This patch adds support in bpy.props for getter/setter callback functions. We already have update callbacks, but generic get/set functions can come in handy in some cases where the functionality is too complex to use a single value.

The current C callback functions are too simple allow a straightforward implementation, in particular they don't receive the PropertyRNA pointer itself as an argument, which means the callback cannot directly access the PropertyRNA's py_data pointers which store the python function objects. For this reason a second runtime variant of these callbacks has been added. It is only used for runtime callbacks and not in makesrna, but otherwise works the same way.

1 files changed, 21 insertions, 1 deletions

diff --git a/source/blender/makesrna/RNA_types.h b/source/blender/makesrna/RNA_types.h
index dacb2fee212..c76f9824c73 100644
--- a/source/blender/makesrna/RNA_types.h
+++ b/source/blender/makesrna/RNA_types.h
@@ -269,7 +269,27 @@ typedef struct EnumPropertyItem {
 	const char *description;
 } EnumPropertyItem;
 
-/* this is a copy of 'PropEnumItemFunc' defined in rna_internal_types.h */
+/* extended versions with PropertyRNA argument */
+typedef int (*BooleanPropertyGetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop);
+typedef void (*BooleanPropertySetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, int value);
+typedef void (*BooleanArrayPropertyGetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, int *values);
+typedef void (*BooleanArrayPropertySetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, const int *values);
+typedef int (*IntPropertyGetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop);
+typedef void (*IntPropertySetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, int value);
+typedef void (*IntArrayPropertyGetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, int *values);
+typedef void (*IntArrayPropertySetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, const int *values);
+typedef void (*IntPropertyRangeFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, int *min, int *max, int *softmin, int *softmax);
+typedef float (*FloatPropertyGetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop);
+typedef void (*FloatPropertySetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, float value);
+typedef void (*FloatArrayPropertyGetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, float *values);
+typedef void (*FloatArrayPropertySetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, const float *values);
+typedef void (*FloatPropertyRangeFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, float *min, float *max, float *softmin, float *softmax);
+typedef void (*StringPropertyGetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, char *value);
+typedef int (*StringPropertyLengthFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop);
+typedef void (*StringPropertySetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, const char *value);
+typedef int (*EnumPropertyGetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop);
+typedef void (*EnumPropertySetFunc)(struct PointerRNA *ptr, struct PropertyRNA *prop, int value);
+/* same as PropEnumItemFunc */
 typedef EnumPropertyItem *(*EnumPropertyItemFunc)(struct bContext *C, PointerRNA *ptr, struct PropertyRNA *prop, int *free);
 
 typedef struct PropertyRNA PropertyRNA;