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

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Revision 84 - (show annotations)
Fri Aug 28 07:52:01 2009 UTC (14 years, 8 months ago) by harbaum
File MIME type: text/plain
File size: 17139 byte(s) 
Removed Openaerialmap, added opencyclemap
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 #if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
30 #include <gdk/gdkx.h>
31 #include <X11/Xatom.h>
32 #endif
33
34 // #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP
35 #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENCYCLEMAP
36 #define GPS_DEFAULT_ZOOM 13
37
38 #define PROXY_KEY "/system/http_proxy/"
39
40 static const char *get_proxy_uri(appdata_t *appdata) {
41 static char proxy_buffer[64] = "";
42
43 /* use environment settings if preset */
44 const char *proxy = g_getenv("http_proxy");
45 if(proxy) {
46 printf("http_proxy: %s\n", proxy);
47 return proxy;
48 }
49
50 /* ------------- get proxy settings -------------------- */
51 if(gconf_client_get_bool(appdata->gconf_client,
52 PROXY_KEY "use_http_proxy", NULL)) {
53
54 /* we can savely ignore things like "ignore_hosts" since we */
55 /* are pretty sure not inside the net of one of our map renderers */
56 /* (unless the user works at google :-) */
57
58 /* get basic settings */
59 char *host =
60 gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
61 if(host) {
62 int port =
63 gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
64
65 snprintf(proxy_buffer, sizeof(proxy_buffer),
66 "http://%s:%u", host, port);
67
68 g_free(host);
69 }
70 return proxy_buffer;
71 }
72
73 return NULL;
74 }
75
76 static void
77 cb_map_gps(osd_button_t but, map_context_t *context) {
78 if(but == OSD_GPS) {
79 pos_t *refpos = get_pos(context->appdata);
80 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
81 gint zoom;
82 g_object_get(OSM_GPS_MAP(context->widget), "zoom", &zoom, NULL);
83 if(zoom < 10)
84 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
85 refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
86 else
87 osm_gps_map_set_center(OSM_GPS_MAP(context->widget),
88 refpos->lat, refpos->lon);
89
90 /* re-enable centering */
91 g_object_set(context->widget, "auto-center", TRUE, NULL);
92 } else {
93 /* no coordinates given: display the entire world */
94 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
95 0.0, 0.0, 1);
96 }
97 }
98 }
99
100 static int dist2pixel(map_context_t *context, float km, float lat) {
101 return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
102 }
103
104 static gboolean map_gps_update(gpointer data) {
105 map_context_t *context = (map_context_t*)data;
106
107 /* get reference position ... */
108 pos_t *refpos = get_pos(context->appdata);
109 gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
110
111 /* ... and enable "goto" button if it's valid */
112 osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
113 OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);
114
115 if(ok) {
116 float heading = NAN;
117 int radius = 0;
118
119 if(context->appdata->use_gps) {
120 heading = gps_get_heading(context->appdata);
121
122 /* get error */
123 float eph = gps_get_eph(context->appdata);
124 if(!isnan(eph))
125 radius = dist2pixel(context, eph/1000, refpos->lat);
126 }
127
128 g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
129 osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
130 refpos->lat, refpos->lon, heading);
131 } else
132 osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
133
134 return TRUE;
135 }
136
137 static gboolean on_map_configure(GtkWidget *widget,
138 GdkEventConfigure *event,
139 map_context_t *context) {
140
141 /* set default values if they are invalid */
142 if(!context->appdata->map.zoom ||
143 isnan(context->appdata->map.pos.lat) ||
144 isnan(context->appdata->map.pos.lon)) {
145 printf("no valid map position found\n");
146
147 pos_t *refpos = get_pos(context->appdata);
148 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
149 /* use gps position if present */
150 context->appdata->map.pos = *refpos;
151 context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
152 } else {
153 /* use world map otherwise */
154 context->appdata->map.pos.lat = 0.0;
