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

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Revision 123 - (show annotations)
Wed Sep 23 11:23:45 2009 UTC (14 years, 7 months ago) by harbaum
File MIME type: text/plain
File size: 18791 byte(s) 
OSD handling
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 /*
21 * http://topo.geofabrik.de/relief/${z}/${x}/${y}.png 8-15
22 * http://topo.geofabrik.de/trail/${z}/${x}/${y}.png 8-15
23 */
24
25 #include "gpxview.h"
26 #include "converter.h"
27 #include <math.h> // for isnan
28
29 #ifdef ENABLE_OSM_GPS_MAP
30 #include "osm-gps-map.h"
31 #include "osm-gps-map-osd-classic.h"
32 #endif
33
34 #if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
35 #include <gdk/gdkx.h>
36 #include <X11/Xatom.h>
37 #endif
38
39 /* default values */
40 #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENCYCLEMAP
41 #define GPS_DEFAULT_ZOOM 13
42
43 #define PROXY_KEY "/system/http_proxy/"
44
45 static const char *get_proxy_uri(appdata_t *appdata) {
46 static char proxy_buffer[64] = "";
47
48 /* use environment settings if preset */
49 const char *proxy = g_getenv("http_proxy");
50 if(proxy) {
51 printf("http_proxy: %s\n", proxy);
52 return proxy;
53 }
54
55 /* ------------- get proxy settings -------------------- */
56 if(gconf_client_get_bool(appdata->gconf_client,
57 PROXY_KEY "use_http_proxy", NULL)) {
58
59 /* we can savely ignore things like "ignore_hosts" since we */
60 /* are pretty sure not inside the net of one of our map renderers */
61 /* (unless the user works at google :-) */
62
63 /* get basic settings */
64 char *host =
65 gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
66 if(host) {
67 int port =
68 gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
69
70 snprintf(proxy_buffer, sizeof(proxy_buffer),
71 "http://%s:%u", host, port);
72
73 g_free(host);
74 }
75 return proxy_buffer;
76 }
77
78 return NULL;
79 }
80
81 static void
82 cb_map_gps(osd_button_t but, map_context_t *context) {
83 if(but == OSD_GPS) {
84 pos_t *refpos = get_pos(context->appdata);
85 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
86 gint zoom;
87 g_object_get(OSM_GPS_MAP(context->widget), "zoom", &zoom, NULL);
88 if(zoom < 10)
89 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
90 refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
91 else
92 osm_gps_map_set_center(OSM_GPS_MAP(context->widget),
93 refpos->lat, refpos->lon);
94
95 /* re-enable centering */
96 g_object_set(context->widget, "auto-center", TRUE, NULL);
97 } else {
98 /* no coordinates given: display the entire world */
99 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
100 0.0, 0.0, 1);
101 }
102 }
103 }
104
105 static int dist2pixel(map_context_t *context, float km, float lat) {
106 return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
107 }
108
109 static gboolean map_gps_update(gpointer data) {
110 map_context_t *context = (map_context_t*)data;
111
112 /* get reference position ... */
113 pos_t *refpos = get_pos(context->appdata);
114 gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
115
116 /* ... and enable "goto" button if it's valid */
117 osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
118 OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);
119
120 if(ok) {
121 float heading = NAN;
122 int radius = 0;
123
124 if(context->appdata->use_gps) {
125 heading = gps_get_heading(context->appdata);
126
127 /* get error */
128 float eph = gps_get_eph(context->appdata);
129 if(!isnan(eph))
130 radius = dist2pixel(context, eph/1000, refpos->lat);
131 }
132
133 g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
134 osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
135 refpos->lat, refpos->lon, heading);
136 } else
137 osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
138
139 return TRUE;
140 }
141
142 static gboolean on_map_configure(GtkWidget *widget,
143 GdkEventConfigure *event,
144 map_context_t *context) {
145
146 if(!context->map_complete) {
147
148 /* set default values if they are invalid */
149 if(!context->appdata->map.zoom ||
150 isnan(context->appdata->map.pos.lat) ||
151 isnan(context->appdata->map.pos.lon)) {
152 printf("no valid map position found\n");
153
154 pos_t *refpos = get_pos(context->appdata);
155 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
156 /* use gps position if present */
157 context->appdata->map.pos = *refpos;
158 context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
159 } else {
160 /* use world map otherwise */
161 context->appdata->map.pos.lat = 0.0;
162 context->appdata->map.pos.lon = 0.0;
