2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
5 * Copyright (C) 2009, Guilhem Bonnefille <guilhem.bonnefille@gmail.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
29 #include <glib/gstdio.h>
30 #include <glib/gprintf.h>
31 #include <glib/gi18n.h>
34 #include "vikgototool.h"
38 #if ! GLIB_CHECK_VERSION(2,22,0)
39 #define g_mapped_file_unref g_mapped_file_free
42 static gchar *last_goto_str = NULL;
43 static VikCoord *last_coord = NULL;
44 static gchar *last_successful_goto_str = NULL;
46 static GList *goto_tools_list = NULL;
48 #define VIK_SETTINGS_GOTO_PROVIDER "goto_provider"
49 int last_goto_tool = -1;
51 void vik_goto_register ( VikGotoTool *tool )
53 if ( IS_VIK_GOTO_TOOL( tool ) )
54 goto_tools_list = g_list_append ( goto_tools_list, g_object_ref ( tool ) );
57 void vik_goto_unregister_all ()
59 g_list_foreach ( goto_tools_list, (GFunc) g_object_unref, NULL );
62 gchar * a_vik_goto_get_search_string_for_this_place(VikWindow *vw)
67 VikViewport *vvp = vik_window_viewport(vw);
68 const VikCoord *cur_center = vik_viewport_get_center(vvp);
69 if (vik_coord_equals(cur_center, last_coord)) {
70 return(last_successful_goto_str);
76 static void display_no_tool(VikWindow *vw)
78 GtkWidget *dialog = NULL;
80 dialog = gtk_message_dialog_new ( GTK_WINDOW(vw), GTK_DIALOG_MODAL, GTK_MESSAGE_WARNING, GTK_BUTTONS_OK, _("No goto tool available.") );
82 gtk_dialog_run ( GTK_DIALOG(dialog) );
84 gtk_widget_destroy(dialog);
87 static gboolean prompt_try_again(VikWindow *vw)
89 GtkWidget *dialog = NULL;
92 dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL );
93 gtk_window_set_title(GTK_WINDOW(dialog), _("goto"));
95 GtkWidget *goto_label = gtk_label_new(_("I don't know that place. Do you want another goto?"));
96 gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), goto_label, FALSE, FALSE, 5 );
97 gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
98 gtk_widget_show_all(dialog);
100 if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) != GTK_RESPONSE_ACCEPT )
103 gtk_widget_destroy(dialog);
107 static gint find_entry = -1;
108 static gint wanted_entry = -1;
110 static void find_provider (gpointer elem, gpointer user_data)
112 const gchar *name = vik_goto_tool_get_label (elem);
113 const gchar *provider = user_data;
115 if (!strcmp(name, provider)) {
116 wanted_entry = find_entry;
121 * Setup last_goto_tool value
123 static void get_provider ()
125 // Use setting for the provider if available
126 if ( last_goto_tool < 0 ) {
129 gchar *provider = NULL;
130 if ( a_settings_get_string ( VIK_SETTINGS_GOTO_PROVIDER, &provider ) ) {
133 g_list_foreach (goto_tools_list, find_provider, provider);
134 // If not found set it to the first entry, otherwise use the entry
135 last_goto_tool = ( wanted_entry < 0 ) ? 0 : wanted_entry;
142 static gchar *a_prompt_for_goto_string(VikWindow *vw)
144 GtkWidget *dialog = NULL;
146 dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL );
147 gtk_window_set_title(GTK_WINDOW(dialog), _("goto"));
149 GtkWidget *tool_label = gtk_label_new(_("goto provider:"));
150 GtkWidget *tool_list = vik_combo_box_text_new ();
151 GList *current = g_list_first (goto_tools_list);
152 while (current != NULL)
155 VikGotoTool *tool = current->data;
156 label = vik_goto_tool_get_label (tool);
157 vik_combo_box_text_append ( tool_list, label );
158 current = g_list_next (current);
162 gtk_combo_box_set_active ( GTK_COMBO_BOX( tool_list ), last_goto_tool );
164 GtkWidget *goto_label = gtk_label_new(_("Enter address or place name:"));
165 GtkWidget *goto_entry = gtk_entry_new();
167 gtk_entry_set_text(GTK_ENTRY(goto_entry), last_goto_str);
169 // 'ok' when press return in the entry
170 g_signal_connect_swapped (goto_entry, "activate", G_CALLBACK(a_dialog_response_accept), dialog);
172 gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), tool_label, FALSE, FALSE, 5 );
173 gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), tool_list, FALSE, FALSE, 5 );
174 gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), goto_label, FALSE, FALSE, 5 );
175 gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), goto_entry, FALSE, FALSE, 5 );
176 gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
177 gtk_widget_show_all(dialog);
179 // Ensure the text field has focus so we can start typing straight away
180 gtk_widget_grab_focus ( goto_entry );
182 if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) != GTK_RESPONSE_ACCEPT ) {
183 gtk_widget_destroy(dialog);
187 // TODO check if list is empty
188 last_goto_tool = gtk_combo_box_get_active ( GTK_COMBO_BOX(tool_list) );
189 gchar *provider = vik_goto_tool_get_label ( g_list_nth_data (goto_tools_list, last_goto_tool) );
190 a_settings_set_string ( VIK_SETTINGS_GOTO_PROVIDER, provider );
