drawlabel.h

/*****
 * drawlabel.h
 * John Bowman 2003/03/14
 *
 * Add a label to a picture.
 *****/

#ifndef DRAWLABEL_H
#define DRAWLABEL_H

#include "drawelement.h"
#include "path.h"
#include "angle.h"
#include "transform.h"

namespace camp {

class drawLabel : public virtual drawElement {
protected:
  string label,size;
  transform T;          // A linear (shiftless) transformation.
  pair position;
  pair align;
  pair scale;
  pen pentype;
  double width,height,depth;
  bool havebounds;
  bool suppress;
  pair Align;
  pair texAlign;
  bbox Box;
  bool enabled;

public:
  drawLabel(string label, string size, transform T, pair position,
            pair align, pen pentype, const string& key="")
    : drawElement(key), label(label), size(size), T(shiftless(T)),
      position(position), align(align), pentype(pentype), width(0.0),
      height(0.0), depth(0.0), havebounds(false), suppress(false),
      enabled(false) {}

  virtual ~drawLabel() {}

  void getbounds(iopipestream& tex, const string& texengine);

  void checkbounds();

  void bounds(bbox& b, iopipestream&, boxvector&, bboxlist&);

  bool islabel() {
    return true;
  }

  bool write(texfile *out, const bbox&);

  drawElement *transformed(const transform& t);

  void labelwarning(const char *action);
};

class drawLabelPath : public drawLabel, public drawPathPenBase {
private:
  string justify;
  pair shift;
public:
  drawLabelPath(string label, string size, path src,
                string justify, pair shift, pen pentype,
                const string& key="") :
    drawLabel(label,size,identity,pair(0.0,0.0),pair(0.0,0.0),pentype,key),
    drawPathPenBase(src,pentype), justify(justify), shift(shift) {}

  virtual ~drawLabelPath() {}

  bool svg() {return true;}
  bool svgpng() {return true;}

  void bounds(bbox& b, iopipestream& tex, boxvector&, bboxlist&);

  bool write(texfile *out, const bbox&);

  drawElement *transformed(const transform& t);
};

void setpen(iopipestream& tex, const string& texengine, const pen& pentype);
void texbounds(double& width, double& height, double& depth,
               iopipestream& tex, string& s);

}

#endif