Contents of /trunk/src/map-tool.c

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Revision 73 - (show annotations)
Sun Aug 23 19:38:15 2009 UTC (14 years, 8 months ago) by harbaum
File MIME type: text/plain
File size: 15074 byte(s) 
OSD seperated from osm-gps-map
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 #include "osm-gps-map-osd-classic.h"
27 #endif
28
29 #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP
30 #define GPS_DEFAULT_ZOOM 13
31
32 #define PROXY_KEY "/system/http_proxy/"
33
34 static const char *get_proxy_uri(appdata_t *appdata) {
35 static char proxy_buffer[64] = "";
36
37 /* use environment settings if preset */
38 const char *proxy = g_getenv("http_proxy");
39 if(proxy) {
40 printf("http_proxy: %s\n", proxy);
41 return proxy;
42 }
43
44 /* ------------- get proxy settings -------------------- */
45 if(gconf_client_get_bool(appdata->gconf_client,
46 PROXY_KEY "use_http_proxy", NULL)) {
47
48 /* we can savely ignore things like "ignore_hosts" since we */
49 /* are pretty sure not inside the net of one of our map renderers */
50 /* (unless the user works at google :-) */
51
52 /* get basic settings */
53 char *host =
54 gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
55 if(host) {
56 int port =
57 gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
58
59 snprintf(proxy_buffer, sizeof(proxy_buffer),
60 "http://%s:%u", host, port);
61
62 g_free(host);
63 }
64 return proxy_buffer;
65 }
66
67 return NULL;
68 }
69
70 static void
71 cb_map_gps(osd_button_t but, map_context_t *context) {
72 if(but == OSD_GPS) {
73 pos_t *refpos = get_pos(context->appdata);
74 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
75 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
76 refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
77 } else {
78 /* no coordinates given: display the entire world */
79 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
80 0.0, 0.0, 1);
81 }
82 }
83 }
84
85 static int dist2pixel(map_context_t *context, float km, float lat) {
86 return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
87 }
88
89 static gboolean map_gps_update(gpointer data) {
90 map_context_t *context = (map_context_t*)data;
91
92 /* get reference position ... */
93 pos_t *refpos = get_pos(context->appdata);
94 gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
95
96 /* ... and enable "goto" button if it's valid */
97 osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
98 OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);
99
100 if(ok) {
101 float heading = NAN;
102 int radius = 0;
103
104 if(context->appdata->use_gps) {
105 heading = gps_get_heading(context->appdata);
106
107 /* get error */
108 float eph = gps_get_eph(context->appdata);
109 if(!isnan(eph))
110 radius = dist2pixel(context, eph/1000, refpos->lat);
111 }
112
113 g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
114 osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
115 refpos->lat, refpos->lon, heading);
116 } else
117 osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
118
119 return TRUE;
120 }
121
122 static gboolean on_map_configure(GtkWidget *widget,
123 GdkEventConfigure *event,
124 map_context_t *context) {
125
126 /* set default values if they are invalid */
127 if(!context->appdata->map.zoom ||
128 isnan(context->appdata->map.pos.lat) ||
129 isnan(context->appdata->map.pos.lon)) {
130 printf("no valid map position found\n");
131
132 pos_t *refpos = get_pos(context->appdata);
133 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
134 /* use gps position if present */
135 context->appdata->map.pos = *refpos;
136 context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
137 } else {
138 /* use world map otherwise */
139 context->appdata->map.pos.lat = 0.0;
140 context->appdata->map.pos.lon = 0.0;
141 context->appdata->map.zoom = 1;
142 }
143 }
144
145 /* jump to initial position */
146 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
147 context->appdata->map.pos.lat,
148 context->appdata->map.pos.lon,
149 context->appdata->map.zoom);
150
151 return FALSE;
152 }
153
154 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
155 while(cache) {
156 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
157
158 osm_gps_map_add_image(OSM_GPS_MAP(map),
159 cache->pos.lat, cache->pos.lon, icon);
160
161 cache = cache->next;
162 }
163 }
164
165 static void
166 map_cachelist_nearest(cache_t *cache, pos_t *pos,
167 cache_t **result, float *distance) {
168 while(cache) {
169 float dist =
170 pow(cache->pos.lat - pos->lat, 2) +
171 pow(cache->pos.lon - pos->lon, 2);
172
173 if(!(dist > *distance)) {
174 *result = cache;
175 *distance = dist;
176 }
177
178 cache = cache->next;
179 }
180 }
181
182 static cache_t *map_closest(map_context_t *context, pos_t *pos) {
183 cache_t *result = NULL;
184 float distance = NAN;
185
186 #ifdef USE_MAEMO
187 if(!context->appdata->cur_gpx) {
188 #endif