163 context->appdata->map.zoom = 1;
164 }
165 }
166
167 /* jump to initial position */
168 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
169 context->appdata->map.pos.lat,
170 context->appdata->map.pos.lon,
171 context->appdata->map.zoom);
172 context->map_complete = TRUE;
173 }
174
175 return FALSE;
176 }
177
178 static void map_draw_cache(GtkWidget *map, cache_t *cache) {
179 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
180
181 /* check if there's also an overwritten coordinate */
182 if(cache->notes && cache->notes->override) {
183 GdkPixbuf *over = icon_get(ICON_MISC, 1);
184
185 osm_gps_map_add_image(OSM_GPS_MAP(map),
186 cache->notes->pos.lat, cache->notes->pos.lon, icon);
187
188 osm_gps_map_add_image(OSM_GPS_MAP(map),
189 cache->notes->pos.lat, cache->notes->pos.lon, over);
190 } else
191 osm_gps_map_add_image(OSM_GPS_MAP(map),
192 cache->pos.lat, cache->pos.lon, icon);
193
194 }
195
196 static void map_draw_gpx(appdata_t *appdata, GtkWidget *map, gpx_t *gpx) {
197 if(!gpx->notes_loaded) {
198 notes_load_all(appdata, gpx);
199 gpx->notes_loaded = TRUE;
200 }
201
202 cache_t *cache = gpx->cache;
203 while(cache) {
204 map_draw_cache(map, cache);
205 cache = cache->next;
206 }
207 }
208
209 static void
210 map_cachelist_nearest(cache_t *cache, pos_t *pos,
211 cache_t **result, float *distance) {
212 while(cache) {
213 pos_t cpos = gpx_cache_pos(cache);
214
215 float dist =
216 pow(cpos.lat - pos->lat, 2) +
217 pow(cpos.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 && !context->appdata->cur_cache) {
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 if(context->appdata->cur_gpx) {
243 map_cachelist_nearest(context->appdata->cur_gpx->cache,
244 pos, &result, &distance);
245 } else
246 result = context->appdata->cur_gpx->cache;
247 #endif
248
249 return result;
250 }
251
252 /* translate between osm-gps-map positions and gpxview ones */
253 pos_t coord2pos(coord_t coo) {
254 pos_t pos;
255 pos.lat = rad2deg(coo.rlat);
256 pos.lon = rad2deg(coo.rlon);
257 return pos;
258 }
259
260 #define CLICK_FUZZ (24)
261
262 static gboolean
263 on_map_button_press_event(GtkWidget *widget,
264 GdkEventButton *event, map_context_t *context) {
265 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
266
267 /* check if we actually clicked parts of the OSD */
268 if(osm_gps_map_osd_check(map, event->x, event->y) != OSD_NONE)
269 return FALSE;
270
271 /* got a press event without release event? eat it! */
272 if(context->press_on != NULL) {
273 printf("PRESS: already\n");
274 return FALSE;
275 }
276
277 pos_t pos =
278 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
279
280 cache_t *nearest = map_closest(context, &pos);
281 if(nearest) {
282 pos_t cpos = gpx_cache_pos(nearest);
283
284 float dist = gpx_pos_get_distance(pos, cpos, FALSE);
285 if(dist2pixel(context, dist, cpos.lat) < CLICK_FUZZ)
286 context->press_on = nearest;
287 }
288
289 return FALSE;
290 }
291
292 static void
293 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
294 /* convert the pixbuf into something cairo can handle */
295
296 // Create a new ImageSurface
297 cairo_surface_t *image_surface =
298 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
299 gdk_pixbuf_get_width(buf),
300 gdk_pixbuf_get_height(buf));
301
302 // Create the new Context for the ImageSurface
303 cairo_t *context = cairo_create(image_surface);
304
305 // Draw the image on the new Context
306 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
307 cairo_paint(context);
308
309 // now draw this onto the original context
310 cairo_set_source_surface(cr, image_surface, x, y);
311
312 cairo_paint(cr);
313 }
314
315 #ifndef BIG_BALLOONS
316 #define LINE_SKIP 7
317 #else
318 #define LINE_SKIP 12
319 #endif
320
321 static void
322 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
323 cache_t *cache = (cache_t*)data;
324
325 #if 0
326 /* draw pink background to check clipping */
327 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
328 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
329 cairo_fill_preserve (cr);
330 cairo_set_line_width (cr, 0);
331 cairo_stroke (cr);
332 #endif
333
334 /* leave a little border top and left */
335 gint x = rect->x, y = rect->y;
336
337 /* draw the cache type icon ... */
338 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
339 cairo_draw_pixbuf(cr, icon, x, y);
340
341 if(cache->notes && cache->notes->override) {
342 GdkPixbuf *over = icon_get(ICON_MISC, 1);
343 cairo_draw_pixbuf(cr, over, x, y);
344 }
345
346 /* ... and right of it the waypoint id */
347 cairo_text_extents_t extents;
348
349 if(cache->id) {
