Annotation of loncom/homework/imageresponse.pm, revision 1.96

1.89      foxr        1: #
1.12      albertel    2: # The LearningOnline Network with CAPA
1.14      albertel    3: # image click response style
                      4: #
1.96    ! jms         5: # $Id: imageresponse.pm,v 1.95 2008/11/12 20:01:21 jms Exp $
1.14      albertel    6: #
                      7: # Copyright Michigan State University Board of Trustees
                      8: #
                      9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                     10: #
                     11: # LON-CAPA is free software; you can redistribute it and/or modify
                     12: # it under the terms of the GNU General Public License as published by
                     13: # the Free Software Foundation; either version 2 of the License, or
                     14: # (at your option) any later version.
                     15: #
                     16: # LON-CAPA is distributed in the hope that it will be useful,
                     17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     19: # GNU General Public License for more details.
                     20: #
                     21: # You should have received a copy of the GNU General Public License
                     22: # along with LON-CAPA; if not, write to the Free Software
                     23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     24: #
                     25: # /home/httpd/html/adm/gpl.txt
                     26: #
                     27: # http://www.lon-capa.org/
                     28: #
1.25      www        29: #FIXME LATER assumes multiple possible submissions but only one is possible 
                     30: #currently
1.3       albertel   31: 
1.95      jms        32: 
                     33: =head1 NAME
                     34: 
                     35: Apache::imageresponse
                     36: 
                     37: =head1 SYNOPSIS
                     38: 
                     39: Coordinates the response to clicking an image.
                     40: 
                     41: This is part of the LearningOnline Network with CAPA project
                     42: described at http://www.lon-capa.org.
                     43: 
1.96    ! jms        44: =head1 SUBROUTINES
1.95      jms        45: 
                     46: =over
                     47: 
1.96    ! jms        48: =item start_imageresponse()
1.95      jms        49: 
1.96    ! jms        50: =item end_imageresponse()
1.95      jms        51: 
1.96    ! jms        52: =item start_foilgroup()
1.95      jms        53: 
1.96    ! jms        54: =item getfoilcounts()
1.95      jms        55: 
1.96    ! jms        56: =item whichfoils()
1.95      jms        57: 
1.96    ! jms        58: =item prep_image()
1.95      jms        59: 
1.96    ! jms        60: =item draw_image()
1.95      jms        61: 
1.96    ! jms        62: =item displayfoils()
1.95      jms        63: 
1.96    ! jms        64: =item format_prior_response()
1.95      jms        65: 
1.96    ! jms        66: =item display_answers()
1.95      jms        67: 
1.96    ! jms        68: =item clean_up_image()
1.95      jms        69: 
1.96    ! jms        70: =item gradefoils()
1.95      jms        71: 
1.96    ! jms        72: =item stringify_submission()
1.95      jms        73: 
1.96    ! jms        74: =item get_submission()
1.95      jms        75: 
1.96    ! jms        76: =item end_foilgroup()
1.95      jms        77: 
1.96    ! jms        78: =item start_conceptgroup()
1.95      jms        79: 
1.96    ! jms        80: =item end_conceptgroup()
1.95      jms        81: 
1.96    ! jms        82: =item insert_foil()
1.95      jms        83: 
1.96    ! jms        84: =item start_foil()
1.95      jms        85: 
1.96    ! jms        86: =item end_foil()
1.95      jms        87: 
1.96    ! jms        88: =item start_text()
1.95      jms        89: 
1.96    ! jms        90: =item end_text()
1.95      jms        91: 
1.96    ! jms        92: =item start_image()
1.95      jms        93: 
1.96    ! jms        94: =item end_image()
1.95      jms        95: 
1.96    ! jms        96: =item start_rectangle()
1.95      jms        97: 
1.96    ! jms        98: =item grade_rectangle()
1.95      jms        99: 
1.96    ! jms       100: =item end_rectangle()
1.95      jms       101: 
1.96    ! jms       102: =item start_polygon()
1.95      jms       103: 
1.96    ! jms       104: =item grade_polygon()
1.95      jms       105: 
1.96    ! jms       106: =item end_polygon()
1.95      jms       107: 
                    108: =back
                    109: 
                    110: =cut
                    111: 
                    112: 
1.1       albertel  113: package Apache::imageresponse;
                    114: use strict;
1.51      albertel  115: use Image::Magick();
                    116: use Apache::randomlylabel();
                    117: use Apache::londefdef();
1.40      albertel  118: use Apache::Constants qw(:common :http);
1.51      albertel  119: use Apache::lonlocal;
1.65      albertel  120: use Apache::lonnet;
1.78      www       121: use lib '/home/httpd/lib/perl/';
                    122: use LONCAPA;
                    123:  
1.1       albertel  124: 
1.16      harris41  125: BEGIN {
1.36      albertel  126:     &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
1.1       albertel  127: }
                    128: 
                    129: sub start_imageresponse {
1.36      albertel  130:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    131:     my $result;
                    132:     #when in a radiobutton response use these
1.43      albertel  133:     &Apache::lonxml::register('Apache::imageresponse',
                    134: 			      ('foilgroup','foil','text','image','rectangle',
                    135: 			       'polygon','conceptgroup'));
1.36      albertel  136:     push (@Apache::lonxml::namespace,'imageresponse');
                    137:     my $id = &Apache::response::start_response($parstack,$safeeval);
1.51      albertel  138:     undef(%Apache::response::foilnames);
1.36      albertel  139:     if ($target eq 'meta') {
                    140: 	$result=&Apache::response::meta_package_write('imageresponse');
1.37      albertel  141:     } elsif ($target eq 'analyze') {
                    142: 	my $part_id="$Apache::inputtags::part.$id";
1.92      raeburn   143:         $Apache::lonhomework::analyze{"$part_id.type"} = 'imageresponse';
1.37      albertel  144: 	push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
1.84      foxr      145: 	push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} },
                    146: 	      1);
1.88      albertel  147:     } elsif ( $target eq 'edit' ) {
                    148: 	$result .= &Apache::edit::tag_start($target,$token).
