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osm-gps-map navigator
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 "converter.h" |
22 | #include <math.h> // for isnan |
23 | |
24 | #ifdef ENABLE_OSM_GPS_MAP |
25 | #include "osm-gps-map.h" |
26 | #endif |
27 | |
28 | #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP |
29 | #define GPS_DEFAULT_ZOOM 13 |
30 | |
31 | #define PROXY_KEY "/system/http_proxy/" |
32 | |
33 | static const char *get_proxy_uri(appdata_t *appdata) { |
34 | static char proxy_buffer[64] = ""; |
35 | |
36 | /* use environment settings if preset */ |
37 | const char *proxy = g_getenv("http_proxy"); |
38 | if(proxy) { |
39 | printf("http_proxy: %s\n", proxy); |
40 | return proxy; |
41 | } |
42 | |
43 | /* ------------- get proxy settings -------------------- */ |
44 | if(gconf_client_get_bool(appdata->gconf_client, |
45 | PROXY_KEY "use_http_proxy", NULL)) { |
46 | |
47 | /* we can savely ignore things like "ignore_hosts" since we */ |
48 | /* are pretty sure not inside the net of one of our map renderers */ |
49 | /* (unless the user works at google :-) */ |
50 | |
51 | /* get basic settings */ |
52 | char *host = |
53 | gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL); |
54 | if(host) { |
55 | int port = |
56 | gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL); |
57 | |
58 | snprintf(proxy_buffer, sizeof(proxy_buffer), |
59 | "http://%s:%u", host, port); |
60 | |
61 | g_free(host); |
62 | } |
63 | return proxy_buffer; |
64 | } |
65 | |
66 | return NULL; |
67 | } |
68 | |
69 | static void map_zoom(map_context_t *context, int step) { |
70 | gint zoom; |
71 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
72 | g_object_get(map, "zoom", &zoom, NULL); |
73 | zoom = osm_gps_map_set_zoom(map, zoom+step); |
74 | |
75 | /* enable/disable zoom buttons as required */ |
76 | gtk_widget_set_sensitive(context->zoomin, |
77 | zoom < osm_gps_map_source_get_max_zoom(MAP_SOURCE)); |
78 | gtk_widget_set_sensitive(context->zoomout, |
79 | zoom > osm_gps_map_source_get_min_zoom(MAP_SOURCE)); |
80 | |
81 | /* save new zoom */ |
82 | context->appdata->map.zoom = zoom; |
83 | } |
84 | |
85 | static gboolean |
86 | cb_map_zoomin(GtkButton *button, map_context_t *context) { |
87 | map_zoom(context, +1); |
88 | return FALSE; |
89 | } |
90 | |
91 | static gboolean |
92 | cb_map_zoomout(GtkButton *button, map_context_t *context) { |
93 | map_zoom(context, -1); |
94 | return FALSE; |
95 | } |
96 | |
97 | static gboolean |
98 | cb_map_gps(GtkButton *button, map_context_t *context) { |
99 | pos_t *refpos = get_pos(context->appdata); |
100 | if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) { |
101 | osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), |
102 | refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM); |
103 | } else { |
104 | /* no coordinates given: display the entire world */ |
105 | osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), |
106 | 0.0, 0.0, 1); |
107 | } |
108 | |
109 | return FALSE; |
110 | } |
111 | |
112 | static GtkWidget |
113 | *map_add_button(int icon, GCallback cb, gpointer data, |
114 | char *tooltip) { |
115 | GtkWidget *button = gtk_button_new(); |
116 | gtk_button_set_image(GTK_BUTTON(button), icon_get_widget(ICON_MISC, icon)); |
117 | g_signal_connect(button, "clicked", cb, data); |
118 | #ifndef USE_MAEMO |
119 | gtk_widget_set_tooltip_text(button, tooltip); |
120 | #endif |
121 | return button; |
122 | } |
123 | |
124 | static int dist2pixel(map_context_t *context, float km, float lat) { |
125 | return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget)); |
126 | } |
127 | |
128 | static gboolean map_gps_update(gpointer data) { |
129 | map_context_t *context = (map_context_t*)data; |
130 | |
