Annotation of loncom/homework/imageresponse.pm, revision 1.95
1.89 foxr 1: #
1.12 albertel 2: # The LearningOnline Network with CAPA
1.14 albertel 3: # image click response style
4: #
1.95 ! jms 5: # $Id: imageresponse.pm,v 1.94 2008/08/08 16:37:13 bisitz 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:
! 44: =head1 HANDLER SUBROUTINE
! 45:
! 46:
! 47:
! 48: =head1 OTHER SUBROUTINES
! 49:
! 50: =over
! 51:
! 52: =item *
! 53:
! 54: start_imageresponse()
! 55:
! 56: =item *
! 57:
! 58: end_imageresponse()
! 59:
! 60: =item *
! 61:
! 62: start_foilgroup()
! 63:
! 64: =item *
! 65:
! 66: getfoilcounts()
! 67:
! 68: =item *
! 69:
! 70: whichfoils()
! 71:
! 72: =item *
! 73:
! 74: prep_image()
! 75:
! 76: =item *
! 77:
! 78: draw_image()
! 79:
! 80: =item *
! 81:
! 82: displayfoils()
! 83:
! 84: =item *
! 85:
! 86: format_prior_response()
! 87:
! 88: =item *
! 89:
! 90: display_answers()
! 91:
! 92: =item *
! 93:
! 94: clean_up_image()
! 95:
! 96: =item *
! 97:
! 98: gradefoils()
! 99:
! 100: =item *
! 101:
! 102: stringify_submission()
! 103:
! 104: =item *
! 105:
! 106: get_submission()
! 107:
! 108: =item *
! 109:
! 110: end_foilgroup()
! 111:
! 112: =item *
! 113:
! 114: start_conceptgroup()
! 115:
! 116: =item *
! 117:
! 118: end_conceptgroup()
! 119:
! 120: =item *
! 121:
! 122: insert_foil()
! 123:
! 124: =item *
! 125:
! 126: start_foil()
! 127:
! 128: =item *
! 129:
! 130: end_foil()
! 131:
! 132: =item *
! 133:
! 134: start_text()
! 135:
! 136: =item *
! 137:
! 138: end_text()
! 139:
! 140: =item *
! 141:
! 142: start_image()
! 143:
! 144:
! 145: =item *
! 146:
! 147: end_image()
! 148:
! 149: =item *
! 150:
! 151: start_rectangle()
! 152:
! 153: =item *
! 154:
! 155: grade_rectangle()
! 156:
! 157: =item *
! 158:
! 159: end_rectangle()
! 160:
! 161: =item *
! 162:
! 163: start_polygon()
! 164:
! 165: =item *
! 166:
! 167: grade_polygon()
! 168:
! 169: =item *
! 170:
! 171: end_polygon()
! 172:
! 173: =back
! 174:
! 175: =cut
! 176:
! 177:
1.1 albertel 178: package Apache::imageresponse;
179: use strict;
1.51 albertel 180: use Image::Magick();
181: use Apache::randomlylabel();
182: use Apache::londefdef();
1.40 albertel 183: use Apache::Constants qw(:common :http);
1.51 albertel 184: use Apache::lonlocal;
1.65 albertel 185: use Apache::lonnet;
1.78 www 186: use lib '/home/httpd/lib/perl/';
187: use LONCAPA;
188:
1.1 albertel 189:
1.16 harris41 190: BEGIN {
1.36 albertel 191: &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
1.1 albertel 192: }
193:
194: sub start_imageresponse {
1.36 albertel 195: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
196: my $result;
197: #when in a radiobutton response use these
1.43 albertel 198: &Apache::lonxml::register('Apache::imageresponse',
199: ('foilgroup','foil','text','image','rectangle',
200: 'polygon','conceptgroup'));
1.36 albertel 201: push (@Apache::lonxml::namespace,'imageresponse');
202: my $id = &Apache::response::start_response($parstack,$safeeval);
1.51 albertel 203: undef(%Apache::response::foilnames);
1.36 albertel 204: if ($target eq 'meta') {
205: $result=&Apache::response::meta_package_write('imageresponse');
1.37 albertel 206: } elsif ($target eq 'analyze') {
207: my $part_id="$Apache::inputtags::part.$id";
1.92 raeburn 208: $Apache::lonhomework::analyze{"$part_id.type"} = 'imageresponse';
1.37 albertel 209: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
1.84 foxr 210: push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} },
211: 1);
1.88 albertel 212: } elsif ( $target eq 'edit' ) {
213: $result .= &Apache::edit::tag_start($target,$token).
