[LON-CAPA-cvs] cvs: loncom /homework randomlylabel.pm

[albertel]

albertel		Wed Feb 11 16:51:15 2004 EDT

  Modified files:              
    /loncom/homework	randomlylabel.pm 
  Log:
  - start of support for LWP gotten images 
  
  
Index: loncom/homework/randomlylabel.pm
diff -u loncom/homework/randomlylabel.pm:1.14 loncom/homework/randomlylabel.pm:1.15
--- loncom/homework/randomlylabel.pm:1.14	Mon Jan 12 14:53:54 2004
+++ loncom/homework/randomlylabel.pm	Wed Feb 11 16:51:15 2004
@@ -2,7 +2,7 @@
 # The LearningOnline Network with CAPA
 # randomlabel.png: composite together text and images into 1 image
 #
-# $Id: randomlylabel.pm,v 1.14 2004/01/12 19:53:54 albertel Exp $
+# $Id: randomlylabel.pm,v 1.15 2004/02/11 21:51:15 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,11 +36,41 @@
 use Apache::loncommon();
 use GD();
 use GD::Polyline();
+use LWP::UserAgent();
 
 sub get_image {
     my ($imgsrc,$set_trans)=@_;
     my $image;
-    if ($imgsrc !~ /\.(png|jpg|jpeg)$/i) {
+    &Apache::lonnet::logthis("imagesrc1 is $imgsrc");
+    if ($imgsrc !~ m|^(/home/)|) {
+	&Apache::lonnet::logthis("imagesrc2 is $imgsrc");
+	if ($imgsrc !~ /^http:/) {
+	    $imgsrc="http://".$ENV{'HTTP_HOST'}.$imgsrc;
+	}
+	&Apache::lonnet::logthis("imagesrc3 is $imgsrc");
+	&Apache::lonnet::logthis("LWP fetching image $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);
+	&Apache::lonnet::logthis("contetn is ".$response->content_type);
+	&Apache::lonnet::logthis($response->is_success);
+	&Apache::lonnet::logthis($response->status_line);
+	if ($response->is_success) {
+	    if ($response->content_type !~ m-/(png|jpg|jpeg)$-i) {
+		my $conv_image = Image::Magick->new;
+		my $current_figure = $conv_image->Read('filename'=>$file);
+		$conv_image->Set('magick'=>'png');
+		my @blobs=$conv_image->ImageToBlob();
+		undef $conv_image;
+		$image = GD::Image->new($blobs[0]);
+	    } else {
+		GD::Image->trueColor(1);
+		$image = GD::Image->new($file);
+	    }
+	}
+    } elsif ($imgsrc !~ /\.(png|jpg|jpeg)$/i) {
 	my $conv_image = Image::Magick->new;
 	my $current_figure = $conv_image->Read('filename'=>$imgsrc);
 	$conv_image->Set('magick'=>'png');
@@ -61,7 +91,9 @@
 sub handler {
     my $r = shift;
     $r->content_type('image/png');
+    $r->send_http_header;
     my (undef,$id) = split(/=/,$ENV{'QUERY_STRING'});
+    &Apache::lonnet::logthis("BGIMG is ".$ENV{"cgi.$id.BGIMG"});
     my $image=&get_image(&Apache::lonnet::unescape($ENV{"cgi.$id.BGIMG"}),0);
     if (! defined($image)) {
         &Apache::lonnet::logthis('Unable to create image object for -'.$id.'-'.