toRgbaString method

String toRgbaString(
  1. double alpha
)

As rgb with alpha channel

Implementation

String toRgbaString(double alpha)
{
  if (isEmpty) {
    // Empty is transparent.
    return EMPTY_COLOR_CSSVALUE;
  }
  else {
    return "rgba(" + _getColourValue(red).toString() + "," + _getColourValue(green).toString() + "," + _getColourValue(blue).toString() + "," + alpha.toString() + ")";
  }
}