File:
[LON-CAPA] /
loncom /
homework /
imageresponse.pm
Revision
1.105:
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Tue Apr 30 03:03:34 2013 UTC (11 years, 3 months ago) by
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CVS tags:
version_2_11_X,
version_2_11_5_msu,
version_2_11_5,
version_2_11_4_uiuc,
version_2_11_4_msu,
version_2_11_4,
version_2_11_3_uiuc,
version_2_11_3_msu,
version_2_11_3,
version_2_11_2_uiuc,
version_2_11_2_msu,
version_2_11_2_educog,
version_2_11_2,
version_2_11_1,
version_2_11_0_RC3,
version_2_11_0_RC2,
version_2_11_0_RC1,
version_2_11_0,
HEAD
- Can view own submissions in anonymous surveys.
#
# The LearningOnline Network with CAPA
# image click response style
#
# $Id: imageresponse.pm,v 1.105 2013/04/30 03:03:34 raeburn 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 LATER assumes multiple possible submissions but only one is possible
#currently
=head1 NAME
Apache::imageresponse
=head1 SYNOPSIS
Coordinates the response to clicking an image.
This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.
=head1 SUBROUTINES
=over
=item start_imageresponse()
=item end_imageresponse()
=item start_foilgroup()
=item getfoilcounts()
=item whichfoils()
=item prep_image()
=item draw_image()
=item displayfoils()
=item format_prior_response()
=item display_answers()
=item clean_up_image()
=item gradefoils()
=item stringify_submission()
=item get_submission()
=item end_foilgroup()
=item start_conceptgroup()
=item end_conceptgroup()
=item insert_foil()
=item start_foil()
=item end_foil()
=item start_text()
=item end_text()
=item start_image()
=item end_image()
=item start_rectangle()
=item grade_rectangle()
=item end_rectangle()
=item start_polygon()
=item grade_polygon()
=item end_polygon()
=back
=cut
package Apache::imageresponse;
use strict;
use Image::Magick();
use Apache::randomlylabel();
use Apache::londefdef();
use Apache::Constants qw(:common :http);
use Apache::lonlocal;
use Apache::lonnet;
use lib '/home/httpd/lib/perl/';
use LONCAPA;
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',
'polygon','conceptgroup'));
push (@Apache::lonxml::namespace,'imageresponse');
my $id = &Apache::response::start_response($parstack,$safeeval);
undef(%Apache::response::foilnames);
if ($target eq 'meta') {
$result=&Apache::response::meta_package_write('imageresponse');
} elsif ($target eq 'analyze') {
my $part_id="$Apache::inputtags::part.$id";
$Apache::lonhomework::analyze{"$part_id.type"} = 'imageresponse';
push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} },
1);
} elsif ( $target eq 'edit' ) {
$result .= &Apache::edit::tag_start($target,$token).
&Apache::edit::text_arg('Max Number Of Shown Foils:',
'max',$token,'4').
&Apache::edit::end_row().
