Pcbnew: do not display the outlines of a very special zone used by DRC

to show layer mask bridges created by DRC to show these bridges.
This is not a real ZONE, just a container to displays these filled areas.

pcbnew/board.cpp

@@ -101,6 +101,7 @@ BOARD::BOARD() :
     // Creates a zone to show sloder mask bridges created by a min web value
     // it it just to show them
     m_SolderMaskBridges = new ZONE( this );
+    m_SolderMaskBridges->SetHatchStyle( ZONE_BORDER_DISPLAY_STYLE::INVISIBLE_BORDER );
     m_SolderMaskBridges->SetLayerSet( LSET().set( F_Mask ).set( B_Mask ) );
     int infinity = ( std::numeric_limits<int>::max() / 2 ) - pcbIUScale.mmToIU( 1 );
     m_SolderMaskBridges->Outline()->NewOutline();

pcbnew/dialogs/dialog_copper_zones.cpp

@@ -294,6 +294,7 @@ bool DIALOG_COPPER_ZONE::TransferDataToWindow()
     case ZONE_BORDER_DISPLAY_STYLE::NO_HATCH:      m_OutlineDisplayCtrl->SetSelection( 0 ); break;
     case ZONE_BORDER_DISPLAY_STYLE::DIAGONAL_EDGE: m_OutlineDisplayCtrl->SetSelection( 1 ); break;
     case ZONE_BORDER_DISPLAY_STYLE::DIAGONAL_FULL: m_OutlineDisplayCtrl->SetSelection( 2 ); break;
+    case ZONE_BORDER_DISPLAY_STYLE::INVISIBLE_BORDER: break;    // Not used for standard zones
     }
 
     m_outlineHatchPitch.SetValue( m_settings.m_BorderHatchPitch );

pcbnew/dialogs/dialog_non_copper_zones_properties.cpp

@@ -178,6 +178,7 @@ bool DIALOG_NON_COPPER_ZONES_EDITOR::TransferDataToWindow()
     case ZONE_BORDER_DISPLAY_STYLE::NO_HATCH:      m_OutlineDisplayCtrl->SetSelection( 0 ); break;
     case ZONE_BORDER_DISPLAY_STYLE::DIAGONAL_EDGE: m_OutlineDisplayCtrl->SetSelection( 1 ); break;
     case ZONE_BORDER_DISPLAY_STYLE::DIAGONAL_FULL: m_OutlineDisplayCtrl->SetSelection( 2 ); break;
+    case ZONE_BORDER_DISPLAY_STYLE::INVISIBLE_BORDER: break;    // Not used for standard zones
     }
 
     m_outlineHatchPitch.SetValue( m_settings.m_BorderHatchPitch );

pcbnew/dialogs/dialog_rule_area_properties.cpp

@@ -156,6 +156,7 @@ bool DIALOG_RULE_AREA_PROPERTIES::TransferDataToWindow()
 
     switch( m_zonesettings.m_ZoneBorderDisplayStyle )
     {
+    case ZONE_BORDER_DISPLAY_STYLE::INVISIBLE_BORDER:   // Not used for standard zones. Here use NO_HATCH
     case ZONE_BORDER_DISPLAY_STYLE::NO_HATCH:      m_OutlineDisplayCtrl->SetSelection( 0 ); break;
     case ZONE_BORDER_DISPLAY_STYLE::DIAGONAL_EDGE: m_OutlineDisplayCtrl->SetSelection( 1 ); break;
     case ZONE_BORDER_DISPLAY_STYLE::DIAGONAL_FULL: m_OutlineDisplayCtrl->SetSelection( 2 ); break;

pcbnew/pcb_painter.cpp

@@ -2423,8 +2423,9 @@ void PCB_PAINTER::draw( const ZONE* aZone, int aLayer )
     if( !IsZoneFillLayer( aLayer ) )
     {
         const SHAPE_POLY_SET* outline = aZone->Outline();
+        bool allowDrawOutline = aZone->GetHatchStyle() != ZONE_BORDER_DISPLAY_STYLE::INVISIBLE_BORDER;
 
-        if( !m_pcbSettings.m_isPrinting && outline && outline->OutlineCount() > 0 )
+        if( allowDrawOutline && !m_pcbSettings.m_isPrinting && outline && outline->OutlineCount() > 0 )
         {
             m_gal->SetStrokeColor( color.a > 0.0 ? color.WithAlpha( 1.0 ) : color );
             m_gal->SetIsFill( false );

pcbnew/zone_settings.h

@@ -49,7 +49,8 @@ enum class ZONE_BORDER_DISPLAY_STYLE
 {
     NO_HATCH,
     DIAGONAL_FULL,
-    DIAGONAL_EDGE
+    DIAGONAL_EDGE,
+    INVISIBLE_BORDER        // Disable outline drawing for very special cases
 };
 
 /// Whether or not to remove isolated islands from a zone