Gruff::PhotoBar

 
               # File lib/gruff/photo_bar.rb, line 26
def draw
  super
  return unless @has_data

  return # TODO Remove for further development

  init_photo_bar_graphics()
  
  #Draw#define_clip_path()
  #Draw#clip_path(pathname)
  #Draw#composite....with bar graph image OverCompositeOp
  #
  # See also
  #
  # Draw.pattern # define an image to tile as the filling of a draw object
  # 

  # Setup spacing.
  #
  # Columns sit side-by-side.
  spacing_factor = 0.9
  @bar_width = @norm_data[0][DATA_COLOR_INDEX].columns

  @norm_data.each_with_index do |data_row, row_index|

    data_row[DATA_VALUES_INDEX].each_with_index do |data_point, point_index|
      data_point = 0 if data_point.nil?
      # Use incremented x and scaled y
      left_x = @graph_left + (@bar_width * (row_index + point_index + ((@data.length - 1) * point_index)))
      left_y = @graph_top + (@graph_height - data_point * @graph_height) + 1
      right_x = left_x + @bar_width * spacing_factor
      right_y = @graph_top + @graph_height - 1
    
      bar_image_width = data_row[DATA_COLOR_INDEX].columns
      bar_image_height = right_y.to_f - left_y.to_f
    
      # Crop to scale for data
      bar_image = data_row[DATA_COLOR_INDEX].crop(0, 0, bar_image_width, bar_image_height)
      
      @d.gravity = NorthWestGravity
      @d = @d.composite(left_x, left_y, bar_image_width, bar_image_height, bar_image)
    
      # Calculate center based on bar_width and current row
      label_center = @graph_left + (@data.length * @bar_width * point_index) + (@data.length * @bar_width / 2.0)
      draw_label(label_center, point_index)
    end

  end

  @d.draw(@base_image)    
end
            

 
               # File lib/gruff/photo_bar.rb, line 88
def init_photo_bar_graphics    
  color_list = Array.new
  theme_dir = File.dirname(__FILE__) + '/../../assets/' + theme

  Dir.open(theme_dir).each do |file|
    next unless /\.png$/.match(file)
    color_list << Image.read("#{theme_dir}/#{file}").first
  end
  @colors = color_list
end