@sutton-signwriting/font-ttf/fsw/fsw.mjs

/**
* Sutton SignWriting TrueType Font Module v1.1.0 (https://github.com/sutton-signwriting/font-ttf)
* Author: Steve Slevinski  (https://SteveSlevinski.me)
* fsw.mjs is released under the MIT License.
*/

/**
* Sutton SignWriting Core Module v1.1.0 (https://github.com/sutton-signwriting/core)
* Author: Steve Slevinski  (https://SteveSlevinski.me)
* convert.mjs is released under the MIT License.
*/
/**
 * Function to convert an FSW symbol key to a 16-bit ID
 * @function convert.key2id
 * @param {string} key - FSW symbol key
 * @returns {number} 16-bit ID
 * @example
 * convert.key2id('S10000')
 * 
 * return 1
 */


const key2id = key => 1 + (parseInt(key.slice(1, 4), 16) - 256) * 96 + parseInt(key.slice(4, 5), 16) * 16 + parseInt(key.slice(5, 6), 16);
/* support ongoing development on https://patreon.com/signwriting */

let sizes = {};
const zoom = 2;
const bound = 76 * zoom;
const canvaser = document.createElement("canvas");
canvaser.width = bound;
canvaser.height = bound;
const context = canvaser.getContext("2d");
/**
 * Function that returns the size of a symbol using an id
 * @function font.symbolSize
 * @param {number} id - a 16-bit number of a symbol
 * @example
 * font.symbolSize(1)
 * 
 * return [15,30]
 */

const symbolSize = function (id) {
  if (id in sizes) {
    return [...sizes[id]];
  }

  context.clearRect(0, 0, bound, bound);
  context.font = 30 * zoom + "px 'SuttonSignWritingLine'";
  context.fillText(String.fromCodePoint(id + 0xF0000), 0, 0);
  const imgData = context.getImageData(0, 0, bound, bound).data;
  let w, h, i, s;

  wloop: for (w = bound - 1; w >= 0; w--) {
    for (h = 0; h < bound; h += 1) {
      for (s = 0; s < 4; s += 1) {
        i = w * 4 + h * 4 * bound + s;

        if (imgData[i]) {
          break wloop;
        }
      }
    }
  }

  var width = w;

  hloop: for (h = bound - 1; h >= 0; h--) {
    for (w = 0; w < width; w += 1) {
      for (s = 0; s < 4; s += 1) {
        i = w * 4 + h * 4 * bound + s;

        if (imgData[i]) {
          break hloop;
        }
      }
    }
  }

  var height = h + 1;
  width = Math.ceil(width / zoom);
  height = Math.ceil(height / zoom); // Rounding error in chrome.  Manual fixes.

  if (14394 == id) {
    width = 19;
  }

  if ([10468, 10480, 10496, 10512, 10500, 10532, 10548, 10862, 10878, 10894, 11058, 11074, 11476, 11488, 11492, 11504, 11508, 11520, 10516, 10910, 10926, 11042, 11082, 10942].includes(id)) {
    width = 20;
  }

  if (31921 == id) {
    width = 22;
  }

  if (38460 == id) {
    width = 23;
  }

  if ([20164, 20212].includes(id)) {
    width = 25;
  }

  if (31894 == id) {
    width = 28;
  }

  if (46698 == id) {
    width = 29;
  }

  if (29606 == id) {
    width = 30;
  }

  if (44855 == id) {
    width = 40;
  }

  if (32667 == id) {
    width = 50;
  }

  if ([11088, 11474, 11490, 11506].includes(id)) {
    height = 20;
  }

  if (6285 == id) {
    height = 21;
  }

  if (40804 == id) {
    height = 31;
  }

  if (41475 == id) {
    height = 36;
  } // Error in chrome.  Manual fix.
  // if (width==0 && height==0) {


  if (width == 0 && height == 0) {
    const sizefix = {
      9: [15, 30],
      10: [21, 30],
      11: [30, 15],
      12: [30, 21],
      13: [15, 30],
      14: [21, 30]
    };

    if (id in sizefix) {
      width = sizefix[id][0];
      height = sizefix[id][1];
    }
  }

  if (width == 0 && height == 0) {
    return undefined;
  }

  sizes[id] = [width, height];
  return [width, height];
};

/**
 * Function that returns the size of a symbol using an FSW symbol key
 * @function fsw.symbolSize
 * @param {string} fsw - an FSW symbol key
 * @example
 * fsw.symbolSize("S10000")
 * 
 * return [15,30]
 */

const symbolSize$1 = function (fsw) {
  return symbolSize(key2id(fsw));
};

/**
 * Function that returns a plane 15 character for a symbol line using an id
 * @function font.symbolLine
 * @param {number} id - a 16-bit number of a symbol
 * @example
 * font.symbolLine(1)
 * 
 * return '󰀁'
 */
const symbolLine = function (id) {
  return String.fromCodePoint(id + 0xF0000);
};
/**
 * Function that returns a plane 16 character for a symbol fill using an id
 * @function font.symbolFill
 * @param {number} id - a 16-bit number of a symbol
 * @example
 * font.symbolFill(1)
 * 
 * return '􀀁'
 */


const symbolFill = function (id) {
  return String.fromCodePoint(id + 0x100000);
};
/**
 * Function that creates two text elements for a symbol using an id
 * @function font.symbolText
 * @param {number} id - a 16-bit number of a symbol
 * @example
 * font.symbolText(1)
 * 
 * return `    <text class="sym-fill" fill="white" style="pointer-events:none;font-family:'SuttonSignWritingFill';font-size:30px;">􀀁</text>
 *     <text class="sym-line" fill="black" style="pointer-events:none;font-family:'SuttonSignWritingLine';font-size:30px;">󰀁</text>`
 */


const symbolText = function (id) {
  return `    <text class="sym-fill" fill="white" style="pointer-events:none;font-family:'SuttonSignWritingFill';font-size:30px;">${symbolFill(id)}</text>
    <text class="sym-line" fill="black" style="pointer-events:none;font-family:'SuttonSignWritingLine';font-size:30px;">${symbolLine(id)}</text>`;
};

/**
 * Function that returns a plane 15 character for a symbol line using an FSW symbol key
 * @function fsw.symbolLine
 * @param {string} fsw - an FSW symbol key
 * @example
 * fsw.symbolLine('S10000')
 * 
 * return '󰀁'
 */

const symbolLine$1 = function (fsw) {
  return symbolLine(key2id(fsw));
};
/**
 * Function that returns a plane 16 character for a symbol fill using an FSW symbol key
 * @function fsw.symbolFill
 * @param {string} fsw - an FSW symbol key
 * @example
 * font.symbolFill('S10000')
 * 
 * return '􀀁'
 */


const symbolFill$1 = function (fsw) {
  return symbolFill(key2id(fsw));
};
/**
 * Function that creates two text elements for a symbol using an FSW symbol key
 * @function fsw.symbolText
 * @param {string} fsw - an FSW symbol key
 * @example
 * fsw.symbolText('S10000')
 * 
 * return `    <text class="sym-fill" fill="white" style="pointer-events:none;font-family:'SuttonSignWritingFill';font-size:30px;">􀀁</text>
 *     <text class="sym-line" fill="black" style="pointer-events:none;font-family:'SuttonSignWritingLine';font-size:30px;">󰀁</text>`
 */


const symbolText$1 = function (fsw) {
  return symbolText(key2id(fsw));
};

/**
* Sutton SignWriting Core Module v1.1.0 (https://github.com/sutton-signwriting/core)
* Author: Steve Slevinski  (https://SteveSlevinski.me)
* style.mjs is released under the MIT License.
*/

/**
 * Object of regular expressions for style strings
 * 
 *   { colorize, colorhex, colorname, padding, zoom, zoomsym, classbase, id, colorbase, color, colors, background, detail, detailsym, classes, full }
 * @alias style.re
 * @type {object}
 */
let re = {
  'colorize': 'C',
  'colorhex': '(?:[0-9a-fA-F]{3}){1,2}',
  'colorname': '[a-zA-Z]+',
  'padding': 'P[0-9]{2}',
  'zoom': 'Z(?:[0-9]+(?:\\.[0-9]+)?|x)',
  'zoomsym': 'Z[0-9]{2},[0-9]+(?:\\.[0-9]+)?(?:,[0-9]{3}x[0-9]{3})?',
  'classbase': '-?[_a-zA-Z][_a-zA-Z0-9-]{0,100}',
  'id': '[a-zA-Z][_a-zA-Z0-9-]{0,100}'
};
re.colorbase = `(?:${re.colorhex}|${re.colorname})`;
re.color = `_${re.colorbase}_`;
re.colors = `_${re.colorbase}(?:,${re.colorbase})?_`;
re.background = `G${re.color}`;
re.detail = `D${re.colors}`;
re.detailsym = `D[0-9]{2}${re.colors}`;
re.classes = `${re.classbase}(?: ${re.classbase})*`;
re.full = `-(${re.colorize})?(${re.padding})?(${re.background})?(${re.detail})?(${re.zoom})?(?:-((?:${re.detailsym})*)((?:${re.zoomsym})*))?(?:-(${re.classes})?!(?:(${re.id})!)?)?`;

const prefixColor = color => {
  const regex = new RegExp(`^${re.colorhex}$`);
  return (regex.test(color) ? '#' : '') + color;
};
/**
 * Function to parse style string to object
 * @function style.parse
 * @param {string} styleString - a style string
 * @returns {object} elements of style string
 * @example
 * style.parse('-CP10G_blue_D_red,Cyan_')
 * 
 * return {
 *  'colorize': true,
 *  'padding': 10,
 *  'background': 'blue',
 *  'detail': ['red', 'Cyan']
 * }
 */


const parse = styleString => {
  const regex = `^${re.full}`;
  const m = typeof styleString === 'string' ? styleString.match(new RegExp(regex)) : [];
  return {
    'colorize': !m[1] ? undefined : !!m[1],
    'padding': !m[2] ? undefined : parseInt(m[2].slice(1)),
    'background': !m[3] ? undefined : prefixColor(m[3].slice(2, -1)),
    'detail': !m[4] ? undefined : m[4].slice(2, -1).split(',').map(prefixColor),
    'zoom': !m[5] ? undefined : m[5] === 'Zx' ? 'x' : parseFloat(m[5].slice(1)),
    'detailsym': !m[6] ? undefined : m[6].match(new RegExp(re.detailsym, 'g')).map(val => {
      const parts = val.split('_');
      const detail = parts[1].split(',').map(prefixColor);
      return {
        'index': parseInt(parts[0].slice(1)),
        'detail': detail
      };
    }),
    'zoomsym': !m[7] ? undefined : m[7].match(new RegExp(re.zoomsym, 'g')).map(val => {
      const parts = val.split(',');
      return {
        'index': parseInt(parts[0].slice(1)),
        'zoom': parseFloat(parts[1]),
        'offset': !parts[2] ? undefined : parts[2].split('x').map(val => parseInt(val) - 500)
      };
    }),
    'classes': !m[8] ? undefined : m[8],
    'id': !m[9] ? undefined : m[9]
  };
};
/* support ongoing development on https://patreon.com/signwriting */

/**
* Sutton SignWriting Core Module v1.1.0 (https://github.com/sutton-signwriting/core)
* Author: Steve Slevinski  (https://SteveSlevinski.me)
* fsw.mjs is released under the MIT License.
*/

/**
 * Object of regular expressions for FSW strings
 * 
 *   { symbol, coord, sort, box, prefix, spatial, signbox, sign, term }
 * @alias fsw.re
 * @type {object}
 */
let re$1 = {
  'symbol': 'S[123][0-9a-f]{2}[0-5][0-9a-f]',
  'coord': '[0-9]{3}x[0-9]{3}',
  'sort': 'A',
  'box': '[BLMR]'
};
re$1.prefix = `(?:${re$1.sort}(?:${re$1.symbol})+)`;
re$1.spatial = `${re$1.symbol}${re$1.coord}`;
re$1.signbox = `${re$1.box}${re$1.coord}(?:${re$1.spatial})*`;
re$1.sign = `${re$1.prefix}?${re$1.signbox}`;
re$1.term = `${re$1.prefix}${re$1.signbox}`;
/**
 * Object of regular expressions for style strings
 * 
 *   { colorize, colorhex, colorname, padding, zoom, zoomsym, classbase, id, colorbase, color, colors, background, detail, detailsym, classes, full }
 * @alias style.re
 * @type {object}
 */

let re$1$1 = {
  'colorize': 'C',
  'colorhex': '(?:[0-9a-fA-F]{3}){1,2}',
  'colorname': '[a-zA-Z]+',
  'padding': 'P[0-9]{2}',
  'zoom': 'Z(?:[0-9]+(?:\\.[0-9]+)?|x)',
  'zoomsym': 'Z[0-9]{2},[0-9]+(?:\\.[0-9]+)?(?:,[0-9]{3}x[0-9]{3})?',
  'classbase': '-?[_a-zA-Z][_a-zA-Z0-9-]{0,100}',
  'id': '[a-zA-Z][_a-zA-Z0-9-]{0,100}'
};
re$1$1.colorbase = `(?:${re$1$1.colorhex}|${re$1$1.colorname})`;
re$1$1.color = `_${re$1$1.colorbase}_`;
re$1$1.colors = `_${re$1$1.colorbase}(?:,${re$1$1.colorbase})?_`;
re$1$1.background = `G${re$1$1.color}`;
re$1$1.detail = `D${re$1$1.colors}`;
re$1$1.detailsym = `D[0-9]{2}${re$1$1.colors}`;
re$1$1.classes = `${re$1$1.classbase}(?: ${re$1$1.classbase})*`;
re$1$1.full = `-(${re$1$1.colorize})?(${re$1$1.padding})?(${re$1$1.background})?(${re$1$1.detail})?(${re$1$1.zoom})?(?:-((?:${re$1$1.detailsym})*)((?:${re$1$1.zoomsym})*))?(?:-(${re$1$1.classes})?!(?:(${re$1$1.id})!)?)?`;
/** The convert module contains functions to convert between Formal SignWriitng in ASCII (FSW) and SignWriting in Unicode (SWU) characters, along with other types of data.
 * [Characters set definitions](https://tools.ietf.org/id/draft-slevinski-formal-signwriting-07.html#rfc.section.2.2)
 * @module convert
 */