&Apache::edit::start_spanning_row();
} elsif ( $target eq 'modified' ) {
my $constructtag=
&Apache::edit::get_new_args($token,$parstack,$safeeval,'max');
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
}
return $result;
}
sub end_imageresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $part_id = $Apache::inputtags::part;
my $response_id = $Apache::inputtags::response[-1];
pop(@Apache::lonxml::namespace);
&Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
my $result;
if ($target eq 'edit') {
$result=&Apache::edit::end_table();
} elsif ($target eq 'tex'
&& $Apache::lonhomework::type eq 'exam') {
$result=&Apache::inputtags::exam_score_line($target);
}
undef(%Apache::response::foilnames);
if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
$target eq 'tex' || $target eq 'analyze') {
my $repetition = &Apache::response::repetition();
&Apache::lonxml::increment_counter($repetition,
"$part_id.$response_id");
if ($target eq 'analyze') {
&Apache::lonhomework::set_bubble_lines();
}
}
&Apache::response::end_response();
return $result;
}
%Apache::response::foilgroup=();
sub start_foilgroup {
my ($target) = @_;
%Apache::response::foilgroup=();
$Apache::imageresponse::conceptgroup=0;
&Apache::response::pushrandomnumber(undef,$target);
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 ($max)=@_;
my @names;
if (ref($Apache::response::foilgroup{'names'}) eq 'ARRAY') {
@names = @{ $Apache::response::foilgroup{'names'} };
}
return if (!@names);
my @whichopt;
while ((($#whichopt+1) < $max) && ($#names > -1)) {
&Apache::lonxml::debug("Have $#whichopt max is $max");
my $aopt;
if (&Apache::response::showallfoils()) {
$aopt=0;
} else {
$aopt=int(&Math::Random::random_uniform() * ($#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 prep_image {
my ($image,$mode,$name)=@_;
my ($x,$y)= &get_submission($name);
&Apache::lonxml::debug("for $name drawing click at $x and $y");
&draw_image($mode,$image,$x,$y,$Apache::response::foilgroup{"$name.area"});
}
sub draw_image {
my ($mode,$image,$x,$y,$areas) = @_;
my $id=&Apache::loncommon::get_cgi_id();
my (%x,$i);
$x{"cgi.$id.BGIMG"}=&escape($image);
#draws 2 xs on the image at the clicked location
#one in white and then one in red on top of the one in white
if (defined($x) && $x =~/\S/
&& defined($y) && $y =~/\S/
&& ($mode eq 'submission' || !&Apache::response::show_answer())
&& $mode ne 'answeronly') {
my $length = 6;
my $width = 1;
my $extrawidth = 2;
my $xmin=($x-$length);
my $xmax=($x+$length);
my $ymin=($y-$length);
my $ymax=($y+$length);
$x{"cgi.$id.OBJTYPE"}.='LINE:';
$i=$x{"cgi.$id.OBJCOUNT"}++;
$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
"FFFFFF",($width+$extrawidth)));
$x{"cgi.$id.OBJTYPE"}.='LINE:';
$i=$x{"cgi.$id.OBJCOUNT"}++;
$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
"FFFFFF",($width+$extrawidth)));
$x{"cgi.$id.OBJTYPE"}.='LINE:';
$i=$x{"cgi.$id.OBJCOUNT"}++;
$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
"FF0000",($width)));
$x{"cgi.$id.OBJTYPE"}.='LINE:';
$i=$x{"cgi.$id.OBJCOUNT"}++;
$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
"FF0000",($width)));
}
if ($mode eq 'answer' || $mode eq 'answeronly') {
my $width = 1;
my $extrawidth = 2;
foreach my $area (@{ $areas }) {
if ($area=~/^rectangle:/) {
$x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
$i=$x{"cgi.$id.OBJCOUNT"}++;
my ($x1,$y1,$x2,$y2)=
($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
$x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
($width+$extrawidth)));
$x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
$i=$x{"cgi.$id.OBJCOUNT"}++;
$x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
} elsif ($area=~/^polygon:(.*)/) {
$x{"cgi.$id.OBJTYPE"}.='POLYGON:';
$i=$x{"cgi.$id.OBJCOUNT"}++;
$x{"cgi.$id.OBJ$i"}=join(':',("FFFFFF",($width+$extrawidth)));
$x{"cgi.$id.OBJEXTRA$i"}=$1;
$x{"cgi.$id.OBJTYPE"}.='POLYGON:';
$i=$x{"cgi.$id.OBJCOUNT"}++;
$x{"cgi.$id.OBJ$i"}=join(':',("00FF00",$width));
$x{"cgi.$id.OBJEXTRA$i"}=$1;
}
}
}
&Apache::lonnet::appenv(\%x);
return $id;
}
sub displayfoils {
my ($target,@whichopt) = @_;
my $result ='';
my $temp=1;
my @images;
foreach my $name (@whichopt) {
$result.=$Apache::response::foilgroup{"$name.text"};
&Apache::lonxml::debug("Text is $result");
if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
my $image=$Apache::response::foilgroup{"$name.image"};
&Apache::lonxml::debug("image is $image");
if ( ($target eq 'web' || $target eq 'answer')
&& $image !~ /^https?\:/ ) {
$image=&clean_up_image($image);
}
push(@images,$image);
&Apache::lonxml::debug("image is $image");
if ( &Apache::response::show_answer() ) {
if ($target eq 'tex') {
$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
} else {
my $token=&prep_image($image,'answer',$name);
$result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
}
} else {
if ($target eq 'tex') {
$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
} else {
my $respid=$Apache::inputtags::response['-1'];
my $token=&prep_image($image,'submission',$name);
my $input_id = "HWVAL_$respid:$temp";
my $id = $env{'form.request.prefix'}.$input_id;
$result.='<img onclick="image_response_click(\''.$id.'\',event);"
src="/adm/randomlabel.png?token='.$token.'"
id="'.$id.'_imageresponse"
/>'.
