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63 lines
1.9 KiB
63 lines
1.9 KiB
3 years ago
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#' Preview numbers, kerning, and ligatures from font variants you create
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#'
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#' Use this function to preview the special features of fonts you create
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#' including how well the default kerning ruls work, how tabular numbers
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#' behave, and whether or not modern, fun ligatures are supported. Change
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#' the `test_label` if you wish to use a custom preview string.
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#'
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#' @param font_variant a font variant object created with [reconfigure_font()]
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#' @param font_size passed to [ggplot2::geom_text()]
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#' @param test_label a specially designed preview string to showcase some
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#' specific font features
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#' @return A ggplot2 object
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#' @export
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#' @examples
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#' reconfigure_font(
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#' family = "Trattatello",
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#' width = "normal",
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#' ligatures = "discretionary",
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#' calt = 1, tnum = 1, case = 1,
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#' dlig = 1, kern = 1,
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#' zero = 0, salt = 0
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#' ) -> trat
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#'
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#' preview_variant(trat)
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#'
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#' reconfigure_font(
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#' family = "Barlow",
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#' width = "normal",
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#' ligatures = "standard",
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#' tnum = 1, kern = 1
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#' ) -> barlow
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#'
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#' preview_variant(barlow)
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preview_variant <- function(font_variant, font_size = 5,
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test_label = "Lorem Ipsum dolor sit amet consectetur. => A⃝\n−0+1:2~3,456789\n−9+8:7~6,543210") {
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ggplot() +
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geom_text(
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data = data.frame(
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x = rep(1, length(font_variant)),
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y = 2 * (0:(length(font_variant)-1)),
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family = unlist(font_variant, use.names = FALSE)
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),
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aes(x = x, y = y, label = test_label, family = family),
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size = font_size, lineheight = 0.875, color = "black"
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) +
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scale_y_continuous(expand = c(0, 2)) +
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labs(title = attr(font_variant, "family")) +
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theme_minimal() +
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theme(
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plot.title = element_text(family = font_variant$normal, size = 9, hjust = 0.5)
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) +
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theme(
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panel.grid.major = element_blank(),
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panel.grid.minor = element_blank()
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) +
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theme(
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axis.text = element_blank(),
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axis.title = element_blank()
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)
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}
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