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

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Revision 69 - (show annotations)
Thu Aug 20 18:54:06 2009 UTC (14 years, 8 months ago) by harbaum
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osm-gps-map update from osm2go
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
70 cb_map_gps(map_context_t *context) {
71 pos_t *refpos = get_pos(context->appdata);
72 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
73 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
74 refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
75 } else {
76 /* no coordinates given: display the entire world */
77 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
78 0.0, 0.0, 1);
79 }
80 }
81
82 static int dist2pixel(map_context_t *context, float km, float lat) {
83 return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
84 }
85
86 static gboolean map_gps_update(gpointer data) {
87 map_context_t *context = (map_context_t*)data;
88
89 /* get reference position ... */
90 pos_t *refpos = get_pos(context->appdata);
91 gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
92
93 /* ... and enable "goto" button if it's valid */
94 osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
95 OSM_GPS_MAP_OSD_GPS_CALLBACK(ok?cb_map_gps:NULL), context);
96
97 if(ok) {
98 float heading = NAN;
99 int radius = 0;
100
101 if(context->appdata->use_gps) {
102 heading = gps_get_heading(context->appdata);
103
104 /* get error */
105 float eph = gps_get_eph(context->appdata);
106 if(!isnan(eph))
107 radius = dist2pixel(context, eph/1000, refpos->lat);
108 }
109
110 g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
111 osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
112 refpos->lat, refpos->lon, heading);
113 } else
114 osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
115
116 return TRUE;
117 }
118
119 static gboolean on_map_configure(GtkWidget *widget,
120 GdkEventConfigure *event,
121 map_context_t *context) {
122
123 /* set default values if they are invalid */
124 if(!context->appdata->map.zoom ||
125 isnan(context->appdata->map.pos.lat) ||
126 isnan(context->appdata->map.pos.lon)) {
127 printf("no valid map position found\n");
128
129 pos_t *refpos = get_pos(context->appdata);
130 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
131 /* use gps position if present */
132 context->appdata->map.pos = *refpos;
133 context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
134 } else {
135 /* use world map otherwise */
136 context->appdata->map.pos.lat = 0.0;
137 context->appdata->map.pos.lon = 0.0;
138 context->appdata->map.zoom = 1;
139 }
140 }
141
142 /* jump to initial position */
143 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
144 context->appdata->map.pos.lat,
145 context->appdata->map.pos.lon,
146 context->appdata->map.zoom);
147
148 return FALSE;
149 }
150
151 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
152 while(cache) {
153 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
154
155 osm_gps_map_add_image(OSM_GPS_MAP(map),
156 cache->pos.lat, cache->pos.lon, icon);
157
158 cache = cache->next;
159 }
160 }
161
162 static void
163 map_cachelist_nearest(cache_t *cache, pos_t *pos,
164 cache_t **result, float *distance) {
165 while(cache) {
166 float dist =
167 pow(cache->pos.lat - pos->lat, 2) +
168 pow(cache->pos.lon - pos->lon, 2);
169
170 if(!(dist > *distance)) {
171 *result = cache;
172 *distance = dist;
173 }
174
175 cache = cache->next;
176 }
177 }
178
179 static cache_t *map_closest(map_context_t *context, pos_t *pos) {
180 cache_t *result = NULL;
181 float distance = NAN;
182
183 #ifdef USE_MAEMO
184 if(!context->appdata->cur_gpx) {
185 #endif
186 /* search all geocaches */
187 gpx_t *gpx = context->appdata->gpx;
188 while(gpx) {
189 map_cachelist_nearest(gpx->cache, pos, &result, &distance);
190 gpx = gpx->next;
191 }
192 #ifdef USE_MAEMO
193 } else {
194 map_cachelist_nearest(context->appdata->cur_gpx->cache,
195 pos, &result, &distance);
196 }
197 #endif
198
199 return result;
200 }
201
202 /* translate between osm-gps-map positions and gpxview ones */
203 pos_t coord2pos(coord_t coo) {
204 pos_t pos;
205 pos.lat = rad2deg(coo.rlat);
206 pos.lon = rad2deg(coo.rlon);
207 return pos;
208 }
209
210 #define CLICK_FUZZ (24)
211
212 static gboolean
213 on_map_button_press_event(GtkWidget *widget,
214 GdkEventButton *event, map_context_t *context) {
215 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
216