'<br />'.
'<input type="hidden" name="'.$input_id.'_token" value="'.$token.'" />'.
'<input type="hidden" name="'.$input_id.'" value="'.
join(':',&get_submission($name)).'" />';
}
}
$temp++;
}
if ($target eq 'web') {
&get_prior_options(\@images,\@whichopt);
}
return $result;
}
sub get_prior_options {
my ($currimages,$curropt) = @_;
return unless((ref($curropt) eq 'ARRAY') &&
(ref($currimages) eq 'ARRAY'));
my $part = $Apache::inputtags::part;
my $respid = $Apache::inputtags::response[-1];
foreach my $i (1..$Apache::lonhomework::history{'version'}) {
my $partprefix = "$i:resource.$part";
my $sub_key = "$partprefix.$respid.submission";
next if (!exists($Apache::lonhomework::history{$sub_key}));
my $type_key = "$partprefix.type";
my @whichopt = ();
my @images = ();
if ($Apache::lonhomework::history{$type_key} eq 'randomizetry') {
my $order_key = "$partprefix.$respid.foilorder";
@whichopt = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
if (@whichopt > 0) {
foreach my $name (@whichopt) {
my $image=$Apache::response::foilgroup{"$name.image"};
if ($image !~ /^https?\:/ ) {
$image=&clean_up_image($image);
}
push(@images,$image);
}
}
} else {
@whichopt = @{$curropt};
@images = @{$currimages};
}
my $submission;
if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
(($env{'form.grade_username'} eq $env{'user.name'}) &&
($env{'form.grade_domain'} eq $env{'user.domain'}))) {
$submission = $Apache::lonhomework::history{$sub_key};
} else {
unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
$submission = $Apache::lonhomework::history{$sub_key};
}
}
my $output = &format_prior_response('grade',$submission,
[\@images,\@whichopt]);
if (defined($output)) {
$Apache::inputtags::submission_display{$sub_key} = $output;
}
}
}
sub format_prior_response {
my ($mode,$answer,$other_data) = @_;
my $result;
# make a copy of the data in the refs
my @images = @{ $other_data->[0] };
my @foils = @{ $other_data->[1] };
foreach my $name (@foils) {
my $image = pop(@images);
my ($x,$y) = &get_submission($name,$answer);
my $token = &draw_image('submission',$image,$x,$y);
$result .=
'<img class="LC_prior_image"
src="/adm/randomlabel.png?token='.$token.'" /><br />';
}
return $result;
}
sub display_answers {
my ($target,$whichopt)=@_;
my $result=&Apache::response::answer_header('imageresponse');
foreach my $name (@$whichopt) {
my $image=$Apache::response::foilgroup{"$name.image"};
&Apache::lonxml::debug("image is $image");
if ( ($target eq 'web' || $target eq 'answer')
&& $image !~ /^https?\:/ ) {
$image = &clean_up_image($image);
}
my $token=&prep_image($image,'answeronly',$name);
$result.=&Apache::response::answer_part('imageresponse',"<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n");
}
$result.=&Apache::response::answer_footer('imageresponse');
return $result;
}
sub clean_up_image {
my ($image)=@_;
if ($image =~ /\s*<img\s*/) {
($image) = ($image =~ /src\s*=\s*[\"\']([^\"\']+)[\"\']/i);
if ($image !~ /^https?\:/) {
$image=&Apache::lonnet::hreflocation('',$image);
}
if (!$image) {
$image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
}
} else {
$image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image);
&Apache::lonxml::debug("repcopying: $image");
if (&Apache::lonnet::repcopy($image) ne 'ok') {
$image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
}
}
return $image;
}
sub gradefoils {
my (@whichopt) = @_;
my $partid = $Apache::inputtags::part;
my $id = $Apache::inputtags::response['-1'];
if ($Apache::lonhomework::type eq 'exam') {
&Apache::response::scored_response($partid,$id);
return;
}
my @results;
my $temp=1;
my %response;
foreach my $name (@whichopt) {
my ($x,$y) = split(':',$env{"form.HWVAL_$id:$temp"});
$response{$name} = $env{"form.HWVAL_$id:$temp"};
&Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
my @areas;
if (ref($Apache::response::foilgroup{"$name.area"}) eq 'ARRAY') {
@areas = @{ $Apache::response::foilgroup{"$name.area"} };
}
if (defined($x) && defined($y) && @areas) {
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);
} elsif ($1 eq 'polygon') {
$grade=&grade_polygon($area,$x,$y);
} else {
&Apache::lonxml::error(&mt('Unknown area style [_1]',$area));
