Added line specification

Required by Libre and Open office, and correct by spec. When we get a
requirement to customize the line width/shape this should be extracted
out into a Line class.

1 files changed, 9 insertions, 3 deletions

diff --git a/lib/axlsx/drawing/line_series.rb b/lib/axlsx/drawing/line_series.rb
index 467dcc2d..b011e0b6 100644
--- a/lib/axlsx/drawing/line_series.rb
+++ b/lib/axlsx/drawing/line_series.rb
@@ -51,13 +51,19 @@ module Axlsx
     # @return [String]
     def to_xml_string(str = '')
       super(str) do
-        str << '<c:marker><c:symbol val="none"/></c:marker>' unless @show_marker
         if color
           str << '<c:spPr><a:solidFill>'
           str << '<a:srgbClr val="' << color << '"/>'
-          str << '</a:solidFill></c:spPr>'
+          str << '</a:solidFill>'
+          str << '<a:ln w="28800">'
+          str << '<a:solidFill>'
+          str << '<a:srgbClr val="' << color << '"/>'
+          str << '</a:solidFill>'
+          str << '</a:ln>'
+          str << '<a:round/>'
+          str << '</c:spPr>'
         end
-
+        str << '<c:marker><c:symbol val="none"/></c:marker>' unless @show_marker
         @labels.to_xml_string(str) unless @labels.nil?
         @data.to_xml_string(str) unless @data.nil?
       end