* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
+/*
+ * Dependencies in this file can be on anything.
+ * For functions with simple system dependencies put it in util.c
+ */
#include <math.h>
+#include <glib/gstdio.h>
#include <glib/gi18n.h>
+#include <gtk/gtk.h>
#include "viking.h"
#include "vikutils.h"
+#include "globals.h"
+#include "download.h"
+#include "preferences.h"
+#include "vikmapslayer.h"
+#include "settings.h"
+#include "ui_util.h"
+#include "dir.h"
+#include "misc/kdtree.h"
#define FMT_MAX_NUMBER_CODES 9
* @trkpt: The trackpoint for which the message is generated about
* @trkpt_prev: A trackpoint (presumed previous) for interpolating values with the other trackpoint (such as speed)
* @trk: The track in which the trackpoints reside
+ * @climb: Vertical speed (Out of band (i.e. not in a trackpoint) value for display currently only for GPSD usage)
*
* TODO: One day replace this cryptic format code with some kind of tokenizer parsing
* thus would make it more user friendly and maybe even GUI controlable.
* However for now at least there is some semblance of user control
*/
-gchar* vu_trackpoint_formatted_message ( gchar *format_code, VikTrackpoint *trkpt, VikTrackpoint *trkpt_prev, VikTrack *trk )
+gchar* vu_trackpoint_formatted_message ( gchar *format_code, VikTrackpoint *trkpt, VikTrackpoint *trkpt_prev, VikTrack *trk, gdouble climb )
{
if ( !trkpt )
return NULL;
case 'S': {
gdouble speed = 0.0;
gchar *speedtype = NULL;
- if ( !isnan(trkpt->speed) && trkpt_prev ) {
+ if ( isnan(trkpt->speed) && trkpt_prev ) {
if ( trkpt->has_timestamp && trkpt_prev->has_timestamp ) {
- if ( trkpt->timestamp == trkpt_prev->timestamp ) {
+ if ( trkpt->timestamp != trkpt_prev->timestamp ) {
// Work out from previous trackpoint location and time difference
speed = vik_coord_diff(&(trkpt->coord), &(trkpt_prev->coord)) / ABS(trkpt->timestamp - trkpt_prev->timestamp);
-
- switch (speed_units) {
- case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
- speed = VIK_MPS_TO_KPH(speed);
- break;
- case VIK_UNITS_SPEED_MILES_PER_HOUR:
- speed = VIK_MPS_TO_MPH(speed);
- break;
- case VIK_UNITS_SPEED_KNOTS:
- speed = VIK_MPS_TO_KNOTS(speed);
- break;
- default:
- // VIK_UNITS_SPEED_METRES_PER_SECOND:
- // Already in m/s so nothing to do
- break;
- }
speedtype = g_strdup ( "*" ); // Interpolated
}
else
speed = trkpt->speed;
speedtype = g_strdup ( "" );
}
+ switch (speed_units) {
+ case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
+ speed = VIK_MPS_TO_KPH(speed);
+ break;
+ case VIK_UNITS_SPEED_MILES_PER_HOUR:
+ speed = VIK_MPS_TO_MPH(speed);
+ break;
+ case VIK_UNITS_SPEED_KNOTS:
+ speed = VIK_MPS_TO_KNOTS(speed);
+ break;
+ default:
+ // VIK_UNITS_SPEED_METRES_PER_SECOND:
+ // Already in m/s so nothing to do
+ break;
+ }
values[i] = g_strdup_printf ( _("%sSpeed%s %.1f%s"), separator, speedtype, speed, speed_units_str );
g_free ( speedtype );
break;
}
+ case 'B': {
+ gdouble speed = 0.0;
+ gchar *speedtype = NULL;
+ if ( isnan(climb) && trkpt_prev ) {
+ if ( trkpt->has_timestamp && trkpt_prev->has_timestamp ) {
+ if ( trkpt->timestamp != trkpt_prev->timestamp ) {
+ // Work out from previous trackpoint altitudes and time difference
+ // 'speed' can be negative if going downhill
