# HG changeset patch
# User Rik <rik@octave.org>
# Date 1448327738 28800
# Node ID f90295782d604ea4baec004a04402f3fe9fe96ac
# Parent  1a329319975badb9b60e10541c93075408067ab9
Accept color value of "none" for line objects (bug #44224).

* gl-render.cc: Check color value and don't bother to draw line if value is
"none".

* graphics.in.h: Set default value of color property to be a union of a color
value and a radio value.

diff --git a/libinterp/corefcn/gl-render.cc b/libinterp/corefcn/gl-render.cc
--- a/libinterp/corefcn/gl-render.cc
+++ b/libinterp/corefcn/gl-render.cc
@@ -1518,7 +1518,7 @@
         clip[i] = (clip_code (x(i), y(i), z_mid) & clip_mask);
     }
 
-  if (! props.linestyle_is ("none"))
+  if (! props.linestyle_is ("none") && ! props.color_is ("none"))
     {
       set_color (props.get_color_rgb ());
       set_linestyle (props.get_linestyle (), false);
diff --git a/libinterp/corefcn/graphics.in.h b/libinterp/corefcn/graphics.in.h
--- a/libinterp/corefcn/graphics.in.h
+++ b/libinterp/corefcn/graphics.in.h
@@ -4411,7 +4411,7 @@
     // Programming note: Keep property list sorted if new ones are added.
 
     BEGIN_PROPERTIES (line)
-      color_property color , color_values (0, 0, 0)
+      color_property color , color_property (color_values (0, 0, 0), radio_values ("none"))
       string_property displayname , ""
       radio_property erasemode , "{normal}|none|xor|background"
       // FIXME: interpreter is not a property of Matlab line objects.