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osm-gps-map built-in balloon
1 | /* |
2 | * Copyright (C) 2008-2009 Till Harbaum <till@harbaum.org>. |
3 | * |
4 | * This file is part of GPXView. |
5 | * |
6 | * GPXView is free software: you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation, either version 3 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * GPXView is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with GPXView. If not, see <http://www.gnu.org/licenses/>. |
18 | */ |
19 | |
20 | #include "gpxview.h" |
21 | #include <math.h> // for isnan |
22 | |
23 | #ifdef ENABLE_OSM_GPS_MAP |
24 | #include "osm-gps-map.h" |
25 | #endif |
26 | |
27 | #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP |
28 | #define GPS_DEFAULT_ZOOM 13 |
29 | |
30 | /* equatorial radius in meters */ |
31 | #define EQ_RADIUS (6378137.0) |
32 | |
33 | #define RAD2DEG(a) (((a)*180.0)/M_PI) |
34 | #define DEG2RAD(a) (((a)*M_PI)/180.0) |
35 | |
36 | #define PROXY_KEY "/system/http_proxy/" |
37 | |
38 | static const char *get_proxy_uri(appdata_t *appdata) { |
39 | static char proxy_buffer[64] = ""; |
40 | |
41 | /* use environment settings if preset */ |
42 | const char *proxy = g_getenv("http_proxy"); |
43 | if(proxy) { |
44 | printf("http_proxy: %s\n", proxy); |
45 | return proxy; |
46 | } |
47 | |
48 | /* ------------- get proxy settings -------------------- */ |
49 | if(gconf_client_get_bool(appdata->gconf_client, |
50 | PROXY_KEY "use_http_proxy", NULL)) { |
51 | |
52 | /* we can savely ignore things like "ignore_hosts" since we */ |
53 | /* are pretty sure not inside the net of one of our map renderers */ |
54 | /* (unless the user works at google :-) */ |
55 | |
56 | /* get basic settings */ |
57 | char *host = |
58 | gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL); |
59 | if(host) { |
60 | int port = |
61 | gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL); |
62 | |
63 | snprintf(proxy_buffer, sizeof(proxy_buffer), |
64 | "http://%s:%u", host, port); |
65 | |
66 | g_free(host); |
67 | } |
68 | return proxy_buffer; |
69 | } |
70 | |
71 | return NULL; |
72 | } |
73 | |
74 | static void map_zoom(map_context_t *context, int step) { |
75 | gint zoom; |
76 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
77 | g_object_get(map, "zoom", &zoom, NULL); |
78 | zoom = osm_gps_map_set_zoom(map, zoom+step); |
79 | |
80 | /* enable/disable zoom buttons as required */ |
81 | gtk_widget_set_sensitive(context->zoomin, |
82 | zoom < osm_gps_map_source_get_max_zoom(MAP_SOURCE)); |
83 | gtk_widget_set_sensitive(context->zoomout, |
84 | zoom > osm_gps_map_source_get_min_zoom(MAP_SOURCE)); |
85 | |
86 | /* hmm ... this doesn't really work */ |
87 | osm_gps_map_osd_speed(map, zoom); |
88 | |
89 | /* save new zoom */ |
90 | context->appdata->map.zoom = zoom; |
91 | } |
92 | |
93 | static gboolean |
94 | cb_map_zoomin(GtkButton *button, map_context_t *context) { |
95 | map_zoom(context, +1); |
96 | return FALSE; |
97 | } |
98 | |
99 | static gboolean |
100 | cb_map_zoomout(GtkButton *button, map_context_t *context) { |
101 | map_zoom(context, -1); |
102 | return FALSE; |
103 | } |
104 | |
105 | static gboolean |
106 | cb_map_gps(GtkButton *button, map_context_t *context) { |
107 | pos_t *refpos = get_pos(context->appdata); |
108 | if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) { |
109 | osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), |
110 | refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM); |
111 | } else { |
112 | /* no coordinates given: display the entire world */ |
113 | osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), |
114 | 0.0, 0.0, 1); |
115 | } |
116 | |
117 | return FALSE; |
118 | } |
119 | |
