1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.410 2009/06/02 13:10:29 bisitz Exp $
5: #
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: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use Apache::File();
47: use Image::Magick;
48: use Apache::lonmenu();
49: use Apache::lonmeta();
50: use Apache::lonlocal;
51: use Apache::Constants qw(:common);
52: use File::Basename;
53: use LONCAPA();
54: # use Data::Dumper;
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62:
63: sub initialize_londefdef {
64: $Apache::londefdef::TD_redirection=0;
65: @Apache::londefdef::table = ();
66: $Apache::londefdef::select=0;
67: undef(@Apache::londefdef::description);
68: @Apache::londefdef::DD=(0);
69: @Apache::londefdef::DT=(0);
70: @Apache::londefdef::seenDT=(0);
71: $Apache::londefdef::list_index=0;
72: undef($Apache::londefdef::head);
73: undef($Apache::londefdef::title);
74: }
75:
76: #======================= TAG SUBROUTINES =====================
77: #-- <output>
78: sub start_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
81: return '';
82: }
83: sub end_output {
84: my ($target) = @_;
85: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
86: return '';
87: }
88: #-- <m> tag
89: sub start_m {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
91: my $currentstring = '';
92: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
93: if ($target eq 'web' || $target eq 'analyze') {
94: &Apache::lonxml::debug("M is starting with:$inside:");
95: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
96: if ($eval eq 'on') {
97: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
98: #&Apache::lonxml::debug("M is evaluated to:$inside:");
99: }
100: my $tex = $inside;
101: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
102: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
103: if ($Apache::lontexconvert::errorstring) {
104: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
105: $tex = &HTML::Entities::encode($tex,'<>&"');
106: my ($linenumber) =
107: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
108: if (defined($linenumber)) {
109: my @tex=split("\n",$tex);
110: $tex[$linenumber]='<b><font color="red">'.
111: $tex[$linenumber].'</font></b>';
112: $tex=join("\n",@tex);
113: }
114: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
115: $Apache::lontexconvert::errorstring='';
116: }
117: #&Apache::lonxml::debug("M is ends with:$currentstring:");
118: $Apache::lonxml::post_evaluate=0;
119: } elsif ($target eq 'tex') {
120:
121: $currentstring = $inside;
122: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
123: if ($eval eq 'on') {
124: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
125: }
126: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
127: # detect simple math mode entry exits, and convert them
128: # to use \ensuremath ... unless there's a \verb inside.
129: if (! ($currentstring=~/\\verb/)) {
130: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
131: $currentstring=~s/^(\s*)\$/$1/;
132: $currentstring=~s/\$(\s*)$/$1/;
133: $currentstring='\ensuremath{'.$currentstring.'}';
134: }
135: }
136: $Apache::lonxml::post_evaluate=0;
137: }
138: return $currentstring;
139: }
140:
141: sub end_m {
142: my ($target,$token) = @_;
143: my $currentstring = '';
144: if ($target eq 'tex') {
145: $currentstring = "";
146: }
147: return $currentstring;
148: }
149:
150: sub start_tthoption {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
152: my $result;
153: if ($target eq 'web' || $target eq 'webgrade') {
154: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
155: $style);
156: $inside=~s/^\s*//;
157: if ($env{'browser.mathml'}) {
158: &tth::ttmoptions($inside);
159: } else {
160: &tth::tthoptions($inside);
161: }
162: }
163: return $result;
164: }
165:
166: sub end_tthoption {
167: my ($target,$token) = @_;
168: my $result;
169: return $result;
170: }
171:
172: #-- <html> tag (end tag optional)
173: sub start_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
177: # start_body() takes care of emitting the <html>
178: } elsif ($target eq 'tex') {
179:
180: $currentstring .= &latex_header();
181: }
182: return $currentstring;
183: }
184:
185: sub end_html {
186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'webgrade') {
189: # end_body takes care of the </html>
190: }
191: return $currentstring;
192: }
193:
194: #-- <head> tag (end tag optional)
195: sub start_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' || $target eq 'webgrade') {
199: &Apache::lonxml::startredirection();
200: }
201: return $currentstring;
202: }
203:
204: sub end_head {
205: my ($target,$token) = @_;
206: my $currentstring = '';
207: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
208: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
209: # in case there is a </head> but no <head>
210: if ($Apache::lonxml::redirection) {
211: $Apache::londefdef::head = &Apache::lonxml::endredirection();
212: }
213: }
214: return $currentstring;
215: }
216:
217: #-- <map> tag (end tag required)
218: sub start_map {
219: my ($target,$token) = @_;
220: my $currentstring = '';
221: if ($target eq 'web' || $target eq 'webgrade') {
222: $currentstring = $token->[4];
223: }
224: return $currentstring;
225: }
226:
227: sub end_map {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web' || $target eq 'webgrade') {
231: $currentstring = $token->[2];
232: }
233: return $currentstring;
234: }
235:
236: #-- <select> tag (end tag required)
237: sub start_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web' || $target eq 'webgrade') {
241: $currentstring = $token->[4];
242: } elsif ($target eq 'tex') {
243: $Apache::londefdef::select=0;
244: }
245: return $currentstring;
246: }
247:
248: sub end_select {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if ($target eq 'web' || $target eq 'webgrade') {
252: $currentstring = $token->[2];
253: }
254: return $currentstring;
255: }
256:
257: #-- <option> tag (end tag optional)
258: sub start_option {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[4];
263: } elsif ($target eq 'tex') {
264: $Apache::londefdef::select++;
265: if ($Apache::londefdef::select == 1) {
266: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
267: } else {
268: $currentstring='\keephidden{';
269: }
270: }
271: return $currentstring;
272: }
273:
274: sub end_option {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: } elsif ($target eq 'tex') {
280: $currentstring='}';
281: }
282: return $currentstring;
283: }
284:
285: #-- <input> tag (end tag forbidden)
286: sub start_input {
287: my ($target,$token) = @_;
288: my $currentstring = '';
289: if ($target eq 'web' || $target eq 'webgrade') {
290: $currentstring = $token->[4];
291: }
292: return $currentstring;
293: }
294:
295: sub end_input {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web' || $target eq 'webgrade') {
299: $currentstring = $token->[2];
300: }
301: return $currentstring;
302: }
303:
304: #-- <textarea> tag (end tag required)
305: sub start_textarea {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[4];
310: }
311: return $currentstring;
312: }
313:
314: sub end_textarea {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web' || $target eq 'webgrade') {
318: $currentstring = $token->[2];
319: }
320: return $currentstring;
321: }
322:
323: #-- <form> tag (end tag required)
324: sub start_form {
325: my ($target,$token) = @_;
326: my $currentstring = '';
327: if ($target eq 'web' || $target eq 'webgrade') {
328: $currentstring = $token->[4];
329: }
330: return $currentstring;
331: }
332:
333: sub end_form {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web' || $target eq 'webgrade') {
337: $currentstring = $token->[2];
338: }
339: return $currentstring;
340: }
341:
342: #-- <title> tag (end tag required)
343: sub start_title {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
345: my $currentstring = '';
346: if ($target eq 'web' || $target eq 'webgrade') {
347: $Apache::londefdef::title =
348: &Apache::lonxml::get_all_text('/title',$parser,$style);
349: } elsif ($target eq 'tex') {
350: $currentstring .= '\keephidden{Title of the document: '
351: }
352: if ($target eq 'meta') {
353: $currentstring='<title>';
354: &start_output($target);
355: }
356: return $currentstring;
357: }
358:
359: sub end_title {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: # start_title takes care of swallowing the title
364: } elsif ($target eq 'tex') {
365: $currentstring .= '}';
366: }
367: if ($target eq 'meta') {
368: &end_output($target);
369: $currentstring='</title>';
370: }
371: return $currentstring;
372: }
373:
374: #-- <meta> tag (end tag forbidden)
375: sub start_meta {
376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
377: my $currentstring = '';
378: if ($target eq 'web' || $target eq 'webgrade') {
379: my $args='';
380: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
381: if ($args eq '') {
382: &Apache::lonxml::get_all_text("/meta",$parser,$style);
383: } else {
384: $currentstring = $token->[4];
385: }
386: } elsif ($target eq 'meta') {
387: unless (&Apache::lonxml::get_param
388: ('http-equiv',$parstack,$safeeval,undef,1)) {
389: my $name=$token->[2]->{'name'};
390: $name=~tr/A-Z/a-z/;
391: $name=~s/\s/\_/gs;
392: $name=~s/\W//gs;
393: if ($name) {
394: $currentstring='<'.$name;
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=~s/\"/\'/g;
399: $currentstring.=' display="'.$display.'"';
400: }
401: $currentstring.='>'.
402: &Apache::lonxml::get_param
403: ('content',$parstack,$safeeval,undef,1).
404: '</'.$name.'>';
405: }
406: my $display=&Apache::lonxml::get_param
407: ('display',$parstack,$safeeval,undef,1);
408: if ($display) {
409: $display=&HTML::Entities::encode($display,'<>&"');
410: $currentstring.='<'.$name.'.display>'.$display.