214: &Apache::edit::text_arg('Max Number Of Shown Foils:',
215: 'max',$token,'4').
216: &Apache::edit::end_row().
217: &Apache::edit::start_spanning_row();
218: } elsif ( $target eq 'modified' ) {
219: my $constructtag=
220: &Apache::edit::get_new_args($token,$parstack,$safeeval,'max');
221: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.36 albertel 222: }
223: return $result;
1.1 albertel 224: }
225:
226: sub end_imageresponse {
1.30 albertel 227: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.74 albertel 228:
1.90 foxr 229: my $part_id = $Apache::inputtags::part;
230: my $response_id = $Apache::inputtags::response[-1];
1.89 foxr 231:
1.74 albertel 232: pop(@Apache::lonxml::namespace);
1.30 albertel 233: &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
1.74 albertel 234:
1.30 albertel 235: my $result;
1.74 albertel 236: if ($target eq 'edit') {
237: $result=&Apache::edit::end_table();
1.77 albertel 238: } elsif ($target eq 'tex'
239: && $Apache::lonhomework::type eq 'exam') {
1.74 albertel 240: $result=&Apache::inputtags::exam_score_line($target);
241: }
242:
1.51 albertel 243: undef(%Apache::response::foilnames);
1.74 albertel 244:
245: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
246: $target eq 'tex' || $target eq 'analyze') {
1.89 foxr 247: &Apache::lonxml::increment_counter(&Apache::response::repetition(),
1.90 foxr 248: "$part_id.$response_id");
1.89 foxr 249: if ($target eq 'analyze') {
250: &Apache::lonhomework::set_bubble_lines();
251: }
252:
1.74 albertel 253: }
254: &Apache::response::end_response();
255:
1.30 albertel 256: return $result;
1.1 albertel 257: }
258:
1.20 albertel 259: %Apache::response::foilgroup=();
1.1 albertel 260: sub start_foilgroup {
1.36 albertel 261: %Apache::response::foilgroup=();
262: $Apache::imageresponse::conceptgroup=0;
1.53 albertel 263: &Apache::response::pushrandomnumber();
1.36 albertel 264: return '';
1.1 albertel 265: }
266:
1.2 albertel 267: sub getfoilcounts {
1.36 albertel 268: my ($parstack,$safeeval)=@_;
1.12 albertel 269:
1.36 albertel 270: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
271: # +1 since instructors will count from 1
272: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
1.88 albertel 273: if (&Apache::response::showallfoils()) { $max=$count; }
1.36 albertel 274: return ($count,$max);
1.2 albertel 275: }
276:
277: sub whichfoils {
1.36 albertel 278: my ($max)=@_;
1.88 albertel 279: return if (!defined(@{ $Apache::response::foilgroup{'names'} }));
1.36 albertel 280: my @names = @{ $Apache::response::foilgroup{'names'} };
1.88 albertel 281: my @whichopt;
1.36 albertel 282: while ((($#whichopt+1) < $max) && ($#names > -1)) {
283: &Apache::lonxml::debug("Have $#whichopt max is $max");
284: my $aopt;
1.88 albertel 285: if (&Apache::response::showallfoils()) {
286: $aopt=0;
287: } else {
1.36 albertel 288: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1.88 albertel 289: }
1.36 albertel 290: &Apache::lonxml::debug("From $#names elms, picking $aopt");
291: $aopt=splice(@names,$aopt,1);
292: &Apache::lonxml::debug("Picked $aopt");
1.88 albertel 293: push(@whichopt,$aopt);
1.36 albertel 294: }
295: return @whichopt;
1.2 albertel 296: }
297:
1.40 albertel 298: sub prep_image {
1.42 albertel 299: my ($image,$mode,$name)=@_;
1.85 albertel 300:
301: my ($x,$y)= &get_submission($name);
302: &Apache::lonxml::debug("for $name drawing click at $x and $y");
1.82 albertel 303: &draw_image($mode,$image,$x,$y,$Apache::response::foilgroup{"$name.area"});
304: }
305:
306: sub draw_image {
307: my ($mode,$image,$x,$y,$areas) = @_;
308:
1.41 albertel 309: my $id=&Apache::loncommon::get_cgi_id();
1.82 albertel 310:
1.49 albertel 311: my (%x,$i);
1.78 www 312: $x{"cgi.$id.BGIMG"}=&escape($image);
1.82 albertel 313:
1.40 albertel 314: #draws 2 xs on the image at the clicked location
315: #one in white and then one in red on top of the one in white
1.82 albertel 316:
1.75 albertel 317: if (defined($x) && $x =~/\S/
318: && defined($y) && $y =~/\S/
