/Users/barrand/private/dev/softinex/old/inexlib-1.2/inlib/inlib/sg/style_parser

Go to the documentation of this file.

// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file inlib.license for terms.

#ifndef inlib_sg_style_parser
#define inlib_sg_style_parser

#include "styles"
#include "enums"
#include "style_colormap"

#include "../smanip"  //words
#include "../cstr" //for get_lines
#include "../fmath"

#include <string>
#include <cstdio> //::sscanf

namespace inlib {
namespace sg {

class style_parser {
public:
  style_parser()
  :m_color(0,0,0)
  ,m_highlight_color(0,0,0)
  ,m_back_color(1,1,1)
  ,m_line_width(1)
  ,m_marker_size(1)
  ,m_font_size(10)
  ,m_line_pattern(line_solid)
  ,m_marker_style(marker_dot)
  ,m_area_style(area_solid)
  ,m_modeling(modeling_boxes())
  ,m_light_model(light_model_phong())
  ,m_tick_modeling(tick_modeling_hippo())
  ,m_encoding(encoding_none())
  ,m_smoothing(false)
  ,m_hinting(false)
  ,m_cut("")
  ,m_painting(painting_uniform)
  ,m_hatching(hatching_none)
  ,m_projection(projection_none)
  ,m_font("default")
  ,m_multi_node_limit(no_limit())
  ,m_divisions(510) //Same as ROOT/TAttAxis
  ,m_rotation_steps(24) //Same as SbPolyhedron default.
  ,m_transparency(0)
  ,m_back_transparency(0)
  ,m_back_shadow(0)
  ,m_spacing(0.05F)
  ,m_angle(fpi()/4.0F)
  ,m_scale(1)
  ,m_offset(0)
  ,m_strip_width(0)
  ,m_visible(true)
  ,m_bar_offset(0.25F)
  ,m_bar_width(0.5F)
  ,m_editable(false)
  ,m_automated(true)
  ,m_options("")
  ,m_color_mapping("")
  ,m_enforced(false)
  ,m_translation(0,0,0)
  ,m_front_face(winding_ccw)  
  ,m_hjust(left)
  ,m_vjust(bottom)
  {}
  
  virtual ~style_parser(){}
public:
  style_parser(const style_parser& a_from)
  :m_color(a_from.m_color)
  ,m_highlight_color(a_from.m_highlight_color)
  ,m_back_color(a_from.m_back_color)
  ,m_line_width(a_from.m_line_width)
  ,m_marker_size(a_from.m_marker_size)
  ,m_font_size(a_from.m_font_size)
  ,m_line_pattern(a_from.m_line_pattern)
  ,m_marker_style(a_from.m_marker_style)
  ,m_area_style(a_from.m_area_style)
  ,m_modeling (a_from.m_modeling )
  ,m_light_model(a_from.m_light_model)
  ,m_tick_modeling(a_from.m_tick_modeling)
  ,m_encoding(a_from.m_encoding)
  ,m_smoothing(a_from.m_smoothing)
  ,m_hinting(a_from.m_hinting)
  ,m_cut(a_from.m_cut)
  ,m_painting(a_from.m_painting)
  ,m_hatching(a_from.m_hatching)
  ,m_projection(a_from.m_projection)
  ,m_font(a_from.m_font)
  ,m_multi_node_limit(a_from.m_multi_node_limit)
  ,m_divisions(a_from.m_divisions)
  ,m_rotation_steps(a_from.m_rotation_steps)
  ,m_transparency(a_from.m_transparency)
  ,m_back_transparency(a_from.m_back_transparency)
  ,m_back_shadow(a_from.m_back_shadow)
  ,m_spacing(a_from.m_spacing)
  ,m_angle(a_from.m_angle)
  ,m_scale(a_from.m_scale)
  ,m_offset(a_from.m_offset)
  ,m_strip_width(a_from.m_strip_width)
  ,m_visible(a_from.m_visible)
  ,m_bar_offset(a_from.m_bar_offset)
  ,m_bar_width(a_from.m_bar_width)
  ,m_editable(a_from.m_editable)
  ,m_automated(a_from.m_automated)
  ,m_options(a_from.m_options)
  ,m_color_mapping(a_from.m_color_mapping)
  ,m_enforced(a_from.m_enforced)
  ,m_translation(a_from.m_translation)
  ,m_front_face(a_from.m_front_face)
  ,m_hjust(a_from.m_hjust)
  ,m_vjust(a_from.m_vjust)
  {}

  style_parser& operator=(const style_parser& a_from){copy(a_from);return *this;}
public:
  static int no_limit() {return (-1);}
public:
  void copy(const style_parser& a_from){
    m_color = a_from.m_color;
    m_highlight_color = a_from.m_highlight_color;
    m_back_color = a_from.m_back_color;
    m_line_width = a_from.m_line_width;
    m_marker_size = a_from.m_marker_size;
    m_font_size = a_from.m_font_size;
    m_line_pattern = a_from.m_line_pattern;
    m_marker_style = a_from.m_marker_style;
    m_area_style = a_from.m_area_style;
    m_modeling  = a_from.m_modeling ;
    m_light_model = a_from.m_light_model;
    m_tick_modeling = a_from.m_tick_modeling;
    m_encoding = a_from.m_encoding;
    m_smoothing = a_from.m_smoothing;
    m_hinting = a_from.m_hinting;
    m_cut = a_from.m_cut;
    m_painting = a_from.m_painting;
    m_hatching = a_from.m_hatching;
    m_projection = a_from.m_projection;
    m_font = a_from.m_font;
    m_multi_node_limit = a_from.m_multi_node_limit;
    m_divisions = a_from.m_divisions;
    m_rotation_steps = a_from.m_rotation_steps;
    m_transparency = a_from.m_transparency;
    m_back_transparency = a_from.m_back_transparency;
    m_back_shadow = a_from.m_back_shadow;
    m_spacing = a_from.m_spacing;
    m_angle = a_from.m_angle;
    m_scale = a_from.m_scale;
    m_offset = a_from.m_offset;
    m_strip_width = a_from.m_strip_width;
    m_visible = a_from.m_visible;
    m_bar_offset = a_from.m_bar_offset;
    m_bar_width = a_from.m_bar_width;
    m_editable = a_from.m_editable;
    m_automated = a_from.m_automated;
    m_options = a_from.m_options;
    m_color_mapping = a_from.m_color_mapping;
    m_enforced = a_from.m_enforced;
    m_translation = a_from.m_translation;
    m_front_face = a_from.m_front_face;
    m_hjust = a_from.m_hjust;
    m_vjust = a_from.m_vjust;
  }