/**
 * Function to convert an FSW coordinate string to an array of x,y integers
 * @function convert.fsw2coord
 * @param {string} fswCoord - An FSW coordinate string
 * @returns {number[]} Array of x,y integers
 * @example
 * convert.fsw2coord('500x500')
 * 
 * return [500, 500]
 */

const fsw2coord = fswCoord => fswCoord.split('x').map(num => parseInt(num));

const parse$1 = {
  /**
   * Function to parse an fsw symbol with optional coordinate and style string
   * @function fsw.parse.symbol
   * @param {string} fswSym - an fsw symbol
   * @returns {object} elements of fsw symbol
   * @example
   * fsw.parse.symbol('S10000500x500-C')
   * 
   * return {
   *  'symbol': 'S10000',
   *  'coord': [500, 500],
   *  'style': '-C'
   * }
   */
  symbol: fswSym => {
    const regex = `^(${re$1.symbol})(${re$1.coord})?(${re$1$1.full})?`;
    const symbol = typeof fswSym === 'string' ? fswSym.match(new RegExp(regex)) : undefined;
    return {
      'symbol': symbol ? symbol[1] : undefined,
      'coord': symbol && symbol[2] ? fsw2coord(symbol[2]) : undefined,
      'style': symbol ? symbol[3] : undefined
    };
  },

  /**
   * Function to parse an fsw sign with style string
   * @function fsw.parse.sign
   * @param {string} fswSign - an fsw sign
   * @returns {object} elements of fsw sign
   * @example
   * fsw.parse.sign('AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475-C')
   * 
   * return {
   *  sequence: ['S10011', 'S10019', 'S2e704', 'S2e748'],
   *  box: 'M',
   *  max: [525, 535],
   *  spatials: [
   *    {
   *      symbol: 'S2e748',
   *      coord: [483, 510]
   *    },
   *    {
   *      symbol: 'S10011',
   *      coord: [501, 466]
   *    },
   *    {
   *      symbol: 'S2e704',
   *      coord: [510, 500]
   *    },
   *    {
   *      symbol: 'S10019',
   *      coord: [476, 475]
   *    }
   *  ],
   *  style: '-C'
   * }
   */
  sign: fswSign => {
    const regex = `^(${re$1.prefix})?(${re$1.signbox})(${re$1$1.full})?`;
    const sign = typeof fswSign === 'string' ? fswSign.match(new RegExp(regex)) : undefined;

    if (sign) {
      return {
        'sequence': sign[1] ? sign[1].slice(1).match(/.{6}/g) : undefined,
        'box': sign[2][0],
        'max': fsw2coord(sign[2].slice(1, 8)),
        'spatials': sign[2].length < 9 ? undefined : sign[2].slice(8).match(/(.{13})/g).map(m => {
          return {
            symbol: m.slice(0, 6),
            coord: [parseInt(m.slice(6, 9)), parseInt(m.slice(10, 13))]
          };
        }),
        'style': sign[3]
      };
    } else {
      return {};
    }
  }
};
/**
 * Array of numbers for categories of symbols: hand, movement, dynamics, head, trunk & limb, location, and punctuation.
 * @alias fsw.category
 * @type {array}
 */

const category = [0x100, 0x205, 0x2f7, 0x2ff, 0x36d, 0x37f, 0x387];
/**
 * Object of symbol ranges with starting and ending numbers.
 * 
 *   { all, writing, hand, movement, dynamic, head, hcenter, vcenter, trunk, limb, location, punctuation }
 * @alias fsw.ranges
 * @type {object}
 */

const ranges = {
  'all': [0x100, 0x38b],
  'writing': [0x100, 0x37e],
  'hand': [0x100, 0x204],
  'movement': [0x205, 0x2f6],
  'dynamic': [0x2f7, 0x2fe],
  'head': [0x2ff, 0x36c],
  'hcenter': [0x2ff, 0x36c],
  'vcenter': [0x2ff, 0x375],
  'trunk': [0x36d, 0x375],
  'limb': [0x376, 0x37e],
  'location': [0x37f, 0x386],
  'punctuation': [0x387, 0x38b]
};
/**
 * Array of colors associated with the seven symbol categories.
 * @alias fsw.colors
 * @type {array}
 */


const colors = ['#0000CC', '#CC0000', '#FF0099', '#006600', '#000000', '#884411', '#FF9900'];
/**
 * Function that returns the standardized color for a symbol.
 * @function fsw.colorize
 * @param {string} key - an FSW symbol key
 * @returns {string} name of standardized color for symbol
 * @example
 * fsw.colorize('S10000')
 * 
 * return '#0000CC'
 */

const colorize = key => {
  const parsed = parse$1.symbol(key);
  let color = '#000000';

  if (parsed.symbol) {
    const dec = parseInt(parsed.symbol.slice(1, 4), 16);
    const index = category.findIndex(val => val > dec);
    color = colors[index < 0 ? 6 : index - 1];
  }

  return color;
};
/* support ongoing development on https://patreon.com/signwriting */