411: '</'.$name.'.display>';
412: }
413: }
414: } elsif ($target eq 'tex') {
415: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
416: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
417: if ((not defined $content) && (not defined $name)) {
418: &Apache::lonxml::startredirection();
419: }
420: } elsif ($target eq 'edit') {
421: $currentstring .= &Apache::edit::tag_start($target,$token);
422: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
423: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
424: $currentstring .= &Apache::edit::end_row();
425: } elsif ($target eq 'modified') {
426: my $constructtag =
427: &Apache::edit::get_new_args($token,$parstack,$safeeval,
428: 'name','content');
429: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
430: }
431: return $currentstring;
432: }
433:
434: sub end_meta {
435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
436: my $currentstring = '';
437: if ($target eq 'web' || $target eq 'webgrade') {
438: my $args='';
439: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
440: if ($args ne '') {
441: $currentstring = $token->[4];
442: }
443: } elsif ($target eq 'tex') {
444: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
445: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
446: if ((not defined $content) && (not defined $name)) {
447: &Apache::lonxml::endredirection();
448: }
449: }
450: return $currentstring;
451: }
452:
453: sub insert_meta {
454: return '
455: <meta />';
456: }
457:
458: # accessrule
459: sub start_accessrule {
460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
461: my $currentstring = '';
462: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
463: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
464: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
465: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
466:
467: my ($dom,$crs,$sec,$separator);
468: if ($type eq 'user') {
469: ($dom,$crs,$sec)=split(m{/},$realm);
470: $crs = &LONCAPA::clean_username($crs);
471: $separator = '/';
472: } else {
473: ($dom,$crs,$sec)=split(/\_/,$realm);
474: $crs = &LONCAPA::clean_courseid($crs);
475: $separator = '_';
476: }
477: $dom = &LONCAPA::clean_domain($dom);
478:
479: $sec =~s/\W//;
480: $realm = $dom;
481: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
482: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
483: $role=~s/\W//g;
484:
485: if ($target eq 'web') {
486: my $args='';
487: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
488: if ($args eq '') {
489: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
490: } else {
491: $currentstring = $token->[4];
492: }
493: }
494: if ($target eq 'meta') {
495: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
496: }
497: return $currentstring;
498: }
499:
500: sub end_accessrule {
501: my ($target,$token,$tagstack,$parstack,$parser) = @_;
502: my $currentstring = '';
503: if ($target eq 'web') {
504: my $args='';
505: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
506: if ($args ne '') {
507: $currentstring = $token->[4];
508: }
509: }
510: return $currentstring;
511: }
512:
513: sub generate_css_links {
514: my $links;
515: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
516: if ($css_href =~ /\S/) {
517: &Apache::lonxml::extlink($css_href);
518: $links .=
519: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
520: }
521: return $links;
522: }
523:
524: #-- <body> tag (end tag required)
525: sub start_body {
526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
527: my $currentstring = '';
528:
529: if ($target eq 'web' || $target eq 'webgrade') {
530: if ($Apache::lonhomework::parsing_a_problem) {
531: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
532: return '';
533: }
534:
535: if (&is_inside_of($tagstack, "head")) {
536: &end_head(@_);
537: }
538:
539: my $extra_head = &generate_css_links();
540:
541: # Breadcrumbs
542: &Apache::lonhtmlcommon::clear_breadcrumbs();
543: if ($env{'request.state'} eq 'construct') {
544: &Apache::lonhtmlcommon::add_breadcrumb({
545: 'text' => 'Construction Space',
546: 'href' => &Apache::loncommon::authorspace(),
547: });
548: &Apache::lonhtmlcommon::add_breadcrumb({
549: 'text' => 'HTML Editor',
550: 'href' => '',
551: });
552: } else {
553: # FIXME Where are we?
554: }
555:
556: $currentstring =
557: &Apache::loncommon::start_page($Apache::londefdef::title,
558: $Apache::londefdef::head
559: .$extra_head,
560: {'add_entries' => $token->[2],
561: # 'no_title' => 1,
562: 'force_register' => 1});
563:
564: $currentstring .= &Apache::lonhtmlcommon::breadcrumbs();
565:
566: my $header = '';
567: if ($env{'request.state'} ne 'published') {
568: $header=&Apache::lonmenu::constspaceform()
569: .&Apache::londefdef::edit_controls();
570: }
571: if ($env{'request.state'} eq 'construct') {
572: $currentstring.=&Apache::loncommon::head_subbox(
573: &Apache::loncommon::CSTR_pageheader()
574: .$header);
575: }
576: $currentstring.=&Apache::lonxml::message_location();
577: } elsif ($target eq 'tex') {
578: $currentstring = ''; # '\begin{document}' is in header.
579: }
580:
581: return $currentstring;
582: }
583:
584: sub edit_controls {
585: my ($nochgview) = @_;
586: my $result .= '
587: <form method="post">
588: <div class="LC_edit_problem_header">';
589: unless ($nochgview) {
590: $result .= '
591: <div class="LC_edit_problem_header_row1">'.
592: &Apache::lonxml::renderingoptions().'
593: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
594: </div>';
595: }
596: $result .= '
597: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" /></div>
598: </div>
599: </form>
600: ';
601: return $result;
602: }
603:
604: sub end_body {
605: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
606: my $currentstring = &end_p(); # Close off unclosed <p>
607: if ($target eq 'web' || $target eq 'webgrade') {
608: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
609: } elsif ($target eq 'tex') {
610: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
611: }
612: return $currentstring;
613: }
614:
615: # \begin{center} causes a new paragprah spacing that looks odd inside
616: # of a table cell. Same at the end of a \center but with a slightly
617: # larger space .. hence center_correction and center_end_correction.
618: #
619: sub center_correction { return '\vspace*{-6 mm}'; }
620: sub center_end_correction { return '\vspace*{-7 mm}'; }
621:
622: #-- <center> tag (end tag required)
623: sub start_center {
624: my ($target,$token,$tagstack) = @_;
625: my $currentstring = &end_p(); # Close off any prior para.
626: if ($target eq 'web' || $target eq 'webgrade') {
627: $currentstring .= $token->[4];
628: } elsif ($target eq 'tex') {
629: if (&is_inside_of($tagstack, "table")) {
630: $currentstring .= ¢er_correction();
631: }
632: $currentstring .= '\begin{center}';
633: }
634: return $currentstring;
635: }
636:
637: sub end_center {
638: my ($target,$token,$tagstack) = @_;
639: my $currentstring = '';
640: if ($target eq 'web' || $target eq 'webgrade') {
641: $currentstring = $token->[2];
642: } elsif ($target eq 'tex') {
643: $currentstring = '\end{center}';
644: if (&is_inside_of($tagstack, "table")) {
645: $currentstring .= ¢er_end_correction();
646: }
647: }
648: return $currentstring;
649: }
650:
651: #-- <b> tag (end tag required)
652: # NOTE: In TeX mode disables internal <p>
653: sub start_b {
654: my ($target,$token) = @_;
655: my $currentstring = '';
656: if ($target eq 'web' || $target eq 'webgrade') {
657: $currentstring = $token->[4];
658: } elsif ($target eq 'tex') {
659: &disable_para();
660: $currentstring .= '\textbf{';
661: }
662: return $currentstring;
663: }
664:
665: sub end_b {
666: my ($target,$token) = @_;
667: my $currentstring = '';
668: if ($target eq 'web' || $target eq 'webgrade') {
669: $currentstring = $token->[2];
670: } elsif ($target eq 'tex') {
671: &enable_para();
672: $currentstring = '}';
673: }
674: return $currentstring;
675: }
676:
677: #-- <strong> tag (end tag required)
678: # NOTE: in TeX mode disables internal <p>
679: sub start_strong {
680: my ($target,$token) = @_;
681: my $currentstring = '';
682: if ($target eq 'web' || $target eq 'webgrade') {
683: $currentstring = $token->[4];
684: } elsif ($target eq 'tex') {
685: &disable_para();
686: $currentstring = '\textbf{';
687: }
688: return $currentstring;
689: }
690:
691: sub end_strong {
692: my ($target,$token) = @_;
693: my $currentstring = '';
694: if ($target eq 'web' || $target eq 'webgrade') {
695: $currentstring = $token->[2];
696: } elsif ($target eq 'tex') {
697: &enable_para();
698: $currentstring = '}';
699: }
700: return $currentstring;
701: }
702:
703: #-- <h1> tag (end tag required)
704: sub start_h1 {
705: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
706: my $currentstring = &end_p(); # Close off any prior para.
707: if ($target eq 'web' || $target eq 'webgrade') {
708: $currentstring .= $token->[4];
709: } elsif ($target eq 'tex') {
710: my $pre;
711: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
712: if ($align eq 'center') {
713: $pre='\begin{center}';
714: } elsif ($align eq 'left') {
715: $pre='\rlap{';
716: } elsif ($align eq 'right') {
717: $pre=' \hfill \llap{';
718: }
719: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
720: if (not defined $TeXsize) {$TeXsize="large";}
721: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
722: } elsif ($target eq 'meta') {
723: $currentstring.='<subject>';
724: &start_output($target);
725: }
726: return $currentstring;
727: }
728:
729: sub end_h1 {
730: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
731: my $currentstring = '';
732: if ($target eq 'web' || $target eq 'webgrade') {
733: $currentstring .= $token->[2];
734: } elsif ($target eq 'tex') {
735: my $post='\vskip 0 mm ';
736: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
737: if ($align eq 'center') {
738: $post='\end{center}';
739: } elsif ($align eq 'left') {
740: $post='} \hfill'.'\vskip 0 mm ';
741: } elsif ($align eq 'right') {
742: $post='}'.'\vskip 0 mm ';
743: }
744: $currentstring .= '}}'.$post;
745: } elsif ($target eq 'meta') {
746: &end_output($target);
747: $currentstring='</subject>';
748: }
749: return $currentstring;
750: }
751:
752: #-- <h2> tag
753: sub start_h2 {
754: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
755: my $currentstring = &end_p(); # Close off any prior para.
