remove sparklines dependency, replace with staticly generated pie charts, added script/pie.rb to easily regenerate them if necessary

git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/trunk@510399 13f79535-47bb-0310-9956-ffa450edef68

client/ruby/flare/app/controllers/sparklines_controller.rb

@@ -1,40 +0,0 @@
-class SparklinesController < ApplicationController
-
-  # Handles requests for sparkline graphs from views.
-  #
-  # Params are generated by the sparkline_tag helper method.
-  #
-	def index
-		# Make array from comma-delimited list of data values
-		ary = []
-		if params.has_key?('results') && !params['results'].nil?
-		  params['results'].split(',').each do |s|
-			  ary << s.to_i
-		  end
-		end
-		
-		send_data( Sparklines.plot( ary, params ), 
-					:disposition => 'inline',
-					:type => 'image/png',
-					:filename => "spark_#{params[:type]}.png" )
-	end
-
-
-  # Use this type of method for sparklines that can be cached. (Doesn't work with the helper.)
-  #
-  # To make caching easier, add a line like this to config/routes.rb:
-  # map.sparklines "sparklines/:action/:id/image.png", :controller => "sparklines"
-  #
-  # Then reference it with the named route:
-  #   image_tag sparklines_url(:action => 'show', :id => 42)
-  def show
-    send_data(Sparklines.plot(
-                [42, 37, 89, 74, 70, 50, 40, 30, 40, 50],
-                :type => 'bar', :above_color => 'orange'
-              ), 
-              :disposition => 'inline', 
-              :type => 'image/png', 
-              :filename => "sparkline.png")
-  end
-
-end

client/ruby/flare/app/views/browse/index.rhtml

@@ -11,7 +11,7 @@
   <ul>
   <% @response.field_facets(field).each do |f| %>
     <li>
-      <%= sparkline_tag [(f.value * 100.0 / @response.total_hits).ceil], :type => 'pie', :diameter => 20, :share_color => 'blue'%>
+      <%= image_tag "pie_#{(f.value * 100.0 / @response.total_hits).ceil}.png"%>
       <%= link_to "#{f.name} (#{f.value})", :action => 'add_filter', :field_name=>field, :value=>f.name%>
     </li>
   <% end %>