1.82 albertel 319: && ($mode eq 'submission' || !&Apache::response::show_answer())
1.75 albertel 320: && $mode ne 'answeronly') {
1.40 albertel 321: my $length = 6;
322: my $width = 1;
323: my $extrawidth = 2;
1.48 albertel 324: my $xmin=($x-$length);
325: my $xmax=($x+$length);
326: my $ymin=($y-$length);
327: my $ymax=($y+$length);
328:
1.49 albertel 329: $x{"cgi.$id.OBJTYPE"}.='LINE:';
330: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 331: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
1.49 albertel 332: "FFFFFF",($width+$extrawidth)));
333: $x{"cgi.$id.OBJTYPE"}.='LINE:';
334: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 335: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
1.49 albertel 336: "FFFFFF",($width+$extrawidth)));
337: $x{"cgi.$id.OBJTYPE"}.='LINE:';
338: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 339: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
1.49 albertel 340: "FF0000",($width)));
341: $x{"cgi.$id.OBJTYPE"}.='LINE:';
342: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 343: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
1.49 albertel 344: "FF0000",($width)));
1.40 albertel 345: }
1.75 albertel 346: if ($mode eq 'answer' || $mode eq 'answeronly') {
1.42 albertel 347: my $width = 1;
348: my $extrawidth = 2;
1.82 albertel 349: foreach my $area (@{ $areas }) {
1.43 albertel 350: if ($area=~/^rectangle:/) {
1.49 albertel 351: $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
352: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.43 albertel 353: my ($x1,$y1,$x2,$y2)=
354: ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
1.49 albertel 355: $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
1.43 albertel 356: ($width+$extrawidth)));
1.49 albertel 357: $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
358: $i=$x{"cgi.$id.OBJCOUNT"}++;
359: $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
1.43 albertel 360: } elsif ($area=~/^polygon:(.*)/) {
1.49 albertel 361: $x{"cgi.$id.OBJTYPE"}.='POLYGON:';
362: $i=$x{"cgi.$id.OBJCOUNT"}++;
363: $x{"cgi.$id.OBJ$i"}=join(':',("FFFFFF",($width+$extrawidth)));
364: $x{"cgi.$id.OBJEXTRA$i"}=$1;
365: $x{"cgi.$id.OBJTYPE"}.='POLYGON:';
366: $i=$x{"cgi.$id.OBJCOUNT"}++;
367: $x{"cgi.$id.OBJ$i"}=join(':',("00FF00",$width));
368: $x{"cgi.$id.OBJEXTRA$i"}=$1;
1.43 albertel 369: }
1.42 albertel 370: }
371: }
1.93 raeburn 372: &Apache::lonnet::appenv(\%x);
1.41 albertel 373: return $id;
1.40 albertel 374: }
375:
1.2 albertel 376: sub displayfoils {
1.36 albertel 377: my ($target,@whichopt) = @_;
378: my $result ='';
379: my $temp=1;
1.82 albertel 380: my @images;
1.85 albertel 381: foreach my $name (@whichopt) {
1.36 albertel 382: $result.=$Apache::response::foilgroup{"$name.text"};
383: &Apache::lonxml::debug("Text is $result");
384: if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
385: my $image=$Apache::response::foilgroup{"$name.image"};
386: &Apache::lonxml::debug("image is $image");
1.91 albertel 387: if ( ($target eq 'web' || $target eq 'answer')
388: && $image !~ /^http:/ ) {
1.47 albertel 389: $image=&clean_up_image($image);
1.82 albertel 390: }
391: push(@images,$image);
1.40 albertel 392: &Apache::lonxml::debug("image is $image");
1.36 albertel 393: if ( &Apache::response::show_answer() ) {
394: if ($target eq 'tex') {
395: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
396: } else {
1.42 albertel 397: my $token=&prep_image($image,'answer',$name);
1.40 albertel 398: $result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
1.36 albertel 399: }
400: } else {
401: if ($target eq 'tex') {
402: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
403: } else {
1.85 albertel 404: my $respid=$Apache::inputtags::response['-1'];
405: my $token=&prep_image($image,'submission',$name);
1.87 albertel 406: my $input_id = "HWVAL_$respid:$temp";
407: my $id = $env{'form.request.prefix'}.$input_id;
1.85 albertel 408: $result.='<img onclick="image_response_click(\''.$id.'\',event);"
409: src="/adm/randomlabel.png?token='.$token.'"
