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And more balloon stuff
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 void |
286 | cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) { |
287 | /* convert the pixbuf into something cairo can handle */ |
288 | |
289 | // Create a new ImageSurface |
290 | cairo_surface_t *image_surface = |
291 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
292 | gdk_pixbuf_get_width(buf), |
293 | gdk_pixbuf_get_height(buf)); |
294 | |
295 | // Create the new Context for the ImageSurface |
296 | cairo_t *context = cairo_create(image_surface); |
297 | |
298 | // Draw the image on the new Context |
299 | gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0); |
300 | cairo_paint(context); |
301 | |
302 | // now draw this onto the original context |
303 | cairo_set_source_surface(cr, image_surface, x, y); |
304 | cairo_paint(cr); |
305 | } |
306 | |
307 | #define LINE_SKIP 10 |
308 | |
309 | static void |
310 | balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) { |
311 | cache_t *cache = (cache_t*)data; |
312 | |
313 | // printf("draw cb for \"%s\"\n", cache->name); |
314 | |
315 | #if 0 |
316 | /* draw pink background to check clipping */ |
317 | cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40); |
318 | cairo_set_source_rgba (cr, 1, 0, 0, 0.3); |
319 | cairo_fill_preserve (cr); |
320 | cairo_set_line_width (cr, 0); |
321 | cairo_stroke (cr); |
322 | #endif |
323 | |
324 | /* leave a little border top and left */ |
325 | gint x = rect->x, y = rect->y; |
326 | |
327 | /* draw the cache type icon ... */ |
328 | GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type); |
329 | cairo_draw_pixbuf(cr, icon, x, y); |
330 | |
331 | /* ... and right of it the waypoint id */ |
332 | cairo_text_extents_t extents; |
333 | |
334 | cairo_select_font_face (cr, "Sans", |
335 | CAIRO_FONT_SLANT_NORMAL, |
336 | CAIRO_FONT_WEIGHT_BOLD); |
337 | |
338 | cairo_set_font_size (cr, 20.0); |
339 | cairo_text_extents (cr, cache->id, &extents); |
340 | |
341 | /* display id right of icon vertically centered */ |
342 | x += gdk_pixbuf_get_width(icon) + 5; |
343 | y += (gdk_pixbuf_get_height(icon) + extents.height)/2; |
344 | cairo_move_to (cr, x,y); |
345 | cairo_set_source_rgba (cr, 0, 0, 0, 1); |
346 | cairo_show_text (cr, cache->id); |
347 | cairo_stroke (cr); |
348 | |
349 | /* return to the left border and below icon/text */ |
350 | x = rect->x; |
351 | y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP; |
352 | |
353 | cairo_select_font_face (cr, "Sans", |
354 | CAIRO_FONT_SLANT_NORMAL, |
355 | CAIRO_FONT_WEIGHT_NORMAL); |
356 | cairo_set_font_size (cr, 14.0); |
357 | cairo_text_extents (cr, cache->name, &extents); |
358 | |
359 | cairo_move_to (cr, x,y); |
360 | cairo_show_text (cr, cache->name); |
361 | cairo_stroke (cr); |
362 | |
363 | /* return to the left border and below text */ |
364 | x = rect->x; |
365 | y += extents.height + LINE_SKIP; |
366 | } |
367 | |
368 | static gboolean |
369 | on_map_button_release_event(GtkWidget *widget, |
370 | GdkEventButton *event, map_context_t *context) { |
371 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
372 | |
373 | if(context->press_on) { |
374 | coord_t coo; |
375 | coo = osm_gps_map_get_co_ordinates(map, event->x, event->y); |
376 | |
377 | pos_t pos = |
378 | coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y)); |
379 | |
380 | cache_t *nearest = map_closest(context, &pos); |
381 | if(nearest && nearest == context->press_on) { |
382 | float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE); |
383 | if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) { |
384 | |
385 | osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon, |
386 | balloon_draw_cb, nearest); |
387 | } |
388 | } |
389 | context->press_on = NULL; |
390 | } else { |
391 | /* save new map position */ |
392 | gfloat lat, lon; |
393 | g_object_get(map, "latitude", &lat, "longitude", &lon, NULL); |
394 | context->appdata->map.pos.lat = lat; |
395 | context->appdata->map.pos.lon = lon; |
396 | } |
397 | |
398 | return FALSE; |
399 | } |
400 | |
401 | static void on_window_destroy(GtkWidget *widget, map_context_t *context) { |
402 | appdata_t *appdata = context->appdata; |
403 | |
404 | printf("destroy map window\n"); |
405 | |
406 | /* save map parameters */ |
407 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
408 | gint zoom; |
409 | g_object_get(map, "zoom", &zoom, NULL); |