/**
 * Function that creates an SVG image from an FSW symbol key with an optional style string
 * @function fsw.symbolSvg
 * @param {string} fswSym - an FSW symbol key with optional style string
 * @example
 * fsw.symbolSvg('S10000')
 * 
 * return `<svg version="1.1" xmlns="http://www.w3.org/2000/svg" width="15" height="30" viewBox="500 500 15 30">
 *   <text font-size="0">S10000</text>
 *   <g transform="translate(500,500)">
 *     <text class="sym-fill" fill="white" style="pointer-events:none;font-family:'SuttonSignWritingFill';font-size:30px;">􀀁</text>
 *     <text class="sym-line" fill="black" style="pointer-events:none;font-family:'SuttonSignWritingLine';font-size:30px;">󰀁</text>
 *   </g>
 * </svg>`
 */

const symbolSvg = fswSym => {
  const parsed = parse$1.symbol(fswSym);
  const blank = '<svg version="1.1" xmlns="http://www.w3.org/2000/svg" width="1" height="1"></svg>';

  if (parsed.symbol) {
    let size = symbolSize$1(parsed.symbol);

    if (size) {
      let styling = parse(parsed.style);
      let line;
      let symSvg = symbolText$1(parsed.symbol);
      symSvg = `  <g transform="translate(500,500)">
${symSvg}
  </g>`;

      if (styling.colorize) {
        line = colorize(parsed.symbol);
      } else if (styling.detail) {
        line = styling.detail[0];
      }

      if (line) {
        symSvg = symSvg.replace(/class="sym-line" fill="black"/, `class="sym-line" fill="${line}"`);
      }

      let fill = styling.detail && styling.detail[1];

      if (fill) {
        symSvg = symSvg.replace(/class="sym-fill" fill="white"/, `class="sym-fill" fill="${fill}"`);
      }

      let x1 = 500;
      let y1 = 500;
      let background = '';

      if (styling.padding) {
        x1 -= styling.padding;
        y1 -= styling.padding;
        size[0] += styling.padding * 2;
        size[1] += styling.padding * 2;
      }

      if (styling.background) {
        background = `\n  <rect x="${x1}" y="${y1}" width="${size[0]}" height="${size[1]}" style="fill:${styling.background};" />`;
      }

      let sizing = '';

      if (styling.zoom != 'x') {
        sizing = ` width="${size[0] * (styling.zoom ? styling.zoom : 1)}" height="${size[1] * (styling.zoom ? styling.zoom : 1)}"`;
      }

      let classes = '';

      if (styling.classes) {
        classes = ` class="${styling.classes}"`;
      }

      let id = '';

      if (styling.id) {
        id = ` id="${styling.id}"`;
      }

      return `<svg${classes}${id} version="1.1" xmlns="http://www.w3.org/2000/svg"${sizing} viewBox="${x1} ${y1} ${size[0]} ${size[1]}">
  <text font-size="0">${fswSym}</text>${background}
${symSvg}
</svg>`;
    }
  }

  return blank;
};

const symbolCanvas = function (fswSym) {
  const parsed = parse$1.symbol(fswSym);

  if (parsed.symbol) {
    let size = symbolSize$1(parsed.symbol);

    if (size) {
      const canvas = document.createElement('canvas');
      const context = canvas.getContext('2d');
      let styling = parse(parsed.style);
      let line = 'black';

      if (styling.colorize) {
        line = colorize(parsed.symbol);
      } else if (styling.detail) {
        line = styling.detail[0];
      }

      let fill = styling.detail && styling.detail[1] || 'white';
      let x1 = 500;
      let x2 = x1 + size[0];
      let y1 = 500;
      let y2 = y1 + size[1];

      if (styling.padding) {
        x1 -= styling.padding;
        y1 -= styling.padding;
        x2 += styling.padding;
        y2 += styling.padding;
      }

      let sizing = 1;

      if (styling.zoom != 'x') {
        sizing = styling.zoom;
      }

      let w = (x2 - x1) * sizing;
      let h = (y2 - y1) * sizing;
      canvas.width = w ? w : 1;
      canvas.height = h ? h : 1;

