--- loncom/interface/lonmeta.pm	2001/12/24 21:09:08	1.11
+++ loncom/interface/lonmeta.pm	2001/12/25 21:02:35	1.13
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Metadata display handler
 #
-# $Id: lonmeta.pm,v 1.11 2001/12/24 21:09:08 www Exp $
+# $Id: lonmeta.pm,v 1.13 2001/12/25 21:02:35 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -29,7 +29,7 @@
 #
 # 05/29/00,05/30,10/11 Gerd Kortemeyer)
 #
-# 10/19,10/21,10/23,11/27,08/09/01,12/22,12/24 Gerd Kortemeyer
+# 10/19,10/21,10/23,11/27,08/09/01,12/22,12/24,12/25 Gerd Kortemeyer
 
 package Apache::lonmeta;
 
@@ -96,6 +96,48 @@ sub dynamicmeta {
     return %returnhash;
 }
 
+# -------------------------------------------------------------- Pretty display
+
+sub evalgraph {
+    my $value=shift;
+    unless ($value) { return ''; }
+    my $val=int($value*10.+0.5)-10;
+    my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
+    if ($val>=20) {
+	$output.='<td width=20 bgcolor="#555555">&nbsp&nbsp;</td>';
+    } else {
+        $output.='<td width='.($val).' bgcolor="#555555">&nbsp;</td>'.
+                 '<td width='.(20-$val).' bgcolor="#FF3333">&nbsp;</td>';
+    }
+    $output.='<td bgcolor="#FFFF33">&nbsp;</td>';
+    if ($val>20) {
+	$output.='<td width='.($val-20).' bgcolor="#33FF33">&nbsp;</td>'.
+                 '<td width='.(40-$val).' bgcolor="#555555">&nbsp;</td>';
+    } else {
+       $output.='<td width=20 bgcolor="#555555">&nbsp&nbsp;</td>';
+    }
+    $output.='<td> ('.$value.') </td></tr></table>';
+    return $output;
+}
+
+sub diffgraph {
+    my $value=shift;
+    unless ($value) { return ''; }
+    my $val=int(40.0*$value+0.5);
+    my @colors=('#FF9933','#EEAA33','#DDBB33','#CCCC33',
+                '#BBDD33','#CCCC33','#DDBB33','#EEAA33');
+    my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
+    for (my $i=0;$i<8;$i++) {
+	if ($val>$i*5) {
+            $output.='<td width=5 bgcolor="'.$colors[$i].'">&nbsp;</td>';
+        } else {
+	    $output.='<td width=5 bgcolor="#555555">&nbsp;</td>';
+	}
+    }
+    $output.='<td> ('.$value.') </td></tr></table>';
+    return $output;
+}
+
 # ================================================================ Main Handler
 
 sub handler {
@@ -202,18 +244,23 @@ $dynmeta{$_}."&nbsp;</td></tr>\n");
    if ($uri=~/\.(problem|exam|quiz|assess|survey|form)\.meta$/) {
       $r->print(
 '<h4>Assessment Statistical Data</h4><table cellspacing=2 border=0>');
-      foreach ('stdno','avetries','difficulty') {
+      foreach ('stdno','avetries') {
           $r->print(
 '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
 $dynmeta{$_}."&nbsp;</td></tr>\n");
       }
+      foreach ('difficulty') {
+         $r->print(
+'<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
+&diffgraph($dynmeta{$_})."</td></tr>\n");
+      }
       $r->print('</table>');    
    }
    $r->print('<h4>Evaluation Data</h4><table cellspacing=2 border=0>');
    foreach ('clear','depth','helpful','correct','technical') {
        $r->print(
 '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
-$dynmeta{$_}."&nbsp;</td></tr>\n");
+&evalgraph($dynmeta{$_})."</td></tr>\n");
    }    
    $r->print('</table>');
    $disuri=~/^(\w+)\/(\w+)\//;