189 /* search all geocaches */
190 gpx_t *gpx = context->appdata->gpx;
191 while(gpx) {
192 map_cachelist_nearest(gpx->cache, pos, &result, &distance);
193 gpx = gpx->next;
194 }
195 #ifdef USE_MAEMO
196 } else {
197 map_cachelist_nearest(context->appdata->cur_gpx->cache,
198 pos, &result, &distance);
199 }
200 #endif
201
202 return result;
203 }
204
205 /* translate between osm-gps-map positions and gpxview ones */
206 pos_t coord2pos(coord_t coo) {
207 pos_t pos;
208 pos.lat = rad2deg(coo.rlat);
209 pos.lon = rad2deg(coo.rlon);
210 return pos;
211 }
212
213 #define CLICK_FUZZ (24)
214
215 static gboolean
216 on_map_button_press_event(GtkWidget *widget,
217 GdkEventButton *event, map_context_t *context) {
218 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
219
220 /* got a press event without release event? eat it! */
221 if(context->press_on != NULL) {
222 printf("PRESS: already\n");
223 return TRUE;
224 }
225
226 pos_t pos =
227 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
228
229 cache_t *nearest = map_closest(context, &pos);
230 if(nearest) {
231 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
232 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
233 context->press_on = nearest;
234 }
235
236 return FALSE;
237 }
238
239 static void
240 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
241 /* convert the pixbuf into something cairo can handle */
242
243 // Create a new ImageSurface
244 cairo_surface_t *image_surface =
245 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
246 gdk_pixbuf_get_width(buf),
247 gdk_pixbuf_get_height(buf));
248
249 // Create the new Context for the ImageSurface
250 cairo_t *context = cairo_create(image_surface);
251
252 // Draw the image on the new Context
253 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
254 cairo_paint(context);
255
256 // now draw this onto the original context
257 cairo_set_source_surface(cr, image_surface, x, y);
258
259 cairo_paint(cr);
260 }
261
262 #ifndef BIG_BALLOONS
263 #define LINE_SKIP 7
264 #else
265 #define LINE_SKIP 12
266 #endif
267
268 static void
269 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
270 cache_t *cache = (cache_t*)data;
271
272 // printf("draw cb for \"%s\"\n", cache->name);
273
274 #if 0
275 /* draw pink background to check clipping */
276 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
277 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
278 cairo_fill_preserve (cr);
279 cairo_set_line_width (cr, 0);
280 cairo_stroke (cr);
281 #endif
282
283 /* leave a little border top and left */
284 gint x = rect->x, y = rect->y;
285
286 /* draw the cache type icon ... */
287 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
288 cairo_draw_pixbuf(cr, icon, x, y);
289
290 /* ... and right of it the waypoint id */
291 cairo_text_extents_t extents;
292
293 if(cache->id) {
294 cairo_select_font_face (cr, "Sans",
295 CAIRO_FONT_SLANT_NORMAL,
296 CAIRO_FONT_WEIGHT_BOLD);
297
298 #ifndef BIG_BALLOONS
299 cairo_set_font_size (cr, 20.0);
300 #else
301 cairo_set_font_size (cr, 36.0);
302 #endif
303
304 cairo_text_extents (cr, cache->id, &extents);
305
306 /* display id right of icon vertically centered */
307 x += gdk_pixbuf_get_width(icon) + 5;
308 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
309 cairo_move_to (cr, x, y);
310 cairo_set_source_rgba (cr, 0, 0, 0, 1);
311 cairo_show_text (cr, cache->id);
312 cairo_stroke (cr);
313
314 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
315 } else
316 y += gdk_pixbuf_get_height(icon);
317
318 /* return to the left border and below icon/text */
319 x = rect->x;
320
321 /* everything from here uses the same font */
322 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
323 CAIRO_FONT_WEIGHT_NORMAL);
324 #ifndef BIG_BALLOONS
325 cairo_set_font_size (cr, 14.0);
326 #else
327 cairo_set_font_size (cr, 22.0);
328 #endif
329
330 if(cache->name) {
331 /* draw cache name */
332 cairo_text_extents (cr, cache->name, &extents);
333 y += extents.height;
334 cairo_move_to (cr, x, y);
335 cairo_set_source_rgba (cr, 0, 0, 0, 1);
336 cairo_show_text (cr, cache->name);
337 cairo_stroke (cr);
338
339 /* return to the left border and below text */
340 y += LINE_SKIP;
341 x = rect->x;
342 }
343
344 if(cache->terrain) {
345 /* draw cache rating */
346 const char *terrain = "Terrain:";
347 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
348 cairo_text_extents (cr, _(terrain), &extents);
349 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
350
351 /* draw "Terrain:" string */
352 cairo_move_to (cr, x, y);
353 cairo_set_source_rgba (cr, 0, 0, 0, 1);
354 cairo_show_text (cr, _(terrain));
355 cairo_stroke (cr);
356 x += extents.width + 2;
357
358 /* draw terrain stars */
359 cairo_draw_pixbuf(cr, icon, x, y -
360 (gdk_pixbuf_get_height(icon) + extents.height)/2);
361
362 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
363 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