350 cairo_select_font_face (cr, "Sans",
351 CAIRO_FONT_SLANT_NORMAL,
352 CAIRO_FONT_WEIGHT_BOLD);
353
354 #ifndef BIG_BALLOONS
355 cairo_set_font_size (cr, 20.0);
356 #else
357 cairo_set_font_size (cr, 36.0);
358 #endif
359
360 cairo_text_extents (cr, cache->id, &extents);
361
362 /* display id right of icon vertically centered */
363 x += gdk_pixbuf_get_width(icon) + 5;
364 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
365 cairo_move_to (cr, x, y);
366 cairo_set_source_rgba (cr, 0, 0, 0, 1);
367 cairo_show_text (cr, cache->id);
368 cairo_stroke (cr);
369
370 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
371 } else
372 y += gdk_pixbuf_get_height(icon);
373
374 /* return to the left border and below icon/text */
375 x = rect->x;
376
377 /* everything from here uses the same font */
378 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
379 CAIRO_FONT_WEIGHT_NORMAL);
380 #ifndef BIG_BALLOONS
381 cairo_set_font_size (cr, 14.0);
382 #else
383 cairo_set_font_size (cr, 22.0);
384 #endif
385
386 if(cache->name) {
387 /* draw cache name */
388 cairo_text_extents (cr, cache->name, &extents);
389 y += extents.height;
390 cairo_move_to (cr, x, y);
391 cairo_set_source_rgba (cr, 0, 0, 0, 1);
392 cairo_show_text (cr, cache->name);
393 cairo_stroke (cr);
394
395 /* return to the left border and below text */
396 y += LINE_SKIP;
397 x = rect->x;
398 }
399
400 if(cache->terrain) {
401 /* draw cache rating */
402 const char *terrain = "Terrain:";
403 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
404 cairo_text_extents (cr, _(terrain), &extents);
405 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
406
407 /* draw "Terrain:" string */
408 cairo_move_to (cr, x, y);
409 cairo_set_source_rgba (cr, 0, 0, 0, 1);
410 cairo_show_text (cr, _(terrain));
411 cairo_stroke (cr);
412 x += extents.width + 2;
413
414 /* draw terrain stars */
415 cairo_draw_pixbuf(cr, icon, x, y -
416 (gdk_pixbuf_get_height(icon) + extents.height)/2);
417
418 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
419 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
420 }
421
422 if(cache->difficulty) {
423 const char *difficulty = "Difficulty:";
424 cairo_text_extents (cr, _(difficulty), &extents);
425 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
426
427 /* draw "Difficulty:" string */
428 cairo_move_to (cr, x, y);
429 cairo_set_source_rgba (cr, 0, 0, 0, 1);
430 cairo_show_text (cr, _(difficulty));
431 cairo_stroke (cr);
432 x += extents.width + 2;
433
434 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
435 cairo_draw_pixbuf(cr, icon, x, y -
436 (gdk_pixbuf_get_height(icon) + extents.height)/2);
437 }
438 }
439
440 static gboolean
441 on_map_button_release_event(GtkWidget *widget,
442 GdkEventButton *event, map_context_t *context) {
443 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
444
445 if(context->press_on) {
446 coord_t coo;
447 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
448
449 pos_t pos =
450 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
451
452 cache_t *nearest = map_closest(context, &pos);
453 if(nearest && nearest == context->press_on) {
454 pos_t cpos = gpx_cache_pos(nearest);
455
456 float dist = gpx_pos_get_distance(pos, cpos, FALSE);
457 if(dist2pixel(context, dist, cpos.lat) < CLICK_FUZZ) {
458
459 osm_gps_map_osd_draw_balloon(map, cpos.lat, cpos.lon,
460 balloon_draw_cb, nearest);
461
462 osm_gps_map_osd_draw_nav (map, cpos.lat, cpos.lon, nearest->name);
463
464 }
465 }
466 context->press_on = NULL;
467 } else {
468 /* save new map position */
469 gfloat lat, lon;
470 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
471 context->appdata->map.pos.lat = lat;
472 context->appdata->map.pos.lon = lon;
473 }
474
475 return FALSE;
476 }
477
478 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
479 appdata_t *appdata = context->appdata;
480
481 printf("destroy map window\n");
482
483 /* save map parameters */
484 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
485 gint zoom;
486 g_object_get(map, "zoom", &zoom, NULL);
487 context->appdata->map.zoom = zoom;
488
489 gfloat lat, lon;
490 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
491 context->appdata->map.pos.lat = lat;
492 context->appdata->map.pos.lon = lon;
493
494 gint source;
495 g_object_get(map, "map-source", &source, NULL);
496 context->appdata->map.source = source;
497
498 #if MAEMO_VERSION_MAJOR == 5
499 /* restore cur_view */
500 context->appdata->cur_view = context->old_view;
501 #endif
502
503 gtk_timeout_remove(context->handler_id);
504
505 g_free(context);
506 appdata->map.context = NULL;
507 }
508