217 /* got a press event without release event? eat it! */
218 if(context->press_on != NULL) {
219 printf("PRESS: already\n");
220 return TRUE;
221 }
222
223 pos_t pos =
224 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
225
226 cache_t *nearest = map_closest(context, &pos);
227 if(nearest) {
228 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
229 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
230 context->press_on = nearest;
231 }
232
233 return FALSE;
234 }
235
236 static void
237 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
238 /* convert the pixbuf into something cairo can handle */
239
240 // Create a new ImageSurface
241 cairo_surface_t *image_surface =
242 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
243 gdk_pixbuf_get_width(buf),
244 gdk_pixbuf_get_height(buf));
245
246 // Create the new Context for the ImageSurface
247 cairo_t *context = cairo_create(image_surface);
248
249 // Draw the image on the new Context
250 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
251 cairo_paint(context);
252
253 // now draw this onto the original context
254 cairo_set_source_surface(cr, image_surface, x, y);
255
256 cairo_paint(cr);
257 }
258
259 #ifndef BIG_BALLOONS
260 #define LINE_SKIP 7
261 #else
262 #define LINE_SKIP 12
263 #endif
264
265 static void
266 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
267 cache_t *cache = (cache_t*)data;
268
269 // printf("draw cb for \"%s\"\n", cache->name);
270
271 #if 0
272 /* draw pink background to check clipping */
273 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
274 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
275 cairo_fill_preserve (cr);
276 cairo_set_line_width (cr, 0);
277 cairo_stroke (cr);
278 #endif
279
280 /* leave a little border top and left */
281 gint x = rect->x, y = rect->y;
282
283 /* draw the cache type icon ... */
284 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
285 cairo_draw_pixbuf(cr, icon, x, y);
286
287 /* ... and right of it the waypoint id */
288 cairo_text_extents_t extents;
289
290 if(cache->id) {
291 cairo_select_font_face (cr, "Sans",
292 CAIRO_FONT_SLANT_NORMAL,
293 CAIRO_FONT_WEIGHT_BOLD);
294
295 #ifndef BIG_BALLOONS
296 cairo_set_font_size (cr, 20.0);
297 #else
298 cairo_set_font_size (cr, 36.0);
299 #endif
300
301 cairo_text_extents (cr, cache->id, &extents);
302
303 /* display id right of icon vertically centered */
304 x += gdk_pixbuf_get_width(icon) + 5;
305 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
306 cairo_move_to (cr, x, y);
307 cairo_set_source_rgba (cr, 0, 0, 0, 1);
308 cairo_show_text (cr, cache->id);
309 cairo_stroke (cr);
310
311 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
312 } else
313 y += gdk_pixbuf_get_height(icon);
314
315 /* return to the left border and below icon/text */
316 x = rect->x;
317
318 /* everything from here uses the same font */
319 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
320 CAIRO_FONT_WEIGHT_NORMAL);
321 #ifndef BIG_BALLOONS
322 cairo_set_font_size (cr, 14.0);
323 #else
324 cairo_set_font_size (cr, 22.0);
325 #endif
326
327 if(cache->name) {
328 /* draw cache name */
329 cairo_text_extents (cr, cache->name, &extents);
330 y += extents.height;
331 cairo_move_to (cr, x, y);
332 cairo_set_source_rgba (cr, 0, 0, 0, 1);
333 cairo_show_text (cr, cache->name);
334 cairo_stroke (cr);
335
336 /* return to the left border and below text */
337 y += LINE_SKIP;
338 x = rect->x;
339 }
340
341 if(cache->terrain) {
342 /* draw cache rating */
343 const char *terrain = "Terrain:";
344 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
345 cairo_text_extents (cr, _(terrain), &extents);
346 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
347
348 /* draw "Terrain:" string */
349 cairo_move_to (cr, x, y);
350 cairo_set_source_rgba (cr, 0, 0, 0, 1);
351 cairo_show_text (cr, _(terrain));
352 cairo_stroke (cr);
353 x += extents.width + 2;
354
355 /* draw terrain stars */
356 cairo_draw_pixbuf(cr, icon, x, y -
357 (gdk_pixbuf_get_height(icon) + extents.height)/2);
358
359 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
360 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
361 }
362
363 if(cache->difficulty) {
364 const char *difficulty = "Difficulty:";
365 cairo_text_extents (cr, _(difficulty), &extents);
366 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
367
368 /* draw "Difficulty:" string */
369 cairo_move_to (cr, x, y);
370 cairo_set_source_rgba (cr, 0, 0, 0, 1);
371 cairo_show_text (cr, _(difficulty));
