#include "vikgototool.h"
#include "vikgoto.h"
+/* Compatibility */
+#if ! GLIB_CHECK_VERSION(2,22,0)
+#define g_mapped_file_unref g_mapped_file_free
+#endif
+
static gchar *last_goto_str = NULL;
static VikCoord *last_coord = NULL;
static gchar *last_successful_goto_str = NULL;
}
}
+/**
+ * Setup last_goto_tool value
+ */
+static void get_provider ()
+{
+ // Use setting for the provider if available
+ if ( last_goto_tool < 0 ) {
+ find_entry = -1;
+ wanted_entry = -1;
+ gchar *provider = NULL;
+ if ( a_settings_get_string ( VIK_SETTINGS_GOTO_PROVIDER, &provider ) ) {
+ // Use setting
+ if ( provider )
+ g_list_foreach (goto_tools_list, find_provider, provider);
+ // If not found set it to the first entry, otherwise use the entry
+ last_goto_tool = ( wanted_entry < 0 ) ? 0 : wanted_entry;
+ }
+ else
+ last_goto_tool = 0;
+ }
+}
+
static gchar *a_prompt_for_goto_string(VikWindow *vw)
{
GtkWidget *dialog = NULL;
current = g_list_next (current);
}
- // Use setting for the provider if available
- if ( last_goto_tool < 0 ) {
- find_entry = -1;
- wanted_entry = -1;
- gchar *provider = NULL;
- if ( a_settings_get_string ( VIK_SETTINGS_GOTO_PROVIDER, &provider ) ) {
- // Use setting
- if ( provider )
- g_list_foreach (goto_tools_list, find_provider, provider);
- // If not found set it to the first entry, otherwise use the entry
- last_goto_tool = ( wanted_entry < 0 ) ? 0 : wanted_entry;
- }
- else
- last_goto_tool = 0;
- }
+ get_provider ();
gtk_combo_box_set_active ( GTK_COMBO_BOX( tool_list ), last_goto_tool );
GtkWidget *goto_label = gtk_label_new(_("Enter address or place name:"));
return NULL;
}
+ // TODO check if list is empty
last_goto_tool = gtk_combo_box_get_active ( GTK_COMBO_BOX(tool_list) );
gchar *provider = vik_goto_tool_get_label ( g_list_nth_data (goto_tools_list, last_goto_tool) );
a_settings_set_string ( VIK_SETTINGS_GOTO_PROVIDER, provider );
return(goto_str); /* goto_str needs to be freed by caller */
}
+/**
+ * Goto a place when we already have a string to search on
+ *
+ * Returns: %TRUE if a successful lookup
+ */
+static gboolean vik_goto_place ( VikWindow *vw, VikViewport *vvp, gchar* name, VikCoord *vcoord )
+{
+ // Ensure last_goto_tool is given a value
+ get_provider ();
+
+ if ( goto_tools_list ) {
+ VikGotoTool *gototool = g_list_nth_data ( goto_tools_list, last_goto_tool );
+ if ( gototool ) {
+ if ( vik_goto_tool_get_coord ( gototool, vw, vvp, name, vcoord ) == 0 )
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
void a_vik_goto(VikWindow *vw, VikViewport *vvp)
{
VikCoord new_center;
g_free(s_str);
} while (more);
}
+
+#define HOSTIP_LATITUDE_PATTERN "\"lat\":\""
+#define HOSTIP_LONGITUDE_PATTERN "\"lng\":\""
+#define HOSTIP_CITY_PATTERN "\"city\":\""
+#define HOSTIP_COUNTRY_PATTERN "\"country_name\":\""
+
+/**
+ * Automatic attempt to find out where you are using:
+ * 1. http://www.hostip.info ++
+ * 2. if not specific enough fallback to using the default goto tool with a country name
+ * ++ Using returned JSON information
+ * c.f. with googlesearch.c - similar implementation is used here
+ *
+ * returns:
+ * 0 if failed to locate anything
+ * 1 if exact latitude/longitude found
+ * 2 if position only as precise as a city
+ * 3 if position only as precise as a country
+ * @name: Contains the name of place found. Free this string after use.
