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

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Revision 65 - (show annotations)
Wed Aug 19 14:21:14 2009 UTC (14 years, 8 months ago) by harbaum
File MIME type: text/plain
File size: 15045 byte(s) 
Everything's bigger on maemo
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 /* TODO: This needs to be wired to the GPS button in osm_gps_map */
70 #if 0
71 static gboolean
72 cb_map_gps(GtkButton *button, map_context_t *context) {
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 return FALSE;
84 }
85 #endif
86
87 static int dist2pixel(map_context_t *context, float km, float lat) {
88 return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
89 }
90
91 static gboolean map_gps_update(gpointer data) {
92 map_context_t *context = (map_context_t*)data;
93
94 /* get reference position ... */
95 pos_t *refpos = get_pos(context->appdata);
96 gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
97
98 /* ... and enable "goto" button if it's valid */
99 /* TODO: gtk_widget_set_sensitive(context->gps, ok); */
100
101 if(ok) {
102 float heading = NAN;
103 int radius = 0;
104
105 if(context->appdata->use_gps) {
106 heading = gps_get_heading(context->appdata);
107
108 /* get error */
109 float eph = gps_get_eph(context->appdata);
110 if(!isnan(eph))
111 radius = dist2pixel(context, eph/1000, refpos->lat);
112 }
113
114 g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
115 osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
116 refpos->lat, refpos->lon, heading);
117 } else
118 osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
119
120 return TRUE;
121 }
122
123 static gboolean on_map_configure(GtkWidget *widget,
124 GdkEventConfigure *event,
125 map_context_t *context) {
126
127 /* set default values if they are invalid */
128 if(!context->appdata->map.zoom ||
129 isnan(context->appdata->map.pos.lat) ||
130 isnan(context->appdata->map.pos.lon)) {
131 printf("no valid map position found\n");
132
133 pos_t *refpos = get_pos(context->appdata);
134 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
135 /* use gps position if present */
136 context->appdata->map.pos = *refpos;
137 context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
138 } else {
139 /* use world map otherwise */
140 context->appdata->map.pos.lat = 0.0;
141 context->appdata->map.pos.lon = 0.0;
142 context->appdata->map.zoom = 1;
143 }
144 }
145
146 /* jump to initial position */
147 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
148 context->appdata->map.pos.lat,
149 context->appdata->map.pos.lon,
150 context->appdata->map.zoom);
151
152 return FALSE;
153 }
154
155 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
156 while(cache) {
157 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
158
159 osm_gps_map_add_image(OSM_GPS_MAP(map),
160 cache->pos.lat, cache->pos.lon, icon);
161
162 cache = cache->next;
163 }
164 }
165
166 static void
167 map_cachelist_nearest(cache_t *cache, pos_t *pos,
168 cache_t **result, float *distance) {
169 while(cache) {
170 float dist =
171 pow(cache->pos.lat - pos->lat, 2) +
172 pow(cache->pos.lon - pos->lon, 2);
173
174 if(!(dist > *distance)) {
175 *result = cache;
176 *distance = dist;
177 }
178
179 cache = cache->next;
180 }
181 }
182
183 static cache_t *map_closest(map_context_t *context, pos_t *pos) {
184 cache_t *result = NULL;
185 float distance = NAN;
186
187 #ifdef USE_MAEMO
188 if(!context->appdata->cur_gpx) {
189 #endif
190 /* search all geocaches */
191 gpx_t *gpx = context->appdata->gpx;
192 while(gpx) {
193 map_cachelist_nearest(gpx->cache, pos, &result, &distance);
194 gpx = gpx->next;
195 }
196 #ifdef USE_MAEMO
197 } else {
198 map_cachelist_nearest(context->appdata->cur_gpx->cache,
199 pos, &result, &distance);
200 }
201 #endif
202
203 return result;
204 }
205
206 /* translate between osm-gps-map positions and gpxview ones */
207 pos_t coord2pos(coord_t coo) {
208 pos_t pos;
209 pos.lat = rad2deg(coo.rlat);
210 pos.lon = rad2deg(coo.rlon);
211 return pos;
212 }
213
214 #define CLICK_FUZZ (24)
215
216 static gboolean
217 on_map_button_press_event(GtkWidget *widget,
218 GdkEventButton *event, map_context_t *context) {
219 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
220
221 /* got a press event without release event? eat it! */
222 if(context->press_on != NULL) {
223 printf("PRESS: already\n");
224 return TRUE;
225 }
226
227 pos_t pos =
