1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
3 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
5 * Copyright (C) 2013, Rob Norris <rw_norris@hotmail.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Dependencies in this file can be on anything.
24 * For functions with simple system dependencies put it in util.c
27 #include <glib/gstdio.h>
28 #include <glib/gi18n.h>
35 #include "preferences.h"
36 #include "vikmapslayer.h"
40 #include "misc/kdtree.h"
42 #define FMT_MAX_NUMBER_CODES 9
45 * vu_trackpoint_formatted_message:
46 * @format_code: String describing the message to generate
47 * @trkpt: The trackpoint for which the message is generated about
48 * @trkpt_prev: A trackpoint (presumed previous) for interpolating values with the other trackpoint (such as speed)
49 * @trk: The track in which the trackpoints reside
50 * @climb: Vertical speed (Out of band (i.e. not in a trackpoint) value for display currently only for GPSD usage)
52 * TODO: One day replace this cryptic format code with some kind of tokenizer parsing
53 * thus would make it more user friendly and maybe even GUI controlable.
54 * However for now at least there is some semblance of user control
56 gchar* vu_trackpoint_formatted_message ( gchar *format_code, VikTrackpoint *trkpt, VikTrackpoint *trkpt_prev, VikTrack *trk, gdouble climb )
63 len = strlen ( format_code );
64 if ( len > FMT_MAX_NUMBER_CODES )
65 len = FMT_MAX_NUMBER_CODES;
67 gchar* values[FMT_MAX_NUMBER_CODES];
69 for ( i = 0; i < FMT_MAX_NUMBER_CODES; i++ ) {
73 gchar *speed_units_str = NULL;
74 vik_units_speed_t speed_units = a_vik_get_units_speed ();
75 switch (speed_units) {
76 case VIK_UNITS_SPEED_MILES_PER_HOUR:
77 speed_units_str = g_strdup ( _("mph") );
79 case VIK_UNITS_SPEED_METRES_PER_SECOND:
80 speed_units_str = g_strdup ( _("m/s") );
82 case VIK_UNITS_SPEED_KNOTS:
83 speed_units_str = g_strdup ( _("knots") );
86 // VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
87 speed_units_str = g_strdup ( _("km/h") );
91 gchar *separator = g_strdup ( " | " );
93 for ( i = 0; i < len; i++ ) {
94 switch ( g_ascii_toupper ( format_code[i] ) ) {
95 case 'G': values[i] = g_strdup ( _("GPSD") ); break; // GPS Preamble
96 case 'K': values[i] = g_strdup ( _("Trkpt") ); break; // Trkpt Preamble
100 gchar *speedtype = NULL;
101 if ( isnan(trkpt->speed) && trkpt_prev ) {
102 if ( trkpt->has_timestamp && trkpt_prev->has_timestamp ) {
103 if ( trkpt->timestamp != trkpt_prev->timestamp ) {
105 // Work out from previous trackpoint location and time difference
106 speed = vik_coord_diff(&(trkpt->coord), &(trkpt_prev->coord)) / ABS(trkpt->timestamp - trkpt_prev->timestamp);
107 speedtype = g_strdup ( "*" ); // Interpolated
110 speedtype = g_strdup ( "**" );
113 speedtype = g_strdup ( "**" );
116 speed = trkpt->speed;
117 speedtype = g_strdup ( "" );
119 switch (speed_units) {
120 case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
121 speed = VIK_MPS_TO_KPH(speed);
123 case VIK_UNITS_SPEED_MILES_PER_HOUR:
124 speed = VIK_MPS_TO_MPH(speed);
