--- loncom/homework/randomlylabel.pm	2005/04/07 06:56:22	1.26
+++ loncom/homework/randomlylabel.pm	2017/05/23 03:07:34	1.32
@@ -1,8 +1,7 @@
-#!/usr/bin/perl
 # The LearningOnline Network with CAPA
 # randomlabel.png: composite together text and images into 1 image
 #
-# $Id: randomlylabel.pm,v 1.26 2005/04/07 06:56:22 albertel Exp $
+# $Id: randomlylabel.pm,v 1.32 2017/05/23 03:07:34 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -204,21 +203,23 @@ use Apache::Constants qw(:common);
 use Apache::loncommon();
 use GD;
 use GD::Polyline();
-use LWP::UserAgent();
 use Apache::lonnet;
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+use LONCAPA::LWPReq; 
 
 sub get_image {
     my ($imgsrc,$set_trans)=@_;
     my $image;
     if ($imgsrc !~ m|^(/home/)|) {
-	if ($imgsrc !~ /^http:/) {
-	    $imgsrc="http://".$ENV{'HTTP_HOST'}.$imgsrc;
+	if ($imgsrc !~ /^https?\:/) {
+	    $imgsrc=&Apache::lonnet::absolute_url($ENV{'HTTP_HOST'}).$imgsrc;
 	}
-	my $ua=new LWP::UserAgent;
 	my $request=new HTTP::Request('GET',"$imgsrc");
 	$request->header(Cookie => $ENV{'HTTP_COOKIE'});
 	my $file="/tmp/imagetmp".$$;
-	my $response=$ua->request($request,$file);
+        my $lonhost = $Apache::lonnet::perlvar{'lonHostID'};
+        my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,$file,'','','',1);
 	if ($response->is_success) {
 	    if ($response->content_type !~ m-/(png|jpg|jpeg)$-i) {
 		my $conv_image = Image::Magick->new;
@@ -265,24 +266,45 @@ 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');
     $r->send_http_header;
-    my (undef,$id) = split(/=/,$ENV{'QUERY_STRING'});
-    my $image;
-    my $prefix="cgi.$id.";
+
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
+
+    my $prefix;
     if ($ENV{'QUERY_STRING'}=~/OBJCOUNT\=/) {
-	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
 	$prefix='form.';
+    } else {
+	$prefix="cgi.$env{'form.token'}.";
     }
+
+    my $image;
     if (defined($env{$prefix."BGIMG"})) {
-	my $bgimg=&Apache::lonnet::unescape($env{$prefix."BGIMG"});
+	my $bgimg=&unescape($env{$prefix."BGIMG"});
 	#&Apache::lonnet::logthis("BGIMG is ".$bgimg);
 	$image=&get_image($bgimg,0);
 	if (! defined($image)) {
 	    &Apache::lonnet::logthis('Unable to create image object for -'.
-				     $id.'-'.$bgimg);
+				     $env{'form.token'}.'-'.$bgimg);
 	    return OK;
 	}
     } elsif (defined($env{$prefix."SIZE"})) {
@@ -299,7 +321,7 @@ sub handler {
 	    $image->transparent($bgcolor);
 	}
     } else {
-	&Apache::lonnet::logthis('Unable to create image object, no info');
+	&Apache::lonnet::logthis('Unable to create image object, no info '.$prefix);
 	return OK;
     }
     #binmode(STDOUT);
@@ -372,7 +394,7 @@ sub handler {
 	} elsif ($type eq 'IMAGE') {
 	    my ($x,$y,$file,$transparent,$srcX,$srcY,$destW,$destH,$srcW,
 		$srcH)=split(':',$env{$prefix."OBJ$i"});
-	    $file=&Apache::lonnet::unescape($file);
+	    $file=&unescape($file);
 	    if (!defined($transparent)) { $transparent=1; }
 	    my $subimage=&get_image($file,$transparent);
 	    if (!defined($subimage)) {
@@ -389,7 +411,7 @@ sub handler {
 	} elsif ($type eq 'LABEL') {
 	    my ($x,$y,$text,$font,$color,$direction)=
 		split(':',$env{$prefix."OBJ$i"});
-	    $text=&Apache::lonnet::unescape($text);
+	    $text=&unescape($text);
 	    my $imcolor=&get_color_from_hexstring($image,$color);
 	    my $type='normal';
 	    my ($height,$fontref);
@@ -423,6 +445,7 @@ 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;