                    149: 	    &Apache::edit::text_arg('Max Number Of Shown Foils:',
                    150: 				    'max',$token,'4').
                    151: 	    &Apache::edit::end_row().
                    152: 	    &Apache::edit::start_spanning_row();
                    153:     } elsif ( $target eq 'modified' ) {
                    154: 	my $constructtag=
                    155: 	    &Apache::edit::get_new_args($token,$parstack,$safeeval,'max');
                    156: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.36      albertel  157:     }
                    158:     return $result;
1.1       albertel  159: }
                    160: 
                    161: sub end_imageresponse {
1.30      albertel  162:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.74      albertel  163: 
1.90      foxr      164:     my $part_id     = $Apache::inputtags::part;
                    165:     my $response_id = $Apache::inputtags::response[-1]; 
1.89      foxr      166: 
1.74      albertel  167:     pop(@Apache::lonxml::namespace);
1.30      albertel  168:     &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
1.74      albertel  169: 
1.30      albertel  170:     my $result;
1.74      albertel  171:     if ($target eq 'edit') {
                    172: 	$result=&Apache::edit::end_table();
1.77      albertel  173:     } elsif ($target eq 'tex'
                    174: 	     && $Apache::lonhomework::type eq 'exam') {
1.74      albertel  175: 	$result=&Apache::inputtags::exam_score_line($target);
                    176:     }
                    177: 
1.51      albertel  178:     undef(%Apache::response::foilnames);
1.74      albertel  179:     
                    180:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || 
                    181: 	$target eq 'tex' || $target eq 'analyze') {
1.89      foxr      182: 	&Apache::lonxml::increment_counter(&Apache::response::repetition(), 
1.90      foxr      183: 					   "$part_id.$response_id");
1.89      foxr      184: 	if ($target eq 'analyze') {
                    185: 	    &Apache::lonhomework::set_bubble_lines();
                    186: 	}
                    187: 	
1.74      albertel  188:     }
                    189:     &Apache::response::end_response();
                    190: 
1.30      albertel  191:     return $result;
1.1       albertel  192: }
                    193: 
1.20      albertel  194: %Apache::response::foilgroup=();
1.1       albertel  195: sub start_foilgroup {
1.36      albertel  196:     %Apache::response::foilgroup=();
                    197:     $Apache::imageresponse::conceptgroup=0;
1.53      albertel  198:     &Apache::response::pushrandomnumber();
1.36      albertel  199:     return '';
1.1       albertel  200: }
                    201: 
1.2       albertel  202: sub getfoilcounts {
1.36      albertel  203:     my ($parstack,$safeeval)=@_;
1.12      albertel  204: 
1.36      albertel  205:     my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
                    206:     # +1 since instructors will count from 1
                    207:     my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
1.88      albertel  208:     if (&Apache::response::showallfoils()) { $max=$count; }
1.36      albertel  209:     return ($count,$max);
1.2       albertel  210: }
                    211: 
                    212: sub whichfoils {
1.36      albertel  213:     my ($max)=@_;
1.88      albertel  214:     return if (!defined(@{ $Apache::response::foilgroup{'names'} }));
1.36      albertel  215:     my @names = @{ $Apache::response::foilgroup{'names'} };
1.88      albertel  216:     my @whichopt;
1.36      albertel  217:     while ((($#whichopt+1) < $max) && ($#names > -1)) {
                    218: 	&Apache::lonxml::debug("Have $#whichopt max is $max");
                    219: 	my $aopt;
1.88      albertel  220: 	if (&Apache::response::showallfoils()) {
                    221: 	    $aopt=0;
                    222: 	} else {
1.36      albertel  223: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1.88      albertel  224: 	}
1.36      albertel  225: 	&Apache::lonxml::debug("From $#names elms, picking $aopt");
                    226: 	$aopt=splice(@names,$aopt,1);
                    227: 	&Apache::lonxml::debug("Picked $aopt");
1.88      albertel  228: 	push(@whichopt,$aopt);
1.36      albertel  229:     }
                    230:     return @whichopt;
1.2       albertel  231: }
                    232: 
1.40      albertel  233: sub prep_image {
1.42      albertel  234:     my ($image,$mode,$name)=@_;
1.85      albertel  235: 
                    236:     my ($x,$y)= &get_submission($name);
                    237:     &Apache::lonxml::debug("for $name drawing click at $x and $y");
1.82      albertel  238:     &draw_image($mode,$image,$x,$y,$Apache::response::foilgroup{"$name.area"});
                    239: }
                    240: 
                    241: sub draw_image {
                    242:     my ($mode,$image,$x,$y,$areas) = @_;
                    243: 
1.41      albertel  244:     my $id=&Apache::loncommon::get_cgi_id();
1.82      albertel  245: 
1.49      albertel  246:     my (%x,$i);
1.78      www       247:     $x{"cgi.$id.BGIMG"}=&escape($image);
1.82      albertel  248: 
1.40      albertel  249:     #draws 2 xs on the image at the clicked location
                    250:     #one in white and then one in red on top of the one in white
1.82      albertel  251: 