126 case VIK_UNITS_SPEED_KNOTS:
127 speed = VIK_MPS_TO_KNOTS(speed);
130 // VIK_UNITS_SPEED_METRES_PER_SECOND:
131 // Already in m/s so nothing to do
135 values[i] = g_strdup_printf ( _("%sSpeed%s %.1f%s"), separator, speedtype, speed, speed_units_str );
136 g_free ( speedtype );
142 gchar *speedtype = NULL;
143 if ( isnan(climb) && trkpt_prev ) {
144 if ( trkpt->has_timestamp && trkpt_prev->has_timestamp ) {
145 if ( trkpt->timestamp != trkpt_prev->timestamp ) {
146 // Work out from previous trackpoint altitudes and time difference
147 // 'speed' can be negative if going downhill
148 speed = (trkpt->altitude - trkpt_prev->altitude) / ABS(trkpt->timestamp - trkpt_prev->timestamp);
149 speedtype = g_strdup ( "*" ); // Interpolated
152 speedtype = g_strdup ( "**" ); // Unavailable
155 speedtype = g_strdup ( "**" );
159 speedtype = g_strdup ( "" );
161 switch (speed_units) {
162 case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
163 speed = VIK_MPS_TO_KPH(speed);
165 case VIK_UNITS_SPEED_MILES_PER_HOUR:
166 speed = VIK_MPS_TO_MPH(speed);
168 case VIK_UNITS_SPEED_KNOTS:
169 speed = VIK_MPS_TO_KNOTS(speed);
172 // VIK_UNITS_SPEED_METRES_PER_SECOND:
173 // Already in m/s so nothing to do
176 // Go for 2dp as expect low values for vertical speeds
177 values[i] = g_strdup_printf ( _("%sClimb%s %.2f%s"), separator, speedtype, speed, speed_units_str );
178 g_free ( speedtype );
183 vik_units_height_t height_units = a_vik_get_units_height ();
184 switch (height_units) {
185 case VIK_UNITS_HEIGHT_FEET:
186 values[i] = g_strdup_printf ( _("%sAlt %dfeet"), separator, (int)round(VIK_METERS_TO_FEET(trkpt->altitude)) );
189 //VIK_UNITS_HEIGHT_METRES:
190 values[i] = g_strdup_printf ( _("%sAlt %dm"), separator, (int)round(trkpt->altitude) );
197 gint heading = isnan(trkpt->course) ? 0 : (gint)round(trkpt->course);
198 values[i] = g_strdup_printf ( _("%sCourse %03d\302\260" ), separator, heading );
204 gint diff = (gint) round ( vik_coord_diff ( &(trkpt->coord), &(trkpt_prev->coord) ) );
206 gchar *dist_units_str = NULL;
207 vik_units_distance_t dist_units = a_vik_get_units_distance ();
208 // expect the difference between track points to be small hence use metres or yards
209 switch (dist_units) {
210 case VIK_UNITS_DISTANCE_MILES:
211 case VIK_UNITS_DISTANCE_NAUTICAL_MILES:
212 dist_units_str = g_strdup ( _("yards") );
215 // VIK_UNITS_DISTANCE_KILOMETRES:
216 dist_units_str = g_strdup ( _("m") );
220 values[i] = g_strdup_printf ( _("%sDistance diff %d%s"), separator, diff, dist_units_str );
222 g_free ( dist_units_str );
229 if ( trkpt->has_timestamp ) {
230 // Compact date time format
231 msg = vu_get_time_string ( &(trkpt->timestamp), "%x %X", &(trkpt->coord), NULL );
234 msg = g_strdup ("--");
235 values[i] = g_strdup_printf ( _("%sTime %s"), separator, msg );
242 if ( trkpt->has_timestamp && trkpt_prev->has_timestamp ) {
243 time_t t_diff = trkpt->timestamp - trkpt_prev->timestamp;
244 values[i] = g_strdup_printf ( _("%sTime diff %lds"), separator, t_diff );