1.87 albertel 410: id="'.$id.'_imageresponse"
1.85 albertel 411: />'.
412: '<br />'.
1.87 albertel 413: '<input type="hidden" name="'.$input_id.'_token" value="'.$token.'" />'.
414: '<input type="hidden" name="'.$input_id.'" value="'.
1.85 albertel 415: join(':',&get_submission($name)).'" />';
1.36 albertel 416: }
417: }
418: $temp++;
419: }
1.82 albertel 420: if ($target eq 'web') {
421: &Apache::response::setup_prior_tries_hash(\&format_prior_response,
1.85 albertel 422: [\@images,\@whichopt]);
1.82 albertel 423: }
1.36 albertel 424: return $result;
1.47 albertel 425: }
426:
1.82 albertel 427: sub format_prior_response {
428: my ($mode,$answer,$other_data) = @_;
1.85 albertel 429:
430: my $result;
1.82 albertel 431:
1.85 albertel 432: # make a copy of the data in the refs
433: my @images = @{ $other_data->[0] };
434: my @foils = @{ $other_data->[1] };
435: foreach my $name (@foils) {
436: my $image = pop(@images);
437: my ($x,$y) = &get_submission($name,$answer);
438: my $token = &draw_image('submission',$image,$x,$y);
439: $result .=
440: '<img class="LC_prior_image"
441: src="/adm/randomlabel.png?token='.$token.'" /><br />';
442: }
443: return $result;
1.82 albertel 444: }
445:
1.75 albertel 446: sub display_answers {
447: my ($target,$whichopt)=@_;
448:
1.88 albertel 449: my $result=&Apache::response::answer_header('imageresponse');
1.75 albertel 450: foreach my $name (@$whichopt) {
451: my $image=$Apache::response::foilgroup{"$name.image"};
452: &Apache::lonxml::debug("image is $image");
1.91 albertel 453: if ( ($target eq 'web' || $target eq 'answer')
454: && $image !~ /^http:/ ) {
1.75 albertel 455: $image = &clean_up_image($image);
456: }
457: my $token=&prep_image($image,'answeronly',$name);
458:
459: $result.=&Apache::response::answer_part('imageresponse',"<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n");
460: }
1.88 albertel 461: $result.=&Apache::response::answer_footer('imageresponse');
1.75 albertel 462: return $result;
463: }
464:
1.47 albertel 465: sub clean_up_image {
466: my ($image)=@_;
467: if ($image =~ /\s*<img\s*/) {
1.50 albertel 468: ($image) = ($image =~ /src\s*=\s*[\"\']([^\"\']+)[\"\']/i);
1.47 albertel 469: if ($image !~ /^http:/) {
470: $image=&Apache::lonnet::hreflocation('',$image);
471: }
472: if (!$image) {
473: $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
474: }
475: } else {
476: $image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image);
1.66 foxr 477: &Apache::lonxml::debug("repcopying: $image");
1.64 raeburn 478: if (&Apache::lonnet::repcopy($image) ne 'ok') {
1.47 albertel 479: $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
480: }
481: }
482: return $image;
1.2 albertel 483: }
484:
1.3 albertel 485: sub gradefoils {
1.36 albertel 486: my (@whichopt) = @_;
1.74 albertel 487:
488: my $partid = $Apache::inputtags::part;
489: my $id = $Apache::inputtags::response['-1'];
490:
491: if ($Apache::lonhomework::type eq 'exam') {
492: &Apache::response::scored_response($partid,$id);
493: return;
494: }
495:
1.85 albertel 496: my @results;
1.36 albertel 497: my $temp=1;
1.85 albertel 498: my %response;
1.36 albertel 499: foreach my $name (@whichopt) {
1.85 albertel 500: my ($x,$y) = split(':',$env{"form.HWVAL_$id:$temp"});
501: $response{$name} = $env{"form.HWVAL_$id:$temp"};
1.36 albertel 502: &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
503: if (defined($x) && defined($y) &&
504: defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
505: my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
506: my $grade="INCORRECT";
507: foreach my $area (@areas) {
508: &Apache::lonxml::debug("Area is $area for $name");
509: $area =~ m/([a-z]*):/;
510: &Apache::lonxml::debug("Area of type $1");
511: if ($1 eq 'rectangle') {
512: $grade=&grade_rectangle($area,$x,$y);
1.43 albertel 513: } elsif ($1 eq 'polygon') {
514: $grade=&grade_polygon($area,$x,$y);
1.36 albertel 515: } else {
1.94 bisitz 516: &Apache::lonxml::error(&mt('Unknown area style [_1]',$area));
1.36 albertel 517: }
