Use netclass colour for junction dots and when printing/plotting.

Fixes https://gitlab.com/kicad/code/kicad/issues/4986

Fixes https://gitlab.com/kicad/code/kicad/issues/4982

eeschema/sch_junction.cpp

@@ -99,16 +99,19 @@ const EDA_RECT SCH_JUNCTION::GetBoundingBox() const
 void SCH_JUNCTION::Print( RENDER_SETTINGS* aSettings, const wxPoint& aOffset )
 {
     wxDC*   DC    = aSettings->GetPrintDC();
-    COLOR4D color = ( m_color == COLOR4D::UNSPECIFIED ) ? aSettings->GetLayerColor( GetLayer() ) :
-            m_color ;
-    int diameter =
-            Schematic() ? Schematic()->Settings().m_JunctionSize : Mils2iu( DEFAULT_JUNCTION_DIAM );
+    COLOR4D color = GetColor();
+
+    if( color == COLOR4D::UNSPECIFIED )
+        color = aSettings->GetLayerColor( GetLayer() );
+
+    int diameter = Schematic() ? Schematic()->Settings().m_JunctionSize
+                               : Mils2iu( DEFAULT_JUNCTION_DIAM );
 
     if( m_diameter != 0 )
         diameter = m_diameter;
 
-    GRFilledCircle( nullptr, DC, m_pos.x + aOffset.x, m_pos.y + aOffset.y,
-                    diameter / 2, 0, color, color );
+    GRFilledCircle( nullptr, DC, m_pos.x + aOffset.x, m_pos.y + aOffset.y, diameter / 2, 0,
+                    color, color );
 }
 
 
@@ -170,6 +173,17 @@ void SCH_JUNCTION::Show( int nestLevel, std::ostream& os ) const
 #endif
 
 
+COLOR4D SCH_JUNCTION::GetColor() const
+{
+    NETCLASSPTR netclass = NetClass();
+
+    if( netclass && netclass->GetSchematicColor() != COLOR4D::UNSPECIFIED )
+        return netclass->GetSchematicColor();
+
+    return m_color;
+}
+
+
 bool SCH_JUNCTION::HitTest( const wxPoint& aPosition, int aAccuracy ) const
 {
     EDA_RECT rect = GetBoundingBox();
@@ -204,17 +218,20 @@ bool SCH_JUNCTION::doIsConnected( const wxPoint& aPosition ) const
 
 void SCH_JUNCTION::Plot( PLOTTER* aPlotter )
 {
-    auto* settings = static_cast<KIGFX::SCH_RENDER_SETTINGS*>( aPlotter->RenderSettings() );
+    auto*   settings = static_cast<KIGFX::SCH_RENDER_SETTINGS*>( aPlotter->RenderSettings() );
+    COLOR4D color = GetColor();
 
-    COLOR4D color = ( m_color == COLOR4D::UNSPECIFIED ) ? settings->GetLayerColor( GetLayer() ) :
-            m_color;
-    int diameter =
-            Schematic() ? Schematic()->Settings().m_JunctionSize : Mils2iu( DEFAULT_JUNCTION_DIAM );
+    if( color == COLOR4D::UNSPECIFIED )
+        color = settings->GetLayerColor( GetLayer() );
+
+    aPlotter->SetColor( color );
+
+    int diameter = Schematic() ? Schematic()->Settings().m_JunctionSize
+                               : Mils2iu( DEFAULT_JUNCTION_DIAM );
 
     if( m_diameter != 0 )
         diameter = m_diameter;
 
-    aPlotter->SetColor( color );
     aPlotter->Circle( m_pos, diameter, FILLED_SHAPE );
 }
 

eeschema/sch_junction.h

@@ -100,7 +100,7 @@ public:
     int GetDiameter() const { return m_diameter; }
     void SetDiameter( int aDiameter ) { m_diameter = aDiameter; }
 
-    COLOR4D GetColor() const { return m_color; }
+    COLOR4D GetColor() const;
     void SetColor( const COLOR4D& aColor ) { m_color = aColor; }
 
     bool HitTest( const wxPoint& aPosition, int aAccuracy = 0 ) const override;

eeschema/sch_line.cpp

@@ -284,14 +284,15 @@ int SCH_LINE::GetPenWidth() const
 void SCH_LINE::Print( RENDER_SETTINGS* aSettings, const wxPoint& offset )
 {
     wxDC*   DC = aSettings->GetPrintDC();
-    COLOR4D color = m_stroke.GetColor();
+    COLOR4D color = GetLineColor();
+
+    if( color == COLOR4D::UNSPECIFIED )
+        color = aSettings->GetLayerColor( GetLayer() );
+
     wxPoint start = m_start;
     wxPoint end = m_end;
     int     penWidth = std::max( GetPenWidth(), aSettings->GetDefaultPenWidth() );
 
-    if( color == COLOR4D::UNSPECIFIED )
-        color = aSettings->GetLayerColor( m_Layer );
-
     GRLine( nullptr, DC, start.x, start.y, end.x, end.y, penWidth, color,
             GetwxPenStyle( GetEffectiveLineStyle() ) );
 }
@@ -727,13 +728,14 @@ bool SCH_LINE::doIsConnected( const wxPoint& aPosition ) const
 
 void SCH_LINE::Plot( PLOTTER* aPlotter )
 {
-    auto* settings = static_cast<KIGFX::SCH_RENDER_SETTINGS*>( aPlotter->RenderSettings() );
-    int   penWidth;
+    auto*   settings = static_cast<KIGFX::SCH_RENDER_SETTINGS*>( aPlotter->RenderSettings() );
+    int     penWidth;
+    COLOR4D color = GetLineColor();
 
-    if( m_stroke.GetColor() != COLOR4D::UNSPECIFIED )
-        aPlotter->SetColor( m_stroke.GetColor() );
-    else
-        aPlotter->SetColor( settings->GetLayerColor( GetLayer() ) );
+    if( color == COLOR4D::UNSPECIFIED )
+        color = settings->GetLayerColor( GetLayer() );
+
+    aPlotter->SetColor( color );
 
     switch( m_Layer )
     {