R/element-line.R

In miyamot0/fxl: 'fxl' Single Case Design Charting Package

#' scr_lines
#'
#' @param core_frame fxl object
#' @param lty from base
#' @param color from base
#' @param size from base
#' @param mapping from base
#'
#' @author Shawn Gilroy <sgilroy1@@lsu.edu>
#'
#' @returns a layer to the core plotting object
#'
#' @export
#' @importFrom rlang enexprs
scr_lines <- function(core_frame,
                      lty = 1,
                      color = "black",
                      size = 1,
                      mapping) {
  newlayer <- list()
  newlayer[["type"]] <- "line"

  assert_input_type(lty, "numeric", "lty")
  newlayer[["lty"]] <- lty

  assert_input_type(color, "character", "color")
  newlayer[["color"]] <- color

  assert_input_type(size, "numeric", "size")
  newlayer[["size"]] <- size

  newlayer[["aesthetics"]] <- NA

  if (!missing(mapping)) newlayer[["aesthetics"]] <- enexpr(mapping)

  core_frame$layers[[(length(core_frame[["layers"]]) + 1)]] <- newlayer

  core_frame
}