+ speed = (trkpt->altitude - trkpt_prev->altitude) / ABS(trkpt->timestamp - trkpt_prev->timestamp);
+ speedtype = g_strdup ( "*" ); // Interpolated
+ }
+ else
+ speedtype = g_strdup ( "**" ); // Unavailable
+ }
+ else
+ speedtype = g_strdup ( "**" );
+ }
+ else {
+ speed = climb;
+ speedtype = g_strdup ( "" );
+ }
+ switch (speed_units) {
+ case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
+ speed = VIK_MPS_TO_KPH(speed);
+ break;
+ case VIK_UNITS_SPEED_MILES_PER_HOUR:
+ speed = VIK_MPS_TO_MPH(speed);
+ break;
+ case VIK_UNITS_SPEED_KNOTS:
+ speed = VIK_MPS_TO_KNOTS(speed);
+ break;
+ default:
+ // VIK_UNITS_SPEED_METRES_PER_SECOND:
+ // Already in m/s so nothing to do
+ break;
+ }
+ // Go for 2dp as expect low values for vertical speeds
+ values[i] = g_strdup_printf ( _("%sClimb%s %.2f%s"), separator, speedtype, speed, speed_units_str );
+ g_free ( speedtype );
+ break;
+ }
+
case 'A': {
vik_units_height_t height_units = a_vik_get_units_height ();
switch (height_units) {
// expect the difference between track points to be small hence use metres or yards
switch (dist_units) {
case VIK_UNITS_DISTANCE_MILES:
+ case VIK_UNITS_DISTANCE_NAUTICAL_MILES:
dist_units_str = g_strdup ( _("yards") );
break;
default:
}
case 'T': {
- gchar tmp[64];
- tmp[0] = '\0';
+ gchar *msg;
if ( trkpt->has_timestamp ) {
// Compact date time format
- strftime (tmp, sizeof(tmp), "%x %X", localtime(&(trkpt->timestamp)));
+ msg = vu_get_time_string ( &(trkpt->timestamp), "%x %X", &(trkpt->coord), NULL );
}
else
- g_snprintf (tmp, sizeof(tmp), "--");
- values[i] = g_strdup_printf ( _("%sTime %s"), separator, tmp );
+ msg = g_strdup ("--");
+ values[i] = g_strdup_printf ( _("%sTime %s"), separator, msg );
+ g_free ( msg );
break;
}
case 'X': values[i] = g_strdup_printf ( _("%sNo. of Sats %d"), separator, trkpt->nsats ); break;
+ case 'F': {
+ if ( trk ) {
+ // Distance to the end 'Finish' (along the track)
+ gdouble distd = vik_track_get_length_to_trackpoint (trk, trkpt);
+ gdouble diste = vik_track_get_length_including_gaps ( trk );
+ gdouble dist = diste - distd;
+ gchar *dist_units_str = NULL;
+ vik_units_distance_t dist_units = a_vik_get_units_distance ();
+ switch (dist_units) {
+ case VIK_UNITS_DISTANCE_MILES:
+ dist_units_str = g_strdup ( _("miles") );
+ dist = VIK_METERS_TO_MILES(dist);
+ break;
+ case VIK_UNITS_DISTANCE_NAUTICAL_MILES:
+ dist_units_str = g_strdup ( _("NM") );
+ dist = VIK_METERS_TO_NAUTICAL_MILES(dist);
+ break;
+ default:
+ // VIK_UNITS_DISTANCE_KILOMETRES:
+ dist_units_str = g_strdup ( _("km") );
+ dist = dist / 1000.0;
+ break;
+ }
+ values[i] = g_strdup_printf ( _("%sTo End %.2f%s"), separator, dist, dist_units_str );
+ g_free ( dist_units_str );
+ }
+ break;
+ }
+
case 'D': {
if ( trk ) {
// Distance from start (along the track)
gdouble distd = vik_track_get_length_to_trackpoint (trk, trkpt);
gchar *dist_units_str = NULL;
vik_units_distance_t dist_units = a_vik_get_units_distance ();
- // expect the difference between track points to be small hence use metres or yards
switch (dist_units) {
case VIK_UNITS_DISTANCE_MILES:
dist_units_str = g_strdup ( _("miles") );
distd = VIK_METERS_TO_MILES(distd);
break;
+ case VIK_UNITS_DISTANCE_NAUTICAL_MILES:
+ dist_units_str = g_strdup ( _("NM") );
+ distd = VIK_METERS_TO_NAUTICAL_MILES(distd);