756: if ($target eq 'web' || $target eq 'webgrade') {
757: $currentstring .= $token->[4];
758: } elsif ($target eq 'tex') {
759: my $pre;
760: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
761: if ($align eq 'center') {
762: $pre='\begin{center}';
763: } elsif ($align eq 'left') {
764: $pre='\rlap{';
765: } elsif ($align eq 'right') {
766: $pre=' \hfill \llap{';
767: }
768: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
769: if (not defined $TeXsize) {$TeXsize="large";}
770: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
771: }
772: return $currentstring;
773: }
774:
775: sub end_h2 {
776: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
777: my $currentstring = '';
778: if ($target eq 'web' || $target eq 'webgrade') {
779: $currentstring .= $token->[2];
780: } elsif ($target eq 'tex') {
781: my $post='\vskip 0 mm ';
782: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
783: if ($align eq 'center') {
784: $post='\end{center}';
785: } elsif ($align eq 'left') {
786: $post='} \hfill'.'\vskip 0 mm ';
787: } elsif ($align eq 'right') {
788: $post='}'.'\vskip 0 mm ';
789: }
790: $currentstring .= '}}'.$post;
791: }
792: return $currentstring;
793: }
794:
795: #-- <h3> tag
796: sub start_h3 {
797: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
798: my $currentstring = &end_p(); # Close off any prior para.
799: if ($target eq 'web' || $target eq 'webgrade') {
800: $currentstring .= $token->[4];
801: } elsif ($target eq 'tex') {
802: my $pre;
803: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
804: if ($align eq 'center') {
805: $pre='\begin{center}';
806: } elsif ($align eq 'left') {
807: $pre='\rlap{';
808: } elsif ($align eq 'right') {
809: $pre=' \hfill \llap{';
810: }
811: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
812: if (not defined $TeXsize) {$TeXsize="large";}
813: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
814: }
815: return $currentstring;
816: }
817:
818: sub end_h3 {
819: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
820: my $currentstring = '';
821: if ($target eq 'web' || $target eq 'webgrade') {
822: $currentstring .= $token->[2];
823: } elsif ($target eq 'tex') {
824: my $post='\vskip 0 mm ';
825: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
826: if ($align eq 'center') {
827: $post='\end{center}';
828: } elsif ($align eq 'left') {
829: $post='} \hfill'.'\vskip 0 mm ';
830: } elsif ($align eq 'right') {
831: $post='}'.'\vskip 0 mm ';
832: }
833: $currentstring .= '}}'.$post;
834: }
835: return $currentstring;
836: }
837:
838: #-- <h4> tag
839: sub start_h4 {
840: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
841: my $currentstring = &end_p(); # Close off any prior para.
842: if ($target eq 'web' || $target eq 'webgrade') {
843: $currentstring .= $token->[4];
844: } elsif ($target eq 'tex') {
845: my $pre;
846: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
847: if ($align eq 'center') {
848: $pre='\begin{center}';
849: } elsif ($align eq 'left') {
850: $pre='\rlap{';
851: } elsif ($align eq 'right') {
852: $pre=' \hfill \llap{';
853: }
854: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
855: if (not defined $TeXsize) {$TeXsize="large";}
856: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
857: }
858: return $currentstring;
859: }
860:
861: sub end_h4 {
862: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
863: my $currentstring = '';
864: if ($target eq 'web' || $target eq 'webgrade') {
865: $currentstring .= $token->[2];
866: } elsif ($target eq 'tex') {
867: my $post='\vskip 0 mm ';
868: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
869: if ($align eq 'center') {
870: $post='\end{center}';
871: } elsif ($align eq 'left') {
872: $post='} \hfill'.'\vskip 0 mm ';
873: } elsif ($align eq 'right') {
874: $post='}'.'\vskip 0 mm ';
875: }
876: $currentstring .= '}}'.$post;
877: }
878: return $currentstring;
879: }
880:
881: #-- <h5> tag
882: sub start_h5 {
883: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
884: my $currentstring = &end_p(); # Close off any prior paras.
885: if ($target eq 'web' || $target eq 'webgrade') {
886: $currentstring .= $token->[4];
887: } elsif ($target eq 'tex') {
888: my $pre;
889: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
890: if ($align eq 'center') {
891: $pre='\begin{center}';
892: } elsif ($align eq 'left') {
893: $pre='\rlap{';
894: } elsif ($align eq 'right') {
895: $pre=' \hfill \llap{';
896: }
897: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
898: if (not defined $TeXsize) {$TeXsize="large";}
899: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
900: }
901: return $currentstring;
902: }
903:
904: sub end_h5 {
905: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
906: my $currentstring = '';
907: if ($target eq 'web' || $target eq 'webgrade') {
908: $currentstring .= $token->[2];
909: } elsif ($target eq 'tex') {
910: my $post='\vskip 0 mm ';
911: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
912: if ($align eq 'center') {
913: $post='\end{center}';
914: } elsif ($align eq 'left') {
915: $post='} \hfill'.'\vskip 0 mm ';
916: } elsif ($align eq 'right') {
917: $post='}'.'\vskip 0 mm ';
918: }
919: $currentstring .= '}}'.$post;
920: }
921: return $currentstring;
922: }
923:
924: #-- <h6> tag
925: sub start_h6 {
926: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
927: my $currentstring = &end_p(); # Close off any prior paras.
928: if ($target eq 'web' || $target eq 'webgrade') {
929: $currentstring .= $token->[4];
930: } elsif ($target eq 'tex') {
931: my $pre;
932: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
933: if ($align eq 'center') {
934: $pre='\begin{center}';
935: } elsif ($align eq 'left') {
936: $pre='\rlap{';
937: } elsif ($align eq 'right') {
938: $pre=' \hfill \llap{';
939: }
940: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
941: if (not defined $TeXsize) {$TeXsize="large";}
942: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
943: }
944: return $currentstring;
945: }
946:
947: sub end_h6 {
948: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
949: my $currentstring = '';
950: if ($target eq 'web' || $target eq 'webgrade') {
951: $currentstring .= $token->[2];
952: } elsif ($target eq 'tex') {
953: my $post='\vskip 0 mm ';
954: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
955: if ($align eq 'center') {
956: $post='\end{center}';
957: } elsif ($align eq 'left') {
958: $post='} \hfill'.'\vskip 0 mm ';
959: } elsif ($align eq 'right') {
960: $post='}'.'\vskip 0 mm ';
961: }
962: $currentstring .= '}}'.$post;
963: }
964: return $currentstring;
965: }
966:
967: #--- <cite> tag (end tag required)
968: sub start_cite {
969: my ($target,$token) = @_;
970: my $currentstring = '';
971: if ($target eq 'web' || $target eq 'webgrade') {
972: $currentstring .= $token->[4];
973: } elsif ($target eq 'tex') {
974: $currentstring .= '\textit{';
975: }
976: return $currentstring;
977: }
978:
979: sub end_cite {
980: my ($target,$token) = @_;
981: my $currentstring = '';
982: if ($target eq 'web' || $target eq 'webgrade') {
983: $currentstring .= $token->[2];
984: } elsif ($target eq 'tex') {
985: $currentstring .= '}';
986: }
987: return $currentstring;
988: }
989:
990: #-- <i> tag (end tag required)
991: sub start_i {
992: my ($target,$token) = @_;
993: my $currentstring = '';
994: if ($target eq 'web' || $target eq 'webgrade') {
995: $currentstring .= $token->[4];
996: } elsif ($target eq 'tex') {
997: $currentstring .= '\textit{';
998: }
999: return $currentstring;
1000: }
1001:
1002: sub end_i {
1003: my ($target,$token) = @_;
1004: my $currentstring = '';
1005: if ($target eq 'web' || $target eq 'webgrade') {
1006: $currentstring .= $token->[2];
1007: } elsif ($target eq 'tex') {
1008: $currentstring .= '}';
1009: }
1010: return $currentstring;
1011: }
1012:
1013: #-- <address> tag (end tag required)
1014: sub start_address {
1015: my ($target,$token) = @_;
1016: my $currentstring = '';
1017: if ($target eq 'web' || $target eq 'webgrade') {
1018: $currentstring .= $token->[4];
1019: } elsif ($target eq 'tex') {
1020: $currentstring .= '\textit{';
1021: }
1022: return $currentstring;
1023: }
1024:
1025: sub end_address {
1026: my ($target,$token) = @_;
1027: my $currentstring = '';
1028: if ($target eq 'web' || $target eq 'webgrade') {
1029: $currentstring .= $token->[2];
1030: } elsif ($target eq 'tex') {
1031: $currentstring .= '}';
1032: }
1033: return $currentstring;
1034: }
1035:
1036: #-- <dfn> tag (end tag required)
1037: sub start_dfn {
1038: my ($target,$token) = @_;
1039: my $currentstring = '';
