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

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Revision 63 - (hide annotations)
Wed Aug 19 12:35:25 2009 UTC (14 years, 8 months ago) by harbaum
File MIME type: text/plain
File size: 14850 byte(s) 
osm-gps-map OSD 90% done
1 harbaum 33 /*
2 harbaum 55 * Copyright (C) 2008-2009 Till Harbaum <till@harbaum.org>.
3 harbaum 33 *
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 harbaum 61 #include "converter.h"
22 harbaum 34 #include <math.h> // for isnan
23 harbaum 33
24     #ifdef ENABLE_OSM_GPS_MAP
25     #include "osm-gps-map.h"
26     #endif
27    
28 harbaum 55 #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP
29 harbaum 48 #define GPS_DEFAULT_ZOOM 13
30    
31 harbaum 34 #define PROXY_KEY "/system/http_proxy/"
32    
33     static const char *get_proxy_uri(appdata_t *appdata) {
34     static char proxy_buffer[64] = "";
35 harbaum 33
36     /* use environment settings if preset */
37     const char *proxy = g_getenv("http_proxy");
38     if(proxy) {
39     printf("http_proxy: %s\n", proxy);
40     return proxy;
41     }
42    
43 harbaum 34 /* ------------- get proxy settings -------------------- */
44     if(gconf_client_get_bool(appdata->gconf_client,
45     PROXY_KEY "use_http_proxy", NULL)) {
46 harbaum 33
47 harbaum 34 /* we can savely ignore things like "ignore_hosts" since we */
48     /* are pretty sure not inside the net of one of our map renderers */
49     /* (unless the user works at google :-) */
50    
51     /* get basic settings */
52     char *host =
53     gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
54     if(host) {
55     int port =
56     gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
57 harbaum 33
58 harbaum 34 snprintf(proxy_buffer, sizeof(proxy_buffer),
59     "http://%s:%u", host, port);
60 harbaum 33
61 harbaum 34 g_free(host);
62     }
63 harbaum 35 return proxy_buffer;
64 harbaum 34 }
65    
66 harbaum 35 return NULL;
67 harbaum 33 }
68    
69 harbaum 63 /* TODO: This needs to be wired to the GPS button in osm_gps_map */
70     #if 0
71 harbaum 33 static gboolean
72     cb_map_gps(GtkButton *button, map_context_t *context) {
73 harbaum 34 pos_t *refpos = get_pos(context->appdata);
74     if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
75 harbaum 35 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
76 harbaum 48 refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
77 harbaum 35 } else {
78     /* no coordinates given: display the entire world */
79     osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
80     0.0, 0.0, 1);
81 harbaum 34 }
82 harbaum 33
83     return FALSE;
84     }
85     #endif
86    
87 harbaum 55 static int dist2pixel(map_context_t *context, float km, float lat) {
88     return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
89     }
90    
91 harbaum 33 static gboolean map_gps_update(gpointer data) {
92     map_context_t *context = (map_context_t*)data;
93    
94 harbaum 51 /* get reference position ... */
95 harbaum 34 pos_t *refpos = get_pos(context->appdata);
96     gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
97 harbaum 33
98 harbaum 51 /* ... and enable "goto" button if it's valid */
99 harbaum 63 /* TODO: gtk_widget_set_sensitive(context->gps, ok); */
100 harbaum 34
101 harbaum 51 if(ok) {
102 harbaum 53 float heading = NAN;
103 harbaum 54 int radius = 0;
104 harbaum 51
105 harbaum 53 if(context->appdata->use_gps) {
106     heading = gps_get_heading(context->appdata);
107    
108     /* get error */
109     float eph = gps_get_eph(context->appdata);
110 harbaum 55 if(!isnan(eph))
111     radius = dist2pixel(context, eph/1000, refpos->lat);
112 harbaum 53 }
113    
114     g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
115     osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
116 harbaum 51 refpos->lat, refpos->lon, heading);
117     } else
118     osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
119    
120 harbaum 33 return TRUE;
121     }
122    
123 harbaum 35 static gboolean on_map_configure(GtkWidget *widget,
124     GdkEventConfigure *event,
125     map_context_t *context) {
126 harbaum 33
127 harbaum 48 /* set default values if they are invalid */
128     if(!context->appdata->map.zoom ||
129     isnan(context->appdata->map.pos.lat) ||
130     isnan(context->appdata->map.pos.lon)) {
131     printf("no valid map position found\n");
132    
133     pos_t *refpos = get_pos(context->appdata);
