Translate font faces in axis titles. Fixes #861

Author: cpsievert

NEWS.md

@@ -16,14 +16,15 @@
 
 ## CHANGES
 
-* Upgraded to plotly.js v1.24.1 -- https://github.com/plotly/plotly.js/releases/tag/v1.24.1
+* Upgraded to plotly.js v1.24.2 -- https://github.com/plotly/plotly.js/releases/tag/v1.24.2
 * `HTMLwidgets.renderValue()` now calls `Plotly.redraw()` instead of `Plotly.newPlot()`. (thanks @AleksandrIanevski)
 * A TypedArray polyfill is now included by default, and the function `remove_typedarray_polyfill()` was added to make it easy to remove it. Fixes #824, #717, #825.
 * If no graphics device is already open, `ggplotly()` now tries to open/close a Cairo graphics device, then a bitmap (png/jpeg) device. If neither is available, it errors. This helps to ensure that a *screen* device is never opened by `ggplotly()` (which fixes #829). Furthermore, if `width`/`height` is not specified *and* no graphics device is currently open, a default of 640/480 is used for width/height of the device. 
 
 ## BUG FIXES
 
 * Fix for hoverinfo displaying the heights of bars in the translation `geom_bar()` via `ggplotly()`. Fixes #557 and #662.
+* Font faces for axis titles are now translated in `ggplotly()`. Fixes #861.
 
 # 4.5.6
 

R/ggplotly.R

@@ -584,7 +584,7 @@ gg2list <- function(p, width = NULL, height = NULL,
         gridwidth = unitConvert(panelGrid, "pixels", type),
         zeroline = FALSE,
         anchor = anchor,
-        title = axisTitleText,
+        title = faced(axisTitleText, axisTitle$face),
         titlefont = text2font(axisTitle)
       )
       # convert dates to milliseconds (86400000 = 24 * 60 * 60 * 1000)

tests/testthat/test-cookbook-axes.R

@@ -133,6 +133,8 @@ bp.fonts <- bp +
 test_that("element_text face, colour, size, angle, vjust, size", {
   info <- expect_traces(bp.fonts, 1, "fonts")
   expect_equal(info$layout$xaxis$tickangle, -90)
+  expect_equal(info$layout$xaxis$title, "<b>", fixed = TRUE)
+  expect_equal(info$layout$xaxis$title, "</b>", fixed = TRUE)
 })
 
 # Label formatters