1040: if ($target eq 'web' || $target eq 'webgrade') {
1041: $currentstring .= $token->[4];
1042: } elsif ($target eq 'tex') {
1043: $currentstring .= '\textit{';
1044: }
1045: return $currentstring;
1046: }
1047:
1048: sub end_dfn {
1049: my ($target,$token) = @_;
1050: my $currentstring = '';
1051: if ($target eq 'web' || $target eq 'webgrade') {
1052: $currentstring .= $token->[2];
1053: } elsif ($target eq 'tex') {
1054: $currentstring .= '}';
1055: }
1056: return $currentstring;
1057: }
1058:
1059: #-- <tt> tag (end tag required)
1060: sub start_tt {
1061: my ($target,$token) = @_;
1062: my $currentstring = '';
1063: if ($target eq 'web' || $target eq 'webgrade') {
1064: $currentstring .= $token->[4];
1065: } elsif ($target eq 'tex') {
1066: $currentstring .= '\texttt{';
1067: }
1068: return $currentstring;
1069: }
1070:
1071: sub end_tt {
1072: my ($target,$token) = @_;
1073: my $currentstring = '';
1074: if ($target eq 'web' || $target eq 'webgrade') {
1075: $currentstring .= $token->[2];
1076: } elsif ($target eq 'tex') {
1077: $currentstring .= '}';
1078: }
1079: return $currentstring;
1080: }
1081:
1082: #-- <kbd> tag (end tag required)
1083: sub start_kbd {
1084: my ($target,$token) = @_;
1085: my $currentstring = '';
1086: if ($target eq 'web' || $target eq 'webgrade') {
1087: $currentstring .= $token->[4];
1088: } elsif ($target eq 'tex') {
1089: $currentstring .= '\texttt{';
1090: }
1091: return $currentstring;
1092: }
1093:
1094: sub end_kbd {
1095: my ($target,$token) = @_;
1096: my $currentstring = '';
1097: if ($target eq 'web' || $target eq 'webgrade') {
1098: $currentstring .= $token->[2];
1099: } elsif ($target eq 'tex') {
1100: $currentstring .= '}';
1101: }
1102: return $currentstring;
1103: }
1104:
1105: #-- <code> tag (end tag required)
1106: sub start_code {
1107: my ($target,$token) = @_;
1108: my $currentstring = '';
1109: if ($target eq 'web' || $target eq 'webgrade') {
1110: $currentstring .= $token->[4];
1111: } elsif ($target eq 'tex') {
1112: $currentstring .= '\texttt{';
1113: }
1114: return $currentstring;
1115: }
1116:
1117: sub end_code {
1118: my ($target,$token) = @_;
1119: my $currentstring = '';
1120: if ($target eq 'web' || $target eq 'webgrade') {
1121: $currentstring .= $token->[2];
1122: } elsif ($target eq 'tex') {
1123: $currentstring .= '}';
1124: }
1125: return $currentstring;
1126: }
1127:
1128: #-- <em> tag (end tag required)
1129: sub start_em {
1130: my ($target,$token) = @_;
1131: my $currentstring = '';
1132: if ($target eq 'web' || $target eq 'webgrade') {
1133: $currentstring .= $token->[4];
1134: } elsif ($target eq 'tex') {
1135: $currentstring .= '\emph{';
1136: }
1137: return $currentstring;
1138: }
1139:
1140: sub end_em {
1141: my ($target,$token) = @_;
1142: my $currentstring = '';
1143: if ($target eq 'web' || $target eq 'webgrade') {
1144: $currentstring .= $token->[2];
1145: } elsif ($target eq 'tex') {
1146: $currentstring .= '}';
1147: }
1148: return $currentstring;
1149: }
1150:
1151: #-- <q> tag (end tag required)
1152: sub start_q {
1153: my ($target,$token) = @_;
1154: my $currentstring = '';
1155: if ($target eq 'web' || $target eq 'webgrade') {
1156: $currentstring .= $token->[4];
1157: } elsif ($target eq 'tex') {
1158: $currentstring .= '\emph{';
1159: }
1160: return $currentstring;
1161: }
1162:
1163: sub end_q {
1164: my ($target,$token) = @_;
1165: my $currentstring = '';
1166: if ($target eq 'web' || $target eq 'webgrade') {
1167: $currentstring .= $token->[2];
1168: } elsif ($target eq 'tex') {
1169: $currentstring .= '}';
1170: }
1171: return $currentstring;
1172: }
1173:
1174: # <p> is a bit strange since it does not require a closing </p>
1175: # However in latex, we must often output closing stuff to end
1176: # environments and {}'s etc. Therefore we do all the work
1177: # of figuring out the ending strings in the start tag processing,
1178: # and provide a mechanism to output the stop text external
1179: # to tag processing.
1180: #
1181: {
1182:
1183: my $closing_string = ''; # String required to close <p>
1184:
1185: # Some tags are <p> fragile meaning that <p> inside of them
1186: # does not work within TeX mode. This is managed via the
1187: # counter below:
1188: #
1189:
1190: my $para_disabled = 0;
1191:
1192: sub disable_para {
1193: $para_disabled++;
1194: }
1195: sub enable_para {
1196: $para_disabled--;
1197: }
1198:
1199:
1200: #-- <p> tag (end tag optional)
1201: #optional attribute - align="center|left|right"
1202: sub start_p {
1203: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1204: my $currentstring = '';
1205: if ($target eq 'web' || $target eq 'webgrade') {
1206: $currentstring .= &end_p(); # close off prior para if in progress.
1207: $currentstring .= $token->[4];
1208: if (! ($currentstring =~ /\//)) {
1209: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1210: }
1211: } elsif ($target eq 'tex' && !$para_disabled) {
1212:
1213: $currentstring .= &end_p(); # close off prior para if in progress.
1214: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1215: if ($align eq 'center') {
1216: $currentstring .='\begin{center}\par ';
1217: $closing_string = '\end{center}';
1218: if (&is_inside_of($tagstack, "table")) {
1219: $currentstring = ¢er_correction().$currentstring;
1220: }
1221: } elsif ($align eq 'right') {
1222: $currentstring.="\n".'{\flushright ';
1223: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1224: $closing_string= "}\n";
1225: } elsif ($align eq 'left') {
1226: $currentstring.= "\n".'{\flushleft ';
1227: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1228: $closing_string = "}\n";
1229: } else {
1230: $currentstring.='\par ';
1231: if (&is_inside_of($tagstack, 'table')) {
1232: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1233: } else {
1234: $closing_string = '\strut\\\\\strut ';
1235: }
1236: }
1237:
1238: }
1239: return $currentstring;
1240: }
1241: #
1242: # End paragraph processing just requires that we output the
1243: # closing string that was saved and blank it.
1244: sub end_p {
1245: # Note only 'tex' mode uses disable_para and enable_para
1246: # so we don't need to know the target in the check below:
1247:
1248: if (!$para_disabled) {
1249: my $current_string = $closing_string;
1250: $closing_string = ''; # Not in a para anymore.
1251: return $current_string;
1252: } else {
1253: return '';
1254: }
1255:
1256: }
1257: }
1258: #-- <br> tag (end tag forbidden)
1259: sub start_br {
1260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1261: my $currentstring = '';
1262: if ($target eq 'web' || $target eq 'webgrade') {
1263: $currentstring .= $token->[4];
1264: } elsif ($target eq 'tex') {
1265: my @tempo=@$tagstack;
1266: my $signal=0;
1267: # Not going to factor this to is_inside_of since that would require
1268: # multiple stack traversals.
1269: #
1270: for (my $i=$#tempo;$i>=0;$i--) {
1271: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1272: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1273: $signal=1;
1274: }
1275: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1276: $signal = 1;
1277: }
1278: }
1279: if ($signal != 1) {
1280: $currentstring .= '\strut \\\\ \strut ';
1281: }
1282:
1283: }
1284: return $currentstring;
1285: }
1286:
1287: sub end_br {
1288: my ($target,$token) = @_;
1289: my $currentstring = '';
1290: if ($target eq 'web' || $target eq 'webgrade') {
1291: $currentstring .= $token->[2];
1292: }
1293: return $currentstring;
1294: }
1295:
1296: #-- <big> tag (end tag required)
1297: sub start_big {
1298: my ($target,$token) = @_;
1299: my $currentstring = '';
1300: if ($target eq 'web' || $target eq 'webgrade') {
1301: $currentstring .= $token->[4];
1302: } elsif ($target eq 'tex') {
1303: $currentstring .= '{\large ';
1304: }
1305: return $currentstring;
1306: }
1307:
1308: sub end_big {
1309: my ($target,$token) = @_;
1310: my $currentstring = '';
1311: if ($target eq 'web' || $target eq 'webgrade') {
1312: $currentstring .= $token->[2];
1313: } elsif ($target eq 'tex') {
1314: $currentstring .= '}';
1315: }
1316: return $currentstring;
1317: }
1318:
1319: #-- <small> tag (end tag required)
1320: sub start_small {
1321: my ($target,$token) = @_;
1322: my $currentstring = '';
1323: if ($target eq 'web' || $target eq 'webgrade') {
1324: $currentstring .= $token->[4];
1325: } elsif ($target eq 'tex') {
1326: $currentstring .= '{\footnotesize ';
1327: }
1328: return $currentstring;
1329: }
1330:
1331: sub end_small {
1332: my ($target,$token) = @_;
1333: my $currentstring = '';
1334: if ($target eq 'web' || $target eq 'webgrade') {