518: &Apache::lonxml::debug("Area said $grade");
519: if ($grade eq 'APPROX_ANS') { last; }
520: }
521: &Apache::lonxml::debug("Foil was $grade");
1.85 albertel 522: push(@results, $grade)
523: } else {
524: push(@results, 'MISSING_ANSWER')
1.9 albertel 525: }
1.85 albertel 526: $temp++;
1.36 albertel 527: }
1.85 albertel 528: my ($result) = &Apache::inputtags::finalizeawards(\@results,[]);
529: &Apache::lonxml::debug("Question is $result");
530:
1.60 albertel 531: my $part=$Apache::inputtags::part;
1.85 albertel 532: my %previous=
533: &Apache::response::check_for_previous(&stringify_submission(\%response),
534: $part,$id);
1.56 albertel 535: if ($result
536: && $Apache::lonhomework::type eq 'survey') { $result='SUBMITTED'; }
1.60 albertel 537: &Apache::response::handle_previous(\%previous,$result);
1.85 albertel 538: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
539: &stringify_submission(\%response);
1.60 albertel 540: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$result;
1.74 albertel 541: return;
1.3 albertel 542: }
543:
1.85 albertel 544: sub stringify_submission {
545: my ($response) = @_;
1.86 albertel 546: return &Apache::lonnet::hash2str(%{ $response });
547:
1.85 albertel 548:
549: }
550:
551: sub get_submission {
552: my ($name,$string) = @_;
553:
554: if (!defined($string)) {
555: my $part=$Apache::inputtags::part;
556: my $respid=$Apache::inputtags::response['-1'];
557: $string =
558: $Apache::lonhomework::history{"resource.$part.$respid.submission"};
559: }
560:
1.86 albertel 561: if ($string !~ /=/) {
1.85 albertel 562: return split(':',$string);
563: } else {
1.86 albertel 564: my %response = &Apache::lonnet::str2hash($string);
1.85 albertel 565: return split(':',$response{$name});
566: }
567: }
568:
1.1 albertel 569: sub end_foilgroup {
1.36 albertel 570: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
571: my $result='';
572: my @whichopt;
1.75 albertel 573:
1.38 albertel 574: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 575: $target eq 'analyze' || $target eq 'answer') {
576:
1.36 albertel 577: my ($count,$max) = &getfoilcounts($parstack,$safeeval);
578: if ($count>$max) { $count=$max }
579: &Apache::lonxml::debug("Count is $count from $max");
1.75 albertel 580:
1.36 albertel 581: @whichopt = &whichfoils($max);
1.75 albertel 582:
1.36 albertel 583: if ($target eq 'web' || $target eq 'tex') {
584: $result=&displayfoils($target,@whichopt);
1.81 albertel 585: $Apache::lonxml::post_evaluate=0;
1.36 albertel 586: } elsif ($target eq 'grade') {
1.65 albertel 587: if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
1.37 albertel 588: } elsif ( $target eq 'analyze') {
589: &Apache::response::analyze_store_foilgroup(\@whichopt,
590: ['text','image','area']);
1.76 albertel 591: } elsif ($target eq 'answer'
592: && $env{'form.answer_output_mode'} ne 'tex') {
1.75 albertel 593: $result=&display_answers($target,\@whichopt);
1.37 albertel 594: }
1.75 albertel 595:
1.36 albertel 596: } elsif ($target eq 'edit') {
597: $result=&Apache::edit::end_table();
598: }
1.53 albertel 599: &Apache::response::poprandomnumber();
1.36 albertel 600: return $result;
1.1 albertel 601: }
602:
603: sub start_conceptgroup {
1.36 albertel 604: $Apache::imageresponse::conceptgroup=1;
605: %Apache::response::conceptgroup=();
606: return '';
1.1 albertel 607: }
608:
609: sub end_conceptgroup {
1.36 albertel 610: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
611: $Apache::imageresponse::conceptgroup=0;
612: my $result;
1.37 albertel 613: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
614: $target eq 'analyze') {
615: &Apache::response::pick_foil_for_concept($target,
616: ['area','text','image'],
617: \%Apache::hint::image,
618: $parstack,$safeeval);
1.36 albertel 619: } elsif ($target eq 'edit') {
620: $result=&Apache::edit::end_table();
621: }
622: return $result;
1.31 albertel 623: }
624:
625: sub insert_foil {
626: return '
627: <foil>
628: <image></image>
629: <text></text>
630: <rectangle></rectangle>
631: </foil>
632: ';
