Change header_background_enable to header_background_auto for #10

R/duo.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/duo_accent.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/duo_accent_inverse.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/mono_accent.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/mono_accent_inverse.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/mono_dark.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/mono_light.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/solarized_dark.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/solarized_light.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",

R/theme_settings.R

   , "header_h1_font_size", "55px", ".remark-slide-content h1", "h1 Header Text Font Size"
   , "header_h2_font_size", "45px", ".remark-slide-content h2", "h2 Header Text Font Size"
   , "header_h3_font_size", "35px", ".remark-slide-content h3", "h3 Header Text Font Size"
-  , "header_background_enable", "{FALSE}", "", "Enable Header Background Under First h1 Slide Element"
+  , "header_background_auto", "{FALSE}", "", "Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable."
   , "header_background_color", "{header_color}", ".remark-slide-content h1", "Background Color for h1 Header with Background"
   , "header_background_text_color", "{background_color}", ".remark-slide-content h1", "Text Color for h1 Header with Background"
   , "header_background_padding", "2rem 4rem 1.5rem 4rem", ".remark-slide-content h1", "Padding for h1 Header with Background"
     out,
     glue::glue("Modifies the `{element}` {plural_element(element)}.")
   )
+}

R/write_theme.R

 #' @param header_h1_font_size h1 Header Text Font Size. Defaults to 55px. Modifies the `.remark-slide-content h1` class.
 #' @param header_h2_font_size h2 Header Text Font Size. Defaults to 45px. Modifies the `.remark-slide-content h2` class.
 #' @param header_h3_font_size h3 Header Text Font Size. Defaults to 35px. Modifies the `.remark-slide-content h3` class.
-#' @param header_background_enable Enable Header Background Under First h1 Slide Element. Defaults to `FALSE`. Modifies the `` element.
+#' @param header_background_auto Add background under slide title automatically for h1 header elements. If not enabled, use `class: header_background` to enable.. Defaults to `FALSE`. 
 #' @param header_background_color Background Color for h1 Header with Background. Defaults to `header_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_text_color Text Color for h1 Header with Background. Defaults to `background_color`. Modifies the `.remark-slide-content h1` class.
 #' @param header_background_padding Padding for h1 Header with Background. Defaults to 2rem 4rem 1.5rem 4rem. Modifies the `.remark-slide-content h1` class.
   header_h1_font_size = "55px",
   header_h2_font_size = "45px",
   header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
   xaringanthemer_version <- utils::packageVersion("xaringanthemer")
   
   # prepare header background object
-  header_background <- if (header_background_enable) {
-    needs_leading_dot <- !grepl("^\\.", header_background_ignore_classes)
-    header_background_ignore_classes[needs_leading_dot] <- paste0(
-      ".", header_background_ignore_classes[needs_leading_dot]
-    )
-    header_background_ignore_classes <- purrr::map(
-      header_background_ignore_classes,
-      ~ list(class = .)
-    )
-    list(
-      background_color = header_background_color,
-      text_color = header_background_text_color,
-      padding = header_background_padding,
-      content_padding_top = header_background_content_padding_top,
-      ignore = header_background_ignore_classes
-    )
-  }
+  needs_leading_dot <- !grepl("^\\.", header_background_ignore_classes)
+  header_background_ignore_classes[needs_leading_dot] <- paste0(
+    ".", header_background_ignore_classes[needs_leading_dot]
+  )
+  header_background_ignore_classes <- purrr::map(
+    header_background_ignore_classes,
+    ~ list(class = .)
+  )
+  header_background <-   list(
+    auto = header_background_auto,
+    background_color = header_background_color,
+    text_color = header_background_text_color,
+    padding = header_background_padding,
+    content_padding_top = header_background_content_padding_top,
+    ignore = header_background_ignore_classes
+  )
   
   tf <- system.file("resources", "template.css", package = "xaringanthemer")
   template <- readLines(tf, warn = FALSE)

inst/resources/template.css

 
 {{#header_background}}
 /* Slide Header Background for h1 elements */
-.remark-slide-content{{#ignore}}:not({{class}}){{/ignore}} > h1 {
+.remark-slide-content.header_background > h1{{#auto}},
+.remark-slide-content{{#ignore}}:not({{class}}){{/ignore}} > h1{{/auto}} {
   display: block;
   position: absolute;
   top: 0;
   margin-top: 0;
   box-sizing: border-box;
 }
-.remark-slide-content{{#ignore}}:not({{class}}){{/ignore}} {
+.remark-slide-content.header_background{{#auto}},
+.remark-slide-content{{#ignore}}:not({{class}}){{/ignore}}{{/auto}} {
   padding-top: {{content_padding_top}};
 }
 

inst/scripts/write_xaringan_theme_body.R

 xaringanthemer_version <- utils::packageVersion("xaringanthemer")
 