228 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
229
230 cache_t *nearest = map_closest(context, &pos);
231 if(nearest) {
232 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
233 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
234 context->press_on = nearest;
235 }
236
237 return FALSE;
238 }
239
240 static void
241 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
242 /* convert the pixbuf into something cairo can handle */
243
244 // Create a new ImageSurface
245 cairo_surface_t *image_surface =
246 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
247 gdk_pixbuf_get_width(buf),
248 gdk_pixbuf_get_height(buf));
249
250 // Create the new Context for the ImageSurface
251 cairo_t *context = cairo_create(image_surface);
252
253 // Draw the image on the new Context
254 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
255 cairo_paint(context);
256
257 // now draw this onto the original context
258 cairo_set_source_surface(cr, image_surface, x, y);
259
260 cairo_paint(cr);
261 }
262
263 #ifndef BIG_BALLOONS
264 #define LINE_SKIP 7
265 #else
266 #define LINE_SKIP 12
267 #endif
268
269 static void
270 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
271 cache_t *cache = (cache_t*)data;
272
273 // printf("draw cb for \"%s\"\n", cache->name);
274
275 #if 0
276 /* draw pink background to check clipping */
277 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
278 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
279 cairo_fill_preserve (cr);
280 cairo_set_line_width (cr, 0);
281 cairo_stroke (cr);
282 #endif
283
284 /* leave a little border top and left */
285 gint x = rect->x, y = rect->y;
286
287 /* draw the cache type icon ... */
288 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
289 cairo_draw_pixbuf(cr, icon, x, y);
290
291 /* ... and right of it the waypoint id */
292 cairo_text_extents_t extents;
293
294 if(cache->id) {
295 cairo_select_font_face (cr, "Sans",
296 CAIRO_FONT_SLANT_NORMAL,
297 CAIRO_FONT_WEIGHT_BOLD);
298
299 #ifndef BIG_BALLOONS
300 cairo_set_font_size (cr, 20.0);
301 #else
302 cairo_set_font_size (cr, 36.0);
303 #endif
304
305 cairo_text_extents (cr, cache->id, &extents);
306
307 /* display id right of icon vertically centered */
308 x += gdk_pixbuf_get_width(icon) + 5;
309 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
310 cairo_move_to (cr, x, y);
311 cairo_set_source_rgba (cr, 0, 0, 0, 1);
312 cairo_show_text (cr, cache->id);
313 cairo_stroke (cr);
314
315 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
316 } else
317 y += gdk_pixbuf_get_height(icon);
318
319 /* return to the left border and below icon/text */
320 x = rect->x;
321
322 /* everything from here uses the same font */
323 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
324 CAIRO_FONT_WEIGHT_NORMAL);
325 #ifndef BIG_BALLOONS
326 cairo_set_font_size (cr, 14.0);
327 #else
328 cairo_set_font_size (cr, 24.0);
329 #endif
330
331 if(cache->name) {
332 /* draw cache name */
333 cairo_text_extents (cr, cache->name, &extents);
334 y += extents.height;
335 cairo_move_to (cr, x, y);
336 cairo_set_source_rgba (cr, 0, 0, 0, 1);
337 cairo_show_text (cr, cache->name);
338 cairo_stroke (cr);
339
340 /* return to the left border and below text */
341 y += LINE_SKIP;
342 x = rect->x;
343 }
344
345 if(cache->terrain) {
346 /* draw cache rating */
347 const char *terrain = "Terrain:";
348 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
349 cairo_text_extents (cr, _(terrain), &extents);
350 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
351
352 /* draw "Terrain:" string */
353 cairo_move_to (cr, x, y);
354 cairo_set_source_rgba (cr, 0, 0, 0, 1);
355 cairo_show_text (cr, _(terrain));
356 cairo_stroke (cr);
357 x += extents.width + 2;
358
359 /* draw terrain stars */
360 cairo_draw_pixbuf(cr, icon, x, y -
361 (gdk_pixbuf_get_height(icon) + extents.height)/2);
362
363 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
364 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
365 }
366
367 if(cache->difficulty) {
368 const char *difficulty = "Difficulty:";
369 cairo_text_extents (cr, _(difficulty), &extents);
370 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
371
372 /* draw "Difficulty:" string */
373 cairo_move_to (cr, x, y);
374 cairo_set_source_rgba (cr, 0, 0, 0, 1);
375 cairo_show_text (cr, _(difficulty));
376 cairo_stroke (cr);
377 x += extents.width + 2;
378
379 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
