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	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	34	#include <math.h> // for isnan
22	harbaum	33
23			#ifdef ENABLE_OSM_GPS_MAP
24			#include "osm-gps-map.h"
25			#endif
26
27	harbaum	55	#define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP
28	harbaum	48	#define GPS_DEFAULT_ZOOM 13
29
30	harbaum	42	/* 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	harbaum	34	#define PROXY_KEY "/system/http_proxy/"
37
38			static const char get_proxy_uri(appdata_t appdata) {
39			static char proxy_buffer[64] = "";
40	harbaum	33
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	harbaum	34	/* ------------- get proxy settings -------------------- */
49			if(gconf_client_get_bool(appdata->gconf_client,
50			PROXY_KEY "use_http_proxy", NULL)) {
51	harbaum	33
52	harbaum	34	/* 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	harbaum	33
63	harbaum	34	snprintf(proxy_buffer, sizeof(proxy_buffer),
64			"http://%s:%u", host, port);
65	harbaum	33
66	harbaum	34	g_free(host);
67			}
68	harbaum	35	return proxy_buffer;
69	harbaum	34	}
70
71	harbaum	35	return NULL;
72	harbaum	33	}
73
74			static void map_zoom(map_context_t *context, int step) {
75	harbaum	48	gint zoom;
76	harbaum	33	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	harbaum	55	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	harbaum	48
86	harbaum	56	/* hmm ... this doesn't really work */
87			osm_gps_map_osd_speed(map, zoom);
88
89	harbaum	48	/* save new zoom */
90			context->appdata->map.zoom = zoom;
91	harbaum	33	}
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	harbaum	34	pos_t *refpos = get_pos(context->appdata);
108			if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
109	harbaum	35	osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
110	harbaum	48	refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
111	harbaum	35	} 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	harbaum	34	}
116	harbaum	33
117			return FALSE;
118			}
119
120			static GtkWidget
121	harbaum	51	*map_add_button(int icon, GCallback cb, gpointer data,
122	harbaum	33	char *tooltip) {
123			GtkWidget *button = gtk_button_new();
124	harbaum	51	gtk_button_set_image(GTK_BUTTON(button), icon_get_widget(ICON_MISC, icon));
125	harbaum	33	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	harbaum	55	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	harbaum	33	static gboolean map_gps_update(gpointer data) {
137			map_context_t context = (map_context_t)data;
138
139	harbaum	51	/* get reference position ... */
140	harbaum	34	pos_t *refpos = get_pos(context->appdata);
141			gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
142	harbaum	33
143	harbaum	51	/* ... and enable "goto" button if it's valid */
144	harbaum	34	gtk_widget_set_sensitive(context->gps, ok);
145
146	harbaum	51	if(ok) {
147	harbaum	53	float heading = NAN;
148	harbaum	54	int radius = 0;
149	harbaum	51
150	harbaum	53	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	harbaum	55	if(!isnan(eph))
156			radius = dist2pixel(context, eph/1000, refpos->lat);
157	harbaum	53	}
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	harbaum	51	refpos->lat, refpos->lon, heading);
162			} else
163			osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
164
165	harbaum	33	return TRUE;
166			}
167
168	harbaum	35	static gboolean on_map_configure(GtkWidget *widget,
169			GdkEventConfigure *event,
170			map_context_t *context) {
171	harbaum	33
172	harbaum	48	/* 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	harbaum	35
191	harbaum	48	/* 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	harbaum	35	return FALSE;
198			}
199
200	harbaum	38	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	harbaum	41	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	harbaum	47	#define CLICK_FUZZ (24)
260	harbaum	42
261	harbaum	41	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	harbaum	44	/* 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	harbaum	41	pos_t pos =
273	harbaum	42	coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
274	harbaum	41
275	harbaum	42	cache_t *nearest = map_closest(context, &pos);
276			if(nearest) {
277			float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
278	harbaum	44	if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