155 context->appdata->map.pos.lon = 0.0;
156 context->appdata->map.zoom = 1;
157 }
158 }
159
160 /* jump to initial position */
161 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
162 context->appdata->map.pos.lat,
163 context->appdata->map.pos.lon,
164 context->appdata->map.zoom);
165
166 return FALSE;
167 }
168
169 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
170 while(cache) {
171 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
172
173 osm_gps_map_add_image(OSM_GPS_MAP(map),
174 cache->pos.lat, cache->pos.lon, icon);
175
176 cache = cache->next;
177 }
178 }
179
180 static void
181 map_cachelist_nearest(cache_t *cache, pos_t *pos,
182 cache_t **result, float *distance) {
183 while(cache) {
184 float dist =
185 pow(cache->pos.lat - pos->lat, 2) +
186 pow(cache->pos.lon - pos->lon, 2);
187
188 if(!(dist > *distance)) {
189 *result = cache;
190 *distance = dist;
191 }
192
193 cache = cache->next;
194 }
195 }
196
197 static cache_t *map_closest(map_context_t *context, pos_t *pos) {
198 cache_t *result = NULL;
199 float distance = NAN;
200
201 #ifdef USE_MAEMO
202 if(!context->appdata->cur_gpx) {
203 #endif
204 /* search all geocaches */
205 gpx_t *gpx = context->appdata->gpx;
206 while(gpx) {
207 map_cachelist_nearest(gpx->cache, pos, &result, &distance);
208 gpx = gpx->next;
209 }
210 #ifdef USE_MAEMO
211 } else {
212 map_cachelist_nearest(context->appdata->cur_gpx->cache,
213 pos, &result, &distance);
214 }
215 #endif
216
217 return result;
218 }
219
220 /* translate between osm-gps-map positions and gpxview ones */
221 pos_t coord2pos(coord_t coo) {
222 pos_t pos;
223 pos.lat = rad2deg(coo.rlat);
224 pos.lon = rad2deg(coo.rlon);
225 return pos;
226 }
227
228 #define CLICK_FUZZ (24)
229
230 static gboolean
231 on_map_button_press_event(GtkWidget *widget,
232 GdkEventButton *event, map_context_t *context) {
233 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
234
235 /* got a press event without release event? eat it! */
236 if(context->press_on != NULL) {
237 printf("PRESS: already\n");
238 return TRUE;
239 }
240
241 pos_t pos =
242 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
243
244 cache_t *nearest = map_closest(context, &pos);
245 if(nearest) {
246 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
247 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
248 context->press_on = nearest;
249 }
250
251 return FALSE;
252 }
253
254 static void
255 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
256 /* convert the pixbuf into something cairo can handle */
257
258 // Create a new ImageSurface
259 cairo_surface_t *image_surface =
260 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
261 gdk_pixbuf_get_width(buf),
262 gdk_pixbuf_get_height(buf));
263
264 // Create the new Context for the ImageSurface
265 cairo_t *context = cairo_create(image_surface);
266
267 // Draw the image on the new Context
268 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
269 cairo_paint(context);
270
271 // now draw this onto the original context
272 cairo_set_source_surface(cr, image_surface, x, y);
273
274 cairo_paint(cr);
275 }
276
277 #ifndef BIG_BALLOONS
278 #define LINE_SKIP 7
279 #else
280 #define LINE_SKIP 12
281 #endif
282
283 static void
284 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
285 cache_t *cache = (cache_t*)data;
286
287 #if 0
288 /* draw pink background to check clipping */
289 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
290 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
291 cairo_fill_preserve (cr);
292 cairo_set_line_width (cr, 0);
293 cairo_stroke (cr);
294 #endif
295
296 /* leave a little border top and left */
297 gint x = rect->x, y = rect->y;
298
299 /* draw the cache type icon ... */
300 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
301 cairo_draw_pixbuf(cr, icon, x, y);
302
303 /* ... and right of it the waypoint id */
304 cairo_text_extents_t extents;
305
306 if(cache->id) {
307 cairo_select_font_face (cr, "Sans",
308 CAIRO_FONT_SLANT_NORMAL,
309 CAIRO_FONT_WEIGHT_BOLD);
310
311 #ifndef BIG_BALLOONS
312 cairo_set_font_size (cr, 20.0);
313 #else
314 cairo_set_font_size (cr, 36.0);
315 #endif
316
317 cairo_text_extents (cr, cache->id, &extents);