  bool equal(const style_parser& a_from){
    if(m_line_width!=a_from.m_line_width) return false;
    if(m_marker_size!=a_from.m_marker_size) return false;
    if(m_font_size!=a_from.m_font_size) return false;
    if(m_line_pattern!=a_from.m_line_pattern) return false;
    if(m_marker_style!=a_from.m_marker_style) return false;
    if(m_area_style!=a_from.m_area_style) return false;
    if(m_smoothing!=a_from.m_smoothing) return false;
    if(m_hinting!=a_from.m_hinting) return false;
    if(m_painting!=a_from.m_painting) return false;
    if(m_hatching!=a_from.m_hatching) return false;
    if(m_projection!=a_from.m_projection) return false;
    if(m_multi_node_limit!=a_from.m_multi_node_limit) return false;
    if(m_divisions!=a_from.m_divisions) return false;
    if(m_rotation_steps!=a_from.m_rotation_steps) return false;
    if(m_transparency!=a_from.m_transparency) return false;
    if(m_back_transparency!=a_from.m_back_transparency) return false;
    if(m_back_shadow!=a_from.m_back_shadow) return false;
    if(m_spacing!=a_from.m_spacing) return false;
    if(m_angle!=a_from.m_angle) return false;
    if(m_scale!=a_from.m_scale) return false;
    if(m_offset!=a_from.m_offset) return false;
    if(m_strip_width!=a_from.m_strip_width) return false;
    if(m_visible!=a_from.m_visible) return false;
    if(m_bar_offset!=a_from.m_bar_offset) return false;
    if(m_bar_width!=a_from.m_bar_width) return false;
    if(m_editable!=a_from.m_editable) return false;
    if(m_automated!=a_from.m_automated) return false;
    if(m_enforced!=a_from.m_enforced) return false;
  
    //color
    if(m_color!=a_from.m_color) return false;
    if(m_highlight_color!=a_from.m_highlight_color) return false;
    if(m_back_color!=a_from.m_back_color) return false;
  
    //std::string
    if(m_modeling !=a_from.m_modeling ) return false;
    if(m_light_model!=a_from.m_light_model) return false;
    if(m_tick_modeling!=a_from.m_tick_modeling) return false;
    if(m_encoding!=a_from.m_encoding) return false;
    if(m_cut!=a_from.m_cut) return false;
    if(m_font!=a_from.m_font) return false;
    if(m_options!=a_from.m_options) return false;
    if(m_color_mapping!=a_from.m_color_mapping) return false;
  
    if(m_translation!=a_from.m_translation) return false;

    if(m_front_face!=a_from.m_front_face) return false;

    if(m_hjust!=a_from.m_hjust) return false;
    if(m_vjust!=a_from.m_vjust) return false;

    return true;
  }

  virtual void reset(){ //virtual because of SoGC
    m_color = colorf::black();
    m_highlight_color = colorf::lightgrey();
    m_back_color = colorf::white();
    m_line_width = 1;
    m_marker_size = 1;
    m_font_size = 10;
    m_line_pattern = line_solid;
    m_marker_style = marker_dot;
    m_area_style = area_solid;
    m_modeling  = modeling_boxes();
    m_light_model = light_model_phong();
    m_tick_modeling = tick_modeling_hippo();
    m_encoding = encoding_none();
    m_smoothing = false;
    m_hinting = false;
    m_cut = "";
    m_painting = painting_uniform;
    m_hatching = hatching_none;
    m_projection = projection_none;
    m_font = "default";
    m_multi_node_limit = no_limit();
    m_transparency = 0;
    m_back_transparency = 0;
    m_back_shadow = 0;
    m_divisions = 510;
    m_rotation_steps = 24;
    m_spacing = 0.05F;
    m_angle = fpi()/4;
    m_scale = 1;
    m_offset = 0;
    m_strip_width = 0;
    m_visible = true;
    m_bar_offset = 0.25F;
    m_bar_width = 0.5F;  
    m_editable = false;
    m_automated = true;
    m_options = "";
    m_color_mapping = "";
    m_enforced = false;
    m_translation = vec3f(0,0,0);
    m_front_face = winding_ccw;
    m_hjust = left;
    m_vjust = bottom;
  }

