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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