318
319 /* display id right of icon vertically centered */
320 x += gdk_pixbuf_get_width(icon) + 5;
321 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
322 cairo_move_to (cr, x, y);
323 cairo_set_source_rgba (cr, 0, 0, 0, 1);
324 cairo_show_text (cr, cache->id);
325 cairo_stroke (cr);
326
327 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
328 } else
329 y += gdk_pixbuf_get_height(icon);
330
331 /* return to the left border and below icon/text */
332 x = rect->x;
333
334 /* everything from here uses the same font */
335 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
336 CAIRO_FONT_WEIGHT_NORMAL);
337 #ifndef BIG_BALLOONS
338 cairo_set_font_size (cr, 14.0);
339 #else
340 cairo_set_font_size (cr, 22.0);
341 #endif
342
343 if(cache->name) {
344 /* draw cache name */
345 cairo_text_extents (cr, cache->name, &extents);
346 y += extents.height;
347 cairo_move_to (cr, x, y);
348 cairo_set_source_rgba (cr, 0, 0, 0, 1);
349 cairo_show_text (cr, cache->name);
350 cairo_stroke (cr);
351
352 /* return to the left border and below text */
353 y += LINE_SKIP;
354 x = rect->x;
355 }
356
357 if(cache->terrain) {
358 /* draw cache rating */
359 const char *terrain = "Terrain:";
360 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
361 cairo_text_extents (cr, _(terrain), &extents);
362 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
363
364 /* draw "Terrain:" string */
365 cairo_move_to (cr, x, y);
366 cairo_set_source_rgba (cr, 0, 0, 0, 1);
367 cairo_show_text (cr, _(terrain));
368 cairo_stroke (cr);
369 x += extents.width + 2;
370
371 /* draw terrain stars */
372 cairo_draw_pixbuf(cr, icon, x, y -
373 (gdk_pixbuf_get_height(icon) + extents.height)/2);
374
375 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
376 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
377 }
378
379 if(cache->difficulty) {
380 const char *difficulty = "Difficulty:";
381 cairo_text_extents (cr, _(difficulty), &extents);
382 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
383
384 /* draw "Difficulty:" string */
385 cairo_move_to (cr, x, y);
386 cairo_set_source_rgba (cr, 0, 0, 0, 1);
387 cairo_show_text (cr, _(difficulty));
388 cairo_stroke (cr);
389 x += extents.width + 2;
390
391 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
392 cairo_draw_pixbuf(cr, icon, x, y -
393 (gdk_pixbuf_get_height(icon) + extents.height)/2);
394 }
395 }
396
397 static gboolean
398 on_map_button_release_event(GtkWidget *widget,
399 GdkEventButton *event, map_context_t *context) {
400 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
401
402 if(context->press_on) {
403 coord_t coo;
404 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
405
406 pos_t pos =
407 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
408
409 cache_t *nearest = map_closest(context, &pos);
410 if(nearest && nearest == context->press_on) {
411 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
412 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
413
414 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
415 balloon_draw_cb, nearest);
416 }
417 }
418 context->press_on = NULL;
419 } else {
420 /* save new map position */
421 gfloat lat, lon;
422 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
423 context->appdata->map.pos.lat = lat;
424 context->appdata->map.pos.lon = lon;
425 }
426
427 return FALSE;
428 }
429
430 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
431 appdata_t *appdata = context->appdata;
432
433 printf("destroy map window\n");
434
435 /* save map parameters */
436 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
437 gint zoom;
438 g_object_get(map, "zoom", &zoom, NULL);
439 context->appdata->map.zoom = zoom;
440
441 gfloat lat, lon;
442 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
443 context->appdata->map.pos.lat = lat;
444 context->appdata->map.pos.lon = lon;
445
446 #if MAEMO_VERSION_MAJOR == 5
447 /* restore cur_view */
448 context->appdata->cur_view = context->old_view;
449 #endif
450
451 gtk_timeout_remove(context->handler_id);
452
453 g_free(context);
454 appdata->map.context = NULL;
455 }
456
457 #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
458 /* get access to zoom buttons */
459 static void
