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/***************************************************************************
*
* Copyright (C) 2006 Elad Lahav (elad_lahav@users.sf.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 DOTFRONTEND_H
#define DOTFRONTEND_H
#include "frontend.h"
#include <tqpointarray.h>
class GraphWidget;
/**
* Front-end for executing graphviz's command-line tool.
* This tool accepts the description of a graph in the 'dot' language, and
* outputs a set of drawing instructions for the graph.
* @author Elad Lahav
*/
class DotFrontend : public Frontend
{
Q_OBJECT
public:
DotFrontend(GraphWidget*);
~DotFrontend();
bool run(const TQString&);
static bool verify(const TQString&);
protected:
virtual ParseResult parseStdout(TQString&, ParserDelim);
private:
/** The owner graph widget on which to draw. */
GraphWidget* m_pGraph;
/** State values for the parser state machine. */
enum ParserState { Graph, GraphScale, GraphWidth, GraphHeight,
NodeEdgeStop, NodeName, NodeCentreX, NodeCentreY, NodeWidth, NodeHeight,
EdgeHead, EdgeTail, EdgeCurveSize, EdgeCurveX, EdgeCurveY,
EndNodeEdge };
/** The current state of the parser state machine. */
ParserState m_state;
/** The horizontal DPI value of the graph widget. */
double m_dDpiX;
/** The vertical DPI value of the graph widget. */
double m_dDpiY;
};
#endif
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