134     if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
135     /* use gps position if present */
136     context->appdata->map.pos = *refpos;
137     context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
138     } else {
139     /* use world map otherwise */
140     context->appdata->map.pos.lat = 0.0;
141     context->appdata->map.pos.lon = 0.0;
142     context->appdata->map.zoom = 1;
143     }
144     }
145 harbaum 35
146 harbaum 48 /* jump to initial position */
147     osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
148     context->appdata->map.pos.lat,
149     context->appdata->map.pos.lon,
150     context->appdata->map.zoom);
151    
152 harbaum 35 return FALSE;
153     }
154    
155 harbaum 38 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
156     while(cache) {
157     GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
158    
159     osm_gps_map_add_image(OSM_GPS_MAP(map),
160     cache->pos.lat, cache->pos.lon, icon);
161    
162     cache = cache->next;
163     }
164     }
165    
166 harbaum 41 static void
167     map_cachelist_nearest(cache_t *cache, pos_t *pos,
168     cache_t **result, float *distance) {
169     while(cache) {
170     float dist =
171     pow(cache->pos.lat - pos->lat, 2) +
172     pow(cache->pos.lon - pos->lon, 2);
173    
174     if(!(dist > *distance)) {
175     *result = cache;
176     *distance = dist;
177     }
178    
179     cache = cache->next;
180     }
181     }
182    
183     static cache_t *map_closest(map_context_t *context, pos_t *pos) {
184     cache_t *result = NULL;
185     float distance = NAN;
186    
187     #ifdef USE_MAEMO
188     if(!context->appdata->cur_gpx) {
189     #endif
190     /* search all geocaches */
191     gpx_t *gpx = context->appdata->gpx;
192     while(gpx) {
193     map_cachelist_nearest(gpx->cache, pos, &result, &distance);
194     gpx = gpx->next;
195     }
196     #ifdef USE_MAEMO
197     } else {
198     map_cachelist_nearest(context->appdata->cur_gpx->cache,
199     pos, &result, &distance);
200     }
201     #endif
202    
203     return result;
204     }
205    
206     /* translate between osm-gps-map positions and gpxview ones */
207     pos_t coord2pos(coord_t coo) {
208     pos_t pos;
209 harbaum 61 pos.lat = rad2deg(coo.rlat);
210     pos.lon = rad2deg(coo.rlon);
211 harbaum 41 return pos;
212     }
213    
214 harbaum 47 #define CLICK_FUZZ (24)
215 harbaum 42
216 harbaum 41 static gboolean
217     on_map_button_press_event(GtkWidget *widget,
218     GdkEventButton *event, map_context_t *context) {
219     OsmGpsMap *map = OSM_GPS_MAP(context->widget);
220    
221 harbaum 44 /* got a press event without release event? eat it! */
222     if(context->press_on != NULL) {
223     printf("PRESS: already\n");
224     return TRUE;
225     }
226    
227 harbaum 41 pos_t pos =
228 harbaum 42 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
229 harbaum 41
230 harbaum 42 cache_t *nearest = map_closest(context, &pos);
231     if(nearest) {
232     float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
233 harbaum 44 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
234 harbaum 42 context->press_on = nearest;
235     }
236 harbaum 44
237 harbaum 41 return FALSE;
238     }
239    
240 harbaum 58 static void
241     cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
242     /* convert the pixbuf into something cairo can handle */
243    
244     // Create a new ImageSurface
245     cairo_surface_t *image_surface =
246     cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
247     gdk_pixbuf_get_width(buf),
248     gdk_pixbuf_get_height(buf));
249    
250     // Create the new Context for the ImageSurface
251     cairo_t *context = cairo_create(image_surface);
252    
253     // Draw the image on the new Context
254     gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
255     cairo_paint(context);
256    
257     // now draw this onto the original context
258     cairo_set_source_surface(cr, image_surface, x, y);
259 harbaum 60
260 harbaum 58 cairo_paint(cr);
261     }
262    
263 harbaum 60 #define LINE_SKIP 7
264 harbaum 59
265 harbaum 58 static void
266     balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
267     cache_t *cache = (cache_t*)data;
268    
269     // printf("draw cb for \"%s\"\n", cache->name);
270    
271     #if 0
272     /* draw pink background to check clipping */
