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

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Revision 77 - (show annotations)
Tue Aug 25 12:49:03 2009 UTC (14 years, 8 months ago) by harbaum
File MIME type: text/plain
File size: 16876 byte(s) 
osm-map path, gps etc. adjustements
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 GPS_DEFAULT_ZOOM 13
36
37 #define PROXY_KEY "/system/http_proxy/"
38
39 static const char *get_proxy_uri(appdata_t *appdata) {
40 static char proxy_buffer[64] = "";
41
42 /* use environment settings if preset */
43 const char *proxy = g_getenv("http_proxy");
44 if(proxy) {
45 printf("http_proxy: %s\n", proxy);
46 return proxy;
47 }
48
49 /* ------------- get proxy settings -------------------- */
50 if(gconf_client_get_bool(appdata->gconf_client,
51 PROXY_KEY "use_http_proxy", NULL)) {
52
53 /* we can savely ignore things like "ignore_hosts" since we */
54 /* are pretty sure not inside the net of one of our map renderers */
55 /* (unless the user works at google :-) */
56
57 /* get basic settings */
58 char *host =
59 gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
60 if(host) {
61 int port =
62 gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
63
64 snprintf(proxy_buffer, sizeof(proxy_buffer),
65 "http://%s:%u", host, port);
66
67 g_free(host);
68 }
69 return proxy_buffer;
70 }
71
72 return NULL;
73 }
74
75 static void
76 cb_map_gps(osd_button_t but, map_context_t *context) {
77 if(but == OSD_GPS) {
78 pos_t *refpos = get_pos(context->appdata);
79 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
80 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
81 refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
82 /* re-enable centering */
83 g_object_set(context->widget, "auto-center", TRUE, NULL);
84 } else {
85 /* no coordinates given: display the entire world */
86 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
87 0.0, 0.0, 1);
88 }
89 }
90 }
91
92 static int dist2pixel(map_context_t *context, float km, float lat) {
93 return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
94 }
95
96 static gboolean map_gps_update(gpointer data) {
97 map_context_t *context = (map_context_t*)data;
98
99 /* get reference position ... */
100 pos_t *refpos = get_pos(context->appdata);
101 gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
102
103 /* ... and enable "goto" button if it's valid */
104 osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
105 OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);
106
107 if(ok) {
108 float heading = NAN;
109 int radius = 0;
110
111 if(context->appdata->use_gps) {
112 heading = gps_get_heading(context->appdata);
113
114 /* get error */
115 float eph = gps_get_eph(context->appdata);
116 if(!isnan(eph))
117 radius = dist2pixel(context, eph/1000, refpos->lat);
118 }
119
120 g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
121 osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
122 refpos->lat, refpos->lon, heading);
123 } else
124 osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
125
126 return TRUE;
127 }
128
129 static gboolean on_map_configure(GtkWidget *widget,
130 GdkEventConfigure *event,
131 map_context_t *context) {
132
133 /* set default values if they are invalid */
134 if(!context->appdata->map.zoom ||
135 isnan(context->appdata->map.pos.lat) ||
136 isnan(context->appdata->map.pos.lon)) {
137 printf("no valid map position found\n");
138
139 pos_t *refpos = get_pos(context->appdata);
140 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
141 /* use gps position if present */
142 context->appdata->map.pos = *refpos;
143 context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
144 } else {
145 /* use world map otherwise */
146 context->appdata->map.pos.lat = 0.0;
147 context->appdata->map.pos.lon = 0.0;
148 context->appdata->map.zoom = 1;
149 }
150 }
151
152 /* jump to initial position */
153 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
154 context->appdata->map.pos.lat,
155 context->appdata->map.pos.lon,
156 context->appdata->map.zoom);
157
158 return FALSE;
159 }
160
