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Invalid positions marked by NANs
1 | /* |
2 | * Copyright (C) 2008 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 | typedef struct { |
28 | appdata_t *appdata; |
29 | GtkWidget *widget; |
30 | GtkWidget *zoomin, *zoomout, *gps; |
31 | gint handler_id; |
32 | } map_context_t; |
33 | |
34 | #define PROXY_KEY "/system/http_proxy/" |
35 | |
36 | static const char *get_proxy_uri(appdata_t *appdata) { |
37 | static char proxy_buffer[64] = ""; |
38 | |
39 | /* use environment settings if preset */ |
40 | const char *proxy = g_getenv("http_proxy"); |
41 | if(proxy) { |
42 | printf("http_proxy: %s\n", proxy); |
43 | return proxy; |
44 | } |
45 | |
46 | /* ------------- get proxy settings -------------------- */ |
47 | if(gconf_client_get_bool(appdata->gconf_client, |
48 | PROXY_KEY "use_http_proxy", NULL)) { |
49 | |
50 | /* we can savely ignore things like "ignore_hosts" since we */ |
51 | /* are pretty sure not inside the net of one of our map renderers */ |
52 | /* (unless the user works at google :-) */ |
53 | |
54 | /* get basic settings */ |
55 | char *host = |
56 | gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL); |
57 | if(host) { |
58 | int port = |
59 | gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL); |
60 | |
61 | snprintf(proxy_buffer, sizeof(proxy_buffer), |
62 | "http://%s:%u", host, port); |
63 | |
64 | g_free(host); |
65 | } |
66 | } |
67 | |
68 | return proxy_buffer; |
69 | } |
70 | |
71 | static void map_zoom(map_context_t *context, int step) { |
72 | int zoom; |
73 | OsmGpsMap *map = OSM_GPS_MAP(context->widget); |
74 | g_object_get(map, "zoom", &zoom, NULL); |
75 | zoom = osm_gps_map_set_zoom(map, zoom+step); |
76 | |
77 | /* enable/disable zoom buttons as required */ |
78 | gtk_widget_set_sensitive(context->zoomin, zoom<17); |
79 | gtk_widget_set_sensitive(context->zoomout, zoom>1); |
80 | } |
81 | |
82 | static gboolean |
83 | cb_map_zoomin(GtkButton *button, map_context_t *context) { |
84 | map_zoom(context, +1); |
85 | return FALSE; |
86 | } |
87 | |
88 | static gboolean |
89 | cb_map_zoomout(GtkButton *button, map_context_t *context) { |
90 | map_zoom(context, -1); |
91 | return FALSE; |
92 | } |
93 | |
94 | #define DEG2RAD(a) ((a) * M_PI / 180.0) |
95 | |
96 | static gboolean |
97 | cb_map_gps(GtkButton *button, map_context_t *context) { |
98 | pos_t *refpos = get_pos(context->appdata); |
99 | if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) { |
100 | printf("pos is %f %f\n", refpos->lat, refpos->lon); |
101 | |
102 | osm_gps_map_set_center(OSM_GPS_MAP(context->widget), |
103 | DEG2RAD(refpos->lat), DEG2RAD(refpos->lon)); |
104 | } |
105 | |
106 | return FALSE; |
107 | } |
108 | |
109 | static GtkWidget |
110 | *map_add_button(const gchar *icon, GCallback cb, gpointer data, |
111 | char *tooltip) { |
112 | GtkWidget *button = gtk_button_new(); |
113 | gtk_button_set_image(GTK_BUTTON(button), |
114 | gtk_image_new_from_stock(icon, GTK_ICON_SIZE_MENU)); |
115 | g_signal_connect(button, "clicked", cb, data); |
116 | #ifndef USE_MAEMO |
117 | gtk_widget_set_tooltip_text(button, tooltip); |
118 | #endif |
119 | return button; |
120 | } |
121 | |
122 | static gboolean map_gps_update(gpointer data) { |
123 | map_context_t *context = (map_context_t*)data; |
124 | |
125 | pos_t *refpos = get_pos(context->appdata); |
126 | gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon); |
127 | |
128 | /* get reference position and go there */ |
129 | gtk_widget_set_sensitive(context->gps, ok); |
130 | |
131 | return TRUE; |
132 | } |
133 | |
134 | |
135 | void map(appdata_t *appdata) { |
136 | map_context_t context; |
137 | context.appdata = appdata; |
138 | |
139 | GtkWidget *dialog = gtk_dialog_new_with_buttons(_("Map"), |
140 | GTK_WINDOW(appdata->window), |
141 | GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, |
142 | GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE, |
143 | NULL); |
144 | |
145 | #ifndef USE_MAEMO |
146 | gtk_window_set_default_size(GTK_WINDOW(dialog), 400, 350); |
147 | #else |
148 | gtk_window_set_default_size(GTK_WINDOW(dialog), 800, 480); |
149 | #endif |
150 | |
151 | GtkWidget *hbox = gtk_hbox_new(FALSE, 0); |
152 | |
153 | char *path = g_strdup_printf("%s/map/", appdata->image_path); |
154 | |
155 | context.widget = g_object_new(OSM_TYPE_GPS_MAP, |
156 | "repo-uri", MAP_SOURCE_OPENSTREETMAP, |
157 | "proxy-uri", get_proxy_uri(appdata), |
158 | "tile-cache", path, |
159 | NULL); |
160 | |
161 | g_free(path); |
162 | |
163 | #if 0 |
164 | g_signal_connect(G_OBJECT(context.widget), "button-release-event", |
165 | G_CALLBACK(on_map_button_release_event), &context); |
166 | #endif |
167 | |
168 | gtk_box_pack_start_defaults(GTK_BOX(hbox), context.widget); |
169 | /* zoom button box */ |
170 | GtkWidget *vbox = gtk_vbox_new(FALSE,0); |
171 | |
172 | context.zoomin = |
173 | map_add_button(GTK_STOCK_ZOOM_IN, G_CALLBACK(cb_map_zoomin), |
174 | &context, _("Zoom in")); |
175 | gtk_box_pack_start(GTK_BOX(vbox), context.zoomin, FALSE, FALSE, 0); |
176 | |
177 | context.zoomout = |
178 | map_add_button(GTK_STOCK_ZOOM_OUT, G_CALLBACK(cb_map_zoomout), |
179 | &context, _("Zoom out")); |
180 | gtk_box_pack_start(GTK_BOX(vbox), context.zoomout, FALSE, FALSE, 0); |
181 | |
182 | context.gps = |
183 | map_add_button(GTK_STOCK_HOME, G_CALLBACK(cb_map_gps), |
184 | &context, _("Jump to GPS position")); |
185 | gtk_widget_set_sensitive(context.gps, FALSE); |
186 | /* install handler for timed updates of the gps button */ |
187 | context.handler_id = gtk_timeout_add(1000, map_gps_update, &context); |
188 | gtk_box_pack_start(GTK_BOX(vbox), context.gps, FALSE, FALSE, 0); |
189 | |
190 | gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0); |
191 | |
192 | gtk_box_pack_start_defaults(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox); |
193 | |
194 | gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_CLOSE); |
195 | |
196 | gtk_widget_show_all(dialog); |
197 | |
198 | gtk_dialog_run(GTK_DIALOG(dialog)); |
199 | |
200 | gtk_widget_destroy(dialog); |
201 | |
202 | } |