[Feature request] - Add arguments to bbc_style() for easy customization

[edgararuiz-zz]

Windows machines do not support Helvetica font type, so I had to make modifications to the bbc_style() in a separate ggplot2() function. It would be cool to have maybe a font argument that defaults to Helvetica, but would allow others to change the font name. Once the font changes, there may be some sizing differences, so it would also be cool to create an offset size, to do a plus or minus the current font sizes used in your function: bbc_style <- function(font = "Helvetica", offset = 0), which would allow me to use it like this: bbc_style("Arial", -2).

[jlopezper]

@edgararuiz could you please check whether my PR fits your request?

[edgararuiz-zz]

Yes! I just re ran my script using your fork and it worked like a charm. Thanks!

[atusy]

I think bbc_style better have arguments consistent to ggplot2 theme_* functions like below, and sizes being controled by ggplot2::rel().

bbc_style <- function(
  base_size, 
  base_family = "Helvetica", 
  base_line_size, 
  base_rect_size, 
  offset = 0
)