Function getPixels

stackgl_modules/index.js:39096–39258

(canvas, context, rawString, fontSize, lineSpacing, styletags)

}

function getPixels(canvas, context, rawString, fontSize, lineSpacing, styletags) {

  rawString = rawString.replace(/\n/g, '') // don't accept \n in the input

  if(styletags.breaklines === true) {
    rawString = rawString.replace(/\<br\>/g, '\n') // replace <br> tags with \n in the string
  } else {
    rawString = rawString.replace(/\<br\>/g, ' ') // don't accept <br> tags in the input and replace with space in this case
  }

  var activeStyle = ""
  var map = []
  for(j = 0; j < rawString.length; ++j) {
    map[j] = activeStyle
  }

  if(styletags.bolds === true) map = parseTag(TAG_bold, CHR_bold, rawString, map)
  if(styletags.italics === true) map = parseTag(TAG_italic, CHR_italic, rawString, map)
  if(styletags.superscripts === true) map = parseTag(TAG_super, CHR_super, rawString, map)
  if(styletags.subscripts === true) map = parseTag(TAG_sub, CHR_sub, rawString, map)

  var allStyles = []
  var plainText = ""
  for(j = 0; j < rawString.length; ++j) {
    if(map[j] !== null) {
      plainText += rawString[j]
      allStyles.push(map[j])
    }
  }

  var allTexts = plainText.split('\n')

  var numberOfLines = allTexts.length
  var lineHeight = Math.round(lineSpacing * fontSize)
  var offsetX = fontSize
  var offsetY = fontSize * 2
  var maxWidth = 0
  var minHeight = numberOfLines * lineHeight + offsetY

  if(canvas.height < minHeight) {
    canvas.height = minHeight
  }

  context.fillStyle = "#000"
  context.fillRect(0, 0, canvas.width, canvas.height)

  context.fillStyle = "#fff"
  var i, j, xPos, yPos, zPos
  var nDone = 0

  var buffer = ""
  function writeBuffer() {
    if(buffer !== "") {
      var delta = context.measureText(buffer).width

      context.fillText(buffer, offsetX + xPos, offsetY + yPos)
      xPos += delta
    }