<?php
  $data0 = "";
  if (isset($_GET['data0'])) {
   $data0 = "&data0=" . $_GET['data0'];
  }

  function retval($inv) {
    if (strpos($inv, "E-") !== false) return "0";
    return $inv;
  }
?>

<html>
  <head>
    <title>Pie Chart (Differences) - RJM Programming - http://www.rjmprogramming.com.au (Copyright &copy; 2013 rjmprogramming.com.au all rights reserved.)</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
    <script type="text/javascript">
<?php 
      $GETtitle = "My Daily Activities";
      $GETtask = "Task";
      $GETdesc = "Hours per Day";
      $GETdata = ",['Work',11],['Eat',2],['Commute',2],['Watch TV', 2],['Sleep',7]";
      if (isset($_GET['desc'])) {
       $GETtitle = $_GET['title'];
       $GETtask = $_GET['task'];
       $GETdesc = $_GET['desc'];
       $GETdata = $_GET['data'];
      }
      
       if (isset($_GET['data0'])) { 
      echo " google.load('visualization', '1.1', {packages:['corechart']}); " . "\n";
      echo ' google.setOnLoadCallback(drawChart); ' . "\n";
      echo ' function drawChart() { ' . "\n";
      echo ' var data = google.visualization.arrayToDataTable([ ' . "\n";
      echo " ['" . $GETtask . "','" . $GETdesc . "'] \n";
      echo str_replace("~,", "',", str_replace("[~", "['", str_replace(",]", ",0]", str_replace(",]", ",0]", str_replace(",]", ",0]", $GETdata)))));
      echo "        ]);\n";
      echo ' var data0 = google.visualization.arrayToDataTable([ ' . "\n";
      echo " ['" . $GETtask . "','" . $GETdesc . "'] \n";
      echo str_replace("~,", "',", str_replace("[~", "['", str_replace(",]", ",0]", str_replace(",]", ",0]", str_replace(",]", ",0]", $_GET['data0'])))));
      echo "        ]);\n";

      
      echo " var pieChartBefore = new google.visualization.PieChart(document.getElementById('piechart_before')); \n";
      echo " var pieChartAfter = new google.visualization.PieChart(document.getElementById('piechart_after')); \n";
      echo " var pieChartDiff = new google.visualization.PieChart(document.getElementById('piechart_diff')); \n";

      echo " var options = { pieSliceText: 'none' }; \n";

      echo " pieChartBefore.draw(data0, options); \n";
      echo " pieChartAfter.draw(data, options); \n";

      echo " var diffData = pieChartDiff.computeDiff(data0, data); \n";
      echo " pieChartDiff.draw(diffData, options);  \n } \n";
      
          
      echo " </script> \n";
      echo " </head> \n";
      echo " <body> \n";
      echo " <h1>" . $GETtitle . " Pie Chart</h1> \n";
 
      echo " <span id='piechart_before' style='width: 450px; height: 250px; display: inline-block'></span>\n";
      echo " <span id='piechart_after' style='width: 450px; height: 250px; display: inline-block'></span>\n";
      echo " <span id='piechart_diff' style='width: 450px; height: 250px; display: inline-block'></span>\n";
       } else {
      echo ' var data0 = "";' . "\n";
      echo ' google.load("visualization", "1", {packages:["corechart"]}); ' . "\n";
      echo ' google.setOnLoadCallback(drawChart); ' . "\n";
      echo ' function drawChart() { ' . "\n";
      echo ' var data = google.visualization.arrayToDataTable([ ' . "\n";
      echo " ['" . $GETtask . "','" . $GETdesc . "'] \n";
      echo str_replace("~,", "',", str_replace("[~", "['", str_replace(",]", ",0]", str_replace(",]", ",0]", str_replace(",]", ",0]", $GETdata)))));
      echo "        ]);\n";
      echo "        var options = { \n";
      echo "        title: '" . $GETtitle . "' \n";
      echo "        }; \n";

      echo " var chart = new google.visualization.PieChart(document.getElementById('chart_div')); \n";
      echo " chart.draw(data, options); \n } \n";
       
      echo " </script> \n";
      echo " </head> \n";
      echo " <body onload='setTimeout(later, 2 * 1000);'> \n";
      echo " <h1>" . $GETtitle . " Pie Chart</h1> \n";
      echo '<div id="chart_div" style="width: 900px; height: 500px; background-color: yellow;"></div>' . "\n";
       }
?>
    <a title="Another Pie Chart to show differences for" href="./pie_chart_diff.php">Another pie chart to show differences for?</a>
    <?php 
       if (!isset($_GET['desc']) || $data0 == "") {
         if (isset($_GET['data'])) $data0 = "&data0=" . $_GET['data'];
      