250 case 'X': values[i] = g_strdup_printf ( _("%sNo. of Sats %d"), separator, trkpt->nsats ); break;
254 // Distance to the end 'Finish' (along the track)
255 gdouble distd = vik_track_get_length_to_trackpoint (trk, trkpt);
256 gdouble diste = vik_track_get_length_including_gaps ( trk );
257 gdouble dist = diste - distd;
258 gchar *dist_units_str = NULL;
259 vik_units_distance_t dist_units = a_vik_get_units_distance ();
260 switch (dist_units) {
261 case VIK_UNITS_DISTANCE_MILES:
262 dist_units_str = g_strdup ( _("miles") );
263 dist = VIK_METERS_TO_MILES(dist);
265 case VIK_UNITS_DISTANCE_NAUTICAL_MILES:
266 dist_units_str = g_strdup ( _("NM") );
267 dist = VIK_METERS_TO_NAUTICAL_MILES(dist);
270 // VIK_UNITS_DISTANCE_KILOMETRES:
271 dist_units_str = g_strdup ( _("km") );
272 dist = dist / 1000.0;
275 values[i] = g_strdup_printf ( _("%sTo End %.2f%s"), separator, dist, dist_units_str );
276 g_free ( dist_units_str );
283 // Distance from start (along the track)
284 gdouble distd = vik_track_get_length_to_trackpoint (trk, trkpt);
285 gchar *dist_units_str = NULL;
286 vik_units_distance_t dist_units = a_vik_get_units_distance ();
287 switch (dist_units) {
288 case VIK_UNITS_DISTANCE_MILES:
289 dist_units_str = g_strdup ( _("miles") );
290 distd = VIK_METERS_TO_MILES(distd);
292 case VIK_UNITS_DISTANCE_NAUTICAL_MILES:
293 dist_units_str = g_strdup ( _("NM") );
294 distd = VIK_METERS_TO_NAUTICAL_MILES(distd);
297 // VIK_UNITS_DISTANCE_KILOMETRES:
298 dist_units_str = g_strdup ( _("km") );
299 distd = distd / 1000.0;
302 values[i] = g_strdup_printf ( _("%sDistance along %.2f%s"), separator, distd, dist_units_str );
303 g_free ( dist_units_str );
309 // Location (Lat/Long)
310 gchar *lat = NULL, *lon = NULL;
312 vik_coord_to_latlon (&(trkpt->coord), &ll);
313 a_coords_latlon_to_string ( &ll, &lat, &lon );
314 values[i] = g_strdup_printf ( "%s%s %s", separator, lat, lon );
320 case 'N': // Name of track
322 values[i] = g_strdup_printf ( _("%sTrack: %s"), separator, trk->name );
325 case 'E': // Name of trackpoint if available
327 values[i] = g_strdup_printf ( "%s%s", separator, trkpt->name );
329 values[i] = g_strdup ( "" );
337 g_free ( separator );
338 g_free ( speed_units_str );
340 gchar *msg = g_strconcat ( values[0], values[1], values[2], values[3], values[4], values[5], values[6], values[7], values[8], NULL );
342 for ( i = 0; i < FMT_MAX_NUMBER_CODES; i++ ) {
343 if ( values[i] != '\0' )
344 g_free ( values[i] );
351 GtkWindow *window; // Layer needed for redrawing
352 gchar *version; // Image list
353 } new_version_thread_data;
355 static gboolean new_version_available_message ( new_version_thread_data *nvtd )
357 // Only a simple goto website option is offered
358 // Trying to do an installation update is platform specific
359 if ( a_dialog_yes_or_no ( nvtd->window,
360 _("There is a newer version of Viking available: %s\n\nDo you wish to go to Viking's website now?"), nvtd->version ) )
361 // NB 'VIKING_URL' redirects to the Wiki, here we want to go the main site.
