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

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Revision 86 - (show annotations)
Sun Aug 30 19:05:44 2009 UTC (14 years, 8 months ago) by harbaum
File MIME type: text/plain
File size: 17382 byte(s) 
OSD animation
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 if(!context->map_complete) {
142
143 /* set default values if they are invalid */
144 if(!context->appdata->map.zoom ||
145 isnan(context->appdata->map.pos.lat) ||
146 isnan(context->appdata->map.pos.lon)) {
147 printf("no valid map position found\n");
148
149 pos_t *refpos = get_pos(context->appdata);
150 if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
151 /* use gps position if present */
152 context->appdata->map.pos = *refpos;
153 context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
154 } else {
155 /* use world map otherwise */
156 context->appdata->map.pos.lat = 0.0;
157 context->appdata->map.pos.lon = 0.0;
158 context->appdata->map.zoom = 1;
159 }
160 }
161
162 /* jump to initial position */
163 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
164 context->appdata->map.pos.lat,
165 context->appdata->map.pos.lon,
166 context->appdata->map.zoom);
167 context->map_complete = TRUE;
168 }
169
170 return FALSE;
171 }
172
173 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
174 while(cache) {
175 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
176
177 osm_gps_map_add_image(OSM_GPS_MAP(map),
178 cache->pos.lat, cache->pos.lon, icon);
179
180 cache = cache->next;
181 }
182 }
183
184 static void
185 map_cachelist_nearest(cache_t *cache, pos_t *pos,
186 cache_t **result, float *distance) {
187 while(cache) {
188 float dist =
189 pow(cache->pos.lat - pos->lat, 2) +
190 pow(cache->pos.lon - pos->lon, 2);
191
192 if(!(dist > *distance)) {
193 *result = cache;
194 *distance = dist;
195 }
196
197 cache = cache->next;
198 }
199 }
200
201 static cache_t *map_closest(map_context_t *context, pos_t *pos) {
202 cache_t *result = NULL;
203 float distance = NAN;
204
205 #ifdef USE_MAEMO
206 if(!context->appdata->cur_gpx) {
207 #endif
208 /* search all geocaches */
209 gpx_t *gpx = context->appdata->gpx;
210 while(gpx) {
211 map_cachelist_nearest(gpx->cache, pos, &result, &distance);
212 gpx = gpx->next;
213 }
214 #ifdef USE_MAEMO
215 } else {
216 map_cachelist_nearest(context->appdata->cur_gpx->cache,
217 pos, &result, &distance);
218 }
219 #endif
220
221 return result;
222 }
223
224 /* translate between osm-gps-map positions and gpxview ones */
225 pos_t coord2pos(coord_t coo) {
226 pos_t pos;
227 pos.lat = rad2deg(coo.rlat);
228 pos.lon = rad2deg(coo.rlon);
229 return pos;
230 }
231
232 #define CLICK_FUZZ (24)
233
234 static gboolean
235 on_map_button_press_event(GtkWidget *widget,
236 GdkEventButton *event, map_context_t *context) {
237 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
238
239 /* check if we actually clicked parts of the OSD */
240 if(osm_gps_map_osd_check(map, event->x, event->y) != OSD_NONE)
241 return FALSE;
242
243 /* got a press event without release event? eat it! */
244 if(context->press_on != NULL) {
245 printf("PRESS: already\n");
246 return FALSE;
247 }
248
249 pos_t pos =
250 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
251
252 cache_t *nearest = map_closest(context, &pos);
253 if(nearest) {
254 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
255 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
256 context->press_on = nearest;
257 }
258
259 return FALSE;
260 }
261
262 static void
263 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
264 /* convert the pixbuf into something cairo can handle */
265
266 // Create a new ImageSurface
267 cairo_surface_t *image_surface =
268 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
269 gdk_pixbuf_get_width(buf),
270 gdk_pixbuf_get_height(buf));
271
272 // Create the new Context for the ImageSurface
273 cairo_t *context = cairo_create(image_surface);
274
275 // Draw the image on the new Context
276 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
277 cairo_paint(context);
278
279 // now draw this onto the original context
280 cairo_set_source_surface(cr, image_surface, x, y);
281
282 cairo_paint(cr);
283 }
284
285 #ifndef BIG_BALLOONS
286 #define LINE_SKIP 7
287 #else
288 #define LINE_SKIP 12
289 #endif
290
291 static void
292 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
293 cache_t *cache = (cache_t*)data;
294
295 #if 0
296 /* draw pink background to check clipping */
297 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
