From 2cb23d03efb432ba67bd2b8ccc9e59b3e69c59a2 Mon Sep 17 00:00:00 2001
From: Joshua Leung <aligorith@gmail.com>
Date: Wed, 27 Jan 2010 10:43:14 +0000
Subject: [PATCH] Bugfix #20752: Background Image Panel Properties Keyframing?

Added a check in RNA_property_animateable() which checks if the base ID-block can have animation data or not. Screen data currently cannot have animation data, so this solves that problem (where there were non-functional entries there in the menu).
---
 source/blender/blenkernel/BKE_animsys.h     |  5 ++++-
 source/blender/blenkernel/intern/anim_sys.c | 10 +++++-----
 source/blender/makesrna/intern/rna_access.c |  5 +++++
 3 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/source/blender/blenkernel/BKE_animsys.h b/source/blender/blenkernel/BKE_animsys.h
index ad89d3bbd53..a36845b38a2 100644
--- a/source/blender/blenkernel/BKE_animsys.h
+++ b/source/blender/blenkernel/BKE_animsys.h
@@ -43,7 +43,10 @@ struct AnimMapper;
 /* ************************************* */
 /* AnimData API */
 
-/* Get AnimData from the given ID-block. */
+/* Check if the given ID-block can have AnimData */
+short id_type_can_have_animdata(struct ID *id);
+
+/* Get AnimData from the given ID-block */
 struct AnimData *BKE_animdata_from_id(struct ID *id);
 
 /* Add AnimData to the given ID-block */
diff --git a/source/blender/blenkernel/intern/anim_sys.c b/source/blender/blenkernel/intern/anim_sys.c
index c617ca33e8a..e6a429e4b5f 100644
--- a/source/blender/blenkernel/intern/anim_sys.c
+++ b/source/blender/blenkernel/intern/anim_sys.c
@@ -60,8 +60,8 @@
 
 /* Getter/Setter -------------------------------------------- */
 
-/* Internal utility to check if ID can have AnimData */
-static short id_has_animdata (ID *id)
+/* Check if ID can have AnimData */
+short id_type_can_have_animdata (ID *id)
 {
 	/* sanity check */
 	if (id == NULL)
@@ -99,7 +99,7 @@ AnimData *BKE_animdata_from_id (ID *id)
 	 * types that do to be of type IdAdtTemplate, and extract the
 	 * AnimData that way
 	 */
-	if (id_has_animdata(id)) {
+	if (id_type_can_have_animdata(id)) {
 		IdAdtTemplate *iat= (IdAdtTemplate *)id;
 		return iat->adt;
 	}
@@ -117,7 +117,7 @@ AnimData *BKE_id_add_animdata (ID *id)
 	 * types that do to be of type IdAdtTemplate, and add the AnimData
 	 * to it using the template
 	 */
-	if (id_has_animdata(id)) {
+	if (id_type_can_have_animdata(id)) {
 		IdAdtTemplate *iat= (IdAdtTemplate *)id;
 		
 		/* check if there's already AnimData, in which case, don't add */
@@ -145,7 +145,7 @@ void BKE_free_animdata (ID *id)
 	/* Only some ID-blocks have this info for now, so we cast the 
 	 * types that do to be of type IdAdtTemplate
 	 */
-	if (id_has_animdata(id)) {
+	if (id_type_can_have_animdata(id)) {
 		IdAdtTemplate *iat= (IdAdtTemplate *)id;
 		AnimData *adt= iat->adt;
 		
diff --git a/source/blender/makesrna/intern/rna_access.c b/source/blender/makesrna/intern/rna_access.c
index cb3911b6423..d7517f6661c 100644
--- a/source/blender/makesrna/intern/rna_access.c
+++ b/source/blender/makesrna/intern/rna_access.c
@@ -36,6 +36,7 @@
 #include "BLI_dynstr.h"
 #include "BLI_ghash.h"
 
+#include "BKE_animsys.h"
 #include "BKE_context.h"
 #include "BKE_idprop.h"
 #include "BKE_main.h"
@@ -1110,6 +1111,10 @@ int RNA_property_editable_index(PointerRNA *ptr, PropertyRNA *prop, int index)
 
 int RNA_property_animateable(PointerRNA *ptr, PropertyRNA *prop)
 {
+	/* check that base ID-block can support animation data */
+	if (!id_type_can_have_animdata(ptr->id.data))
+		return 0;
+	
 	prop= rna_ensure_property(prop);
 
 	if(!(prop->flag & PROP_ANIMATEABLE))