131 | /* get reference position ... */ |
132 | pos_t *refpos = get_pos(context->appdata); |
133 | gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon); |
134 | |
135 | /* ... and enable "goto" button if it's valid */ |
136 | gtk_widget_set_sensitive(context->gps, ok); |
137 | |
138 | if(ok) { |
139 | float heading = NAN; |
140 | int radius = 0; |
141 | |
142 | if(context->appdata->use_gps) { |
143 | heading = gps_get_heading(context->appdata); |
144 | |
145 | /* get error */ |
146 | float eph = gps_get_eph(context->appdata); |
147 | if(!isnan(eph)) |
148 | radius = dist2pixel(context, eph/1000, refpos->lat); |
149 | } |
150 | |
151 | g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL); |
152 | osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget), |
153 | refpos->lat, refpos->lon, heading); |
154 | } else |
155 | osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget)); |
156 | |
157 | return TRUE; |
158 | } |
159 | |
160 | static gboolean on_map_configure(GtkWidget *widget, |
161 | GdkEventConfigure *event, |
162 | map_context_t *context) { |
163 | |
164 | /* set default values if they are invalid */ |
165 | if(!context->appdata->map.zoom || |
166 | isnan(context->appdata->map.pos.lat) || |
167 | isnan(context->appdata->map.pos.lon)) { |
168 | printf("no valid map position found\n"); |
169 | |
170 | pos_t *refpos = get_pos(context->appdata); |
171 | if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) { |
172 | /* use gps position if present */ |
173 | context->appdata->map.pos = *refpos; |
174 | context->appdata->map.zoom = GPS_DEFAULT_ZOOM; |
175 | } else { |
176 | /* use world map otherwise */ |
177 | context->appdata->map.pos.lat = 0.0; |
178 | context->appdata->map.pos.lon = 0.0; |
179 | context->appdata->map.zoom = 1; |
180 | } |
181 | } |
182 | |
183 | /* jump to initial position */ |
184 | osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), |
185 | context->appdata->map.pos.lat, |
186 | context->appdata->map.pos.lon, |
187 | context->appdata->map.zoom); |
188 | |
189 | return FALSE; |
190 | } |
191 | |
192 | static void map_draw_cachelist(GtkWidget *map, cache_t *cache) { |
193 | while(cache) { |
194 | GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type); |
195 | |
196 | osm_gps_map_add_image(OSM_GPS_MAP(map), |
197 | cache->pos.lat, cache->pos.lon, icon); |
198 | |
199 | cache = cache->next; |
200 | } |
201 | } |
202 | |
203 | static void |
204 | map_cachelist_nearest(cache_t *cache, pos_t *pos, |
205 | cache_t **result, float *distance) { |
206 | while(cache) { |
207 | float dist = |
208 | pow(cache->pos.lat - pos->lat, 2) + |
209 | pow(cache->pos.lon - pos->lon, 2); |
210 | |
211 | if(!(dist > *distance)) { |
212 | *result = cache; |
213 | *distance = dist; |
214 | } |
215 | |
216 | cache = cache->next; |
217 | } |
218 | } |
219 | |
220 | static cache_t *map_closest(map_context_t *context, pos_t *pos) { |
221 | cache_t *result = NULL; |
222 | float distance = NAN; |
223 | |
224 | #ifdef USE_MAEMO |
225 | if(!context->appdata->cur_gpx) { |
226 | #endif |
227 | /* search all geocaches */ |
228 | gpx_t *gpx = context->appdata->gpx; |
229 | while(gpx) { |
230 | map_cachelist_nearest(gpx->cache, pos, &result, &distance); |
231 | gpx = gpx->next; |
232 | } |
233 | #ifdef USE_MAEMO |
234 | } else { |
235 | map_cachelist_nearest(context->appdata->cur_gpx->cache, |
236 | pos, &result, &distance); |
237 | } |
238 | #endif |
239 | |
240 | return result; |
241 | } |
242 | |
243 | /* translate between osm-gps-map positions and gpxview ones */ |
244 | pos_t coord2pos(coord_t coo) { |
245 | pos_t pos; |
246 | pos.lat = rad2deg(coo.rlat); |
247 | pos.lon = rad2deg(coo.rlon); |
248 | return pos; |
249 | } |
250 | |
251 | #define CLICK_FUZZ (24) |
252 | |