  std::string tos() const{
    char ss[23 * 32];
#ifdef WIN32
    _snprintf(ss,sizeof(ss),
#else
    ::snprintf(ss,sizeof(ss),
#endif
"color %g %g %g\n\
highlight_color %g %g %g\n\
back_color %g %g %g\n\
line_width %g\n\
marker_size %g\n\
font_size %g\n\
line_pattern %x\n\
multi_node_limit %d\n\
transparency %g\n\
back_transparency %g\n\
back_shadow %g\n\
divisions %d\n\
rotation_steps %d\n\
angle %g\n\
scale %g\n\
offset %g\n\
strip_width %g\n\
spacing %g\n\
bar_offset %g\n\
bar_width %g\n\
translation %g %g %g"
    ,m_color[0],m_color[1],m_color[2]
    ,m_highlight_color[0],m_highlight_color[1],m_highlight_color[2]
    ,m_back_color[0],m_back_color[1],m_back_color[2]
    ,m_line_width
    ,m_marker_size
    ,m_font_size
    ,m_line_pattern
    ,m_multi_node_limit
    ,m_transparency
    ,m_back_transparency
    ,m_back_shadow
    ,m_divisions
    ,m_rotation_steps
    ,m_angle
    ,m_scale
    ,m_offset
    ,m_strip_width
    ,m_spacing
    ,m_bar_offset
    ,m_bar_width
    ,m_translation[0],m_translation[1],m_translation[2]);
    
    std::string lf("\n");
    std::string s(ss);  

    s += lf;  
    s += "smoothing ";
    s += (m_smoothing?"true":"false");

    s += lf;  
    s += "hinting ";
    s += (m_hinting?"true":"false");

    s += lf;  
    s += "enforced ";
    s += (m_enforced?"true":"false");

    s += lf;  
    s += "visible ";
    s += (m_visible?"true":"false");

    s += lf;  
    s += "editable ";
    s += (m_editable?"true":"false");

    s += lf;  
    s += "automated ";
    s += (m_automated?"true":"false");

    s += lf;  
    s += "marker_style ";
    s += smarker_style(m_marker_style);

    s += lf;  
    s += "area_style ";
    s += sarea_style(m_area_style);

    s += lf;
    s += "modeling ";
    s += m_modeling ;

    s += lf;
    s += "light_model ";
    s += m_light_model;

    s += lf;
    s += "tick_modeling ";
    s += m_tick_modeling;

    s += lf;
    s += "encoding ";
    s += m_encoding;

    s += lf;
    s += "cut ";
    s += m_cut;

    s += lf;
    s += "painting ";
    s += spainting_policy(m_painting);

    s += lf;
    s += "hatching ";
    s += shatching_policy(m_hatching);

    s += lf;
    s += "projection ";
    s += sprojection_type(m_projection);

    s += lf;
    s += "font ";
    s += m_font;

    s += lf;
    s += "options ";
    s += m_options;

    s += lf;
    s += "color_mapping ";
    s += m_color_mapping;

    s += lf;
    s += "front_face ";
    s += (m_front_face==winding_ccw?"ccw":"cw");

    s += lf;  
    s += "hjust ";
    s += shjust(m_hjust);

    s += lf;  
    s += "vjust ";
    s += svjust(m_vjust);

    return s;
  }

  void color(const colorf& a_v){m_color = a_v;}
  colorf color() const {return m_color;}

  void highlight_color(const colorf& a_v){m_highlight_color = a_v;}
  colorf highlight_color() const {return m_highlight_color;}

  void back_color(const colorf& a_v){m_back_color = a_v;}
  colorf back_color() const {return m_back_color;}

  void line_width(float a_v){m_line_width = a_v;}
  float line_width() const {return m_line_width;}

  float transparency() const {return m_transparency;}
  void transparency(float a_v) {m_transparency = a_v;}

  float back_transparency() const {return m_back_transparency;}
  void back_transparency(float a_v) {m_back_transparency = a_v;}

  float back_shadow() const {return m_back_shadow;}
  void back_shadow(float a_v) {m_back_shadow = a_v;}

  void marker_style(sg::marker_style a_v){m_marker_style = a_v;}
  sg::marker_style marker_style() const {return m_marker_style;}

  void marker_size(float a_v){m_marker_size = a_v;}
  float marker_size() const {return m_marker_size;}

  void font_size(float a_v){m_font_size = a_v;}
  float font_size() const {return m_font_size;}

  void area_style(sg::area_style a_v){m_area_style = a_v;}
  sg::area_style area_style() const {return m_area_style;}

  void modeling(const std::string& a_v){m_modeling  = a_v;}
  const std::string& modeling() const {return m_modeling ;}

  void light_model(const std::string& a_v){m_light_model = a_v;}
  const std::string& light_model() const {return m_light_model;}

  void tick_modeling(const std::string& a_v){m_tick_modeling = a_v;}
  const std::string& tick_modeling() const {return m_tick_modeling;}

  void encoding(const std::string& a_v){m_encoding = a_v;}
  const std::string& encoding() const {return m_encoding;}

  void smoothing(bool a_v){m_smoothing = a_v;}
  bool smoothing() const {return m_smoothing;}

  void hinting(bool a_v){m_hinting = a_v;}
  bool hinting() const {return m_hinting;}

  sg::painting_policy painting() const {return m_painting;}
  void painting(sg::painting_policy a_v){m_painting = a_v;}

  sg::hatching_policy hatching() const {return m_hatching;}
  void hatching(sg::hatching_policy a_v) {m_hatching = a_v;}

  sg::projection_type projection() const {return m_projection;}
  void projection(sg::projection_type a_v){m_projection = a_v;}

  void line_pattern(lpat a_v){m_line_pattern = a_v;}
  lpat line_pattern() const {return m_line_pattern;}

  void font(const std::string& a_v){m_font = a_v;}
  const std::string& font() const {return m_font;}

  void divisions(int a_v){m_divisions = a_v;}
  int divisions() const {return m_divisions;}

  void rotation_steps(unsigned int a_v){m_rotation_steps = a_v;}
  unsigned int rotation_steps() const {return m_rotation_steps;}

  void offset(float a_v){m_offset = a_v;}
  float offset() const {return m_offset;}

  void strip_width(float a_v){m_strip_width = a_v;}
  float strip_width() const {return m_strip_width;}

