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

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Revision 85 - (show annotations)
Fri Aug 28 12:07:16 2009 UTC (14 years, 8 months ago) by harbaum
File MIME type: text/plain
File size: 17243 byte(s) 
Map centering problem fixed
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 /* got a press event without release event? eat it! */
240 if(context->press_on != NULL) {
241 printf("PRESS: already\n");
242 return TRUE;
243 }
244
245 pos_t pos =
246 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
247
248 cache_t *nearest = map_closest(context, &pos);
249 if(nearest) {
250 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
251 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
252 context->press_on = nearest;
253 }
254
255 return FALSE;
256 }
257
258 static void
259 cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
260 /* convert the pixbuf into something cairo can handle */
261
262 // Create a new ImageSurface
263 cairo_surface_t *image_surface =
264 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
265 gdk_pixbuf_get_width(buf),
266 gdk_pixbuf_get_height(buf));
267
268 // Create the new Context for the ImageSurface
269 cairo_t *context = cairo_create(image_surface);
270
271 // Draw the image on the new Context
272 gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
273 cairo_paint(context);
274
275 // now draw this onto the original context
276 cairo_set_source_surface(cr, image_surface, x, y);
277
278 cairo_paint(cr);
279 }
280
281 #ifndef BIG_BALLOONS
282 #define LINE_SKIP 7
283 #else
284 #define LINE_SKIP 12
285 #endif
286
287 static void
288 balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
289 cache_t *cache = (cache_t*)data;
290
291 #if 0
292 /* draw pink background to check clipping */
293 cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
294 cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
295 cairo_fill_preserve (cr);
296 cairo_set_line_width (cr, 0);
297 cairo_stroke (cr);
298 #endif
299
300 /* leave a little border top and left */
301 gint x = rect->x, y = rect->y;
302
303 /* draw the cache type icon ... */
304 GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
305 cairo_draw_pixbuf(cr, icon, x, y);
306
307 /* ... and right of it the waypoint id */
308 cairo_text_extents_t extents;
309
310 if(cache->id) {
311 cairo_select_font_face (cr, "Sans",
312 CAIRO_FONT_SLANT_NORMAL,
313 CAIRO_FONT_WEIGHT_BOLD);
314
315 #ifndef BIG_BALLOONS
316 cairo_set_font_size (cr, 20.0);
317 #else
318 cairo_set_font_size (cr, 36.0);
319 #endif
320
321 cairo_text_extents (cr, cache->id, &extents);
322
323 /* display id right of icon vertically centered */
324 x += gdk_pixbuf_get_width(icon) + 5;
325 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
326 cairo_move_to (cr, x, y);
327 cairo_set_source_rgba (cr, 0, 0, 0, 1);
328 cairo_show_text (cr, cache->id);
329 cairo_stroke (cr);
330
331 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
332 } else
333 y += gdk_pixbuf_get_height(icon);
334
335 /* return to the left border and below icon/text */
336 x = rect->x;
337
338 /* everything from here uses the same font */
339 cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
340 CAIRO_FONT_WEIGHT_NORMAL);
341 #ifndef BIG_BALLOONS
342 cairo_set_font_size (cr, 14.0);
343 #else
344 cairo_set_font_size (cr, 22.0);
345 #endif
346
347 if(cache->name) {
348 /* draw cache name */
349 cairo_text_extents (cr, cache->name, &extents);
350 y += extents.height;
351 cairo_move_to (cr, x, y);
352 cairo_set_source_rgba (cr, 0, 0, 0, 1);
353 cairo_show_text (cr, cache->name);
354 cairo_stroke (cr);
355
356 /* return to the left border and below text */
357 y += LINE_SKIP;
358 x = rect->x;
359 }
360
361 if(cache->terrain) {
362 /* draw cache rating */
363 const char *terrain = "Terrain:";
364 icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
365 cairo_text_extents (cr, _(terrain), &extents);
366 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
367
368 /* draw "Terrain:" string */
369 cairo_move_to (cr, x, y);
370 cairo_set_source_rgba (cr, 0, 0, 0, 1);
371 cairo_show_text (cr, _(terrain));
372 cairo_stroke (cr);
373 x += extents.width + 2;
374
375 /* draw terrain stars */
376 cairo_draw_pixbuf(cr, icon, x, y -
377 (gdk_pixbuf_get_height(icon) + extents.height)/2);
378
379 x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
380 y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
381 }
382
383 if(cache->difficulty) {
384 const char *difficulty = "Difficulty:";
385 cairo_text_extents (cr, _(difficulty), &extents);
386 y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
387
388 /* draw "Difficulty:" string */
389 cairo_move_to (cr, x, y);
390 cairo_set_source_rgba (cr, 0, 0, 0, 1);
391 cairo_show_text (cr, _(difficulty));
392 cairo_stroke (cr);
393 x += extents.width + 2;
394
395 icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
396 cairo_draw_pixbuf(cr, icon, x, y -
397 (gdk_pixbuf_get_height(icon) + extents.height)/2);
398 }
399 }
400
401 static gboolean
402 on_map_button_release_event(GtkWidget *widget,
403 GdkEventButton *event, map_context_t *context) {
404 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
405
406 if(context->press_on) {
407 coord_t coo;
408 coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
409
410 pos_t pos =
411 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
412
413 cache_t *nearest = map_closest(context, &pos);
414 if(nearest && nearest == context->press_on) {
415 float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
