Cleanup: Enum for mask overlay mode

source/blender/editors/include/ED_mask.h

@@ -27,6 +27,8 @@
 extern "C" {
 #endif
 
+#include "DNA_mask_types.h"
+
 struct Depsgraph;
 struct KeyframeEditData;
 struct MaskLayer;
@@ -70,7 +72,7 @@ void ED_mask_draw_region(struct Depsgraph *depsgraph,
                          struct ARegion *region,
                          const char draw_flag,
                          const char draw_type,
-                         const char overlay_mode,
+                         const eMaskOverlayMode overlay_mode,
                          const int width_i,
                          const int height_i,
                          const float aspx,

source/blender/editors/mask/mask_draw.c

@@ -674,7 +674,7 @@ void ED_mask_draw_region(
     ARegion *region,
     const char draw_flag,
     const char draw_type,
-    const char overlay_mode,
+    const eMaskOverlayMode overlay_mode,
     /* convert directly into aspect corrected vars */
     const int width_i,
     const int height_i,

source/blender/makesdna/DNA_mask_types.h

@@ -225,10 +225,10 @@ enum {
 };
 
 /* MaskSpaceInfo->overlay_mode */
-enum {
+typedef enum eMaskOverlayMode {
   MASK_OVERLAY_ALPHACHANNEL = 0,
   MASK_OVERLAY_COMBINED = 1,
-};
+} eMaskOverlayMode;
 
 /* masklay->blend */
 enum {