# File lib/gruff/side_stacked_bar.rb, line 14
14:   def draw
15:     @has_left_labels = true
16:     get_maximum_by_stack
17:     super
18: 
19:     return unless @has_data
20: 
21:     # Setup spacing.
22:     #
23:     # Columns sit stacked.
24:     @bar_spacing ||= 0.9
25: 
26:     @bar_width = @graph_height / @column_count.to_f
27:     @d = @d.stroke_opacity 0.0
28:     height = Array.new(@column_count, 0)
29:     length = Array.new(@column_count, @graph_left)
30:     padding = (@bar_width * (1 - @bar_spacing)) / 2
31: 
32:     @norm_data.each_with_index do |data_row, row_index|
33:       @d = @d.fill data_row[DATA_COLOR_INDEX]
34: 
35:       data_row[DATA_VALUES_INDEX].each_with_index do |data_point, point_index|
36: 
37:           ## using the original calcs from the stacked bar chart to get the difference between
38:           ## part of the bart chart we wish to stack.
39:           temp1 = @graph_left + (@graph_width -
40:                                     data_point * @graph_width - 
41:                                     height[point_index]) + 1
42:           temp2 = @graph_left + @graph_width - height[point_index] - 1
43:           difference = temp2 - temp1
44: 
45:           left_x = length[point_index] #+ 1
46:               left_y = @graph_top + (@bar_width * point_index) + padding
47:           right_x = left_x + difference
48:               right_y = left_y + @bar_width * @bar_spacing
49:           length[point_index] += difference
50:         height[point_index] += (data_point * @graph_width - 2)
51: 
52:         @d = @d.rectangle(left_x, left_y, right_x, right_y)
53: 
54:         # Calculate center based on bar_width and current row
55:         label_center = @graph_top + (@bar_width * point_index) + (@bar_width * @bar_spacing / 2.0)
56:         draw_label(label_center, point_index)
57:       end
58: 
59:     end
60: 
61:     @d.draw(@base_image)    
62:   end

    # File lib/gruff/side_stacked_bar.rb, line 66
66:   def larger_than_max?(data_point, index=0)
67:     max(data_point, index) > @maximum_value
68:   end

    # File lib/gruff/side_stacked_bar.rb, line 70
70:   def max(data_point, index)
71:     @data.inject(0) {|sum, item| sum + item[DATA_VALUES_INDEX][index]}
72:   end