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/***************************************************************************
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*
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* Copyright (C) 2006 Elad Lahav (elad_lahav@users.sf.net)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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***************************************************************************/
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#ifndef DOTFRONTEND_H
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#define DOTFRONTEND_H
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#include <frontend.h>
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#include <ntqpointarray.h>
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class GraphWidget;
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/**
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* Front-end for executing graphviz's command-line tool.
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* This tool accepts the description of a graph in the 'dot' language, and
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* outputs a set of drawing instructions for the graph.
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* @author Elad Lahav
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*/
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class DotFrontend : public Frontend
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{
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Q_OBJECT
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public:
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DotFrontend(GraphWidget*);
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~DotFrontend();
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bool run(const TQString&);
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static bool verify(const TQString&);
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protected:
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virtual ParseResult parseStdout(TQString&, ParserDelim);
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private:
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/** The owner graph widget on which to draw. */
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GraphWidget* m_pGraph;
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/** State values for the parser state machine. */
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enum ParserState { Graph, GraphScale, GraphWidth, GraphHeight,
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NodeEdgeStop, NodeName, NodeCentreX, NodeCentreY, NodeWidth, NodeHeight,
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EdgeHead, EdgeTail, EdgeCurveSize, EdgeCurveX, EdgeCurveY,
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EndNodeEdge };
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/** The current state of the parser state machine. */
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ParserState m_state;
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/** The horizontal DPI value of the graph widget. */
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double m_dDpiX;
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/** The vertical DPI value of the graph widget. */
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double m_dDpiY;
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};
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#endif
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