code: public float getStringWidth(String text, FontOptions options)
  	{
  		if (StringUtils.isEmpty(text))
  			return 0;
  
  		StringWalker walker = new StringWalker(text, options);
  		walker.walkToEnd();
  		return walker.width();
  	}
docs: Gets the rendering width of the text.
  
  @param text the text
  @param options the options
  @return the string width