  void angle(float a_v){m_angle = a_v;}
  float angle() const {return m_angle;}

  void scale(float a_v){m_scale = a_v;}
  float scale() const {return m_scale;}

  void bar_offset(float a_v){m_bar_offset = a_v;}
  float bar_offset() const {return m_bar_offset;}

  void bar_width(float a_v){m_bar_width = a_v;}
  float bar_width() const {return m_bar_width;}

  void multi_node_limit(int a_v){m_multi_node_limit = a_v;}
  int multi_node_limit() const {return m_multi_node_limit;}

  void spacing(float a_v){m_spacing = a_v;}
  float spacing() const {return m_spacing;}

  void visible(bool a_v){m_visible = a_v;}
  bool visible() const{return m_visible;}

  void editable(bool a_v){m_editable = a_v;}
  bool editable() const{return m_editable;}

  void automated(bool a_v){m_automated = a_v;}
  bool automated() const{return m_automated;}

  void cut(const std::string& a_v){m_cut = a_v;}
  const std::string& cut() const {return m_cut;}

  void options(const std::string& a_v){m_options = a_v;}
  const std::string& options() const{return m_options;}

  void color_mapping(const std::string& a_v){m_color_mapping = a_v;}
  const std::string& color_mapping() const{return m_color_mapping;}

  void enforced(bool a_v){m_enforced = a_v;}
  bool enforced() const{return m_enforced;}

  void translation(const vec3f& a_v){m_translation = a_v;}
  vec3f translation() const {return m_translation;}

  void front_face(winding_type a_v){m_front_face = a_v;}
  winding_type front_face() const {return m_front_face;}

  void hjust(sg::hjust a_v){m_hjust = a_v;}
  sg::hjust hjust() const {return m_hjust;}

  void vjust(sg::vjust a_v){m_vjust = a_v;}
  sg::vjust vjust() const {return m_vjust;}
public:
  static void hls_to_rgb(float hue, float light, float satur,
                                float &r, float &g, float &b){
    // taken from ROOT/TColor.
    // Static method to compute RGB from HLS. The l and s are between [0,1]
    // and h is between [0,360]. The returned r,g,b triplet is between [0,1].

    float rh, rl, rs, rm1, rm2;
    rh = rl = rs = 0;
    if (hue   > 0) rh = hue;   if (rh > 360) rh = 360;
    if (light > 0) rl = light; if (rl > 1)   rl = 1;
    if (satur > 0) rs = satur; if (rs > 1)   rs = 1;
  
    if (rl <= 0.5F) {
      rm2 = rl*(1 + rs);
    } else {
      rm2 = rl + rs - rl*rs;
    }
    rm1 = 2*rl - rm2;

    if (!rs) { r = rl; g = rl; b = rl; return; }
    r = hls_to_rgb2(rm1, rm2, rh+120);
    g = hls_to_rgb2(rm1, rm2, rh);
    b = hls_to_rgb2(rm1, rm2, rh-120);
  }

  static bool scolor(const cmaps_t& a_cmaps,
                            const std::string& a_s,colorf& a_col){
    //NOTE : if ret false, we do not set a_col to something.

    std::string::size_type pos_slash = a_s.rfind('/');
    if(pos_slash!=std::string::npos) { //<cmap>/<color name>
      std::string cmap = a_s.substr(0,pos_slash);
      std::string cnam = a_s.substr(pos_slash+1,a_s.size()-(pos_slash+1));
      typedef inlib::sg::style_colormap cmap_t;
      cmaps_t::const_iterator it = a_cmaps.find(cmap);
      if(it==a_cmaps.end()) return false;
      return (*it).second.get_color(cnam,a_col);
      
    } else {

    if( (a_s.size()==7) && (a_s[0]=='#') ) {
      // #RRGGBB format :
      //  1 3 5
      unsigned long rr,gg,bb;
  
     {std::string s("0x");
      s += a_s.substr(1,2);
      if(!to_ulong(s,rr)) return false;}
  
     {std::string s("0x");
      s += a_s.substr(3,2);
      if(!to_ulong(s,gg)) return false;}
  
     {std::string s("0x");
      s += a_s.substr(5,2);
      if(!to_ulong(s,bb)) return false;}
  
      a_col = colorf(((float)rr)/255,((float)gg)/255,((float)bb)/255);
      return true;
    } 
  
    // Look if three floats :
   {std::vector<std::string> words;
    inlib::words(a_s," ",false,words);
    if(words.size()==3) {
      std::string& word_0 = words[0];
      std::string& word_1 = words[1];
      std::string& word_2 = words[2];
      float r,g,b;
      if( inlib::to<float>(word_0,r) &&
          inlib::to<float>(word_1,g) &&
          inlib::to<float>(word_2,b) ){
        a_col = colorf(r,g,b);
        return true;
      }
    }}

   {float r,g,b;
    if(inlib::colorf::to(a_s,r,g,b))  { //still use that ? cmap "default" ?
      a_col = colorf(r,g,b);
      return true;
    }}