192 gchar *goto_str = g_strdup ( gtk_entry_get_text ( GTK_ENTRY(goto_entry) ) );
194 gtk_widget_destroy(dialog);
196 if (goto_str[0] != '\0') {
198 g_free(last_goto_str);
199 last_goto_str = g_strdup(goto_str);
202 return(goto_str); /* goto_str needs to be freed by caller */
206 * Goto a place when we already have a string to search on
208 * Returns: %TRUE if a successful lookup
210 static gboolean vik_goto_place ( VikWindow *vw, VikViewport *vvp, gchar* name, VikCoord *vcoord )
212 // Ensure last_goto_tool is given a value
215 if ( goto_tools_list ) {
216 VikGotoTool *gototool = g_list_nth_data ( goto_tools_list, last_goto_tool );
218 if ( vik_goto_tool_get_coord ( gototool, vw, vvp, name, vcoord ) == 0 )
225 void a_vik_goto(VikWindow *vw, VikViewport *vvp)
229 gboolean more = TRUE;
231 if (goto_tools_list == NULL)
239 s_str = a_prompt_for_goto_string(vw);
240 if ((!s_str) || (s_str[0] == 0)) {
244 else if (!vik_goto_tool_get_coord(g_list_nth_data (goto_tools_list, last_goto_tool), vw, vvp, s_str, &new_center)) {
247 last_coord = g_malloc(sizeof(VikCoord));
248 *last_coord = new_center;
249 if (last_successful_goto_str)
250 g_free(last_successful_goto_str);
251 last_successful_goto_str = g_strdup(last_goto_str);
252 vik_viewport_set_center_coord(vvp, &new_center, TRUE);
255 else if (!prompt_try_again(vw))
261 #define HOSTIP_LATITUDE_PATTERN "\"lat\":\""
262 #define HOSTIP_LONGITUDE_PATTERN "\"lng\":\""
263 #define HOSTIP_CITY_PATTERN "\"city\":\""
264 #define HOSTIP_COUNTRY_PATTERN "\"country_name\":\""
267 * Automatic attempt to find out where you are using:
268 * 1. http://www.hostip.info ++
269 * 2. if not specific enough fallback to using the default goto tool with a country name
270 * ++ Using returned JSON information
271 * c.f. with googlesearch.c - similar implementation is used here
274 * 0 if failed to locate anything
275 * 1 if exact latitude/longitude found
276 * 2 if position only as precise as a city
277 * 3 if position only as precise as a country
278 * @name: Contains the name of place found. Free this string after use.
280 gint a_vik_goto_where_am_i ( VikViewport *vvp, struct LatLon *ll, gchar **name )
285 gchar *tmpname = a_download_uri_to_tmp_file ( "http://api.hostip.info/get_json.php?position=true", NULL );
286 //gchar *tmpname = g_strdup ("../test/hostip2.json");
299 gchar lat_buf[32], lon_buf[32];
300 lat_buf[0] = lon_buf[0] = '\0';
301 gchar *country = NULL;
304 if ((mf = g_mapped_file_new(tmpname, FALSE, NULL)) == NULL) {
305 g_critical(_("couldn't map temp file"));
309 gsize len = g_mapped_file_get_length(mf);
310 gchar *text = g_mapped_file_get_contents(mf);
312 if ((pat = g_strstr_len(text, len, HOSTIP_COUNTRY_PATTERN))) {
313 pat += strlen(HOSTIP_COUNTRY_PATTERN);
316 while (*pat != '"') {
320 country = g_strndup(ss, fragment_len);
323 if ((pat = g_strstr_len(text, len, HOSTIP_CITY_PATTERN))) {
324 pat += strlen(HOSTIP_CITY_PATTERN);
327 while (*pat != '"') {
331 city = g_strndup(ss, fragment_len);
334 if ((pat = g_strstr_len(text, len, HOSTIP_LATITUDE_PATTERN))) {
335 pat += strlen(HOSTIP_LATITUDE_PATTERN);
339 while ((ss < (lat_buf + sizeof(lat_buf))) && (pat < (text + len)) &&
340 (g_ascii_isdigit(*pat) || (*pat == '.')))
343 ll->lat = g_ascii_strtod(lat_buf, NULL);
346 if ((pat = g_strstr_len(text, len, HOSTIP_LONGITUDE_PATTERN))) {
347 pat += strlen(HOSTIP_LONGITUDE_PATTERN);
351 while ((ss < (lon_buf + sizeof(lon_buf))) && (pat < (text + len)) &&
352 (g_ascii_isdigit(*pat) || (*pat == '.')))
355 ll->lon = g_ascii_strtod(lon_buf, NULL);
358 if ( ll->lat != 0.0 && ll->lon != 0.0 ) {
359 if ( ll->lat > -90.0 && ll->lat < 90.0 && ll->lon > -180.0 && ll->lon < 180.0 ) {
360 // Found a 'sensible' & 'precise' location
362 *name = g_strdup ( _("Locality") ); //Albeit maybe not known by an actual name!
366 // Hopefully city name is unique enough to lookup position on
367 // Maybe for American places where hostip appends the State code on the end
368 // But if the country code is not appended if could easily get confused
369 // e.g. 'Portsmouth' could be at least
370 // Portsmouth, Hampshire, UK or
371 // Portsmouth, Viginia, USA.
373 // Try city name lookup
375 g_debug ( "%s: found city %s", __FUNCTION__, city );
376 if ( strcmp ( city, "(Unknown city)" ) != 0 ) {
378 if ( vik_goto_place ( NULL, vvp, city, &new_center ) ) {
380 vik_coord_to_latlon ( &new_center, ll );
388 // Try country name lookup
390 g_debug ( "%s: found country %s", __FUNCTION__, country );
391 if ( strcmp ( country, "(Unknown Country)" ) != 0 ) {
393 if ( vik_goto_place ( NULL, vvp, country, &new_center ) ) {
394 // Finally got something
395 vik_coord_to_latlon ( &new_center, ll );
405 g_mapped_file_unref ( mf );
406 g_remove ( tmpname );