# 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:     spacing_factor = 0.9
17: 
18:     @bars_width = @graph_height / @column_count.to_f
19:     @bar_width = @bars_width * spacing_factor / @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: 
24:     @norm_data.each_with_index do |data_row, row_index|
25:       @d = @d.fill data_row[DATA_COLOR_INDEX]
26: 
27:       data_row[1].each_with_index do |data_point, point_index|
28: 
29:         # Using the original calcs from the stacked bar chart
30:         # to get the difference between
31:         # part of the bart chart we wish to stack.
32:         temp1      = @graph_left + (@graph_width - data_point * @graph_width - height[point_index])
33:         temp2      = @graph_left + @graph_width - height[point_index]
34:         difference = temp2 - temp1
35: 
36:         left_x     = length[point_index] - 1
37:         left_y     = @graph_top + (@bars_width * point_index) + (@bar_width * row_index)
38:         right_x    = left_x + difference
39:         right_y    = left_y + @bar_width
40: 
41:         height[point_index] += (data_point * @graph_width)
42: 
43:         @d           = @d.rectangle(left_x, left_y, right_x, right_y)
44: 
45:         # Calculate center based on bar_width and current row
46:         label_center = @graph_top + (@bars_width * point_index + @bars_width / 2)
47:         draw_label(label_center, point_index)
48:       end
49: 
50:     end
51: 
52:     @d.draw(@base_image)
53:   end

     # File lib/gruff/side_bar.rb, line 98
 98:   def draw_label(y_offset, index)
 99:     if !@labels[index].nil? && @labels_seen[index].nil?
100:       @d.fill             = @font_color
101:       @d.font             = @font if @font
102:       @d.stroke           = 'transparent'
103:       @d.font_weight      = NormalWeight
104:       @d.pointsize        = scale_fontsize(@marker_font_size)
105:       @d.gravity          = EastGravity
106:       @d                  = @d.annotate_scaled(@base_image,
107:                               1, 1,
108:                               -@graph_left + LABEL_MARGIN * 2.0, y_offset,
109:                               @labels[index], @scale)
110:       @labels_seen[index] = 1
111:     end
112:   end

    # File lib/gruff/side_bar.rb, line 58
58:   def draw_line_markers
59: 
60:     return if @hide_line_markers
61: 
62:     @d = @d.stroke_antialias false
63: 
64:     # Draw horizontal line markers and annotate with numbers
65:     @d = @d.stroke(@marker_color)
66:     @d = @d.stroke_width 1
67:     number_of_lines = 5
68: 
69:     # TODO Round maximum marker value to a round number like 100, 0.1, 0.5, etc.
70:     increment = significant(@maximum_value.to_f / number_of_lines)
71:     (0..number_of_lines).each do |index|
72: 
73:       line_diff    = (@graph_right - @graph_left) / number_of_lines
74:       x            = @graph_right - (line_diff * index) - 1
75:       @d           = @d.line(x, @graph_bottom, x, @graph_top)
76:       diff         = index - number_of_lines
77:       marker_label = diff.abs * increment
78: 
79:       unless @hide_line_numbers
80:         @d.fill      = @font_color
81:         @d.font      = @font if @font
82:         @d.stroke    = 'transparent'
83:         @d.pointsize = scale_fontsize(@marker_font_size)
84:         @d.gravity   = CenterGravity
85:         # TODO Center text over line
86:         @d           = @d.annotate_scaled( @base_image,
87:                           0, 0, # Width of box to draw text in
88:                           x, @graph_bottom + (LABEL_MARGIN * 2.0), # Coordinates of text
89:                           marker_label.to_s, @scale)
90:       end # unless
91:       @d = @d.stroke_antialias true
92:     end
93:   end