R/toXML2_graphs.R

In IFC: Tools for Imaging Flow Cytometry

################################################################################
# This file is released under the GNU General Public License, Version 3, GPL-3 #
# Copyright (C) 2020 Yohann Demont                                             #
#                                                                              #
# It is part of IFC package, please cite:                                      #
# -IFC: An R Package for Imaging Flow Cytometry                                #
# -YEAR: 2020                                                                  #
# -COPYRIGHT HOLDERS: Yohann Demont, Gautier Stoll, Guido Kroemer,             #
#                     Jean-Pierre Marolleau, Loïc Garçon,                      #
#                     INSERM, UPD, CHU Amiens                                  #
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# DISCLAIMER:                                                                  #
# -You are using this package on your own risk!                                #
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################################################################################

#' @title IFC_graphs XML Conversion
#' @description 
#' Helper to convert graphs (`IFC_graphs` object) to XML nodes.
#' @param graphs an `IFC_graphs` object.
#' @param verbose whether to display message about current action. Default is FALSE.
#' @return a xml_node.
#' @keywords internal
toXML2_graphs = function(graphs, verbose = FALSE) {
  assert(verbose, alw = c(TRUE, FALSE))
  if(verbose) message("creating graphs node")
  assert(graphs, cla = "IFC_graphs")
  if(length(graphs)==0) return(xml_new_node(name = "Displays", text = ""))
  graphs = graphs[sapply(graphs, length) != 0] 
  graphs = lapply(graphs, FUN=function(g) {
    g$GraphRegion = lapply(g$GraphRegion, FUN = function(x) x[!grepl("def", names(x))]) # it is mandatory to remove def
    g = lapply(g, FUN = function(x) {
      if(typeof(x) %in% c("integer","double")) {
        return(num_to_string(x))
      } else {
        return(x)
      }
    })
    if((length(g$maxpoints) != 0) && ((g$maxpoints == +Inf) || (g$maxpoints == 1))) g$maxpoints=NULL
    g = g[sapply(g, length) != 0] # to remove empty values (e.g. xtrans, ytrans)
    g
  })
  lapply(graphs, FUN=function(i_graph) {
    do.call(what = buildGraph, args = i_graph[!grepl("order", names(i_graph))])
    xml_new_node(name = "Graph", attrs = i_graph[!grepl("Legend|BasePop|GraphRegion|ShownPop", names(i_graph))],
                 .children = c(lapply(i_graph[["Legend"]], FUN=function(i) xml_new_node(name = "Legend", attrs = i)),
                               lapply(i_graph[["BasePop"]], FUN=function(i) {
                                 if(length(i$densitytrans) != 0 && (i$densitytrans == "return" || i$densitytrans == "")) i = i[names(i) != "densitytrans"]
                                 xml_new_node(name = "BasePop", attrs = i)
                               }),
                               lapply(i_graph[["GraphRegion"]], FUN=function(i) xml_new_node(name = "GraphRegion", attrs = i)),
                               lapply(i_graph[["ShownPop"]], FUN=function(i) xml_new_node(name = "ShownPop", attrs = i))))
  })
}