# The LearningOnline Network with CAPA
# image click response style
#
# $Id: imageresponse.pm,v 1.18 2002/05/03 20:44:46 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
#FIXME assumes multiple possbile submissions but only one is possible currently
package Apache::imageresponse;
use strict;
BEGIN {
&Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
}
sub start_imageresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
#when in a radiobutton response use these
&Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
push (@Apache::lonxml::namespace,'imageresponse');
my $id = &Apache::response::start_response($parstack,$safeeval);
if ($target eq 'meta') {
$result=&Apache::response::meta_package_write('imageresponse');
}
return $result;
}
sub end_imageresponse {
&Apache::response::end_response;
pop @Apache::lonxml::namespace;
&Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
return '';
}
%Apache::response::foilgroup={};
sub start_foilgroup {
%Apache::response::foilgroup={};
$Apache::imageresponse::conceptgroup=0;
&Apache::response::setrandomnumber();
return '';
}
sub getfoilcounts {
my ($parstack,$safeeval)=@_;
my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
# +1 since instructors will count from 1
my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
if (&Apache::response::showallfoils()) { $max=$count; }
return ($count,$max);
}
sub whichfoils {
my ($max)=@_;
if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
my @names = @{ $Apache::response::foilgroup{'names'} };
my @whichopt =();
while ((($#whichopt+1) < $max) && ($#names > -1)) {
&Apache::lonxml::debug("Have $#whichopt max is $max");
my $aopt;
if (&Apache::response::showallfoils()) {
$aopt=0;
} else {
$aopt=int(rand($#names+1));
}
&Apache::lonxml::debug("From $#names elms, picking $aopt");
$aopt=splice(@names,$aopt,1);
&Apache::lonxml::debug("Picked $aopt");
push (@whichopt,$aopt);
}
return @whichopt;
}
sub displayfoils {
my (@whichopt) = @_;
my $result ='';
my $name;
my $temp=1;
foreach $name (@whichopt) {
$result.=$Apache::response::foilgroup{"$name.text"}."<br />\n";
my $image=$Apache::response::foilgroup{"$name.image"};
if ($Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"} =~ /^correct/ ) {
$result.="<img src=\"$image\"/> <br />\n";
} else {
$result.="<input type=\"image\" name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\" src=\"$image\"/> <br />\n";
}
$temp++;
}
return $result;
}
sub gradefoils {
my (@whichopt) = @_;
my $result='';
my $x;
my $y;
my $result;
my $id=$Apache::inputtags::response['-1'];
my $temp=1;
foreach my $name (@whichopt) {
$x=$ENV{"form.HWVAL_$id:$temp.x"};
$y=$ENV{"form.HWVAL_$id:$temp.y"};
&Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
if (defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
my $grade="INCORRECT";
foreach my $area (@areas) {
&Apache::lonxml::debug("Area is $area for $name");
$area =~ m/([a-z]*):/;
&Apache::lonxml::debug("Area of type $1");
if ($1 eq 'rectangle') {
$grade=&grade_rectangle($area,$x,$y);
} else {
&Apache::lonxml::error("Unknown area style $area");
}
&Apache::lonxml::debug("Area said $grade");
if ($grade eq 'APPROX_ANS') { last; }
}
&Apache::lonxml::debug("Foil was $grade");
if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
&Apache::lonxml::debug("Question is $result");
$temp++;
}
}
$Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}="$x:$y";
$Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$result;
return '';
}
sub end_foilgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
my @whichopt;
if ($target eq 'web' || $target eq 'grade') {
my ($count,$max) = &getfoilcounts($parstack,$safeeval);
if ($count>$max) { $count=$max }
&Apache::lonxml::debug("Count is $count from $max");
@whichopt = &whichfoils($max);
}
if ($target eq 'web') {
$result=&displayfoils(@whichopt);
}
if ($target eq 'grade') {
if ( defined $ENV{'form.submitted'}) {
&gradefoils(@whichopt);
}
}
return $result;
}
sub start_conceptgroup {
$Apache::imageresponse::conceptgroup=1;
%Apache::response::conceptgroup={};
return '';
}
sub end_conceptgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
$Apache::imageresponse::conceptgroup=0;
if ($target eq 'web' || $target eq 'grade') {
if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
my @names = @{ $Apache::response::conceptgroup{'names'} };
my $pick=int(rand($#names+1));
my $name=$names[$pick];
if (defined(@{ $Apache::response::conceptgroup{"$name.area"} })) {
push @{ $Apache::response::foilgroup{'names'} }, $name;
$Apache::response::foilgroup{"$name.text"} = $Apache::response::conceptgroup{"$name.text"};
$Apache::response::foilgroup{"$name.image"} = $Apache::response::conceptgroup{"$name.image"};
push(@{ $Apache::response::foilgroup{"$name.area"} }, @{ $Apache::response::conceptgroup{"$name.area"} });
my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
$Apache::response::foilgroup{"$name.concept"} = $concept;
&Apache::lonxml::debug("Selecting $name in $concept");
}
}
}
return '';
}
$Apache::imageresponse::curname='';
sub start_foil {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web' || $target eq 'grade') {
my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
if ($name eq '') { $name=$Apache::lonxml::curdepth; }
if ( $Apache::imageresponse::conceptgroup
&& !&Apache::response::showallfoils()) {
push(@{ $Apache::response::conceptgroup{'names'} }, $name);
} else {
push(@{ $Apache::response::foilgroup{'names'} }, $name);
}
$Apache::imageresponse::curname=$name;
}
return '';
}
sub end_foil {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
return '';
}
sub start_text {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web') { &Apache::lonxml::startredirection; }
return '';
}
sub end_text {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web') {
my $name = $Apache::imageresponse::curname;
if ( $Apache::imageresponse::conceptgroup
&& !&Apache::response::showallfoils() ) {
$Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
} else {
$Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
}
}
return '';
}
sub start_image {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web') { &Apache::lonxml::startredirection; }
return '';
}
sub end_image {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web') {
my $name = $Apache::imageresponse::curname;
my $image = &Apache::lonxml::endredirection;
&Apache::lonxml::debug("out is $image");
if ( $Apache::imageresponse::conceptgroup
&& !&Apache::response::showallfoils()) {
$Apache::response::conceptgroup{"$name.image"} = $image;
} else {
$Apache::response::foilgroup{"$name.image"} = $image;
}
}
return '';
}
sub start_rectangle {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web' || $target eq 'grade') { &Apache::lonxml::startredirection; }
return '';
}
sub grade_rectangle {
my ($spec,$x,$y) = @_;
&Apache::lonxml::debug("Spec is $spec");
$spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/;
my $x1=$1;
my $y1=$2;
my $x2=$3;
my $y2=$4;
&Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
return 'APPROX_ANS';
}
return 'INCORRECT';
}
sub end_rectangle {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web' || $target eq 'grade') {
my $name = $Apache::imageresponse::curname;
my $area = &Apache::lonxml::endredirection;
&Apache::lonxml::debug("out is $area for $name");
if ( $Apache::imageresponse::conceptgroup
&& !&Apache::response::showallfoils()) {
push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
} else {
push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
}
}
return '';
}
1;
__END__
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