120 | static GtkWidget |
121 | *map_add_button(int icon, GCallback cb, gpointer data, |
122 | char *tooltip) { |
123 | GtkWidget *button = gtk_button_new(); |
124 | gtk_button_set_image(GTK_BUTTON(button), icon_get_widget(ICON_MISC, icon)); |
125 | g_signal_connect(button, "clicked", cb, data); |
126 | #ifndef USE_MAEMO |
127 | gtk_widget_set_tooltip_text(button, tooltip); |
128 | #endif |
129 | return button; |
130 | } |
131 | |
132 | static int dist2pixel(map_context_t *context, float km, float lat) { |
133 | return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget)); |
134 | } |
135 | |
136 | static gboolean map_gps_update(gpointer data) { |
137 | map_context_t *context = (map_context_t*)data; |
138 | |
139 | /* get reference position ... */ |
140 | pos_t *refpos = get_pos(context->appdata); |
141 | gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon); |
142 | |
143 | /* ... and enable "goto" button if it's valid */ |
144 | gtk_widget_set_sensitive(context->gps, ok); |
145 | |
146 | if(ok) { |
147 | float heading = NAN; |
148 | int radius = 0; |
149 | |
150 | if(context->appdata->use_gps) { |
151 | heading = gps_get_heading(context->appdata); |
152 | |
153 | /* get error */ |
154 | float eph = gps_get_eph(context->appdata); |
155 | if(!isnan(eph)) |
156 | radius = dist2pixel(context, eph/1000, refpos->lat); |
157 | } |
158 | |
159 | g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL); |
160 | osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget), |
161 | refpos->lat, refpos->lon, heading); |
162 | } else |
163 | osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget)); |
164 | |
165 | return TRUE; |
166 | } |
167 | |
168 | static gboolean on_map_configure(GtkWidget *widget, |
169 | GdkEventConfigure *event, |
170 | map_context_t *context) { |
171 | |
172 | /* set default values if they are invalid */ |
173 | if(!context->appdata->map.zoom || |
174 | isnan(context->appdata->map.pos.lat) || |
175 | isnan(context->appdata->map.pos.lon)) { |
176 | printf("no valid map position found\n"); |
177 | |
178 | pos_t *refpos = get_pos(context->appdata); |
179 | if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) { |
180 | /* use gps position if present */ |
181 | context->appdata->map.pos = *refpos; |
182 | context->appdata->map.zoom = GPS_DEFAULT_ZOOM; |
183 | } else { |
184 | /* use world map otherwise */ |
185 | context->appdata->map.pos.lat = 0.0; |
186 | context->appdata->map.pos.lon = 0.0; |
187 | context->appdata->map.zoom = 1; |
188 | } |
189 | } |
190 | |
191 | /* jump to initial position */ |
192 | osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), |
193 | context->appdata->map.pos.lat, |
194 | context->appdata->map.pos.lon, |
195 | context->appdata->map.zoom); |
196 | |
197 | return FALSE; |
198 | } |
199 | |
200 | static void map_draw_cachelist(GtkWidget *map, cache_t *cache) { |
201 | while(cache) { |
202 | GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type); |
203 | |
204 | osm_gps_map_add_image(OSM_GPS_MAP(map), |
205 | cache->pos.lat, cache->pos.lon, icon); |
206 | |
207 | cache = cache->next; |
208 | } |
209 | } |
210 | |
211 | static void |
212 | map_cachelist_nearest(cache_t *cache, pos_t *pos, |
213 | cache_t **result, float *distance) { |
214 | while(cache) { |
215 | float dist = |
216 | pow(cache->pos.lat - pos->lat, 2) + |
217 | pow(cache->pos.lon - pos->lon, 2); |
218 | |
219 | if(!(dist > *distance)) { |
220 | *result = cache; |
221 | *distance = dist; |
222 | } |
223 | |
224 | cache = cache->next; |
225 | } |
226 | } |
227 | |
228 | static cache_t *map_closest(map_context_t *context, pos_t *pos) { |
229 | cache_t *result = NULL; |
230 | float distance = NAN; |
231 | |
232 | #ifdef USE_MAEMO |