1335: $currentstring .= $token->[2];
1336: } elsif ($target eq 'tex') {
1337: $currentstring .= '}';
1338: }
1339: return $currentstring;
1340: }
1341:
1342: #-- <basefont> tag (end tag forbidden)
1343: sub start_basefont {
1344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1345: my $currentstring = '';
1346: if ($target eq 'web' || $target eq 'webgrade') {
1347: $currentstring = $token->[4];
1348: } elsif ($target eq 'tex') {
1349: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1350: if (defined $basesize) {
1351: $currentstring = '{\\'.$basesize.' ';
1352: }
1353: }
1354: return $currentstring;
1355: }
1356:
1357: sub end_basefont {
1358: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1359: my $currentstring = '';
1360: if ($target eq 'web' || $target eq 'webgrade') {
1361: $currentstring = $token->[4];
1362: } elsif ($target eq 'tex') {
1363: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1364: if (defined $basesize) {
1365: $currentstring = '}';
1366: }
1367: }
1368: return $currentstring;
1369: }
1370:
1371: #-- <font> tag (end tag required)
1372: sub start_font {
1373: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1374: my $currentstring = '';
1375: if ($target eq 'web' || $target eq 'webgrade') {
1376: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1377: $currentstring = $token->[4];
1378: } elsif ($target eq 'tex') {
1379: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1380: if (defined $fontsize) {
1381: $currentstring = '{\\'.$fontsize.' ';
1382: }
1383: }
1384: return $currentstring;
1385: }
1386:
1387: sub end_font {
1388: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1389: my $currentstring = '';
1390: if ($target eq 'web' || $target eq 'webgrade') {
1391: $currentstring = $token->[2];
1392: } elsif ($target eq 'tex') {
1393: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1394: if (defined $fontsize) {
1395: $currentstring = '}';
1396: }
1397: }
1398: return $currentstring;
1399: }
1400:
1401: #-- <strike> tag (end tag required)
1402: sub start_strike {
1403: my ($target,$token) = @_;
1404: my $currentstring = '';
1405: if ($target eq 'web' || $target eq 'webgrade') {
1406: $currentstring .= $token->[4];
1407: } elsif ($target eq 'tex') {
1408: &Apache::lonxml::startredirection();
1409: }
1410: return $currentstring;
1411: }
1412:
1413: sub end_strike {
1414: my ($target,$token) = @_;
1415: my $currentstring = '';
1416: if ($target eq 'web' || $target eq 'webgrade') {
1417: $currentstring .= $token->[2];
1418: } elsif ($target eq 'tex') {
1419: $currentstring=&Apache::lonxml::endredirection();
1420: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1421: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1422: $currentstring=~s/(\S)\s*$/$1\}/;
1423: }
1424: return $currentstring;
1425: }
1426:
1427: #-- <s> tag (end tag required)
1428: sub start_s {
1429: my ($target,$token) = @_;
1430: my $currentstring = '';
1431: if ($target eq 'web' || $target eq 'webgrade') {
1432: $currentstring .= $token->[4];
1433: } elsif ($target eq 'tex') {
1434: &Apache::lonxml::startredirection();
1435: }
1436: return $currentstring;
1437: }
1438:
1439: sub end_s {
1440: my ($target,$token) = @_;
1441: my $currentstring = '';
1442: if ($target eq 'web' || $target eq 'webgrade') {
1443: $currentstring .= $token->[2];
1444: } elsif ($target eq 'tex') {
1445: $currentstring=&Apache::lonxml::endredirection();
1446: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1447: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1448: $currentstring=~s/(\S)\s*$/$1\}/;
1449: }
1450: return $currentstring;
1451: }
1452:
1453: #-- <sub> tag (end tag required)
1454: sub start_sub {
1455: my ($target,$token) = @_;
1456: my $currentstring = '';
1457: if ($target eq 'web' || $target eq 'webgrade') {
1458: $currentstring .= $token->[4];
1459: } elsif ($target eq 'tex') {
1460: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1461: }
1462: return $currentstring;
1463: }
1464:
1465: sub end_sub {
1466: my ($target,$token) = @_;
1467: my $currentstring = '';
1468: if ($target eq 'web' || $target eq 'webgrade') {
1469: $currentstring .= $token->[2];
1470: } elsif ($target eq 'tex') {
1471: $currentstring .= '}}';
1472: }
1473: return $currentstring;
1474: }
1475:
1476: #-- <sup> tag (end tag required)
1477: sub start_sup {
1478: my ($target,$token) = @_;
1479: my $currentstring = '';
1480: if ($target eq 'web' || $target eq 'webgrade') {
1481: $currentstring .= $token->[4];
1482: } elsif ($target eq 'tex') {
1483: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1484: }
1485: return $currentstring;
1486: }
1487:
1488: sub end_sup {
1489: my ($target,$token) = @_;
1490: my $currentstring = '';
1491: if ($target eq 'web' || $target eq 'webgrade') {
1492: $currentstring .= $token->[2];
1493: } elsif ($target eq 'tex') {
1494: $currentstring .= '}}';
1495: }
1496: return $currentstring;
1497: }
1498:
1499: #-- <hr> tag (end tag forbidden)
1500: sub start_hr {
1501: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1502: my $currentstring = &end_p(); # End enclosing para.
1503: if ($target eq 'web' || $target eq 'webgrade') {
1504: $currentstring .= $token->[4];
1505: } elsif ($target eq 'tex') {
1506:
1507: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1508: #
1509: my $restart_sub = 0;
1510: my $restart_sup = 0;
1511:
1512: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1513: # using the start_ stop_ functions.. those tags only care about
1514: # $target.
1515:
1516: if (&is_inside_of($tagstack, "sub")) {
1517: $restart_sub = 1;
1518: $currentstring .= &end_sub($target, $token, $tagstack,
1519: $parstack, $parser, $safeeval);
1520: }
1521: if (&is_inside_of($tagstack, "sup")) {
1522: $restart_sup = 1;
1523: $currentstring .= &end_sup($target, $token, $tagstack,
1524: $parstack, $parser, $safeeval);
1525: }
1526:
1527: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1528: if (defined $LaTeXwidth) {
1529: if ($LaTeXwidth=~/^%/) {
1530: substr($LaTeXwidth,0,1)='';
1531: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1532: }
1533: } else {
1534: $LaTeXwidth ='0.9\textwidth';
1535: }
1536: my ($pre,$post);
1537: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1538: if (($align eq 'center') || (not defined $align)) {
1539: $pre=''; $post='';
1540: } elsif ($align eq 'left') {
1541: $pre='\rlap{'; $post='} \hfill';
1542: } elsif ($align eq 'right') {
1543: $pre=' \hfill \llap{'; $post='}';
1544: }
1545: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1546: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1547: # Turn stuff back on that we can't be inside of.
1548:
1549: if ($restart_sub) {
1550: $currentstring .= &start_sub($target, $token, $tagstack,
1551: $parstack, $parser, $safeeval);
1552: }
1553: if ($restart_sup) {
1554: $currentstring .= &start_sup($target, $token, $tagstack,
1555: $parstack, $parser, $safeeval);
1556: }
1557: }
1558: return $currentstring;
1559: }
1560:
1561: sub end_hr {
1562: my ($target,$token) = @_;
1563: my $currentstring = '';
1564: if ($target eq 'web' || $target eq 'webgrade') {
1565: $currentstring .= $token->[2];
1566: }
1567: return $currentstring;
1568: }
1569:
1570: #-- <div> tag (end tag required)
1571: {
1572:
1573: # Since div can be nested, the stack below is used
1574: # in 'tex' mode to store the ending strings
1575: # for the div stack.
1576:
1577: my @div_end_stack;
1578:
1579: sub start_div {
1580: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1581: my $currentstring = &end_p(); # Close enclosing para.
1582: if ($target eq 'web' || $target eq 'webgrade') {
1583: $currentstring .= $token->[4];
1584: }
1585: if ($target eq 'tex') {
1586: # 4 possible alignments: left, right, center, and -missing-.
1587: # If inside a table row, we must let the table logic
1588: # do the alignment, however.
1589: #
1590:
1591: my $endstring = '';
1592:
1593: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1594: $safeeval, undef, 1));
1595: if ($align eq 'center') {
1596: $currentstring .= '\begin{center}';
1597: $endstring = '\end{center}';
1598: if (&is_inside_of($tagstack, "table")) {
1599: $currentstring = ¢er_correction().$currentstring;
1600: $endstring .= ¢er_end_correction();
1601: }
1602: }
1603: elsif ($align eq 'right') {
1604: $currentstring .= '\begin{flushright}';
1605: $endstring .= '\end{flushright}';
1606: } elsif ($align eq 'left') {
1607: $currentstring .= '\begin{flushleft}';
1608: $endstring = '\end{flushleft}';
1609: } else {
1610:
1611: }
1612: $currentstring .= "\n"; # For human readability.
