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Attach the app's typeface to a plotly chart (for downloaded HTML)

Source: R/plotly.R
kit_plotly_fonts.Rd

Attaches an htmlDependency to a plotly chart that loads the rounded typeface Chiron GoRound TC from Google Fonts (weights 400 and 700). Shiny pages already have this typeface (kit_theme()), so this is mainly for single HTML files saved with htmlwidgets::saveWidget(): they also open in the app's typeface; without a network connection they fall back to the system sans-serif.

Usage

kit_plotly_fonts(p)

Arguments

p

A plotly chart (or another htmlwidget).

Value

The same chart, with one more htmlDependency (kit-plotly-fonts).

Details

The <link> carries data-external="1": when saveWidget(selfcontained = TRUE) bundles the file with pandoc, the font files are not embedded in the HTML (a Chinese typeface is split into hundreds of files, so embedding them would make the file very large). kit_plotly_style() already calls it by default (fonts = TRUE); attaching it twice to the same chart is the same as attaching it once.

See also

kit_plotly_style()

Examples

if (requireNamespace("plotly", quietly = TRUE)) {
  p <- kit_plotly_fonts(plotly::plot_ly(x = 1:3, y = c(2, 4, 3), type = "scatter", mode = "lines"))
  vapply(p$dependencies, function(d) d$name, "")
}
#> [1] "typedarray"             "jquery"                 "crosstalk"             
#> [4] "plotly-htmlwidgets-css" "plotly-main"            "kit-plotly-fonts"