--- loncom/homework/imageresponse.pm	2006/05/18 22:02:03	1.77
+++ loncom/homework/imageresponse.pm	2007/04/18 01:06:22	1.82
@@ -2,7 +2,7 @@
 # The LearningOnline Network with CAPA
 # image click response style
 #
-# $Id: imageresponse.pm,v 1.77 2006/05/18 22:02:03 albertel Exp $
+# $Id: imageresponse.pm,v 1.82 2007/04/18 01:06:22 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -37,6 +37,9 @@ use Apache::londefdef();
 use Apache::Constants qw(:common :http);
 use Apache::lonlocal;
 use Apache::lonnet;
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+ 
 
 BEGIN {
     &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
@@ -129,15 +132,24 @@ sub prep_image {
     my ($image,$mode,$name)=@_;
     my $part=$Apache::inputtags::part;
     my $respid=$Apache::inputtags::response['-1'];
+    my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$respid.submission"});
+    &draw_image($mode,$image,$x,$y,$Apache::response::foilgroup{"$name.area"});
+}
+
+sub draw_image {
+    my ($mode,$image,$x,$y,$areas) = @_;
+
     my $id=&Apache::loncommon::get_cgi_id();
+
     my (%x,$i);
-    $x{"cgi.$id.BGIMG"}=&Apache::lonnet::escape($image);
-    my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$respid.submission"});
+    $x{"cgi.$id.BGIMG"}=&escape($image);
+
     #draws 2 xs on the image at the clicked location
     #one in white and then one in red on top of the one in white
+
     if (defined($x)    && $x =~/\S/ 
 	&& defined($y) && $y =~/\S/ 
-	&& !&Apache::response::show_answer()
+	&& ($mode eq 'submission' || !&Apache::response::show_answer())
 	&& $mode ne 'answeronly') {
 	my $length = 6;
 	my $width = 1;
@@ -167,8 +179,7 @@ sub prep_image {
     if ($mode eq 'answer' || $mode eq 'answeronly') {
 	my $width = 1;
 	my $extrawidth = 2;
-	my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
-	foreach my $area (@areas) {
+	foreach my $area (@{ $areas }) {
 	    if ($area=~/^rectangle:/) {
 		$x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
 		$i=$x{"cgi.$id.OBJCOUNT"}++;
@@ -200,6 +211,7 @@ sub displayfoils {
     my $result ='';
     my $name;
     my $temp=1;
+    my @images;
     foreach $name (@whichopt) {
 	$result.=$Apache::response::foilgroup{"$name.text"};
 	&Apache::lonxml::debug("Text is $result");
@@ -208,7 +220,8 @@ sub displayfoils {
 	&Apache::lonxml::debug("image is $image");
 	if ( $target eq 'web' && $image !~ /^http:/ ) {
 	    $image=&clean_up_image($image);
-	} 
+	}
+	push(@images,$image);
 	&Apache::lonxml::debug("image is $image");
 	if ( &Apache::response::show_answer() ) {
 	    if ($target eq 'tex') {
@@ -230,9 +243,24 @@ sub displayfoils {
 	}
 	$temp++;
     }
+    if ($target eq 'web') {
+	&Apache::response::setup_prior_tries_hash(\&format_prior_response,
+						  [\@images]);
+    }
     return $result;
 }
 
+sub format_prior_response {
+    my ($mode,$answer,$other_data) = @_;
+    my ($x,$y)=split(/:/,$answer);
+    my $images = $other_data->[0];
+
+    my $token = &draw_image('submission',$images->[0],$x,$y);
+
+    return "<img class=\"LC_prior_image\" src=\"/adm/randomlabel.png?token=$token\" />";
+    
+}
+
 sub display_answers {
     my ($target,$whichopt)=@_;
 
@@ -343,6 +371,7 @@ sub end_foilgroup {
 
 	if ($target eq 'web' || $target eq 'tex') {
 	    $result=&displayfoils($target,@whichopt);
+	    $Apache::lonxml::post_evaluate=0;
 	} elsif ($target eq 'grade') {
 	    if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
 	} elsif ( $target eq 'analyze') {