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

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Revision 81 - (show annotations)
Tue Aug 25 13:21:45 2009 UTC (14 years, 8 months ago) by harbaum
File MIME type: text/plain
File size: 17084 byte(s) 
Limit gps auto zoom
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 gint zoom;
81 g_object_get(OSM_GPS_MAP(context->widget), "zoom", &zoom, NULL);
82 if(zoom < 10)
83 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
84 refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
85 else
86 osm_gps_map_set_center(OSM_GPS_MAP(context->widget),
87 refpos->lat, refpos->lon);
88
89 /* re-enable centering */
90 g_object_set(context->widget, "auto-center", TRUE, NULL);
91 } else {
92 /* no coordinates given: display the entire world */
93 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
94 0.0, 0.0, 1);
95 }
96 }
97 }
98
99 static int dist2pixel(map_context_t *context, float km, float lat) {
100 return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
101 }
102
103 static gboolean map_gps_update(gpointer data) {
104 map_context_t *context = (map_context_t*)data;
105
106 /* get reference position ... */
107 pos_t *refpos = get_pos(context->appdata);
108 gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
109
110 /* ... and enable "goto" button if it's valid */
111 osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
112 OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);
113
114 if(ok) {
115 float heading = NAN;
116 int radius = 0;
117
118 if(context->appdata->use_gps) {
119 heading = gps_get_heading(context->appdata);
120
121 /* get error */
122 float eph = gps_get_eph(context->appdata);
123 if(!isnan(eph))
124 radius = dist2pixel(context, eph/1000, refpos->lat);
125 }
126
127 g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
128 osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
129 refpos->lat, refpos->lon, heading);
130 } else
131 osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
132
133 return TRUE;
134 }
135
136 static gboolean on_map_configure(GtkWidget *widget,
137 GdkEventConfigure *event,
138 map_context_t *context) {
139
140 /* set default values if they are invalid */
141 if(!context->appdata->map.zoom ||
142 isnan(context->appdata->map.pos.lat) ||
143 isnan(context->appdata->map.pos.lon)) {
144 printf("no valid map position found\n");
145
146 pos_t *refpos = get_pos(context->appdata);
147 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
148 /* use gps position if present */
149 context->appdata->map.pos = *refpos;
150 context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
151 } else {
152 /* use world map otherwise */
153 context->appdata->map.pos.lat = 0.0;
154 context->appdata->map.pos.lon = 0.0;
155 context->appdata->map.zoom = 1;
156 }
157 }
158
159 /* jump to initial position */
160 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
161 context->appdata->map.pos.lat,
162 context->appdata->map.pos.lon,
163 context->appdata->map.zoom);
164
165 return FALSE;
166 }
167
168 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
169 while(cache) {
170 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
171
172 osm_gps_map_add_image(OSM_GPS_MAP(map),
173 cache->pos.lat, cache->pos.lon, icon);
174
175 cache = cache->next;
176 }
177 }
178
179 static void
180 map_cachelist_nearest(cache_t *cache, pos_t *pos,
181 cache_t **result, float *distance) {
182 while(cache) {
183 float dist =
184 pow(cache->pos.lat - pos->lat, 2) +
185 pow(cache->pos.lon - pos->lon, 2);
186
187 if(!(dist > *distance)) {
188 *result = cache;
189 *distance = dist;
190 }
191
192 cache = cache->next;
193 }
194 }
195
196 static cache_t *map_closest(map_context_t *context, pos_t *pos) {
197 cache_t *result = NULL;
198 float distance = NAN;
199
200 #ifdef USE_MAEMO
201 if(!context->appdata->cur_gpx) {
202 #endif
203 /* search all geocaches */
204 gpx_t *gpx = context->appdata->gpx;
205 while(gpx) {
206 map_cachelist_nearest(gpx->cache, pos, &result, &distance);
207 gpx = gpx->next;
208 }
209 #ifdef USE_MAEMO
210 } else {
211 map_cachelist_nearest(context->appdata->cur_gpx->cache,
212 pos, &result, &distance);
213 }
214 #endif
215
216 return result;
217 }
218
219 /* translate between osm-gps-map positions and gpxview ones */
220 pos_t coord2pos(coord_t coo) {
221 pos_t pos;
222 pos.lat = rad2deg(coo.rlat);
223 pos.lon = rad2deg(coo.rlon);
224 return pos;
225 }
226
227 #define CLICK_FUZZ (24)
228
229 static gboolean
230 on_map_button_press_event(GtkWidget *widget,
231 GdkEventButton *event, map_context_t *context) {
232 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
233
234 /* got a press event without release event? eat it! */
235 if(context->press_on != NULL) {
236 printf("PRESS: already\n");
237 return TRUE;
238 }
239
240 pos_t pos =
241 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
242
243 cache_t *nearest = map_closest(context, &pos);
244 if(nearest) {
245 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
246 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
247 context->press_on = nearest;
248 }
249
250 return FALSE;
251 }
