Function cursorCoords

static/js/codemirror/codemirror.js:1076–1110

(cm, pos, context, lineObj, measurement)

  }

  function cursorCoords(cm, pos, context, lineObj, measurement) {
    lineObj = lineObj || getLine(cm.doc, pos.line);
    if (!measurement) measurement = measureLine(cm, lineObj);
    function get(ch, right) {
      var m = measureChar(cm, lineObj, ch, measurement);
      if (right) m.left = m.right; else m.right = m.left;
      return intoCoordSystem(cm, lineObj, m, context);
    }
    var order = getOrder(lineObj), ch = pos.ch;
    if (!order) return get(ch);
    var main, other, linedir = order[0].level;
    for (var i = 0; i < order.length; ++i) {
      var part = order[i], rtl = part.level % 2, nb, here;
      if (part.from < ch && part.to > ch) return get(ch, rtl);
      var left = rtl ? part.to : part.from, right = rtl ? part.from : part.to;
      if (left == ch) {
        // IE returns bogus offsets and widths for edges where the
        // direction flips, but only for the side with the lower
        // level. So we try to use the side with the higher level.
        if (i && part.level < (nb = order[i-1]).level) here = get(nb.level % 2 ? nb.from : nb.to - 1, true);
        else here = get(rtl && part.from != part.to ? ch - 1 : ch);
        if (rtl == linedir) main = here; else other = here;
      } else if (right == ch) {
        var nb = i < order.length - 1 && order[i+1];
        if (!rtl && nb && nb.from == nb.to) continue;
        if (nb && part.level < nb.level) here = get(nb.level % 2 ? nb.to - 1 : nb.from);
        else here = get(rtl ? ch : ch - 1, true);
        if (rtl == linedir) main = here; else other = here;
      }
    }
    if (linedir && !ch) other = get(order[0].to - 1);
    if (!main) return other;
    if (other) main.other = other;
    return main;
  }

  function PosMaybeOutside(line, ch, outside) {
    var pos = new Pos(line, ch);