Merge jdong

[selectricity] / app / controllers / graph_controller.rb

diff --git a/app/controllers/graph_controller.rb b/app/controllers/graph_controller.rb
index c72da85a6dea19732d070710ff42fb330fbc2c1a..b019aeb52b91e230eab971af3b4e47d8ccf5a1ac 100644 (file)
--- a/app/controllers/graph_controller.rb
+++ b/app/controllers/graph_controller.rb
@@ -1,16 +1,36 @@
 require 'date'
 class GraphController < ApplicationController  
   class GruffGraff
-  
+    
+    COLORS = ['#74CE00', '#005CD9', '#DC0D13', '#131313', '#990033']
+    BACKGROUND_COLORS = ['#74CE00', '#FFFFFF'] #for green and white background
+    
     def initialize(options)
-      size = "700x400"
+      size = options[:size] ? options[:size] : "400x300" #allow custom sizing
       @graph = options[:graph_type].new(size)
-
-      @graph.theme = { :colors => ['#000000', '#00FFFF', '#FFCC00', '#990033'],
-                       :background_colors => ['#74ce00', '#ffffff'] }
+      
+      @graph.no_data_message = "No Voters"
+      
+      @graph.theme = { :colors => COLORS,
+                       :background_colors => ['#e5e5e5', '#FFFFFF']  }
       @graph.font = File.expand_path('/usr/X11R6/lib/X11/fonts/TTF/Vera.ttf',
                                    RAILS_ROOT)
       
+      if options[:legend_font_size]
+        @graph.legend_font_size = options[:legend_font_size] 
+      end
+      
+      if options[:title_font_size]  
+        @graph.title_font_size = options[:title_font_size]
+      end
+      
+      #marker count doesn't include minimum value line, default is 4
+      @graph.marker_count = options[:marker_count] if options[:marker_count]
+      
+      @graph.marker_font_size = options[:marker_font_size] if options[:marker_font_size]
+      
+      @graph.marker_color = options[:marker_color] if options[:marker_color]
+      
       # fill in the data with the optional data name
       #Check to see if multiple datasets, if so, fill them all!
       #Sort by biggest first piece of data.
@@ -72,6 +92,12 @@ class GraphController < ApplicationController
                             :data => data,
                             :interval_labels => labels,
                             :title => "Voters Over Time",
+                            :size => "330x232", 
+                            :legend_font_size => 40,
+                            :title_font_size => 50,
+                            :marker_count => 2,
+                            :marker_font_size => 30,
+                            :marker_color => '#999999',
                             :x_axis_label => scale,
                             :y_axis_label => "Number of Votes")
     send_data(*graph.output)
@@ -87,6 +113,7 @@ class GraphController < ApplicationController
                             :data => data,
                             :interval_labels => labels,
                             :title => "Points Per Candidate",
+                            :marker_color => '#999999',
                             :y_axis_label => "Points",
                             :x_axis_label => "Candidate")
     send_data(*graph.output)
@@ -121,12 +148,21 @@ class GraphController < ApplicationController
   
   def plurality_pie
     @election = Election.find(params[:id])
+    @election.results unless @election.plurality_result || @election.approval_result
+    votes = @election.votes.size
+    data = Hash.new
+    names = @election.names_by_id
     
-    
-    
-    pie = GruffGraff.new ( :graph_type => Gruff::Pie,
-                           :data =>   ,
-                           :title => "Percentage of First Plce Votes")
+    @election.plurality_result.points.each do |candidate, votes|
+      data[names[candidate]] = votes
+    end
+     
+    pie = GruffGraff.new( :graph_type => Gruff::Pie,
+                           :title => "Percentage of First Place Votes",
+                           :data => data)
+    send_data(*pie.output)
+                           
+  end
   
  private 
   def get_positions_info(election)
@@ -246,15 +282,15 @@ class GraphController < ApplicationController
     # Create the hash for the labels. Each graph has ten columns, and three
     # will be labeled
     if timedelta < 2.hours #under two hours use minutes for labels
-      labels_hash[0] = starttime.min.to_s
-      labels_hash[(numcols/2)-1] = (starttime + (timedelta/2)).min.to_s
-      labels_hash[numcols-1] = Time.now.min.to_s
-      interval_type = "Minute of the Hour"
+      labels_hash[0] = "Start"
+      labels_hash[(numcols/2)-1] = fmt_decimal((timedelta/120)) #halfway
+      labels_hash[numcols-1] = fmt_decimal((timedelta/60))
+      interval_type = "Minutes After Start"
     elsif timedelta < 2.days #more than 2 hours means use hours for labels
-      labels_hash[0] = starttime.hour.to_s
-      labels_hash[(numcols/2)-1] = (starttime + (timedelta/2)).hour.to_s
-      labels_hash[numcols-1] = Time.now.hour.to_s
-      interval_type = "Hour of the Day on 24 hour scale"
+      labels_hash[0] = "Start"
+      labels_hash[(numcols/2)-1] = fmt_decimal((timedelta/7200))
+      labels_hash[numcols-1] = fmt_decimal((timedelta/3600))
+      interval_type = "Hours After Start (Up to 48)"
     else #more than 2 days means use dates for labels
       labels_hash[0] = (Date.parse(starttime.to_s)).to_s
       labels_hash[(numcols/2)-1] = (Date.parse((starttime + (timedelta/2)).to_s)).to_s
@@ -266,6 +302,10 @@ class GraphController < ApplicationController
     return total_per_interval, labels_hash, interval_type   
   end
   
+  def fmt_decimal(number)
+    sprintf( "%0.1f", number)
+  end
+  
   def get_borda_points(result)
     points = Array.new
     labels = Hash.new
@@ -294,5 +334,4 @@ class GraphController < ApplicationController
     end
   return preference_tally
   end
-
 end