        echo '<' . 'script' . '>' . "\n " . " function later() { \n" . ' var datalineprefix = " "; ' . "\n";
        echo ' var datalinesuffix = ""; ' . "\n";
        echo ' var extra = ""; ' . "\n";
        echo ' var thisline = 1; ' . "\n";
        echo ' var totalleft = 100.0; ' . "\n";
        if (isset($_GET['data'])) {
          echo " var title = '" . $GETtitle . "'; " . "\n";
        } else {
          echo ' var title = prompt("Enter Pie Chart Title", "My Daily Activities"); ' . "\n";
        }
        echo ' if (title != null) { ' . "\n";
         if (isset($_GET['data'])) {
          echo " var task = '" . $GETtask . "'; " . "\n";
          echo " var desc = '" . $GETdesc . "'; " . "\n";
          } else {
        echo ' var task = prompt("Enter Activity Type", "' . $GETtask . '"); ' . "\n";
        echo ' var desc = prompt("Enter " + task + " Measure", "Percentage"); ' . "\n";
          }
        echo ' var datac = ""; ' . "\n";
        echo ' var sq = "' . "'" . '"; ' . "\n";
        echo ' datalineprefix = prompt("Enter " + task + " Type " + thisline, ""); ' . "\n";
        echo ' while (datalineprefix.length != 0 && (desc.indexOf("ercent") == (0 - 1) || desc.indexOf("  ercent ") != (0 - 1) || (desc.indexOf("ercent") != (0 - 1) && totalleft > 0))) { ' . "\n";
        echo ' if (datalinesuffix.length != 0) datalineprefix = prompt("Enter " + task + " Type " + thisline + " (for no more hit Cancel button)", ""); ' . "\n";
        echo ' if (datalineprefix == null) { ' . "\n";
        echo '     datalineprefix = ""; ' . "\n";
        echo '     totalleft = 0; ' . "\n";
        echo ' } else if (datalineprefix.length != 0) { ' . "\n";
        echo '     extra = "";  ' . "\n";
        echo '     if (desc.indexOf("ercent") != (0 - 1) && desc.indexOf("  ercent ") == (0 - 1)) extra = " (for " + totalleft + " enter nothing or hit Cancel button)";  ' . "\n";
        echo '     datalinesuffix = prompt("Enter " + desc.replace("  ercent ", "") + " " + thisline + extra, "0"); ' . "\n";
        echo '     if (datalinesuffix == null && desc.indexOf("ercent") != (0 - 1) && desc.indexOf("  ercent ") == (0 - 1)) datalinesuffix = totalleft; ' . "\n";
        echo '     if (datalinesuffix == null) datalinesuffix = "0"; ' . "\n";
        echo '     if (datalinesuffix.length == 0) { ' . "\n";
        echo '       datalinesuffix = eval(totalleft); ' . "\n";
        echo '       totalleft = 0; ' . "\n";
        echo '     } else if (eval(totalleft) == eval(datalinesuffix) && desc.indexOf("ercent") != (0 - 1) && desc.indexOf("  ercent ") == (0 - 1)) { ' . "\n";
        echo '       totalleft = 0; ' . "\n";
        echo '     } else if (eval(datalinesuffix) > eval(totalleft) && desc.indexOf("ercent") != (0 - 1) && desc.indexOf("  ercent ") == (0 - 1)) { ' . "\n";
        echo '       datalinesuffix = eval(totalleft); ' . "\n";
        echo '       totalleft = 0; ' . "\n";
        echo '     } else if (eval(datalinesuffix) > eval(totalleft) && desc.indexOf("ercent") == (0 - 1) && desc.indexOf("  ercent ") == (0 - 1)) { ' . "\n";
        echo '       desc = desc + "  ercent "; ' . "\n";
        echo '     } else { ' . "\n";
        echo '       totalleft = eval(totalleft) - eval(datalinesuffix); ' . "\n";
        echo '     } ' . "\n";
        echo '     datac = datac + ", [~" + datalineprefix + "~," + datalinesuffix + "] "; ' . "\n";
        echo '     thisline++; ' . "\n";
        echo '   } ' . "\n";
        echo ' } ' . "\n";
        echo ' window.location = "./pie_chart_diff.php?title=" + title + "&task=" + task + "&desc=" + desc.replace("  ercent ", "") + "' . $data0 . '&data=" + datac; ' . "\n";
        echo "} \n" . "} \n" . '</' . 'script' . '>' . "\n";
      } 
    ?>
  </body>
</html>
