<!-- Регулировка размера шрифта в постах © Alex_63 + абзац -->
<style>
.FNTslider {
  border-radius: 4px;
  position:relative;z-index:1000;
  background: #E0E0E0;
  width: 110px;
  height: 5px;
  margin: 3px 5px;
  border: solid 1px #ccc;
  float: right;
  margin-right: 7%;
}
.FNTslider .before {
  height: 5px;
  border: solid 1px transparent;
  border-right: none 0;
  border-radius: 4px 0 0 4px;
  position: absolute;
  background: #A0BCDA;
  margin-top: -1px;
}
.FNTslider .thumb {
  width: 8px;
  height: 13px;
  border-radius: 3px;
  position: relative;
  top: -4px;
  background: #3980D8;
  cursor: pointer;
}
.punbb .post-content p {
    padding: 0 0 1em 0;
    }
.punbb .post-content p.formatted {
    padding: 0 0 0 0;
    text-indent:2.6em;
}
</style>
 
 
<script>
/*********************************
  MyBB.ru
  Регулировка размера шрифта в постах
  Версия: V1.1.0
  Автор: Alex_63
  Дата: 24.02.2016
  Последние изменения: 13.02.2017
*********************************/

function formatTextParagraphs(forumIndexes) {
if (!(FORUM.topic && forumIndexes.includes(+FORUM.topic.forum_id))) return;
if($('.post').length)(function(){

$(".post-content").each(function(key, item) {
        var paragraphs = $(item).children("p");
        $(paragraphs).each(function(pkey, paragraph) {
 
            if ($(paragraph).attr('style') || $(paragraph).attr('class')) return;
            var pHtml = $(paragraph).html();
            var tempDiv = document.createElement('div');
            $(tempDiv).html(pHtml);
            var tags = $(tempDiv).children();
            var tagStore = [];
            tags.each(function(key, tag) {
            	if (tag.tagName === 'BR') return;
            	tagStore.push(tag.outerHTML);
            	tag.outerHTML = '|HTML-REPLACER|';
            });
            var newParagraph = $(tempDiv)
                .html()
                .split("<br>");
            var output = "";
            newParagraph.forEach(function(p) {
                output += p.length ? '<p class="formatted">' + p.replace(/^( ?\&nbsp;)*/, '').replace(/^ */, '') + "</p>" : "";
            });
            while (tagStore.length > 0) {
            	var tag = tagStore.shift();
            	output = output.replace('|HTML-REPLACER|', tag);
            };
            $(paragraph).html(output);
        });
    });
 
  var sld = '<div id="fntSlider" class="FNTslider"><div class="before"></div><div class="thumb"></div></div>';
  var pstSp = $('.post:first h3 > span');pstSp.find('strong').length ? pstSp.find('strong').after(sld) : pstSp.append(sld);
  var sliderElem = $('#fntSlider')[0];
  var thumbElem = $('#fntSlider > .thumb')[0];
  var thumbBefor= $('#fntSlider > .before')[0];
  var slideWidth = $('#fntSlider').width();
  var p00 = parseInt($('#fntSlider').css('padding-left'));
 
  if(thumbElem)thumbElem.title='Размер шрифта';
  $('#fntSlider > .thumb').tipsy({fade:true,gravity:'nw'});
 
  var lSFont=localStorage.getItem('FNTsize');
  var st_Size = '';
  if(lSFont){lSFont=lSFont.split(',');
    var k01=lSFont[0];var k02=lSFont[1];
    thumbElem.style.left=k01+'px';
    thumbBefor.style.width=k01+'px';
    $('.post-content p').css('font-size',k02+'px');
    st_Size=lSFont[2];
  } else {
    var Fnt=$('.post-content p:first').css('font-size');
    Fnt=Fnt.replace('px','');Fnt=Math.round(parseFloat(Fnt));
    st_Size=''+Fnt;Fnt-=6;Fnt=Fnt*5;
    thumbElem.style.left=Fnt+'px';
    thumbBefor.style.width=Fnt+'px';
  }
 
  function setFont(f) {
    var k00=parseInt(f/5);k00+=6;
    if(k00>30){k00=30;}
    $('.post-content p').css('font-size',k00+'px');
    localStorage.setItem('FNTsize',f+','+k00+','+st_Size.replace('px',''));
  }
  function getCoords(elem) {var b=elem.getBoundingClientRect();return{top:b.top+pageYOffset,left:b.left+pageXOffset};}
  $(thumbElem).on('mousedown touchstart',function(e) {
      var thumbCoords = getCoords(thumbElem);
      var pageX = ( e.type=='mousedown' ? e.pageX : e.originalEvent ? e.originalEvent.touches[0].pageX : e.touches[0].pageX );
      var shiftX = pageX - thumbCoords.left;
 
      var sliderCoords = getCoords(sliderElem);
      sliderCoords.left += p00;
      document.onmousemove = document.ontouchmove = function(e) {
        var pageX = ( e.type=='mousemove' ? e.pageX : e.originalEvent ? e.originalEvent.touches[0].pageX : e.touches[0].pageX );
        var newLeft = pageX - shiftX - sliderCoords.left;
        if (newLeft < 0) {newLeft = 0;}
        var rightEdge = slideWidth - thumbElem.offsetWidth;
        if (newLeft > rightEdge) {newLeft = rightEdge;}
        thumbElem.style.left = newLeft + 'px';
        thumbBefor.style.width=newLeft + 'px';
        setFont(newLeft);
      }
      document.onmouseup = document.ontouchend = function(){document.onmousemove=document.onmouseup=document.ontouchend=document.ontouchmove=null;};
      return false;
  });
  thumbElem.ondragstart = function() {return false;};
 
  sliderElem.ondblclick = function(){
    var stFnt=st_Size;//alert(stFnt);
    $('.post-content p').css('font-size',stFnt+'px');
    stFnt=parseInt(stFnt);stFnt-=6;stFnt=stFnt*5;
    localStorage.removeItem('FNTsize');
    thumbElem.style.left=stFnt+'px';//alert(Fnt);
    thumbBefor.style.width=stFnt+'px';
  };
}())

}
</script>
 
<script>
$(document).ready(function() {
var forumIndexes = [2]; // форумы, где нужен indent, указываем только ID-номер форума, последнее число без запятой
formatTextParagraphs(forumIndexes);
});
</script>