1.1 albertel 633: }
634:
1.12 albertel 635: $Apache::imageresponse::curname='';
1.1 albertel 636: sub start_foil {
1.36 albertel 637: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.67 albertel 638: my $result;
1.37 albertel 639: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 640: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 641: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.72 albertel 642: if ($name eq "") {
1.94 bisitz 643: &Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
1.59 albertel 644: $name=$Apache::lonxml::curdepth;
645: }
1.51 albertel 646: if (defined($Apache::response::foilnames{$name})) {
1.94 bisitz 647: &Apache::lonxml::error(&mt("Foil name [_1] appears more than once. Foil names need to be unique."
648: ,'<b><tt>'.$name.'</tt></b>'));
1.51 albertel 649: }
1.52 albertel 650: $Apache::response::foilnames{$name}++;
1.36 albertel 651: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 652: && !&Apache::response::showallfoils()
1.56 albertel 653: ) {
1.36 albertel 654: push(@{ $Apache::response::conceptgroup{'names'} }, $name);
655: } else {
656: push(@{ $Apache::response::foilgroup{'names'} }, $name);
657: }
658: $Apache::imageresponse::curname=$name;
1.67 albertel 659: } elsif ($target eq 'edit') {
660: $result = &Apache::edit::tag_start($target,$token);
661: $result .= &Apache::edit::text_arg('Name:','name',$token);
662: $result .= &Apache::edit::end_row().
663: &Apache::edit::start_spanning_row();
664: } elsif ($target eq 'modified') {
665: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
666: $safeeval,'name');
667: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
668: }
669: return $result;;
1.1 albertel 670: }
671:
672: sub end_foil {
1.26 albertel 673: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
674: my $result;
675: if ($target eq 'edit') {
676: $result=&Apache::edit::end_table();
677: }
678: return $result;
1.1 albertel 679: }
680:
681: sub start_text {
1.36 albertel 682: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
683: my $result='';
1.75 albertel 684: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
685: || $target eq 'answer') {
1.36 albertel 686: &Apache::lonxml::startredirection;
687: } elsif ($target eq 'edit') {
1.73 albertel 688: my $descr=&Apache::lonxml::get_all_text('/text',$parser,$style);
1.36 albertel 689: $result=&Apache::edit::tag_start($target,$token,'Task Description').
690: &Apache::edit::editfield($token->[1],$descr,'Text',60,2).
691: &Apache::edit::end_row();
692: } elsif ($target eq "modified") {
1.39 albertel 693: $result=$token->[4].&Apache::edit::modifiedfield('/text',$parser);
1.36 albertel 694: }
695: return $result;
1.1 albertel 696: }
697:
698: sub end_text {
1.36 albertel 699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
700: my $result;
1.75 albertel 701: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
702: || $target eq 'answer') {
1.36 albertel 703: my $name = $Apache::imageresponse::curname;
704: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 705: && !&Apache::response::showallfoils()
1.56 albertel 706: ) {
1.36 albertel 707: $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
708: } else {
709: $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
710: }
711: } elsif ($target eq 'edit') {
712: $result=&Apache::edit::end_table();
713: }
714: return $result;
1.1 albertel 715: }
716:
717: sub start_image {
1.36 albertel 718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
719: my $result='';
1.83 banghart 720: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
1.75 albertel 721: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
722: || $target eq 'answer') {
1.36 albertel 723: &Apache::lonxml::startredirection;
724: } elsif ($target eq 'edit') {
1.73 albertel 725: my $bgimg=&Apache::lonxml::get_all_text('/image',$parser,$style);
1.36 albertel 726: $Apache::edit::bgimgsrc=$bgimg;
727: $Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
728:
729: $result=&Apache::edit::tag_start($target,$token,'Clickable Image').
