Add renderDelay option

Author: marcbachmann

lib/scripts/pdf_a4_portrait.js

@@ -53,11 +53,21 @@ setTimeout(function () {
 
 // Completely load page & end process
 // ----------------------------------
+var rendered = false
+var renderTimeout
+
+// If renderDelay is manual, then listen for an event and don't automatically render
 if (options.renderDelay === 'manual') page.onCallback = renderNow
-else if (typeof options.renderDelay === 'number') setTimeout(renderNow, options.renderDelay)
-else page.onLoadFinished = renderNow
+
+page.onLoadFinished = function () {
+  if (typeof options.renderDelay === 'manual') return
+  renderTimeout = setTimeout(renderNow, Math.floor(options.renderDelay) || 0)
+}
 
 function renderNow () {
+  if (rendered) return
+  rendered = true
+  clearTimeout(renderTimeout)
   page.paperSize = definePaperSize(getContent(page), options)
 
   var fileOptions = {
@@ -151,8 +161,7 @@ function createSection (section, content, options) {
   options = options[section] || {}
   var c = content[section] || {}
   var o = options.contents
-  var _paginationOffset = Math.floor(options.paginationOffset)
-  var paginationOffset = isNaN(options.paginationOffset) ? 0 : _paginationOffset
+  var paginationOffset = Math.floor(options.paginationOffset) || 0
 
   if (typeof o !== 'object') o = {default: o}