273     cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
274     cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
275     cairo_fill_preserve (cr);
276     cairo_set_line_width (cr, 0);
277     cairo_stroke (cr);
278     #endif
279    
280     /* leave a little border top and left */
281     gint x = rect->x, y = rect->y;
282    
283     /* draw the cache type icon ... */
284     GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
285     cairo_draw_pixbuf(cr, icon, x, y);
286    
287     /* ... and right of it the waypoint id */
288     cairo_text_extents_t extents;
289    
290 harbaum 60 if(cache->id) {
291     cairo_select_font_face (cr, "Sans",
292     CAIRO_FONT_SLANT_NORMAL,
293     CAIRO_FONT_WEIGHT_BOLD);
294 harbaum 58
295 harbaum 60 cairo_set_font_size (cr, 20.0);
296     cairo_text_extents (cr, cache->id, &extents);
297 harbaum 58
298 harbaum 60 /* display id right of icon vertically centered */
299     x += gdk_pixbuf_get_width(icon) + 5;
300     y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
301     cairo_move_to (cr, x, y);
302     cairo_set_source_rgba (cr, 0, 0, 0, 1);
303     cairo_show_text (cr, cache->id);
304     cairo_stroke (cr);
305 harbaum 59
306 harbaum 60 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
307     } else
308     y += gdk_pixbuf_get_height(icon);
309    
310 harbaum 59 /* return to the left border and below icon/text */
311     x = rect->x;
312    
313 harbaum 60 /* everything from here uses the same font */
314     cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
315 harbaum 59 CAIRO_FONT_WEIGHT_NORMAL);
316     cairo_set_font_size (cr, 14.0);
317    
318 harbaum 60 if(cache->name) {
319     /* draw cache name */
320     cairo_text_extents (cr, cache->name, &extents);
321     y += extents.height;
322     cairo_move_to (cr, x, y);
323     cairo_set_source_rgba (cr, 0, 0, 0, 1);
324     cairo_show_text (cr, cache->name);
325     cairo_stroke (cr);
326 harbaum 58
327 harbaum 60 /* return to the left border and below text */
328     y += LINE_SKIP;
329     x = rect->x;
330     }
331    
332     if(cache->terrain) {
333     /* draw cache rating */
334     const char *terrain = "Terrain:";
335     icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
336     cairo_text_extents (cr, _(terrain), &extents);
337     y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
338    
339     /* draw "Terrain:" string */
340     cairo_move_to (cr, x, y);
341     cairo_set_source_rgba (cr, 0, 0, 0, 1);
342     cairo_show_text (cr, _(terrain));
343     cairo_stroke (cr);
344     x += extents.width + 2;
345    
346     /* draw terrain stars */
347     cairo_draw_pixbuf(cr, icon, x, y -
348     (gdk_pixbuf_get_height(icon) + extents.height)/2);
349    
350     x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
351     y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
352     }
353    
354     if(cache->difficulty) {
355     const char *difficulty = "Difficulty:";
356     cairo_text_extents (cr, _(difficulty), &extents);
357     y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
358    
359     /* draw "Difficulty:" string */
360     cairo_move_to (cr, x, y);
361     cairo_set_source_rgba (cr, 0, 0, 0, 1);
362     cairo_show_text (cr, _(difficulty));
363     cairo_stroke (cr);
364     x += extents.width + 2;
365    
366     icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
367     cairo_draw_pixbuf(cr, icon, x, y -
368     (gdk_pixbuf_get_height(icon) + extents.height)/2);
369     }
370 harbaum 58 }
371    
372 harbaum 41 static gboolean
373     on_map_button_release_event(GtkWidget *widget,
374     GdkEventButton *event, map_context_t *context) {
375 harbaum 48 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
376    
377 harbaum 42 if(context->press_on) {
378 harbaum 57 coord_t coo;
379     coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
380    
381 harbaum 42 pos_t pos =
382     coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
383 harbaum 41
384 harbaum 42 cache_t *nearest = map_closest(context, &pos);
385     if(nearest && nearest == context->press_on) {
386     float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
387 harbaum 57 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
388    
389 harbaum 58 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
390     balloon_draw_cb, nearest);
391 harbaum 57 }
392 harbaum 42 }
393 harbaum 44 context->press_on = NULL;
394 harbaum 48 } else {