364 }
365
366 if(cache->difficulty) {
367 const char *difficulty = "Difficulty:";
368 cairo_text_extents (cr, _(difficulty), &extents);
369 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
370
371 /* draw "Difficulty:" string */
372 cairo_move_to (cr, x, y);
373 cairo_set_source_rgba (cr, 0, 0, 0, 1);
374 cairo_show_text (cr, _(difficulty));
375 cairo_stroke (cr);
376 x += extents.width + 2;
377
378 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
379 cairo_draw_pixbuf(cr, icon, x, y -
380 (gdk_pixbuf_get_height(icon) + extents.height)/2);
381 }
382 }
383
384 static gboolean
385 on_map_button_release_event(GtkWidget *widget,
386 GdkEventButton *event, map_context_t *context) {
387 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
388
389 if(context->press_on) {
390 coord_t coo;
391 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
392
393 pos_t pos =
394 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
395
396 cache_t *nearest = map_closest(context, &pos);
397 if(nearest && nearest == context->press_on) {
398 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
399 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
400
401 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
402 balloon_draw_cb, nearest);
403 }
404 }
405 context->press_on = NULL;
406 } else {
407 /* save new map position */
408 gfloat lat, lon;
409 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
410 context->appdata->map.pos.lat = lat;
411 context->appdata->map.pos.lon = lon;
412 }
413
414 return FALSE;
415 }
416
417 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
418 appdata_t *appdata = context->appdata;
419
420 printf("destroy map window\n");
421
422 /* save map parameters */
423 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
424 gint zoom;
425 g_object_get(map, "zoom", &zoom, NULL);
426 context->appdata->map.zoom = zoom;
427
428 gfloat lat, lon;
429 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
430 context->appdata->map.pos.lat = lat;
431 context->appdata->map.pos.lon = lon;
432
433 #if MAEMO_VERSION_MAJOR == 5
434 /* restore cur_view */
435 context->appdata->cur_view = context->old_view;
436 #endif
437
438 gtk_timeout_remove(context->handler_id);
439
440 g_free(context);
441 appdata->map.context = NULL;
442 }
443
444 void map(appdata_t *appdata) {
445 map_context_t *context = NULL;
446
447 /* if the map window already exists, just raise it */
448 if(appdata->map.context) {
449 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
450 return;
451 }
452
453 context = appdata->map.context = g_new0(map_context_t, 1);
454 context->appdata = appdata;
455
456 char *path = g_strdup_printf("%s/map/", appdata->image_path);
457 const char *proxy = get_proxy_uri(appdata);
458
459 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
460 "map-source", MAP_SOURCE,
461 "tile-cache", path,
462 "auto-center", FALSE,
463 "record-trip-history", FALSE,
464 "show-trip-history", FALSE,
465 proxy?"proxy-uri":NULL, proxy,
466 NULL);
467
468 g_free(path);
469
470 osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
471
472 char *name = NULL;
473 #ifdef USE_MAEMO
474 if(!appdata->cur_gpx) {
475 #endif
476 /* draw all geocaches */
477 gpx_t *gpx = appdata->gpx;
478 while(gpx) {
479 map_draw_cachelist(context->widget, gpx->cache);
480 gpx = gpx->next;
481 }
482 name = g_strdup(_("all geocaches"));
483 #ifdef USE_MAEMO
484 } else {
485 map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
486 name = g_strdup(appdata->cur_gpx->name);
487 }
488 #endif
489
490 char *title = g_strdup_printf(_("Map - %s"), name);
491 g_free(name);
492
493 #ifdef USE_MAEMO
494 #ifdef USE_STACKABLE_WINDOW
495 context->window = hildon_stackable_window_new();
496 #else
497 context->window = hildon_window_new();
498 #endif
499 #else
500 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
501 #endif
502
503 gtk_window_set_title(GTK_WINDOW(context->window), title);
504
505 #ifndef USE_MAEMO
506 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
507 #endif
508
509 g_free(title);
510
511 g_signal_connect(G_OBJECT(context->widget), "configure-event",
512 G_CALLBACK(on_map_configure), context);
513
514 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
515 G_CALLBACK(on_map_button_press_event), context);
516
517 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
518 G_CALLBACK(on_map_button_release_event), context);
519
520 /* install handler for timed updates of the gps button */
521 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
522
523 #if MAEMO_VERSION_MAJOR == 5
524 /* prevent some of the main screen things */
525 context->old_view = appdata->cur_view;
526 appdata->cur_view = NULL;
527 #endif
528
529 g_signal_connect(G_OBJECT(context->window), "destroy",
530 G_CALLBACK(on_window_destroy), context);
531
532 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
533 gtk_widget_show_all(GTK_WIDGET(context->window));
534 }