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Annotation of loncom/homework/randomlylabel.pm, revision 1.2

1.1       albertel    1: #!/usr/bin/perl
                      2: # The LearningOnline Network with CAPA
                      3: # randomlabel.png: composite together text and images into 1 image
                      4: #
1.2     ! albertel    5: # $Id: randomlylabel.pm,v 1.1 2002/11/08 14:37:42 albertel Exp $
1.1       albertel    6: #
                      7: # Copyright Michigan State University Board of Trustees
                      8: #
                      9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                     10: #
                     11: # LON-CAPA is free software; you can redistribute it and/or modify
                     12: # it under the terms of the GNU General Public License as published by
                     13: # the Free Software Foundation; either version 2 of the License, or
                     14: # (at your option) any later version.
                     15: #
                     16: # LON-CAPA is distributed in the hope that it will be useful,
                     17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     19: # GNU General Public License for more details.
                     20: #
                     21: # You should have received a copy of the GNU General Public License
                     22: # along with LON-CAPA; if not, write to the Free Software
                     23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     24: #
                     25: # /home/httpd/html/adm/gpl.txt
                     26: #
                     27: # http://www.lon-capa.org/
                     28: #
                     29: ###
                     30: 
                     31: package Apache::randomlylabel;
                     32: 
                     33: use strict;
                     34: use Image::Magick;
                     35: use Apache::Constants qw(:common);
                     36: use Apache::loncommon();
                     37: 
                     38: sub handler {
                     39:     my $r = shift;
                     40:     $r->content_type('image/png');
                     41:     my (undef,$token) = split(/=/,$ENV{'QUERY_STRING'});
                     42:     &Apache::loncommon::get_unprocessed_cgi(
                     43:                &Apache::lonnet::unescape($ENV{'imagerequest.'.$token}));
                     44:     &Apache::lonnet::delenv('imagerequest\.'.$token);
                     45:     my $image = Image::Magick->new;
                     46:     my $current_figure = $image->Read('filename'=>$ENV{"form.BGIMG"});
                     47:     #binmode(STDOUT);
                     48:     for(my $i=0;$i<$ENV{"form.ICOUNT"};$i++) {
                     49: 	my $subimage = Image::Magick->new;
                     50: 	$subimage->Read('filename' => $ENV{"form.IMG$i"});
                     51: 	$image->Composite('x' => $ENV{"form.X$i"},'y' => $ENV{"form.Y$i"},
1.2     ! albertel   52: 			 'compose'=> 'Over', 'image' => $subimage,
        !            53: 			 'gravity' => 'NorthWest');
1.1       albertel   54: 	undef($subimage);
                     55:     }
                     56:     for(my $i=0;$i<$ENV{"form.COUNT"};$i++) {
                     57: 	$image->Annotate('text' => $ENV{"form.LB$i"},'x' => $ENV{"form.X$i"},
                     58: 			 'y' => $ENV{"form.Y$i"}, 'font' => 'Times-Bold',
1.2     ! albertel   59: 			 'pointsize' => 18, 'antialias' => 'true',
        !            60: 			 'gravity' => 'NorthWest');
1.1       albertel   61:     }
                     62:     $image->Set('magick'=>'png');
                     63:     my @blobs=$image->ImageToBlob();
                     64:     $r->print($blobs[0]);
                     65:     return OK;
                     66: }
                     67: 
                     68: 1;