+ */
+gint a_vik_goto_where_am_i ( VikViewport *vvp, struct LatLon *ll, gchar **name )
+{
+ gint result = 0;
+ *name = NULL;
+
+ gchar *tmpname = a_download_uri_to_tmp_file ( "http://api.hostip.info/get_json.php?position=true", NULL );
+ //gchar *tmpname = g_strdup ("../test/hostip2.json");
+ if (!tmpname) {
+ return result;
+ }
+
+ ll->lat = 0.0;
+ ll->lon = 0.0;
+
+ gchar *pat;
+ GMappedFile *mf;
+ gchar *ss;
+ gint fragment_len;
+
+ gchar lat_buf[32], lon_buf[32];
+ lat_buf[0] = lon_buf[0] = '\0';
+ gchar *country;
+ gchar *city;
+
+ if ((mf = g_mapped_file_new(tmpname, FALSE, NULL)) == NULL) {
+ g_critical(_("couldn't map temp file"));
+ goto tidy;
+ }
+
+ gsize len = g_mapped_file_get_length(mf);
+ gchar *text = g_mapped_file_get_contents(mf);
+
+ if ((pat = g_strstr_len(text, len, HOSTIP_COUNTRY_PATTERN))) {
+ pat += strlen(HOSTIP_COUNTRY_PATTERN);
+ fragment_len = 0;
+ ss = pat;
+ while (*pat != '"') {
+ fragment_len++;
+ pat++;
+ }
+ country = g_strndup(ss, fragment_len);
+ }
+
+ if ((pat = g_strstr_len(text, len, HOSTIP_CITY_PATTERN))) {
+ pat += strlen(HOSTIP_CITY_PATTERN);
+ fragment_len = 0;
+ ss = pat;
+ while (*pat != '"') {
+ fragment_len++;
+ pat++;
+ }
+ city = g_strndup(ss, fragment_len);
+ }
+
+ if ((pat = g_strstr_len(text, len, HOSTIP_LATITUDE_PATTERN))) {
+ pat += strlen(HOSTIP_LATITUDE_PATTERN);
+ ss = lat_buf;
+ if (*pat == '-')
+ *ss++ = *pat++;
+ while ((ss < (lat_buf + sizeof(lat_buf))) && (pat < (text + len)) &&
+ (g_ascii_isdigit(*pat) || (*pat == '.')))
+ *ss++ = *pat++;
+ *ss = '\0';
+ ll->lat = g_ascii_strtod(lat_buf, NULL);
+ }
+
+ if ((pat = g_strstr_len(text, len, HOSTIP_LONGITUDE_PATTERN))) {
+ pat += strlen(HOSTIP_LONGITUDE_PATTERN);
+ ss = lon_buf;
+ if (*pat == '-')
+ *ss++ = *pat++;
+ while ((ss < (lon_buf + sizeof(lon_buf))) && (pat < (text + len)) &&
+ (g_ascii_isdigit(*pat) || (*pat == '.')))
+ *ss++ = *pat++;
+ *ss = '\0';
+ ll->lon = g_ascii_strtod(lon_buf, NULL);
+ }
+
+ if ( ll->lat != 0.0 && ll->lon != 0.0 ) {
+ if ( ll->lat > -90.0 && ll->lat < 90.0 && ll->lon > -180.0 && ll->lon < 180.0 ) {
+ // Found a 'sensible' & 'precise' location
+ result = 1;
+ *name = g_strdup ( _("Locality") ); //Albeit maybe not known by an actual name!
+ }
+ }
+ else {
+ // Hopefully city name is unique enough to lookup position on
+ // Maybe for American places where hostip appends the State code on the end
+ // But if the country code is not appended if could easily get confused
+ // e.g. 'Portsmouth' could be at least
+ // Portsmouth, Hampshire, UK or
+ // Portsmouth, Viginia, USA.
