+require File.dirname(__FILE__) + '/base'
+
+# EXPERIMENTAL!
+#
+# Doesn't work yet.
+#
+class Gruff::PhotoBar < Gruff::Base
+
+# TODO
+#
+# define base and cap in yml
+# allow for image directory to be located elsewhere
+# more exact measurements for bar heights (go all the way to the bottom of the graph)
+# option to tile images instead of use a single image
+# drop base label a few px lower so photo bar graphs can have a base dropping over the lower marker line
+#
+
+ # The name of a pre-packaged photo-based theme.
+ attr_reader :theme
+
+# def initialize(target_width=800)
+# super
+# init_photo_bar_graphics()
+# end
+
+ 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[1].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
+
+
+ # Return the chosen theme or the default
+ def theme
+ @theme || 'plastik'
+ end
+
+protected
+
+ # Sets up colors with a list of images that will be used.
+ # Images should be 340px tall
+ 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
+
+end
+