GPencil Onion Skinning: Setting before/after to -1 will turn off onionskinning in that direction

This is an experimental option that I found would have been useful to have,
when making my earlier anim test. The only contentious point is whether it's
better to use a separate boolean flag (perhaps bound to the labels) instead
of overloading this setting (and describing the usage in the tooltip).

1 files changed, 4 insertions, 4 deletions

diff --git a/source/blender/makesrna/intern/rna_gpencil.c b/source/blender/makesrna/intern/rna_gpencil.c
index 82d98d4b199..691eae18d4d 100644
--- a/source/blender/makesrna/intern/rna_gpencil.c
+++ b/source/blender/makesrna/intern/rna_gpencil.c
@@ -770,18 +770,18 @@ static void rna_def_gpencil_layer(BlenderRNA *brna)
 	
 	prop = RNA_def_property(srna, "ghost_before_range", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "gstep");
-	RNA_def_property_range(prop, 0, 120);
+	RNA_def_property_range(prop, -1, 120);
 	RNA_def_property_ui_text(prop, "Frames Before",
 	                         "Maximum number of frames to show before current frame "
-	                         "(0 = show only the previous sketch)");
+	                         "(0 = show only the previous sketch,  -1 = Don't show any frames before current)");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
 	prop = RNA_def_property(srna, "ghost_after_range", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "gstep_next");
-	RNA_def_property_range(prop, 0, 120);
+	RNA_def_property_range(prop, -1, 120);
 	RNA_def_property_ui_text(prop, "Frames After",
 	                         "Maximum number of frames to show after current frame "
-	                         "(0 = show only the next sketch)");
+	                         "(0 = show only the next sketch,  -1 = Don't show any frames after current)");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
 	prop = RNA_def_property(srna, "use_ghost_custom_colors", PROP_BOOLEAN, PROP_NONE);