362 open_url ( nvtd->window, "http://sourceforge.net/projects/viking/" );
364 g_free ( nvtd->version );
369 #define VIK_SETTINGS_VERSION_CHECKED_DATE "version_checked_date"
371 static void latest_version_thread ( GtkWindow *window )
373 // Need to allow a few redirects, as SF file is often served from different server
374 DownloadMapOptions options = { FALSE, FALSE, NULL, 5, NULL, NULL, NULL };
375 gchar *filename = a_download_uri_to_tmp_file ( "http://sourceforge.net/projects/viking/files/VERSION", &options );
376 //gchar *filename = g_strdup ( "VERSION" );
381 GMappedFile *mf = g_mapped_file_new ( filename, FALSE, NULL );
385 gchar *text = g_mapped_file_get_contents ( mf );
387 gint latest_version = viking_version_to_number ( text );
388 gint my_version = viking_version_to_number ( VIKING_VERSION );
390 g_debug ( "The lastest version is: %s", text );
392 if ( my_version < latest_version ) {
393 new_version_thread_data *nvtd = g_malloc ( sizeof(new_version_thread_data) );
394 nvtd->window = window;
395 nvtd->version = g_strdup ( text );
396 gdk_threads_add_idle ( (GSourceFunc) new_version_available_message, nvtd );
399 g_debug ( "Running the lastest version: %s", VIKING_VERSION );
401 g_mapped_file_unref ( mf );
403 g_remove ( filename );
407 // Update last checked time
409 g_get_current_time ( &time );
410 a_settings_set_string ( VIK_SETTINGS_VERSION_CHECKED_DATE, g_time_val_to_iso8601(&time) );
413 #define VIK_SETTINGS_VERSION_CHECK_PERIOD "version_check_period_days"
416 * vu_check_latest_version:
417 * @window: Somewhere where we may need use the display to inform the user about the version status
419 * Periodically checks the released latest VERSION file on the website to compare with the running version
422 void vu_check_latest_version ( GtkWindow *window )
424 if ( ! a_vik_get_check_version () )
427 gboolean do_check = FALSE;
430 if ( ! a_settings_get_integer ( VIK_SETTINGS_VERSION_CHECK_PERIOD, &check_period ) ) {
434 // Get last checked date...
435 GDate *gdate_last = g_date_new();
436 GDate *gdate_now = g_date_new();
438 gchar *last_checked_date = NULL;
440 // When no previous date available - set to do the version check
441 if ( a_settings_get_string ( VIK_SETTINGS_VERSION_CHECKED_DATE, &last_checked_date) ) {
442 if ( g_time_val_from_iso8601 ( last_checked_date, &time_last ) ) {
443 g_date_set_time_val ( gdate_last, &time_last );
452 g_get_current_time ( &time_now );
453 g_date_set_time_val ( gdate_now, &time_now );
456 // Dates available so do the comparison
457 g_date_add_days ( gdate_last, check_period );
458 if ( g_date_compare ( gdate_last, gdate_now ) < 0 )
462 g_date_free ( gdate_last );
463 g_date_free ( gdate_now );
466 #if GLIB_CHECK_VERSION (2, 32, 0)
467 g_thread_try_new ( "latest_version_thread", (GThreadFunc)latest_version_thread, window, NULL );
469 g_thread_create ( (GThreadFunc)latest_version_thread, window, FALSE, NULL );
475 * vu_set_auto_features_on_first_run:
477 * Ask the user's opinion to set some of Viking's default behaviour
479 void vu_set_auto_features_on_first_run ( void )
481 gboolean auto_features = FALSE;
482 gboolean set_defaults = FALSE;
484 if ( a_vik_very_first_run () ) {
486 GtkWidget *win = gtk_window_new ( GTK_WINDOW_TOPLEVEL );
488 if ( a_dialog_yes_or_no ( GTK_WINDOW(win),
489 _("This appears to be Viking's very first run.\n\nDo you wish to enable automatic internet features?\n\nIndividual settings can be controlled in the Preferences."), NULL ) )
490 auto_features = TRUE;
492 // Default to more standard cache layout for new users (well new installs at least)
493 maps_layer_set_cache_default ( VIK_MAPS_CACHE_LAYOUT_OSM );
497 if ( auto_features ) {
498 // Set Maps to autodownload
499 // Ensure the default is true
500 maps_layer_set_autodownload_default ( TRUE );
503 // Simplistic repeat of preference settings
504 // Only the name & type are important for setting a preference via this 'external' way
506 // Enable auto add map +
