Add support for bubble charts

1 files changed, 59 insertions, 0 deletions

diff --git a/lib/axlsx/drawing/bubble_chart.rb b/lib/axlsx/drawing/bubble_chart.rb
new file mode 100644
index 00000000..2f2c4595
--- /dev/null
+++ b/lib/axlsx/drawing/bubble_chart.rb
@@ -0,0 +1,59 @@
+# encoding: UTF-8
+module Axlsx
+
+  # The BubbleChart allows you to insert a bubble chart into your worksheet
+  # @see Worksheet#add_chart
+  # @see Chart#add_series
+  # @see README for an example
+  class BubbleChart < Chart
+
+    include Axlsx::OptionsParser
+
+    # the x value axis
+    # @return [ValAxis]
+    def x_val_axis
+      axes[:x_val_axis]
+    end
+    alias :xValAxis :x_val_axis
+
+    # the y value axis
+    # @return [ValAxis]
+    def y_val_axis
+      axes[:y_val_axis]
+    end
+    alias :yValAxis :y_val_axis
+
+    # Creates a new bubble chart
+    def initialize(frame, options={})
+      @vary_colors = 0
+
+           super(frame, options)
+      @series_type = BubbleSeries
+      @d_lbls = nil
+      parse_options options
+    end
+
+    # Serializes the object
+    # @param [String] str
+    # @return [String]
+    def to_xml_string(str = '')
+      super(str) do |str_inner|
+        str_inner << '<c:bubbleChart>'
+        str_inner << '<c:varyColors val="' << vary_colors.to_s << '"/>'
+        @series.each { |ser| ser.to_xml_string(str_inner) }
+        d_lbls.to_xml_string(str_inner) if @d_lbls
+        axes.to_xml_string(str_inner, :ids => true)
+        str_inner << '</c:bubbleChart>'
+        axes.to_xml_string(str_inner)
+      end
+      str
+    end
+
+    # The axes for the bubble chart. BubbleChart has an x_val_axis and
+    # a y_val_axis
+    # @return [Axes]
+    def axes
+      @axes ||= Axes.new(:x_val_axis => ValAxis, :y_val_axis => ValAxis)
+    end
+  end
+end