      if (styling.background) {
        context.rect(0, 0, w, h);
        context.fillStyle = styling.background;
        context.fill();
      }

      context.font = 30 * sizing + "px 'SuttonSignWritingFill'";
      context.fillStyle = fill;
      context.fillText(symbolFill$1(parsed.symbol), (500 - x1) * sizing, (500 - y1) * sizing);
      context.font = 30 * sizing + "px 'SuttonSignWritingLine'";
      context.fillStyle = line;
      context.fillText(symbolLine$1(parsed.symbol), (500 - x1) * sizing, (500 - y1) * sizing);
      return canvas;
    }
  }
};
/**
 * Function that creates a binary PNG image from an FSW symbol key with an optional stle string
 * @function fsw.symbolPng
 * @param {string} fswSym - an FSW symbol key with optional style string
 * @example
 * fsw.symbolPng('S10000')
 * 
 * return 'data:image/png;base64,iVBORw...'
 */


const symbolPng = fswSym => {
  const canvas = symbolCanvas(fswSym);
  const png = canvas.toDataURL("image/png");
  canvas.remove();
  return png;
};

const blank = null;
/**
 * Function that normalizes a symbol with a minimum coordinate for a center of 500,500
 * @function fsw.symbolNormalize
 * @param {string} fswSym - an FSW symbol key with optional coordinate and style string
 * @example
 * fsw.symbolNormalize('S10000-CP10G_green_Z2')
 * 
 * return 'S10000493x485-CP10G_green_Z2'
 */

const symbolNormalize = fswSym => {
  const parsed = parse$1.symbol(fswSym);

  if (parsed.symbol) {
    let size = symbolSize$1(parsed.symbol);

    if (size) {
      return `${parsed.symbol}${500 - parseInt(size[0] / 2)}x${500 - parseInt(size[1] / 2)}${parsed.style || ''}`;
    }
  } else {
    return blank;
  }
};

/**
 * Function that creates an SVG image from an FSW sign with an optional style string
 * @function fsw.signSvg
 * @param {string} fswSign - an FSW sign with optional style string
 * @example
 * fsw.signSvg('M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475')
 * 
 * return `<svg version="1.1" xmlns="http://www.w3.org/2000/svg" width="49" height="69" viewBox="476 466 49 69">
 *   <text font-size="0">M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475</text>
 *   <g transform="translate(483,510)">
 *     <text class="sym-fill" fill="white" style="pointer-events:none;font-family:'SuttonSignWritingFill';font-size:30px;">􋛩</text>
 *     <text class="sym-line" fill="black" style="pointer-events:none;font-family:'SuttonSignWritingLine';font-size:30px;">󻛩</text>
 *   </g>
 *   <g transform="translate(501,466)">
 *     <text class="sym-fill" fill="white" style="pointer-events:none;font-family:'SuttonSignWritingFill';font-size:30px;">􀀒</text>
 *     <text class="sym-line" fill="black" style="pointer-events:none;font-family:'SuttonSignWritingLine';font-size:30px;">󰀒</text>
 *   </g>
 *   <g transform="translate(510,500)">
 *     <text class="sym-fill" fill="white" style="pointer-events:none;font-family:'SuttonSignWritingFill';font-size:30px;">􋚥</text>
 *     <text class="sym-line" fill="black" style="pointer-events:none;font-family:'SuttonSignWritingLine';font-size:30px;">󻚥</text>
 *   </g>
 *   <g transform="translate(476,475)">
 *     <text class="sym-fill" fill="white" style="pointer-events:none;font-family:'SuttonSignWritingFill';font-size:30px;">􀀚</text>
 *     <text class="sym-line" fill="black" style="pointer-events:none;font-family:'SuttonSignWritingLine';font-size:30px;">󰀚</text>
 *   </g>
 * </svg>`
 */

const signSvg = fswSign => {
  let parsed = parse$1.sign(fswSign);
  const blank = '<svg version="1.1" xmlns="http://www.w3.org/2000/svg" width="1" height="1"></svg>';

  if (parsed.spatials) {
    let styling = parse(parsed.style);

    if (styling.detailsym) {
      styling.detailsym.forEach(sym => {
        if (parsed.spatials[sym.index - 1]) {
          parsed.spatials[sym.index - 1].detail = sym.detail;
        }
      });
    }

    let x1 = Math.min(...parsed.spatials.map(spatial => spatial.coord[0]));
    let y1 = Math.min(...parsed.spatials.map(spatial => spatial.coord[1]));
    let x2 = parsed.max[0];
    let y2 = parsed.max[1];

    if (styling.zoomsym) {
      styling.zoomsym.forEach(sym => {
        if (parsed.spatials[sym.index - 1]) {
          parsed.spatials[sym.index - 1].zoom = sym.zoom;

