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    1: # The LearningOnline Network with CAPA
    2: # image click response style
    3: #
    4: # $Id: imageresponse.pm,v 1.14 2001/12/04 15:17:56 albertel Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: #FIXME assumes multiple possbile submissions but only one is possible currently
   30: 
   31: package Apache::imageresponse;
   32: use strict;
   33: 
   34: sub BEGIN {
   35:   &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
   36: }
   37: 
   38: sub start_imageresponse {
   39:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   40:   my $result;
   41:   #when in a radiobutton response use these
   42:   &Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
   43:   push (@Apache::lonxml::namespace,'imageresponse');
   44:   my $id = &Apache::response::start_response($parstack,$safeeval);
   45:   if ($target eq 'meta') {
   46:     $result=&Apache::response::meta_package_write('imageresponse');
   47:   }
   48:   return $result;
   49: }
   50: 
   51: sub end_imageresponse {
   52:   &Apache::response::end_response;
   53:   pop @Apache::lonxml::namespace;
   54:   return '';
   55: }
   56: 
   57: %Apache::response::foilgroup={};
   58: sub start_foilgroup {
   59:   %Apache::response::foilgroup={};
   60:   $Apache::imageresponse::conceptgroup=0;
   61:   &Apache::response::setrandomnumber();
   62:   return '';
   63: }
   64: 
   65: sub getfoilcounts {
   66:   my ($parstack,$safeeval)=@_;
   67: 
   68:   my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
   69:   # +1 since instructors will count from 1
   70:   my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
   71:   return ($count,$max);
   72: }
   73: 
   74: sub whichfoils {
   75:   my ($max)=@_;
   76:   if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
   77:   my @names = @{ $Apache::response::foilgroup{'names'} };
   78:   my @whichopt =();
   79:   while ((($#whichopt+1) < $max) && ($#names > -1)) {
   80:     &Apache::lonxml::debug("Have $#whichopt max is $max");
   81:     my $aopt=int(rand($#names+1));
   82:     &Apache::lonxml::debug("From $#names elms, picking $aopt");
   83:     $aopt=splice(@names,$aopt,1);
   84:     &Apache::lonxml::debug("Picked $aopt");
   85:     push (@whichopt,$aopt);
   86:   }
   87:   return @whichopt;
   88: }
   89: 
   90: sub displayfoils {
   91:   my (@whichopt) = @_;
   92:   my $result ='';
   93:   my $name;
   94:   my $temp=1;
   95:   foreach $name (@whichopt) {
   96:     $result.=$Apache::response::foilgroup{"$name.text"}."<br />\n";
   97:     my $image=$Apache::response::foilgroup{"$name.image"};
   98:     if ($Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"} =~ /^correct/ ) {
   99:       $result.="<img src=\"$image\"/> <br />\n";
  100:     } else {
  101:       $result.="<input type=\"image\" name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\" src=\"$image\"/> <br />\n";
  102:     }
  103:     $temp++;
  104:   }
  105:   return $result;
  106: }
  107: 
  108: sub gradefoils {
  109:   my (@whichopt) = @_;
  110:   my $result='';
  111:   my $x;
  112:   my $y;
  113:   my $result;
  114:   my $id=$Apache::inputtags::response['-1'];
  115:   my $temp=1;
  116:   foreach my $name (@whichopt) {
  117:     $x=$ENV{"form.HWVAL_$id:$temp.x"};
  118:     $y=$ENV{"form.HWVAL_$id:$temp.y"};
  119:     &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
  120:     if (defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
  121:       my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
  122:       my $grade="INCORRECT";
  123:       foreach my $area (@areas) {
  124: 	&Apache::lonxml::debug("Area is $area for $name");
  125: 	$area =~ m/([a-z]*):/;
  126: 	&Apache::lonxml::debug("Area of type $1");
  127: 	if ($1 eq 'rectangle') {
  128: 	  $grade=&grade_rectangle($area,$x,$y);
  129: 	} else {
  130: 	  &Apache::lonxml::error("Unknown area style $area");
  131: 	}
  132: 	&Apache::lonxml::debug("Area said $grade");
  133: 	if ($grade eq 'APPROX_ANS') { last; }
  134:       }
  135:       &Apache::lonxml::debug("Foil was $grade");
  136:       if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
  137:       if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
  138:       &Apache::lonxml::debug("Question is $result");
  139:       $temp++;
  140:     }
  141:   }
  142:   $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}="$x:$y";
  143:   $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$result;
  144:   return '';
  145: }
  146: 
  147: sub end_foilgroup {
  148:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  149:   my $result='';
  150:   my @whichopt;
  151:   if ($target eq 'web' || $target eq 'grade') {
  152:     my ($count,$max) = &getfoilcounts($parstack,$safeeval);
  153:     if ($count>$max) { $count=$max }
  154:     &Apache::lonxml::debug("Count is $count from $max");
  155:     @whichopt = &whichfoils($max);
  156:   }
  157:   if ($target eq 'web') {
  158:     $result=&displayfoils(@whichopt);
  159:   }