 # prepare header background object
-header_background <- if (header_background_enable) {
-  needs_leading_dot <- !grepl("^\\.", header_background_ignore_classes)
-  header_background_ignore_classes[needs_leading_dot] <- paste0(
-    ".", header_background_ignore_classes[needs_leading_dot]
-  )
-  header_background_ignore_classes <- purrr::map(
-    header_background_ignore_classes,
-    ~ list(class = .)
-  )
-  list(
-    background_color = header_background_color,
-    text_color = header_background_text_color,
-    padding = header_background_padding,
-    content_padding_top = header_background_content_padding_top,
-    ignore = header_background_ignore_classes
-  )
-}
+needs_leading_dot <- !grepl("^\\.", header_background_ignore_classes)
+header_background_ignore_classes[needs_leading_dot] <- paste0(
+  ".", header_background_ignore_classes[needs_leading_dot]
+)
+header_background_ignore_classes <- purrr::map(
+  header_background_ignore_classes,
+  ~ list(class = .)
+)
+header_background <-   list(
+  auto = header_background_auto,
+  background_color = header_background_color,
+  text_color = header_background_text_color,
+  padding = header_background_padding,
+  content_padding_top = header_background_content_padding_top,
+  ignore = header_background_ignore_classes
+)
 
 tf <- system.file("resources", "template.css", package = "xaringanthemer")
 template <- readLines(tf, warn = FALSE)

man/duo.Rd

   table_row_even_background_color = lighten_color(primary_color, 0.3),
   text_font_size = "20px", header_h1_font_size = "55px",
   header_h2_font_size = "45px", header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/duo_accent.Rd

   table_row_even_background_color = lighten_color(secondary_color, 0.3),
   text_font_size = "20px", header_h1_font_size = "55px",
   header_h2_font_size = "45px", header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/duo_accent_inverse.Rd

   table_row_even_background_color = darken_color(choose_dark_or_light(primary_color,
   secondary_color, primary_color), 0.3), text_font_size = "20px",
   header_h1_font_size = "55px", header_h2_font_size = "45px",
-  header_h3_font_size = "35px", header_background_enable = FALSE,
+  header_h3_font_size = "35px", header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/mono_accent.Rd

   table_row_even_background_color = lighten_color(base_color, 0.7),
   text_font_size = "20px", header_h1_font_size = "55px",
   header_h2_font_size = "45px", header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/mono_accent_inverse.Rd

   table_row_even_background_color = darken_color(base_color, 0.7),
   text_font_size = "20px", header_h1_font_size = "55px",
   header_h2_font_size = "45px", header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/mono_dark.Rd

   table_row_even_background_color = darken_color(base_color, 0.7),
   text_font_size = "20px", header_h1_font_size = "55px",
   header_h2_font_size = "45px", header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/mono_light.Rd

   table_row_even_background_color = lighten_color(base_color, 0.8),
   text_font_size = "20px", header_h1_font_size = "55px",
   header_h2_font_size = "45px", header_h3_font_size = "35px",
-  header_background_enable = FALSE,
+  header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/solarized_dark.Rd

   table_border_color = "#657b83", table_row_border_color = "#657b83",
   table_row_even_background_color = "#073642", text_font_size = "20px",
   header_h1_font_size = "55px", header_h2_font_size = "45px",
-  header_h3_font_size = "35px", header_background_enable = FALSE,
+  header_h3_font_size = "35px", header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/solarized_light.Rd

   table_border_color = "#839496", table_row_border_color = "#839496",
   table_row_even_background_color = "#eee8d5", text_font_size = "20px",
   header_h1_font_size = "55px", header_h2_font_size = "45px",
-  header_h3_font_size = "35px", header_background_enable = FALSE,
+  header_h3_font_size = "35px", header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

man/write_xaringan_theme.Rd

   table_border_color = "#666", table_row_border_color = "#ddd",
   table_row_even_background_color = "#eee", text_font_size = "20px",
   header_h1_font_size = "55px", header_h2_font_size = "45px",
-  header_h3_font_size = "35px", header_background_enable = FALSE,
+  header_h3_font_size = "35px", header_background_auto = FALSE,
   header_background_color = header_color,
   header_background_text_color = background_color,
   header_background_padding = "2rem 4rem 1.5rem 4rem",
 
