Return to randomlylabel.pm CVS log

Up to [LON-CAPA] / loncom / homework

Annotation of loncom/homework/randomlylabel.pm, revision 1.3

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: #
1.3     ! albertel    5: # $Id: randomlylabel.pm,v 1.2 2002/11/13 23:52:41 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();
1.3     ! albertel   37: use GD;
        !            38: 
        !            39: sub get_image {
        !            40:     my ($imgsrc,$set_trans)=@_;
        !            41:     my $image;
        !            42:     if ($imgsrc !~ /\.(png|jpg|jpeg)$/) {
        !            43: 	my $conv_image = Image::Magick->new;
        !            44: 	my $current_figure = $conv_image->Read('filename'=>$imgsrc);
        !            45: 	$conv_image->Set('magick'=>'png');
        !            46: 	my @blobs=$conv_image->ImageToBlob();
        !            47: 	undef $conv_image;
        !            48: 	$image = GD::Image->new($blobs[0]);
        !            49:     } else {
        !            50: 	$image = GD::Image->new($imgsrc);
        !            51:     }
        !            52:     if ($set_trans) {
        !            53: 	my $white=$image->colorExact(255,255,255);
        !            54: 	if ($white != -1) { $image->transparent($white); }
        !            55:     }
        !            56:     return $image;
        !            57: }
1.1       albertel   58: 
                     59: sub handler {
                     60:     my $r = shift;
                     61:     $r->content_type('image/png');
                     62:     my (undef,$token) = split(/=/,$ENV{'QUERY_STRING'});
                     63:     &Apache::loncommon::get_unprocessed_cgi(
                     64:                &Apache::lonnet::unescape($ENV{'imagerequest.'.$token}));
                     65:     &Apache::lonnet::delenv('imagerequest\.'.$token);
1.3     ! albertel   66:     my $image=&get_image($ENV{"form.BGIMG"},0);
1.1       albertel   67:     #binmode(STDOUT);
1.3     ! albertel   68:     my $black = $image->colorAllocate(0,0,0);
1.1       albertel   69:     for(my $i=0;$i<$ENV{"form.ICOUNT"};$i++) {
1.3     ! albertel   70: 	my $subimage=&get_image($ENV{"form.IMG$i"},1);
        !            71: 	$image->copy($subimage,$ENV{"form.X$i"},$ENV{"form.Y$i"},
        !            72: 		     0,0,$subimage->getBounds());
1.1       albertel   73:     }
1.3     ! albertel   74:     my $height=GD::Font->Giant->height;
1.1       albertel   75:     for(my $i=0;$i<$ENV{"form.COUNT"};$i++) {
1.3     ! albertel   76: 	$image->string(gdGiantFont,$ENV{"form.X$i"},$ENV{"form.Y$i"}-$height,
        !            77: 		       $ENV{"form.LB$i"},$black);
1.1       albertel   78:     }
1.3     ! albertel   79:     $r->print($image->png);
1.1       albertel   80:     return OK;
                     81: }
                     82: 
                     83: 1;