trunk/src/map-tool.c

/*
 * Copyright (C) 2008-2009 Till Harbaum <till@harbaum.org>.
 *
 * This file is part of GPXView.
 *
 * GPXView is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GPXView is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GPXView.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "gpxview.h"
#include <math.h>    // for isnan

#ifdef ENABLE_OSM_GPS_MAP
#include "osm-gps-map.h"
#endif

#define MAP_SOURCE  OSM_GPS_MAP_SOURCE_OPENSTREETMAP
#define GPS_DEFAULT_ZOOM 13

/* equatorial radius in meters */
#define EQ_RADIUS     (6378137.0)

#define RAD2DEG(a)  (((a)*180.0)/M_PI)
#define DEG2RAD(a)  (((a)*M_PI)/180.0)

#define PROXY_KEY  "/system/http_proxy/"

static const char *get_proxy_uri(appdata_t *appdata) {
  static char proxy_buffer[64] = "";
  
  /* use environment settings if preset */
  const char *proxy = g_getenv("http_proxy");
  if(proxy) {
    printf("http_proxy: %s\n", proxy);
    return proxy;
  }

  /* ------------- get proxy settings -------------------- */
  if(gconf_client_get_bool(appdata->gconf_client, 
                           PROXY_KEY "use_http_proxy", NULL)) {

    /* we can savely ignore things like "ignore_hosts" since we */
    /* are pretty sure not inside the net of one of our map renderers */
    /* (unless the user works at google :-) */
      
    /* get basic settings */
    char *host = 
      gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
    if(host) {
      int port =
        gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);

      snprintf(proxy_buffer, sizeof(proxy_buffer),
               "http://%s:%u", host, port);

      g_free(host);
    }
    return proxy_buffer;
  }

  return NULL;
}

static void map_zoom(map_context_t *context, int step) {
  gint zoom;
  OsmGpsMap *map = OSM_GPS_MAP(context->widget);
  g_object_get(map, "zoom", &zoom, NULL);
  zoom = osm_gps_map_set_zoom(map, zoom+step);

  /* enable/disable zoom buttons as required */
  gtk_widget_set_sensitive(context->zoomin, 
           zoom < osm_gps_map_source_get_max_zoom(MAP_SOURCE));
  gtk_widget_set_sensitive(context->zoomout,
           zoom > osm_gps_map_source_get_min_zoom(MAP_SOURCE));

  /* hmm ... this doesn't really work */
  osm_gps_map_osd_speed(map, zoom);

  /* save new zoom */
  context->appdata->map.zoom = zoom;
}

static gboolean
cb_map_zoomin(GtkButton *button, map_context_t *context) {
  map_zoom(context, +1);
  return FALSE;
}

static gboolean
cb_map_zoomout(GtkButton *button, map_context_t *context) {
  map_zoom(context, -1);
  return FALSE;
}

static gboolean
cb_map_gps(GtkButton *button, map_context_t *context) {
  pos_t *refpos = get_pos(context->appdata);
  if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
    osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
                      refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);     
  } else {
    /* no coordinates given: display the entire world */
    osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), 
                              0.0, 0.0, 1);
  }

  return FALSE;
}

static GtkWidget 
*map_add_button(int icon, GCallback cb, gpointer data, 
                char *tooltip) {
  GtkWidget *button = gtk_button_new();
  gtk_button_set_image(GTK_BUTTON(button), icon_get_widget(ICON_MISC, icon));
  g_signal_connect(button, "clicked", cb, data);
#ifndef USE_MAEMO
  gtk_widget_set_tooltip_text(button, tooltip);
#endif
  return button;
}

static int dist2pixel(map_context_t *context, float km, float lat) {
  return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
}

static gboolean map_gps_update(gpointer data) {
  map_context_t *context = (map_context_t*)data;

  /* get reference position ... */
  pos_t *refpos = get_pos(context->appdata);
  gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);

  /* ... and enable "goto" button if it's valid */
  gtk_widget_set_sensitive(context->gps, ok);

  if(ok) {
    float heading = NAN;
    int radius = 0;

    if(context->appdata->use_gps) {
      heading = gps_get_heading(context->appdata);

      /* get error */
      float eph = gps_get_eph(context->appdata);
      if(!isnan(eph)) 
        radius = dist2pixel(context, eph/1000, refpos->lat);
    }

    g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
    osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget), 
                         refpos->lat, refpos->lon, heading);
  } else
    osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
  
  return TRUE;
}

static gboolean on_map_configure(GtkWidget *widget,
                                 GdkEventConfigure *event,
                                 map_context_t *context) {