1613: $endstring = "\n$endstring\n"; # For human readability
1614: push(@div_end_stack, $endstring);
1615: }
1616: return $currentstring;
1617: }
1618:
1619: sub end_div {
1620: my ($target,$token) = @_;
1621: my $currentstring = '';
1622: if ($target eq 'web' || $target eq 'webgrade') {
1623: $currentstring .= $token->[2];
1624: }
1625: if ($target eq 'tex') {
1626: my $endstring = pop @div_end_stack;
1627: $currentstring .= $endstring;
1628: }
1629: return $currentstring;
1630: }
1631: }
1632:
1633: #-- <a> tag (end tag required)
1634: sub start_a {
1635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1636: my $currentstring = '';
1637: if ($target eq 'web' || $target eq 'webgrade') {
1638: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1639: undef,1);
1640: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1641: if ($href =~ /\S/) {
1642: if ($href !~ m{^https?://}) {
1643: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1644: my $linkurl;
1645: if ($href =~ m{^/uploaded/}) {
1646: $linkurl = $href;
1647: } elsif ($href =~ m{^[^/]}) {
1648: my $path = $url;
1649: $path =~ s{[^/]*$}{};
1650: $linkurl = $path.$href;
1651: }
1652: if ($linkurl =~ m{^/uploaded/}) {
1653: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1654: if (&Apache::lonnet::is_on_map($url)) {
1655: &Apache::lonxml::extlink($linkurl);
1656: }
1657: }
1658: }
1659: }
1660: }
1661: }
1662: return $currentstring;
1663: }
1664:
1665: sub end_a {
1666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1667: my $currentstring = '';
1668: if ($target eq 'web' || $target eq 'webgrade') {
1669: $currentstring .= $token->[2];
1670: }
1671: if ($target eq 'tex') {
1672: my $href =
1673: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1674: my $name =
1675: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1676: my $uriprint =
1677: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1678: my $anchorprint =
1679: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1680: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1681: $href =~ s/([^\\])%/$1\\\%/g;
1682: # Substitute special symbols... and allow line breaks at each /
1683: #
1684: $href = &Apache::lonxml::latex_special_symbols($href);
1685: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1686: $currentstring .= ' ({\tt URI:'.$href.'})';
1687: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1688: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1689: } else {
1690: $currentstring.='';
1691: }
1692: }
1693: return $currentstring;
1694: }
1695:
1696: #-- <li> tag (end tag optional)
1697: sub start_li {
1698: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1699: my $currentstring = '';
1700: if ($target eq 'web' || $target eq 'webgrade') {
1701: $currentstring = $token->[4];
1702: } elsif ($target eq 'tex') {
1703: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1704: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1705: #FIXME need to support types i and I
1706: if ($type=~/disc/) {
1707: $currentstring .= ' \item[$\bullet$] ';
1708: } elsif ($type=~/circle/) {
1709: $currentstring .= ' \item[$\circ$] ';
1710: } elsif ($type=~/square/) {
1711: $currentstring .= ' \item[$\diamond$] ';
1712: } elsif ($type eq '1') {
1713: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1714: } elsif ($type eq 'A') {
1715: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1716: } elsif ($type eq 'a') {
1717: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1718: } elsif ($value ne '') {
1719: $currentstring .= ' \item['.$value.'] ';
1720: } else {
1721: $currentstring .= ' \item ';
1722: }
1723: $Apache::londefdef::list_index++;
1724: }
1725: return $currentstring;
1726: }
1727:
1728: sub end_li {
1729: my ($target,$token) = @_;
1730: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1731: if ($target eq 'web' || $target eq 'webgrade') {
1732: $currentstring .= $token->[2];
1733: }
1734: return $currentstring;
1735: }
1736:
1737: #-- <u> tag (end tag required)
1738: sub start_u {
1739: my ($target,$token) = @_;
1740: my $currentstring = '';
1741: if ($target eq 'web' || $target eq 'webgrade') {
1742: $currentstring .= $token->[4];
1743: } elsif ($target eq 'tex') {
1744: &Apache::lonxml::startredirection();
1745: }
1746: return $currentstring;
1747: }
1748:
1749: sub end_u {
1750: my ($target,$token) = @_;
1751: my $currentstring = '';
1752: if ($target eq 'web' || $target eq 'webgrade') {
1753: $currentstring .= $token->[2];
1754: } elsif ($target eq 'tex') {
1755: $currentstring=&Apache::lonxml::endredirection();
1756: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1757: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1758: $currentstring=~s/(\S)\s*$/$1\}/;
1759: }
1760: return $currentstring;
1761: }
1762:
1763: #-- <ul> tag (end tag required)
1764: sub start_ul {
1765: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1766: my $currentstring = &end_p(); # Close off enclosing list.
1767: if ($target eq 'web' || $target eq 'webgrade') {
1768: $currentstring .= $token->[4];
1769: } elsif ($target eq 'tex') {
1770: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1771: $Apache::londefdef::list_index=0;
1772: if ($TeXtype eq 'disc') {
1773: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1774: '\renewcommand{\labelitemii}{$\bullet$}'.
1775: '\renewcommand{\labelitemiii}{$\bullet$}'.
1776: '\renewcommand{\labelitemiv}{$\bullet$}';
1777: } elsif ($TeXtype eq 'circle') {
1778: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1779: '\renewcommand{\labelitemii}{$\circ$}'.
1780: '\renewcommand{\labelitemiii}{$\circ$}'.
1781: '\renewcommand{\labelitemiv}{$\circ$}';
1782: } elsif ($TeXtype eq 'square') {
1783: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1784: '\renewcommand{\labelitemii}{$\diamond$}'.
1785: '\renewcommand{\labelitemiii}{$\diamond$}'.
1786: '\renewcommand{\labelitemiv}{$\diamond$}';
1787: }
1788: $currentstring .= '\strut \begin{itemize}';
1789: }
1790: return $currentstring;
1791: }
1792:
1793: sub end_ul {
1794: my ($target,$token) = @_;
1795: my $currentstring = '';
1796: if ($target eq 'web' || $target eq 'webgrade') {
1797: $currentstring = $token->[2];
1798: } elsif ($target eq 'tex') {
1799: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1800: '\renewcommand{\labelitemii}{$\bullet$}'.
1801: '\renewcommand{\labelitemiii}{$\bullet$}'.
1802: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1803: }
1804: return $currentstring;
1805: }
1806:
1807: #-- <menu> tag (end tag required)
1808: sub start_menu {
1809: my ($target,$token) = @_;
1810: my $currentstring = '';
1811: if ($target eq 'web' || $target eq 'webgrade') {
1812: $currentstring = $token->[4];
1813: } elsif ($target eq 'tex') {
1814: $currentstring = " \\begin{itemize} ";
1815: }
1816: return $currentstring;
1817: }
1818:
1819: sub end_menu {
1820: my ($target,$token) = @_;
1821: my $currentstring = '';
1822: if ($target eq 'web' || $target eq 'webgrade') {
1823: $currentstring = $token->[2];
1824: } elsif ($target eq 'tex') {
1825: $currentstring = " \\end{itemize}";
1826: }
1827: return $currentstring;
1828: }
1829:
1830: #-- <dir> tag (end tag required)
1831: sub start_dir {
1832: my ($target,$token) = @_;
1833: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1834: if ($target eq 'web' || $target eq 'webgrade') {
1835: $currentstring .= $token->[4];
1836: } elsif ($target eq 'tex') {
1837: $currentstring .= " \\begin{itemize} ";
1838: }
1839: return $currentstring;
1840: }
1841:
1842: sub end_dir {
1843: my ($target,$token) = @_;
1844: my $currentstring = '';
1845: if ($target eq 'web' || $target eq 'webgrade') {
1846: $currentstring = $token->[2];
1847: } elsif ($target eq 'tex') {
1848: $currentstring = " \\end{itemize}";
1849: }
1850: return $currentstring;
1851: }
1852:
1853: #-- <ol> tag (end tag required)
1854: sub start_ol {
1855: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1856: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1857: if ($target eq 'web' || $target eq 'webgrade') {
1858: $currentstring .= $token->[4];
1859: } elsif ($target eq 'tex') {
1860: $Apache::londefdef::list_index=0;
1861: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1862: if ($type eq '1') {
1863: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1864: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1865: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1866: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1867: } elsif ($type eq 'A') {
1868: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1869: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1870: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1871: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1872: } elsif ($type eq 'a') {
1873: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1874: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1875: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1876: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1877: } elsif ($type eq 'i') {
1878: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1879: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1880: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1881: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1882: } elsif ($type eq 'I') {
1883: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1884: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1885: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1886: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1887: }
1888: $currentstring .= '\strut \begin{enumerate}';
1889: }
1890: return $currentstring;
1891: }
1892:
1893: sub end_ol {
1894: my ($target,$token) = @_;
1895: my $currentstring = '';
1896: if ($target eq 'web' || $target eq 'webgrade') {
1897: $currentstring = $token->[2];
1898: } elsif ($target eq 'tex') {
1899: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1900: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1901: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1902: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1903: }
1904: return $currentstring;
1905: }
1906:
1907: #-- <dl> tag (end tag required)
1908: sub start_dl {
1909: my ($target,$token) = @_;
1910: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1911: if ($target eq 'web' || $target eq 'webgrade') {
1912: $currentstring .= $token->[4];
1913: } elsif ($target eq 'tex') {
1914: $currentstring .= '\begin{description}';
1915: $Apache::londefdef::DL++;
1916: push(@Apache::londefdef::description,[]);
1917: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1918: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1919: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1920: }
1921: return $currentstring;
1922: }
1923:
1924: sub end_dl {
1925: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1926: my $currentstring = '';
1927: if ($target eq 'web' || $target eq 'webgrade') {
1928: $currentstring = $token->[2];
1929: } elsif ($target eq 'tex') {
1930: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1931: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1932: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1933: $currentstring.=' '.$element.' ';
1934: }
1935: pop(@Apache::londefdef::description);
1936: $currentstring.='\end{description}';
1937: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1938: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1939: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1940: $Apache::londefdef::DL--;
1941: }
1942: return $currentstring;
1943: }
1944:
1945: #-- <dt> tag (end tag optional)
1946: sub start_dt {
1947: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1948: my $currentstring='';
1949: if ($target eq 'web' || $target eq 'webgrade') {
1950: $currentstring = $token->[4];
1951: } elsif ($target eq 'tex') {
1952: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1953: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1954: &Apache::lonxml::startredirection();
1955: $Apache::londefdef::DT[-1]++;
1956: $Apache::londefdef::seenDT[-1]=1;
1957: }
1958: return $currentstring;
1959: }
1960:
1961: sub end_dt {
1962: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1963: my $currentstring = '';
1964: if ($target eq 'web' || $target eq 'webgrade') {
1965: $currentstring = $token->[2];
1966: } elsif ($target eq 'tex') {
1967: if ($Apache::londefdef::DT[-1]) {
1968: my $data=&item_cleanup();
1969: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1970: $Apache::londefdef::DT[-1]--;
1971: }
1972: }
1973: return $currentstring;
1974: }
1975:
1976: sub item_cleanup {
1977: my $item=&Apache::lonxml::endredirection();
1978: $item=~s/\\begin{center}//g;
1979: $item=~s/\\end{center}//g;
1980: return $item;
1981: }
1982:
1983: #-- <dd> tag (end tag optional)
1984: sub start_dd {
1985: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1986: my $currentstring = '';
1987: if ($target eq 'web' || $target eq 'webgrade') {
1988: $currentstring = $token->[4];
1989: } elsif ($target eq 'tex') {
1990: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1991: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1992: if (!$Apache::londefdef::seenDT[-1]) {
1993: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1994: }
1995: push(@{$Apache::londefdef::description[-1]},'');
1996: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1997: $Apache::londefdef::DD[-1]++;
1998: &Apache::lonxml::startredirection();
1999: }
2000: return $currentstring;
2001: }
2002:
2003: sub end_dd {
2004: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2005: my $currentstring = '';
2006: if ($target eq 'web' || $target eq 'webgrade') {
2007: $currentstring = $token->[2];
2008: } elsif ($target eq 'tex') {
2009: $Apache::londefdef::description[-1]->[-1].=
2010: &Apache::lonxml::endredirection().' \vskip 0mm ';
2011: $Apache::londefdef::DD[-1]--;
2012: }
2013: return $currentstring;
2014: }
2015:
2016: #-- <table> tag (end tag required)
2017: # <table> also ends any prior <p> that is not closed.