1.75      albertel  252:     if (defined($x)    && $x =~/\S/ 
                    253: 	&& defined($y) && $y =~/\S/ 
1.82      albertel  254: 	&& ($mode eq 'submission' || !&Apache::response::show_answer())
1.75      albertel  255: 	&& $mode ne 'answeronly') {
1.40      albertel  256: 	my $length = 6;
                    257: 	my $width = 1;
                    258: 	my $extrawidth = 2;
1.48      albertel  259: 	my $xmin=($x-$length);
                    260: 	my $xmax=($x+$length); 
                    261: 	my $ymin=($y-$length);
                    262: 	my $ymax=($y+$length);
                    263: 
1.49      albertel  264: 	$x{"cgi.$id.OBJTYPE"}.='LINE:';
                    265: 	$i=$x{"cgi.$id.OBJCOUNT"}++;
1.58      albertel  266: 	$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
1.49      albertel  267: 				      "FFFFFF",($width+$extrawidth)));
                    268: 	$x{"cgi.$id.OBJTYPE"}.='LINE:';
                    269: 	$i=$x{"cgi.$id.OBJCOUNT"}++;
1.58      albertel  270: 	$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
1.49      albertel  271: 				      "FFFFFF",($width+$extrawidth)));
                    272: 	$x{"cgi.$id.OBJTYPE"}.='LINE:';
                    273: 	$i=$x{"cgi.$id.OBJCOUNT"}++;
1.58      albertel  274: 	$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
1.49      albertel  275: 				      "FF0000",($width)));
                    276: 	$x{"cgi.$id.OBJTYPE"}.='LINE:';
                    277: 	$i=$x{"cgi.$id.OBJCOUNT"}++;
1.58      albertel  278: 	$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
1.49      albertel  279: 				      "FF0000",($width)));
1.40      albertel  280:     }
1.75      albertel  281:     if ($mode eq 'answer' || $mode eq 'answeronly') {
1.42      albertel  282: 	my $width = 1;
                    283: 	my $extrawidth = 2;
1.82      albertel  284: 	foreach my $area (@{ $areas }) {
1.43      albertel  285: 	    if ($area=~/^rectangle:/) {
1.49      albertel  286: 		$x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
                    287: 		$i=$x{"cgi.$id.OBJCOUNT"}++;
1.43      albertel  288: 		my ($x1,$y1,$x2,$y2)=
                    289: 		    ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
1.49      albertel  290: 		$x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
1.43      albertel  291: 					      ($width+$extrawidth)));
1.49      albertel  292: 		$x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
                    293: 		$i=$x{"cgi.$id.OBJCOUNT"}++;
                    294: 		$x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
1.43      albertel  295: 	    } elsif ($area=~/^polygon:(.*)/) {
1.49      albertel  296: 		$x{"cgi.$id.OBJTYPE"}.='POLYGON:';
                    297: 		$i=$x{"cgi.$id.OBJCOUNT"}++;
                    298: 		$x{"cgi.$id.OBJ$i"}=join(':',("FFFFFF",($width+$extrawidth)));
                    299: 		$x{"cgi.$id.OBJEXTRA$i"}=$1;
                    300: 		$x{"cgi.$id.OBJTYPE"}.='POLYGON:';
                    301: 		$i=$x{"cgi.$id.OBJCOUNT"}++;
                    302: 		$x{"cgi.$id.OBJ$i"}=join(':',("00FF00",$width));
                    303: 		$x{"cgi.$id.OBJEXTRA$i"}=$1;
1.43      albertel  304: 	    }
1.42      albertel  305: 	}
                    306:     }
1.93      raeburn   307:     &Apache::lonnet::appenv(\%x);
1.41      albertel  308:     return $id;
1.40      albertel  309: }
                    310: 
1.2       albertel  311: sub displayfoils {
1.36      albertel  312:     my ($target,@whichopt) = @_;
                    313:     my $result ='';
                    314:     my $temp=1;
1.82      albertel  315:     my @images;
1.85      albertel  316:     foreach my $name (@whichopt) {
1.36      albertel  317: 	$result.=$Apache::response::foilgroup{"$name.text"};
                    318: 	&Apache::lonxml::debug("Text is $result");
                    319: 	if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
                    320: 	my $image=$Apache::response::foilgroup{"$name.image"};
                    321: 	&Apache::lonxml::debug("image is $image");
1.91      albertel  322: 	if ( ($target eq 'web' || $target eq 'answer') 
                    323: 	     && $image !~ /^http:/ ) {
1.47      albertel  324: 	    $image=&clean_up_image($image);
1.82      albertel  325: 	}
                    326: 	push(@images,$image);
1.40      albertel  327: 	&Apache::lonxml::debug("image is $image");
1.36      albertel  328: 	if ( &Apache::response::show_answer() ) {
                    329: 	    if ($target eq 'tex') {
                    330: 		$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
                    331: 	    } else {
1.42      albertel  332: 		my $token=&prep_image($image,'answer',$name);
1.40      albertel  333: 		$result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
1.36      albertel  334: 	    }
                    335: 	} else {
                    336: 	    if ($target eq 'tex') {
                    337: 		$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
                    338: 	    } else {
1.85      albertel  339: 		my $respid=$Apache::inputtags::response['-1'];
                    340: 		my $token=&prep_image($image,'submission',$name);
1.87      albertel  341: 		my $input_id = "HWVAL_$respid:$temp";
                    342: 		my $id = $env{'form.request.prefix'}.$input_id;
1.85      albertel  343: 		$result.='<img onclick="image_response_click(\''.$id.'\',event);"
                    344: 	                       src="/adm/randomlabel.png?token='.$token.'" 
