Emit an event (ui_draw) immediately before drawing the screen

This allows better control over styling, as well as potential for
entirely new UI elements implemented entirely using the Lua API.

1 files changed, 1 insertions, 0 deletions

diff --git a/vis.h b/vis.h
index b67d3c5..8287a45 100644
--- a/vis.h
+++ b/vis.h
@@ -58,6 +58,7 @@ typedef struct {
 	void (*win_highlight)(Vis*, Win*);
 	void (*win_status)(Vis*, Win*);
 	void (*term_csi)(Vis*, const long *);
+	void (*ui_draw)(Vis*);
 } VisEvent;
 
 /** Union used to pass arguments to key action functions. */