161 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
162 while(cache) {
163 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
164
165 osm_gps_map_add_image(OSM_GPS_MAP(map),
166 cache->pos.lat, cache->pos.lon, icon);
167
168 cache = cache->next;
169 }
170 }
171
172 static void
173 map_cachelist_nearest(cache_t *cache, pos_t *pos,
174 cache_t **result, float *distance) {
175 while(cache) {
176 float dist =
177 pow(cache->pos.lat - pos->lat, 2) +
178 pow(cache->pos.lon - pos->lon, 2);
179
180 if(!(dist > *distance)) {
181 *result = cache;
182 *distance = dist;
183 }
184
185 cache = cache->next;
186 }
187 }
188
189 static cache_t *map_closest(map_context_t *context, pos_t *pos) {
190 cache_t *result = NULL;
191 float distance = NAN;
192
193 #ifdef USE_MAEMO
194 if(!context->appdata->cur_gpx) {
195 #endif
196 /* search all geocaches */
197 gpx_t *gpx = context->appdata->gpx;
198 while(gpx) {
199 map_cachelist_nearest(gpx->cache, pos, &result, &distance);
200 gpx = gpx->next;
201 }
202 #ifdef USE_MAEMO
203 } else {
204 map_cachelist_nearest(context->appdata->cur_gpx->cache,
205 pos, &result, &distance);
206 }
207 #endif
208
209 return result;
210 }
211
212 /* translate between osm-gps-map positions and gpxview ones */
213 pos_t coord2pos(coord_t coo) {
214 pos_t pos;
215 pos.lat = rad2deg(coo.rlat);
216 pos.lon = rad2deg(coo.rlon);
217 return pos;
218 }
219
220 #define CLICK_FUZZ (24)
221
222 static gboolean
223 on_map_button_press_event(GtkWidget *widget,
224 GdkEventButton *event, map_context_t *context) {
225 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
226
227 /* got a press event without release event? eat it! */
228 if(context->press_on != NULL) {
229 printf("PRESS: already\n");
230 return TRUE;
231 }
232
233 pos_t pos =
234 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
235
236 cache_t *nearest = map_closest(context, &pos);
237 if(nearest) {
238 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
239 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
240 context->press_on = nearest;
241 }
242
243 return FALSE;
244 }
245
246 static void
247 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
248 /* convert the pixbuf into something cairo can handle */
249
250 // Create a new ImageSurface
251 cairo_surface_t *image_surface =
252 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
253 gdk_pixbuf_get_width(buf),
254 gdk_pixbuf_get_height(buf));
255
256 // Create the new Context for the ImageSurface
257 cairo_t *context = cairo_create(image_surface);
258
259 // Draw the image on the new Context
260 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
261 cairo_paint(context);
262
263 // now draw this onto the original context
264 cairo_set_source_surface(cr, image_surface, x, y);
265
266 cairo_paint(cr);
267 }
268
269 #ifndef BIG_BALLOONS
270 #define LINE_SKIP 7
271 #else
272 #define LINE_SKIP 12
273 #endif
274
275 static void
276 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
277 cache_t *cache = (cache_t*)data;
278
279 #if 0
280 /* draw pink background to check clipping */
281 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
282 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
283 cairo_fill_preserve (cr);
284 cairo_set_line_width (cr, 0);
285 cairo_stroke (cr);
286 #endif
287
288 /* leave a little border top and left */
289 gint x = rect->x, y = rect->y;
290
291 /* draw the cache type icon ... */
292 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
293 cairo_draw_pixbuf(cr, icon, x, y);
294
295 /* ... and right of it the waypoint id */
296 cairo_text_extents_t extents;
297
298 if(cache->id) {
299 cairo_select_font_face (cr, "Sans",
300 CAIRO_FONT_SLANT_NORMAL,
301 CAIRO_FONT_WEIGHT_BOLD);
302
303 #ifndef BIG_BALLOONS
304 cairo_set_font_size (cr, 20.0);
305 #else
306 cairo_set_font_size (cr, 36.0);
307 #endif
308
309 cairo_text_extents (cr, cache->id, &extents);
310
311 /* display id right of icon vertically centered */
312 x += gdk_pixbuf_get_width(icon) + 5;
313 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
314 cairo_move_to (cr, x, y);
315 cairo_set_source_rgba (cr, 0, 0, 0, 1);
