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@@ -86,12 +86,6 @@ module GraphvizHelper
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       return
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     end
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-    # ensure the requested graphviz command actually exists
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-    %x[#{cmd} -V 2>&1]
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-    unless 0 == $?.exitstatus
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-      raise NameError, "'#{cmd}' not found on the path"
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-    end
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-
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     # pull the name of the graph|digraph out of the DOT script
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     name = text.match(%r/\A\s*(?:strict\s+)?(?:di)?graph\s+([A-Za-z_][A-Za-z0-9_]*)\s+\{/o)[1]
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@@ -2,7 +2,6 @@
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 require Webby.libpath(*%w[webby stelan mktemp])
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 require 'fileutils'
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-require 'tempfile'
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 module Webby::Helpers
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 module TexImgHelper
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@@ -36,8 +35,6 @@ module TexImgHelper
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   #                    TeX color spec, or #aabbcc) [default is black]
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   #    :resolution   : the desired resolution in dpi (HxV)
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   #                    [default is 150x150]
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-  #    :antialias    : if false, disables anti-aliasing in the resulting image
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-  #                    [default is true]
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   #
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   #    the following options are passed as-is to the generated <img /> tag
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   #    :style    : CSS styles to apply to the <img />
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@@ -60,21 +57,15 @@ module TexImgHelper
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       return
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     end
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-    # create a temporary file for holding any error messages
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-    # from the graphviz program
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-    err = Tempfile.new('graphviz_err')
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-    err.close
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+    path = opts.getopt(:path)
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+    type = opts.getopt(:type, 'png')
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+    bg   = opts.getopt(:bg, 'white')
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+    fg   = opts.getopt(:fg, 'black')
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+    res  = opts.getopt(:resolution, '150x150')
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-    path  = opts.getopt(:path)
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-    type  = opts.getopt(:type, 'png')
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-    bg    = opts.getopt(:bg, 'white')
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-    fg    = opts.getopt(:fg, 'black')
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-    res   = opts.getopt(:resolution, '150x150')
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-    aa    = opts.getopt(:antialias, true)
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-
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-    # fix the color escaping
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-    fg = TexImgHelper.tex_color(fg)
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-    bg = TexImgHelper.tex_color(bg)
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+    # fix color escaping
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+    fg = fg =~ %r/^[a-zA-Z]+$/ ? fg : "\"#{fg}\""
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+    bg = bg =~ %r/^[a-zA-Z]+$/ ? bg : "\"#{bg}\""
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     # generate the image filename based on the path, graph name, and type
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     # of image to generate
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@@ -88,15 +79,21 @@ module TexImgHelper
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     FileUtils.mkpath(::File.join(out_dir, path)) unless path.nil?
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     tex = <<-TEX
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-      \\documentclass[12pt]{article}
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-      \\usepackage[usenames,dvipsnames]{color}
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-      \\usepackage[dvips]{graphicx}
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+      \\nonstopmode
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+      \\documentclass{article}
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+      \\usepackage[T1]{fontenc}
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+      \\usepackage{amsmath,amsfonts,amssymb,wasysym,latexsym,marvosym,txfonts}
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+      \\usepackage[pdftex]{color}
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       \\pagestyle{empty}
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-      \\pagecolor#{bg}
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       \\begin{document}
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-      {\\color#{fg}
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+      \\fontsize{12}{24}
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+      \\selectfont
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+      \\color{white}
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+      \\pagecolor{black}
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+      \\[
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       #{text}
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-      }\\end{document}
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+      \\]
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+      \\end{document}
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     TEX
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     tex.gsub!(%r/\n\s+/, "\n").strip!
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@@ -109,9 +106,14 @@ module TexImgHelper
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       File.open('out.tex', 'w') {|fd| fd.puts tex}
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       dev_null = test(?e, "/dev/null") ? "/dev/null" : "NUL:"
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-      %x[latex -interaction=batchmode out.tex &> #{dev_null}]
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-      %x[dvips -o out.eps -E out.dvi &> #{dev_null}]
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-      %x[convert +adjoin #{aa ? '-antialias' : '+antialias'} -density #{res} out.eps #{out_file} &> #{dev_null}]
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+      %x[pdflatex -interaction=batchmode out.tex &> #{dev_null}]
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+
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+      convert =  "\\( -density #{res} out.pdf -trim +repage \\) "
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+      convert << "\\( +clone -fuzz 100% -fill #{fg} -opaque black \\) "
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+      convert << "+swap -compose copy-opacity -composite "
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+      convert << "\\( +clone -fuzz 100% -fill #{bg} -opaque white +matte \\) "
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+      convert << "+swap -compose over -composite #{out_file}"
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+      %x[convert #{convert} &> #{dev_null}]
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     ensure
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       Dir.chdir(pwd)
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       FileUtils.rm_rf(tmpdir) if test(?e, tmpdir)
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@@ -133,42 +135,10 @@ module TexImgHelper
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     buffer[pos..-1] = out
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     return
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-  ensure
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   end
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-
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-  # call-seq:
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-  #    TexImgHelper.tex_color( string )    => string
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-  #
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-  # Taken the given color _string_ and convert it to a TeX color spec. The
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-  # input string can be either a RGB Hex value, a TeX color spec, or a color
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-  # name.
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-  #
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-  #    tex_color( '#666666' )         #=> [rgb]{0.4,0.4,0.4}
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-  #    tex_color( 'Tan' )             #=> {Tan}
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-  #    tex_color( '[rgb]{1,0,0}' )    #=> [rgb]{1,0,0}
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-  #
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-  # This is an example of an invalid Hex RGB color -- they must contain six
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-  # hexidecimal characters to be valid.
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-  #
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-  #    tex_color( '#333' )            #=> {#333}
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-  #
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-  def self.tex_color( color )
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-    case color
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-    when %r/^#([A-Fa-f0-9]{6})/o
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-      hex = $1
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-      rgb = []
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-      hex.scan(%r/../) {|n| rgb << Float(n.to_i(16))/255.0}
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-      "[rgb]{#{rgb.join(',')}}"
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-    when %r/^[\{\[]/o
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-      "{#{color}}"
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-    else
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-      color
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-    end
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-  end
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-
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 end  # module TexImgHelper
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-%x[latex --version 2>&1]
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+%x[pdflatex --version 2>&1]
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 if 0 == $?.exitstatus
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   %x[convert --version 2>&1]
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   if 0 == $?.exitstatus