+ break;
default:
// VIK_UNITS_DISTANCE_KILOMETRES:
dist_units_str = g_strdup ( _("km") );
}
case 'N': // Name of track
- values[i] = g_strdup_printf ( _("%sTrack: %s"), separator, trk->name );
+ if ( trk )
+ values[i] = g_strdup_printf ( _("%sTrack: %s"), separator, trk->name );
+ break;
+
+ case 'E': // Name of trackpoint if available
+ if ( trkpt->name )
+ values[i] = g_strdup_printf ( "%s%s", separator, trkpt->name );
+ else
+ values[i] = g_strdup ( "" );
break;
default:
return msg;
}
+
+typedef struct {
+ GtkWindow *window; // Layer needed for redrawing
+ gchar *version; // Image list
+} new_version_thread_data;
+
+static gboolean new_version_available_message ( new_version_thread_data *nvtd )
+{
+ // Only a simple goto website option is offered
+ // Trying to do an installation update is platform specific
+ if ( a_dialog_yes_or_no ( nvtd->window,
+ _("There is a newer version of Viking available: %s\n\nDo you wish to go to Viking's website now?"), nvtd->version ) )
+ // NB 'VIKING_URL' redirects to the Wiki, here we want to go the main site.
+ open_url ( nvtd->window, "http://sourceforge.net/projects/viking/" );
+
+ g_free ( nvtd->version );
+ g_free ( nvtd );
+ return FALSE;
+}
+
+#define VIK_SETTINGS_VERSION_CHECKED_DATE "version_checked_date"
+
+static void latest_version_thread ( GtkWindow *window )
+{
+ // Need to allow a few redirects, as SF file is often served from different server
+ DownloadFileOptions options = { FALSE, FALSE, NULL, 5, NULL, NULL, NULL };
+ gchar *filename = a_download_uri_to_tmp_file ( "http://sourceforge.net/projects/viking/files/VERSION", &options );
+ //gchar *filename = g_strdup ( "VERSION" );
+ if ( !filename ) {
+ return;
+ }
+
+ GMappedFile *mf = g_mapped_file_new ( filename, FALSE, NULL );
+ if ( !mf )
+ return;
+
+ gchar *text = g_mapped_file_get_contents ( mf );
+
+ gint latest_version = viking_version_to_number ( text );
+ gint my_version = viking_version_to_number ( VIKING_VERSION );
+
+ g_debug ( "The lastest version is: %s", text );
+
+ if ( my_version < latest_version ) {
+ new_version_thread_data *nvtd = g_malloc ( sizeof(new_version_thread_data) );
+ nvtd->window = window;
+ nvtd->version = g_strdup ( text );
+ gdk_threads_add_idle ( (GSourceFunc) new_version_available_message, nvtd );
+ }
+ else
+ g_debug ( "Running the lastest version: %s", VIKING_VERSION );
+
+ g_mapped_file_unref ( mf );
+ if ( filename ) {
+ g_remove ( filename );
+ g_free ( filename );
+ }
+
+ // Update last checked time
+ GTimeVal time;
+ g_get_current_time ( &time );
+ a_settings_set_string ( VIK_SETTINGS_VERSION_CHECKED_DATE, g_time_val_to_iso8601(&time) );
+}
+
+#define VIK_SETTINGS_VERSION_CHECK_PERIOD "version_check_period_days"
+
+/**
+ * vu_check_latest_version:
+ * @window: Somewhere where we may need use the display to inform the user about the version status
+ *
+ * Periodically checks the released latest VERSION file on the website to compare with the running version
+ *
+ */
+void vu_check_latest_version ( GtkWindow *window )
+{
+ if ( ! a_vik_get_check_version () )
+ return;
+
+ gboolean do_check = FALSE;
+
+ gint check_period;
+ if ( ! a_settings_get_integer ( VIK_SETTINGS_VERSION_CHECK_PERIOD, &check_period ) ) {
+ check_period = 14;
+ }
+
+ // Get last checked date...
