[Bf-blender-cvs] [b47affbd756] greasepencil-refactor: GPencil: Reset Mask list index when remove first element

[Antonio Vazquez]

Commit: b47affbd75631b090c842b53ecde9626d2cf1f29
Author: Antonio Vazquez
Date:   Tue Feb 11 16:47:25 2020 +0100
Branches: greasepencil-refactor
https://developer.blender.org/rBb47affbd75631b090c842b53ecde9626d2cf1f29

GPencil: Reset Mask list index when remove first element

===================================================================

M	source/blender/editors/gpencil/gpencil_data.c

===================================================================

diff --git a/source/blender/editors/gpencil/gpencil_data.c b/source/blender/editors/gpencil/gpencil_data.c
index a8e4947cda2..4d7c016fb94 100644
--- a/source/blender/editors/gpencil/gpencil_data.c
+++ b/source/blender/editors/gpencil/gpencil_data.c
@@ -3398,8 +3398,12 @@ static int gp_layer_mask_remove_exec(bContext *C, wmOperator *op)
       BLI_freelinkN(&gpl->mask_layers, mask);
       gpl->act_mask--;
       CLAMP_MIN(gpl->act_mask, 0);
+      if ((gpl->mask_layers.first != NULL) && (gpl->act_mask == 0)) {
+        gpl->act_mask = 1;
+      }
     }
   }
+
   /* notifiers */
   DEG_id_tag_update(&gpd->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY);
   WM_event_add_notifier(C, NC_GPENCIL | ND_DATA | NA_EDITED, NULL);