  /* set default values if they are invalid */
  if(!context->appdata->map.zoom || 
     isnan(context->appdata->map.pos.lat) ||
     isnan(context->appdata->map.pos.lon)) {
    printf("no valid map position found\n");
    
    pos_t *refpos = get_pos(context->appdata);
    if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
      /* use gps position if present */
      context->appdata->map.pos = *refpos;
      context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
    } else {
      /* use world map otherwise */
      context->appdata->map.pos.lat = 0.0;
      context->appdata->map.pos.lon = 0.0;
      context->appdata->map.zoom = 1;
    }
  }

  /* jump to initial position */
  osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), 
                            context->appdata->map.pos.lat, 
                            context->appdata->map.pos.lon, 
                            context->appdata->map.zoom);
  
  return FALSE;
}

static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
  while(cache) {
    GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
    
    osm_gps_map_add_image(OSM_GPS_MAP(map), 
                          cache->pos.lat, cache->pos.lon, icon);

    cache = cache->next;
  }
}

static void
map_cachelist_nearest(cache_t *cache, pos_t *pos, 
                      cache_t **result, float *distance) {
  while(cache) {
    float dist = 
      pow(cache->pos.lat - pos->lat, 2) + 
      pow(cache->pos.lon - pos->lon, 2);

    if(!(dist > *distance)) {
      *result = cache;
      *distance = dist;
    }

    cache = cache->next;
  }
}

static cache_t *map_closest(map_context_t *context, pos_t *pos) {
  cache_t *result = NULL;
  float distance = NAN;
  
#ifdef USE_MAEMO
  if(!context->appdata->cur_gpx) {
#endif
    /* search all geocaches */
    gpx_t *gpx = context->appdata->gpx;
    while(gpx) {
      map_cachelist_nearest(gpx->cache, pos, &result, &distance);
      gpx = gpx->next;
    }
#ifdef USE_MAEMO
  } else {
    map_cachelist_nearest(context->appdata->cur_gpx->cache, 
                          pos, &result, &distance);
  }
#endif

  return result;
}

/* translate between osm-gps-map positions and gpxview ones */
pos_t coord2pos(coord_t coo) {
  pos_t pos;
  pos.lat = RAD2DEG(coo.rlat);
  pos.lon = RAD2DEG(coo.rlon);
  return pos;
}

#define CLICK_FUZZ (24)

static gboolean
on_map_button_press_event(GtkWidget *widget, 
                            GdkEventButton *event, map_context_t *context) {
  OsmGpsMap *map = OSM_GPS_MAP(context->widget);

  /* got a press event without release event? eat it! */
  if(context->press_on != NULL) {
    printf("PRESS: already\n");
    return TRUE;
  }

  pos_t pos = 
    coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));

  cache_t *nearest = map_closest(context, &pos);  
  if(nearest) {
    float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
    if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) 
      context->press_on = nearest;
  }
  
  return FALSE;
}

static gboolean
on_map_button_release_event(GtkWidget *widget, 
                            GdkEventButton *event, map_context_t *context) {
  OsmGpsMap *map = OSM_GPS_MAP(context->widget);

  if(context->press_on) {
    coord_t coo;
    coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);

    pos_t pos = 
      coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));

    cache_t *nearest = map_closest(context, &pos);  
    if(nearest && nearest == context->press_on) {
      float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
      if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
        
        osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon);
      }
    }
    context->press_on = NULL;
  } else {
    /* save new map position */
    gfloat lat, lon;
    g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
    context->appdata->map.pos.lat = lat;
    context->appdata->map.pos.lon = lon;
  }

  return FALSE;
}

static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
  appdata_t *appdata = context->appdata;
  
  printf("destroy map window\n");

  /* save map parameters */
  OsmGpsMap *map = OSM_GPS_MAP(context->widget);
  gint zoom;
  g_object_get(map, "zoom", &zoom, NULL);
  context->appdata->map.zoom = zoom;

  gfloat lat, lon;
  g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
  context->appdata->map.pos.lat = lat;
  context->appdata->map.pos.lon = lon;