1.87      albertel  345:                                id="'.$id.'_imageresponse"
1.85      albertel  346:                                 />'.
                    347: 			       '<br />'.
1.87      albertel  348: 			       '<input type="hidden" name="'.$input_id.'_token" value="'.$token.'" />'.
                    349: 			       '<input type="hidden" name="'.$input_id.'" value="'.
1.85      albertel  350: 			       join(':',&get_submission($name)).'" />';
1.36      albertel  351: 	    }
                    352: 	}
                    353: 	$temp++;
                    354:     }
1.82      albertel  355:     if ($target eq 'web') {
                    356: 	&Apache::response::setup_prior_tries_hash(\&format_prior_response,
1.85      albertel  357: 						  [\@images,\@whichopt]);
1.82      albertel  358:     }
1.36      albertel  359:     return $result;
1.47      albertel  360: }
                    361: 
1.82      albertel  362: sub format_prior_response {
                    363:     my ($mode,$answer,$other_data) = @_;
1.85      albertel  364:     
                    365:     my $result;
1.82      albertel  366: 
1.85      albertel  367:     # make a copy of the data in the refs
                    368:     my @images = @{ $other_data->[0] };
                    369:     my @foils = @{ $other_data->[1] };
                    370:     foreach my $name (@foils) {
                    371: 	my $image = pop(@images);
                    372: 	my ($x,$y) = &get_submission($name,$answer);
                    373: 	my $token = &draw_image('submission',$image,$x,$y);
                    374: 	$result .=
                    375: 	    '<img class="LC_prior_image"
                    376:                   src="/adm/randomlabel.png?token='.$token.'" /><br />';
                    377:     }
                    378:     return $result;
1.82      albertel  379: }
                    380: 
1.75      albertel  381: sub display_answers {
                    382:     my ($target,$whichopt)=@_;
                    383: 
1.88      albertel  384:     my $result=&Apache::response::answer_header('imageresponse');
1.75      albertel  385:     foreach my $name (@$whichopt) {
                    386: 	my $image=$Apache::response::foilgroup{"$name.image"};
                    387: 	&Apache::lonxml::debug("image is $image");
1.91      albertel  388: 	if ( ($target eq 'web' || $target eq 'answer')
                    389: 	     && $image !~ /^http:/ ) {
1.75      albertel  390: 	    $image = &clean_up_image($image);
                    391: 	} 
                    392: 	my $token=&prep_image($image,'answeronly',$name);
                    393: 
                    394: 	$result.=&Apache::response::answer_part('imageresponse',"<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n");
                    395:     }
1.88      albertel  396:     $result.=&Apache::response::answer_footer('imageresponse');
1.75      albertel  397:     return $result;
                    398: }
                    399: 
1.47      albertel  400: sub clean_up_image {
                    401:     my ($image)=@_;
                    402:     if ($image =~ /\s*<img\s*/) {
1.50      albertel  403: 	($image) = ($image =~ /src\s*=\s*[\"\']([^\"\']+)[\"\']/i);
1.47      albertel  404: 	if ($image !~ /^http:/) {
                    405: 	    $image=&Apache::lonnet::hreflocation('',$image);
                    406: 	}
                    407: 	if (!$image) {
                    408: 	    $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
                    409: 	}
                    410:     } else {
                    411: 	$image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image);
1.66      foxr      412: 	&Apache::lonxml::debug("repcopying: $image");
1.64      raeburn   413: 	if (&Apache::lonnet::repcopy($image) ne 'ok') {
1.47      albertel  414: 	    $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
                    415: 	}
                    416:     }
                    417:     return $image;
1.2       albertel  418: }
                    419: 
1.3       albertel  420: sub gradefoils {
1.36      albertel  421:     my (@whichopt) = @_;
1.74      albertel  422: 
                    423:     my $partid = $Apache::inputtags::part;
                    424:     my $id     = $Apache::inputtags::response['-1'];
                    425: 
                    426:     if ($Apache::lonhomework::type eq 'exam') {
                    427: 	&Apache::response::scored_response($partid,$id);
                    428: 	return;
                    429:     }
                    430:     
1.85      albertel  431:     my @results;
1.36      albertel  432:     my $temp=1;
1.85      albertel  433:     my %response;
1.36      albertel  434:     foreach my $name (@whichopt) {
1.85      albertel  435: 	my ($x,$y) = split(':',$env{"form.HWVAL_$id:$temp"});
                    436: 	$response{$name} = $env{"form.HWVAL_$id:$temp"};
1.36      albertel  437: 	&Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
                    438: 	if (defined($x) && defined($y) &&
                    439: 	    defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
                    440: 	    my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
                    441: 	    my $grade="INCORRECT";
                    442: 	    foreach my $area (@areas) {
                    443: 		&Apache::lonxml::debug("Area is $area for $name");
                    444: 		$area =~ m/([a-z]*):/;
                    445: 		&Apache::lonxml::debug("Area of type $1");
                    446: 		if ($1 eq 'rectangle') {
                    447: 		    $grade=&grade_rectangle($area,$x,$y);
1.43      albertel  448: 		} elsif ($1 eq 'polygon') {
                    449: 		    $grade=&grade_polygon($area,$x,$y);
