Mercurial > hg > soundsoftware-site
diff .svn/pristine/7a/7a4b4f0b94cad3a2b4fae68431d483c842aa13c3.svn-base @ 1295:622f24f53b42 redmine-2.3
Update to Redmine SVN revision 11972 on 2.3-stable branch
author | Chris Cannam |
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date | Fri, 14 Jun 2013 09:02:21 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.svn/pristine/7a/7a4b4f0b94cad3a2b4fae68431d483c842aa13c3.svn-base Fri Jun 14 09:02:21 2013 +0100 @@ -0,0 +1,149 @@ +require 'rexml/document' +require 'SVG/Graph/BarBase' + +module SVG + module Graph + # === Create presentation quality SVG horitonzal bar graphs easily + # + # = Synopsis + # + # require 'SVG/Graph/BarHorizontal' + # + # fields = %w(Jan Feb Mar) + # data_sales_02 = [12, 45, 21] + # + # graph = SVG::Graph::BarHorizontal.new({ + # :height => 500, + # :width => 300, + # :fields => fields, + # }) + # + # graph.add_data({ + # :data => data_sales_02, + # :title => 'Sales 2002', + # }) + # + # print "Content-type: image/svg+xml\r\n\r\n" + # print graph.burn + # + # = Description + # + # This object aims to allow you to easily create high quality + # SVG horitonzal bar graphs. You can either use the default style sheet + # or supply your own. Either way there are many options which can + # be configured to give you control over how the graph is + # generated - with or without a key, data elements at each point, + # title, subtitle etc. + # + # = Examples + # + # * http://germane-software.com/repositories/public/SVG/test/test.rb + # + # = See also + # + # * SVG::Graph::Graph + # * SVG::Graph::Bar + # * SVG::Graph::Line + # * SVG::Graph::Pie + # * SVG::Graph::Plot + # * SVG::Graph::TimeSeries + # + # == Author + # + # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom> + # + # Copyright 2004 Sean E. Russell + # This software is available under the Ruby license[LICENSE.txt] + # + class BarHorizontal < BarBase + # In addition to the defaults set in BarBase::set_defaults, sets + # [rotate_y_labels] true + # [show_x_guidelines] true + # [show_y_guidelines] false + def set_defaults + super + init_with( + :rotate_y_labels => true, + :show_x_guidelines => true, + :show_y_guidelines => false + ) + self.right_align = self.right_font = 1 + end + + protected + + def get_x_labels + maxvalue = max_value + minvalue = min_value + range = maxvalue - minvalue + top_pad = range == 0 ? 10 : range / 20.0 + scale_range = (maxvalue + top_pad) - minvalue + + scale_division = scale_divisions || (scale_range / 10.0) + + if scale_integers + scale_division = scale_division < 1 ? 1 : scale_division.round + end + + rv = [] + maxvalue = maxvalue%scale_division == 0 ? + maxvalue : maxvalue + scale_division + minvalue.step( maxvalue, scale_division ) {|v| rv << v} + return rv + end + + def get_y_labels + @config[:fields] + end + + def y_label_offset( height ) + height / -2.0 + end + + def draw_data + minvalue = min_value + fieldheight = field_height + + unit_size = (@graph_width.to_f - font_size*2*right_font ) / + (get_x_labels.max - get_x_labels.min ) + bargap = bar_gap ? (fieldheight < 10 ? fieldheight / 2 : 10) : 0 + + bar_height = fieldheight - bargap + bar_height /= @data.length if stack == :side + y_mod = (bar_height / 2) + (font_size / 2) + + field_count = 1 + @config[:fields].each_index { |i| + dataset_count = 0 + for dataset in @data + value = dataset[:data][i] + + top = @graph_height - (fieldheight * field_count) + top += (bar_height * dataset_count) if stack == :side + # cases (assume 0 = +ve): + # value min length left + # +ve +ve value.abs - min minvalue.abs + # +ve -ve value.abs - 0 minvalue.abs + # -ve -ve value.abs - 0 minvalue.abs + value + length = (value.abs - (minvalue > 0 ? minvalue : 0)) * unit_size + left = (minvalue.abs + (value < 0 ? value : 0)) * unit_size + + @graph.add_element( "rect", { + "x" => left.to_s, + "y" => top.to_s, + "width" => length.to_s, + "height" => bar_height.to_s, + "class" => "fill#{dataset_count+1}" + }) + + make_datapoint_text( + left+length+5, top+y_mod, value, "text-anchor: start; " + ) + dataset_count += 1 + end + field_count += 1 + } + end + end + end +end