X-Git-Url: https://git.street.me.uk/andy/viking.git/blobdiff_plain/17281ebdbd8ec39f0a10450de309b9966cbc6351..5f95559592dfdbf92b2fc0d39906329facf1729e:/src/vikmapsource.c

diff --git a/src/vikmapsource.c b/src/vikmapsource.c
index b5470f42..217a619c 100644
--- a/src/vikmapsource.c
+++ b/src/vikmapsource.c
@@ -70,6 +70,7 @@ vik_map_source_class_init (VikMapSourceClass *klass)
 	klass->get_tilesize_x = NULL;
 	klass->get_tilesize_y = NULL;
 	klass->get_drawmode = NULL;
+	klass->is_direct_file_access = NULL;
 	klass->supports_download_only_new = _supports_download_only_new;
 	klass->coord_to_mapcoord = NULL;
 	klass->mapcoord_to_center_coord = NULL;
@@ -214,6 +215,26 @@ vik_map_source_get_drawmode (VikMapSource *self)
 	return (*klass->get_drawmode)(self);
 }
 
+/**
+ * vik_map_source_is_direct_file_access:
+ * @self: the VikMapSource of interest.
+ *
+ *   Return true when we can bypass all this download malarky
+ *   Treat the files as a pre generated data set in OSM tile server layout: <tiledir>/%d/%d/%d.png
+ */
+gboolean
+vik_map_source_is_direct_file_access (VikMapSource * self)
+{
+	VikMapSourceClass *klass;
+	g_return_val_if_fail (self != NULL, 0);
+	g_return_val_if_fail (VIK_IS_MAP_SOURCE (self), 0);
+	klass = VIK_MAP_SOURCE_GET_CLASS(self);
+
+	g_return_val_if_fail (klass->is_direct_file_access != NULL, 0);
+
+	return (*klass->is_direct_file_access)(self);
+}
+
 gboolean
 vik_map_source_supports_download_only_new (VikMapSource * self)
 {