233 | if(!context->appdata->cur_gpx) { |
234 | #endif |
235 | /* search all geocaches */ |
236 | gpx_t *gpx = context->appdata->gpx; |
237 | while(gpx) { |
238 | map_cachelist_nearest(gpx->cache, pos, &result, &distance); |
239 | gpx = gpx->next; |
240 | } |
241 | #ifdef USE_MAEMO |
242 | } else { |
243 | map_cachelist_nearest(context->appdata->cur_gpx->cache, |
244 | pos, &result, &distance); |
245 | } |
246 | #endif |
247 | |
248 | return result; |
249 | } |
250 | |
251 | /* translate between osm-gps-map positions and gpxview ones */ |
252 | pos_t coord2pos(coord_t coo) { |
253 | pos_t pos; |
254 | pos.lat = RAD2DEG(coo.rlat); |
255 | pos.lon = RAD2DEG(coo.rlon); |
256 | return pos; |
257 | } |
258 | |
259 | #define CLICK_FUZZ (24) |
260 | |
261 | static gboolean |
262 | on_map_button_press_event(GtkWidget *widget, |
263 | GdkEventButton *event, map_context_t *context) { |
264 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
265 | |
266 | /* got a press event without release event? eat it! */ |
267 | if(context->press_on != NULL) { |
268 | printf("PRESS: already\n"); |
269 | return TRUE; |
270 | } |
271 | |
272 | pos_t pos = |
273 | coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y)); |
274 | |
275 | cache_t *nearest = map_closest(context, &pos); |
276 | if(nearest) { |
277 | float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE); |
278 | if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) |
279 | context->press_on = nearest; |
280 | } |
281 | |
282 | return FALSE; |
283 | } |
284 | |
285 | static gboolean |
286 | on_map_button_release_event(GtkWidget *widget, |
287 | GdkEventButton *event, map_context_t *context) { |
288 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
289 | |
290 | if(context->press_on) { |
291 | coord_t coo; |
292 | coo = osm_gps_map_get_co_ordinates(map, event->x, event->y); |
293 | |
294 | pos_t pos = |
295 | coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y)); |
296 | |
297 | cache_t *nearest = map_closest(context, &pos); |
298 | if(nearest && nearest == context->press_on) { |
299 | float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE); |
300 | if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) { |
301 | |
302 | osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon); |
303 | } |
304 | } |
305 | context->press_on = NULL; |
306 | } else { |
307 | /* save new map position */ |
308 | gfloat lat, lon; |
309 | g_object_get(map, "latitude", &lat, "longitude", &lon, NULL); |
310 | context->appdata->map.pos.lat = lat; |
311 | context->appdata->map.pos.lon = lon; |
312 | } |
313 | |
314 | return FALSE; |
315 | } |
316 | |
317 | static void on_window_destroy(GtkWidget *widget, map_context_t *context) { |
318 | appdata_t *appdata = context->appdata; |
319 | |
320 | printf("destroy map window\n"); |
321 | |
322 | /* save map parameters */ |
323 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
324 | gint zoom; |
325 | g_object_get(map, "zoom", &zoom, NULL); |
326 | context->appdata->map.zoom = zoom; |
327 | |
328 | gfloat lat, lon; |
329 | g_object_get(map, "latitude", &lat, "longitude", &lon, NULL); |
330 | context->appdata->map.pos.lat = lat; |
331 | context->appdata->map.pos.lon = lon; |
332 | |
333 | #if MAEMO_VERSION_MAJOR == 5 |
334 | /* restore cur_view */ |
335 | context->appdata->cur_view = context->old_view; |
336 | #endif |
337 | |
338 | gtk_timeout_remove(context->handler_id); |
339 | |
340 | g_free(context); |
341 | appdata->map.context = NULL; |
342 | } |
343 | |
344 | void map(appdata_t *appdata) { |
345 | map_context_t *context = NULL; |
346 | |
347 | /* if the map window already exists, just raise it */ |
348 | if(appdata->map.context) { |
