# The LearningOnline Network with CAPA # image click response style # # $Id: imageresponse.pm,v 1.35 2003/09/22 20:49:01 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/ # # July,August 2003 H. K. Ng # #FIXME LATER assumes multiple possible submissions but only one is possible #currently package Apache::imageresponse; use Apache::randomlylabel; use strict; use Image::Magick; use GD; 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 $result; } sub end_imageresponse { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; &Apache::response::end_response; 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(); } return $result; } %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 { $aopt=int(&Math::Random::random_uniform() * ($#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 displayfoils { my ($target,@whichopt) = @_; my $result =''; my $name; my $temp=1; foreach $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.="
\n";} my $image=$Apache::response::foilgroup{"$name.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 { $result.="
\n"; } } else { if ($target eq 'tex') { $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n"; } else { $result.="
\n"; } } $temp++; } return $result; } sub gradefoils { my (@whichopt) = @_; 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 $name"); if (defined($x) && defined($y) && 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' || $target eq 'tex') { my ($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); } elsif ($target eq 'grade') { if ( defined $ENV{'form.submitted'}) { &gradefoils(@whichopt); } } } elsif ($target eq 'edit') { $result=&Apache::edit::end_table(); } 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') { if (defined(@{ $Apache::response::conceptgroup{'names'} })) { my @names = @{ $Apache::response::conceptgroup{'names'} }; my $pick=int(&Math::Random::random_uniform() * ($#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 $concept"); } } } elsif ($target eq 'edit') { $result=&Apache::edit::end_table(); } return $result; } sub insert_foil { return ' '; } $Apache::imageresponse::curname=''; sub start_foil { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') { 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)=@_; 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' || $target eq 'tex') { &Apache::lonxml::startredirection; } elsif ($target eq 'edit') { my $descr=&Apache::lonxml::get_all_text('/text',$parser); $result=&Apache::edit::tag_start($target,$token,'Task Description'). &Apache::edit::editfield($token->[1],$descr,'Text',60,2). &Apache::edit::end_row(); } elsif ($target eq "modified") { my $descr=&Apache::lonxml::get_all_text('/text',$parser); $result=$token->[4].&Apache::edit::modifiedfield($token); &Apache::lonxml::debug($result); } return $result; } sub end_text { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result; if ($target eq 'web' || $target eq 'tex') { 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 $result=''; if ($target eq 'web' || $target eq 'tex') { &Apache::lonxml::startredirection; } elsif ($target eq 'edit') { my $bgimg=&Apache::lonxml::get_all_text('/image',$parser); $Apache::edit::bgimgsrc=$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').' '; $result.=&Apache::edit::search(undef,'textnode'). &Apache::edit::end_row(); } elsif ($target eq "modified") { my $bgimg=&Apache::lonxml::get_all_text('/image',$parser); $result=$token->[4].&Apache::edit::modifiedfield($token); &Apache::lonxml::debug($result); } return $result; } sub end_image { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result; my $name = $Apache::imageresponse::curname; if ($target eq 'web') { my $image = &Apache::lonxml::endredirection; &Apache::lonxml::debug("original image is $image"); my $id=$Apache::inputtags::response['-1']; my $temp=1; my $x=$ENV{"form.HWVAL_$id:$temp.x"}; my $y=$ENV{"form.HWVAL_$id:$temp.y"}; if (defined ($x) && defined ($y)) { &Apache::lonxml::debug("x and y defined as $x,$y"); my $currentImage = &Apache::randomlylabel::get_image('/home/httpd/html'.$image,1); if (! defined($currentImage)) { &Apache::lonnet::logthis('Unable to create image object for '.$image); return ''; } my $red; if (!($red = $currentImage->colorResolve(255,0,0))) { $red = $currentImage->colorClosestHWB(255,0,0); } my $length = 6; $currentImage->line($x-$length,$y-$length,$x+$length,$y+$length,$red); $currentImage->line($x-$length,$y+$length,$x+$length,$y-$length,$red); my ($nameWOext) = ($image =~ /^.*\/(.*)\..*$/); &Apache::lonxml::debug("graph name $nameWOext"); my $webImageName = "/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_". $nameWOext.'.png'; #needs to be more random or specific my $newImageName = '/home/httpd'.$webImageName; my $imgfh = Apache::File->new('>'.$newImageName); print $imgfh $currentImage->png; $image = $webImageName; } &Apache::lonxml::debug("out 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 'edit') { $result=&Apache::edit::end_table(); } elsif ($target eq 'tex') { my $src = &Apache::lonxml::endredirection; $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); my $width_param = ''; my $height_param = ''; my $scaling = .3; my $image = Image::Magick->new; my $current_figure = $image->Read($src); $width_param = $image->Get('width') * $scaling;; $height_param = $image->Get('height') * $scaling;; undef $image; my $epssrc = $src; $epssrc =~ s/(\.gif|\.jpg)$/\.eps/i; if (not -e $epssrc) { my $localfile = $epssrc; $localfile =~ s/.*(\/res)/$1/; my $file; my $path; if ($localfile =~ m!(.*)/([^/]*)$!) { $file = $2; $path = $1.'/'; } my $signal_eps = 0; my @content_directory = &Apache::lonnet::dirlist($path); for (my $iy=0;$iy<=$#content_directory;$iy++) { my @tempo_array = split(/&/,$content_directory[$iy]); $content_directory[$iy] = $tempo_array[0]; if ($file eq $tempo_array[0]) { $signal_eps = 1; last; } } if ($signal_eps) { my $eps_file = &Apache::lonnet::getfile($localfile); } else { $localfile = $src; $localfile =~ s/.*(\/res)/$1/; my $as = &Apache::lonnet::getfile($src); } } my $file; my $path; if ($src =~ m!(.*)/([^/]*)$!) { $file = $2; $path = $1.'/'; } my $newsrc = $src; $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i; $file=~s/(\.gif|\.jpg|\.jpeg)$/\.eps/i; #do we have any specified size of the picture? my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval); my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval); my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval); if ($TeXwidth ne '') { $width_param = $TeXwidth; } elsif ($TeXheight ne '') { $width_param = $TeXheight/$height_param*$width_param; } elsif ($width ne '') { $width_param = $width*$scaling; } #where can we find the picture? if (-e $newsrc) { if ($path) { $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; } } else { my $temp_file; my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat"; $temp_file = Apache::File->new('>>'.$filename); print $temp_file "$src\n"; $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; } } return $result; } sub start_rectangle { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') { &Apache::lonxml::startredirection; } elsif ($target eq 'edit') { my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser); $result=&Apache::edit::tag_start($target,$token,'Rectangle'). &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40). &Apache::edit::entercoordpair(undef,'textnode'). &Apache::edit::end_row(); } elsif ($target eq "modified") { my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser); $result=$token->[4].&Apache::edit::modifiedfield($token); &Apache::lonxml::debug($result); } return $result; } sub grade_rectangle { my ($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)=@_; my $result; if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') { 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:$area"; } } elsif ($target eq 'edit') { $result=&Apache::edit::end_table(); } return $result; } 1; __END__