509 #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
510 /* get access to zoom buttons */
511 static void
512 on_window_realize(GtkWidget *widget, gpointer data) {
513 if (widget->window) {
514 unsigned char value = 1;
515 Atom hildon_zoom_key_atom =
516 gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
517 integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
518 Display *dpy =
519 GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
520 Window w = GDK_WINDOW_XID(widget->window);
521
522 XChangeProperty(dpy, w, hildon_zoom_key_atom,
523 integer_atom, 8, PropModeReplace, &value, 1);
524 }
525 }
526 #endif
527
528 void map(appdata_t *appdata) {
529 map_context_t *context = NULL;
530
531 /* if the map window already exists, just raise it */
532 if(appdata->map.context) {
533 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
534 return;
535 }
536
537 context = appdata->map.context = g_new0(map_context_t, 1);
538 context->appdata = appdata;
539 context->map_complete = FALSE;
540
541 /* cleanup old (pre 0.8.7) path if it exists */
542 char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
543 if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
544 printf("old file path %s exists\n", old_path);
545 rmdir_recursive(old_path);
546 }
547
548 /* It is recommanded that all applications share these same */
549 /* map path, so data is only cached once. The path should be: */
550 /* ~/.osm-gps-map on standard PC (users home) */
551 /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
552 /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
553 #if !defined(USE_MAEMO)
554 char *p = getenv("HOME");
555 if(!p) p = "/tmp";
556 char *path = g_strdup_printf("%s/.osm-gps-map", p);
557 #else
558 #if MAEMO_VERSION_MAJOR == 5
559 char *path = g_strdup("/home/user/.osm-gps-map");
560 #else
561 char *path = g_strdup("/media/mmc2/osm-gps-map");
562 #endif
563 #endif
564
565 const char *proxy = get_proxy_uri(appdata);
566
567 gint source = context->appdata->map.source;
568 if(!source) source = MAP_SOURCE;
569
570 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
571 "map-source", source,
572 "tile-cache", path,
573 "auto-center", FALSE,
574 "record-trip-history", FALSE,
575 "show-trip-history", FALSE,
576 proxy?"proxy-uri":NULL, proxy,
577 NULL);
578
579 g_free(path);
580
581 osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
582
583 char *name = NULL;
584 #ifdef USE_MAEMO
585 if(!appdata->cur_gpx && !appdata->cur_cache) {
586 #endif
587 /* draw all geocaches */
588 gpx_t *gpx = appdata->gpx;
589 while(gpx) {
590 map_draw_gpx(appdata, context->widget, gpx);
591 gpx = gpx->next;
592 }
593 name = g_strdup(_("all"));
594 #ifdef USE_MAEMO
595 } else if(!appdata->cur_cache) {
596 map_draw_gpx(appdata, context->widget, appdata->cur_gpx);
597 name = g_strdup(appdata->cur_gpx->name);
598 } else {
599 map_draw_cache(context->widget, appdata->cur_cache);
600 name = g_strdup(appdata->cur_cache->name);
601 }
602 #endif
603
604 char *title = g_strdup_printf(_("Map - %s"), name);
605 g_free(name);
606
607 #ifdef USE_MAEMO
608 #ifdef USE_STACKABLE_WINDOW
609 context->window = hildon_stackable_window_new();
610 /* try to enable the zoom buttons. don't do this on x86 as it breaks */
611 /* at runtime with cygwin x */
612 #ifndef __i386__
613 g_signal_connect(G_OBJECT(context->window), "realize",
614 G_CALLBACK(on_window_realize), NULL);
615 #endif // MAEMO_VERSION
616 #else
617 context->window = hildon_window_new();
618 #endif
619 #else
620 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
621 #endif
622
623 gtk_window_set_title(GTK_WINDOW(context->window), title);
624
625 #ifndef USE_MAEMO
626 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
627 #endif
628
629 g_free(title);
630
631 g_signal_connect(G_OBJECT(context->widget), "configure-event",
632 G_CALLBACK(on_map_configure), context);
633
634 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
635 G_CALLBACK(on_map_button_press_event), context);
636
637 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
638 G_CALLBACK(on_map_button_release_event), context);
639
640 /* install handler for timed updates of the gps button */
641 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
642
643 #if MAEMO_VERSION_MAJOR == 5
644 /* prevent some of the main screen things */
645 context->old_view = appdata->cur_view;
646 appdata->cur_view = NULL;
647 #endif
648
649 g_signal_connect(G_OBJECT(context->window), "destroy",
650 G_CALLBACK(on_window_destroy), context);
651
652 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
653 gtk_widget_show_all(GTK_WIDGET(context->window));
654 }