298 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
299 cairo_fill_preserve (cr);
300 cairo_set_line_width (cr, 0);
301 cairo_stroke (cr);
302 #endif
303
304 /* leave a little border top and left */
305 gint x = rect->x, y = rect->y;
306
307 /* draw the cache type icon ... */
308 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
309 cairo_draw_pixbuf(cr, icon, x, y);
310
311 /* ... and right of it the waypoint id */
312 cairo_text_extents_t extents;
313
314 if(cache->id) {
315 cairo_select_font_face (cr, "Sans",
316 CAIRO_FONT_SLANT_NORMAL,
317 CAIRO_FONT_WEIGHT_BOLD);
318
319 #ifndef BIG_BALLOONS
320 cairo_set_font_size (cr, 20.0);
321 #else
322 cairo_set_font_size (cr, 36.0);
323 #endif
324
325 cairo_text_extents (cr, cache->id, &extents);
326
327 /* display id right of icon vertically centered */
328 x += gdk_pixbuf_get_width(icon) + 5;
329 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
330 cairo_move_to (cr, x, y);
331 cairo_set_source_rgba (cr, 0, 0, 0, 1);
332 cairo_show_text (cr, cache->id);
333 cairo_stroke (cr);
334
335 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
336 } else
337 y += gdk_pixbuf_get_height(icon);
338
339 /* return to the left border and below icon/text */
340 x = rect->x;
341
342 /* everything from here uses the same font */
343 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
344 CAIRO_FONT_WEIGHT_NORMAL);
345 #ifndef BIG_BALLOONS
346 cairo_set_font_size (cr, 14.0);
347 #else
348 cairo_set_font_size (cr, 22.0);
349 #endif
350
351 if(cache->name) {
352 /* draw cache name */
353 cairo_text_extents (cr, cache->name, &extents);
354 y += extents.height;
355 cairo_move_to (cr, x, y);
356 cairo_set_source_rgba (cr, 0, 0, 0, 1);
357 cairo_show_text (cr, cache->name);
358 cairo_stroke (cr);
359
360 /* return to the left border and below text */
361 y += LINE_SKIP;
362 x = rect->x;
363 }
364
365 if(cache->terrain) {
366 /* draw cache rating */
367 const char *terrain = "Terrain:";
368 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
369 cairo_text_extents (cr, _(terrain), &extents);
370 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
371
372 /* draw "Terrain:" string */
373 cairo_move_to (cr, x, y);
374 cairo_set_source_rgba (cr, 0, 0, 0, 1);
375 cairo_show_text (cr, _(terrain));
376 cairo_stroke (cr);
377 x += extents.width + 2;
378
379 /* draw terrain stars */
380 cairo_draw_pixbuf(cr, icon, x, y -
381 (gdk_pixbuf_get_height(icon) + extents.height)/2);
382
383 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
384 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
385 }
386
387 if(cache->difficulty) {
388 const char *difficulty = "Difficulty:";
389 cairo_text_extents (cr, _(difficulty), &extents);
390 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
391
392 /* draw "Difficulty:" string */
393 cairo_move_to (cr, x, y);
394 cairo_set_source_rgba (cr, 0, 0, 0, 1);
395 cairo_show_text (cr, _(difficulty));
396 cairo_stroke (cr);
397 x += extents.width + 2;
398
399 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
400 cairo_draw_pixbuf(cr, icon, x, y -
401 (gdk_pixbuf_get_height(icon) + extents.height)/2);
402 }
403 }
404
405 static gboolean
406 on_map_button_release_event(GtkWidget *widget,
407 GdkEventButton *event, map_context_t *context) {
408 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
409
410 if(context->press_on) {
411 coord_t coo;
412 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
413
414 pos_t pos =
415 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
416
417 cache_t *nearest = map_closest(context, &pos);
418 if(nearest && nearest == context->press_on) {
419 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
420 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
421
422 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
423 balloon_draw_cb, nearest);
424 }
425 }
426 context->press_on = NULL;
427 } else {
428 /* save new map position */
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
435 return FALSE;
436 }
437
438 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
439 appdata_t *appdata = context->appdata;
440
441 printf("destroy map window\n");
442
443 /* save map parameters */
444 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
445 gint zoom;
446 g_object_get(map, "zoom", &zoom, NULL);
447 context->appdata->map.zoom = zoom;
448
449 gfloat lat, lon;
450 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
451 context->appdata->map.pos.lat = lat;
452 context->appdata->map.pos.lon = lon;
453
454 #if MAEMO_VERSION_MAJOR == 5
455 /* restore cur_view */