508 VikLayerParam pref_add_map[] = { { VIK_LAYER_NUM_TYPES, VIKING_PREFERENCES_STARTUP_NAMESPACE "add_default_map_layer", VIK_LAYER_PARAM_BOOLEAN, VIK_LAYER_GROUP_NONE, NULL, VIK_LAYER_WIDGET_CHECKBUTTON, NULL, NULL, NULL, NULL, NULL, NULL, }, };
509 VikLayerParam pref_startup_method[] = { { VIK_LAYER_NUM_TYPES, VIKING_PREFERENCES_STARTUP_NAMESPACE "startup_method", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, NULL, VIK_LAYER_WIDGET_COMBOBOX, NULL, NULL, NULL, NULL, NULL, NULL}, };
511 VikLayerParamData vlp_data;
513 a_preferences_run_setparam ( vlp_data, pref_add_map );
515 vlp_data.u = VIK_STARTUP_METHOD_AUTO_LOCATION;
516 a_preferences_run_setparam ( vlp_data, pref_startup_method );
518 // Only on Windows make checking for the latest version on by default
519 // For other systems it's expected a Package manager or similar controls the installation, so leave it off
521 VikLayerParam pref_startup_version_check[] = { { VIK_LAYER_NUM_TYPES, VIKING_PREFERENCES_STARTUP_NAMESPACE "check_version", VIK_LAYER_PARAM_BOOLEAN, VIK_LAYER_GROUP_NONE, NULL, VIK_LAYER_WIDGET_CHECKBUTTON, NULL, NULL, NULL, NULL, }, };
523 a_preferences_run_setparam ( vlp_data, pref_startup_version_check );
526 // Ensure settings are saved for next time
527 a_preferences_save_to_file ();
530 // Ensure defaults are saved if changed
532 a_layer_defaults_save ();
536 * vu_get_canonical_filename:
538 * Returns: Canonical absolute filename
540 * Any time a path may contain a relative component, so need to prepend that directory it is relative to
541 * Then resolve the full path to get the normal canonical filename
543 gchar *vu_get_canonical_filename ( VikLayer *vl, const gchar *filename )
545 gchar *canonical = NULL;
549 if ( g_path_is_absolute ( filename ) )
550 canonical = g_strdup ( filename );
552 const gchar *vw_filename = vik_window_get_filename ( VIK_WINDOW_FROM_WIDGET (vl->vvp) );
553 gchar *dirpath = NULL;
555 dirpath = g_path_get_dirname ( vw_filename );
557 dirpath = g_get_current_dir(); // Fallback - if here then probably can't create the correct path
560 if ( g_path_is_absolute ( dirpath ) )
561 full = g_strconcat ( dirpath, G_DIR_SEPARATOR_S, filename, NULL );
563 full = g_strconcat ( g_get_current_dir(), G_DIR_SEPARATOR_S, dirpath, G_DIR_SEPARATOR_S, filename, NULL );
565 canonical = file_realpath_dup ( full ); // resolved
573 static struct kdtree *kd = NULL;
577 * @dir: The directory from which to load the latlontz.txt file
579 * Returns: The number of elements within the latlontz.txt loaded
581 static gint load_ll_tz_dir ( const gchar *dir )
584 gchar *lltz = g_build_filename ( dir, "latlontz.txt", NULL );
585 if ( g_access(lltz, R_OK) == 0 ) {
588 FILE *ff = g_fopen ( lltz, "r" );
590 while ( fgets ( buffer, 4096, ff ) ) {
592 gchar **components = g_strsplit (buffer, " ", 3);
593 guint nn = g_strv_length ( components );
595 double pt[2] = { g_ascii_strtod (components[0], NULL), g_ascii_strtod (components[1], NULL) };
596 gchar *timezone = g_strchomp ( components[2] );
597 if ( kd_insert ( kd, pt, timezone ) )
598 g_critical ( "Insertion problem of %s for line %ld of latlontz.txt", timezone, line_num );
601 // NB Don't free timezone as it's part of the kdtree data now
602 g_free ( components[0] );
603 g_free ( components[1] );
605 g_warning ( "Line %ld of latlontz.txt does not have 3 parts", line_num );
607 g_free ( components );
612 g_warning ( "%s: Could not open %s", __FUNCTION__, lltz);
621 * vu_setup_lat_lon_tz_lookup:
623 * Can be called multiple times but only initializes the lookup once
625 void vu_setup_lat_lon_tz_lookup ()
633 // Look in the directories of data path
634 gchar **data_dirs = a_get_viking_data_path();
636 // Process directories in reverse order for priority
637 guint n_data_dirs = g_strv_length ( data_dirs );
638 for (; n_data_dirs > 0; n_data_dirs--) {
639 loaded += load_ll_tz_dir(data_dirs[n_data_dirs-1]);
641 g_strfreev ( data_dirs );
643 g_debug ( "%s: Loaded %d elements", __FUNCTION__, loaded );
645 g_critical ( "%s: No lat/lon/timezones loaded", __FUNCTION__ );
649 * vu_finalize_lat_lon_tz_lookup:
651 * Clear memory used by the lookup.
