Tools to Work with the 'Splash' JavaScript Rendering Service in R
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

33 lines
1.3 KiB

#' Return the HTML or image (png) of the javascript-rendered page in a local file
#'
#' The suggested use-case for this is rendering a widget
#'
#' TODO Test if container is running
#' TODO Enable passing in of an htmlwidget and use saveWidget
#'
#' @md
#' @param splash_obj Object created by a call to [splash]()
#' @param file_path Absolute path to a filename on the local host. **This only works with a locally running Splash instance started with [start_splash]().**
#' @param output either `html` or `png` to get the page content or an image capture
#' @param viewport View width and height (in pixels) of the browser viewport to render the web page. Format is "`<width>x<height>`". e.g. 800x600. Default value is 1024x768.
#' @param ... other params to [render_html]() or [render_png]()
#' @return An XML document or `magick` object
#' @export
render_file <- function(splash_obj = slpash_local, file_path, output=c("html", "png"), wait=0, viewport="1024x768", ...) {
output <- match.arg(output, c("html", "png"))
file.copy(file_path, .pkgenv$temp_dir)
fil <- basename(file_path)
URL <- sprintf("http://localhost:9999/%s", fil)
if (output == "html") {
render_html(splash_obj, URL, wait=wait, viewport=viewport, ...)
} else {
render_png(splash_obj, URL, wait=wait, viewport=viewport, ...)
}
}