          if (sym.offset) {
            parsed.spatials[sym.index - 1].coord[0] += sym.offset[0];
            parsed.spatials[sym.index - 1].coord[1] += sym.offset[1];
          }

          let size = symbolSize$1(parsed.spatials[sym.index - 1].symbol);
          x2 = Math.max(x2, parsed.spatials[sym.index - 1].coord[0] + size[0] * sym.zoom);
          y2 = Math.max(y2, parsed.spatials[sym.index - 1].coord[1] + size[1] * sym.zoom);
        }
      });
    }

    let classes = '';

    if (styling.classes) {
      classes = ` class="${styling.classes}"`;
    }

    let id = '';

    if (styling.id) {
      id = ` id="${styling.id}"`;
    }

    let background = '';

    if (styling.padding) {
      x1 -= styling.padding;
      y1 -= styling.padding;
      x2 += styling.padding;
      y2 += styling.padding;
    }

    if (styling.background) {
      background = `\n  <rect x="${x1}" y="${y1}" width="${x2 - x1}" height="${y2 - y1}" style="fill:${styling.background};" />`;
    }

    let sizing = '';

    if (styling.zoom != 'x') {
      sizing = ` width="${(x2 - x1) * (styling.zoom ? styling.zoom : 1)}" height="${(y2 - y1) * (styling.zoom ? styling.zoom : 1)}"`;
    }

    let svg = `<svg${classes}${id} version="1.1" xmlns="http://www.w3.org/2000/svg"${sizing} viewBox="${x1} ${y1} ${x2 - x1} ${y2 - y1}">
  <text font-size="0">${fswSign}</text>${background}`;
    const line = styling.detail && styling.detail[0];
    const fill = styling.detail && styling.detail[1];
    svg += '\n' + parsed.spatials.map(spatial => {
      let svg = symbolText$1(spatial.symbol);
      let symLine = line;

      if (spatial.detail) {
        symLine = spatial.detail[0];
      } else if (styling.colorize) {
        symLine = colorize(spatial.symbol);
      }

      if (symLine) {
        svg = svg.replace(/class="sym-line" fill="black"/, `class="sym-line" fill="${symLine}"`);
      }

      let symFill = fill;

      if (spatial.detail && spatial.detail[1]) {
        symFill = spatial.detail[1];
      }

      if (symFill) {
        svg = svg.replace(/class="sym-fill" fill="white"/, `class="sym-fill" fill="${symFill}"`);
      }

      if (spatial.zoom) {
        svg = `<g transform="scale(${spatial.zoom})">${svg}</g>`;
      }

      return `  <g transform="translate(${spatial.coord[0]},${spatial.coord[1]})">
${svg}
  </g>`;
    }).join('\n');
    svg += '\n</svg>';
    return svg;
  }

  return blank;
};

const signCanvas = function (fswSign) {
  const parsed = parse$1.sign(fswSign);

  if (parsed.spatials) {
    const canvas = document.createElement('canvas');
    const context = canvas.getContext('2d');
    let styling = parse(parsed.style);

    if (styling.detailsym) {
      styling.detailsym.forEach(sym => {
        if (parsed.spatials[sym.index - 1]) {
          parsed.spatials[sym.index - 1].detail = sym.detail;
        }
      });
    }

    let x1 = Math.min(...parsed.spatials.map(spatial => spatial.coord[0]));
    let y1 = Math.min(...parsed.spatials.map(spatial => spatial.coord[1]));
    let x2 = parsed.max[0];
    let y2 = parsed.max[1];

    if (styling.zoomsym) {
      styling.zoomsym.forEach(sym => {
        if (parsed.spatials[sym.index - 1]) {
          parsed.spatials[sym.index - 1].zoom = sym.zoom;

          if (sym.offset) {
            parsed.spatials[sym.index - 1].coord[0] += sym.offset[0];
            parsed.spatials[sym.index - 1].coord[1] += sym.offset[1];
          }

          let size = symbolSize$1(parsed.spatials[sym.index - 1].symbol);
          x2 = Math.max(x2, parsed.spatials[sym.index - 1].coord[0] + size[0] * sym.zoom);
          y2 = Math.max(y2, parsed.spatials[sym.index - 1].coord[1] + size[1] * sym.zoom);
        }
      });
    }

    if (styling.padding) {
      x1 -= styling.padding;
      y1 -= styling.padding;
      x2 += styling.padding;
      y2 += styling.padding;
    }

    let sizing = 1;

    if (styling.zoom != 'x') {
      sizing = styling.zoom;
    }

    let w = (x2 - x1) * sizing;
    let h = (y2 - y1) * sizing;
    canvas.width = w ? w : 1;
    canvas.height = h ? h : 1;

