### STYLES #

  (info)
    <int>     - Integer
    <string>  - String
    <color>   - #<HHH> or #<HHH> or rgb(<I>, <I>, <I>) or rgba(<I>, <I>, <I>, <float>)
              -   where H = [0..F], I = [0..255]
    <size>    - <N>px, where N = <int>
    <float>   - Float

  font:
    family  (<string>|caption|icon|menu|message-box|small-caption|status-bar)
    style:  (normal|italic|oblique)
    weight  (<int>|normal|bold|bolder|lighter)
    variant (normal|small-caps)
    size    (<int>)
    align   (start|end|center|left|right)
    valign  (alphabetic|top|hanging|middle|ideographic|bottom)
  stroke    (<color>)
  color     (<color>)
  composite (source-over|source-atop|source-in|source-out|destination-over|
              destination-atop|destination-in|destination-out|lighter|copy|xor)
  opacity   (<float[0..1]>)
  line:
    cap     (butt|round|square)
    join    (bevel|round|miter)
    size    (<int>)
    mitter  (<int>)
  shadow:
    color   (<color>)
    top     (<int>)
    left    (<int>)
    size    (<int>)

  Example:
    ctx.style
      font: {
        family: 'Arial',
        weight: 'bold',
        size:   15,
        align:  'center'
      },
      color: '#fff',
      shadow: {
        color: '#2f0103',
        top: 1
      }
###

CanvasRenderingContext2D::style = (args) ->
  if args.font?
    if args.font.family? || args.font.style? || args.font.weight? || args.font.size? || args.font.variant?
      this.font = (args.font.style || '') + ' ' +
        (args.font.variant || '') + ' ' +
        (args.font.weight  || '') + ' ' +
        ((args.font.size|0) + 'px' || '') + ' ' +
        (args.font.family  || '')
    this.textAlign    = args.font.align  || 'left'
    this.textBaseline = args.font.valign || 'top'

  this.strokeStyle  = args.stroke || ''
  this.fillStyle    = args.color  || '#000'
  this.globalCompositeOperation = args.composite || 'source-over'
  this.globalAlpha  = args.opacity || 1

  if args.line?
    this.lineCap    = args.line.cap   || 'butt'
    this.lineJoin   = args.line.join  || 'miter'
    this.lineWidth  = (args.line.size|0)    || 1
    this.miterLimit = (args.line.mitter|0)  || 10

  if args.shadow?
    this.shadowColor    = args.shadow.color if args.shadow.color?
    this.shadowOffsetY  = (args.shadow.top|0)  || 0
    this.shadowOffsetX  = (args.shadow.left|0) || 0
    this.shadowBlur     = (args.shadow.size|0) || 0