+ GDate *gdate_last = g_date_new();
+ GDate *gdate_now = g_date_new();
+ GTimeVal time_last;
+ gchar *last_checked_date = NULL;
+
+ // When no previous date available - set to do the version check
+ if ( a_settings_get_string ( VIK_SETTINGS_VERSION_CHECKED_DATE, &last_checked_date) ) {
+ if ( g_time_val_from_iso8601 ( last_checked_date, &time_last ) ) {
+ g_date_set_time_val ( gdate_last, &time_last );
+ }
+ else
+ do_check = TRUE;
+ }
+ else
+ do_check = TRUE;
+
+ GTimeVal time_now;
+ g_get_current_time ( &time_now );
+ g_date_set_time_val ( gdate_now, &time_now );
+
+ if ( ! do_check ) {
+ // Dates available so do the comparison
+ g_date_add_days ( gdate_last, check_period );
+ if ( g_date_compare ( gdate_last, gdate_now ) < 0 )
+ do_check = TRUE;
+ }
+
+ g_date_free ( gdate_last );
+ g_date_free ( gdate_now );
+
+ if ( do_check ) {
+#if GLIB_CHECK_VERSION (2, 32, 0)
+ g_thread_try_new ( "latest_version_thread", (GThreadFunc)latest_version_thread, window, NULL );
+#else
+ g_thread_create ( (GThreadFunc)latest_version_thread, window, FALSE, NULL );
+#endif
+ }
+}
+
+/**
+ * vu_set_auto_features_on_first_run:
+ *
+ * Ask the user's opinion to set some of Viking's default behaviour
+ */
+void vu_set_auto_features_on_first_run ( void )
+{
+ gboolean auto_features = FALSE;
+ gboolean set_defaults = FALSE;
+
+ if ( a_vik_very_first_run () ) {
+
+ GtkWidget *win = gtk_window_new ( GTK_WINDOW_TOPLEVEL );
+
+ if ( a_dialog_yes_or_no ( GTK_WINDOW(win),
+ _("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 ) )
+ auto_features = TRUE;
+
+ // Default to more standard cache layout for new users (well new installs at least)
+ maps_layer_set_cache_default ( VIK_MAPS_CACHE_LAYOUT_OSM );
+ set_defaults = TRUE;
+ }
+
+ if ( auto_features ) {
+ // Set Maps to autodownload
+ // Ensure the default is true
+ maps_layer_set_autodownload_default ( TRUE );
+ set_defaults = TRUE;
+
+ // Simplistic repeat of preference settings
+ // Only the name & type are important for setting a preference via this 'external' way
+
+ // Enable auto add map +
+ // Enable IP lookup
+ 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, }, };
+ 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}, };
+
+ VikLayerParamData vlp_data;
+ vlp_data.b = TRUE;
+ a_preferences_run_setparam ( vlp_data, pref_add_map );
+
+ vlp_data.u = VIK_STARTUP_METHOD_AUTO_LOCATION;
+ a_preferences_run_setparam ( vlp_data, pref_startup_method );
+
+ // Only on Windows make checking for the latest version on by default
+ // For other systems it's expected a Package manager or similar controls the installation, so leave it off
+#ifdef WINDOWS
+ 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, }, };
+ vlp_data.b = TRUE;
+ a_preferences_run_setparam ( vlp_data, pref_startup_version_check );
+#endif
+
+ // Ensure settings are saved for next time
+ a_preferences_save_to_file ();
+ }
+
+ // Ensure defaults are saved if changed
+ if ( set_defaults )
+ a_layer_defaults_save ();
+}
+
+/**
+ * vu_get_canonical_filename:
+ *
+ * Returns: Canonical absolute filename
+ *
+ * Any time a path may contain a relative component, so need to prepend that directory it is relative to
