Carson Sievert || Custom Theming with {bslib} in Shiny and R Markdown using bs_theme() || RStudio
00:00 Introduction
01:15 Jumping right in with the theme argument in Shiny
01:31 Shiny's classic navbarPage using bs_theme()
01:46 Specifying your Bootstrap version
02:31 Using the theme argument in R Markdown
03:17 Custom theming in R Markdown using bs_theme()
04:10 bslib templates provided by RStudio
05:33 Review of common arguments for the theme parameter
08:47 Tips for working with dark themes
10:34 Introduction to the thematic package, which styles plots
12:04 How thematic handles fonts
13:09 Using fonts with bslib in R Markdown
14:36 Moving a theme from an R Markdown document into a Shiny app
16:51 Setting warnings for contrast ratios
18:42 A quick tour of Bootstrap 4 and Bootstrap 5 Sass variables
20:35 A quick overview of writing custom HTML in Shiny
22:15 How bslib automatically handles color contrast ratios
bs_theme() allows you to creates a Bootstrap theme object, where you can choose a (major) Bootstrap version, choose a Bootswatch theme (optional), customize main colors and fonts via explicitly named arguments (e.g., bg, fg, primary, etc), and customize other, lower-level, Bootstrap Sass variable defaults via ....
You can read more about the bslib package here: https://rstudio.github.io/bslib/
And you can learn more about Shiny here: https://shiny.rstudio.com/
Got questions? The RStudio Community site is a great place to get assistance: https://community.rstudio.com/
Content: Carson Sievert (@cpsievert)
Design and editing: Jesse Mostipak (@kierisi)