253 | static gboolean |
254 | on_map_button_press_event(GtkWidget *widget, |
255 | GdkEventButton *event, map_context_t *context) { |
256 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
257 | |
258 | /* got a press event without release event? eat it! */ |
259 | if(context->press_on != NULL) { |
260 | printf("PRESS: already\n"); |
261 | return TRUE; |
262 | } |
263 | |
264 | pos_t pos = |
265 | coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y)); |
266 | |
267 | cache_t *nearest = map_closest(context, &pos); |
268 | if(nearest) { |
269 | float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE); |
270 | if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) |
271 | context->press_on = nearest; |
272 | } |
273 | |
274 | return FALSE; |
275 | } |
276 | |
277 | static void |
278 | cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) { |
279 | /* convert the pixbuf into something cairo can handle */ |
280 | |
281 | // Create a new ImageSurface |
282 | cairo_surface_t *image_surface = |
283 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
284 | gdk_pixbuf_get_width(buf), |
285 | gdk_pixbuf_get_height(buf)); |
286 | |
287 | // Create the new Context for the ImageSurface |
288 | cairo_t *context = cairo_create(image_surface); |
289 | |
290 | // Draw the image on the new Context |
291 | gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0); |
292 | cairo_paint(context); |
293 | |
294 | // now draw this onto the original context |
295 | cairo_set_source_surface(cr, image_surface, x, y); |
296 | |
297 | cairo_paint(cr); |
298 | } |
299 | |
300 | #define LINE_SKIP 7 |
301 | |
302 | static void |
303 | balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) { |
304 | cache_t *cache = (cache_t*)data; |
305 | |
306 | // printf("draw cb for \"%s\"\n", cache->name); |
307 | |
308 | #if 0 |
309 | /* draw pink background to check clipping */ |
310 | cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40); |
311 | cairo_set_source_rgba (cr, 1, 0, 0, 0.3); |
312 | cairo_fill_preserve (cr); |
313 | cairo_set_line_width (cr, 0); |
314 | cairo_stroke (cr); |
315 | #endif |
316 | |
317 | /* leave a little border top and left */ |
318 | gint x = rect->x, y = rect->y; |
319 | |
320 | /* draw the cache type icon ... */ |
321 | GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type); |
322 | cairo_draw_pixbuf(cr, icon, x, y); |
323 | |
324 | /* ... and right of it the waypoint id */ |
325 | cairo_text_extents_t extents; |
326 | |
327 | if(cache->id) { |
328 | cairo_select_font_face (cr, "Sans", |
329 | CAIRO_FONT_SLANT_NORMAL, |
330 | CAIRO_FONT_WEIGHT_BOLD); |
331 | |
332 | cairo_set_font_size (cr, 20.0); |
333 | cairo_text_extents (cr, cache->id, &extents); |
334 | |
335 | /* display id right of icon vertically centered */ |
336 | x += gdk_pixbuf_get_width(icon) + 5; |
337 | y += (gdk_pixbuf_get_height(icon) + extents.height)/2; |
338 | cairo_move_to (cr, x, y); |
339 | cairo_set_source_rgba (cr, 0, 0, 0, 1); |
340 | cairo_show_text (cr, cache->id); |
341 | cairo_stroke (cr); |
342 | |
343 | y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP; |
344 | } else |
345 | y += gdk_pixbuf_get_height(icon); |
346 | |
347 | /* return to the left border and below icon/text */ |
348 | x = rect->x; |
349 | |
350 | /* everything from here uses the same font */ |
351 | cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL, |
352 | CAIRO_FONT_WEIGHT_NORMAL); |
353 | cairo_set_font_size (cr, 14.0); |
354 | |
355 | if(cache->name) { |
356 | /* draw cache name */ |
357 | cairo_text_extents (cr, cache->name, &extents); |
358 | y += extents.height; |
359 | cairo_move_to (cr, x, y); |
360 | cairo_set_source_rgba (cr, 0, 0, 0, 1); |
361 | cairo_show_text (cr, cache->name); |
362 | cairo_stroke (cr); |