    }
  
    return false;
  }

  static bool scolor(const colorf& a_col,std::string& a_s){
    char s[256];
#ifdef WIN32
    _snprintf(s,sizeof(s),"%g %g %g",a_col[0],a_col[1],a_col[2]);
#else
    ::snprintf(s,sizeof(s),"%g %g %g",a_col[0],a_col[1],a_col[2]);
#endif
    a_s = s;
    return true;
  }

private:
  typedef struct {char string[32];sg::hjust value;} hjust_rec;
  static const hjust_rec* hjust_recs(unsigned int& a_num){
    static const hjust_rec list[] = { //read only static, then ok.
      {"left",     sg::left},
      {"center",   sg::center},
      {"right",    sg::right}
    };  
    a_num = sizeof(list)/sizeof(list[0]);
    return list;
  }
public:
  static bool shjust(const std::string& a_s,sg::hjust& a_v){
    unsigned int number;
    const hjust_rec* list = hjust_recs(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_s==list[count].string) {
        a_v = list[count].value;
        return true;
      }
    }
    a_v = sg::left;
    return false;
  }
  static const char* shjust(sg::hjust a_v){
    unsigned int number;
    const hjust_rec* list = hjust_recs(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_v==list[count].value) return list[count].string;
    }
    return 0;
  }

private:
  typedef struct {char string[32];sg::vjust value;} vjust_rec;
  static const vjust_rec* vjust_recs(unsigned int& a_num){
    static const vjust_rec list[] = { //read only static, then ok.
      {"bottom",   sg::bottom},
      {"middle",   sg::middle},
      {"top",      sg::top}
    };  
    a_num = sizeof(list)/sizeof(list[0]);
    return list;
  }
public:
  static bool svjust(const std::string& a_s,sg::vjust& a_v){
    unsigned int number;
    const vjust_rec* list = vjust_recs(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_s==list[count].string) {
        a_v = list[count].value;
        return true;
      }
    }
    a_v = sg::bottom;
    return false;
  }
  static const char* svjust(sg::vjust a_v){
    unsigned int number;
    const vjust_rec* list = vjust_recs(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_v==list[count].value) return list[count].string;
    }
    return 0;
  }

private:
  typedef struct {char string[32];sg::marker_style value;} MarkerStyle;
  static const MarkerStyle* getMarkerStyleList(unsigned int& a_num){
    static const MarkerStyle list[] = { //read only static, then ok.
      {"dot",         marker_dot},
      {"plus",        marker_plus},
      {"asterisk",    marker_asterisk},
      {"cross",       marker_cross},
      {"star",        marker_star},
      {"circle_line",         marker_circle_line},
      {"circle_filled",       marker_circle_filled},
      {"triangle_up_line",    marker_triangle_up_line},
      {"triangle_up_filled",  marker_triangle_up_filled},
      {"triangle_down_line",  marker_triangle_down_line},
      {"triangle_down_filled",marker_triangle_down_filled},
      {"david_star_line",     marker_david_star_line},
      {"david_star_filled",   marker_david_star_filled},
      {"swiss_cross_line",    marker_swiss_cross_line},
      {"swiss_cross_filled",  marker_swiss_cross_filled},
      {"diamond_line",        marker_diamond_line},
      {"diamond_filled",      marker_diamond_filled},
      {"square_line",         marker_square_line},
      {"square_filled",       marker_square_filled},
      {"penta_star_line",     marker_penta_star_line},
      {"penta_star_filled",   marker_penta_star_filled},
    };  
    a_num = sizeof(list)/sizeof(list[0]);
    return list;
  }
public:
  static bool smarker_style(const std::string& a_s,
                                   sg::marker_style& a_v){
    unsigned int number;
    const MarkerStyle* list = getMarkerStyleList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_s==list[count].string) {
        a_v = list[count].value;
        return true;
      }
    }
    a_v = marker_dot;
    return false;
  }
  static const char* smarker_style(sg::marker_style a_v){
    unsigned int number;
    const MarkerStyle* list = getMarkerStyleList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_v==list[count].value) return list[count].string;
    }
    return 0;
  }

private:
  typedef struct {char string[16];sg::area_style value;} AreaStyle;
  static const AreaStyle* getAreaStyleList(unsigned int& a_num){
    static const AreaStyle list[] = { //read only static, then ok.
      {"solid",         area_solid},
      {"hatched",       area_hatched},
      {"checker",       area_checker},
      {"edged",         area_edged}
    };  
    a_num = sizeof(list)/sizeof(list[0]);
    return list;
  }
public:
  static bool sarea_style(const std::string& a_s,sg::area_style& a_v){
    unsigned int number;
    const AreaStyle* list = getAreaStyleList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_s==list[count].string) {
        a_v = list[count].value;
        return true;  
      }
    }
    a_v = area_solid;
    return false;
  }
  static const char* sarea_style(sg::area_style a_v){
    unsigned int number;
    const AreaStyle* list = getAreaStyleList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_v==list[count].value) return list[count].string;
    }
    return 0;
  }

private:
  typedef struct {char string[20];sg::painting_policy value;} PaintingPolicy;
  static const PaintingPolicy* getPaintingPolicyList(unsigned int& a_num){
    static const PaintingPolicy list[] = { //read only static, then ok.
      {"uniform",      painting_uniform},
      {"by_value",     painting_by_value},
      {"by_level",     painting_by_level},
      {"grey_scale",   painting_grey_scale},
      {"violet_to_red",painting_violet_to_red},
      {"grey_scale_inverse",painting_grey_scale_inverse}
    };  
    a_num = sizeof(list)/sizeof(list[0]);
    return list;
  }
public:
  static bool spainting_policy(const std::string& a_s,
                                      sg::painting_policy& a_v){
    unsigned int number;
    const PaintingPolicy* list = getPaintingPolicyList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_s==list[count].string) {
        a_v = list[count].value;
        return true;
      }
    }
    a_v = painting_uniform;
    return false;
  }
  static const char* spainting_policy(sg::painting_policy a_v){
    unsigned int number;
    const PaintingPolicy* list = getPaintingPolicyList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_v==list[count].value) return list[count].string;
    }
    return 0;
  }