456 context->appdata->cur_view = context->old_view;
457 #endif
458
459 gtk_timeout_remove(context->handler_id);
460
461 g_free(context);
462 appdata->map.context = NULL;
463 }
464
465 #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
466 /* get access to zoom buttons */
467 static void
468 on_window_realize(GtkWidget *widget, gpointer data) {
469 if (widget->window) {
470 unsigned char value = 1;
471 Atom hildon_zoom_key_atom =
472 gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
473 integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
474 Display *dpy =
475 GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
476 Window w = GDK_WINDOW_XID(widget->window);
477
478 XChangeProperty(dpy, w, hildon_zoom_key_atom,
479 integer_atom, 8, PropModeReplace, &value, 1);
480 }
481 }
482 #endif
483
484 void map(appdata_t *appdata) {
485 map_context_t *context = NULL;
486
487 /* if the map window already exists, just raise it */
488 if(appdata->map.context) {
489 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
490 return;
491 }
492
493 context = appdata->map.context = g_new0(map_context_t, 1);
494 context->appdata = appdata;
495 context->map_complete = FALSE;
496
497 /* cleanup old (pre 0.8.7) path if it exists */
498 char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
499 if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
500 printf("old file path %s exists\n", old_path);
501 rmdir_recursive(old_path);
502 }
503
504 /* It is recommanded that all applications share these same */
505 /* map path, so data is only cached once. The path should be: */
506 /* ~/.osm-gps-map on standard PC (users home) */
507 /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
508 /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
509 #if !defined(USE_MAEMO)
510 char *p = getenv("HOME");
511 if(!p) p = "/tmp";
512 char *path = g_strdup_printf("%s/.osm-gps-map", p);
513 #else
514 #if MAEMO_VERSION_MAJOR == 5
515 char *path = g_strdup("/home/user/.osm-gps-map");
516 #else
517 char *path = g_strdup("/media/mmc2/osm-gps-map");
518 #endif
519 #endif
520
521 const char *proxy = get_proxy_uri(appdata);
522
523 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
524 "map-source", MAP_SOURCE,
525 "tile-cache", path,
526 "auto-center", FALSE,
527 "record-trip-history", FALSE,
528 "show-trip-history", FALSE,
529 proxy?"proxy-uri":NULL, proxy,
530 NULL);
531
532 g_free(path);
533
534 osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
535
536 char *name = NULL;
537 #ifdef USE_MAEMO
538 if(!appdata->cur_gpx) {
539 #endif
540 /* draw all geocaches */
541 gpx_t *gpx = appdata->gpx;
542 while(gpx) {
543 map_draw_cachelist(context->widget, gpx->cache);
544 gpx = gpx->next;
545 }
546 name = g_strdup(_("all geocaches"));
547 #ifdef USE_MAEMO
548 } else {
549 map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
550 name = g_strdup(appdata->cur_gpx->name);
551 }
552 #endif
553
554 char *title = g_strdup_printf(_("Map - %s"), name);
555 g_free(name);
556
557 #ifdef USE_MAEMO
558 #ifdef USE_STACKABLE_WINDOW
559 context->window = hildon_stackable_window_new();
560 /* try to enable the zoom buttons. don't do this on x86 as it breaks */
561 /* at runtime with cygwin x */
562 #ifndef __i386__
563 g_signal_connect(G_OBJECT(context->window), "realize",
564 G_CALLBACK(on_window_realize), NULL);
565 #endif // MAEMO_VERSION
566 #else
567 context->window = hildon_window_new();
568 #endif
569 #else
570 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
571 #endif
572
573 gtk_window_set_title(GTK_WINDOW(context->window), title);
574
575 #ifndef USE_MAEMO
576 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
577 #endif
578
579 g_free(title);
580
581 g_signal_connect(G_OBJECT(context->widget), "configure-event",
582 G_CALLBACK(on_map_configure), context);
583
584 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
585 G_CALLBACK(on_map_button_press_event), context);
586
587 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
588 G_CALLBACK(on_map_button_release_event), context);
589
590 /* install handler for timed updates of the gps button */
591 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
592
593 #if MAEMO_VERSION_MAJOR == 5
594 /* prevent some of the main screen things */
595 context->old_view = appdata->cur_view;
596 appdata->cur_view = NULL;
597 #endif
598
599 g_signal_connect(G_OBJECT(context->window), "destroy",
600 G_CALLBACK(on_window_destroy), context);
601
602 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
603 gtk_widget_show_all(GTK_WIDGET(context->window));
604 }