    if (styling.background) {
      context.rect(0, 0, w, h);
      context.fillStyle = styling.background;
      context.fill();
    }

    const line = styling.detail && styling.detail[0] || "black";
    const fill = styling.detail && styling.detail[1] || "white";
    parsed.spatials.forEach(spatial => {
      let symLine = line;

      if (spatial.detail) {
        symLine = spatial.detail[0];
      } else if (styling.colorize) {
        symLine = colorize(spatial.symbol);
      }

      let symFill = fill;

      if (spatial.detail && spatial.detail[1]) {
        symFill = spatial.detail[1];
      }

      let symZoom = spatial.zoom || 1;
      context.font = 30 * sizing * symZoom + "px 'SuttonSignWritingFill'";
      context.fillStyle = symFill;
      context.fillText(symbolFill$1(spatial.symbol), (spatial.coord[0] - x1) * sizing, (spatial.coord[1] - y1) * sizing);
      context.font = 30 * sizing * symZoom + "px 'SuttonSignWritingLine'";
      context.fillStyle = symLine;
      context.fillText(symbolLine$1(spatial.symbol), (spatial.coord[0] - x1) * sizing, (spatial.coord[1] - y1) * sizing);
    });
    return canvas;
  }
};
/**
 * Function that creates a binary PNG image from an FSW sign with an optional style string
 * @function fsw.signPng
 * @param {string} fswSign - an FSW sign with optional style string
 * @example
 * fsw.signPng('M525x535S2e748483x510S10011501x466S20544510x500S10019476x475')
 * 
 * return 'data:image/png;base64,iVBORw...'
 */


const signPng = fswSign => {
  const canvas = signCanvas(fswSign);
  const png = canvas.toDataURL("image/png");
  canvas.remove();
  return png;
};

/**
 * Function that normalizes an FSW sign for a center of 500,500
 * @function fsw.signNormalize
 * @param {string} fswSign - an FSW sign with optional style string
 * @example
 * fsw.signNormalize('M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475')
 * 
 * return 'M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475'
 */

const signNormalize = fswSign => {
  const parsed = parse$1.sign(fswSign);

  if (parsed.spatials) {
    const symbolsizes = parsed.spatials.reduce((output, spatial) => {
      const size = symbolSize$1(spatial.symbol);
      output[spatial.symbol] = {
        width: size[0],
        height: size[1]
      };
      return output;
    }, {});

    const bbox = symbols => {
      const x1 = Math.min(...symbols.map(spatial => spatial.coord[0]));
      const y1 = Math.min(...symbols.map(spatial => spatial.coord[1]));
      const x2 = Math.max(...symbols.map(spatial => spatial.coord[0] + parseInt(symbolsizes[spatial.symbol].width)));
      const y2 = Math.max(...symbols.map(spatial => spatial.coord[1] + parseInt(symbolsizes[spatial.symbol].height)));
      return {
        x1: x1,
        y1: y1,
        x2: x2,
        y2: y2
      };
    };

    const hrange = ranges['hcenter'];
    const hsyms = parsed.spatials.filter(spatial => {
      const dec = parseInt(spatial.symbol.slice(1, 4), 16);
      return hrange[0] <= dec && hrange[1] >= dec;
    });
    const vrange = ranges['vcenter'];
    const vsyms = parsed.spatials.filter(spatial => {
      const dec = parseInt(spatial.symbol.slice(1, 4), 16);
      return vrange[0] <= dec && vrange[1] >= dec;
    });
    let abox = bbox(parsed.spatials);
    let max = [abox.x2, abox.y2];

    if (hsyms.length) {
      const hbox = bbox(hsyms);
      abox.x1 = hbox.x1;
      abox.x2 = hbox.x2;
    }

    if (vsyms.length) {
      const vbox = bbox(vsyms);
      abox.y1 = vbox.y1;
      abox.y2 = vbox.y2;
    }

    const offset = [parseInt((abox.x2 + abox.x1) / 2) - 500, parseInt((abox.y2 + abox.y1) / 2) - 500];
    const fswout = (parsed.sequence ? 'A' + parsed.sequence.join('') : '') + parsed.box + (max[0] - offset[0]) + 'x' + (max[1] - offset[1]) + parsed.spatials.map(spatial => spatial.symbol + (spatial.coord[0] - offset[0]) + 'x' + (spatial.coord[1] - offset[1])).join('') + (parsed.style || '');
    return fswout;
  }
};

export { signNormalize, signPng, signSvg, symbolFill$1 as symbolFill, symbolLine$1 as symbolLine, symbolNormalize, symbolPng, symbolSize$1 as symbolSize, symbolSvg, symbolText$1 as symbolText };

/* support ongoing development on https://patreon.com/signwriting */