private:
  typedef struct {char string[16];sg::hatching_policy value;} HatchingPolicy;
  static const HatchingPolicy* getHatchingPolicyList(unsigned int& a_num){
    static const HatchingPolicy list[] = { //read only static, then ok.
      {"none",           hatching_none},
      {"right",          hatching_right},
      {"left",           hatching_left},
      {"left_and_right", hatching_left_and_right}
    };  
    a_num = sizeof(list)/sizeof(list[0]);
    return list;
  }
public:
  static bool shatching_policy(const std::string& a_s,
                                      sg::hatching_policy& a_v){
    unsigned int number;
    const HatchingPolicy* list = getHatchingPolicyList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_s==list[count].string) {
        a_v = list[count].value;
        return true;
      }
    }
    a_v = hatching_none;
    return false;
  }

  static const char* shatching_policy(sg::hatching_policy a_v){
    unsigned int number;
    const HatchingPolicy* list = getHatchingPolicyList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_v==list[count].value) return list[count].string;
    }
    return 0;
  }

private:
  typedef struct {char string[16];sg::projection_type value;} ProjectionType;
  static const ProjectionType* getProjectionTypeList(unsigned int& a_num){
    static const ProjectionType list[] = { //read only static, then ok.
      {"none",     projection_none},
      {"rz",       projection_rz},
      {"phiz",     projection_phiz},
      {"zr",       projection_zr},
      {"zphi",     projection_zphi}
    };  
    a_num = sizeof(list)/sizeof(list[0]);
    return list;
  }
public:
  static bool sprojection_type(const std::string& a_s,
                                      sg::projection_type& a_v){
    unsigned int number;
    const ProjectionType* list = getProjectionTypeList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_s==list[count].string) {
        a_v = list[count].value;
        return true;
      }
    }
    a_v = projection_none;
    return false;
  }
  static const char* sprojection_type(sg::projection_type a_v){
    unsigned int number;
    const ProjectionType* list = getProjectionTypeList(number);
    for(unsigned int count=0;count<number;count++) {
      if(a_v==list[count].value) return list[count].string;
    }
    return 0;
  }

  static bool sline_pattern(const std::string& a_s,lpat& aPattern){
    if(a_s=="solid") {
      aPattern = line_solid;
    } else if(a_s=="dashed") {
      aPattern = line_dashed;
    } else if(a_s=="dotted") {
      aPattern = line_dotted;
    } else if(a_s=="dash_dotted") {
      aPattern = line_dash_dotted;
    } else {
      aPattern = line_solid;
      return false;
    }
    return true;
  }

  
  bool parse(std::ostream& a_out,const cmaps_t& a_cmaps,
                    const std::string& a_s){
    // a_s = list of "name value" separated by \n
    //::printf("debug : style_parser::parse : \"%s\"\n",a_s.c_str());
    std::vector<std::string> lines;
    get_lines(a_s,lines);

    std::vector<std::string>::const_iterator it;
    for(it=lines.begin();it!=lines.end();++it) {
      const std::string& line = *it;
      if(line.empty()) continue;
      if(line=="reset") {
        reset();
        continue;
      }
      std::vector<std::string> words;
      inlib::words(line," ",false,words);
      unsigned int wordn = words.size();
      if(!wordn) {
        a_out << "style_parser::parse :"
              << " in " << inlib::sout(a_s)
              << " : " << inlib::sout(line)
              << " has a bad word count (at least two expected)."
              << std::endl;
        return false;
      }
      const std::string& word0 = words[0];
      if(word0=="color") {
        if(wordn==2) {
          const std::string& word1 = words[1];
          if(!scolor(a_cmaps,word1,m_color)) {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(word1)
                  << " not a color."
                  << std::endl;
            return false;
          }
        } else if (wordn==4) {
          const std::string& rs = words[1];
          float r;
          if(!inlib::to<float>(rs,r))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(rs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          const std::string& gs = words[2];
          float g;
          if(!inlib::to<float>(gs,g))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(gs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          const std::string& bs = words[3];
          float b;
          if(!inlib::to<float>(bs,b))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(bs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          m_color.set_value(r,g,b);
        } else {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(line)
                << " has a bad word count (two or four expected)."
                << std::endl;
          return false;
        }

      } else if(word0=="highlight_color") {
        if(wordn==2) {
          const std::string& word1 = words[1];
          if(!scolor(a_cmaps,word1,m_highlight_color)) {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(word1)
                  << " not a color."
                  << std::endl;
            return false;
          }
        } else if (wordn==4) {
          const std::string& rs = words[1];
          float r;
          if(!inlib::to<float>(rs,r))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(rs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          const std::string& gs = words[2];
          float g;
          if(!inlib::to<float>(gs,g))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(gs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          const std::string& bs = words[3];
          float b;
          if(!inlib::to<float>(bs,b))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(bs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          m_highlight_color.set_value(r,g,b);
        } else {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(line)
                << " has a bad word count (two or four expected)."
                << std::endl;
          return false;
        }

      } else if(word0=="back_color") {
        if(wordn==2) {
          const std::string& word1 = words[1];
          if(!scolor(a_cmaps,word1,m_back_color)) {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(word1)
                  << " not a color."
                  << std::endl;
            return false;
          }
        } else if (wordn==4) {
          const std::string& rs = words[1];
          float r;
          if(!inlib::to<float>(rs,r))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(rs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          const std::string& gs = words[2];
          float g;
          if(!inlib::to<float>(gs,g))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(gs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          const std::string& bs = words[3];
          float b;
          if(!inlib::to<float>(bs,b))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(bs)
                  << " not a number."
                  << std::endl;
            return false;
          }
          m_back_color.set_value(r,g,b);
        } else {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(line)
                << " has a bad word count (two or four expected)."
                << std::endl;
          return false;
        }

