From 65fe561a4bef2c60ea3abbf816e9eab6a6b48277 Mon Sep 17 00:00:00 2001
From: jean-pierre charras <jp.charras@wanadoo.fr>
Date: Sun, 13 Nov 2016 19:03:52 +0100
Subject: [PATCH] Fix from master branch: lp:1635723  (pcbnew: allows sometimes
 to draw tracks in non copper layers in Gal Mode)

---
 pcbnew/router/router_tool.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pcbnew/router/router_tool.cpp b/pcbnew/router/router_tool.cpp
index 782145b4e4..8e748b7b19 100644
--- a/pcbnew/router/router_tool.cpp
+++ b/pcbnew/router/router_tool.cpp
@@ -486,6 +486,13 @@ bool ROUTER_TOOL::onViaCommand( TOOL_EVENT& aEvent, VIATYPE_T aType )
 bool ROUTER_TOOL::prepareInteractive()
 {
     int routingLayer = getStartLayer( m_startItem );
+
+    if( !IsCopperLayer( routingLayer ) )
+    {
+        DisplayError( m_frame, _( "Tracks on Copper layers only " ) );
+        return false;
+    }
+
     m_frame->SetActiveLayer( ToLAYER_ID( routingLayer ) );
 
     // fixme: switch on invisible layer