349 | gtk_window_present(GTK_WINDOW(appdata->map.context->window)); |
350 | return; |
351 | } |
352 | |
353 | context = appdata->map.context = g_new0(map_context_t, 1); |
354 | context->appdata = appdata; |
355 | |
356 | GtkWidget *hbox = gtk_hbox_new(FALSE, 0); |
357 | |
358 | char *path = g_strdup_printf("%s/map/", appdata->image_path); |
359 | const char *proxy = get_proxy_uri(appdata); |
360 | |
361 | context->widget = g_object_new(OSM_TYPE_GPS_MAP, |
362 | "map-source", MAP_SOURCE, |
363 | "tile-cache", path, |
364 | "auto-center", FALSE, |
365 | "record-trip-history", FALSE, |
366 | "show-trip-history", FALSE, |
367 | proxy?"proxy-uri":NULL, proxy, |
368 | NULL); |
369 | |
370 | g_free(path); |
371 | |
372 | char *name = NULL; |
373 | #ifdef USE_MAEMO |
374 | if(!appdata->cur_gpx) { |
375 | #endif |
376 | /* draw all geocaches */ |
377 | gpx_t *gpx = appdata->gpx; |
378 | while(gpx) { |
379 | map_draw_cachelist(context->widget, gpx->cache); |
380 | gpx = gpx->next; |
381 | } |
382 | name = g_strdup(_("all geocaches")); |
383 | #ifdef USE_MAEMO |
384 | } else { |
385 | map_draw_cachelist(context->widget, appdata->cur_gpx->cache); |
386 | name = g_strdup(appdata->cur_gpx->name); |
387 | } |
388 | #endif |
389 | |
390 | char *title = g_strdup_printf(_("Map - %s"), name); |
391 | g_free(name); |
392 | |
393 | #ifdef USE_MAEMO |
394 | #ifdef USE_STACKABLE_WINDOW |
395 | context->window = hildon_stackable_window_new(); |
396 | #else |
397 | context->window = hildon_window_new(); |
398 | #endif |
399 | #else |
400 | context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL); |
401 | #endif |
402 | |
403 | gtk_window_set_title(GTK_WINDOW(context->window), title); |
404 | |
405 | #ifndef USE_MAEMO |
406 | gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480); |
407 | #endif |
408 | |
409 | g_free(title); |
410 | |
411 | g_signal_connect(G_OBJECT(context->widget), "configure-event", |
412 | G_CALLBACK(on_map_configure), context); |
413 | |
414 | g_signal_connect(G_OBJECT(context->widget), "button-press-event", |
415 | G_CALLBACK(on_map_button_press_event), context); |
416 | |
417 | g_signal_connect(G_OBJECT(context->widget), "button-release-event", |
418 | G_CALLBACK(on_map_button_release_event), context); |
419 | |
420 | gtk_box_pack_start_defaults(GTK_BOX(hbox), context->widget); |
421 | /* zoom button box */ |
422 | GtkWidget *vbox = gtk_vbox_new(FALSE,0); |
423 | |
424 | context->zoomin = |
425 | map_add_button(10, G_CALLBACK(cb_map_zoomin), |
426 | context, _("Zoom in")); |
427 | gtk_box_pack_start(GTK_BOX(vbox), context->zoomin, FALSE, FALSE, 0); |
428 | |
429 | context->zoomout = |
430 | map_add_button(11, G_CALLBACK(cb_map_zoomout), |
431 | context, _("Zoom out")); |
432 | gtk_box_pack_start(GTK_BOX(vbox), context->zoomout, FALSE, FALSE, 0); |
433 | |
434 | context->gps = |
435 | map_add_button(9, G_CALLBACK(cb_map_gps), |
436 | context, _("Jump to GPS position")); |
437 | gtk_widget_set_sensitive(context->gps, FALSE); |
438 | |
439 | /* install handler for timed updates of the gps button */ |
440 | context->handler_id = gtk_timeout_add(1000, map_gps_update, context); |
441 | gtk_box_pack_start(GTK_BOX(vbox), context->gps, FALSE, FALSE, 0); |
442 | |
443 | gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0); |
444 | |
445 | #if MAEMO_VERSION_MAJOR == 5 |
446 | /* prevent some of the main screen things */ |
447 | context->old_view = appdata->cur_view; |
448 | appdata->cur_view = NULL; |
449 | #endif |
450 | |
451 | g_signal_connect(G_OBJECT(context->window), "destroy", |
452 | G_CALLBACK(on_window_destroy), context); |
453 | |
454 | gtk_container_add(GTK_CONTAINER(context->window), hbox); |
455 | gtk_widget_show_all(GTK_WIDGET(context->window)); |
456 | } |