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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_grab_remove(widget);
gtk_widget_destroy(widget);
*window = NULL;
}
struct maplocation {
OsmGpsMap *map;
double x,y;
void (* callback)(float, float);
GtkWidget *mapwindow;
};
static void add_location_cb(GtkWidget *widget, gpointer data)
{
struct maplocation *maplocation = data;
OsmGpsMap *map = maplocation->map;
OsmGpsMapPoint *pt = osm_gps_map_point_new_degrees(0.0, 0.0);
float mark_lat, mark_lon;
osm_gps_map_convert_screen_to_geographic(map, maplocation->x, maplocation->y, pt);
osm_gps_map_point_get_degrees(pt, &mark_lat, &mark_lon);
maplocation->callback(mark_lat, mark_lon);
gtk_widget_destroy(gtk_widget_get_parent(maplocation->mapwindow));
}
static void map_popup_menu_cb(GtkWidget *w, gpointer data)
{
GtkWidget *menu, *menuitem, *image;
menu = gtk_menu_new();
menuitem = gtk_image_menu_item_new_with_label(_("Mark location here"));
image = gtk_image_new_from_stock(GTK_STOCK_ADD, GTK_ICON_SIZE_MENU);
gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(menuitem), image);
g_signal_connect(menuitem, "activate", G_CALLBACK(add_location_cb), data);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), menuitem);
gtk_widget_show_all(menu);
gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL,
3, gtk_get_current_event_time());
}
static gboolean button_cb(GtkWidget *widget, GdkEventButton *event, gpointer data)
{
static struct maplocation maplocation = {};
if (data && event->type == GDK_BUTTON_PRESS && event->button == 3) {
maplocation.map = (OsmGpsMap *)widget;
maplocation.x = event->x;
maplocation.y = event->y;
maplocation.callback = data;
maplocation.mapwindow = widget;
map_popup_menu_cb(widget, &maplocation);
}
return FALSE;
}
/* 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);
}
static void key_press_event(GtkWidget *window, GdkEventKey *event, gpointer data)
{
if ((event->string != NULL && event->keyval == GDK_Escape) ||
(event->string != NULL && event->keyval == GDK_w && event->state & GDK_CONTROL_MASK)) {
gtk_widget_destroy(window);
}
}
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, struct dive *dive, void (*callback)(float, float))
{
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), 560, 360);
gtk_window_set_title(GTK_WINDOW(*window), _("Dive 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));
gtk_window_set_transient_for(GTK_WINDOW(*window), GTK_WINDOW(main_window));
gtk_window_set_modal(GTK_WINDOW(*window), TRUE);
g_signal_connect(*window, "destroy", G_CALLBACK(on_close), (gpointer)window);
g_signal_connect(G_OBJECT(map), "scroll-event", G_CALLBACK(scroll_cb), NULL);
g_signal_connect(*window, "key_press_event", G_CALLBACK (key_press_event), NULL);
}
if (callback)
g_signal_connect(G_OBJECT(map), "button-press-event", G_CALLBACK(button_cb), callback);
gtk_widget_show_all(*window);
if (callback)
gtk_grab_add(*window);
}
void show_gps_location(struct dive *dive, void (*callback)(float, float))
{
static GtkWidget *window = NULL;
static OsmGpsMap *map = NULL;
GdkPixbuf *picture;
GError *gerror = NULL;
double lat = dive->latitude.udeg / 1000000.0;
double lng = dive->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, 9);
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, 1);
}
show_map(map, &window, dive, callback);
}
void show_gps_locations()
{
static OsmGpsMap *map = NULL;
static GtkWidget *window = NULL;
struct dive *dive;
int idx;
if (!window || !map)
map = init_map();
for_each_dive(idx, dive) {
if (dive_has_gps_location(dive)) {
add_gps_point(map, dive->latitude.udeg / 1000000.0,
dive->longitude.udeg / 1000000.0);
}
}
osm_gps_map_set_center_and_zoom(map, 0, 0, 1);
show_map(map, &window, NULL, NULL);
}
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