Add support for LIB_ALIAS objects.

eeschema/class_libentry.cpp

@@ -813,9 +813,6 @@ void LIB_PART::GetFields( LIB_FIELDS& aList )
 {
     LIB_FIELD*  field;
 
-    // The only caller of this function is the library field editor, so it
-    // establishes policy here.
-
     // Grab the MANDATORY_FIELDS first, in expected order given by
     // enum NumFieldType
     for( int id=0;  id<MANDATORY_FIELDS;  ++id )

eeschema/class_libentry.h

@@ -399,9 +399,7 @@ public:
     void SetFields( const std::vector <LIB_FIELD>& aFieldsList );
 
     /**
-     * Return a list of fields withing this part. The only known caller of
+     * Return a list of fields within this part.
-     * this function is the library part field editor, and it establishes
-     * needed behavior.
      *
      * @param aList - List to add fields to
      */

eeschema/sch_painter.cpp

@@ -141,6 +141,7 @@ bool SCH_PAINTER::Draw( const VIEW_ITEM *aItem, int aLayer )
 */
 	switch(item->Type())
 	{
+	HANDLE_ITEM(LIB_ALIAS_T, LIB_ALIAS);
 	HANDLE_ITEM(LIB_PART_T, LIB_PART);
 	HANDLE_ITEM(LIB_RECTANGLE_T, LIB_RECTANGLE);
         HANDLE_ITEM(LIB_POLYLINE_T, LIB_POLYLINE);
@@ -170,10 +171,10 @@ bool SCH_PAINTER::Draw( const VIEW_ITEM *aItem, int aLayer )
 	return false;
 }
 
+
 void SCH_PAINTER::draw( LIB_PART *aComp, int aLayer, bool aDrawFields, int aUnit, int aConvert )
 {
-    auto comp = const_cast<LIB_PART*>(aComp);
+    for( auto& item : aComp->GetDrawItems() )
-    for ( auto& item : comp->GetDrawItems() )
     {
 		if( !aDrawFields && item.Type() == LIB_FIELD_T )
             continue;
@@ -188,6 +189,30 @@ void SCH_PAINTER::draw ( LIB_PART *aComp, int aLayer, bool aDrawFields, int aUni
     }
 }
 
+
+void SCH_PAINTER::draw( LIB_ALIAS *aAlias, int aLayer )
+{
+    LIB_PART* comp = aAlias->GetPart();
+    int unit = 0;
+    int convert = 0;
+
+    draw( comp, aLayer, false, unit, convert );
+
+    LIB_FIELDS fields;
+    comp->GetFields( fields );
+
+    if( !aAlias->IsRoot() )
+    {
+        fields[ VALUE ].SetText( aAlias->GetName() );
+        fields[ DATASHEET ].SetText( aAlias->GetDocFileName() );
+    }
+
+    for( LIB_FIELD& field : fields )
+        draw( &field, aLayer );
+}
+
+
+
 static VECTOR2D mapCoords( const wxPoint& aCoord )
 {
     return VECTOR2D( aCoord.x, -aCoord.y );

eeschema/sch_painter.h

@@ -32,6 +32,7 @@ class LIB_PIN;
 class LIB_CIRCLE;
 class LIB_ITEM;
 class LIB_PART;
+class LIB_ALIAS;
 class LIB_POLYLINE;
 class LIB_ARC;
 class LIB_FIELD;
@@ -120,6 +121,7 @@ private:
 	void draw( LIB_CIRCLE *, int );
 	void draw( LIB_ITEM *, int );
 	void draw( LIB_PART *, int, bool aDrawFields = true, int aUnit = 0, int aConvert = 0 );
+    void draw( LIB_ALIAS *, int );
     void draw( LIB_ARC *, int );
     void draw( LIB_POLYLINE *, int );
     void draw( LIB_FIELD *, int );