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geom_textvline.R
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geom_textvline.R
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##---------------------------------------------------------------------------##
## ##
## geom_textvline.R ##
## Part of the geomtextpath R package ##
## ##
## Copyright (C) 2021 - 2022 by Allan Cameron & Teun van den Brand ##
## ##
## Licensed under the MIT license - see https://mit-license.org ##
## or the LICENSE file in the project root directory ##
## ##
##---------------------------------------------------------------------------##
#' @rdname geom_textabline
#' @eval rd_dots(geom_textvline)
#' @param xintercept The value at which the line should intercept the y axis
#' @inheritParams geom_textpath
#' @export
#' @md
geom_textvline <- function(
mapping = NULL,
data = NULL,
xintercept,
stat = "identity",
position = "identity",
...,
arrow = NULL,
lineend = "butt",
na.rm = FALSE,
show.legend = NA,
inherit.aes = TRUE
) {
# Act like an annotation
if (!missing(xintercept)) {
# Warn if supplied mapping and/or data is going to be overwritten
if (!is.null(mapping)) {
warn_overwritten_args("geom_textvline()", "mapping", "xintercept")
}
if (!is.null(data)) {
warn_overwritten_args("geom_textvline()", "data", "xintercept")
data$xintercept <- xintercept
}
mapping <- unclass(mapping)
mapping[["xintercept"]] <- xintercept
class(mapping) <- "uneval"
mapping <- aes(xintercept = xintercept)
show.legend <- FALSE
}
layer(
data = data,
mapping = mapping,
stat = StatIdentity,
geom = GeomTextvline,
position = PositionIdentity,
show.legend = show.legend,
inherit.aes = FALSE,
params = list(
na.rm = na.rm,
arrow = arrow,
lineend = lineend,
...
)
)
}
#' @rdname geom_textabline
#' @format NULL
#' @usage NULL
#' @export
GeomTextvline <- ggproto("GeomTextvline", GeomTextpath,
draw_panel = function(data, panel_params, coord, lineend = "butt",
arrow = arrow,
text_params = static_text_params("label")) {
ranges <- coord$backtransform_range(panel_params)
data$x <- data$xintercept
data$xend <- data$xintercept
data$y <- ranges$y[1]
data$yend <- ranges$y[2]
GeomTextsegment$draw_panel(unique(data), panel_params,
coord, lineend = lineend,
arrow = arrow,
text_params = text_params)
},
required_aes = c("xintercept", "label")
)
#' @rdname geom_textabline
#' @export
geom_labelvline <- function(
mapping = NULL,
data = NULL,
xintercept,
stat = "identity",
position = "identity",
...,
arrow = NULL,
lineend = "butt",
na.rm = FALSE,
show.legend = NA,
inherit.aes = TRUE,
straight = NULL,
label.r = unit(0.15, "lines"),
label.padding = unit(0.25, "lines")
) {
# Act like an annotation
if (!missing(xintercept)) {
# Warn if supplied mapping and/or data is going to be overwritten
if (!is.null(mapping)) {
warn_overwritten_args("geom_labelvline()", "mapping", "xintercept")
}
if (!is.null(data)) {
warn_overwritten_args("geom_labelvline()", "data", "xintercept")
data$xintercept <- xintercept
}
mapping <- unclass(mapping)
mapping[["xintercept"]] <- xintercept
class(mapping) <- "uneval"
mapping <- aes(xintercept = xintercept)
show.legend <- FALSE
}
layer(
data = data,
mapping = mapping,
stat = StatIdentity,
geom = GeomLabelvline,
position = PositionIdentity,
show.legend = show.legend,
inherit.aes = FALSE,
params = set_params(
arrow = arrow,
na.rm = na.rm,
lineend = lineend,
straight = straight,
label.r = label.r,
label.padding = label.padding,
...
)
)
}
#' @rdname geom_textabline
#' @format NULL
#' @usage NULL
#' @export
GeomLabelvline <- ggproto("GeomLabelvline", GeomLabelpath,
draw_panel = function(data, panel_params, coord, lineend = "butt",
text_params = static_text_params("label"), arrow = NULL,
label.padding = unit(0.25, "lines"),
label.r = unit(0.15, "lines")
) {
ranges <- coord$backtransform_range(panel_params)
data$x <- data$xintercept
data$xend <- data$xintercept
data$y <- ranges$y[1]
data$yend <- ranges$y[2]
GeomLabelsegment$draw_panel(unique(data), panel_params,
coord, lineend = lineend,
text_params = text_params,
label.padding = label.padding,
label.r = label.r)
},
required_aes = c("xintercept", "label")
)