#if MAEMO_VERSION_MAJOR == 5
  /* restore cur_view */
  context->appdata->cur_view = context->old_view;
#endif

  gtk_timeout_remove(context->handler_id);

  g_free(context);
  appdata->map.context = NULL;
}

void map(appdata_t *appdata) {
  map_context_t *context = NULL; 

  /* if the map window already exists, just raise it */
  if(appdata->map.context) {
    gtk_window_present(GTK_WINDOW(appdata->map.context->window));
    return;
  }

  context = appdata->map.context = g_new0(map_context_t, 1);
  context->appdata = appdata;

  GtkWidget *hbox = gtk_hbox_new(FALSE, 0);

  char *path = g_strdup_printf("%s/map/", appdata->image_path);
  const char *proxy = get_proxy_uri(appdata);

  context->widget = g_object_new(OSM_TYPE_GPS_MAP,
                 "map-source",               MAP_SOURCE,
                 "tile-cache",               path,
                 "auto-center",              FALSE,
                 "record-trip-history",      FALSE, 
                 "show-trip-history",        FALSE, 
                 proxy?"proxy-uri":NULL,     proxy,
                 NULL);

  g_free(path);

  char *name = NULL;
#ifdef USE_MAEMO
  if(!appdata->cur_gpx) {
#endif
    /* draw all geocaches */
    gpx_t *gpx = appdata->gpx;
    while(gpx) {
      map_draw_cachelist(context->widget, gpx->cache);
      gpx = gpx->next;
    }
    name = g_strdup(_("all geocaches"));
#ifdef USE_MAEMO
  } else {
    map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
    name = g_strdup(appdata->cur_gpx->name);
  }
#endif

  char *title = g_strdup_printf(_("Map - %s"), name);
  g_free(name);

#ifdef USE_MAEMO
#ifdef USE_STACKABLE_WINDOW
  context->window = hildon_stackable_window_new();
#else
  context->window = hildon_window_new();
#endif
#else
  context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
#endif

  gtk_window_set_title(GTK_WINDOW(context->window), title);

#ifndef USE_MAEMO
  gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
#endif

  g_free(title);

  g_signal_connect(G_OBJECT(context->widget), "configure-event",
                   G_CALLBACK(on_map_configure), context);

  g_signal_connect(G_OBJECT(context->widget), "button-press-event",
                   G_CALLBACK(on_map_button_press_event), context);

  g_signal_connect(G_OBJECT(context->widget), "button-release-event",
                   G_CALLBACK(on_map_button_release_event), context);

  gtk_box_pack_start_defaults(GTK_BOX(hbox), context->widget);
  /* zoom button box */
  GtkWidget *vbox = gtk_vbox_new(FALSE,0);

  context->zoomin = 
    map_add_button(10, G_CALLBACK(cb_map_zoomin),
                   context, _("Zoom in"));
  gtk_box_pack_start(GTK_BOX(vbox), context->zoomin, FALSE, FALSE, 0);

  context->zoomout = 
    map_add_button(11, G_CALLBACK(cb_map_zoomout),
                   context, _("Zoom out"));
  gtk_box_pack_start(GTK_BOX(vbox), context->zoomout, FALSE, FALSE, 0);

  context->gps = 
    map_add_button(9, G_CALLBACK(cb_map_gps),
                   context, _("Jump to GPS position"));
  gtk_widget_set_sensitive(context->gps, FALSE);

  /* install handler for timed updates of the gps button */
  context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
  gtk_box_pack_start(GTK_BOX(vbox), context->gps, FALSE, FALSE, 0);

  gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0);

#if MAEMO_VERSION_MAJOR == 5
  /* prevent some of the main screen things */
  context->old_view = appdata->cur_view;
  appdata->cur_view = NULL;
#endif

  g_signal_connect(G_OBJECT(context->window), "destroy", 
                   G_CALLBACK(on_window_destroy), context);

