Function createImgTag

src/qrcode.js:1973–2011

(width, height, getPixel, alt)

  }

  var createImgTag = function (width, height, getPixel, alt) {
    var gif = gifImage(width, height)
    for (var y = 0; y < height; y += 1) {
      for (var x = 0; x < width; x += 1) {
        gif.setPixel(x, y, getPixel(x, y))
      }
    }

    var b = byteArrayOutputStream()
    gif.write(b)

    var base64 = base64EncodeOutputStream()
    var bytes = b.toByteArray()
    for (var i = 0; i < bytes.length; i += 1) {
      base64.writeByte(bytes[i])
    }
    base64.flush()

    var img = ''
    img += '<img'
    img += '\u0020src="'
    img += 'data:image/gif;base64,'
    img += base64
    img += '"'
    img += '\u0020width="'
    img += width
    img += '"'
    img += '\u0020height="'
    img += height
    img += '"'
    if (alt) {
      img += '\u0020alt="'
      img += alt
      img += '"'
    }
    img += '/>'

    return img
  }

  // ---------------------------------------------------------------------
  // returns qrcode function.