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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