730: &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
1.83 banghart 731: $result.=&Apache::edit::browse(undef,'textnode',undef,$only).' ';
1.36 albertel 732: $result.=&Apache::edit::search(undef,'textnode').
733: &Apache::edit::end_row();
734: } elsif ($target eq "modified") {
1.39 albertel 735: $result=$token->[4].&Apache::edit::modifiedfield('/image',$parser);
1.36 albertel 736: }
737: return $result;
1.1 albertel 738: }
739:
740: sub end_image {
1.36 albertel 741: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
742: my $result;
743: my $name = $Apache::imageresponse::curname;
1.75 albertel 744: if ($target eq 'web' || $target eq 'answer') {
1.62 albertel 745: my $image = &Apache::lonxml::endredirection();
1.36 albertel 746: &Apache::lonxml::debug("original image is $image");
1.37 albertel 747: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 748: && !&Apache::response::showallfoils()
1.56 albertel 749: ) {
1.37 albertel 750: $Apache::response::conceptgroup{"$name.image"} = $image;
751: } else {
752: $Apache::response::foilgroup{"$name.image"} = $image;
753: }
754: } elsif ($target eq 'analyze') {
1.62 albertel 755: my $image = &Apache::lonxml::endredirection();
1.36 albertel 756: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 757: && !&Apache::response::showallfoils()
1.56 albertel 758: ) {
1.36 albertel 759: $Apache::response::conceptgroup{"$name.image"} = $image;
760: } else {
761: $Apache::response::foilgroup{"$name.image"} = $image;
762: }
763: } elsif ($target eq 'edit') {
764: $result=&Apache::edit::end_table();
765: } elsif ($target eq 'tex') {
1.62 albertel 766: my $src = &Apache::lonxml::endredirection();
1.68 foxr 767:
768: # There may be all sorts of whitespace on fore and aft:
769:
1.69 foxr 770: $src =~ s/\s+$//s;
771: $src =~ s/^\s+//s;
1.68 foxr 772:
773: #
774: # Gnuplot e.g. just generates the latex to put inplace.
775: #
776: my $graphinclude;
1.70 foxr 777: if ($src =~ /^%DYNAMICIMAGE/) {
778: # This is needed because the newline is not always passed -> tex.
779: # At present we don't care about the sizing info.
780:
781: my ($commentline, $restofstuff) = split(/\n/, $src);
1.68 foxr 782: $graphinclude = $src;
1.70 foxr 783: $graphinclude =~ s/^$commentline//;
1.68 foxr 784: } else {
785: my ($path,$file) = &Apache::londefdef::get_eps_image($src);
786: my ($height_param,$width_param)=
787: &Apache::londefdef::image_size($src,0.3,$parstack,$safeeval);
788: $graphinclude = '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'}';
789: }
790: $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent '.$graphinclude;
1.36 albertel 791: }
792: return $result;
1.1 albertel 793: }
794:
795: sub start_rectangle {
1.36 albertel 796: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
797: my $result='';
1.38 albertel 798: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 799: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 800: &Apache::lonxml::startredirection;
801: } elsif ($target eq 'edit') {
1.73 albertel 802: my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser,$style);
1.36 albertel 803: $result=&Apache::edit::tag_start($target,$token,'Rectangle').
804: &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
1.44 albertel 805: &Apache::edit::entercoord(undef,'textnode',undef,undef,'box').