372 cairo_stroke (cr);
373 x += extents.width + 2;
374
375 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
376 cairo_draw_pixbuf(cr, icon, x, y -
377 (gdk_pixbuf_get_height(icon) + extents.height)/2);
378 }
379 }
380
381 static gboolean
382 on_map_button_release_event(GtkWidget *widget,
383 GdkEventButton *event, map_context_t *context) {
384 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
385
386 if(context->press_on) {
387 coord_t coo;
388 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
389
390 pos_t pos =
391 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
392
393 cache_t *nearest = map_closest(context, &pos);
394 if(nearest && nearest == context->press_on) {
395 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
396 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
397
398 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
399 balloon_draw_cb, nearest);
400 }
401 }
402 context->press_on = NULL;
403 } else {
404 /* save new map position */
405 gfloat lat, lon;
406 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
407 context->appdata->map.pos.lat = lat;
408 context->appdata->map.pos.lon = lon;
409 }
410
411 return FALSE;
412 }
413
414 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
415 appdata_t *appdata = context->appdata;
416
417 printf("destroy map window\n");
418
419 /* save map parameters */
420 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
421 gint zoom;
422 g_object_get(map, "zoom", &zoom, NULL);
423 context->appdata->map.zoom = zoom;
424
425 gfloat lat, lon;
426 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
427 context->appdata->map.pos.lat = lat;
428 context->appdata->map.pos.lon = lon;
429
430 #if MAEMO_VERSION_MAJOR == 5
431 /* restore cur_view */
432 context->appdata->cur_view = context->old_view;
433 #endif
434
435 gtk_timeout_remove(context->handler_id);
436
437 g_free(context);
438 appdata->map.context = NULL;
439 }
440
441 void map(appdata_t *appdata) {
442 map_context_t *context = NULL;
443
444 /* if the map window already exists, just raise it */
445 if(appdata->map.context) {
446 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
447 return;
448 }
449
450 context = appdata->map.context = g_new0(map_context_t, 1);
451 context->appdata = appdata;
452
453 char *path = g_strdup_printf("%s/map/", appdata->image_path);
454 const char *proxy = get_proxy_uri(appdata);
455
456 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
457 "map-source", MAP_SOURCE,
458 "tile-cache", path,
459 "auto-center", FALSE,
460 "record-trip-history", FALSE,
461 "show-trip-history", FALSE,
462 proxy?"proxy-uri":NULL, proxy,
463 NULL);
464
465 g_free(path);
466
467 char *name = NULL;
468 #ifdef USE_MAEMO
469 if(!appdata->cur_gpx) {
470 #endif
471 /* draw all geocaches */
472 gpx_t *gpx = appdata->gpx;
473 while(gpx) {
474 map_draw_cachelist(context->widget, gpx->cache);
475 gpx = gpx->next;
476 }
477 name = g_strdup(_("all geocaches"));
478 #ifdef USE_MAEMO
479 } else {
480 map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
481 name = g_strdup(appdata->cur_gpx->name);
482 }
483 #endif
484
485 char *title = g_strdup_printf(_("Map - %s"), name);
486 g_free(name);
487
488 #ifdef USE_MAEMO
489 #ifdef USE_STACKABLE_WINDOW
490 context->window = hildon_stackable_window_new();
491 #else
492 context->window = hildon_window_new();
493 #endif
494 #else
495 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
496 #endif
497
498 gtk_window_set_title(GTK_WINDOW(context->window), title);
499
500 #ifndef USE_MAEMO
501 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
502 #endif
503
504 g_free(title);
505
506 g_signal_connect(G_OBJECT(context->widget), "configure-event",
507 G_CALLBACK(on_map_configure), context);
508
509 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
510 G_CALLBACK(on_map_button_press_event), context);
511
512 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
513 G_CALLBACK(on_map_button_release_event), context);
514
515 /* install handler for timed updates of the gps button */
516 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
517
518 #if MAEMO_VERSION_MAJOR == 5
519 /* prevent some of the main screen things */
520 context->old_view = appdata->cur_view;
521 appdata->cur_view = NULL;
522 #endif
523
524 g_signal_connect(G_OBJECT(context->window), "destroy",
525 G_CALLBACK(on_window_destroy), context);
526
527 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
528 gtk_widget_show_all(GTK_WIDGET(context->window));
529 }