279	harbaum	42	context->press_on = nearest;
280			}
281	harbaum	44
282	harbaum	41	return FALSE;
283			}
284
285			static gboolean
286			on_map_button_release_event(GtkWidget *widget,
287			GdkEventButton event, map_context_t context) {
288	harbaum	48	OsmGpsMap *map = OSM_GPS_MAP(context->widget);
289
290	harbaum	42	if(context->press_on) {
291	harbaum	57	coord_t coo;
292			coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
293
294	harbaum	42	pos_t pos =
295			coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
296	harbaum	41
297	harbaum	42	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	harbaum	57	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	harbaum	42	}
305	harbaum	44	context->press_on = NULL;
306	harbaum	48	} 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	harbaum	41	}
313
314			return FALSE;
315			}
316
317	harbaum	56	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	harbaum	48	/* 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	harbaum	44
328	harbaum	48	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	harbaum	40	#if MAEMO_VERSION_MAJOR == 5
334			/* restore cur_view */
335			context->appdata->cur_view = context->old_view;
336	harbaum	56	#endif
337	harbaum	40
338			gtk_timeout_remove(context->handler_id);
339	harbaum	56
340	harbaum	40	g_free(context);
341	harbaum	56	appdata->map.context = NULL;
342	harbaum	40	}
343
344	harbaum	33	void map(appdata_t *appdata) {
345	harbaum	56	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	harbaum	40	context->appdata = appdata;
355	harbaum	33
356	harbaum	41	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	harbaum	55	"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	harbaum	41	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	harbaum	44	name = g_strdup(appdata->cur_gpx->name);
387	harbaum	41	}
388			#endif
389
390			char *title = g_strdup_printf(_("Map - %s"), name);
391			g_free(name);
392
393	harbaum	56	#ifdef USE_MAEMO
394			#ifdef USE_STACKABLE_WINDOW
395			context->window = hildon_stackable_window_new();
396	harbaum	40	#else
397	harbaum	56	context->window = hildon_window_new();
398			#endif
399			#else
400			context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
401			#endif
402	harbaum	33
403	harbaum	56	gtk_window_set_title(GTK_WINDOW(context->window), title);
404
405	harbaum	33	#ifndef USE_MAEMO
406	harbaum	56	gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
407	harbaum	33	#endif
408
409	harbaum	41	g_free(title);
410	harbaum	33
411	harbaum	41	g_signal_connect(G_OBJECT(context->widget), "configure-event",
412			G_CALLBACK(on_map_configure), context);
413	harbaum	33
414	harbaum	41	g_signal_connect(G_OBJECT(context->widget), "button-press-event",
415			G_CALLBACK(on_map_button_press_event), context);
416	harbaum	33
417	harbaum	40	g_signal_connect(G_OBJECT(context->widget), "button-release-event",
418			G_CALLBACK(on_map_button_release_event), context);
419	harbaum	33
420	harbaum	40	gtk_box_pack_start_defaults(GTK_BOX(hbox), context->widget);
421	harbaum	33	/* zoom button box */
422			GtkWidget *vbox = gtk_vbox_new(FALSE,0);
423
424	harbaum	40	context->zoomin =
425	harbaum	51	map_add_button(10, G_CALLBACK(cb_map_zoomin),
426	harbaum	40	context, _("Zoom in"));
427			gtk_box_pack_start(GTK_BOX(vbox), context->zoomin, FALSE, FALSE, 0);
428	harbaum	33
429	harbaum	40	context->zoomout =
430	harbaum	51	map_add_button(11, G_CALLBACK(cb_map_zoomout),
431	harbaum	40	context, _("Zoom out"));
432			gtk_box_pack_start(GTK_BOX(vbox), context->zoomout, FALSE, FALSE, 0);
433	harbaum	33
434	harbaum	40	context->gps =
435	harbaum	51	map_add_button(9, G_CALLBACK(cb_map_gps),
436	harbaum	40	context, _("Jump to GPS position"));
437			gtk_widget_set_sensitive(context->gps, FALSE);
438	harbaum	56
439	harbaum	33	/* install handler for timed updates of the gps button */
440	harbaum	40	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	harbaum	33
443			gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0);
444
445	harbaum	40	#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	harbaum	56	#endif
450	harbaum	40
451	harbaum	56	g_signal_connect(G_OBJECT(context->window), "destroy",
452	harbaum	40	G_CALLBACK(on_window_destroy), context);
453
454	harbaum	56	gtk_container_add(GTK_CONTAINER(context->window), hbox);
455			gtk_widget_show_all(GTK_WIDGET(context->window));
456	harbaum	33	}