  gtk_container_add(GTK_CONTAINER(context->window), hbox); 
  gtk_widget_show_all(GTK_WIDGET(context->window));
}
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 <math.h> // for isnan
22
23	#ifdef ENABLE_OSM_GPS_MAP
24	#include "osm-gps-map.h"
25	#endif
26
27	#define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP
28	#define GPS_DEFAULT_ZOOM 13
29
30	/* equatorial radius in meters */
31	#define EQ_RADIUS (6378137.0)
32
33	#define RAD2DEG(a) (((a)*180.0)/M_PI)
34	#define DEG2RAD(a) (((a)*M_PI)/180.0)
35
36	#define PROXY_KEY "/system/http_proxy/"
37
38	static const char get_proxy_uri(appdata_t appdata) {
39	static char proxy_buffer[64] = "";
40
41	/* use environment settings if preset */
42	const char *proxy = g_getenv("http_proxy");
43	if(proxy) {
44	printf("http_proxy: %s\n", proxy);
45	return proxy;
46	}
47
48	/* ------------- get proxy settings -------------------- */
49	if(gconf_client_get_bool(appdata->gconf_client,
50	PROXY_KEY "use_http_proxy", NULL)) {
51
52	/* we can savely ignore things like "ignore_hosts" since we */
53	/* are pretty sure not inside the net of one of our map renderers */
54	/* (unless the user works at google :-) */
55
56	/* get basic settings */
57	char *host =
58	gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
59	if(host) {
60	int port =
61	gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
62
63	snprintf(proxy_buffer, sizeof(proxy_buffer),
64	"http://%s:%u", host, port);
65
66	g_free(host);
67	}
68	return proxy_buffer;
69	}
70
71	return NULL;
72	}
73
74	static void map_zoom(map_context_t *context, int step) {
75	gint zoom;
76	OsmGpsMap *map = OSM_GPS_MAP(context->widget);
77	g_object_get(map, "zoom", &zoom, NULL);
78	zoom = osm_gps_map_set_zoom(map, zoom+step);
79
80	/* enable/disable zoom buttons as required */
81	gtk_widget_set_sensitive(context->zoomin,
82	zoom < osm_gps_map_source_get_max_zoom(MAP_SOURCE));
83	gtk_widget_set_sensitive(context->zoomout,
84	zoom > osm_gps_map_source_get_min_zoom(MAP_SOURCE));
85
86	/* hmm ... this doesn't really work */
87	osm_gps_map_osd_speed(map, zoom);
88
89	/* save new zoom */
90	context->appdata->map.zoom = zoom;
91	}
92
93	static gboolean
94	cb_map_zoomin(GtkButton button, map_context_t context) {
95	map_zoom(context, +1);
96	return FALSE;
97	}
98
99	static gboolean
100	cb_map_zoomout(GtkButton button, map_context_t context) {
101	map_zoom(context, -1);
102	return FALSE;
103	}
104
105	static gboolean
106	cb_map_gps(GtkButton button, map_context_t context) {
107	pos_t *refpos = get_pos(context->appdata);
108	if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
109	osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
110	refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
111	} else {
112	/* no coordinates given: display the entire world */
113	osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
114	0.0, 0.0, 1);
115	}
116
117	return FALSE;
118	}
119
120	static GtkWidget
121	*map_add_button(int icon, GCallback cb, gpointer data,
122	char *tooltip) {
123	GtkWidget *button = gtk_button_new();
124	gtk_button_set_image(GTK_BUTTON(button), icon_get_widget(ICON_MISC, icon));
125	g_signal_connect(button, "clicked", cb, data);
126	#ifndef USE_MAEMO
127	gtk_widget_set_tooltip_text(button, tooltip);
128	#endif
129	return button;
130	}
131
132	static int dist2pixel(map_context_t *context, float km, float lat) {
133	return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
134	}
135
136	static gboolean map_gps_update(gpointer data) {
137	map_context_t context = (map_context_t)data;
138
139	/* get reference position ... */
140	pos_t *refpos = get_pos(context->appdata);
141	gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
142
143	/* ... and enable "goto" button if it's valid */
144	gtk_widget_set_sensitive(context->gps, ok);
145
146	if(ok) {
147	float heading = NAN;
148	int radius = 0;
149
150	if(context->appdata->use_gps) {
151	heading = gps_get_heading(context->appdata);
152
153	/* get error */
154	float eph = gps_get_eph(context->appdata);
155	if(!isnan(eph))
156	radius = dist2pixel(context, eph/1000, refpos->lat);
157	}
158
159	g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
160	osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