410 | context->appdata->map.zoom = zoom; |
411 | |
412 | gfloat lat, lon; |
413 | g_object_get(map, "latitude", &lat, "longitude", &lon, NULL); |
414 | context->appdata->map.pos.lat = lat; |
415 | context->appdata->map.pos.lon = lon; |
416 | |
417 | #if MAEMO_VERSION_MAJOR == 5 |
418 | /* restore cur_view */ |
419 | context->appdata->cur_view = context->old_view; |
420 | #endif |
421 | |
422 | gtk_timeout_remove(context->handler_id); |
423 | |
424 | g_free(context); |
425 | appdata->map.context = NULL; |
426 | } |
427 | |
428 | void map(appdata_t *appdata) { |
429 | map_context_t *context = NULL; |
430 | |
431 | /* if the map window already exists, just raise it */ |
432 | if(appdata->map.context) { |
433 | gtk_window_present(GTK_WINDOW(appdata->map.context->window)); |
434 | return; |
435 | } |
436 | |
437 | context = appdata->map.context = g_new0(map_context_t, 1); |
438 | context->appdata = appdata; |
439 | |
440 | GtkWidget *hbox = gtk_hbox_new(FALSE, 0); |
441 | |
442 | char *path = g_strdup_printf("%s/map/", appdata->image_path); |
443 | const char *proxy = get_proxy_uri(appdata); |
444 | |
445 | context->widget = g_object_new(OSM_TYPE_GPS_MAP, |
446 | "map-source", MAP_SOURCE, |
447 | "tile-cache", path, |
448 | "auto-center", FALSE, |
449 | "record-trip-history", FALSE, |
450 | "show-trip-history", FALSE, |
451 | proxy?"proxy-uri":NULL, proxy, |
452 | NULL); |
453 | |
454 | g_free(path); |
455 | |
456 | char *name = NULL; |
457 | #ifdef USE_MAEMO |
458 | if(!appdata->cur_gpx) { |
459 | #endif |
460 | /* draw all geocaches */ |
461 | gpx_t *gpx = appdata->gpx; |
462 | while(gpx) { |
463 | map_draw_cachelist(context->widget, gpx->cache); |
464 | gpx = gpx->next; |
465 | } |
466 | name = g_strdup(_("all geocaches")); |
467 | #ifdef USE_MAEMO |
468 | } else { |
469 | map_draw_cachelist(context->widget, appdata->cur_gpx->cache); |
470 | name = g_strdup(appdata->cur_gpx->name); |
471 | } |
472 | #endif |
473 | |
474 | char *title = g_strdup_printf(_("Map - %s"), name); |
475 | g_free(name); |
476 | |
477 | #ifdef USE_MAEMO |
478 | #ifdef USE_STACKABLE_WINDOW |
479 | context->window = hildon_stackable_window_new(); |
480 | #else |
481 | context->window = hildon_window_new(); |
482 | #endif |
483 | #else |
484 | context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL); |
485 | #endif |
486 | |
487 | gtk_window_set_title(GTK_WINDOW(context->window), title); |
488 | |
489 | #ifndef USE_MAEMO |
490 | gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480); |
491 | #endif |
492 | |
493 | g_free(title); |
494 | |
495 | g_signal_connect(G_OBJECT(context->widget), "configure-event", |
496 | G_CALLBACK(on_map_configure), context); |
497 | |
498 | g_signal_connect(G_OBJECT(context->widget), "button-press-event", |
499 | G_CALLBACK(on_map_button_press_event), context); |
500 | |
501 | g_signal_connect(G_OBJECT(context->widget), "button-release-event", |
502 | G_CALLBACK(on_map_button_release_event), context); |
503 | |
504 | gtk_box_pack_start_defaults(GTK_BOX(hbox), context->widget); |
505 | /* zoom button box */ |
506 | GtkWidget *vbox = gtk_vbox_new(FALSE,0); |
507 | |
508 | context->zoomin = |
509 | map_add_button(10, G_CALLBACK(cb_map_zoomin), |
510 | context, _("Zoom in")); |
511 | gtk_box_pack_start(GTK_BOX(vbox), context->zoomin, FALSE, FALSE, 0); |
512 | |
513 | context->zoomout = |
514 | map_add_button(11, G_CALLBACK(cb_map_zoomout), |
515 | context, _("Zoom out")); |
516 | gtk_box_pack_start(GTK_BOX(vbox), context->zoomout, FALSE, FALSE, 0); |
517 | |
518 | context->gps = |
519 | map_add_button(9, G_CALLBACK(cb_map_gps), |
520 | context, _("Jump to GPS position")); |
521 | gtk_widget_set_sensitive(context->gps, FALSE); |
522 | |
523 | /* install handler for timed updates of the gps button */ |
524 | context->handler_id = gtk_timeout_add(1000, map_gps_update, context); |
525 | gtk_box_pack_start(GTK_BOX(vbox), context->gps, FALSE, FALSE, 0); |
526 | |
527 | gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0); |
528 | |
529 | #if MAEMO_VERSION_MAJOR == 5 |
530 | /* prevent some of the main screen things */ |
531 | context->old_view = appdata->cur_view; |
532 | appdata->cur_view = NULL; |
533 | #endif |
534 | |
535 | g_signal_connect(G_OBJECT(context->window), "destroy", |
536 | G_CALLBACK(on_window_destroy), context); |
537 | |
538 | gtk_container_add(GTK_CONTAINER(context->window), hbox); |
539 | gtk_widget_show_all(GTK_WIDGET(context->window)); |
540 | } |