+ * Then resolve the full path to get the normal canonical filename
+ */
+gchar *vu_get_canonical_filename ( VikLayer *vl, const gchar *filename )
+{
+ gchar *canonical = NULL;
+ if ( !filename )
+ return NULL;
+
+ if ( g_path_is_absolute ( filename ) )
+ canonical = g_strdup ( filename );
+ else {
+ const gchar *vw_filename = vik_window_get_filename ( VIK_WINDOW_FROM_WIDGET (vl->vvp) );
+ gchar *dirpath = NULL;
+ if ( vw_filename )
+ dirpath = g_path_get_dirname ( vw_filename );
+ else
+ dirpath = g_get_current_dir(); // Fallback - if here then probably can't create the correct path
+
+ gchar *full = NULL;
+ if ( g_path_is_absolute ( dirpath ) )
+ full = g_strconcat ( dirpath, G_DIR_SEPARATOR_S, filename, NULL );
+ else
+ full = g_strconcat ( g_get_current_dir(), G_DIR_SEPARATOR_S, dirpath, G_DIR_SEPARATOR_S, filename, NULL );
+
+ canonical = file_realpath_dup ( full ); // resolved
+ g_free ( full );
+ g_free ( dirpath );
+ }
+
+ return canonical;
+}
+
+static struct kdtree *kd = NULL;
+
+/**
+ * load_ll_tz_dir
+ * @dir: The directory from which to load the latlontz.txt file
+ *
+ * Returns: The number of elements within the latlontz.txt loaded
+ */
+static gint load_ll_tz_dir ( const gchar *dir )
+{
+ gint inserted = 0;
+ gchar *lltz = g_build_filename ( dir, "latlontz.txt", NULL );
+ if ( g_access(lltz, R_OK) == 0 ) {
+ gchar buffer[4096];
+ long line_num = 0;
+ FILE *ff = g_fopen ( lltz, "r" );
+ if ( ff ) {
+ while ( fgets ( buffer, 4096, ff ) ) {
+ line_num++;
+ gchar **components = g_strsplit (buffer, " ", 3);
+ guint nn = g_strv_length ( components );
+ if ( nn == 3 ) {
+ double pt[2] = { g_ascii_strtod (components[0], NULL), g_ascii_strtod (components[1], NULL) };
+ gchar *timezone = g_strchomp ( components[2] );
+ if ( kd_insert ( kd, pt, timezone ) )
+ g_critical ( "Insertion problem of %s for line %ld of latlontz.txt", timezone, line_num );
+ else
+ inserted++;
+ // NB Don't free timezone as it's part of the kdtree data now
+ g_free ( components[0] );
+ g_free ( components[1] );
+ } else {
+ g_warning ( "Line %ld of latlontz.txt does not have 3 parts", line_num );
+ }
+ g_free ( components );
+ }
+ fclose ( ff );
+ }
+ else {
+ g_warning ( "%s: Could not open %s", __FUNCTION__, lltz);
+ }
+ }
+ g_free ( lltz );
+
+ return inserted;
+}
+
+/**
+ * vu_setup_lat_lon_tz_lookup:
+ *
+ * Can be called multiple times but only initializes the lookup once
+ */
+void vu_setup_lat_lon_tz_lookup ()
+{
+ // Only setup once
+ if ( kd )
+ return;
+
+ kd = kd_create(2);
+
+ // Look in the directories of data path
+ gchar **data_dirs = a_get_viking_data_path();
+ guint loaded = 0;
+ // Process directories in reverse order for priority
+ guint n_data_dirs = g_strv_length ( data_dirs );
+ for (; n_data_dirs > 0; n_data_dirs--) {
+ loaded += load_ll_tz_dir(data_dirs[n_data_dirs-1]);
+ }
+ g_strfreev ( data_dirs );
+
+ g_debug ( "%s: Loaded %d elements", __FUNCTION__, loaded );
+ if ( loaded == 0 )
+ g_critical ( "%s: No lat/lon/timezones loaded", __FUNCTION__ );
+}
+
+/**
+ * vu_finalize_lat_lon_tz_lookup:
+ *
+ * Clear memory used by the lookup.
