chart.rb in write_xlsx-0.70.0

- old
+ new

@@ -573,10 +573,11 @@
       @x_scale           = 1
       @y_scale           = 1
       @x_offset          = 0
       @y_offset          = 0
       @table             = nil
+      @smooth_allowed    = 0
 
       set_default_properties
     end
 
     def set_xml_writer(filename)   # :nodoc:
@@ -1116,10 +1117,13 @@
       marker = marker_properties(params[:marker])
 
       # Set the trendline properties for the series.
       trendline = trendline_properties(params[:trendline])
 
+      # Set the line smooth property for the series.
+      smooth = params[:smooth]
+
       # Set the error bars properties for the series.
       y_error_bars = error_bars_properties(params[:y_error_bars])
       x_error_bars = error_bars_properties(params[:x_error_bars])
 
       # Set the point properties for the series.
@@ -1156,10 +1160,11 @@
         :_cat_data_id   => cat_id,
         :_line          => line,
         :_fill          => fill,
         :_marker        => marker,
         :_trendline     => trendline,
+        :_smooth        => smooth,
         :_labels        => labels,
         :_invert_if_neg => invert_if_neg,
         :_x2_axis       => x2_axis,
         :_y2_axis       => y2_axis,
         :_points        => points,
@@ -1279,10 +1284,11 @@
     #     name
     #     size
     #     bold
     #     italic
     #     underline
+    #     rotation
     #     color
     #
     # The following explains the available font properties:
     #
     # ===name
@@ -1308,10 +1314,17 @@
     # ===underline
     # Set the font underline property, should be 0 or 1:
     #
     #     chart.set_x_axis( :num_font => { :underline => 1 } )
     #
+    # ===rotation
+    # See the font rotation in the range -90 to 90:
+    #
+    #     chart.set_x_axis(:num_font => { :rotation => 45 })
+    #
+    # This is useful for displaying large axis data such as dates in a more compact format.
+    #
     # ===color
     # Set the font color property. Can be a color index, a color name or HTML
     # style RGB colour:
     #
     #     chart.set_x_axis( :num_font => { :color => 'red' } )
@@ -2572,10 +2585,12 @@
         write_error_bars(series[:_error_bars])
         # Write the c:cat element.
         write_cat(series)
         # Write the c:val element.
         write_val(series)
+        # Write the c:smooth element.
+        write_c_smooth(series[:_smooth]) if ptrue?(@smooth_allowed)
       end
     end
 
     #
     # Write the <c:idx> element.
@@ -4147,9 +4162,20 @@
     #
     # Write the <c:upBars> element.
     #
     def write_down_bars(format)
       write_bars_base('c:downBars', format)
+    end
+
+    #
+    # Write the <c:smooth> element.
+    #
+    def write_c_smooth(smooth)
+      return unless ptrue?(smooth)
+
+      attributes = ['val', 1]
+
+      @writer.empty_tag('c:smooth', attributes)
     end
 
     def write_bars_base(tag, format)
       if ptrue?(format[:_line][:_defined]) || ptrue?(format[:_fill][:_defined])
         @writer.tag_elements(tag) { write_sp_pr(format) }