252
253 static void
254 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
255 /* convert the pixbuf into something cairo can handle */
256
257 // Create a new ImageSurface
258 cairo_surface_t *image_surface =
259 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
260 gdk_pixbuf_get_width(buf),
261 gdk_pixbuf_get_height(buf));
262
263 // Create the new Context for the ImageSurface
264 cairo_t *context = cairo_create(image_surface);
265
266 // Draw the image on the new Context
267 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
268 cairo_paint(context);
269
270 // now draw this onto the original context
271 cairo_set_source_surface(cr, image_surface, x, y);
272
273 cairo_paint(cr);
274 }
275
276 #ifndef BIG_BALLOONS
277 #define LINE_SKIP 7
278 #else
279 #define LINE_SKIP 12
280 #endif
281
282 static void
283 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
284 cache_t *cache = (cache_t*)data;
285
286 #if 0
287 /* draw pink background to check clipping */
288 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
289 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
290 cairo_fill_preserve (cr);
291 cairo_set_line_width (cr, 0);
292 cairo_stroke (cr);
293 #endif
294
295 /* leave a little border top and left */
296 gint x = rect->x, y = rect->y;
297
298 /* draw the cache type icon ... */
299 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
300 cairo_draw_pixbuf(cr, icon, x, y);
301
302 /* ... and right of it the waypoint id */
303 cairo_text_extents_t extents;
304
305 if(cache->id) {
306 cairo_select_font_face (cr, "Sans",
307 CAIRO_FONT_SLANT_NORMAL,
308 CAIRO_FONT_WEIGHT_BOLD);
309
310 #ifndef BIG_BALLOONS
311 cairo_set_font_size (cr, 20.0);
312 #else
313 cairo_set_font_size (cr, 36.0);
314 #endif
315
316 cairo_text_extents (cr, cache->id, &extents);
317
318 /* display id right of icon vertically centered */
319 x += gdk_pixbuf_get_width(icon) + 5;
320 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
321 cairo_move_to (cr, x, y);
322 cairo_set_source_rgba (cr, 0, 0, 0, 1);
323 cairo_show_text (cr, cache->id);
324 cairo_stroke (cr);
325
326 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
327 } else
328 y += gdk_pixbuf_get_height(icon);
329
330 /* return to the left border and below icon/text */
331 x = rect->x;
332
333 /* everything from here uses the same font */
334 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
335 CAIRO_FONT_WEIGHT_NORMAL);
336 #ifndef BIG_BALLOONS
337 cairo_set_font_size (cr, 14.0);
338 #else
339 cairo_set_font_size (cr, 22.0);
340 #endif
341
342 if(cache->name) {
343 /* draw cache name */
344 cairo_text_extents (cr, cache->name, &extents);
345 y += extents.height;
346 cairo_move_to (cr, x, y);
347 cairo_set_source_rgba (cr, 0, 0, 0, 1);
348 cairo_show_text (cr, cache->name);
349 cairo_stroke (cr);
350
351 /* return to the left border and below text */
352 y += LINE_SKIP;
353 x = rect->x;
354 }
355
356 if(cache->terrain) {
357 /* draw cache rating */
358 const char *terrain = "Terrain:";
359 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
360 cairo_text_extents (cr, _(terrain), &extents);
361 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
362
363 /* draw "Terrain:" string */
364 cairo_move_to (cr, x, y);
365 cairo_set_source_rgba (cr, 0, 0, 0, 1);
366 cairo_show_text (cr, _(terrain));
367 cairo_stroke (cr);
368 x += extents.width + 2;
369
370 /* draw terrain stars */
371 cairo_draw_pixbuf(cr, icon, x, y -
372 (gdk_pixbuf_get_height(icon) + extents.height)/2);
373
374 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
375 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
376 }
377
378 if(cache->difficulty) {
379 const char *difficulty = "Difficulty:";
380 cairo_text_extents (cr, _(difficulty), &extents);
381 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
382
383 /* draw "Difficulty:" string */
384 cairo_move_to (cr, x, y);
385 cairo_set_source_rgba (cr, 0, 0, 0, 1);
386 cairo_show_text (cr, _(difficulty));
387 cairo_stroke (cr);
388 x += extents.width + 2;
389
390 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
391 cairo_draw_pixbuf(cr, icon, x, y -
392 (gdk_pixbuf_get_height(icon) + extents.height)/2);
393 }
394 }
395
396 static gboolean
397 on_map_button_release_event(GtkWidget *widget,
398 GdkEventButton *event, map_context_t *context) {
399 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
400
401 if(context->press_on) {
402 coord_t coo;
403 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
404
405 pos_t pos =
406 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
407
408 cache_t *nearest = map_closest(context, &pos);
409 if(nearest && nearest == context->press_on) {
410 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
411 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
412
413 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
414 balloon_draw_cb, nearest);
415 }
416 }
417 context->press_on = NULL;
418 } else {
419 /* save new map position */
420 gfloat lat, lon;
421 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
422 context->appdata->map.pos.lat = lat;
423 context->appdata->map.pos.lon = lon;
424 }