}
&Apache::lonxml::debug("Area said $grade");
if ($grade eq 'APPROX_ANS') { last; }
}
&Apache::lonxml::debug("Foil was $grade");
push(@results, $grade)
} else {
push(@results, 'MISSING_ANSWER')
}
$temp++;
}
if ($Apache::lonhomework::type eq 'randomizetry') {
$Apache::lonhomework::results{"resource.$partid.$id.foilorder"} = &Apache::lonnet::array2str(@whichopt);
}
my ($result) = &Apache::inputtags::finalizeawards(\@results,[]);
&Apache::lonxml::debug("Question is $result");
my $part=$Apache::inputtags::part;
my %previous=
&Apache::response::check_for_previous(&stringify_submission(\%response),
$part,$id);
if ($result) {
if ($Apache::lonhomework::type eq 'survey') {
$result='SUBMITTED';
} elsif ($Apache::lonhomework::type eq 'surveycred') {
$result='SUBMITTED_CREDIT';
} elsif ($Apache::lonhomework::type eq 'anonsurvey') {
$result='ANONYMOUS';
} elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
$result='ANONYMOUS_CREDIT';
}
}
&Apache::response::handle_previous(\%previous,$result);
$Apache::lonhomework::results{"resource.$part.$id.submission"}=
&stringify_submission(\%response);
$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$result;
return;
}
sub stringify_submission {
my ($response) = @_;
return &Apache::lonnet::hash2str(%{ $response });
}
sub get_submission {
my ($name,$string) = @_;
if (!defined($string)) {
my $part=$Apache::inputtags::part;
my $respid=$Apache::inputtags::response['-1'];
my $newvariation;
if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
($Apache::lonhomework::type eq 'randomizetry')) &&
($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
if ($env{'form.'.$part.'.rndseed'} ne
$Apache::lonhomework::history{"resource.$part.rndseed"}) {
$newvariation = 1;
}
}
unless ($newvariation) {
if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
(($env{'form.grade_username'} eq $env{'user.name'}) &&
($env{'form.grade_domain'} eq $env{'user.domain'}))) {
$string =
$Apache::lonhomework::history{"resource.$part.$respid.submission"};
} else {
unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
$string =
$Apache::lonhomework::history{"resource.$part.$respid.submission"};
}
}
}
}
if ($string !~ /=/) {
return split(':',$string);
} else {
my %response = &Apache::lonnet::str2hash($string);
return split(':',$response{$name});
}
}
sub end_foilgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
my (@images,@whichopt);
if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
$target eq 'analyze' || $target eq 'answer') {
my ($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' || $target eq 'tex') {
$result=&displayfoils($target,@whichopt);
if ($Apache::lonhomework::type eq 'randomizetry') {
if ($target eq 'web') {
&get_prior_options(\@images,\@whichopt);
}
}
$Apache::lonxml::post_evaluate=0;
} elsif ($target eq 'grade') {
if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
} elsif ( $target eq 'analyze') {
&Apache::response::analyze_store_foilgroup(\@whichopt,
['text','image','area']);
} elsif ($target eq 'answer'
&& $env{'form.answer_output_mode'} ne 'tex') {
$result=&display_answers($target,\@whichopt);
}
} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();
}
&Apache::response::poprandomnumber();
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;
my $result;
if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
$target eq 'analyze') {
&Apache::response::pick_foil_for_concept($target,
['area','text','image'],
\%Apache::hint::image,
$parstack,$safeeval);
} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();
}
return $result;
}
sub insert_foil {
return '
<foil>
<image></image>
<text></text>
<rectangle></rectangle>
</foil>
';
}
$Apache::imageresponse::curname='';
sub start_foil {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
$target eq 'analyze' || $target eq 'answer') {
my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
if ($name eq "") {
&Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
$name=$Apache::lonxml::curdepth;
}
if (defined($Apache::response::foilnames{$name})) {
&Apache::lonxml::error(&mt("Foil name [_1] appears more than once. Foil names need to be unique."
