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Use npm Packages

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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              -var nRulers = 10;

      while nRulers--
    span.text Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco
    button.guideBtn Toggle guides
      button.incdec FS -
      button.incdec FS +
      label#FS 0px
      button.incdec LH -
      button.incdec LH +
      label#LH 0px
      label#EM 0em
              // lineHeight variable defines (besides spacing between baselines) the very first line's baseline position from the top of containing block 
// NB! when modifying typeface, re-run JS(ctrl-shift-5)

typeface   = Georgia
fontSize   = 16px  // min 15px
lineHeight = 25px  // min 1.2em

blockWidth  = 200px
blockHeight = 200px // 80vh
rulerThick  = 2px

  display inline-block
  height lineHeight
  width 15px  
  background-color alpha(black,50%)

  vertical-align baseline
  font-family typeface
  font-size fontSize
  line-height lineHeight
  background-color alpha(cyan,30%)
  margin-top (lineHeight - rulerThick)
  border 0
  border-bottom rulerThick
  border-color alpha(red, 40%)
  border-style solid

  position absolute
  top rulerThick
  width 100%

  display inline-block
  position relative
  overflow hidden
  height blockHeight
  width blockWidth

  // margin 5vh auto 0
  border 5px solid alpha(blue, 50%)
  background-color alpha(red, 10%)

  margin 5vh auto 0
  width blockWidth*2.5

  display inline-block
  vertical-align top
  visibility hidden
              $.C = $.Color
bgC = $('#container').css 'background-color'
borderC = $('#container').css 'border-color'
lineC = $('.text').css 'background-color'

$('.guideBtn').on 'click', ->
  $('.strut, #rulers-wrap').toggleClass 'hidden'
  .css 'background-color', cHandler bgC 
  .css 'border-color', cHandler borderC
  $('.text').css 'background-color', cHandler lineC

$('.incdec').on 'click', ->
  label = $(this).text()
  prop = if label.slice(0,2)=='FS' then 'font-size' else 'line-height'
  v = if label.slice(-1)=='-' then -1 else +1
  $('.text').css prop, parseInt($('.text').css prop )+v+'px'
  lh = parseInt $('.text').css 'line-height'
  rulTh = parseInt $('.rulers').css 'border-bottom'
  $('.strut').css 'height', lh + 'px'
  $('.rulers').css 'margin-top', lh - rulTh + 'px'
cHandler = (color) ->
    c = if $.C(c).alpha() then $.C(color).alpha(0) else color

refreshFSLH = ->   
  $('#FS').text $('.text').css 'font-size'
  $('#LH').text $('.text').css 'line-height'
  $('#EM').text String(
    parseInt($('.text').css('line-height')) /  parseInt($('.text').css('font-size'))
    ).slice(0,4) + 'em'

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