--- loncom/homework/randomlylabel.pm	2007/09/25 22:56:48	1.29
+++ loncom/homework/randomlylabel.pm	2007/09/25 23:16:13	1.30
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # randomlabel.png: composite together text and images into 1 image
 #
-# $Id: randomlylabel.pm,v 1.29 2007/09/25 22:56:48 albertel Exp $
+# $Id: randomlylabel.pm,v 1.30 2007/09/25 23:16:13 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -267,6 +267,23 @@ sub get_color_from_hexstring {
     return $imcolor;
 }
 
+sub add_click {
+    my ($image) = @_;
+
+    my $length=6;
+    my $bgcolor=&get_color_from_hexstring($image,'FFFFFF');
+    my $fgcolor=&get_color_from_hexstring($image,'009999');
+
+    my ($x,$y) = split(':',$env{'form.clickdata'});
+
+    $image->setThickness(3);
+    $image->line($x-$length,$y,        $x+$length,$y,        $bgcolor);
+    $image->line($x,        $y-$length,$x,        $y+$length,$bgcolor);
+    $image->setThickness(1);
+    $image->line($x-$length,$y,        $x+$length,$y,        $fgcolor);
+    $image->line($x,        $y-$length,$x,        $y+$length,$fgcolor);
+}
+
 sub handler {
     my $r = shift;
     $r->content_type('image/png');
@@ -429,6 +446,7 @@ sub handler {
 	    &Apache::lonnet::logthis("randomlylabel unable to handle object of type $type");
 	}
     }
+    if (exists($env{'form.clickdata'})) { &add_click($image); }
     $image->setThickness(1);
     $r->print($image->png);
     return OK;