161	refpos->lat, refpos->lon, heading);
162	} else
163	osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
164
165	return TRUE;
166	}
167
168	static gboolean on_map_configure(GtkWidget *widget,
169	GdkEventConfigure *event,
170	map_context_t *context) {
171
172	/* set default values if they are invalid */
173	if(!context->appdata->map.zoom \|\|
174	isnan(context->appdata->map.pos.lat) \|\|
175	isnan(context->appdata->map.pos.lon)) {
176	printf("no valid map position found\n");
177
178	pos_t *refpos = get_pos(context->appdata);
179	if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
180	/* use gps position if present */
181	context->appdata->map.pos = *refpos;
182	context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
183	} else {
184	/* use world map otherwise */
185	context->appdata->map.pos.lat = 0.0;
186	context->appdata->map.pos.lon = 0.0;
187	context->appdata->map.zoom = 1;
188	}
189	}
190
191	/* jump to initial position */
192	osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
193	context->appdata->map.pos.lat,
194	context->appdata->map.pos.lon,
195	context->appdata->map.zoom);
196
197	return FALSE;
198	}
199
200	static void map_draw_cachelist(GtkWidget map, cache_t cache) {
201	while(cache) {
202	GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
203
204	osm_gps_map_add_image(OSM_GPS_MAP(map),
205	cache->pos.lat, cache->pos.lon, icon);
206
207	cache = cache->next;
208	}
209	}
210
211	static void
212	map_cachelist_nearest(cache_t cache, pos_t pos,
213	cache_t *result, float distance) {
214	while(cache) {
215	float dist =
216	pow(cache->pos.lat - pos->lat, 2) +
217	pow(cache->pos.lon - pos->lon, 2);
218
219	if(!(dist > *distance)) {
220	*result = cache;
221	*distance = dist;
222	}
223
224	cache = cache->next;
225	}
226	}
227
228	static cache_t map_closest(map_context_t context, pos_t *pos) {
229	cache_t *result = NULL;
230	float distance = NAN;
231
232	#ifdef USE_MAEMO
233	if(!context->appdata->cur_gpx) {
234	#endif
235	/* search all geocaches */
236	gpx_t *gpx = context->appdata->gpx;
237	while(gpx) {
238	map_cachelist_nearest(gpx->cache, pos, &result, &distance);
239	gpx = gpx->next;
240	}
241	#ifdef USE_MAEMO
242	} else {
243	map_cachelist_nearest(context->appdata->cur_gpx->cache,
244	pos, &result, &distance);
245	}
246	#endif
247
248	return result;
249	}
250
251	/* translate between osm-gps-map positions and gpxview ones */
252	pos_t coord2pos(coord_t coo) {
253	pos_t pos;
254	pos.lat = RAD2DEG(coo.rlat);
255	pos.lon = RAD2DEG(coo.rlon);
256	return pos;
257	}
258
259	#define CLICK_FUZZ (24)
260
261	static gboolean
262	on_map_button_press_event(GtkWidget *widget,
263	GdkEventButton event, map_context_t context) {
264	OsmGpsMap *map = OSM_GPS_MAP(context->widget);
265
266	/* got a press event without release event? eat it! */
267	if(context->press_on != NULL) {
268	printf("PRESS: already\n");
269	return TRUE;
270	}
271
272	pos_t pos =
273	coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
274
275	cache_t *nearest = map_closest(context, &pos);
276	if(nearest) {
277	float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
278	if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
279	context->press_on = nearest;
280	}
281
282	return FALSE;
283	}
284
285	static gboolean
286	on_map_button_release_event(GtkWidget *widget,
287	GdkEventButton event, map_context_t context) {
288	OsmGpsMap *map = OSM_GPS_MAP(context->widget);
289
290	if(context->press_on) {
291	coord_t coo;
292	coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
293
294	pos_t pos =
295	coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
296
297	cache_t *nearest = map_closest(context, &pos);
298	if(nearest && nearest == context->press_on) {
299	float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
300	if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
301
302	osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon);
303	}
304	}
305	context->press_on = NULL;
306	} else {
307	/* save new map position */
308	gfloat lat, lon;
309	g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
310	context->appdata->map.pos.lat = lat;
311	context->appdata->map.pos.lon = lon;
312	}
313
314	return FALSE;
315	}
316
