Add title_slide_background_color and title_slide_background_position

R/duo.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `secondary_color`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `primary_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to `apply_alpha(secondary_color, 0.6)`
 #' @param left_column_selected_color Left Column Current Selection, defaults to `secondary_color`
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to `apply_alpha(secondary_color, 0.5)`
   title_slide_text_color = secondary_color,
   title_slide_background_color = primary_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(secondary_color, 0.6),
   left_column_selected_color = secondary_color,
   blockquote_left_color = apply_alpha(secondary_color, 0.5),

R/duo_accent.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `choose_dark_or_light(primary_color, black_color, white_color)`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `primary_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to `apply_alpha(primary_color, 0.6)`
 #' @param left_column_selected_color Left Column Current Selection, defaults to `primary_color`
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to `apply_alpha(secondary_color, 0.5)`
   title_slide_text_color = choose_dark_or_light(primary_color, black_color, white_color),
   title_slide_background_color = primary_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(primary_color, 0.6),
   left_column_selected_color = primary_color,
   blockquote_left_color = apply_alpha(secondary_color, 0.5),

R/duo_accent_inverse.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `choose_dark_or_light(primary_color, black_color, white_color)`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `primary_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to `apply_alpha(primary_color, 0.6)`
 #' @param left_column_selected_color Left Column Current Selection, defaults to `primary_color`
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to `apply_alpha(secondary_color, 0.5)`
   title_slide_text_color = choose_dark_or_light(primary_color, black_color, white_color),
   title_slide_background_color = primary_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(primary_color, 0.6),
   left_column_selected_color = primary_color,
   blockquote_left_color = apply_alpha(secondary_color, 0.5),

R/mono_accent.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `inverse_text_color`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `inverse_background_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to `apply_alpha(base_color, 0.6)`
 #' @param left_column_selected_color Left Column Current Selection, defaults to `base_color`
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to `apply_alpha(base_color, 0.5)`
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(base_color, 0.6),
   left_column_selected_color = base_color,
   blockquote_left_color = apply_alpha(base_color, 0.5),

R/mono_accent_inverse.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `inverse_text_color`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `inverse_background_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to `apply_alpha(base_color, 0.6)`
 #' @param left_column_selected_color Left Column Current Selection, defaults to `base_color`
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to `apply_alpha(base_color, 0.5)`
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(base_color, 0.6),
   left_column_selected_color = base_color,
   blockquote_left_color = apply_alpha(base_color, 0.5),

R/mono_dark.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `inverse_text_color`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `inverse_background_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to `apply_alpha(base_color, 0.6)`
 #' @param left_column_selected_color Left Column Current Selection, defaults to `base_color`
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to `apply_alpha(base_color, 0.5)`
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(base_color, 0.6),
   left_column_selected_color = base_color,
   blockquote_left_color = apply_alpha(base_color, 0.5),

R/mono_light.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `inverse_text_color`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `inverse_background_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to `apply_alpha(base_color, 0.6)`
 #' @param left_column_selected_color Left Column Current Selection, defaults to `base_color`
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to `apply_alpha(base_color, 0.5)`
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(base_color, 0.6),
   left_column_selected_color = base_color,
   blockquote_left_color = apply_alpha(base_color, 0.5),

R/solarized_dark.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `inverse_text_color`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `inverse_background_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to #586e75
 #' @param left_column_selected_color Left Column Current Selection, defaults to #93a1a1
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to #cb4b16
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = "#586e75",
   left_column_selected_color = "#93a1a1",
   blockquote_left_color = "#cb4b16",

R/solarized_light.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `inverse_text_color`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `inverse_background_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to #93a1a1
 #' @param left_column_selected_color Left Column Current Selection, defaults to #586e75
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to #cb4b16
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = "#93a1a1",
   left_column_selected_color = "#586e75",
   blockquote_left_color = "#cb4b16",

R/theme_settings.R

   , "title_slide_text_color", "{inverse_text_color}", ".title-slide", "Title Slide Text Color"
   , "title_slide_background_color", "{inverse_background_color}", ".title-slide", "Title Slide Background Color"
   , "title_slide_background_image", NA_character_, ".title-slide", "Title Slide Background Image URL"
+  , "title_slide_background_size", NA_character_, ".title-slide", "Title Slide Background Image Size, defaults to \"cover\" if background image is set"
+  , "title_slide_background_position", NA_character_, ".title-slide", "Title Slide Background Image Position"
   , "left_column_subtle_color", "#777", ".left-column", "Left Column Text (not last)"
   , "left_column_selected_color", "#000", ".left-column h2:last-of-type, .left-column h3:last-child", "Left Column Current Selection"
   , "blockquote_left_color", "lightgray", "blockquote", "Blockquote Left Border Color"

R/write_theme.R

 #' @param title_slide_text_color Title Slide Text Color, defaults to `inverse_text_color`
 #' @param title_slide_background_color Title Slide Background Color, defaults to `inverse_background_color`
 #' @param title_slide_background_image Title Slide Background Image URL, defaults to NA
+#' @param title_slide_background_size Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA
+#' @param title_slide_background_position Title Slide Background Image Position, defaults to NA
 #' @param left_column_subtle_color Left Column Text (not last), defaults to #777
 #' @param left_column_selected_color Left Column Current Selection, defaults to #000
 #' @param blockquote_left_color Blockquote Left Border Color, defaults to lightgray
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
   title_slide_background_image = NA,
+  title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = "#777",
   left_column_selected_color = "#000",
   blockquote_left_color = "lightgray",