      } else if( (word0=="line_pattern") || (word0=="line_pattern") ) {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        const std::string& word1 = words[1];
        unsigned long ul;
        if(!sline_pattern(word1,m_line_pattern)) {
          if(!to_ulong(word1,ul)) {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(word1)
                  << " not a line pattern."
                  << std::endl;
            return false;
          }
          m_line_pattern = (lpat)ul;
        }
      } else if(word0=="marker_style") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        const std::string& word1 = words[1];
        if(!smarker_style(word1,m_marker_style)) {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(word1)
                << " not a marker_style."
                << std::endl;
          return false;
        }
      } else if(word0=="area_style") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        const std::string& word1 = words[1];
        if(!sarea_style(word1,m_area_style)) {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(word1)
                << " not a area_style."
                << std::endl;
          return false;
        }
      } else if(word0=="modeling") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        m_modeling  = words[1];
      } else if(word0=="light_model") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        m_light_model = words[1];
      } else if(word0=="tick_modeling") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        m_tick_modeling = words[1];
      } else if(word0=="encoding") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        m_encoding = words[1];
      } else if(word0=="smoothing") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        bool value;
        if(!check_bool(words[1],a_s,a_out,value)) return false;
        m_smoothing = value;
      } else if(word0=="hinting") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        bool value;
        if(!check_bool(words[1],a_s,a_out,value)) return false;
        m_hinting = value;
      } else if(word0=="enforced") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        bool value;
        if(!check_bool(words[1],a_s,a_out,value)) return false;
        m_enforced = value;
      } else if(word0=="cut") {
        m_cut = "";
        for(unsigned int wordi=1;wordi<wordn;wordi++) {
          if(wordi!=1) m_cut += " ";
          m_cut += words[wordi];
        }
      } else if(word0=="options") {
        m_options = "";
        for(unsigned int wordi=1;wordi<wordn;wordi++) {
          if(wordi!=1) m_options += " ";
          m_options += words[wordi];
        }
      } else if(word0=="color_mapping") {
        m_color_mapping = "";
        for(unsigned int wordi=1;wordi<wordn;wordi++) {
          if(wordi!=1) m_color_mapping += " ";
          m_color_mapping += words[wordi];
        }
      } else if(word0=="painting") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        if(!spainting_policy(words[1],m_painting)) {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(words[1])
                << " not a painting_policy."
                << std::endl;
          return false;
        }
      } else if(word0=="hatching") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        if(!shatching_policy(words[1],m_hatching)) {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(words[1])
                << " not a hatching_policy."
                << std::endl;
          return false;
        }
      } else if(word0=="projection") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        if(!sprojection_type(words[1],m_projection)) {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(words[1])
                << " not a projection_type."
                << std::endl;
          return false;
        }   
      } else if(word0=="font") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        font(words[1]);
      } else if(word0=="line_width") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_line_width = value;
      } else if(word0=="marker_size") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_marker_size = value;
      } else if(word0=="font_size") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_font_size = value;
      } else if(word0=="transparency") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        if(value<0.F) value = 0.F;
        m_transparency = value;
      } else if(word0=="back_transparency") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        if(value<0.F) value = 0.F;
        m_back_transparency = value;
      } else if(word0=="back_shadow") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        if(value<0.F) value = 0.F;
        m_back_shadow = value;
      } else if(word0=="multi_node_limit") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        int value;
        if(!check_int(words[1],a_s,a_out,value)) return false;
        m_multi_node_limit = value;
      } else if(word0=="divisions") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        int value;
        if(!check_int(words[1],a_s,a_out,value)) return false;
        m_divisions = value;
      } else if(word0=="rotation_steps") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        unsigned int value;
        if(!check_uint(words[1],a_s,a_out,value)) return false;
        m_rotation_steps = value;
      } else if(word0=="angle") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_angle = value;
      } else if(word0=="scale") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_scale = value;
      } else if(word0=="offset") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_offset = value;
      } else if(word0=="strip_width") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_strip_width = value;
      } else if(word0=="spacing") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_spacing = value;
      } else if(word0=="visible") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        bool value;
        if(!check_bool(words[1],a_s,a_out,value)) return false;
        m_visible = value;
      } else if(word0=="editable") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        bool value;
        if(!check_bool(words[1],a_s,a_out,value)) return false;
        m_editable = value;
      } else if(word0=="automated") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        bool value;
        if(!check_bool(words[1],a_s,a_out,value)) return false;
        m_automated = value;
      } else if(word0=="bar_offset") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_bar_offset = value;
      } else if(word0=="bar_width") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        float value;
        if(!check_float(words[1],a_s,a_out,value)) return false;
        m_bar_width = value;

      } else if(word0=="translation") {
        if (wordn==4) {
          const std::string& sx = words[1];
          float x;
          if(!inlib::to<float>(sx,x))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(sx)
                  << " not a number."
                  << std::endl;
            return false;
          }
          const std::string& sy = words[2];
          float y;
          if(!inlib::to<float>(sy,y))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(sy)
                  << " not a number."
                  << std::endl;
            return false;
          }
          const std::string& sz = words[3];
          float z;
          if(!inlib::to<float>(sz,z))  {
            a_out << "style_parser::parse :"
                  << " in " << inlib::sout(a_s)
                  << " : " << inlib::sout(sz)
                  << " not a number."
                  << std::endl;
            return false;
          }
          m_translation.set_value(x,y,z);
        } else {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " has a bad word count (four expected)."
                << std::endl;
          return false;
        }

      } else if(word0=="front_face") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        const std::string& word1 = words[1];
        if(word1=="ccw") {
          m_front_face = winding_ccw;
        } else if(word1=="cw") {
          m_front_face = winding_cw;
        } else { //ccw
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(word1)
                << " not a winding type."
                << std::endl;
          return false;
        }

      } else if(word0=="hjust") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        const std::string& word1 = words[1];
        if(!shjust(word1,m_hjust)) {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(word1)
                << " not a hjust."
                << std::endl;
          return false;
        }

