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check_gtable <- function(x,
...,
allow_null = FALSE,
arg = caller_arg(x),
call = caller_env()) {
if (!missing(x)) {
if (is.gtable(x)) {
return(invisible(NULL))
}
if (allow_null && is_null(x)) {
return(invisible(NULL))
}
}
stop_input_type(
x,
"a gtable object",
...,
allow_null = allow_null,
arg = arg,
call = call
)
}
check_unit <- function(x,
...,
allow_null = FALSE,
arg = caller_arg(x),
call = caller_env()) {
if (!missing(x)) {
if (is.unit(x)) {
return(invisible(NULL))
}
if (allow_null && is_null(x)) {
return(invisible(NULL))
}
}
stop_input_type(
x,
"a unit vector",
...,
allow_null = allow_null,
arg = arg,
call = call
)
}
neg_to_pos <- function(x, max) {
ifelse(x >= 0, x, max + 1 + x)
}
compare_unit <- function(x, y, comp = `=`) {
if (length(y) == 0) return(x)
if (length(x) == 0) return(y)
if (getRversion() >= "3.6" && (is.list(x) || is.list(y))) {
if (identical(comp, pmin)) {
return(unit.pmin(x, y))
}
if (identical(comp, pmax)) {
return(unit.pmax(x, y))
}
cli::cli_abort('comparison not supported')
}
# Below should be removed once the old grid unit implementation has been deprecated
x_attr <- attributes(x)
x_val <- unclass(x)
y_val <- unclass(y)
x_unit <- x_attr$unit
y_unit <- attr(x, "unit")
if (!all(x_unit == y_unit)) {
cli::cli_abort("comparison of units with different types currently not supported")
}
`attributes<-`(comp(x_val, y_val), x_attr)
}
insert.unit <- function(x, values, after = length(x)) {
lengx <- length(x)
if (lengx == 0) return(values)
if (length(values) == 0) return(x)
if (after <= 0) {
unit.c(values, x)
} else if (after >= lengx) {
unit.c(x, values)
} else {
unit.c(x[1L:after], values, x[(after + 1L):lengx])
}
}
"%||%" <- function(a, b) {
if (!is.null(a)) a else b
}
width_cm <- function(x) {
if (is.grob(x)) {
convertWidth(grobWidth(x), "cm", TRUE)
} else if (is.list(x)) {
vapply(x, width_cm, numeric(1))
} else if (is.unit(x)) {
convertWidth(x, "cm", TRUE)
} else {
cli::cli_abort("Unknown input")
}
}
height_cm <- function(x) {
if (is.grob(x)) {
convertWidth(grobHeight(x), "cm", TRUE)
} else if (is.list(x)) {
vapply(x, height_cm, numeric(1))
} else if (is.unit(x)) {
convertHeight(x, "cm", TRUE)
} else {
cli::cli_abort("Unknown input")
}
}
# Check that x is same length as g, or length 1
len_same_or_1 <- function(x, n) {
length(x) == 1 || length(x) == n
}
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