[prmr#528] Fix TypeNodeRenderer not displaying interface text on gui and

add copyright information.

src/org/jetuml/rendering/CanvasFont.java

@@ -1,3 +1,23 @@
+/*******************************************************************************
+ * JetUML - A desktop application for fast UML diagramming.
+ *
+ * Copyright (C) 2020, 2021 by McGill University.
+ *     
+ * See: https://github.com/prmr/JetUML
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see http://www.gnu.org/licenses.
+ *******************************************************************************/
 package org.jetuml.rendering;
 
 import org.jetuml.annotations.Singleton;
@@ -11,8 +31,8 @@
 import javafx.scene.text.FontWeight;
 
 /**
- * Responsible for performing more rudimentary operations involving font,
- * as well as being synchronized with the user's current font.
+ * A singleton that is in sync with user font size setting and 
+ * manages font metrics calculations.
  */
 @Singleton
 public final class CanvasFont implements IntegerPreferenceChangeHandler

src/org/jetuml/rendering/nodes/TypeNodeRenderer.java

@@ -102,9 +102,9 @@ else if( methodHeight > 0 )
 		}
 	}
 
-	private static void drawName(TypeNode pNode, Rectangle pBounds, int pSplitY, int pNameBoxHeight, GraphicsContext pGraphics)
+	private void drawName(TypeNode pNode, Rectangle pBounds, int pSplitY, int pNameBoxHeight, GraphicsContext pGraphics)
 	{
-		String name = pNode.getName();
+		String name = getNameText(pNode);
 		if( name.length() > 2 && name.startsWith("/") && name.endsWith("/") )
 		{
 			ITALIC_NAME_VIEWER.draw(removeMarkup(name), pGraphics,