416 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
417
418 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
419 balloon_draw_cb, nearest);
420 }
421 }
422 context->press_on = NULL;
423 } else {
424 /* save new map position */
425 gfloat lat, lon;
426 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
427 context->appdata->map.pos.lat = lat;
428 context->appdata->map.pos.lon = lon;
429 }
430
431 return FALSE;
432 }
433
434 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
435 appdata_t *appdata = context->appdata;
436
437 printf("destroy map window\n");
438
439 /* save map parameters */
440 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
441 gint zoom;
442 g_object_get(map, "zoom", &zoom, NULL);
443 context->appdata->map.zoom = zoom;
444
445 gfloat lat, lon;
446 g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
447 context->appdata->map.pos.lat = lat;
448 context->appdata->map.pos.lon = lon;
449
450 #if MAEMO_VERSION_MAJOR == 5
451 /* restore cur_view */
452 context->appdata->cur_view = context->old_view;
453 #endif
454
455 gtk_timeout_remove(context->handler_id);
456
457 g_free(context);
458 appdata->map.context = NULL;
459 }
460
461 #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
462 /* get access to zoom buttons */
463 static void
464 on_window_realize(GtkWidget *widget, gpointer data) {
465 if (widget->window) {
466 unsigned char value = 1;
467 Atom hildon_zoom_key_atom =
468 gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
469 integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
470 Display *dpy =
471 GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
472 Window w = GDK_WINDOW_XID(widget->window);
473
474 XChangeProperty(dpy, w, hildon_zoom_key_atom,
475 integer_atom, 8, PropModeReplace, &value, 1);
476 }
477 }
478 #endif
479
480 void map(appdata_t *appdata) {
481 map_context_t *context = NULL;
482
483 /* if the map window already exists, just raise it */
484 if(appdata->map.context) {
485 gtk_window_present(GTK_WINDOW(appdata->map.context->window));
486 return;
487 }
488
489 context = appdata->map.context = g_new0(map_context_t, 1);
490 context->appdata = appdata;
491 context->map_complete = FALSE;
492
493 /* cleanup old (pre 0.8.7) path if it exists */
494 char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
495 if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
496 printf("old file path %s exists\n", old_path);
497 rmdir_recursive(old_path);
498 }
499
500 /* It is recommanded that all applications share these same */
501 /* map path, so data is only cached once. The path should be: */
502 /* ~/.osm-gps-map on standard PC (users home) */
503 /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
504 /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
505 #if !defined(USE_MAEMO)
506 char *p = getenv("HOME");
507 if(!p) p = "/tmp";
508 char *path = g_strdup_printf("%s/.osm-gps-map", p);
509 #else
510 #if MAEMO_VERSION_MAJOR == 5
511 char *path = g_strdup("/home/user/.osm-gps-map");
512 #else
513 char *path = g_strdup("/media/mmc2/osm-gps-map");
514 #endif
515 #endif
516
517 const char *proxy = get_proxy_uri(appdata);
518
519 context->widget = g_object_new(OSM_TYPE_GPS_MAP,
520 "map-source", MAP_SOURCE,
521 "tile-cache", path,
522 "auto-center", FALSE,
523 "record-trip-history", FALSE,
524 "show-trip-history", FALSE,
525 proxy?"proxy-uri":NULL, proxy,
526 NULL);
527
528 g_free(path);
529
530 osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
531
532 char *name = NULL;
533 #ifdef USE_MAEMO
534 if(!appdata->cur_gpx) {
535 #endif
536 /* draw all geocaches */
537 gpx_t *gpx = appdata->gpx;
538 while(gpx) {
539 map_draw_cachelist(context->widget, gpx->cache);
540 gpx = gpx->next;
541 }
542 name = g_strdup(_("all geocaches"));
543 #ifdef USE_MAEMO
544 } else {
545 map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
546 name = g_strdup(appdata->cur_gpx->name);
547 }
548 #endif
549
550 char *title = g_strdup_printf(_("Map - %s"), name);
551 g_free(name);
552
553 #ifdef USE_MAEMO
554 #ifdef USE_STACKABLE_WINDOW
555 context->window = hildon_stackable_window_new();
556 /* try to enable the zoom buttons. don't do this on x86 as it breaks */
557 /* at runtime with cygwin x */
558 #ifndef __i386__
559 g_signal_connect(G_OBJECT(context->window), "realize",
560 G_CALLBACK(on_window_realize), NULL);
561 #endif // MAEMO_VERSION
562 #else
563 context->window = hildon_window_new();
564 #endif
565 #else
566 context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
567 #endif
568
569 gtk_window_set_title(GTK_WINDOW(context->window), title);
570
571 #ifndef USE_MAEMO
572 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
573 #endif
574
575 g_free(title);
576
577 g_signal_connect(G_OBJECT(context->widget), "configure-event",
578 G_CALLBACK(on_map_configure), context);
579
580 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
581 G_CALLBACK(on_map_button_press_event), context);
582
583 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
584 G_CALLBACK(on_map_button_release_event), context);
585
586 /* install handler for timed updates of the gps button */
587 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
588
589 #if MAEMO_VERSION_MAJOR == 5
590 /* prevent some of the main screen things */
591 context->old_view = appdata->cur_view;
592 appdata->cur_view = NULL;
593 #endif
594
595 g_signal_connect(G_OBJECT(context->window), "destroy",
596 G_CALLBACK(on_window_destroy), context);
597
598 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
599 gtk_widget_show_all(GTK_WIDGET(context->window));
600 }