+ * only call on program exit
+ */
+void vu_finalize_lat_lon_tz_lookup ()
+{
+ if ( kd ) {
+ kd_data_destructor ( kd, g_free );
+ kd_free ( kd );
+ }
+}
+
+static double dist_sq( double *a1, double *a2, int dims ) {
+ double dist_sq = 0, diff;
+ while( --dims >= 0 ) {
+ diff = (a1[dims] - a2[dims]);
+ dist_sq += diff*diff;
+ }
+ return dist_sq;
+}
+
+static gchar* time_string_adjusted ( time_t *time, gint offset_s )
+{
+ time_t *mytime = time;
+ *mytime = *mytime + offset_s;
+ gchar *str = g_malloc ( 64 );
+ // Append asterisks to indicate use of simplistic model (i.e. no TZ)
+ strftime ( str, 64, "%a %X %x **", gmtime(mytime) );
+ return str;
+}
+
+static gchar* time_string_tz ( time_t *time, const gchar *format, GTimeZone *tz )
+{
+ GDateTime *utc = g_date_time_new_from_unix_utc (*time);
+ if ( !utc ) {
+ g_warning ( "%s: result from g_date_time_new_from_unix_utc() is NULL", __FUNCTION__ );
+ return NULL;
+ }
+ GDateTime *local = g_date_time_to_timezone ( utc, tz );
+ if ( !local ) {
+ g_date_time_unref ( utc );
+ g_warning ( "%s: result from g_date_time_to_timezone() is NULL", __FUNCTION__ );
+ return NULL;
+ }
+ gchar *str = g_date_time_format ( local, format );
+
+ g_date_time_unref ( local );
+ g_date_time_unref ( utc );
+ return str;
+}
+
+#define VIK_SETTINGS_NEAREST_TZ_FACTOR "utils_nearest_tz_factor"
+/**
+ * vu_get_tz_at_location:
+ *
+ * @vc: Position for which the time zone is desired
+ *
+ * Returns: TimeZone string of the nearest known location. String may be NULL.
+ *
+ * Use the k-d tree method (http://en.wikipedia.org/wiki/Kd-tree) to quickly retreive
+ * the nearest location to the given position.
+ */
+gchar* vu_get_tz_at_location ( const VikCoord* vc )
+{
+ gchar *tz = NULL;
+ if ( !vc || !kd )
+ return tz;
+
+ struct LatLon ll;
+ vik_coord_to_latlon ( vc, &ll );
+ double pt[2] = { ll.lat, ll.lon };
+
+ gdouble nearest;
+ if ( !a_settings_get_double(VIK_SETTINGS_NEAREST_TZ_FACTOR, &nearest) )
+ nearest = 1.0;
+
+ struct kdres *presults = kd_nearest_range ( kd, pt, nearest );
+ while( !kd_res_end( presults ) ) {
+ double pos[2];
+ gchar *ans = (gchar*)kd_res_item ( presults, pos );
+ // compute the distance of the current result from the pt
+ double dist = sqrt( dist_sq( pt, pos, 2 ) );
+ if ( dist < nearest ) {
+ //printf( "NEARER node at (%.3f, %.3f, %.3f) is %.3f away is %s\n", pos[0], pos[1], pos[2], dist, ans );
+ nearest = dist;
+ tz = ans;
+ }
+ kd_res_next ( presults );
+ }
+ g_debug ( "TZ lookup found %d results - picked %s", kd_res_size(presults), tz );
+ kd_res_free ( presults );
+
+ return tz;
+}
+
+/**
+ * vu_get_time_string:
+ *
+ * @time_t: The time of which the string is wanted
+ * @format The format of the time string - such as "%c"
+ * @vc: Position of object for the time output - maybe NULL
+ * (only applicable for VIK_TIME_REF_WORLD)
+ * @tz: TimeZone string - maybe NULL.
