Nothing
compute_grob_widths <- function(grob_layout, widths) {
cols <- split(grob_layout, grob_layout$l)
do.call("unit.c", lapply(cols, compute_grob_dimensions, dims = widths))
}
compute_grob_heights <- function(grob_layout, heights) {
cols <- split(grob_layout, grob_layout$t)
do.call("unit.c", lapply(cols, compute_grob_dimensions, dims = heights))
}
compute_grob_dimensions <- function(grob_layout, dims) {
# If any don't have explicit dims, then width is NULL
if (!any(grob_layout$type %in% names(dims))) {
return(unit(1, "null"))
}
grob_layout <- grob_layout[grob_layout$type %in% names(dims), , drop = FALSE]
dims <- unique(Map(function(type, pos) {
type_width <- dims[[type]]
if (length(type_width) == 1) type_width else type_width[pos]
}, grob_layout$type, grob_layout$id))
units <- vapply(dims, is.unit, logical(1))
if (all(units)) {
if (all(lapply(dims, attr, "unit") == "null")) unit(max(unlist(dims)), "null")
else do.call("max", dims)
} else {
raw_max <- unit(max(unlist(dims[!units])), "cm")
if (any(units)) {
unit_max <- max(do.call("unit.c", dims[units]))
max(raw_max, unit_max)
}
else {
raw_max
}
}
}
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