,'<b><tt>'.$name.'</tt></b>'));
}
$Apache::response::foilnames{$name}++;
if ( $Apache::imageresponse::conceptgroup
&& !&Apache::response::showallfoils()
) {
push(@{ $Apache::response::conceptgroup{'names'} }, $name);
} else {
push(@{ $Apache::response::foilgroup{'names'} }, $name);
}
$Apache::imageresponse::curname=$name;
} elsif ($target eq 'edit') {
$result = &Apache::edit::tag_start($target,$token);
$result .= &Apache::edit::text_arg('Name:','name',$token);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name');
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
}
return $result;;
}
sub end_foil {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'edit') {
$result=&Apache::edit::end_table();
}
return $result;
}
sub start_text {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
|| $target eq 'answer') {
&Apache::lonxml::startredirection;
} elsif ($target eq 'edit') {
my $descr=&Apache::lonxml::get_all_text('/text',$parser,$style);
$result=&Apache::edit::tag_start($target,$token,'Task Description').
&Apache::edit::editfield($token->[1],$descr,'Text',60,2).
&Apache::edit::end_row();
} elsif ($target eq "modified") {
$result=$token->[4].&Apache::edit::modifiedfield('/text',$parser);
}
return $result;
}
sub end_text {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
|| $target eq 'answer') {
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;
}
} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();
}
return $result;
}
sub start_image {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
|| $target eq 'answer') {
&Apache::lonxml::startredirection;
} elsif ($target eq 'edit') {
my $bgimg=&Apache::lonxml::get_all_text('/image',$parser,$style);
$Apache::edit::bgimgsrc=$bgimg;
$Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
$result=&Apache::edit::tag_start($target,$token,'Clickable Image').
&Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
$result.=&Apache::edit::browse(undef,'textnode',undef,$only).' ';
$result.=&Apache::edit::search(undef,'textnode').
&Apache::edit::end_row();
} elsif ($target eq "modified") {
$result=$token->[4].&Apache::edit::modifiedfield('/image',$parser);
}
return $result;
}
sub end_image {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
my $name = $Apache::imageresponse::curname;
if ($target eq 'web' || $target eq 'answer') {
my $image = &Apache::lonxml::endredirection();
&Apache::lonxml::debug("original image is $image");
if ( $Apache::imageresponse::conceptgroup
&& !&Apache::response::showallfoils()
) {
$Apache::response::conceptgroup{"$name.image"} = $image;
} else {
$Apache::response::foilgroup{"$name.image"} = $image;
}
} elsif ($target eq 'analyze') {
my $image = &Apache::lonxml::endredirection();
if ( $Apache::imageresponse::conceptgroup
&& !&Apache::response::showallfoils()
) {
$Apache::response::conceptgroup{"$name.image"} = $image;
} else {
$Apache::response::foilgroup{"$name.image"} = $image;
}
} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();
} elsif ($target eq 'tex') {
my $src = &Apache::lonxml::endredirection();
# There may be all sorts of whitespace on fore and aft:
$src =~ s/\s+$//s;
$src =~ s/^\s+//s;
#
# Gnuplot e.g. just generates the latex to put inplace.
#
my $graphinclude;
if ($src =~ /^%DYNAMICIMAGE/) {
# This is needed because the newline is not always passed -> tex.
# At present we don't care about the sizing info.
my ($commentline, $restofstuff) = split(/\n/, $src);
$graphinclude = $src;
$graphinclude =~ s/^$commentline//;
} elsif (!($src =~ /\\/)) {
my ($path,$file) = &Apache::londefdef::get_eps_image($src);
my ($height_param,$width_param)=
&Apache::londefdef::image_size($src,0.3,$parstack,$safeeval);
$graphinclude = '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'}';
} else {
$graphinclude = $src; # Already fully formed.