1.36      albertel  450: 		} else {
1.94      bisitz    451: 		    &Apache::lonxml::error(&mt('Unknown area style [_1]',$area));
1.36      albertel  452: 		}
                    453: 		&Apache::lonxml::debug("Area said $grade");
                    454: 		if ($grade eq 'APPROX_ANS') { last; }
                    455: 	    }
                    456: 	    &Apache::lonxml::debug("Foil was $grade");
1.85      albertel  457: 	    push(@results, $grade)
                    458: 	} else {
                    459: 	    push(@results, 'MISSING_ANSWER')
1.9       albertel  460: 	}
1.85      albertel  461: 	$temp++;
1.36      albertel  462:     }
1.85      albertel  463:     my ($result) = &Apache::inputtags::finalizeawards(\@results,[]);
                    464:     &Apache::lonxml::debug("Question is $result");
                    465: 
1.60      albertel  466:     my $part=$Apache::inputtags::part;
1.85      albertel  467:     my %previous=
                    468: 	&Apache::response::check_for_previous(&stringify_submission(\%response),
                    469: 					      $part,$id);
1.56      albertel  470:     if ($result 
                    471: 	&& $Apache::lonhomework::type eq 'survey') { $result='SUBMITTED'; }
1.60      albertel  472:     &Apache::response::handle_previous(\%previous,$result);
1.85      albertel  473:     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    474: 	&stringify_submission(\%response);
1.60      albertel  475:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$result;
1.74      albertel  476:     return;
1.3       albertel  477: }
                    478: 
1.85      albertel  479: sub stringify_submission {
                    480:     my ($response) = @_;
1.86      albertel  481:     return &Apache::lonnet::hash2str(%{ $response });
                    482: 
1.85      albertel  483:     
                    484: }
                    485: 
                    486: sub get_submission {
                    487:     my ($name,$string) = @_;
                    488: 
                    489:     if (!defined($string)) {
                    490: 	my $part=$Apache::inputtags::part;
                    491: 	my $respid=$Apache::inputtags::response['-1'];
                    492:    	$string = 
                    493: 	    $Apache::lonhomework::history{"resource.$part.$respid.submission"};
                    494:     }
                    495: 
1.86      albertel  496:     if ($string !~ /=/) {
1.85      albertel  497: 	return split(':',$string);
                    498:     } else {
1.86      albertel  499: 	my %response = &Apache::lonnet::str2hash($string);
1.85      albertel  500: 	return split(':',$response{$name});
                    501:     }
                    502: }
                    503: 
1.1       albertel  504: sub end_foilgroup {
1.36      albertel  505:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    506:     my $result='';
                    507:     my @whichopt;
1.75      albertel  508: 
1.38      albertel  509:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75      albertel  510: 	$target eq 'analyze' || $target eq 'answer') {
                    511: 
1.36      albertel  512: 	my ($count,$max) = &getfoilcounts($parstack,$safeeval);
                    513: 	if ($count>$max) { $count=$max }
                    514: 	&Apache::lonxml::debug("Count is $count from $max");
1.75      albertel  515: 
1.36      albertel  516: 	@whichopt = &whichfoils($max);
1.75      albertel  517: 
1.36      albertel  518: 	if ($target eq 'web' || $target eq 'tex') {
                    519: 	    $result=&displayfoils($target,@whichopt);
1.81      albertel  520: 	    $Apache::lonxml::post_evaluate=0;
1.36      albertel  521: 	} elsif ($target eq 'grade') {
1.65      albertel  522: 	    if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
1.37      albertel  523: 	} elsif ( $target eq 'analyze') {
                    524: 	    &Apache::response::analyze_store_foilgroup(\@whichopt,
                    525: 						      ['text','image','area']);
1.76      albertel  526: 	} elsif ($target eq 'answer'
                    527: 		 && $env{'form.answer_output_mode'} ne 'tex') {
1.75      albertel  528: 	    $result=&display_answers($target,\@whichopt);
1.37      albertel  529: 	}
1.75      albertel  530: 
1.36      albertel  531:     } elsif ($target eq 'edit') {
                    532: 	$result=&Apache::edit::end_table();
                    533:     }
1.53      albertel  534:     &Apache::response::poprandomnumber();
1.36      albertel  535:     return $result;
1.1       albertel  536: }
                    537: 
                    538: sub start_conceptgroup {
1.36      albertel  539:     $Apache::imageresponse::conceptgroup=1;
                    540:     %Apache::response::conceptgroup=();
                    541:     return '';
1.1       albertel  542: }
                    543: 
                    544: sub end_conceptgroup {
1.36      albertel  545:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    546:     $Apache::imageresponse::conceptgroup=0;
                    547:     my $result;
1.37      albertel  548:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
                    549: 	$target eq 'analyze') {
                    550: 	&Apache::response::pick_foil_for_concept($target,
                    551: 						 ['area','text','image'],
                    552: 						 \%Apache::hint::image,
                    553: 						 $parstack,$safeeval);
1.36      albertel  554:     } elsif ($target eq 'edit') {
                    555: 	$result=&Apache::edit::end_table();
                    556:     }
                    557:     return $result;
1.31      albertel  558: }
                    559: 
                    560: sub insert_foil {
                    561:     return '