2018: # but, unless I allow <p>'s to nest, that's the
2019: # only way I could think of to allow <p> in
2020: # <tr> <th> bodies
2021: #
2022: #list of supported attributes: border,width,TeXwidth,TeXtheme
2023: # align
2024: sub start_table {
2025: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2026: my $textwidth = '';
2027: my $currentstring = &end_p();
2028: if ($target eq 'web' || $target eq 'webgrade') {
2029: $currentstring .= $token->[4];
2030: } elsif ($target eq 'tex') {
2031: &disable_para(); # Can't have paras in a table.
2032:
2033:
2034: # New table code:
2035:
2036: # Get the parameters that we can do something about:
2037:
2038: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2039: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2040: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2041: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2042:
2043: # The only thing that needs any figuring out is the width.. and then only if it is
2044: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2045: #
2046:
2047: my $table = new Apache::lontable();
2048: if ($border ne '') {
2049: $table->table_border(1);
2050: $table->cell_border(1);
2051: }
2052: if ($theme ne '') {
2053: $table->theme($theme);
2054: }
2055: if ($align ne '') {
2056: $table->alignment($align);
2057: }
2058:
2059: # Missing width is most of page width
2060:
2061: if ($width eq "") {
2062: $width = '70%';
2063: }
2064:
2065: # If a percentage, need to calculate what this means in terms of
2066: # page width:
2067:
2068: if ($width =~ /%$/) {
2069: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2070: $width =~ s/%//;
2071: $width = $width * $textwidth / 100.0;
2072: $width .= " mm";
2073: $table->width($width);
2074: }
2075:
2076: push(@Apache::londefdef::table, $table);
2077: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2078:
2079: #--------------------------------------------------------
2080: # Old table code here.
2081: #--------------------------------------------------------
2082:
2083:
2084: if (0) {
2085: push(@Apache::londefdef::table, {});
2086: $Apache::londefdef::table[-1]{'row_number'} = -1;
2087: #maximum table's width (default coincides with text line length)
2088: if ($#Apache::londefdef::table==0) {
2089: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2090: $textwidth=~/(\d+\.?\d*)/;
2091: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2092: } else {
2093: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2094: #the maximum width of nested table is determined by LATeX width of parent cell
2095: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2096: } else {
2097: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2098: $textwidth=$Apache::londefdef::table[-2]{'width'};
2099: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2100: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2101: }
2102: }
2103: }
2104:
2105: # width either comes forced from the TeXwidth or the width parameters.
2106: # in either case it can be a percentage or absolute width.
2107: # in the width case we ignore absolute width
2108: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2109: if (!defined($TeXwidth)) {
2110: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2111: $safeeval,undef,1);
2112: if ($htmlwidth =~ /%/) {
2113: $TeXwidth = $htmlwidth;
2114: } else {
2115: $TeXwidth = $textwidth;
2116: }
2117: }
2118: # if the width is specified as a % it is converted to an absolute width.
2119: # otherwise.. just plugged right in the hash
2120:
2121: if ($TeXwidth=~/%/) {
2122: $TeXwidth=~/(\d+)/;
2123: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2124: } else {
2125: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2126: }
2127: # In the end, however the table width cannot be wider than $textwidth...
2128:
2129: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2130: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2131: }
2132: #table's border
2133: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2134: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2135: unless (defined $border) { $border = 0; }
2136: if ($border) {
2137: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2138: $Apache::londefdef::table[-1]{'vinc'} = '&';
2139: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2140: } else {
2141: $Apache::londefdef::table[-1]{'hinc'} = '';
2142: $Apache::londefdef::table[-1]{'vinc'} = '&';
2143: $Apache::londefdef::table[-1]{'vvinc'} = '';
2144: }
2145: if ($#Apache::londefdef::table==0) {
2146: # Note that \newline seems to destroy the alignment envs.
2147: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2148: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2149: }
2150: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2151: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2152: $Apache::londefdef::table[-1]{'objectlen'}=[];
2153: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2154: $Apache::londefdef::table[-1]{'maxlen'}=[];
2155: $Apache::londefdef::table[-1]{'minlen'}=[];
2156: $Apache::londefdef::table[-1]{'content'}=[];
2157: $Apache::londefdef::table[-1]{'align'}=[];
2158: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2159: }
2160:
2161: }
2162: return $currentstring;
2163: }
2164:
2165: sub end_table {
2166: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2167: my $currentstring = '';
2168: if ($target eq 'web' || $target eq 'webgrade') {
2169: $currentstring = $token->[2];
2170: } elsif ($target eq 'tex') {
2171:
2172:
2173: # New table code:
2174:
2175: my $table = pop(@Apache::londefdef::table);
2176: my $t = $table->generate();
2177: $currentstring = $t->generate_string();
2178: &enable_para();
2179: #--------------------------------------------------------------
2180: # Old table code:
2181: #--------------------------------------------------------------
2182:
2183: if (0) {
2184:
2185: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2186: my $inmemory = '';
2187: my $output = '';
2188: my $WARNING='';
2189: #width of columns from TeXwidth attributes
2190:
2191: # Protect against unbalanced </table> tag.
2192:
2193: if (scalar(@Apache::londefdef::table) > 0) {
2194:
2195: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2196: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2197: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2198: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2199: }
2200: }
2201: }
2202: #free space and number of empty columns
2203: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2204: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2205: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2206: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2207: $empty_columns++;
2208: } else {
2209: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2210: }
2211: }
2212:
2213: #boundaries for contents columns
2214: my @min_len=();#columns can not be narrower
2215: my @max_len=();#maximum length of column
2216: my $avg_max;
2217: my $avg_min;
2218: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2219: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2220: my ($localmin,$localmax)=(0,0);
2221: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2222: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2223: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2224: }
2225: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2226: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2227: }
2228: }
2229: push @min_len, $localmin;
2230: push @max_len, $localmax;
2231: $avg_max = $localmax + $avg_max;
2232: $avg_min = $localmin + $avg_min;
2233: }
2234: # Does not really matter what the average max/min are if there are no cols.
2235: # and this prevents div 0 in that case.
2236:
2237: if ($counter_cols != 0) {
2238: $avg_max = $avg_max/$counter_cols;
2239: $avg_min = $avg_min/$counter_cols;
2240: }
2241:
2242:
2243: # I don't think the below is needed.. but just in case:
2244:
2245: if ($avg_min > $avg_max) {
2246: my $temp = $avg_min;
2247: $avg_min = $avg_max;
2248: $avg_max = $temp;
2249: }
2250:
2251:
2252: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2253: my $localmin=0,;
2254: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2255: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2256: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2257: }
2258: }
2259: if ($max_len[$jn]<$localmin) {
2260: $max_len[$jn]=$localmin;
2261: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2262: }#object size is bigger
2263: if ($min_len[$jn]<$localmin) {
2264: $min_len[$jn]=$localmin;
2265: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2266: }#object size is bigger
2267: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2268: $min_len[$jn]=0;
2269: $max_len[$jn]=0;
2270: }
2271: # Spans seem to be really bothered by max/min = 0. So if we have one
2272: # make it an average joe max/min.
2273:
2274: if ($max_len[$jn] == 0) {
2275: $max_len[$jn] = $avg_max;
2276: }
2277: if ($min_len[$jn] == 0) {
2278: $min_len[$jn] = $avg_min;
2279: }
2280:
2281: }
2282: #final adjustment of column width
2283: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2284: my @adjust=();
2285: #step 1. adjustment by maximum value
2286: my $space_needed=0;
2287: for (my $jn=0;$jn<=$#max_len;$jn++) {
2288: $space_needed=$space_needed+$max_len[$jn];
2289: }
2290: if ($space_needed<=$available_space) {
2291:
2292: for (my $jn=0;$jn<=$#max_len;$jn++) {
2293: if ($fwidth[$jn]==0) {
2294: $fwidth[$jn]=$max_len[$jn];
2295: }
2296: }
2297: } else {
2298: #step 2. adjustment by minimum value (estimation)
2299: $space_needed=0;
2300: for (my $jn=0;$jn<=$#min_len;$jn++) {
2301: $space_needed+=$min_len[$jn];
2302: }
2303: if ($space_needed>$available_space) {
2304: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2305: for (my $jn=0;$jn<=$#max_len;$jn++) {
2306: if ($fwidth[$jn]==0) {
2307: $fwidth[$jn]=$min_len[$jn];
2308: }
2309: }
2310: #check if we have objects which can be scaled
2311: my $how_many_to_scale=0;
2312: my @to_scale=();
2313: for (my $jn=0;$jn<=$#max_len;$jn++) {
2314: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2315: $how_many_to_scale++;
2316: push @to_scale, $jn;
2317: }
2318: }
2319: if ($how_many_to_scale>0) {
2320: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2321: foreach my $jn (@to_scale) {
2322: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2323: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2324: if ($1 ne '') {
2325: my $current_length=&recalc($1);
2326: $current_length=~/(\d+\.?\d*)/;
2327: $current_length=$current_length-$space_to_adjust;
2328: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2329: }
2330: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2331: if ($1 ne '') {
2332: my $current_length=$1;
2333: $current_length=$current_length-$space_to_adjust;
2334: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2335: }
2336: }
2337: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2338: }
2339: }
2340: } else {
2341: #step 3. adjustment over minimal + corrections
2342: my $enlarge_coef=$available_space/$space_needed;
2343: my $acsessive=0;
2344: for (my $jn=0;$jn<=$#min_len;$jn++) {
2345: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2346: if ($adjust[$jn]>$max_len[$jn]) {
2347: $fwidth[$jn]=$max_len[$jn];
2348: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2349: $adjust[$jn]=0;
2350:
2351: }
2352: }
2353: if ($acsessive>0) {
2354: #we have an excess of space and can redistribute it
2355: my $notempty_columns=0;
2356: for (my $jn=0;$jn<=$#min_len;$jn++) {
2357: if ($adjust[$jn]!=0) {
2358: $notempty_columns++;
2359: }
2360: }
2361: my $per_column=$acsessive/$notempty_columns;
2362: for (my $jn=0;$jn<=$#min_len;$jn++) {
2363: if ($adjust[$jn]!=0) {
2364: $adjust[$jn]+=$per_column;
2365: $fwidth[$jn]=$adjust[$jn];
2366: }
2367: }
2368: } else {
2369: for (my $jn=0;$jn<=$#min_len;$jn++) {
2370: $fwidth[$jn]=$adjust[$jn];
2371: }
2372: }
2373: }
2374: }
2375: # use all available width or specified width as if not specified,
2376: # the specified width gets defaulted to the available width.