652 * only call on program exit
654 void vu_finalize_lat_lon_tz_lookup ()
657 kd_data_destructor ( kd, g_free );
662 static double dist_sq( double *a1, double *a2, int dims ) {
663 double dist_sq = 0, diff;
664 while( --dims >= 0 ) {
665 diff = (a1[dims] - a2[dims]);
666 dist_sq += diff*diff;
671 static gchar* time_string_adjusted ( time_t *time, gint offset_s )
673 time_t *mytime = time;
674 *mytime = *mytime + offset_s;
675 gchar *str = g_malloc ( 64 );
676 // Append asterisks to indicate use of simplistic model (i.e. no TZ)
677 strftime ( str, 64, "%a %X %x **", gmtime(mytime) );
681 static gchar* time_string_tz ( time_t *time, const gchar *format, GTimeZone *tz )
683 GDateTime *utc = g_date_time_new_from_unix_utc (*time);
684 GDateTime *local = g_date_time_to_timezone ( utc, tz );
686 g_date_time_unref ( utc );
689 gchar *str = g_date_time_format ( local, format );
691 g_date_time_unref ( local );
692 g_date_time_unref ( utc );
696 #define VIK_SETTINGS_NEAREST_TZ_FACTOR "utils_nearest_tz_factor"
698 * vu_get_tz_at_location:
700 * @vc: Position for which the time zone is desired
702 * Returns: TimeZone string of the nearest known location. String may be NULL.
704 * Use the k-d tree method (http://en.wikipedia.org/wiki/Kd-tree) to quickly retreive
705 * the nearest location to the given position.
707 gchar* vu_get_tz_at_location ( const VikCoord* vc )
714 vik_coord_to_latlon ( vc, &ll );
715 double pt[2] = { ll.lat, ll.lon };
718 if ( !a_settings_get_double(VIK_SETTINGS_NEAREST_TZ_FACTOR, &nearest) )
721 struct kdres *presults = kd_nearest_range ( kd, pt, nearest );
722 while( !kd_res_end( presults ) ) {
724 gchar *ans = (gchar*)kd_res_item ( presults, pos );
725 // compute the distance of the current result from the pt
726 double dist = sqrt( dist_sq( pt, pos, 2 ) );
727 if ( dist < nearest ) {
728 //printf( "NEARER node at (%.3f, %.3f, %.3f) is %.3f away is %s\n", pos[0], pos[1], pos[2], dist, ans );
732 kd_res_next ( presults );
734 g_debug ( "TZ lookup found %d results - picked %s", kd_res_size(presults), tz );
735 kd_res_free ( presults );
741 * vu_get_time_string:
743 * @time_t: The time of which the string is wanted
744 * @format The format of the time string - such as "%c"
745 * @vc: Position of object for the time output - maybe NULL
746 * (only applicable for VIK_TIME_REF_WORLD)
747 * @tz: TimeZone string - maybe NULL.
