[gimp] app: gimp:border propagate babl space

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 5e8a5cf9996a0e2e44108f8ef4b8d87d35f75119
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Jul 6 14:47:27 2018 +0200

    app: gimp:border propagate babl space

 app/operations/gimpoperationborder.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/app/operations/gimpoperationborder.c b/app/operations/gimpoperationborder.c
index 377fc4b669..eba59ab3e6 100644
--- a/app/operations/gimpoperationborder.c
+++ b/app/operations/gimpoperationborder.c
@@ -200,8 +200,9 @@ gimp_operation_border_set_property (GObject      *object,
 static void
 gimp_operation_border_prepare (GeglOperation *operation)
 {
-  gegl_operation_set_format (operation, "input",  babl_format ("Y float"));
-  gegl_operation_set_format (operation, "output", babl_format ("Y float"));
+  const Babl *space = gegl_operation_get_source_space (operation, "input");
+  gegl_operation_set_format (operation, "input",  babl_format_with_space ("Y float", space));
+  gegl_operation_set_format (operation, "output", babl_format_with_space ("Y float", space));
 }
 
 static GeglRectangle
@@ -338,8 +339,8 @@ gimp_operation_border_process (GeglOperation       *operation,
    * them on jaycox gimp org
    */
   GimpOperationBorder *self          = GIMP_OPERATION_BORDER (operation);
-  const Babl          *input_format  = babl_format ("Y float");
-  const Babl          *output_format = babl_format ("Y float");
+  const Babl          *input_format  = gegl_operation_get_format (operation, "input");
+  const Babl          *output_format = gegl_operation_get_format (operation, "output");
 
   gint32 i, j, x, y;