From a9d08a620e729f1ff6e676ee5bc0f9a2ae42ba18 Mon Sep 17 00:00:00 2001
From: Simon Wells <swel024@gmail.com>
Date: Sat, 21 May 2016 19:38:47 -0400
Subject: [PATCH] Hide OpenGL scrollbars on OS X to fix freeze

Fixes: https://bugs.launchpad.net/kicad/+bug/1553428
---
 common/draw_panel_gal.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/common/draw_panel_gal.cpp b/common/draw_panel_gal.cpp
index 5ee636d866..aa72e8ea6b 100644
--- a/common/draw_panel_gal.cpp
+++ b/common/draw_panel_gal.cpp
@@ -64,7 +64,13 @@ EDA_DRAW_PANEL_GAL::EDA_DRAW_PANEL_GAL( wxWindow* aParentWindow, wxWindowID aWin
 
     SwitchBackend( aGalType );
     SetBackgroundStyle( wxBG_STYLE_CUSTOM );
+    
+// Scrollbars broken in GAL on OSX
+#ifdef __WXMAC__
+    ShowScrollbars( wxSHOW_SB_NEVER, wxSHOW_SB_NEVER );
+#else
     ShowScrollbars( wxSHOW_SB_ALWAYS, wxSHOW_SB_ALWAYS );
+#endif
     EnableScrolling( false, false );    // otherwise Zoom Auto disables GAL canvas
 
     m_painter = new KIGFX::PCB_PAINTER( m_gal );
@@ -160,7 +166,11 @@ void EDA_DRAW_PANEL_GAL::onPaint( wxPaintEvent& WXUNUSED( aEvent ) )
     m_drawing = true;
     KIGFX::PCB_RENDER_SETTINGS* settings = static_cast<KIGFX::PCB_RENDER_SETTINGS*>( m_painter->GetSettings() );
 
+// Scrollbars broken in GAL on OSX
+#ifndef __WXMAC__
     m_viewControls->UpdateScrollbars();
+#endif
+
     m_view->UpdateItems();
 
     m_gal->BeginDrawing();