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

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Revision 34 - (show annotations)
Wed Jul 29 19:24:15 2009 UTC (14 years, 9 months ago) by harbaum
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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 }