317	static void on_window_destroy(GtkWidget widget, map_context_t context) {
318	appdata_t *appdata = context->appdata;
319
320	printf("destroy map window\n");
321
322	/* save map parameters */
323	OsmGpsMap *map = OSM_GPS_MAP(context->widget);
324	gint zoom;
325	g_object_get(map, "zoom", &zoom, NULL);
326	context->appdata->map.zoom = zoom;
327
328	gfloat lat, lon;
329	g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
330	context->appdata->map.pos.lat = lat;
331	context->appdata->map.pos.lon = lon;
332
333	#if MAEMO_VERSION_MAJOR == 5
334	/* restore cur_view */
335	context->appdata->cur_view = context->old_view;
336	#endif
337
338	gtk_timeout_remove(context->handler_id);
339
340	g_free(context);
341	appdata->map.context = NULL;
342	}
343
344	void map(appdata_t *appdata) {
345	map_context_t *context = NULL;
346
347	/* if the map window already exists, just raise it */
348	if(appdata->map.context) {
349	gtk_window_present(GTK_WINDOW(appdata->map.context->window));
350	return;
351	}
352
353	context = appdata->map.context = g_new0(map_context_t, 1);
354	context->appdata = appdata;
355
356	GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
357
358	char *path = g_strdup_printf("%s/map/", appdata->image_path);
359	const char *proxy = get_proxy_uri(appdata);
360
361	context->widget = g_object_new(OSM_TYPE_GPS_MAP,
362	"map-source", MAP_SOURCE,
363	"tile-cache", path,
364	"auto-center", FALSE,
365	"record-trip-history", FALSE,
366	"show-trip-history", FALSE,
367	proxy?"proxy-uri":NULL, proxy,
368	NULL);
369
370	g_free(path);
371
372	char *name = NULL;
373	#ifdef USE_MAEMO
374	if(!appdata->cur_gpx) {
375	#endif
376	/* draw all geocaches */
377	gpx_t *gpx = appdata->gpx;
378	while(gpx) {
379	map_draw_cachelist(context->widget, gpx->cache);
380	gpx = gpx->next;
381	}
382	name = g_strdup(_("all geocaches"));
383	#ifdef USE_MAEMO
384	} else {
385	map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
386	name = g_strdup(appdata->cur_gpx->name);
387	}
388	#endif
389
390	char *title = g_strdup_printf(_("Map - %s"), name);
391	g_free(name);
392
393	#ifdef USE_MAEMO
394	#ifdef USE_STACKABLE_WINDOW
395	context->window = hildon_stackable_window_new();
396	#else
397	context->window = hildon_window_new();
398	#endif
399	#else
400	context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
401	#endif
402
403	gtk_window_set_title(GTK_WINDOW(context->window), title);
404
405	#ifndef USE_MAEMO
406	gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
407	#endif
408
409	g_free(title);
410
411	g_signal_connect(G_OBJECT(context->widget), "configure-event",
412	G_CALLBACK(on_map_configure), context);
413
414	g_signal_connect(G_OBJECT(context->widget), "button-press-event",
415	G_CALLBACK(on_map_button_press_event), context);
416
417	g_signal_connect(G_OBJECT(context->widget), "button-release-event",
418	G_CALLBACK(on_map_button_release_event), context);
419
420	gtk_box_pack_start_defaults(GTK_BOX(hbox), context->widget);
421	/* zoom button box */
422	GtkWidget *vbox = gtk_vbox_new(FALSE,0);
423
424	context->zoomin =
425	map_add_button(10, G_CALLBACK(cb_map_zoomin),
426	context, _("Zoom in"));
427	gtk_box_pack_start(GTK_BOX(vbox), context->zoomin, FALSE, FALSE, 0);
428
429	context->zoomout =
430	map_add_button(11, G_CALLBACK(cb_map_zoomout),
431	context, _("Zoom out"));
432	gtk_box_pack_start(GTK_BOX(vbox), context->zoomout, FALSE, FALSE, 0);
433
434	context->gps =
435	map_add_button(9, G_CALLBACK(cb_map_gps),
436	context, _("Jump to GPS position"));
437	gtk_widget_set_sensitive(context->gps, FALSE);
438
439	/* install handler for timed updates of the gps button */
440	context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
441	gtk_box_pack_start(GTK_BOX(vbox), context->gps, FALSE, FALSE, 0);
442
443	gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0);
444
445	#if MAEMO_VERSION_MAJOR == 5
446	/* prevent some of the main screen things */
447	context->old_view = appdata->cur_view;
448	appdata->cur_view = NULL;
449	#endif
450
451	g_signal_connect(G_OBJECT(context->window), "destroy",
452	G_CALLBACK(on_window_destroy), context);
453
454	gtk_container_add(GTK_CONTAINER(context->window), hbox);
455	gtk_widget_show_all(GTK_WIDGET(context->window));
456	}