From 528595c7f7d478e73c1d6d65c75681449bcb3265 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Wed, 31 Jul 2013 20:42:24 +0200
Subject: [PATCH] Automatically ignore per-role extruders if they're not
 configured in Printer Settings (only in GUI expert mode) - CLI mode continues
 to autogenerate extruder settings. #1236

---
 lib/Slic3r/GUI/SkeinPanel.pm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/Slic3r/GUI/SkeinPanel.pm b/lib/Slic3r/GUI/SkeinPanel.pm
index 5f0054374..a76137f82 100644
--- a/lib/Slic3r/GUI/SkeinPanel.pm
+++ b/lib/Slic3r/GUI/SkeinPanel.pm
@@ -4,6 +4,7 @@ use warnings;
 use utf8;
 
 use File::Basename qw(basename dirname);
+use List::Util qw(min);
 use Slic3r::Geometry qw(X Y);
 use Wx qw(:dialog :filedialog :font :icon :id :misc :notebook :panel :sizer);
 use Wx::Event qw(EVT_BUTTON);
@@ -404,6 +405,10 @@ sub config {
         $config->set('first_layer_height', $config->nozzle_diameter->[0]);
         $config->set('avoid_crossing_perimeters', 1);
         $config->set('infill_every_layers', 10);
+    } else {
+        my $extruders_count = $self->{options_tabs}{printer}{extruders_count};
+        $config->set("${_}_extruder", min($config->get("${_}_extruder"), $extruders_count))
+            for qw(perimeter infill support_material support_material_interface);
     }
     
     return $config;