diff options
| -rw-r--r-- | gps.c | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -24,6 +24,20 @@ static void on_close (GtkWidget *widget, gpointer user_data) *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; + if (event->direction == GDK_SCROLL_UP) + osm_gps_map_zoom_in(map); + else if (event->direction == GDK_SCROLL_DOWN) + osm_gps_map_zoom_out(map); + /* 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 (); @@ -82,6 +96,7 @@ void show_map(OsmGpsMap *map, GtkWidget **window) GTK_WINDOW(*window)->allow_shrink = 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)); |