748 * (only applicable for VIK_TIME_REF_WORLD)
749 * Useful to pass in the cached value from vu_get_tz_at_location() to save looking it up again for the same position
751 * Returns: A string of the time according to the time display property
753 gchar* vu_get_time_string ( time_t *time, const gchar *format, const VikCoord* vc, const gchar *tz )
755 if ( !format ) return NULL;
757 switch ( a_vik_get_time_ref_frame() ) {
758 case VIK_TIME_REF_UTC:
759 str = g_malloc ( 64 );
760 strftime ( str, 64, format, gmtime(time) ); // Always 'GMT'
762 case VIK_TIME_REF_WORLD:
764 // No timezone specified so work it out
765 gchar *mytz = vu_get_tz_at_location ( vc );
767 GTimeZone *gtz = g_time_zone_new ( mytz );
768 str = time_string_tz ( time, format, gtz );
769 g_time_zone_unref ( gtz );
772 // No results (e.g. could be in the middle of a sea)
773 // Fallback to simplistic method that doesn't take into account Timezones of countries.
775 vik_coord_to_latlon ( vc, &ll );
776 str = time_string_adjusted ( time, round ( ll.lon / 15.0 ) * 3600 );
780 // Use specified timezone
781 GTimeZone *gtz = g_time_zone_new ( tz );
782 str = time_string_tz ( time, format, gtz );
783 g_time_zone_unref ( gtz );
786 default: // VIK_TIME_REF_LOCALE
787 str = g_malloc ( 64 );
788 strftime ( str, 64, format, localtime(time) );
797 * Apply any startup values that have been specified from the command line
798 * Values are defaulted in such a manner not to be applied when they haven't been specified
801 void vu_command_line ( VikWindow *vw, gdouble latitude, gdouble longitude, gint zoom_osm_level, gint map_id )
806 VikViewport *vvp = vik_window_viewport(vw);
808 if ( latitude != 0.0 || longitude != 0.0 ) {
812 vik_viewport_set_center_latlon ( vvp, &ll, TRUE );
815 if ( zoom_osm_level >= 0 ) {
816 // Convert OSM zoom level into Viking zoom level
817 gdouble mpp = exp ( (17-zoom_osm_level) * log(2) );
820 vik_viewport_set_zoom ( vvp, mpp );
824 guint my_map_id = map_id;
825 if ( my_map_id == 0 )
826 my_map_id = vik_maps_layer_get_default_map_type ();
828 // Don't add map layer if one already exists
829 GList *vmls = vik_layers_panel_get_all_layers_of_type(vik_window_layers_panel(vw), VIK_LAYER_MAPS, TRUE);
830 int num_maps = g_list_length(vmls);
831 gboolean add_map = TRUE;
833 for (int i = 0; i < num_maps; i++) {
834 VikMapsLayer *vml = (VikMapsLayer*)(vmls->data);
835 gint id = vik_maps_layer_get_map_type(vml);
836 if ( my_map_id == id ) {
844 VikMapsLayer *vml = VIK_MAPS_LAYER ( vik_layer_create(VIK_LAYER_MAPS, vvp, FALSE) );
845 vik_maps_layer_set_map_type ( vml, my_map_id );
846 vik_layer_rename ( VIK_LAYER(vml), _("Map") );
847 vik_aggregate_layer_add_layer ( vik_layers_panel_get_top_layer(vik_window_layers_panel(vw)), VIK_LAYER(vml), TRUE );
848 vik_layer_emit_update ( VIK_LAYER(vml) );
854 * Copy the displayed text of a widget (should be a GtkButton ATM)
856 static void vu_copy_label ( GtkWidget *widget )
858 a_clipboard_copy (VIK_CLIPBOARD_DATA_TEXT, 0, 0, 0, gtk_button_get_label(GTK_BUTTON(widget)), NULL );
862 * Generate a single entry menu to allow copying the displayed text of a widget (should be a GtkButton ATM)
864 void vu_copy_label_menu ( GtkWidget *widget, guint button )
866 GtkWidget *menu = gtk_menu_new();
867 GtkWidget *item = gtk_image_menu_item_new_from_stock ( GTK_STOCK_COPY, NULL );
868 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(vu_copy_label), widget );
869 gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
870 gtk_widget_show ( item );
871 gtk_menu_popup ( GTK_MENU(menu), NULL, NULL, NULL, NULL, button, gtk_get_current_event_time() );