+
+ // Try city name lookup
+ if ( city ) {
+ g_debug ( "%s: found city %s", __FUNCTION__, city );
+ if ( strcmp ( city, "(Unknown city)" ) != 0 ) {
+ VikCoord new_center;
+ if ( vik_goto_place ( NULL, vvp, city, &new_center ) ) {
+ // Got something
+ vik_coord_to_latlon ( &new_center, ll );
+ result = 2;
+ *name = city;
+ goto tidy;
+ }
+ }
+ }
+
+ // Try country name lookup
+ if ( country ) {
+ g_debug ( "%s: found country %s", __FUNCTION__, country );
+ if ( strcmp ( country, "(Unknown Country)" ) != 0 ) {
+ VikCoord new_center;
+ if ( vik_goto_place ( NULL, vvp, country, &new_center ) ) {
+ // Finally got something
+ vik_coord_to_latlon ( &new_center, ll );
+ result = 3;
+ *name = country;
+ goto tidy;
+ }
+ }
+ }
+ }
+
+ tidy:
+ g_mapped_file_unref ( mf );
+ g_remove ( tmpname );
+ g_free ( tmpname );
+ return result;
+}
gchar *filename;
gboolean modified;
+ VikLoadType_t loaded_type;
GtkWidget *open_dia, *save_dia;
GtkWidget *save_img_dia, *save_img_dir_dia;
return NULL;
}
+/**
+ * determine_location_thread:
+ * @vw: The window that will get updated
+ * @threaddata: Data used by our background thread mechanism
+ *
+ * Use the features in vikgoto to determine where we are
+ * Then set up the viewport:
+ * 1. To goto the location
+ * 2. Set an appropriate level zoom for the location type
+ * 3. Some statusbar message feedback
+ */
+static int determine_location_thread ( VikWindow *vw, gpointer threaddata )
+{
+ struct LatLon ll;
+ gchar *name = NULL;
+ gint ans = a_vik_goto_where_am_i ( vw->viking_vvp, &ll, &name );
+
+ int result = a_background_thread_progress ( threaddata, 1.0 );
+ if ( result != 0 ) {
+ vik_window_statusbar_update ( vw, _("Location lookup aborted"), VIK_STATUSBAR_INFO );
+ return -1; /* Abort thread */
+ }
+
+ if ( ans ) {
+ // Zoom out a little
+ gdouble zoom = 16.0;
+
+ if ( ans == 2 ) {
+ // Position found with city precision - so zoom out more
+ zoom = 128.0;
+ }
+ else if ( ans == 3 ) {
+ // Position found via country name search - so zoom wayyyy out
+ zoom = 2048.0;
+ }
+
+ vik_viewport_set_zoom ( vw->viking_vvp, zoom );
+ vik_viewport_set_center_latlon ( vw->viking_vvp, &ll );
+
+ gchar *message = g_strdup_printf ( _("Location found: %s"), name );
+ vik_window_statusbar_update ( vw, message, VIK_STATUSBAR_INFO );
+ g_free ( name );
+ g_free ( message );
+
+ // Signal to redraw from the background
+ vik_layers_panel_emit_update ( vw->viking_vlp );
+ }
+ else
+ vik_window_statusbar_update ( vw, _("Unable to determine location"), VIK_STATUSBAR_INFO );
+
+ return 0;
+}
+
/**
* Steps to be taken once initial loading has completed
*/
draw_update ( vw );
}
+
+ // If not loaded any file, maybe try the location lookup
+ if ( vw->loaded_type == LOAD_TYPE_READ_FAILURE ) {
+ if ( a_vik_get_startup_method ( ) == VIK_STARTUP_METHOD_AUTO_LOCATION ) {
+
+ vik_statusbar_set_message ( vw->viking_vs, VIK_STATUSBAR_INFO, _("Trying to determine location...") );
+
+ a_background_thread ( GTK_WINDOW(vw),
+ _("Determining location"),
+ (vik_thr_func) determine_location_thread,
+ vw,
+ NULL,
+ NULL,
+ 1 );
+ }
+ }
}
static void open_window ( VikWindow *vw, GSList *files )
gtk_action_activate ( gtk_action_group_get_action ( vw->action_group, "Pan" ) );
vw->filename = NULL;
-
+ vw->loaded_type = LOAD_TYPE_READ_FAILURE; //AKA none
vw->modified = FALSE;
vw->only_updating_coord_mode_ui = FALSE;
void vik_window_open_file ( VikWindow *vw, const gchar *filename, gboolean change_filename )
{
vik_window_set_busy_cursor ( vw );
-
- switch ( a_file_load ( vik_layers_panel_get_top_layer(vw->viking_vlp), vw->viking_vvp, filename ) )
+ vw->loaded_type = a_file_load ( vik_layers_panel_get_top_layer(vw->viking_vlp), vw->viking_vvp, filename );
+ switch ( vw->loaded_type )
{
case LOAD_TYPE_READ_FAILURE:
a_dialog_error_msg ( GTK_WINDOW(vw), _("The file you requested could not be opened.") );
projects / andy / viking.git / commitdiff