Add support for bubble charts

1 files changed, 71 insertions, 0 deletions

diff --git a/lib/axlsx/drawing/bubble_series.rb b/lib/axlsx/drawing/bubble_series.rb
new file mode 100644
index 00000000..161a9a9e
--- /dev/null
+++ b/lib/axlsx/drawing/bubble_series.rb
@@ -0,0 +1,71 @@
+# encoding: UTF-8
+module Axlsx
+
+  # A BubbleSeries defines the x/y position and bubble size of data in the chart
+  # @note The recommended way to manage series is to use Chart#add_series
+  # @see Worksheet#add_chart
+  # @see Chart#add_series
+  # @see examples/example.rb
+  class BubbleSeries < Series
+
+    # The x data for this series.
+    # @return [AxDataSource]
+    attr_reader :xData
+
+    # The y data for this series.
+    # @return [NumDataSource]
+    attr_reader :yData
+
+    # The bubble size for this series.
+    # @return [NumDataSource]
+    attr_reader :bubbleSize
+
+    # The fill color for this series.
+    # Red, green, and blue is expressed as sequence of hex digits, RRGGBB. A perceptual gamma of 2.2 is used.
+    # @return [String]
+    attr_reader :color
+
+    # Creates a new BubbleSeries
+    def initialize(chart, options={})
+      @xData, @yData, @bubbleSize = nil
+      super(chart, options)
+      @xData = AxDataSource.new(:tag_name => :xVal, :data => options[:xData]) unless options[:xData].nil?
+      @yData = NumDataSource.new({:tag_name => :yVal, :data => options[:yData]}) unless options[:yData].nil?
+      @bubbleSize = NumDataSource.new({:tag_name => :bubbleSize, :data => options[:bubbleSize]}) unless options[:bubbleSize].nil?
+    end
+
+    # @see color
+    def color=(v)
+      @color = v
+    end
+
+    # Serializes the object
+    # @param [String] str
+    # @return [String]
+    def to_xml_string(str = '')
+      super(str) do |inner_str|
+        # needs to override the super color here to push in ln/and something else!
+        if color
+          str << '<c:spPr><a:solidFill>'
+          str << '<a:srgbClr val="' << color << '"/>'
+          str << '</a:solidFill>'
+          str << '<a:ln><a:solidFill>'
+          str << '<a:srgbClr val="' << color << '"/></a:solidFill></a:ln>'
+          str << '</c:spPr>'
+          str << '<c:marker>'
+          str << '<c:spPr><a:solidFill>'
+          str << '<a:srgbClr val="' << color << '"/>'
+          str << '</a:solidFill>'
+          str << '<a:ln><a:solidFill>'
+          str << '<a:srgbClr val="' << color << '"/></a:solidFill></a:ln>'
+          str << '</c:spPr>'
+          str << '</c:marker>'
+        end
+        @xData.to_xml_string(inner_str) unless @xData.nil?
+        @yData.to_xml_string(inner_str) unless @yData.nil?
+        @bubbleSize.to_xml_string(inner_str) unless @bubbleSize.nil?
+      end
+      str
+    end
+  end
+end