RhodeCode

#include<lemon/math.h>

#include<lemon/bits/invalid.h>

#include<lemon/dim2.h>

#include<lemon/maps.h>

#include<lemon/color.h>

#include<lemon/bits/bezier.h>

///\ingroup eps_io

///\file

///\brief Simple graph drawer

///

///\author Alpar Juttner

namespace lemon {

///Default traits class of \ref GraphToEps

///Default traits class of \ref GraphToEps

///

///\c G is the type of the underlying graph.

template<class G>

struct DefaultGraphToEpsTraits

{

  typedef G Graph;

  typedef typename Graph::Node Node;

  typedef typename Graph::NodeIt NodeIt;

  typedef typename Graph::Arc Arc;

  typedef typename Graph::ArcIt ArcIt;

  typedef typename Graph::InArcIt InArcIt;

  typedef typename Graph::OutArcIt OutArcIt;

  ///\param _pros If it is \c true, then the \c ostream referenced by \c _os

  ///will be explicitly deallocated by the destructor.

  ///By default it is <tt>std::cout</tt>

  DefaultGraphToEpsTraits(const G &_g,std::ostream& _os=std::cout,

			  bool _pros=false) :

    g(_g), os(_os),

    _coords(dim2::Point<double>(1,1)), _nodeSizes(.01), _nodeShapes(0),

    _nodeColors(WHITE), _arcColors(BLACK),

    _arcWidths(1.0), _arcWidthScale(0.003),

    _nodeScale(1.0), _xBorder(10), _yBorder(10), _scale(1.0),

    _nodeBorderQuotient(.1),

    _drawArrows(false), _arrowLength(1), _arrowWidth(0.3),

    _showNodes(true), _showArcs(true),

    _enableParallel(false), _parArcDist(1),

    _showNodeText(false), _nodeTexts(false), _nodeTextSize(1),

    _showNodePsText(false), _nodePsTexts(false), _nodePsTextsPreamble(0),

    _pleaseRemoveOsStream(_pros), _scaleToA4(false),

    _nodeTextColorType(SAME_COL), _nodeTextColors(BLACK),

    _autoNodeScale(false),

    _autoArcWidthScale(false),

    _absoluteNodeSizes(false),

    _absoluteArcWidths(false),

    _negY(false),

    _preScale(true)

  {}

};

///Helper class to implement the named parameters of \ref graphToEps()

///Helper class to implement the named parameters of \ref graphToEps()

///\todo Is 'helper class' a good name for this?

///

  ///Gives a preamble block for node Postscript block.

  ///

  ///\sa nodePsTexts()

  GraphToEps<T> & nodePsTextsPreamble(const char *str) {

    _nodePsTextsPreamble=str ;return *this;

  }

  ///Sets whether the the graph is undirected

  ///Sets whether the the graph is undirected

  ///

  GraphToEps<T> &undirected(bool b=true) {_undirected=b;return *this;}

  ///Sets whether the the graph is directed

  ///Sets whether the the graph is directed.

  ///Use it to show the edges as a pair of directed ones.

  ///Sets the title.

  ///Sets the title of the generated image,

  ///namely it inserts a <tt>%%Title:</tt> DSC field to the header of

  ///the EPS file.

  GraphToEps<T> &title(const std::string &t) {_title=t;return *this;}

  ///Sets the copyright statement.

  ///Sets the copyright statement of the generated image,

  ///namely it inserts a <tt>%%Copyright:</tt> DSC field to the header of

  ///the EPS file.

  ///\todo Multiline copyright notice could be supported.

  GraphToEps<T> &copyright(const std::string &t) {_copyright=t;return *this;}

protected:

  }

public:

  ~GraphToEps() { }

  ///Draws the graph.

  ///Like other functions using

  ///\ref named-templ-func-param "named template parameters",

  ///this function calles the algorithm itself, i.e. in this case

  ///it draws the graph.

  void run() {

    ///\todo better 'epsilon' would be nice here.

    const double EPSILON=1e-9;

    if(dontPrint) return;

    os << "%!PS-Adobe-2.0 EPSF-2.0\n";

    if(_title.size()>0) os << "%%Title: " << _title << '\n';

     if(_copyright.size()>0) os << "%%Copyright: " << _copyright << '\n';

//        << "%%Copyright: XXXX\n"

    os << "%%Creator: LEMON, graphToEps()\n";

    {

      char cbuf[50];

      timeval tv;

      gettimeofday(&tv, 0);

      ctime_r(&tv.tv_sec,cbuf);

      os << "%%CreationDate: " << cbuf;

    }

    if (_autoArcWidthScale) {