Add Scatter charts

1 files changed, 50 insertions, 0 deletions

diff --git a/lib/axlsx/drawing/scatter_chart.rb b/lib/axlsx/drawing/scatter_chart.rb
new file mode 100644
index 00000000..f257303a
--- /dev/null
+++ b/lib/axlsx/drawing/scatter_chart.rb
@@ -0,0 +1,50 @@
+# encoding: UTF-8
+module Axlsx
+  class ScatterChart < Chart
+    attr_reader :scatterStyle
+
+    # the x value axis
+    # @return [ValAxis]
+    attr_reader :xValAxis
+
+    # the y value axis
+    # @return [ValAxis]
+    attr_reader :yValAxis
+
+    def initialize(frame, options={})
+      @scatterStyle = :lineMarker
+      @xValAxId = rand(8 ** 8)
+      @yValAxId = rand(8 ** 8)
+      @xValAxis = ValAxis.new(@xValAxId, @yValAxId)
+      @yValAxis = ValAxis.new(@yValAxId, @xValAxId)
+      super(frame, options)
+      @series_type = ScatterSeries
+    end
+
+    # Serializes the bar chart
+    # @return [String]
+    def to_xml
+      super() do |xml|
+        xml.scatterChart {
+          xml.scatterStyle :val=>scatterStyle
+
+          # This is all repeated from line_3D_chart.rb!
+          xml.varyColors :val=>1
+          @series.each { |ser| ser.to_xml(xml) }
+          xml.dLbls {
+            xml.showLegendKey :val=>0
+            xml.showVal :val=>0
+            xml.showCatName :val=>0
+            xml.showSerName :val=>0
+            xml.showPercent :val=>0
+            xml.showBubbleSize :val=>0
+          }
+          xml.axId :val=>@xValAxId
+          xml.axId :val=>@yValAxId
+        }
+        @xValAxis.to_xml(xml)
+        @yValAxis.to_xml(xml)
+      end
+    end
+  end
+end