+ * (only applicable for VIK_TIME_REF_WORLD)
+ * Useful to pass in the cached value from vu_get_tz_at_location() to save looking it up again for the same position
+ *
+ * Returns: A string of the time according to the time display property
+ */
+gchar* vu_get_time_string ( time_t *time, const gchar *format, const VikCoord* vc, const gchar *tz )
+{
+ if ( !format ) return NULL;
+ gchar *str = NULL;
+ switch ( a_vik_get_time_ref_frame() ) {
+ case VIK_TIME_REF_UTC:
+ str = g_malloc ( 64 );
+ strftime ( str, 64, format, gmtime(time) ); // Always 'GMT'
+ break;
+ case VIK_TIME_REF_WORLD:
+ if ( vc && !tz ) {
+ // No timezone specified so work it out
+ gchar *mytz = vu_get_tz_at_location ( vc );
+ if ( mytz ) {
+ GTimeZone *gtz = g_time_zone_new ( mytz );
+ str = time_string_tz ( time, format, gtz );
+ g_time_zone_unref ( gtz );
+ }
+ else {
+ // No results (e.g. could be in the middle of a sea)
+ // Fallback to simplistic method that doesn't take into account Timezones of countries.
+ struct LatLon ll;
+ vik_coord_to_latlon ( vc, &ll );
+ str = time_string_adjusted ( time, round ( ll.lon / 15.0 ) * 3600 );
+ }
+ }
+ else {
+ // Use specified timezone
+ GTimeZone *gtz = g_time_zone_new ( tz );
+ str = time_string_tz ( time, format, gtz );
+ g_time_zone_unref ( gtz );
+ }
+ break;
+ default: // VIK_TIME_REF_LOCALE
+ str = g_malloc ( 64 );
+ strftime ( str, 64, format, localtime(time) );
+ break;
+ }
+ return str;
+}
+
+/**
+ * vu_command_line:
+ *
+ * Apply any startup values that have been specified from the command line
+ * Values are defaulted in such a manner not to be applied when they haven't been specified
+ *
+ */
+void vu_command_line ( VikWindow *vw, gdouble latitude, gdouble longitude, gint zoom_osm_level, gint map_id )
+{
+ if ( !vw )
+ return;
+
+ VikViewport *vvp = vik_window_viewport(vw);
+
+ if ( latitude != 0.0 || longitude != 0.0 ) {
+ struct LatLon ll;
+ ll.lat = latitude;
+ ll.lon = longitude;
+ vik_viewport_set_center_latlon ( vvp, &ll, TRUE );
+ }
+
+ if ( zoom_osm_level >= 0 ) {
+ // Convert OSM zoom level into Viking zoom level
+ gdouble mpp = exp ( (17-zoom_osm_level) * log(2) );
+ if ( mpp > 1.0 )
+ mpp = round (mpp);
+ vik_viewport_set_zoom ( vvp, mpp );
+ }
+
+ if ( map_id >= 0 ) {
+ guint my_map_id = map_id;
+ if ( my_map_id == 0 )
+ my_map_id = vik_maps_layer_get_default_map_type ();
+
+ // Don't add map layer if one already exists
+ GList *vmls = vik_layers_panel_get_all_layers_of_type(vik_window_layers_panel(vw), VIK_LAYER_MAPS, TRUE);
+ int num_maps = g_list_length(vmls);
+ gboolean add_map = TRUE;
+
+ for (int i = 0; i < num_maps; i++) {
+ VikMapsLayer *vml = (VikMapsLayer*)(vmls->data);
+ gint id = vik_maps_layer_get_map_type(vml);
+ if ( my_map_id == id ) {
+ add_map = FALSE;
+ break;
+ }
+ vmls = vmls->next;
+ }
+
+ if ( add_map ) {
+ VikMapsLayer *vml = VIK_MAPS_LAYER ( vik_layer_create(VIK_LAYER_MAPS, vvp, FALSE) );
+ vik_maps_layer_set_map_type ( vml, my_map_id );
