# Palette -----------------------------------------------------------------
# madstork colors
madstork_colors <- c(
`orange` = "#f2671d",
`dark grey` = "#8c8c8c",
`dark blue` = "#00009a",
`light grey` = "#cccccc",
`light blue` = "#1da8f2"
)
#' Function to extract madstork colors as hex codes
#'
#' @param ... Character names of madstork_colors
#' @export
madstork_cols <- function(...) {
cols <- c(...)
if (is.null(cols))
return (madstork_colors)
madstork_colors[cols]
}
madstork_palettes <- list(
`main` = madstork_cols("orange", "dark grey", "dark blue", "light grey"),
`grey` = madstork_cols("dark grey", "light grey")
)
#' Return function to interpolate a madstork color palette
#'
#' @param palette Character name of palette in madstork_palettes
#' @param reverse Boolean indicating whether the palette should be reversed
#' @param ... Additional arguments to pass to colorRampPalette()
#' @export
madstork_pal <- function(palette = "main", reverse = FALSE, ...) {
pal <- madstork_palettes[[palette]]
if (reverse) pal <- rev(pal)
grDevices::colorRampPalette(pal, ...)
}
#' Color scale constructor for madstork colors
#'
#' @param palette Character name of palette in madstork_palettes
#' @param discrete Boolean indicating whether color aesthetic is discrete or not
#' @param reverse Boolean indicating whether the palette should be reversed
#' @param ... Additional arguments passed to discrete_scale() or
#' scale_color_gradientn(), used respectively when discrete is TRUE or FALSE
#' @export
scale_color_madstork <- function(palette = "main", discrete = TRUE, reverse = FALSE, ...) {
pal <- madstork_pal(palette = palette, reverse = reverse)
if (discrete) {
discrete_scale("colour", paste0("madstork_", palette), palette = pal, ...)
} else {
scale_color_gradientn(colours = pal(256), ...)
}
}
#' Fill scale constructor for madstork colors
#'
#' @param palette Character name of palette in madstork_palettes
#' @param discrete Boolean indicating whether color aesthetic is discrete or not
#' @param reverse Boolean indicating whether the palette should be reversed
#' @param ... Additional arguments passed to discrete_scale() or
#' scale_fill_gradientn(), used respectively when discrete is TRUE or FALSE
#' @export
scale_fill_madstork <- function(palette = "main", discrete = TRUE, reverse = FALSE, ...) {
pal <- madstork_pal(palette = palette, reverse = reverse)
if (discrete) {
discrete_scale("fill", paste0("madstork_", palette), palette = pal, ...)
} else {
scale_fill_gradientn(colours = pal(256), ...)
}
}
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