                    562:        <foil>
                    563:            <image></image>
                    564:            <text></text>
                    565:            <rectangle></rectangle>
                    566:        </foil>
                    567: ';
1.1       albertel  568: }
                    569: 
1.12      albertel  570: $Apache::imageresponse::curname='';
1.1       albertel  571: sub start_foil {
1.36      albertel  572:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.67      albertel  573:     my $result;
1.37      albertel  574:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75      albertel  575: 	$target eq 'analyze' || $target eq 'answer') {
1.36      albertel  576: 	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.72      albertel  577: 	if ($name eq "") {
1.94      bisitz    578: 	    &Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
1.59      albertel  579: 	    $name=$Apache::lonxml::curdepth;
                    580: 	}
1.51      albertel  581: 	if (defined($Apache::response::foilnames{$name})) {
1.94      bisitz    582: 	    &Apache::lonxml::error(&mt("Foil name [_1] appears more than once. Foil names need to be unique."
                    583:                                       ,'<b><tt>'.$name.'</tt></b>'));
1.51      albertel  584: 	}
1.52      albertel  585: 	$Apache::response::foilnames{$name}++;
1.36      albertel  586: 	if ( $Apache::imageresponse::conceptgroup
1.88      albertel  587: 	     && !&Apache::response::showallfoils()
1.56      albertel  588: 	     ) {
1.36      albertel  589: 	    push(@{ $Apache::response::conceptgroup{'names'} }, $name);
                    590: 	} else {
                    591: 	    push(@{ $Apache::response::foilgroup{'names'} }, $name);
                    592: 	}
                    593: 	$Apache::imageresponse::curname=$name;
1.67      albertel  594:     } elsif ($target eq 'edit') {
                    595: 	$result  = &Apache::edit::tag_start($target,$token);
                    596: 	$result .= &Apache::edit::text_arg('Name:','name',$token);
                    597: 	$result .= &Apache::edit::end_row().
                    598: 	    &Apache::edit::start_spanning_row();
                    599:     } elsif ($target eq 'modified') {
                    600: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    601: 						     $safeeval,'name');
                    602: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    603:     } 
                    604:     return $result;;
1.1       albertel  605: }
                    606: 
                    607: sub end_foil {
1.26      albertel  608:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    609:     my $result;
                    610:     if ($target eq 'edit') {
                    611: 	$result=&Apache::edit::end_table();
                    612:     }
                    613:     return $result;
1.1       albertel  614: }
                    615: 
                    616: sub start_text {
1.36      albertel  617:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    618:     my $result='';
1.75      albertel  619:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
                    620: 	|| $target eq 'answer') { 
1.36      albertel  621: 	&Apache::lonxml::startredirection; 
                    622:     } elsif ($target eq 'edit') {
1.73      albertel  623: 	my $descr=&Apache::lonxml::get_all_text('/text',$parser,$style);
1.36      albertel  624: 	$result=&Apache::edit::tag_start($target,$token,'Task Description').
                    625: 	    &Apache::edit::editfield($token->[1],$descr,'Text',60,2).
                    626: 	    &Apache::edit::end_row();
                    627:     } elsif ($target eq "modified") {
1.39      albertel  628: 	$result=$token->[4].&Apache::edit::modifiedfield('/text',$parser);
1.36      albertel  629:     }
                    630:     return $result;
1.1       albertel  631: }
                    632: 
                    633: sub end_text {
1.36      albertel  634:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    635:     my $result;
1.75      albertel  636:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
                    637: 	|| $target eq 'answer') {
1.36      albertel  638: 	my $name = $Apache::imageresponse::curname;
                    639: 	if ( $Apache::imageresponse::conceptgroup
1.88      albertel  640: 	     && !&Apache::response::showallfoils()
1.56      albertel  641: 	     ) {
1.36      albertel  642: 	    $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
                    643: 	} else {
                    644: 	    $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
                    645: 	}
                    646:     } elsif ($target eq 'edit') {
                    647: 	$result=&Apache::edit::end_table();
                    648:     }
                    649:     return $result;
1.1       albertel  650: }
                    651: 
                    652: sub start_image {
1.36      albertel  653:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    654:     my $result='';
1.83      banghart  655:     my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
1.75      albertel  656:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
                    657: 	|| $target eq 'answer') { 
1.36      albertel  658: 	&Apache::lonxml::startredirection; 
                    659:     } elsif ($target eq 'edit') {
1.73      albertel  660: 	my $bgimg=&Apache::lonxml::get_all_text('/image',$parser,$style);
1.36      albertel  661: 	$Apache::edit::bgimgsrc=$bgimg;
                    662: 	$Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
                    663: 
                    664: 	$result=&Apache::edit::tag_start($target,$token,'Clickable Image').
