From bc8a78c6dfcd4e0f531b18deabfeccc3c0553428 Mon Sep 17 00:00:00 2001
From: jean-pierre charras <jp.charras@wanadoo.fr>
Date: Thu, 23 Feb 2023 09:50:05 +0100
Subject: [PATCH] Eeschema plot: honor B&W plot option for bitmap images. Fixes
 #14013 https://gitlab.com/kicad/code/kicad/issues/14013

---
 common/plotters/SVG_plotter.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/common/plotters/SVG_plotter.cpp b/common/plotters/SVG_plotter.cpp
index ca947d85d8..40ceaa677b 100644
--- a/common/plotters/SVG_plotter.cpp
+++ b/common/plotters/SVG_plotter.cpp
@@ -633,7 +633,13 @@ void SVG_PLOTTER::PlotImage( const wxImage& aImage, const VECTOR2I& aPos, double
     {
         wxMemoryOutputStream img_stream;
 
-        aImage.SaveFile( img_stream, wxBITMAP_TYPE_PNG );
+        if( m_colorMode )
+            aImage.SaveFile( img_stream, wxBITMAP_TYPE_PNG );
+        else    // Plot in B&W
+        {
+            wxImage image = aImage.ConvertToGreyscale();
+            image.SaveFile( img_stream, wxBITMAP_TYPE_PNG );
+        }
         size_t input_len = img_stream.GetOutputStreamBuffer()->GetBufferSize();
         std::vector<uint8_t> buffer( input_len );
         std::vector<uint8_t> encoded;