issue #26 & #66
diff --git a/R/row_spec.R b/R/row_spec.R
index 3cd4808..f45cb3d 100644
--- a/R/row_spec.R
+++ b/R/row_spec.R
@@ -1,8 +1,7 @@
#' Specify the look of the selected row
#'
#' @description This function allows users to select a row and then specify
-#' its look. Right now it supports the following two properties: bold text and
-#' italic text.
+#' its look. It can also specify the format of the header row when `row` = 0.
#'
#' @param kable_input Output of `knitr::kable()` with `format` specified
#' @param row A numeric value or vector indicating which row(s) to be selected. You don't
@@ -13,10 +12,13 @@
#' need to be emphasized.
#' @param monospace A T/F value to control whether the text of the selected column
#' need to be monospaced (verbatim)
-#' @param color A character string for column text color. Here please pay
+#' @param color A character string for row text color. Here please pay
#' attention to the differences in color codes between HTML and LaTeX.
-#' @param background A character string for column background color. Here please
+#' @param background A character string for row background color. Here please
#' pay attention to the differences in color codes between HTML and LaTeX.
+#' @param align A character string for cell alignment. For HTML, possible values could
+#' be `l`, `c`, `r` plus `left`, `center`, `right`, `justify`, `initial` and `inherit`
+#' while for LaTeX, you can only choose from `l`, `c` & `r`.
#'
#' @examples x <- knitr::kable(head(mtcars), "html")
#' row_spec(x, 1:2, bold = TRUE, italic = TRUE)
@@ -24,7 +26,7 @@
#' @export
row_spec <- function(kable_input, row,
bold = FALSE, italic = FALSE, monospace = FALSE,
- color = NULL, background = NULL) {
+ color = NULL, background = NULL, align = NULL) {
if (!is.numeric(row)) {
stop("row must be numeric. ")
}
@@ -35,50 +37,49 @@
}
if (kable_format == "html") {
return(row_spec_html(kable_input, row, bold, italic, monospace,
- color, background))
+ color, background, align))
}
if (kable_format == "latex") {
return(row_spec_latex(kable_input, row, bold, italic, monospace,
- color, background))
+ color, background, align))
}
}
row_spec_html <- function(kable_input, row, bold, italic, monospace,
- color, background) {
+ color, background, align) {
kable_attrs <- attributes(kable_input)
kable_xml <- read_kable_as_xml(kable_input)
- kable_tbody <- xml_tpart(kable_xml, "tbody")
- group_header_rows <- attr(kable_input, "group_header_rows")
- if (!is.null(group_header_rows)) {
- row <- positions_corrector(row, group_header_rows,
- length(xml_children(kable_tbody)))
+ if (!is.null(align)) {
+ if (align %in% c("l", "c", "r")) {
+ align <- switch(align, r = "right", c = "center", l = "left")
+ }
}
- for (j in row) {
- target_row <- xml_child(kable_tbody, j)
- for (i in 1:length(xml_children(target_row))) {
- target_cell <- xml_child(target_row, i)
- if (bold) {
- xml_attr(target_cell, "style") <- paste0(xml_attr(target_cell, "style"),
- "font-weight: bold;")
- }
- if (italic) {
- xml_attr(target_cell, "style") <- paste0(xml_attr(target_cell, "style"),
- "font-style: italic;")
- }
- if (monospace) {
- xml_attr(target_cell, "style") <- paste0(xml_attr(target_cell, "style"),
- "font-family: monospace;")
- }
- if (!is.null(color)) {
- xml_attr(target_cell, "style") <- paste0(xml_attr(target_cell, "style"),
- "color: ", color, ";")
- }
- if (!is.null(background)) {
- xml_attr(target_cell, "style") <- paste0(xml_attr(target_cell, "style"),
- "background-color: ",
- background, ";")
+ if (0 %in% row) {
+ kable_thead <- xml_tpart(kable_xml, "thead")
+ original_header_row <- xml_child(kable_thead, length(xml_children(kable_thead)))
+ for (theader_i in 1:length(xml_children(original_header_row))) {
+ target_header_cell <- xml_child(original_header_row, theader_i)
+ xml_cell_style(target_header_cell, bold, italic, monospace, color, background, align)
+ }
+ row <- row[row != 0]
+ }
+
+ if (length(row) != 0) {
+ kable_tbody <- xml_tpart(kable_xml, "tbody")
+
+ group_header_rows <- attr(kable_input, "group_header_rows")
+ if (!is.null(group_header_rows)) {
+ row <- positions_corrector(row, group_header_rows,
+ length(xml_children(kable_tbody)))
+ }
+
+ for (j in row) {
+ target_row <- xml_child(kable_tbody, j)
+ for (i in 1:length(xml_children(target_row))) {
+ target_cell <- xml_child(target_row, i)
+ xml_cell_style(target_cell, bold, italic, monospace, color, background, align)
}
}
}
@@ -88,15 +89,44 @@
return(out)
}
+xml_cell_style <- function(x, bold, italic, monospace, color, background, align) {
+ if (bold) {
+ xml_attr(x, "style") <- paste0(xml_attr(x, "style"),
+ "font-weight: bold;")
+ }
+ if (italic) {
+ xml_attr(x, "style") <- paste0(xml_attr(x, "style"),
+ "font-style: italic;")
+ }
+ if (monospace) {
+ xml_attr(x, "style") <- paste0(xml_attr(x, "style"),
+ "font-family: monospace;")
+ }
+ if (!is.null(color)) {
+ xml_attr(x, "style") <- paste0(xml_attr(x, "style"),
+ "color: ", color, ";")
+ }
+ if (!is.null(background)) {
+ xml_attr(x, "style") <- paste0(xml_attr(x, "style"),
+ "background-color: ",
+ background, ";")
+ }
+ if (!is.null(align)) {
+ xml_attr(x, "style") <- paste0(xml_attr(x, "style"),
+ "text-align: ", align, ";")
+ }
+ return(x)
+}
+
row_spec_latex <- function(kable_input, row, bold, italic, monospace,
- color, background) {
+ color, background, align) {
table_info <- magic_mirror(kable_input)
out <- enc2utf8(as.character(kable_input))
row <- row + 1
for (i in row) {
target_row <- table_info$contents[i]
new_row <- latex_new_row_builder(target_row, bold, italic, monospace,
- color, background)
+ color, background, align)
out <- sub(target_row, new_row, out, perl = T)
}
@@ -106,7 +136,7 @@
}
latex_new_row_builder <- function(target_row, bold, italic, monospace,
- color, background) {
+ color, background, align) {
new_row <- latex_row_cells(target_row)
if (bold) {
new_row <- lapply(new_row, function(x) {
@@ -129,11 +159,19 @@
paste0("\\\\textcolor{", color, "}{", x, "}")
})
}
+
+ if (!is.null(align)) {
+ new_row <- lapply(new_row, function(x) {
+ paste0("\\\\multicolumn{1}{", align, "}{", x, "}")
+ })
+ }
new_row <- paste(unlist(new_row), collapse = " & ")
if (!is.null(background)) {
new_row <- paste0("\\\\rowcolor{", background, "} ", new_row)
}
+
+
return(new_row)
}