                    665: 	    &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
1.83      banghart  666: 	$result.=&Apache::edit::browse(undef,'textnode',undef,$only).' ';
1.36      albertel  667: 	$result.=&Apache::edit::search(undef,'textnode').
                    668: 	    &Apache::edit::end_row();
                    669:     } elsif ($target eq "modified") {
1.39      albertel  670: 	$result=$token->[4].&Apache::edit::modifiedfield('/image',$parser);
1.36      albertel  671:     }
                    672:     return $result;
1.1       albertel  673: }
                    674: 
                    675: sub end_image {
1.36      albertel  676:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    677:     my $result;
                    678:     my $name = $Apache::imageresponse::curname;
1.75      albertel  679:     if ($target eq 'web' || $target eq 'answer') {
1.62      albertel  680: 	my $image = &Apache::lonxml::endredirection();
1.36      albertel  681: 	&Apache::lonxml::debug("original image is $image");
1.37      albertel  682: 	if ( $Apache::imageresponse::conceptgroup
1.88      albertel  683: 	     && !&Apache::response::showallfoils()
1.56      albertel  684: 	     ) {
1.37      albertel  685: 	    $Apache::response::conceptgroup{"$name.image"} = $image;
                    686: 	} else {
                    687: 	    $Apache::response::foilgroup{"$name.image"} = $image;
                    688: 	}
                    689:     } elsif ($target eq 'analyze') {
1.62      albertel  690: 	my $image = &Apache::lonxml::endredirection();
1.36      albertel  691: 	if ( $Apache::imageresponse::conceptgroup
1.88      albertel  692: 	     && !&Apache::response::showallfoils()
1.56      albertel  693: 	     ) {
1.36      albertel  694: 	    $Apache::response::conceptgroup{"$name.image"} = $image;
                    695: 	} else {
                    696: 	    $Apache::response::foilgroup{"$name.image"} = $image;
                    697: 	}
                    698:     } elsif ($target eq 'edit') {
                    699: 	$result=&Apache::edit::end_table();
                    700:     } elsif ($target eq 'tex') {
1.62      albertel  701: 	my $src = &Apache::lonxml::endredirection();
1.68      foxr      702: 
                    703: 	#  There may be all sorts of whitespace on fore and aft:
                    704: 
1.69      foxr      705: 	$src =~ s/\s+$//s;
                    706: 	$src =~ s/^\s+//s;
1.68      foxr      707: 
                    708: 	#
                    709: 	#  Gnuplot e.g. just generates the latex to put inplace.
                    710: 	#
                    711: 	my $graphinclude;
1.70      foxr      712: 	if ($src =~ /^%DYNAMICIMAGE/) {
                    713: 	    # This is needed because the newline is not always passed -> tex.
                    714: 	    # At present we don't care about the sizing info.
                    715: 
                    716: 	    my ($commentline, $restofstuff) = split(/\n/, $src);
1.68      foxr      717: 	    $graphinclude = $src;
1.70      foxr      718: 	    $graphinclude =~ s/^$commentline//;
1.68      foxr      719: 	} else {
                    720: 	    my ($path,$file) = &Apache::londefdef::get_eps_image($src);
                    721: 	    my ($height_param,$width_param)=
                    722: 		&Apache::londefdef::image_size($src,0.3,$parstack,$safeeval);
                    723: 	    $graphinclude = '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'}';
                    724: 	}
                    725: 	$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent '.$graphinclude;
1.36      albertel  726:     } 
                    727:     return $result;
1.1       albertel  728: }
                    729: 
                    730: sub start_rectangle {
1.36      albertel  731:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    732:     my $result='';
1.38      albertel  733:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75      albertel  734: 	$target eq 'analyze' || $target eq 'answer') { 
1.36      albertel  735: 	&Apache::lonxml::startredirection; 
                    736:     } elsif ($target eq 'edit') {
1.73      albertel  737: 	my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser,$style);
1.36      albertel  738: 	$result=&Apache::edit::tag_start($target,$token,'Rectangle').
                    739: 	    &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
1.44      albertel  740: 	    &Apache::edit::entercoord(undef,'textnode',undef,undef,'box').