363 | |
364 | /* return to the left border and below text */ |
365 | y += LINE_SKIP; |
366 | x = rect->x; |
367 | } |
368 | |
369 | if(cache->terrain) { |
370 | /* draw cache rating */ |
371 | const char *terrain = "Terrain:"; |
372 | icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2)); |
373 | cairo_text_extents (cr, _(terrain), &extents); |
374 | y += (gdk_pixbuf_get_height(icon) + extents.height)/2; |
375 | |
376 | /* draw "Terrain:" string */ |
377 | cairo_move_to (cr, x, y); |
378 | cairo_set_source_rgba (cr, 0, 0, 0, 1); |
379 | cairo_show_text (cr, _(terrain)); |
380 | cairo_stroke (cr); |
381 | x += extents.width + 2; |
382 | |
383 | /* draw terrain stars */ |
384 | cairo_draw_pixbuf(cr, icon, x, y - |
385 | (gdk_pixbuf_get_height(icon) + extents.height)/2); |
386 | |
387 | x += gdk_pixbuf_get_width(icon) + LINE_SKIP; |
388 | y -= (gdk_pixbuf_get_height(icon) + extents.height)/2; |
389 | } |
390 | |
391 | if(cache->difficulty) { |
392 | const char *difficulty = "Difficulty:"; |
393 | cairo_text_extents (cr, _(difficulty), &extents); |
394 | y += (gdk_pixbuf_get_height(icon) + extents.height)/2; |
395 | |
396 | /* draw "Difficulty:" string */ |
397 | cairo_move_to (cr, x, y); |
398 | cairo_set_source_rgba (cr, 0, 0, 0, 1); |
399 | cairo_show_text (cr, _(difficulty)); |
400 | cairo_stroke (cr); |
401 | x += extents.width + 2; |
402 | |
403 | icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2)); |
404 | cairo_draw_pixbuf(cr, icon, x, y - |
405 | (gdk_pixbuf_get_height(icon) + extents.height)/2); |
406 | } |
407 | } |
408 | |
409 | static gboolean |
410 | on_map_button_release_event(GtkWidget *widget, |
411 | GdkEventButton *event, map_context_t *context) { |
412 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
413 | |
414 | if(context->press_on) { |
415 | coord_t coo; |
416 | coo = osm_gps_map_get_co_ordinates(map, event->x, event->y); |
417 | |
418 | pos_t pos = |
419 | coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y)); |
420 | |
421 | cache_t *nearest = map_closest(context, &pos); |
422 | if(nearest && nearest == context->press_on) { |
423 | float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE); |
424 | if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) { |
425 | |
426 | osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon, |
427 | balloon_draw_cb, nearest); |
428 | } |
429 | } |
430 | context->press_on = NULL; |
431 | } else { |
432 | /* save new map position */ |
433 | gfloat lat, lon; |
434 | g_object_get(map, "latitude", &lat, "longitude", &lon, NULL); |
435 | context->appdata->map.pos.lat = lat; |
436 | context->appdata->map.pos.lon = lon; |
437 | } |
438 | |
439 | return FALSE; |
440 | } |
441 | |
442 | static void on_window_destroy(GtkWidget *widget, map_context_t *context) { |
443 | appdata_t *appdata = context->appdata; |
444 | |
445 | printf("destroy map window\n"); |
446 | |
447 | /* save map parameters */ |
448 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
449 | gint zoom; |
450 | g_object_get(map, "zoom", &zoom, NULL); |
451 | context->appdata->map.zoom = zoom; |
452 | |
453 | gfloat lat, lon; |
454 | g_object_get(map, "latitude", &lat, "longitude", &lon, NULL); |
455 | context->appdata->map.pos.lat = lat; |
456 | context->appdata->map.pos.lon = lon; |
457 | |
458 | #if MAEMO_VERSION_MAJOR == 5 |
459 | /* restore cur_view */ |
460 | context->appdata->cur_view = context->old_view; |
461 | #endif |
462 | |
463 | gtk_timeout_remove(context->handler_id); |
464 | |
465 | g_free(context); |
466 | appdata->map.context = NULL; |
467 | } |
468 | |
469 | void map(appdata_t *appdata) { |
470 | map_context_t *context = NULL; |
471 | |
472 | /* if the map window already exists, just raise it */ |
473 | if(appdata->map.context) { |