+ vik_layer_rename ( VIK_LAYER(vml), _("Map") );
+ vik_aggregate_layer_add_layer ( vik_layers_panel_get_top_layer(vik_window_layers_panel(vw)), VIK_LAYER(vml), TRUE );
+ vik_layer_emit_update ( VIK_LAYER(vml) );
+ }
+ }
+}
+
+/**
+ * Copy the displayed text of a widget (should be a GtkButton ATM)
+ */
+static void vu_copy_label ( GtkWidget *widget )
+{
+ a_clipboard_copy (VIK_CLIPBOARD_DATA_TEXT, 0, 0, 0, gtk_button_get_label(GTK_BUTTON(widget)), NULL );
+}
+
+/**
+ * Generate a single entry menu to allow copying the displayed text of a widget (should be a GtkButton ATM)
+ */
+void vu_copy_label_menu ( GtkWidget *widget, guint button )
+{
+ GtkWidget *menu = gtk_menu_new();
+ GtkWidget *item = gtk_image_menu_item_new_from_stock ( GTK_STOCK_COPY, NULL );
+ g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(vu_copy_label), widget );
+ gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
+ gtk_widget_show ( item );
+ gtk_menu_popup ( GTK_MENU(menu), NULL, NULL, NULL, NULL, button, gtk_get_current_event_time() );
+}
+
+/**
+ * Work out the best zoom level for the LatLon area and set the viewport to that zoom level
+ */
+void vu_zoom_to_show_latlons ( VikCoordMode mode, VikViewport *vvp, struct LatLon maxmin[2] )
+{
+ /* First set the center [in case previously viewing from elsewhere] */
+ /* Then loop through zoom levels until provided positions are in view */
+ /* This method is not particularly fast - but should work well enough */
+ struct LatLon average = { (maxmin[0].lat+maxmin[1].lat)/2, (maxmin[0].lon+maxmin[1].lon)/2 };
+ VikCoord coord;
+ vik_coord_load_from_latlon ( &coord, mode, &average );
+ vik_viewport_set_center_coord ( vvp, &coord, TRUE );
+
+ /* Convert into definite 'smallest' and 'largest' positions */
+ struct LatLon minmin;
+ if ( maxmin[0].lat < maxmin[1].lat )
+ minmin.lat = maxmin[0].lat;
+ else
+ minmin.lat = maxmin[1].lat;
+
+ struct LatLon maxmax;
+ if ( maxmin[0].lon > maxmin[1].lon )
+ maxmax.lon = maxmin[0].lon;
+ else
+ maxmax.lon = maxmin[1].lon;
+
+ /* Never zoom in too far - generally not that useful, as too close ! */
+ /* Always recalculate the 'best' zoom level */
+ gdouble zoom = 1.0;
+ vik_viewport_set_zoom ( vvp, zoom );
+
+ gdouble min_lat, max_lat, min_lon, max_lon;
+ /* Should only be a maximum of about 18 iterations from min to max zoom levels */
+ while ( zoom <= VIK_VIEWPORT_MAX_ZOOM ) {
+ vik_viewport_get_min_max_lat_lon ( vvp, &min_lat, &max_lat, &min_lon, &max_lon );
+ /* NB I think the logic used in this test to determine if the bounds is within view
+ fails if track goes across 180 degrees longitude.
+ Hopefully that situation is not too common...
+ Mind you viking doesn't really do edge locations to well anyway */
+ if ( min_lat < minmin.lat &&
+ max_lat > minmin.lat &&
+ min_lon < maxmax.lon &&
+ max_lon > maxmax.lon )
+ /* Found within zoom level */
+ break;
+
+ /* Try next */
+ zoom = zoom * 2;
+ vik_viewport_set_zoom ( vvp, zoom );
+ }
+}
projects / andy / viking.git / blobdiff