316 cairo_show_text (cr, cache->id);
317 cairo_stroke (cr);
318
319 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
320 } else
321 y += gdk_pixbuf_get_height(icon);
322
323 /* return to the left border and below icon/text */
324 x = rect->x;
325
326 /* everything from here uses the same font */
327 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
328 CAIRO_FONT_WEIGHT_NORMAL);
329 #ifndef BIG_BALLOONS
330 cairo_set_font_size (cr, 14.0);
331 #else
332 cairo_set_font_size (cr, 22.0);
333 #endif
334
335 if(cache->name) {
336 /* draw cache name */
337 cairo_text_extents (cr, cache->name, &extents);
338 y += extents.height;
339 cairo_move_to (cr, x, y);
340 cairo_set_source_rgba (cr, 0, 0, 0, 1);
341 cairo_show_text (cr, cache->name);
342 cairo_stroke (cr);
343
344 /* return to the left border and below text */
345 y += LINE_SKIP;
346 x = rect->x;
347 }
348
349 if(cache->terrain) {
350 /* draw cache rating */
351 const char *terrain = "Terrain:";
352 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
353 cairo_text_extents (cr, _(terrain), &extents);
354 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
355
356 /* draw "Terrain:" string */
357 cairo_move_to (cr, x, y);
358 cairo_set_source_rgba (cr, 0, 0, 0, 1);
359 cairo_show_text (cr, _(terrain));
360 cairo_stroke (cr);
361 x += extents.width + 2;
362
363 /* draw terrain stars */
364 cairo_draw_pixbuf(cr, icon, x, y -
365 (gdk_pixbuf_get_height(icon) + extents.height)/2);
366
367 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
368 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
369 }
370
371 if(cache->difficulty) {
372 const char *difficulty = "Difficulty:";
373 cairo_text_extents (cr, _(difficulty), &extents);
374 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
375
376 /* draw "Difficulty:" string */
377 cairo_move_to (cr, x, y);
378 cairo_set_source_rgba (cr, 0, 0, 0, 1);
379 cairo_show_text (cr, _(difficulty));
380 cairo_stroke (cr);
381 x += extents.width + 2;
382
383 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
384 cairo_draw_pixbuf(cr, icon, x, y -
385 (gdk_pixbuf_get_height(icon) + extents.height)/2);
386 }
387 }
388
389 static gboolean
390 on_map_button_release_event(GtkWidget *widget,
391 GdkEventButton *event, map_context_t *context) {
392 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
393
394 if(context->press_on) {
395 coord_t coo;
396 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
397
398 pos_t pos =
399 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
400
401 cache_t *nearest = map_closest(context, &pos);
402 if(nearest && nearest == context->press_on) {
403 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
404 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
405
406 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
407 balloon_draw_cb, nearest);
408 }
409 }
410 context->press_on = NULL;
411 } else {
412 /* save new map position */
413 gfloat lat, lon;
414 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
415 context->appdata->map.pos.lat = lat;
416 context->appdata->map.pos.lon = lon;
417 }
418
419 return FALSE;
420 }
421
422 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
423 appdata_t *appdata = context->appdata;
424
425 printf("destroy map window\n");
426
427 /* save map parameters */
428 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
429 gint zoom;
430 g_object_get(map, "zoom", &zoom, NULL);
431 context->appdata->map.zoom = zoom;
432
433 gfloat lat, lon;
434 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
435 context->appdata->map.pos.lat = lat;
436 context->appdata->map.pos.lon = lon;
437
438 #if MAEMO_VERSION_MAJOR == 5
439 /* restore cur_view */
440 context->appdata->cur_view = context->old_view;
441 #endif
442
443 gtk_timeout_remove(context->handler_id);
444
445 g_free(context);
446 appdata->map.context = NULL;
447 }
448
449 #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
450 /* get access to zoom buttons */
451 static void
452 on_window_realize(GtkWidget *widget, gpointer data) {
453 if (widget->window) {
454 unsigned char value = 1;
455 Atom hildon_zoom_key_atom =
