Revert "Added support for various forms of charts."

This reverts commit a508e50.

README.rdoc

@@ -138,25 +138,6 @@ definition, where tname is one of the following supported transitions:
 
 The transitions are provided by jQuery Cycle plugin. See http://www.malsup.com/jquery/cycle/browser.html to view the effects and http://www.malsup.com/jquery/cycle/adv2.html for how to add custom effects.
 
-Charts can be specified through the use of chart=cname on the !SLIDE definition,
-where cname is one of the following supported chart types:
-
-* pie
-* bar (both single and multi-series versions)
-* stacked
-* line
-* area
-
-Data for the chart is taken from a table on the slide itself.  Because you cannot
-arbitarily create 'th' elements using the markdown table syntax, the code looks for
-'em' elements within the table cells ('td' elements).  These 'em' elements are
-used for naming series and value points.  All other cells are assumed to be point
-values for each series.
-
-It sounds complicated but if you look at section 'four' of the example it should
-more sense!  Note, to get table markdown support you need to have installed the
-kramdown gem.
-
 You can manage the presentation with the following keys:
 
 * space, cursor right: next slide

example/showoff.json

@@ -4,7 +4,6 @@
   "sections": [
     {"section":"one"},
     {"section":"two"},
-    {"section":"three"},
-    {"section":"four"}
+    {"section":"three"}
   ]
 }

lib/showoff.rb

@@ -19,21 +19,10 @@
 end
 
 begin
-  require 'kramdown'
-  Markdown = Kramdown::Document
-
-  puts 'Using kramdown for markdown parsing'
+  require 'rdiscount'
 rescue LoadError
-  begin
-    require 'rdiscount'
-
-    puts 'Using rdiscount for markdown parsing'
-  rescue LoadError
-    require 'bluecloth'
-    Markdown = BlueCloth
-
-    puts 'Using bluecloth for markdown parsing'
-  end
+  require 'bluecloth'
+  Markdown = BlueCloth
 end
 require 'pp'
 
@@ -99,16 +88,12 @@ def process_markdown(name, content, static=false)
         # extract transition, defaulting to none
         transition = 'none'
         content_classes.delete_if { |x| x =~ /^transition=(.+)/ && transition = $1 }
-        # extract chart, defaulting to nil
-        chart = nil
-        content_classes.delete_if { |x| x =~ /^chart=(.+)/ && chart = $1 }
         # extract id, defaulting to none
         id = nil
         content_classes.delete_if { |x| x =~ /^#([\w-]+)/ && id = $1 }
         puts "id: #{id}" if id
         puts "classes: #{content_classes.inspect}"
         puts "transition: #{transition}"
-        puts "chart: #{chart}"
         # create html
         md += "<div"
         md += " id=\"#{id}\"" if id
@@ -122,7 +107,6 @@ def process_markdown(name, content, static=false)
         sl = Markdown.new(slide).to_html
         sl = update_image_paths(name, sl, static)
         md += sl
-        md += "<div class=\"chart\" data-chart=\"#{chart}\"></div>" unless chart.nil?
         md += "</div>\n"
         md += "</div>\n"
         final += update_commandline_code(md)

public/css/showoff.css

@@ -12,11 +12,6 @@
       overflow:hidden;
   }
 
-  .slide .chart {
-    height: 580px;
-    margin: 0 auto;
-  }
-
   #footer {
       background: #eee;
       padding: 2px;