# File lib/gruff/side_bar.rb, line 8
 8:   def draw
 9:     @has_left_labels = true
10:     super
11: 
12:     return unless @has_data
13: 
14:     # Setup spacing.
15:     #
16:     @bar_spacing ||= 0.9
17: 
18:     @bars_width = @graph_height / @column_count.to_f
19:     @bar_width = @bars_width * @bar_spacing / @norm_data.size
20:     @d         = @d.stroke_opacity 0.0
21:     height     = Array.new(@column_count, 0)
22:     length     = Array.new(@column_count, @graph_left)
23:     padding    = (@bars_width * (1 - @bar_spacing)) / 2
24: 
25:     @norm_data.each_with_index do |data_row, row_index|
26:       @d = @d.fill data_row[DATA_COLOR_INDEX]
27: 
28:       data_row[DATA_VALUES_INDEX].each_with_index do |data_point, point_index|
29: 
30:         # Using the original calcs from the stacked bar chart
31:         # to get the difference between
32:         # part of the bart chart we wish to stack.
33:         temp1      = @graph_left + (@graph_width - data_point * @graph_width - height[point_index])
34:         temp2      = @graph_left + @graph_width - height[point_index]
35:         difference = temp2 - temp1
36: 
37:         left_x     = length[point_index] - 1
38:         left_y     = @graph_top + (@bars_width * point_index) + (@bar_width * row_index) + padding
39:         right_x    = left_x + difference
40:         right_y    = left_y + @bar_width
41: 
42:         height[point_index] += (data_point * @graph_width)
43: 
44:         @d           = @d.rectangle(left_x, left_y, right_x, right_y)
45: 
46:         # Calculate center based on bar_width and current row
47:         label_center = @graph_top + (@bars_width * point_index + @bars_width / 2)
48:         draw_label(label_center, point_index)
49:       end
50: 
51:     end
52: 
53:     @d.draw(@base_image)
54:   end

     # File lib/gruff/side_bar.rb, line 99
 99:   def draw_label(y_offset, index)
100:     if !@labels[index].nil? && @labels_seen[index].nil?
101:       @d.fill             = @font_color
102:       @d.font             = @font if @font
103:       @d.stroke           = 'transparent'
104:       @d.font_weight      = NormalWeight
105:       @d.pointsize        = scale_fontsize(@marker_font_size)
106:       @d.gravity          = EastGravity
107:       @d                  = @d.annotate_scaled(@base_image,
108:                               1, 1,
109:                               -@graph_left + LABEL_MARGIN * 2.0, y_offset,
110:                               @labels[index], @scale)
111:       @labels_seen[index] = 1
112:     end
113:   end

    # File lib/gruff/side_bar.rb, line 59
59:   def draw_line_markers
60: 
61:     return if @hide_line_markers
62: 
63:     @d = @d.stroke_antialias false
64: 
65:     # Draw horizontal line markers and annotate with numbers
66:     @d = @d.stroke(@marker_color)
67:     @d = @d.stroke_width 1
68:     number_of_lines = 5
69: 
70:     # TODO Round maximum marker value to a round number like 100, 0.1, 0.5, etc.
71:     increment = significant(@maximum_value.to_f / number_of_lines)
72:     (0..number_of_lines).each do |index|
73: 
74:       line_diff    = (@graph_right - @graph_left) / number_of_lines
75:       x            = @graph_right - (line_diff * index) - 1
76:       @d           = @d.line(x, @graph_bottom, x, @graph_top)
77:       diff         = index - number_of_lines
78:       marker_label = diff.abs * increment
79: 
80:       unless @hide_line_numbers
81:         @d.fill      = @font_color
82:         @d.font      = @font if @font
83:         @d.stroke    = 'transparent'
84:         @d.pointsize = scale_fontsize(@marker_font_size)
85:         @d.gravity   = CenterGravity
86:         # TODO Center text over line
87:         @d           = @d.annotate_scaled( @base_image,
88:                           0, 0, # Width of box to draw text in
89:                           x, @graph_bottom + (LABEL_MARGIN * 2.0), # Coordinates of text
90:                           marker_label.to_s, @scale)
91:       end # unless
92:       @d = @d.stroke_antialias true
93:     end
94:   end