Fill in missing bits of LAYER variable for printing/plotting.

Fixes https://gitlab.com/kicad/code/kicad/issues/11788

common/board_printout.cpp

@@ -133,6 +133,8 @@ void BOARD_PRINTOUT::DrawPage( const wxString& aLayerName, int aPageNum, int aPa
     setupPainter( *painter );
     setupViewLayers( *view, m_settings.m_LayerSet );
 
+    dstSettings->SetLayerName( aLayerName );
+
     VECTOR2I sheetSizeMils = m_settings.m_pageInfo.GetSizeMils();
     VECTOR2I sheetSizeIU( milsToIU( sheetSizeMils.x ),
                           milsToIU( sheetSizeMils.y ) );

common/drawing_sheet/ds_proxy_view_item.cpp

@@ -86,6 +86,7 @@ void DS_PROXY_VIEW_ITEM::buildDrawList( VIEW* aView, DS_DRAW_ITEM_LIST* aDrawLis
     aDrawList->SetFileName( fileName );
     aDrawList->SetSheetName( sheetName );
     aDrawList->SetSheetPath( sheetPath );
+    aDrawList->SetSheetLayer( settings->GetLayerName() );
     aDrawList->SetProject( m_project );
 
     aDrawList->BuildDrawItemsList( *m_pageInfo, *m_titleBlock );

common/plotters/common_plot_functions.cpp

@@ -86,6 +86,7 @@ void PlotDrawingSheet( PLOTTER* plotter, const PROJECT* aProject, const TITLE_BL
     drawList.SetFileName( fn.GetFullName() );   // Print only the short filename
     drawList.SetSheetName( aSheetName );
     drawList.SetSheetPath( aSheetPath );
+    drawList.SetSheetLayer( plotter->RenderSettings()->GetLayerName() );
     drawList.SetProject( aProject );
     drawList.SetIsFirstPage( aIsFirstPage );
 

include/render_settings.h

@@ -1,7 +1,7 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 2019-2020 KiCad Developers, see AUTHORS.TXT for contributors.
+ * Copyright (C) 2019-2022 KiCad Developers, see AUTHORS.TXT for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -112,6 +112,9 @@ public:
     PCB_LAYER_ID GetActiveLayer() const { return m_activeLayer; }
     void SetActiveLayer( PCB_LAYER_ID aLayer ) { m_activeLayer = aLayer; }
 
+    const wxString& GetLayerName() const { return m_layerName; }
+    void SetLayerName( const wxString& aLayerName ) { m_layerName = aLayerName; }
+
     /**
      * Clear the list of active layers.
      */
@@ -293,6 +296,7 @@ protected:
     virtual void update();
 
     PCB_LAYER_ID           m_activeLayer;        // The active layer (as shown by appearance mgr)
+    wxString               m_layerName;
     std::set<unsigned int> m_highContrastLayers; // High-contrast layers (both board layers and
                                                  //   synthetic GAL layers)
     COLOR4D m_layerColors[LAYER_ID_COUNT];       // Layer colors

pcbnew/pcbnew_printout.cpp

@@ -109,7 +109,7 @@ bool PCBNEW_PRINTOUT::OnPrintPage( int aPage )
     if( extractLayer == UNDEFINED_LAYER )
         layerName = _( "Multiple Layers" );
     else
-        layerName = LSET::Name( extractLayer );
+        layerName = m_board->GetLayerName( extractLayer );
 
     // In Pcbnew we can want the layer EDGE always printed
     if( m_pcbnewSettings.m_PrintEdgeCutsOnAllPages )

pcbnew/plot_board_layers.cpp

@@ -1141,6 +1141,10 @@ PLOTTER* StartPlotBoard( BOARD *aBoard, const PCB_PLOT_PARAMS *aPlotOpts, int aL
     KIGFX::PCB_RENDER_SETTINGS* renderSettings = new KIGFX::PCB_RENDER_SETTINGS();
     renderSettings->LoadColors( aPlotOpts->ColorSettings() );
     renderSettings->SetDefaultPenWidth( Millimeter2iu( 0.0212 ) );  // Hairline at 1200dpi
+
+    if( aLayer < GAL_LAYER_ID_END )
+        renderSettings->SetLayerName( aBoard->GetLayerName( ToLAYER_ID( aLayer ) ) );
+
     plotter->SetRenderSettings( renderSettings );
 
     // Compute the viewport and set the other options