resolve method
Implementation
Color resolve(RenderStyle renderStyle) {
switch (type) {
case CSSPaintType.color: return getColor();
case CSSPaintType.none: return _transparentColor;
case CSSPaintType.currentColor: return renderStyle.color.value;
// TODO: implements others in the future
case CSSPaintType.contextFill:
case CSSPaintType.contextStroke:
break;
}
return _blackColor;
}