}
$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent '.$graphinclude;
}
return $result;
}
sub start_rectangle {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
$target eq 'analyze' || $target eq 'answer') {
&Apache::lonxml::startredirection;
} elsif ($target eq 'edit') {
my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser,$style);
$result=&Apache::edit::tag_start($target,$token,'Rectangle').
&Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
&Apache::edit::entercoord(undef,'textnode',undef,undef,'box').
&Apache::edit::end_row();
} elsif ($target eq "modified") {
&Apache::edit::deletecoorddata();
$result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser);
}
return $result;
}
sub grade_rectangle {
my ($spec,$x,$y) = @_;
&Apache::lonxml::debug("Spec is $spec");
my ($x1,$y1,$x2,$y2)=($spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
&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)=@_;
my $result;
if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
$target eq 'analyze' || $target eq 'answer') {
my $name = $Apache::imageresponse::curname;
my $area = &Apache::lonxml::endredirection;
$area=~s/\s//g;
&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:$area";
}
} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();
}
return $result;
}
sub start_polygon {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
$target eq 'analyze' || $target eq 'answer') {
&Apache::lonxml::startredirection;
} elsif ($target eq 'edit') {
my $coords=&Apache::lonxml::get_all_text('/polygon',$parser,$style);
$result=&Apache::edit::tag_start($target,$token,'Polygon').
&Apache::edit::editline($token->[1],$coords,'Coordinate list',40).
&Apache::edit::entercoord(undef,'textnode',undef,undef,'polygon').
&Apache::edit::end_row();
} elsif ($target eq "modified") {
$result=$token->[4].&Apache::edit::modifiedfield('/polygon',$parser);
}
return $result;
}
sub grade_polygon {
my ($spec,$x,$y) = @_;
&Apache::lonxml::debug("Spec is $spec");
$spec=~s/^polygon://;
my @polygon;
foreach my $coord (split('-',$spec)) {
my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/);
&Apache::lonxml::debug("x $x y $y");
push @polygon, {'x'=>$x,'y'=>$y};
}
#make end point start point
push @polygon, $polygon[0];
# cribbed from
# http://geometryalgorithms.com/Archive/algorithm_0103/algorithm_0103.htm
my $crossing = 0; # the crossing number counter
# loop through all edges of the polygon
for (my $i=0; $i<$#polygon; $i++) { # edge from V[i] to V[i+1]
if ((($polygon[$i]->{'y'} <= $y)
&& ($polygon[$i+1]->{'y'} > $y)) # an upward crossing
||
(($polygon[$i]->{'y'} > $y)
&& ($polygon[$i+1]->{'y'} <= $y))) { # a downward crossing
# compute the actual edge-ray intersect x-coordinate
my $vt = ($y - $polygon[$i]->{'y'})
/ ($polygon[$i+1]->{'y'} - $polygon[$i]->{'y'});
if ($x < $polygon[$i]->{'x'} + $vt *
($polygon[$i+1]->{'x'} - $polygon[$i]->{'x'})) { # x<intersect
$crossing++; # a valid crossing of y=P.y right of P.x
}
}
}
# 0 if even (out), and 1 if odd (in)
if ($crossing%2) {
return 'APPROX_ANS';
} else {
return 'INCORRECT';
}
}
sub end_polygon {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
$target eq 'analyze' || $target eq 'answer') {
my $name = $Apache::imageresponse::curname;
my $area = &Apache::lonxml::endredirection;
$area=~s/\s*//g;
&Apache::lonxml::debug("out is $area for $name");
if ( $Apache::imageresponse::conceptgroup
&& !&Apache::response::showallfoils()
) {
push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area";
} else {
push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area";
}
} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();
}
return $result;
}
1;
__END__
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