395     /* save new map position */
396     gfloat lat, lon;
397     g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
398     context->appdata->map.pos.lat = lat;
399     context->appdata->map.pos.lon = lon;
400 harbaum 41 }
401    
402     return FALSE;
403     }
404    
405 harbaum 56 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
406     appdata_t *appdata = context->appdata;
407    
408     printf("destroy map window\n");
409    
410 harbaum 48 /* save map parameters */
411     OsmGpsMap *map = OSM_GPS_MAP(context->widget);
412     gint zoom;
413     g_object_get(map, "zoom", &zoom, NULL);
414     context->appdata->map.zoom = zoom;
415 harbaum 44
416 harbaum 48 gfloat lat, lon;
417     g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
418     context->appdata->map.pos.lat = lat;
419     context->appdata->map.pos.lon = lon;
420    
421 harbaum 40 #if MAEMO_VERSION_MAJOR == 5
422     /* restore cur_view */
423     context->appdata->cur_view = context->old_view;
424 harbaum 56 #endif
425 harbaum 40
426     gtk_timeout_remove(context->handler_id);
427 harbaum 56
428 harbaum 40 g_free(context);
429 harbaum 56 appdata->map.context = NULL;
430 harbaum 40 }
431    
432 harbaum 33 void map(appdata_t *appdata) {
433 harbaum 56 map_context_t *context = NULL;
434    
435     /* if the map window already exists, just raise it */
436     if(appdata->map.context) {
437     gtk_window_present(GTK_WINDOW(appdata->map.context->window));
438     return;
439     }
440    
441     context = appdata->map.context = g_new0(map_context_t, 1);
442 harbaum 40 context->appdata = appdata;
443 harbaum 33
444 harbaum 41 char *path = g_strdup_printf("%s/map/", appdata->image_path);
445     const char *proxy = get_proxy_uri(appdata);
446    
447     context->widget = g_object_new(OSM_TYPE_GPS_MAP,
448 harbaum 55 "map-source", MAP_SOURCE,
449     "tile-cache", path,
450     "auto-center", FALSE,
451     "record-trip-history", FALSE,
452     "show-trip-history", FALSE,
453     proxy?"proxy-uri":NULL, proxy,
454 harbaum 41 NULL);
455    
456     g_free(path);
457    
458     char *name = NULL;
459     #ifdef USE_MAEMO
460     if(!appdata->cur_gpx) {
461     #endif
462     /* draw all geocaches */
463     gpx_t *gpx = appdata->gpx;
464     while(gpx) {
465     map_draw_cachelist(context->widget, gpx->cache);
466     gpx = gpx->next;
467     }
468     name = g_strdup(_("all geocaches"));
469     #ifdef USE_MAEMO
470     } else {
471     map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
472 harbaum 44 name = g_strdup(appdata->cur_gpx->name);
473 harbaum 41 }
474     #endif
475    
476     char *title = g_strdup_printf(_("Map - %s"), name);
477     g_free(name);
478    
479 harbaum 56 #ifdef USE_MAEMO
480     #ifdef USE_STACKABLE_WINDOW
481     context->window = hildon_stackable_window_new();
482 harbaum 40 #else
483 harbaum 56 context->window = hildon_window_new();
484     #endif
485     #else
486     context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
487     #endif
488 harbaum 33
489 harbaum 56 gtk_window_set_title(GTK_WINDOW(context->window), title);
490    
491 harbaum 33 #ifndef USE_MAEMO
492 harbaum 56 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
493 harbaum 33 #endif
494    
495 harbaum 41 g_free(title);
496 harbaum 33
497 harbaum 41 g_signal_connect(G_OBJECT(context->widget), "configure-event",
498     G_CALLBACK(on_map_configure), context);
499 harbaum 33
500 harbaum 41 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
501     G_CALLBACK(on_map_button_press_event), context);
502 harbaum 33
503 harbaum 40 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
504     G_CALLBACK(on_map_button_release_event), context);
505 harbaum 33
506 harbaum 63 /* TODO: gtk_widget_set_sensitive(context->gps, FALSE); */
507 harbaum 33
508     /* install handler for timed updates of the gps button */
509 harbaum 40 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
510 harbaum 33
511 harbaum 40 #if MAEMO_VERSION_MAJOR == 5
512     /* prevent some of the main screen things */
513     context->old_view = appdata->cur_view;
514     appdata->cur_view = NULL;
515 harbaum 56 #endif
516 harbaum 40
517 harbaum 56 g_signal_connect(G_OBJECT(context->window), "destroy",
518 harbaum 40 G_CALLBACK(on_window_destroy), context);
519    
520 harbaum 63 gtk_container_add(GTK_CONTAINER(context->window), context->widget);
521 harbaum 56 gtk_widget_show_all(GTK_WIDGET(context->window));
522 harbaum 33 }