bge: wdgt: add inline GskPath construction support

Author: kolunmi

bge/bge-marshalers.list

@@ -39,6 +39,7 @@ DOUBLE:DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE
 BOXED:DOUBLE,DOUBLE
 BOXED:DOUBLE,DOUBLE,DOUBLE
 BOXED:DOUBLE,DOUBLE,DOUBLE,DOUBLE
+BOXED:DOUBLE,ENUM,ENUM,DOUBLE
 
 INT:DOUBLE
 OBJECT:DOUBLE

bge/wdgt/bge-wdgt-spec-private.h

@@ -72,6 +72,15 @@ bge_wdgt_spec_add_transform_source_value (BgeWdgtSpec       *self,
                                           guint              n_args,
                                           GError           **error);
 
+gboolean
+bge_wdgt_spec_add_path_source_value (BgeWdgtSpec              *self,
+                                     const char               *name,
+                                     const char *const        *instructions,
+                                     const char *const *const *argss,
+                                     const guint              *n_argss,
+                                     guint                     n_args,
+                                     GError                  **error);
+
 gboolean
 bge_wdgt_spec_add_instance_source_value (BgeWdgtSpec *self,
                                          const char  *name,