crushingr: Crushings personal R package

#' theme_dark
#'
#' Modification of theme_clark to add dark background & grey axis lines/text (based on solarized)
#' @param ggplot object
#' @keywords theme
#' @export

theme_dark <- function(base_size = 12, base_family = "") {
  half_line <- base_size/2
  ggplot2::theme(
    # Elements in this first block aren't used directly, but are inherited
    # by others
    line =               element_line(colour = "#cb4b16", size = 0.5, linetype = 1,
                                      lineend = "butt"),
    rect =               element_rect(fill = "white", colour = "black", size = 0.5, linetype = 1),
    text =               element_text(family = base_family, face = "plain",
                                      colour = "black", size = base_size,
                                      hjust = 0.5, vjust = 0.5, angle = 0, lineheight = 0.9, margin = margin(),
                                      debug = FALSE),
    axis.text =          element_text(size = rel(0.8), colour = "#586e75"),
    axis.title=          element_text(colour = "#839496", vjust=0.35),
    strip.text =         element_text(size = rel(0.8)),

    axis.line =          element_line(size=.7, color = "#586e75"),
    axis.text.x =        element_text(size = base_size*1.1 , lineheight = 0.9,
                                      margin = margin(t = 0.8 * half_line/2), vjust = 1),
    axis.text.y =        element_text(size = base_size*1.1, lineheight = 0.9,
                                      margin = margin(r = 0.8 * half_line/2), vjust = 1),
    axis.ticks =         element_line(colour = "#586e75", size = 0.2),
    axis.title.x =       element_text(size = base_size*1.4, vjust = 0.3,
                                      margin = margin(t = 0.8 * half_line, b = 0.8 * half_line/2)),
    axis.title.y =       element_text(size = base_size*1.4, angle = 90, vjust = 1,
                                      margin = margin(r = 0.8 * half_line, l = 0.8 * half_line/2)),
    axis.ticks.length =  grid::unit(0.3, "lines"),

    legend.background =  element_rect(colour = NA),
    legend.margin =      grid::unit(0.2, "cm"),
    legend.key =         element_rect(colour = "grey80"),
    legend.key.size =    grid::unit(1.2, "lines"),
    legend.key.height =  NULL,
    legend.key.width =   NULL,
    legend.text =        element_text(size = base_size * 0.8),
    legend.text.align =  NULL,
    legend.title =      element_blank(),
    legend.title.align = NULL,
    legend.position =    "right",
    legend.direction =   NULL,
    legend.justification = "center",
    legend.box =         NULL,

    panel.background =   element_rect(fill = "#002b36", colour = NA),
    panel.border =       element_blank(),
    panel.grid.major =   element_blank(),
    panel.grid.minor =   element_blank(),
    panel.margin =       grid::unit(half_line, "pt"),
    panel.margin.x =     NULL,
    panel.margin.y =     NULL,

    strip.background =   element_rect(fill = NA, colour = NA),
    strip.text.x =       element_text(size = base_size),
    strip.text.y =       element_text(size = base_size, angle = -90),

    plot.background =   element_rect(fill = "#002b36"),
    plot.title =        element_text(size = base_size * 1.7, face="bold",vjust=2),
    plot.margin =       grid::unit(c(1, 1.5, 0.8, 0.8), "lines"),

    complete = TRUE
  )
}