460 on_window_realize(GtkWidget *widget, gpointer data) {
461 if (widget->window) {
462 unsigned char value = 1;
463 Atom hildon_zoom_key_atom =
464 gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
465 integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
466 Display *dpy =
467 GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
468 Window w = GDK_WINDOW_XID(widget->window);
469
470 XChangeProperty(dpy, w, hildon_zoom_key_atom,
471 integer_atom, 8, PropModeReplace, &value, 1);
472 }
473 }
474 #endif
475
476 void map(appdata_t *appdata) {
477 map_context_t *context = NULL;
478
479 /* if the map window already exists, just raise it */
480 if(appdata->map.context) {
481 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
482 return;
483 }
484
485 context = appdata->map.context = g_new0(map_context_t, 1);
486 context->appdata = appdata;
487
488 /* cleanup old (pre 0.8.7) path if it exists */
489 char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
490 if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
491 printf("old file path %s exists\n", old_path);
492 rmdir_recursive(old_path);
493 }
494
495 /* It is recommanded that all applications share these same */
496 /* map path, so data is only cached once. The path should be: */
497 /* ~/.osm-gps-map on standard PC (users home) */
498 /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
499 /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
500 #if !defined(USE_MAEMO)
501 char *p = getenv("HOME");
502 if(!p) p = "/tmp";
503 char *path = g_strdup_printf("%s/.osm-gps-map", p);
504 #else
505 #if MAEMO_VERSION_MAJOR == 5
506 char *path = g_strdup("/home/user/.osm-gps-map");
507 #else
508 char *path = g_strdup("/media/mmc2/osm-gps-map");
509 #endif
510 #endif
511
512 const char *proxy = get_proxy_uri(appdata);
513
514 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
515 "map-source", MAP_SOURCE,
516 "tile-cache", path,
517 "auto-center", FALSE,
518 "record-trip-history", FALSE,
519 "show-trip-history", FALSE,
520 proxy?"proxy-uri":NULL, proxy,
521 NULL);
522
523 g_free(path);
524
525 osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
526
527 char *name = NULL;
528 #ifdef USE_MAEMO
529 if(!appdata->cur_gpx) {
530 #endif
531 /* draw all geocaches */
532 gpx_t *gpx = appdata->gpx;
533 while(gpx) {
534 map_draw_cachelist(context->widget, gpx->cache);
535 gpx = gpx->next;
536 }
537 name = g_strdup(_("all geocaches"));
538 #ifdef USE_MAEMO
539 } else {
540 map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
541 name = g_strdup(appdata->cur_gpx->name);
542 }
543 #endif
544
545 char *title = g_strdup_printf(_("Map - %s"), name);
546 g_free(name);
547
548 #ifdef USE_MAEMO
549 #ifdef USE_STACKABLE_WINDOW
550 context->window = hildon_stackable_window_new();
551 /* try to enable the zoom buttons. don't do this on x86 as it breaks */
552 /* at runtime with cygwin x */
553 #ifndef __i386__
554 g_signal_connect(G_OBJECT(context->window), "realize",
555 G_CALLBACK(on_window_realize), NULL);
556 #endif // MAEMO_VERSION
557 #else
558 context->window = hildon_window_new();
559 #endif
560 #else
561 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
562 #endif
563
564 gtk_window_set_title(GTK_WINDOW(context->window), title);
565
566 #ifndef USE_MAEMO
567 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
568 #endif
569
570 g_free(title);
571
572 g_signal_connect(G_OBJECT(context->widget), "configure-event",
573 G_CALLBACK(on_map_configure), context);
574
575 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
576 G_CALLBACK(on_map_button_press_event), context);
577
578 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
579 G_CALLBACK(on_map_button_release_event), context);
580
581 /* install handler for timed updates of the gps button */
582 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
583
584 #if MAEMO_VERSION_MAJOR == 5
585 /* prevent some of the main screen things */
586 context->old_view = appdata->cur_view;
587 appdata->cur_view = NULL;
588 #endif
589
590 g_signal_connect(G_OBJECT(context->window), "destroy",
591 G_CALLBACK(on_window_destroy), context);
592
593 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
594 gtk_widget_show_all(GTK_WIDGET(context->window));
595 }