1.36 albertel 806: &Apache::edit::end_row();
807: } elsif ($target eq "modified") {
1.44 albertel 808: &Apache::edit::deletecoorddata();
1.39 albertel 809: $result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser);
1.36 albertel 810: }
811: return $result;
1.1 albertel 812: }
813:
1.3 albertel 814: sub grade_rectangle {
1.36 albertel 815: my ($spec,$x,$y) = @_;
816: &Apache::lonxml::debug("Spec is $spec");
1.43 albertel 817: my ($x1,$y1,$x2,$y2)=($spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
1.36 albertel 818: &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
819: if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
820: if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
821: if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
822: return 'APPROX_ANS';
823: }
824: return 'INCORRECT';
1.3 albertel 825: }
826:
1.1 albertel 827: sub end_rectangle {
1.36 albertel 828: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
829: my $result;
1.38 albertel 830: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 831: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 832: my $name = $Apache::imageresponse::curname;
833: my $area = &Apache::lonxml::endredirection;
1.54 albertel 834: $area=~s/\s//g;
1.36 albertel 835: &Apache::lonxml::debug("out is $area for $name");
836: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 837: && !&Apache::response::showallfoils()
1.56 albertel 838: ) {
1.36 albertel 839: push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
840: } else {
841: push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
1.43 albertel 842: }
843: } elsif ($target eq 'edit') {
844: $result=&Apache::edit::end_table();
845: }
846: return $result;
847: }
848:
849: sub start_polygon {
850: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
851: my $result='';
852: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 853: $target eq 'analyze' || $target eq 'answer') {
1.43 albertel 854: &Apache::lonxml::startredirection;
855: } elsif ($target eq 'edit') {
1.73 albertel 856: my $coords=&Apache::lonxml::get_all_text('/polygon',$parser,$style);
1.43 albertel 857: $result=&Apache::edit::tag_start($target,$token,'Polygon').
858: &Apache::edit::editline($token->[1],$coords,'Coordinate list',40).
1.44 albertel 859: &Apache::edit::entercoord(undef,'textnode',undef,undef,'polygon').
1.43 albertel 860: &Apache::edit::end_row();
861: } elsif ($target eq "modified") {
862: $result=$token->[4].&Apache::edit::modifiedfield('/polygon',$parser);
863: }
864: return $result;
865: }
866:
867: sub grade_polygon {
868: my ($spec,$x,$y) = @_;
869: &Apache::lonxml::debug("Spec is $spec");
870: $spec=~s/^polygon://;
871: my @polygon;
872: foreach my $coord (split('-',$spec)) {
873: my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/);
874: &Apache::lonxml::debug("x $x y $y");
875: push @polygon, {'x'=>$x,'y'=>$y};
876: }
877: #make end point start point
878: push @polygon, $polygon[0];
879: # cribbed from
880: # http://geometryalgorithms.com/Archive/algorithm_0103/algorithm_0103.htm
881: my $crossing = 0; # the crossing number counter
882:
883: # loop through all edges of the polygon
884: for (my $i=0; $i<$#polygon; $i++) { # edge from V[i] to V[i+1]
885: if ((($polygon[$i]->{'y'} <= $y)
886: && ($polygon[$i+1]->{'y'} > $y)) # an upward crossing
887: ||
888: (($polygon[$i]->{'y'} > $y)
889: && ($polygon[$i+1]->{'y'} <= $y))) { # a downward crossing
890: # compute the actual edge-ray intersect x-coordinate
891: my $vt = ($y - $polygon[$i]->{'y'})
892: / ($polygon[$i+1]->{'y'} - $polygon[$i]->{'y'});
893: if ($x < $polygon[$i]->{'x'} + $vt *
894: ($polygon[$i+1]->{'x'} - $polygon[$i]->{'x'})) { # x<intersect
895: $crossing++; # a valid crossing of y=P.y right of P.x
896: }
897: }
898: }
899:
900: # 0 if even (out), and 1 if odd (in)
901: if ($crossing%2) {
902: return 'APPROX_ANS';
903: } else {
904: return 'INCORRECT';
905: }
906: }
907:
908: sub end_polygon {
909: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
910: my $result;
911: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 912: $target eq 'analyze' || $target eq 'answer') {
1.43 albertel 913: my $name = $Apache::imageresponse::curname;
914: my $area = &Apache::lonxml::endredirection;
1.48 albertel 915: $area=~s/\s*//g;
1.43 albertel 916: &Apache::lonxml::debug("out is $area for $name");
917: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 918: && !&Apache::response::showallfoils()
1.56 albertel 919: ) {
1.43 albertel 920: push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area";
921: } else {
922: push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area";
1.36 albertel 923: }
924: } elsif ($target eq 'edit') {
925: $result=&Apache::edit::end_table();
926: }
927: return $result;
1.1 albertel 928: }
929: 1;
930: __END__
931:
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