474 | gtk_window_present(GTK_WINDOW(appdata->map.context->window)); |
475 | return; |
476 | } |
477 | |
478 | context = appdata->map.context = g_new0(map_context_t, 1); |
479 | context->appdata = appdata; |
480 | |
481 | GtkWidget *hbox = gtk_hbox_new(FALSE, 0); |
482 | |
483 | char *path = g_strdup_printf("%s/map/", appdata->image_path); |
484 | const char *proxy = get_proxy_uri(appdata); |
485 | |
486 | context->widget = g_object_new(OSM_TYPE_GPS_MAP, |
487 | "map-source", MAP_SOURCE, |
488 | "tile-cache", path, |
489 | "auto-center", FALSE, |
490 | "record-trip-history", FALSE, |
491 | "show-trip-history", FALSE, |
492 | proxy?"proxy-uri":NULL, proxy, |
493 | NULL); |
494 | |
495 | g_free(path); |
496 | |
497 | char *name = NULL; |
498 | #ifdef USE_MAEMO |
499 | if(!appdata->cur_gpx) { |
500 | #endif |
501 | /* draw all geocaches */ |
502 | gpx_t *gpx = appdata->gpx; |
503 | while(gpx) { |
504 | map_draw_cachelist(context->widget, gpx->cache); |
505 | gpx = gpx->next; |
506 | } |
507 | name = g_strdup(_("all geocaches")); |
508 | #ifdef USE_MAEMO |
509 | } else { |
510 | map_draw_cachelist(context->widget, appdata->cur_gpx->cache); |
511 | name = g_strdup(appdata->cur_gpx->name); |
512 | } |
513 | #endif |
514 | |
515 | char *title = g_strdup_printf(_("Map - %s"), name); |
516 | g_free(name); |
517 | |
518 | #ifdef USE_MAEMO |
519 | #ifdef USE_STACKABLE_WINDOW |
520 | context->window = hildon_stackable_window_new(); |
521 | #else |
522 | context->window = hildon_window_new(); |
523 | #endif |
524 | #else |
525 | context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL); |
526 | #endif |
527 | |
528 | gtk_window_set_title(GTK_WINDOW(context->window), title); |
529 | |
530 | #ifndef USE_MAEMO |
531 | gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480); |
532 | #endif |
533 | |
534 | g_free(title); |
535 | |
536 | g_signal_connect(G_OBJECT(context->widget), "configure-event", |
537 | G_CALLBACK(on_map_configure), context); |
538 | |
539 | g_signal_connect(G_OBJECT(context->widget), "button-press-event", |
540 | G_CALLBACK(on_map_button_press_event), context); |
541 | |
542 | g_signal_connect(G_OBJECT(context->widget), "button-release-event", |
543 | G_CALLBACK(on_map_button_release_event), context); |
544 | |
545 | gtk_box_pack_start_defaults(GTK_BOX(hbox), context->widget); |
546 | /* zoom button box */ |
547 | GtkWidget *vbox = gtk_vbox_new(FALSE,0); |
548 | |
549 | context->zoomin = |
550 | map_add_button(10, G_CALLBACK(cb_map_zoomin), |
551 | context, _("Zoom in")); |
552 | gtk_box_pack_start(GTK_BOX(vbox), context->zoomin, FALSE, FALSE, 0); |
553 | |
554 | context->zoomout = |
555 | map_add_button(11, G_CALLBACK(cb_map_zoomout), |
556 | context, _("Zoom out")); |
557 | gtk_box_pack_start(GTK_BOX(vbox), context->zoomout, FALSE, FALSE, 0); |
558 | |
559 | context->gps = |
560 | map_add_button(9, G_CALLBACK(cb_map_gps), |
561 | context, _("Jump to GPS position")); |
562 | gtk_widget_set_sensitive(context->gps, FALSE); |
563 | |
564 | /* install handler for timed updates of the gps button */ |
565 | context->handler_id = gtk_timeout_add(1000, map_gps_update, context); |
566 | gtk_box_pack_start(GTK_BOX(vbox), context->gps, FALSE, FALSE, 0); |
567 | |
568 | gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0); |
569 | |
570 | #if MAEMO_VERSION_MAJOR == 5 |
571 | /* prevent some of the main screen things */ |
572 | context->old_view = appdata->cur_view; |
573 | appdata->cur_view = NULL; |
574 | #endif |
575 | |
576 | g_signal_connect(G_OBJECT(context->window), "destroy", |
577 | G_CALLBACK(on_window_destroy), context); |
578 | |
579 | gtk_container_add(GTK_CONTAINER(context->window), hbox); |
580 | gtk_widget_show_all(GTK_WIDGET(context->window)); |
581 | } |