425
426 return FALSE;
427 }
428
429 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
430 appdata_t *appdata = context->appdata;
431
432 printf("destroy map window\n");
433
434 /* save map parameters */
435 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
436 gint zoom;
437 g_object_get(map, "zoom", &zoom, NULL);
438 context->appdata->map.zoom = zoom;
439
440 gfloat lat, lon;
441 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
442 context->appdata->map.pos.lat = lat;
443 context->appdata->map.pos.lon = lon;
444
445 #if MAEMO_VERSION_MAJOR == 5
446 /* restore cur_view */
447 context->appdata->cur_view = context->old_view;
448 #endif
449
450 gtk_timeout_remove(context->handler_id);
451
452 g_free(context);
453 appdata->map.context = NULL;
454 }
455
456 #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
457 /* get access to zoom buttons */
458 static void
459 on_window_realize(GtkWidget *widget, gpointer data) {
460 if (widget->window) {
461 unsigned char value = 1;
462 Atom hildon_zoom_key_atom =
463 gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
464 integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
465 Display *dpy =
466 GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
467 Window w = GDK_WINDOW_XID(widget->window);
468
469 XChangeProperty(dpy, w, hildon_zoom_key_atom,
470 integer_atom, 8, PropModeReplace, &value, 1);
471 }
472 }
473 #endif
474
475 void map(appdata_t *appdata) {
476 map_context_t *context = NULL;
477
478 /* if the map window already exists, just raise it */
479 if(appdata->map.context) {
480 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
481 return;
482 }
483
484 context = appdata->map.context = g_new0(map_context_t, 1);
485 context->appdata = appdata;
486
487 /* cleanup old (pre 0.8.7) path if it exists */
488 char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
489 if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
490 printf("old file path %s exists\n", old_path);
491 rmdir_recursive(old_path);
492 }
493
494 /* It is recommanded that all applications share these same */
495 /* map path, so data is only cached once. The path should be: */
496 /* ~/.osm-gps-map on standard PC (users home) */
497 /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
498 /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
499 #if !defined(USE_MAEMO)
500 char *p = getenv("HOME");
501 if(!p) p = "/tmp";
502 char *path = g_strdup_printf("%s/.osm-gps-map", p);
503 #else
504 #if MAEMO_VERSION_MAJOR == 5
505 char *path = g_strdup("/home/user/.osm-gps-map");
506 #else
507 char *path = g_strdup("/media/mmc2/osm-gps-map");
508 #endif
509 #endif
510
511 const char *proxy = get_proxy_uri(appdata);
512
513 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
514 "map-source", MAP_SOURCE,
515 "tile-cache", path,
516 "auto-center", FALSE,
517 "record-trip-history", FALSE,
518 "show-trip-history", FALSE,
519 proxy?"proxy-uri":NULL, proxy,
520 NULL);
521
522 g_free(path);
523
524 osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
525
526 char *name = NULL;
527 #ifdef USE_MAEMO
528 if(!appdata->cur_gpx) {
529 #endif
530 /* draw all geocaches */
531 gpx_t *gpx = appdata->gpx;
532 while(gpx) {
533 map_draw_cachelist(context->widget, gpx->cache);
534 gpx = gpx->next;
535 }
536 name = g_strdup(_("all geocaches"));
537 #ifdef USE_MAEMO
538 } else {
539 map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
540 name = g_strdup(appdata->cur_gpx->name);
541 }
542 #endif
543
544 char *title = g_strdup_printf(_("Map - %s"), name);
545 g_free(name);
546
547 #ifdef USE_MAEMO
548 #ifdef USE_STACKABLE_WINDOW
549 context->window = hildon_stackable_window_new();
550 /* try to enable the zoom buttons. don't do this on x86 as it breaks */
551 /* at runtime with cygwin x */
552 #ifndef __i386__
553 g_signal_connect(G_OBJECT(context->window), "realize",
554 G_CALLBACK(on_window_realize), NULL);
555 #endif // MAEMO_VERSION
556 #else
557 context->window = hildon_window_new();
558 #endif
559 #else
560 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
561 #endif
562
563 gtk_window_set_title(GTK_WINDOW(context->window), title);
564
565 #ifndef USE_MAEMO
566 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
567 #endif
568
569 g_free(title);
570
571 g_signal_connect(G_OBJECT(context->widget), "configure-event",
572 G_CALLBACK(on_map_configure), context);
573
574 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
575 G_CALLBACK(on_map_button_press_event), context);
576
577 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
578 G_CALLBACK(on_map_button_release_event), context);
579
580 /* install handler for timed updates of the gps button */
581 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
582
583 #if MAEMO_VERSION_MAJOR == 5
584 /* prevent some of the main screen things */
585 context->old_view = appdata->cur_view;
586 appdata->cur_view = NULL;
587 #endif
588
589 g_signal_connect(G_OBJECT(context->window), "destroy",
590 G_CALLBACK(on_window_destroy), context);
591
592 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
593 gtk_widget_show_all(GTK_WIDGET(context->window));
594 }