380 cairo_draw_pixbuf(cr, icon, x, y -
381 (gdk_pixbuf_get_height(icon) + extents.height)/2);
382 }
383 }
384
385 static gboolean
386 on_map_button_release_event(GtkWidget *widget,
387 GdkEventButton *event, map_context_t *context) {
388 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
389
390 if(context->press_on) {
391 coord_t coo;
392 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
393
394 pos_t pos =
395 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
396
397 cache_t *nearest = map_closest(context, &pos);
398 if(nearest && nearest == context->press_on) {
399 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
400 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
401
402 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
403 balloon_draw_cb, nearest);
404 }
405 }
406 context->press_on = NULL;
407 } else {
408 /* save new map position */
409 gfloat lat, lon;
410 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
411 context->appdata->map.pos.lat = lat;
412 context->appdata->map.pos.lon = lon;
413 }
414
415 return FALSE;
416 }
417
418 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
419 appdata_t *appdata = context->appdata;
420
421 printf("destroy map window\n");
422
423 /* save map parameters */
424 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
425 gint zoom;
426 g_object_get(map, "zoom", &zoom, NULL);
427 context->appdata->map.zoom = zoom;
428
429 gfloat lat, lon;
430 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
431 context->appdata->map.pos.lat = lat;
432 context->appdata->map.pos.lon = lon;
433
434 #if MAEMO_VERSION_MAJOR == 5
435 /* restore cur_view */
436 context->appdata->cur_view = context->old_view;
437 #endif
438
439 gtk_timeout_remove(context->handler_id);
440
441 g_free(context);
442 appdata->map.context = NULL;
443 }
444
445 void map(appdata_t *appdata) {
446 map_context_t *context = NULL;
447
448 /* if the map window already exists, just raise it */
449 if(appdata->map.context) {
450 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
451 return;
452 }
453
454 context = appdata->map.context = g_new0(map_context_t, 1);
455 context->appdata = appdata;
456
457 char *path = g_strdup_printf("%s/map/", appdata->image_path);
458 const char *proxy = get_proxy_uri(appdata);
459
460 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
461 "map-source", MAP_SOURCE,
462 "tile-cache", path,
463 "auto-center", FALSE,
464 "record-trip-history", FALSE,
465 "show-trip-history", FALSE,
466 proxy?"proxy-uri":NULL, proxy,
467 NULL);
468
469 g_free(path);
470
471 char *name = NULL;
472 #ifdef USE_MAEMO
473 if(!appdata->cur_gpx) {
474 #endif
475 /* draw all geocaches */
476 gpx_t *gpx = appdata->gpx;
477 while(gpx) {
478 map_draw_cachelist(context->widget, gpx->cache);
479 gpx = gpx->next;
480 }
481 name = g_strdup(_("all geocaches"));
482 #ifdef USE_MAEMO
483 } else {
484 map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
485 name = g_strdup(appdata->cur_gpx->name);
486 }
487 #endif
488
489 char *title = g_strdup_printf(_("Map - %s"), name);
490 g_free(name);
491
492 #ifdef USE_MAEMO
493 #ifdef USE_STACKABLE_WINDOW
494 context->window = hildon_stackable_window_new();
495 #else
496 context->window = hildon_window_new();
497 #endif
498 #else
499 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
500 #endif
501
502 gtk_window_set_title(GTK_WINDOW(context->window), title);
503
504 #ifndef USE_MAEMO
505 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
506 #endif
507
508 g_free(title);
509
510 g_signal_connect(G_OBJECT(context->widget), "configure-event",
511 G_CALLBACK(on_map_configure), context);
512
513 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
514 G_CALLBACK(on_map_button_press_event), context);
515
516 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
517 G_CALLBACK(on_map_button_release_event), context);
518
519 /* TODO: gtk_widget_set_sensitive(context->gps, FALSE); */
520
521 /* install handler for timed updates of the gps button */
522 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
523
524 #if MAEMO_VERSION_MAJOR == 5
525 /* prevent some of the main screen things */
526 context->old_view = appdata->cur_view;
527 appdata->cur_view = NULL;
528 #endif
529
530 g_signal_connect(G_OBJECT(context->window), "destroy",
531 G_CALLBACK(on_window_destroy), context);
532
533 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
534 gtk_widget_show_all(GTK_WIDGET(context->window));
535 }