  160:   if ($target eq 'grade') {
  161:     if ( defined $ENV{'form.submitted'}) {
  162:       &gradefoils(@whichopt);
  163:     }
  164:   }
  165:   return $result;
  166: }
  167: 
  168: sub start_conceptgroup {
  169:   $Apache::imageresponse::conceptgroup=1;
  170:   %Apache::response::conceptgroup={};
  171:   return '';
  172: }
  173: 
  174: sub end_conceptgroup {
  175:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  176:   $Apache::imageresponse::conceptgroup=0;  
  177:   if ($target eq 'web' || $target eq 'grade') {
  178:     if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
  179:       my @names = @{ $Apache::response::conceptgroup{'names'} };
  180:       my $pick=int(rand($#names+1));
  181:       my $name=$names[$pick];
  182:       if (defined(@{ $Apache::response::conceptgroup{"$name.area"} })) {
  183: 	push @{ $Apache::response::foilgroup{'names'} }, $name;
  184: 	$Apache::response::foilgroup{"$name.text"} = $Apache::response::conceptgroup{"$name.text"};
  185: 	$Apache::response::foilgroup{"$name.image"} = $Apache::response::conceptgroup{"$name.image"};
  186: 	push(@{ $Apache::response::foilgroup{"$name.area"} }, @{ $Apache::response::conceptgroup{"$name.area"} });
  187: 	my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
  188: 	$Apache::response::foilgroup{"$name.concept"} = $concept;
  189: 	&Apache::lonxml::debug("Selecting $name in $concept");
  190:       }
  191:     }
  192:   }
  193:   return '';
  194: }
  195: 
  196: $Apache::imageresponse::curname='';
  197: sub start_foil {
  198:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  199:   if ($target eq 'web' || $target eq 'grade') {
  200:     my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  201:     if ($name eq '') { $name=$Apache::lonxml::curdepth; }
  202:     if ( $Apache::imageresponse::conceptgroup ) {
  203:       push(@{ $Apache::response::conceptgroup{'names'} }, $name);
  204:     } else {
  205:       push(@{ $Apache::response::foilgroup{'names'} }, $name);
  206:     }
  207:     $Apache::imageresponse::curname=$name;
  208:   }
  209:   return '';
  210: }
  211: 
  212: sub end_foil {
  213:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  214:   return '';
  215: }
  216: 
  217: sub start_text {
  218:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  219:   if ($target eq 'web') { &Apache::lonxml::startredirection; }
  220:   return '';
  221: }
  222: 
  223: sub end_text {
  224:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  225:   if ($target eq 'web') {
  226:     my $name = $Apache::imageresponse::curname;
  227:     if ( $Apache::imageresponse::conceptgroup ) {
  228:       $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
  229:     } else {
  230:       $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
  231:     }
  232:   }
  233:   return '';
  234: }
  235: 
  236: sub start_image {
  237:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  238:   if ($target eq 'web') { &Apache::lonxml::startredirection; }
  239:   return '';
  240: }
  241: 
  242: sub end_image {
  243:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  244:   if ($target eq 'web') {
  245:     my $name = $Apache::imageresponse::curname;
  246:     my $image = &Apache::lonxml::endredirection;
  247:     &Apache::lonxml::debug("out is $image");
  248:     if ( $Apache::imageresponse::conceptgroup ) {
  249:       $Apache::response::conceptgroup{"$name.image"} = $image;
  250:     } else {
  251:       $Apache::response::foilgroup{"$name.image"} = $image;
  252:     }
  253:   }
  254:   return '';
  255: }
  256: 
  257: sub start_rectangle {
  258:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  259:   if ($target eq 'web' || $target eq 'grade') { &Apache::lonxml::startredirection; }
  260:   return '';
  261: }
  262: 
  263: sub grade_rectangle {
  264:   my ($spec,$x,$y) = @_;
  265:   &Apache::lonxml::debug("Spec is $spec");
  266:   $spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/;
  267:   my $x1=$1;
  268:   my $y1=$2;
  269:   my $x2=$3;
  270:   my $y2=$4;
  271:   &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
  272:   if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
  273:   if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
  274:   if ($x => $x1) { if ($x <= $x2) { if ($y => $y1) { if ($y <= $y2) { return 'APPROX_ANS'; } } } }
  275:   return 'INCORRECT';
  276: }
  277: 
  278: sub end_rectangle {
  279:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  280:   if ($target eq 'web' || $target eq 'grade') {
  281:     my $name = $Apache::imageresponse::curname;
  282:     my $area = &Apache::lonxml::endredirection;
  283:     &Apache::lonxml::debug("out is $area for $name");
  284:     if ( $Apache::imageresponse::conceptgroup ) {
  285:       push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
  286:     } else {
  287:       push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
  288:     }
  289:   }
  290:   return '';
  291: }
  292: 1;
  293: __END__
  294: