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/* gps.c */
/* Creates the UI displaying the dives locations on a map.
*/
#include <glib/gi18n.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "osm-gps-map.h"
#include "dive.h"
#include "display.h"
#include "display-gtk.h"
#include "divelist.h"
/* Several map providers are available, such as OSM_GPS_MAP_SOURCE_OPENSTREETMAP
and OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_SATELLITE. We should make more of
them available from e.g. a pull-down menu */
static OsmGpsMapSource_t opt_map_provider = OSM_GPS_MAP_SOURCE_GOOGLE_STREET;
static void on_close(GtkWidget *widget, gpointer user_data)
{
GtkWidget **window = user_data;
gtk_widget_destroy(widget);
*window = NULL;
}
/* the osm gps map default is to scroll-and-recenter around the mouse position
* that is BAT SHIT CRAZY.
* So let's do our own scroll handling instead */
static gboolean scroll_cb(GtkWidget *widget, GdkEventScroll *event, gpointer data)
{
OsmGpsMap *map = (OsmGpsMap *)widget;
OsmGpsMapPoint *pt, *lt, *rb, *target;
float target_lat, target_lon;
gint ltx, lty, rbx, rby, target_x, target_y;
gint zoom, max_zoom, min_zoom;
g_object_get(widget, "max-zoom", &max_zoom, "zoom", &zoom, "min-zoom", &min_zoom, NULL);
pt = osm_gps_map_point_new_degrees(0.0, 0.0);
lt = osm_gps_map_point_new_degrees(0.0, 0.0);
rb = osm_gps_map_point_new_degrees(0.0, 0.0);
target = osm_gps_map_point_new_degrees(0.0, 0.0);
osm_gps_map_convert_screen_to_geographic(map, event->x, event->y, pt);
osm_gps_map_get_bbox(map, lt, rb);
osm_gps_map_convert_geographic_to_screen(map, lt, <x, <y);
osm_gps_map_convert_geographic_to_screen(map, rb, &rbx, &rby);
if (event->direction == GDK_SCROLL_UP) {
if (zoom == max_zoom)
return TRUE;
target_x = event->x + ((ltx + rbx) / 2.0 - (gint)(event->x)) / 2;
target_y = event->y + ((lty + rby) / 2.0 - (gint)(event->y)) / 2;
osm_gps_map_convert_screen_to_geographic(map, target_x, target_y, target);
osm_gps_map_point_get_degrees(target, &target_lat, &target_lon);
osm_gps_map_zoom_in(map);
osm_gps_map_set_center(map, target_lat, target_lon);
} else if (event->direction == GDK_SCROLL_DOWN) {
if(zoom == min_zoom)
return TRUE;
target_x = event->x + ((ltx + rbx) / 2.0 - (gint)(event->x)) * 2;
target_y = event->y + ((lty + rby) / 2.0 - (gint)(event->y)) * 2;
osm_gps_map_convert_screen_to_geographic(map, target_x, target_y, target);
osm_gps_map_point_get_degrees(target, &target_lat, &target_lon);
osm_gps_map_zoom_out(map);
osm_gps_map_set_center(map, target_lat, target_lon);
}
/* don't allow the insane default handler to get its hands on this event */
return TRUE;
}
static void add_gps_point(OsmGpsMap *map, float latitude, float longitude)
{
OsmGpsMapTrack * track = osm_gps_map_track_new();
OsmGpsMapPoint * point = osm_gps_map_point_new_degrees(latitude, longitude);
osm_gps_map_track_add_point(track, point);
osm_gps_map_track_add(map, track);
}
OsmGpsMap *init_map(void)
{
OsmGpsMap *map;
OsmGpsMapLayer *osd;
char *cachedir, *cachebasedir;
cachebasedir = osm_gps_map_get_default_cache_directory();
cachedir = g_strdup(OSM_GPS_MAP_CACHE_AUTO);
map = g_object_new(OSM_TYPE_GPS_MAP,
"map-source", opt_map_provider,
"tile-cache", cachedir,
"tile-cache-base", cachebasedir,
"proxy-uri", g_getenv("http_proxy"),
NULL);
osd = g_object_new(OSM_TYPE_GPS_MAP_OSD,
"show-scale", TRUE,
"show-coordinates", TRUE,
"show-crosshair", TRUE,
"show-dpad", TRUE,
"show-zoom", TRUE,
"show-gps-in-dpad", TRUE,
"show-gps-in-zoom", FALSE,
"dpad-radius", 30,
NULL);
osm_gps_map_layer_add(OSM_GPS_MAP(map), osd);
g_object_unref(G_OBJECT(osd));
return map;
}
void show_map(OsmGpsMap *map, GtkWidget **window)
{
if (!*window) {
/* Enable keyboard navigation */
osm_gps_map_set_keyboard_shortcut(map, OSM_GPS_MAP_KEY_FULLSCREEN, GDK_F11);
osm_gps_map_set_keyboard_shortcut(map, OSM_GPS_MAP_KEY_UP, GDK_Up);
osm_gps_map_set_keyboard_shortcut(map, OSM_GPS_MAP_KEY_DOWN, GDK_Down);
osm_gps_map_set_keyboard_shortcut(map, OSM_GPS_MAP_KEY_LEFT, GDK_Left);
osm_gps_map_set_keyboard_shortcut(map, OSM_GPS_MAP_KEY_RIGHT, GDK_Right);
*window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_position(GTK_WINDOW(*window), GTK_WIN_POS_MOUSE);
gtk_window_set_default_size(GTK_WINDOW(*window), 640, 480);
gtk_window_set_title(GTK_WINDOW(*window), _("Dives locations"));
gtk_container_set_border_width(GTK_CONTAINER(*window), 5);
gtk_window_set_resizable(GTK_WINDOW(*window), TRUE);
gtk_container_add(GTK_CONTAINER(*window), GTK_WIDGET(map));
g_signal_connect(*window, "destroy", G_CALLBACK(on_close), (gpointer)window);
g_signal_connect(G_OBJECT(map), "scroll-event", G_CALLBACK(scroll_cb), NULL);
}
gtk_widget_show_all(*window);
gtk_window_present(GTK_WINDOW(*window));
}
void show_gps_location(struct dive *dp)
{
static GtkWidget *window = NULL;
static OsmGpsMap *map = NULL;
GdkPixbuf *picture;
GError *gerror = NULL;
double lat = dp->latitude.udeg / 1000000.0;
double lng = dp->longitude.udeg / 1000000.0;
if (!map || !window)
map = init_map();
if (lat != 0 || lng != 0) {
add_gps_point(map, lat, lng);
osm_gps_map_set_center_and_zoom(map, lat, lng, 8);
picture = gdk_pixbuf_new_from_file("./flag.png", &gerror);
if (picture) {
osm_gps_map_image_add_with_alignment(map, lat, lng, picture, 0, 1);
} else {
printf("error message: %s\n", gerror->message);
}
} else {
osm_gps_map_set_center_and_zoom(map, 0, 0, 2);
}
show_map(map, &window);
}
void show_gps_locations()
{
static OsmGpsMap *map = NULL;
static GtkWidget *window = NULL;
struct dive *dp;
int idx;
if (!window || !map)
map = init_map();
for_each_dive(idx, dp) {
if (dive_has_location(dp)) {
add_gps_point(map, dp->latitude.udeg / 1000000.0,
dp->longitude.udeg / 1000000.0);
}
}
osm_gps_map_set_center_and_zoom(map, 0, 0, 2);
show_map(map, &window);
}
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