# The LON-CAPA image response handler # # Image click response style # # YEAR=2001 # 2/7,2/9,2/22,3/1,5/4,5/15,5/31,6/2,6/26 Guy Albertelli # 8/6 Scott Harrison #FIXME assumes multiple possible submissions but only one is possible currently package Apache::imageresponse; use strict; # ======================================================================= BEGIN sub BEGIN { &Apache::lonxml::register('Apache::imageresponse',('imageresponse')); } # ======================================================== Start image response sub start_imageresponse { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; #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); return ''; } # ========================================================== End image response sub end_imageresponse { &Apache::response::end_response; pop @Apache::lonxml::namespace; return ''; } %Apache::response::foilgroup = {}; # ============================================================ Start foil group sub start_foilgroup { %Apache::response::foilgroup = {}; $Apache::imageresponse::conceptgroup = 0; &Apache::response::setrandomnumber(); return ''; } # =================================== Get foil counts (returns 2 element array) sub getfoilcounts { my ($parstack,$safeeval) = @_; my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2'); # +1 since instructors will count from 1 my $count = $#{ $Apache::response::foilgroup{'names'} }+1; return ($count,$max); } # ============================================== Which foils (returns an array) sub whichfoils { my ($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 $aopt = int(rand($#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; } # ======================================= Display foils (returns scalar string) sub displayfoils { my (@whichopt) = @_; my $result =''; my $name; my $temp = 1; foreach $name (@whichopt) { $result .= $Apache::response::foilgroup{"$name.text"}."
\n"; my $image = $Apache::response::foilgroup{"$name.image"}; if ($Apache::lonhomework::history{'resource.'. $Apache::inputtags::part. '.solved'} =~ /^correct/) { $result .= "
\n"; } else { $result .= "
\n"; } $temp++; } return $result; } # ================================================================= Grade foils 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"} = $result; return ''; } # ======================================= End foil group (return scalar string) sub end_foilgroup { my ($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; } # ========================================================= Start concept group sub start_conceptgroup { $Apache::imageresponse::conceptgroup = 1; %Apache::response::conceptgroup = {}; return ''; } # =========================================================== End concept group sub end_conceptgroup { my ($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 ''; } $Apache::imageresponse::curname = ''; # ================================================================== Start foil sub start_foil { my ($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 ) { push(@{ $Apache::response::conceptgroup{'names'} }, $name); } else { push(@{ $Apache::response::foilgroup{'names'} }, $name); } $Apache::imageresponse::curname=$name; } return ''; } # ==================================================================== End foil sub end_foil { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; return ''; } # ================================================================== Start text sub start_text { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; if ($target eq 'web') { &Apache::lonxml::startredirection; } return ''; } # ==================================================================== End text sub end_text { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; if ($target eq 'web') { my $name = $Apache::imageresponse::curname; if ( $Apache::imageresponse::conceptgroup ) { $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection; } else { $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection; } } return ''; } # ================================================================= Start image sub start_image { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; if ($target eq 'web') { &Apache::lonxml::startredirection; } return ''; } # =================================================================== End image 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 ) { $Apache::response::conceptgroup{"$name.image"} = $image; } else { $Apache::response::foilgroup{"$name.image"} = $image; } } return ''; } # ============================================================= Start rectangle sub start_rectangle { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; if ($target eq 'web' || $target eq 'grade') { &Apache::lonxml::startredirection; } return ''; } # ============================================================= Grade rectangle sub grade_rectangle { my ($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 => $x1) { if ($x <= $x2) { if ($y => $y1) { if ($y <= $y2) { return 'APPROX_ANS'; } } } } return 'INCORRECT'; } # =============================================================== End rectangle sub end_rectangle { my ($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 ) { push @{ $Apache::response::conceptgroup{"$name.area"} }, "rectangle:$area"; } else { push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area"; } } return ''; } 1; __END__