inst/resources/template.css

   color: {{inverse_header_color}};
 }
 .title-slide, .title-slide h1, .title-slide h2, .title-slide h3 {
-  background-color: {{title_slide_background_color}};
   color: {{title_slide_text_color}};
+}
+.title-slide {
+  background-color: {{title_slide_background_color}};
   {{ifelse(!is.na(title_slide_background_image), paste0("background-image: url(", title_slide_background_image, ");"), "")}}
-  {{ifelse(!is.na(title_slide_background_image), "background-size: cover;", "")}}
+  {{ifelse(!is.na(title_slide_background_size), paste0("background-size: ", title_slide_background_size, ";"), ifelse(!is.na(title_slide_background_image), "background-size: cover;", ""))}}
+  {{ifelse(!is.na(title_slide_background_position), paste0("background-position: ", title_slide_background_position, ";"), "")}}
 }
 .title-slide .remark-slide-number {
   display: none;

man/duo.Rd

   inverse_header_color = primary_color,
   title_slide_text_color = secondary_color,
   title_slide_background_color = primary_color,
-  title_slide_background_image = NA,
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(secondary_color, 0.6),
   left_column_selected_color = secondary_color,
   blockquote_left_color = apply_alpha(secondary_color, 0.5),
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to \code{apply_alpha(secondary_color, 0.6)}}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to \code{secondary_color}}

man/duo_accent.Rd

   inverse_header_color = choose_dark_or_light(secondary_color, black_color,
   white_color), title_slide_text_color = choose_dark_or_light(primary_color,
   black_color, white_color), title_slide_background_color = primary_color,
-  title_slide_background_image = NA,
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(primary_color, 0.6),
   left_column_selected_color = primary_color,
   blockquote_left_color = apply_alpha(secondary_color, 0.5),
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to \code{apply_alpha(primary_color, 0.6)}}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to \code{primary_color}}

man/duo_accent_inverse.Rd

   inverse_header_color = choose_dark_or_light(secondary_color, black_color,
   white_color), title_slide_text_color = choose_dark_or_light(primary_color,
   black_color, white_color), title_slide_background_color = primary_color,
-  title_slide_background_image = NA,
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(primary_color, 0.6),
   left_column_selected_color = primary_color,
   blockquote_left_color = apply_alpha(secondary_color, 0.5),
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to \code{apply_alpha(primary_color, 0.6)}}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to \code{primary_color}}

man/mono_accent.Rd

   inverse_text_shadow = FALSE, inverse_header_color = white_color,
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
-  title_slide_background_image = NA,
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(base_color, 0.6),
   left_column_selected_color = base_color,
   blockquote_left_color = apply_alpha(base_color, 0.5),
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to \code{apply_alpha(base_color, 0.6)}}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to \code{base_color}}

man/mono_accent_inverse.Rd

   inverse_text_shadow = FALSE, inverse_header_color = black_color,
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
-  title_slide_background_image = NA,
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(base_color, 0.6),
   left_column_selected_color = base_color,
   blockquote_left_color = apply_alpha(base_color, 0.5),
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to \code{apply_alpha(base_color, 0.6)}}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to \code{base_color}}

man/mono_dark.Rd

   inverse_text_shadow = FALSE, inverse_header_color = black_color,
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
-  title_slide_background_image = NA,
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(base_color, 0.6),
   left_column_selected_color = base_color,
   blockquote_left_color = apply_alpha(base_color, 0.5),
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to \code{apply_alpha(base_color, 0.6)}}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to \code{base_color}}

man/mono_light.Rd

   inverse_text_shadow = FALSE, inverse_header_color = white_color,
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
-  title_slide_background_image = NA,
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
   left_column_subtle_color = apply_alpha(base_color, 0.6),
   left_column_selected_color = base_color,
   blockquote_left_color = apply_alpha(base_color, 0.5),
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to \code{apply_alpha(base_color, 0.6)}}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to \code{base_color}}

man/solarized_dark.Rd

   inverse_header_color = inverse_text_color,
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
-  title_slide_background_image = NA, left_column_subtle_color = "#586e75",
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
+  left_column_subtle_color = "#586e75",
   left_column_selected_color = "#93a1a1", blockquote_left_color = "#cb4b16",
   table_border_color = "#657b83", table_row_border_color = "#657b83",
   table_row_even_background_color = "#073642", text_size = "20px",
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to #586e75}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to #93a1a1}

man/solarized_light.Rd

   inverse_header_color = inverse_text_color,
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
-  title_slide_background_image = NA, left_column_subtle_color = "#93a1a1",
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA,
+  left_column_subtle_color = "#93a1a1",
   left_column_selected_color = "#586e75", blockquote_left_color = "#cb4b16",
   table_border_color = "#839496", table_row_border_color = "#839496",
   table_row_even_background_color = "#eee8d5", text_size = "20px",
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to #93a1a1}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to #586e75}

man/write_xaringan_theme.Rd

   inverse_header_color = "#f3f3f3",
   title_slide_text_color = inverse_text_color,
   title_slide_background_color = inverse_background_color,
-  title_slide_background_image = NA, left_column_subtle_color = "#777",
+  title_slide_background_image = NA, title_slide_background_size = NA,
+  title_slide_background_position = NA, left_column_subtle_color = "#777",
   left_column_selected_color = "#000", blockquote_left_color = "lightgray",
   table_border_color = "#666", table_row_border_color = "#ddd",
   table_row_even_background_color = "#eee", text_size = "20px",
 
 \item{title_slide_background_image}{Title Slide Background Image URL, defaults to NA}
 
+\item{title_slide_background_size}{Title Slide Background Image Size, defaults to "cover" if background image is set, defaults to NA}
+
+\item{title_slide_background_position}{Title Slide Background Image Position, defaults to NA}
+
 \item{left_column_subtle_color}{Left Column Text (not last), defaults to #777}
 
 \item{left_column_selected_color}{Left Column Current Selection, defaults to #000}