Method: Sass::Script::Functions#rgba

Defined in:
lib/sass/script/functions.rb

#rgba($red, $green, $blue, $alpha) ⇒ Sass::Script::Value::Color #rgba($color, $alpha) ⇒ Sass::Script::Value::Color

Creates a Color from red, green, blue, and alpha values.

Overloads:

See Also:



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# File 'lib/sass/script/functions.rb', line 713

def rgba(*args)
  case args.size
  when 1
    return unquoted_string("rgba(#{args.first})") if var?(args.first)
    raise ArgumentError.new("wrong number of arguments (1 for 4)")
  when 2
    color, alpha = args

    if var?(color)
      return unquoted_string("rgba(#{color}, #{alpha})")
    elsif var?(alpha)
      if color.is_a?(Sass::Script::Value::Color)
        return unquoted_string("rgba(#{color.red}, #{color.green}, #{color.blue}, #{alpha})")
      else
        return unquoted_string("rgba(#{color}, #{alpha})")
      end
    end

    assert_type color, :Color, :color
    if special_number?(alpha)
      unquoted_string("rgba(#{color.red}, #{color.green}, #{color.blue}, #{alpha})")
    else
      assert_type alpha, :Number, :alpha
      color.with(:alpha => percentage_or_unitless(alpha, 1, "alpha"))
    end
  when 3
    if var?(args[0]) || var?(args[1]) || var?(args[2])
      unquoted_string("rgba(#{args.join(', ')})")
    else
      raise ArgumentError.new("wrong number of arguments (3 for 4)")
    end
  when 4
    red, green, blue, alpha = args
    if special_number?(red) || special_number?(green) ||
       special_number?(blue) || special_number?(alpha)
      unquoted_string("rgba(#{red}, #{green}, #{blue}, #{alpha})")
    else
      rgba(rgb(red, green, blue), alpha)
    end
  else
    raise ArgumentError.new("wrong number of arguments (#{args.size} for 4)")
  end
end