 \item{header_h3_font_size}{h3 Header Text Font Size. Defaults to 35px. Modifies the \code{.remark-slide-content h3} class.}
 
-\item{header_background_enable}{Enable Header Background Under First h1 Slide Element. Defaults to \code{FALSE}. Modifies the `` element.}
+\item{header_background_auto}{Add background under slide title automatically for h1 header elements. If not enabled, use \code{class: header_background} to enable.. Defaults to \code{FALSE}.}
 
 \item{header_background_color}{Background Color for h1 Header with Background. Defaults to \code{header_color}. Modifies the \code{.remark-slide-content h1} class.}
 

tests/testthat/css/duo-header_bg.css

 }
 
 /* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1,
 .remark-slide-content:not(.normal):not(.inverse):not(.title):not(.middle):not(.bottom) > h1 {
   display: block;
   position: absolute;
   margin-top: 0;
   box-sizing: border-box;
 }
+.remark-slide-content.header_background,
 .remark-slide-content:not(.normal):not(.inverse):not(.title):not(.middle):not(.bottom) {
   padding-top: 7rem;
 }

tests/testthat/css/duo.css

   color: #FEFDFD !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #F97B64;
+  color: #1F4257;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/css/duo_accent.css

   color: #000000 !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #006747;
+  color: #FFFFFF;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/css/duo_accent_inverse.css

   color: #FFFFFF !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #006747;
+  color: #000000;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/css/mono_accent.css

   color: #272822 !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #43418A;
+  color: #FFFFFF;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/css/mono_accent_inverse.css

   color: #FFFFFF !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #3C989E;
+  color: #050F0F;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/css/mono_dark.css

   color: #F4FDFB !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #cbf7ed;
+  color: #1E2523;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/css/mono_light-header_bg.css

 }
 
 /* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1,
 .remark-slide-content:not(.normal):not(.inverse):not(.title):not(.middle):not(.bottom) > h1 {
   display: block;
   position: absolute;
   margin-top: 0;
   box-sizing: border-box;
 }
+.remark-slide-content.header_background,
 .remark-slide-content:not(.normal):not(.inverse):not(.title):not(.middle):not(.bottom) {
   padding-top: 7rem;
 }

tests/testthat/css/mono_light.css

   color: #18273F !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #23395b;
+  color: #E9EBEE;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/css/solarized_dark-header_bg.css

 }
 
 /* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1,
 .remark-slide-content:not(.normal):not(.inverse):not(.title):not(.middle):not(.bottom) > h1 {
   display: block;
   position: absolute;
   margin-top: 0;
   box-sizing: border-box;
 }
+.remark-slide-content.header_background,
 .remark-slide-content:not(.normal):not(.inverse):not(.title):not(.middle):not(.bottom) {
   padding-top: 7rem;
 }

tests/testthat/css/solarized_dark.css

   color: #839496 !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #dc322f;
+  color: #002b36;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/css/solarized_light.css

   color: #657b83 !important;
 }
 
+/* Slide Header Background for h1 elements */
+.remark-slide-content.header_background > h1 {
+  display: block;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  background: #dc322f;
+  color: #fdf6e3;
+  padding: 2rem 4rem 1.5rem 4rem;
+  margin-top: 0;
+  box-sizing: border-box;
+}
+.remark-slide-content.header_background {
+  padding-top: 7rem;
+}
+
 @page { margin: 0; }
 @media print {
   .remark-slide-scaler {

tests/testthat/test-themes.R

 test_that("solarized_dark()", test_theme_file("solarized_dark"))
 test_that("solarized_light()", test_theme_file("solarized_light"))
 
-test_that("header_background_enable = TRUE", {
-  test_theme_file("duo", "duo-header_bg.css", header_background_enable = TRUE)
-  test_theme_file("mono_light", "mono_light-header_bg.css", header_background_enable = TRUE)
-  test_theme_file("solarized_dark", "solarized_dark-header_bg.css", header_background_enable = TRUE)
+test_that("header_background_auto = TRUE", {
+  test_theme_file("duo", "duo-header_bg.css", header_background_auto = TRUE)
+  test_theme_file("mono_light", "mono_light-header_bg.css", header_background_auto = TRUE)
+  test_theme_file("solarized_dark", "solarized_dark-header_bg.css", header_background_auto = TRUE)
 })