_gps_plugin_init(GritsPluginInterface *iface)
915 g_debug("GritsPluginGps: plugin_init");
916 /* Add methods to the interface */
917 iface->get_config = grits_plugin_gps_get_config;
920 static void grits_plugin_gps_init(GritsPluginGps *gps)
922 g_debug("GritsPluginGps: gps_init");
924 gps->config = gtk_hbox_new(FALSE, 15);
927 static void grits_plugin_gps_dispose(GObject *gobject)
929 GritsPluginGps *gps = GRITS_PLUGIN_GPS(gobject);
931 g_debug("GritsPluginGps: dispose");
933 if (gps->gps_update_timeout_id) {
934 g_source_remove(gps->gps_update_timeout_id);
935 gps->gps_update_timeout_id = 0;
937 if (gps->ui.gps_log_timeout_id) {
938 g_source_remove(gps->ui.gps_log_timeout_id);
939 gps->ui.gps_log_timeout_id = 0;
941 if (gps->input_tag) {
942 g_source_remove(gps->input_tag);
946 GritsViewer *viewer = gps->viewer;
949 grits_viewer_remove(viewer,
950 GRITS_OBJECT(gps->marker));
951 g_object_unref(gps->prefs);
952 g_object_unref(viewer);
955 /* Drop references */
956 G_OBJECT_CLASS(grits_plugin_gps_parent_class)->dispose(gobject);
959 static void grits_plugin_gps_finalize(GObject *gobject)
961 GritsPluginGps *gps = GRITS_PLUGIN_GPS(gobject);
963 g_debug("GritsPluginGps: finalize");
966 gps_track_free(&gps->track);
967 G_OBJECT_CLASS(grits_plugin_gps_parent_class)->finalize(gobject);
970 static void grits_plugin_gps_class_init(GritsPluginGpsClass *klass)
972 g_debug("GritsPluginGps: class_init");
973 GObjectClass *gobject_class = (GObjectClass*)klass;
974 gobject_class->dispose = grits_plugin_gps_dispose;
975 gobject_class->finalize = grits_plugin_gps_finalize;