456 gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
457 integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
458 Display *dpy =
459 GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
460 Window w = GDK_WINDOW_XID(widget->window);
461
462 XChangeProperty(dpy, w, hildon_zoom_key_atom,
463 integer_atom, 8, PropModeReplace, &value, 1);
464 }
465 }
466 #endif
467
468 void map(appdata_t *appdata) {
469 map_context_t *context = NULL;
470
471 /* if the map window already exists, just raise it */
472 if(appdata->map.context) {
473 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
474 return;
475 }
476
477 context = appdata->map.context = g_new0(map_context_t, 1);
478 context->appdata = appdata;
479
480 /* cleanup old (pre 0.8.7) path if it exists */
481 char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
482 if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
483 printf("old file path %s exists\n", old_path);
484 rmdir_recursive(old_path);
485 }
486
487 /* It is recommanded that all applications share these same */
488 /* map path, so data is only cached once. The path should be: */
489 /* ~/.osm-gps-map on standard PC (users home) */
490 /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
491 /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
492 #if !defined(USE_MAEMO)
493 char *p = getenv("HOME");
494 if(!p) p = "/tmp";
495 char *path = g_strdup_printf("%s/.osm-gps-map", p);
496 #else
497 #if MAEMO_VERSION_MAJOR == 5
498 char *path = g_strdup("/home/user/.osm-gps-map");
499 #else
500 char *path = g_strdup("/media/mmc2/osm-gps-map");
501 #endif
502 #endif
503
504 const char *proxy = get_proxy_uri(appdata);
505
506 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
507 "map-source", MAP_SOURCE,
508 "tile-cache", path,
509 "auto-center", FALSE,
510 "record-trip-history", FALSE,
511 "show-trip-history", FALSE,
512 proxy?"proxy-uri":NULL, proxy,
513 NULL);
514
515 g_free(path);
516
517 osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
518
519 char *name = NULL;
520 #ifdef USE_MAEMO
521 if(!appdata->cur_gpx) {
522 #endif
523 /* draw all geocaches */
524 gpx_t *gpx = appdata->gpx;
525 while(gpx) {
526 map_draw_cachelist(context->widget, gpx->cache);
527 gpx = gpx->next;
528 }
529 name = g_strdup(_("all geocaches"));
530 #ifdef USE_MAEMO
531 } else {
532 map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
533 name = g_strdup(appdata->cur_gpx->name);
534 }
535 #endif
536
537 char *title = g_strdup_printf(_("Map - %s"), name);
538 g_free(name);
539
540 #ifdef USE_MAEMO
541 #ifdef USE_STACKABLE_WINDOW
542 context->window = hildon_stackable_window_new();
543 /* try to enable the zoom buttons. don't do this on x86 as it breaks */
544 /* at runtime with cygwin x */
545 #ifndef __i386__
546 g_signal_connect(G_OBJECT(context->window), "realize",
547 G_CALLBACK(on_window_realize), NULL);
548 #endif // MAEMO_VERSION
549 #else
550 context->window = hildon_window_new();
551 #endif
552 #else
553 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
554 #endif
555
556 gtk_window_set_title(GTK_WINDOW(context->window), title);
557
558 #ifndef USE_MAEMO
559 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
560 #endif
561
562 g_free(title);
563
564 g_signal_connect(G_OBJECT(context->widget), "configure-event",
565 G_CALLBACK(on_map_configure), context);
566
567 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
568 G_CALLBACK(on_map_button_press_event), context);
569
570 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
571 G_CALLBACK(on_map_button_release_event), context);
572
573 /* install handler for timed updates of the gps button */
574 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
575
576 #if MAEMO_VERSION_MAJOR == 5
577 /* prevent some of the main screen things */
578 context->old_view = appdata->cur_view;
579 appdata->cur_view = NULL;
580 #endif
581
582 g_signal_connect(G_OBJECT(context->window), "destroy",
583 G_CALLBACK(on_window_destroy), context);
584
585 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
586 gtk_widget_show_all(GTK_WIDGET(context->window));
587 }