hex::svg Namespace Reference

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Detailed Description

Output hex:: objects as Scalable Vector Graphics (SVG) - which you can easily convert to PNG or JPG.

Classes
class	Identity
	Parent class for objects that can have an id, SVG style & SVG class name. More...
class	Document
Typedefs
typedef std::map< std::string, std::string >	Style
Functions
std::string	style_str (const Style &st)
	Render a style dictionary to SVG.
Style	style_dict (const std::string &s) throw (hex::invalid_argument)
	Construct a style dictionary from an SVG string.
std::ostream &	operator<< (std::ostream &os, hex::Point p)
std::string	strip (const std::string &s)
	Helper function - strip whitespace from the start & end of a string.
std::string	path_append (char &cmd, Point &p, char cmd1, const Point &p1)
	Helper function - append a new relative point to a path.
template<class InputIterator>
std::ostream &	output_path_data (const Document &doc, std::ostream &os, InputIterator first, InputIterator last)
	Helper function.

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Typedef Documentation

typedef std::map<std::string,std::string> hex::svg::Style

Definition at line 39 of file hexsvg.h.

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Function Documentation

std::ostream& hex::svg::operator<<	(	std::ostream &	os,
		hex::Point	p
	)			[inline]

Definition at line 50 of file hexsvg.h.

References hex::Point::x, and hex::Point::y.

{
  os<<p.x<<","<<p.y;
  return os;
}

template<class InputIterator>

std::ostream& hex::svg::output_path_data	(	const Document &	doc,
		std::ostream &	os,
		InputIterator	first,
		InputIterator	last
	)

Helper function.

Definition at line 108 of file svg.cc.

References hex::svg::Document::T().

Referenced by hex::svg::Document::draw_complex_area().

{
  assert(first!=last);
  --last;
  os<<"M "<<doc.T(*first)<<" L";
  for(InputIterator p =++first; p!=last; ++p)
      os<<" "<<doc.T(*p);
  os<<" Z";
  return os;
}

std::string hex::svg::path_append	(	char &	cmd,
		Point &	p,
		char	cmd1,
		const Point &	p1
	)

Helper function - append a new relative point to a path.

Parameters:

	cmd	in/out current command letter
	p	in/out current path point
	cmd1	desired command letter
	p1	desired point

Definition at line 88 of file svg.cc.

References hex::Point::str().

Referenced by hex::svg::Document::draw_skeleton().

{
  std::ostringstream ss;
  if(p != p1)
  {
    if(cmd != cmd1)
    {
      ss<<" "<<cmd1;
      cmd=cmd1;
    }
    ss<<" "<<(p1-p);
    p=p1;
  }
  return ss.str();
}

std::string hex::svg::strip

(

const std::string &

s

)

Helper function - strip whitespace from the start & end of a string.

Definition at line 37 of file svg.cc.

Referenced by style_dict().

{
  std::string::size_type p0 =s.find_first_not_of(" \t\n");
  std::string::size_type p1 =s.find_last_of(" \t\n");
  return s.substr(p0,p1-p0);
}

Style hex::svg::style_dict

(

const std::string &

s

)

throw (hex::invalid_argument)

Construct a style dictionary from an SVG string.

Definition at line 60 of file svg.cc.

References strip().

{
  Style result;
  std::string::size_type pos =0;
  while(true)
  {
    pos=s.find_first_not_of(";",pos);
    if(pos==std::string::npos)
        break;
    std::string::size_type semi =s.find(";",pos);
    std::string clause =s.substr(pos,semi-pos);
    std::string::size_type colon =clause.find(":");
    if(colon==std::string::npos || colon==0 || (colon+1)>=clause.size())
        throw hex::invalid_argument(s);
    result[ strip(s.substr(0,colon)) ] = strip(s.substr(colon+1));
    pos=semi;
  }
  return result;
}

std::string hex::svg::style_str

(

const Style &

st

)

Render a style dictionary to SVG.

Definition at line 46 of file svg.cc.

{
  std::string result ="";
  for(Style::const_iterator it=st.begin(); it!=st.end(); ++it)
  {
    if(!result.empty())
        result += ';';
    result += it->first + ":" + it->second;
  }
  return result;
}

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