1.36      albertel  741: 	    &Apache::edit::end_row();
                    742:     } elsif ($target eq "modified") {
1.44      albertel  743: 	&Apache::edit::deletecoorddata();
1.39      albertel  744: 	$result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser);
1.36      albertel  745:     }
                    746:     return $result;
1.1       albertel  747: }
                    748: 
1.3       albertel  749: sub grade_rectangle {
1.36      albertel  750:     my ($spec,$x,$y) = @_;
                    751:     &Apache::lonxml::debug("Spec is $spec");
1.43      albertel  752:     my ($x1,$y1,$x2,$y2)=($spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
1.36      albertel  753:     &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
                    754:     if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
                    755:     if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
                    756:     if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
                    757: 	return 'APPROX_ANS';
                    758:     }
                    759:     return 'INCORRECT';
1.3       albertel  760: }
                    761: 
1.1       albertel  762: sub end_rectangle {
1.36      albertel  763:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    764:     my $result;
1.38      albertel  765:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75      albertel  766: 	$target eq 'analyze' || $target eq 'answer') {
1.36      albertel  767: 	my $name = $Apache::imageresponse::curname;
                    768: 	my $area = &Apache::lonxml::endredirection;
1.54      albertel  769: 	$area=~s/\s//g;
1.36      albertel  770: 	&Apache::lonxml::debug("out is $area for $name");
                    771: 	if ( $Apache::imageresponse::conceptgroup
1.88      albertel  772: 	     && !&Apache::response::showallfoils()
1.56      albertel  773: 	     ) {
1.36      albertel  774: 	    push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
                    775: 	} else {
                    776: 	    push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
1.43      albertel  777: 	}
                    778:     } elsif ($target eq 'edit') {
                    779: 	$result=&Apache::edit::end_table();
                    780:     }
                    781:     return $result;
                    782: }
                    783: 
                    784: sub start_polygon {
                    785:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    786:     my $result='';
                    787:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75      albertel  788: 	$target eq 'analyze' || $target eq 'answer') { 
1.43      albertel  789: 	&Apache::lonxml::startredirection; 
                    790:     } elsif ($target eq 'edit') {
1.73      albertel  791: 	my $coords=&Apache::lonxml::get_all_text('/polygon',$parser,$style);
1.43      albertel  792: 	$result=&Apache::edit::tag_start($target,$token,'Polygon').
                    793: 	    &Apache::edit::editline($token->[1],$coords,'Coordinate list',40).
1.44      albertel  794: 	    &Apache::edit::entercoord(undef,'textnode',undef,undef,'polygon').
1.43      albertel  795: 	    &Apache::edit::end_row();
                    796:     } elsif ($target eq "modified") {
                    797: 	$result=$token->[4].&Apache::edit::modifiedfield('/polygon',$parser);
                    798:     }
                    799:     return $result;
                    800: }
                    801: 
                    802: sub grade_polygon {
                    803:     my ($spec,$x,$y) = @_;
                    804:     &Apache::lonxml::debug("Spec is $spec");
                    805:     $spec=~s/^polygon://;
                    806:     my @polygon;
                    807:     foreach my $coord (split('-',$spec)) {
                    808: 	my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/);
                    809: 	&Apache::lonxml::debug("x $x y $y");
                    810: 	push @polygon, {'x'=>$x,'y'=>$y};
                    811:     }
                    812:     #make end point start point
                    813:     push @polygon, $polygon[0];
                    814:     # cribbed from
                    815:     # http://geometryalgorithms.com/Archive/algorithm_0103/algorithm_0103.htm
                    816:     my $crossing = 0;    # the crossing number counter
                    817: 
                    818:     # loop through all edges of the polygon
                    819:     for (my $i=0; $i<$#polygon; $i++) {    # edge from V[i] to V[i+1]
                    820: 	if ((($polygon[$i]->{'y'} <= $y)
                    821: 	     && ($polygon[$i+1]->{'y'} > $y))    # an upward crossing
                    822: 	    || 
                    823: 	    (($polygon[$i]->{'y'} > $y) 
                    824: 	     && ($polygon[$i+1]->{'y'} <= $y))) { # a downward crossing
                    825: 	    # compute the actual edge-ray intersect x-coordinate
                    826:             my $vt = ($y - $polygon[$i]->{'y'}) 
                    827: 		/ ($polygon[$i+1]->{'y'} - $polygon[$i]->{'y'});
                    828:             if ($x < $polygon[$i]->{'x'} + $vt * 
                    829: 		($polygon[$i+1]->{'x'} - $polygon[$i]->{'x'})) { # x<intersect
                    830:                 $crossing++;   # a valid crossing of y=P.y right of P.x
                    831: 	    }
                    832: 	}
                    833:     }
                    834: 
                    835:     # 0 if even (out), and 1 if odd (in)
                    836:     if ($crossing%2) {
                    837: 	return 'APPROX_ANS';
                    838:     } else {
                    839: 	return 'INCORRECT';
                    840:     }
                    841: }
                    842: 
                    843: sub end_polygon {
                    844:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    845:     my $result;
                    846:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75      albertel  847: 	$target eq 'analyze' || $target eq 'answer') {
1.43      albertel  848: 	my $name = $Apache::imageresponse::curname;
                    849: 	my $area = &Apache::lonxml::endredirection;
1.48      albertel  850: 	$area=~s/\s*//g;
1.43      albertel  851: 	&Apache::lonxml::debug("out is $area for $name");
                    852: 	if ( $Apache::imageresponse::conceptgroup
1.88      albertel  853: 	     && !&Apache::response::showallfoils()
1.56      albertel  854: 	     ) {
1.43      albertel  855: 	    push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area";
                    856: 	} else {
                    857: 	    push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area";
1.36      albertel  858: 	}
                    859:     } elsif ($target eq 'edit') {
                    860: 	$result=&Apache::edit::end_table();
                    861:     }
                    862:     return $result;
1.1       albertel  863: }
                    864: 1;
                    865: __END__
                    866:  

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