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+/***************************************************************************
+ *
+ * Copyright (C) 2005 Elad Lahav (elad_lahav@users.sourceforge.net)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ***************************************************************************/
+
+#ifndef GRAPHNODE_H
+#define GRAPHNODE_H
+
+#include <qcanvas.h>
+#include <qdict.h>
+#include "graphedge.h"
+
+/**
+ * A canvas item that draws the name of a function insider a filled rectangle.
+ * This item represents a function in the call graph.
+ * @author Elad Lahav
+ */
+class GraphNode : public QCanvasPolygon
+{
+public:
+	GraphNode(QCanvas* pCanvas, const QString&, bool bMultiCall = false);
+	~GraphNode();
+
+	GraphEdge* addOutEdge(GraphNode*);
+	void dfs();
+	void removeOutEdges();
+	void removeInEdges();
+	void getFirstNeighbour(GraphNode*&, bool&);
+	
+	/**
+	 * @param	rect	The bounding rectangle of the node
+	 */
+	void setRect(const QRect& rect);
+	
+	/**
+	 * @param	font	The font to use for drawing the text
+	 */
+	void setFont(const QFont& font) { m_font = font; }
+	
+	/**
+	 * @return	The name of the function
+	 */
+	const QString& getFunc() const { return m_sFunc; }
+	
+	/**
+	 * @return	true for a multiple-call node, false otherwise
+	 */
+	bool isMultiCall() { return m_bMultiCall; }
+	
+	/**
+	 * @return	The set of outgoing edges
+	 */
+	QDict<GraphEdge>& getOutEdges() { return m_dictOutEdges; }
+	
+	/**
+	 * @return	true if this node was already visited during the current DFS,
+	 *			false otherwise
+	 */
+	bool dfsVisited() { return m_bDfsFlag; }
+	
+	/**
+	 * Clears the 'DFS-visited' flag, in preparation for the next DFS.
+	 */
+	void dfsReset() { m_bDfsFlag = false; }
+	
+	/** Identifies this class among other QCanvasItem classes. */
+	static int RTTI;
+
+	/**
+	 * @return	The class identifier
+	 */
+	virtual int rtti() const { return RTTI; }
+	
+protected:
+	virtual void drawShape(QPainter&);
+	
+private:
+	/** Function name. */
+	QString m_sFunc;
+
+	/** A list of outgoing edges indexed by destination. */
+	QDict<GraphEdge> m_dictOutEdges;
+
+	/** A list of incoming edges indexed by destination. */
+	QDict<GraphEdge> m_dictInEdges;
+
+	/** The bounding rectangle for the node. */
+	QRect m_rect;
+
+	/** The font to use for drawing the text. */
+	QFont m_font;
+	
+	/** true for a multiple-call node, false otherwise. */
+	bool m_bMultiCall;
+	
+	/** Determines whether this node was visited during a depth-first 
+		search. */
+	bool m_bDfsFlag;
+};
+
+#endif