Drivers UI: Add the "Update Dependencies" logic into the callbacks that should be run on every button press

In theory, this should mean that we can get rid of the "Update Dependencies"
button. In practice, there may still be cases where it's still needed
(as somehow, it did end up being needed in the past, even though the RNA
calls should in theory be doing everything needed already).

1 files changed, 11 insertions, 1 deletions

diff --git a/source/blender/editors/space_graph/graph_buttons.c b/source/blender/editors/space_graph/graph_buttons.c
index 3f5cbd166c2..aae370457b7 100644
--- a/source/blender/editors/space_graph/graph_buttons.c
+++ b/source/blender/editors/space_graph/graph_buttons.c
@@ -467,7 +467,7 @@ static void graph_panel_key_properties(const bContext *C, Panel *pa)
 
 #define B_IPO_DEPCHANGE     10
 
-static void do_graph_region_driver_buttons(bContext *C, void *UNUSED(arg), int event)
+static void do_graph_region_driver_buttons(bContext *C, void *fcu_v, int event)
 {
 	Main *bmain = CTX_data_main(C);
 	Scene *scene = CTX_data_scene(C);
@@ -475,6 +475,16 @@ static void do_graph_region_driver_buttons(bContext *C, void *UNUSED(arg), int e
 	switch (event) {
 		case B_IPO_DEPCHANGE:
 		{
+			/* force F-Curve & Driver to get re-evaluated (same as the old Update Dependencies) */
+			FCurve *fcu = (FCurve *)fcu_v;
+			ChannelDriver *driver = (fcu) ? fcu->driver : NULL;
+			
+			/* clear invalid flags */
+			if (fcu) {
+				fcu->flag &= ~FCURVE_DISABLED;
+				driver->flag &= ~DRIVER_FLAG_INVALID;
+			}
+			
 			/* rebuild depsgraph for the new deps */
 			DEG_relations_tag_update(bmain);
 			break;