      } else if(word0=="vjust") {
        if(!check_2(wordn,a_s,line,a_out)) return false;
        const std::string& word1 = words[1];
        if(!svjust(word1,m_vjust)) {
          a_out << "style_parser::parse :"
                << " in " << inlib::sout(a_s)
                << " : " << inlib::sout(word1)
                << " not a vjust."
                << std::endl;
          return false;
        }

      } else {
        a_out << "style_parser::parse :"
              << " in " << inlib::sout(a_s)
              << " : " << inlib::sout(word0)
              << " bad option."
              << std::endl;
        return false;
      }      
    } 
    return true;
  }

private:
  bool check_2(unsigned int a_n,const std::string& a_s,const std::string& a_line,std::ostream& a_out) {
    if(a_n!=2) {
      a_out << "style_parser::parse :"
            << " in " << inlib::sout(a_s)
            << " : " << inlib::sout(a_line)
            << " has a bad word count (two expected)."
            << std::endl;
      return false;
    }
    return true;
  }

  bool check_bool(const std::string& a_w,const std::string& a_s,std::ostream& a_out,bool& a_v) {
    if(!inlib::to(a_w,a_v)){
      a_out << "style_parser::parse :"
            << " in " << inlib::sout(a_s)
            << " : " << inlib::sout(a_w)
            << " not a boolean."
            << std::endl;
      return false;
    }
    return true;
  }

  bool check_int(const std::string& a_w,const std::string& a_s,std::ostream& a_out,int& a_v) {
    if(!inlib::to<int>(a_w,a_v)){
      a_out << "style_parser::parse :"
            << " in " << inlib::sout(a_s)
            << " : " << inlib::sout(a_w)
            << " not an int."
            << std::endl;
      return false;
    }
    return true;
  }
  bool check_uint(const std::string& a_w,const std::string& a_s,std::ostream& a_out,unsigned int& a_v) {
    if(!inlib::to<unsigned int>(a_w,a_v)){
      a_out << "style_parser::parse :"
            << " in " << inlib::sout(a_s)
            << " : " << inlib::sout(a_w)
            << " not an unsigned int."
            << std::endl;
      return false;
    }
    return true;
  }
  bool check_float(const std::string& a_w,const std::string& a_s,std::ostream& a_out,float& a_v) {
    if(!inlib::to<float>(a_w,a_v)){
      a_out << "style_parser::parse :"
            << " in " << inlib::sout(a_s)
            << " : " << inlib::sout(a_w)
            << " not a float."
            << std::endl;
      return false;
    }
    return true;
  }

  static float hls_to_rgb2(float rn1, float rn2, float huei) {
    // taken from ROOT/TColor.
    float hue = huei;
    if (hue > 360) hue = hue - 360;
    if (hue < 0)   hue = hue + 360;
    if (hue < 60 ) return rn1 + (rn2-rn1)*hue/60;
    if (hue < 180) return rn2;
    if (hue < 240) return rn1 + (rn2-rn1)*(240-hue)/60;
    return rn1;
  }
  static bool to_ulong(const std::string& a_s,unsigned long& a_v){
    a_v = 0L;
    if(::sscanf(a_s.c_str(),"%lx",&a_v)!=1) {
      if(::sscanf(a_s.c_str(),"%lu",&a_v)!=1) {
        a_v = 0L;
        return false;
      }
    }
    return true;
  }
  static void get_lines(const std::string& a_string,
                               std::vector<std::string>& a_lines){
    // a_string is a list separated by "\n" or "\\n".
    // For "xxx\n\nxxx", {"xxx","","xxx"} will be created.
    // WARNING : if a_string is a Windows file name, it may 
    //  contains a \n which is not a delimiter ; like ..\data\ntuples.hbook.
    a_lines.clear();
    int length = a_string.length();
    if(length<=0) return;
    char* cstring = inlib::str_dup(a_string.c_str());
    if(!cstring) return;
    int pos = 0;
    length++;
    for(int count=0;count<length;count++) {
      if( (cstring[count]=='\n') || 
          (cstring[count]=='\0') || 
          ( (cstring[count]=='\\') && (cstring[count+1]=='n') ) ) { 
        char shift_one = (cstring[count]=='\n' ? 1 : 0);
        cstring[count] = '\0';
        a_lines.push_back(cstring+pos);
        if(shift_one==1) {
          pos = count+1;
        } else {
          pos = count+2;
          count++;
        }
      }
    }
    inlib::str_del(cstring);
  }
private: 
  colorf m_color;
  colorf m_highlight_color;
  colorf m_back_color;
  float m_line_width;
  float m_marker_size;
  float m_font_size;
  lpat m_line_pattern;
  sg::marker_style m_marker_style;
  sg::area_style m_area_style;
  std::string m_modeling ; 
  std::string m_light_model; 
  std::string m_tick_modeling; 
  std::string m_encoding; 
  bool m_smoothing;
  bool m_hinting;
  std::string m_cut;
  sg::painting_policy m_painting;
  sg::hatching_policy m_hatching;
  sg::projection_type m_projection;
  std::string m_font;
  int m_multi_node_limit; //could be no_limit = -1.
  int m_divisions;
  unsigned int m_rotation_steps;
  float m_transparency;
  float m_back_transparency;
  float m_back_shadow;
  float m_spacing;
  float m_angle;
  float m_scale;
  float m_offset;
  float m_strip_width;
  bool m_visible;
  float m_bar_offset;
  float m_bar_width;
  bool m_editable;
  bool m_automated;
  std::string m_options;
  std::string m_color_mapping;
  bool m_enforced;
  vec3f m_translation;
  winding_type m_front_face;
  sg::hjust m_hjust;
  sg::vjust m_vjust;
};

}}

#endif