2377:
2378: my $current=0;
2379: for (my $i=0;$i<=$#fwidth;$i++) {
2380: $current+=$fwidth[$i];
2381: }
2382: if ($current == 0) {
2383: $current = $Apache::londefdef::table[-1]{'width'};
2384: }
2385: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2386: for (my $i=0;$i<=$#fwidth;$i++) {
2387: $fwidth[$i]*=$coef;
2388: }
2389: #removing of empty columns if allowed
2390: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2391: if ($permission eq 'yes') {
2392: my @cleaned_table=();
2393: my @cleaned_header=();
2394: my $colind=0;
2395: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2396: if ($fwidth[$jn]!=0) {
2397: #we need to copy column
2398: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2399: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2400: $cleaned_header[$colind]=$fwidth[$jn];
2401: }
2402: $colind++;
2403: }
2404: }
2405: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2406: @fwidth=@cleaned_header;
2407: }
2408:
2409:
2410: #construct header of the table
2411: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2412: for (my $in=0;$in<=$#fwidth;$in++) {
2413: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2414: }
2415: $header_of_table .= '}';
2416:
2417: #fill the table
2418: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2419: my $have_rowspan = 0;
2420: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2421:
2422: #-----------------------------------------------------------
2423: # I think this order of doing things will ensure that
2424: # single rowspan, columspan and combined row/colspans will
2425: # work correctly. LaTeX is delicate here.
2426: # RF.
2427:
2428: # Start a rowspan if necessary:
2429:
2430: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2431: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2432: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2433: #
2434: # Do the appropriate magic if this has a colspan
2435: #
2436:
2437: my $border_char = "";
2438: if ($border) {
2439: $border_char = "|";
2440: }
2441: my $spanwidth = 0;
2442: if ($colspan > 1) {
2443: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2444: $spanwidth += $fwidth[$spancol];
2445: }
2446: $output .= '\multicolumn{'.
2447: $colspan
2448: ."}";
2449: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2450: $output .= '{'.$border_char.'c'.$border_char.'}{';
2451: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2452: $output .= '{'.$border_char.'r'.$border_char.'}{';
2453: }
2454: else {
2455: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2456: }
2457:
2458: } else {
2459: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2460: }
2461:
2462: # Rowspan... if colspan is 1, and there's an alignment we'll need
2463: # to kick in a multicolumn in order to get the alignment spec.
2464: # this must precede the multirow or LaTex gets quite upset.
2465: # Naturally if colspan > 1 we've already done that above ^
2466: #
2467: my $multirow_aligned = 0;
2468: if ($rowspan > 1) {
2469: if ($colspan == 1) {
2470: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2471: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2472: $multirow_aligned = 1;
2473: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2474: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2475: $multirow_aligned = 1;
2476: }
2477: }
2478: $have_rowspan++;
2479: if ($multirow_aligned) {
2480: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2481: } else {
2482: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2483: }
2484:
2485: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2486: s{^\s*\\par\s*}{};
2487: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2488: s{\s*\\vskip\s*0pt\s*$}{};
2489:
2490: #
2491: # If we did not throw in a multicolumn to align, then add
2492: # an extra {
2493: # so we close correctly without having to keep additional state
2494: # around
2495: #
2496: if (!$multirow_aligned) {
2497: $output .= '{';
2498: }
2499: }
2500: if (($rowspan eq '^') || ($rowspan eq '_')) {
2501: $have_rowspan++;
2502: }
2503: #--------------------------------------------------------------
2504:
2505:
2506: # For right and center alignment of single cells.
2507: # we are going to use a multicolumn with a span of 1 to specify alignment.
2508: #
2509: if ($colspan == 1 && $rowspan == 1) {
2510: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2511: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2512: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2513: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2514: }
2515: }
2516:
2517: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2518:
2519: if (($colspan == 1 && $rowspan == 1) &&
2520: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2521: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2522: $output .= '}';
2523: }
2524:
2525: # Close off any open multirow:
2526:
2527: if ($rowspan > 1) {
2528: $output .= '}}';
2529: }
2530: # Close off the colspan...
2531: #
2532: if ($colspan > 1) {
2533: $output .= '}';
2534: $jn += $colspan-1; # Adjust for number of rows really left.
2535: }
2536: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2537: }
2538: # If have_rowspan > 0, and borders are on, then
2539: # we need to do more than put an \hline at the bottom of row.
2540: # we need to do the appropriate \cline to ensure that
2541: # the spanned rows don't have \hlines through them.
2542:
2543: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2544: $output .= ' \\\\ ';
2545: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2546: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2547: if ($rowspan ne "^") {
2548: if (($rowspan <= 1) || ($rowspan eq '_')) {
2549: my $column = $jn+1;
2550: $output .= '\cline{'.$column.'-'.$column.'} ';
2551: }
2552: }
2553: }
2554:
2555: } else {
2556: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2557: }
2558: }
2559: # Note that \newline destroys alignment env's produced by e.g. <div>
2560: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2561: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2562: if ($#Apache::londefdef::table > 0) {
2563: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2564: # Figure out max/and min width by summing us and then
2565: # apply that to the current column of the table we nest in
2566: # if it's larger than the current width or the current width
2567: # is undefined.
2568: #
2569: my $min_nested_width = 0;
2570: my $max_nested_width = 0;
2571: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2572: $min_nested_width += $min_len[$col];
2573: $max_nested_width += $max_len[$col];
2574:
2575: }
2576: # Fudge in an extra 5 mm for borders etc:
2577:
2578: $min_nested_width += 5;
2579: $max_nested_width += 5;
2580:
2581: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2582: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2583: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2584: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2585: }
2586: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2587: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2588: }
2589:
2590: pop @Apache::londefdef::table;
2591: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2592: } else {
2593: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2594: pop @Apache::londefdef::table;
2595: undef @Apache::londefdef::table;
2596: }
2597: }
2598: &enable_para();
2599: }
2600: }
2601: return $currentstring;
2602: }
2603:
2604: #-- <tr> tag (end tag optional)
2605: sub start_tr {
2606: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2607: my $currentstring = '';
2608: if ($target eq 'web' || $target eq 'webgrade') {
2609: $currentstring = $token->[4];
2610: } elsif ($target eq 'tex') {
2611:
2612: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2613: $Apache::londefdef::table[-1]->start_row();
2614:
2615: if ($align ne '') {
2616: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2617: }
2618:
2619: #---------------------------------------------------------------
2620: # Old table code.
2621: #---------------------------------------------------------------
2622:
2623: if (0) {
2624: $Apache::londefdef::table[-1]{'row_number'}++;
2625: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2626: if ($alignchar ne '') {
2627: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2628: } else {
2629: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2630: }
2631: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2632: #
2633: # Need to save the number of table columns to preserve the max # columns.
2634: #
2635: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2636: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2637: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2638: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2639: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2640: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2641: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2642: }
2643: }
2644: return $currentstring;
2645: }
2646:
2647: sub end_tr {
2648: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2649: my $currentstring = &end_p(); # Close any pending <p> in the row.
2650: if ($target eq 'web' || $target eq 'webgrade') {
2651: $currentstring .= $token->[2];
2652: } elsif ($target eq 'tex') {
2653:
2654: # In case the user is missing a </td> or </th> tag:
2655:
2656: if ($Apache::londefdef::TD_redirection) {
2657: &end_td_tex($parstack,$parser,$safeeval);
2658: }
2659: $Apache::londefdef::table[-1]->end_row();
2660:
2661: #-----------------------------------------------
2662: # Old table code
2663: #-----------------------------------------------
2664:
2665: if (0) {
2666: if ($Apache::londefdef::TD_redirection) {
2667: &end_td_tex($parstack,$parser,$safeeval);
2668: }
2669: # Counter columns must be the maximum number of columns seen
2670: # in the table so far so:
2671: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2672: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2673: }
2674: }
2675:
2676:
2677: }
2678: return $currentstring;
2679: }
2680:
2681: #-- <td> tag (end tag optional)
2682: sub start_td {
2683: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2684: my $currentstring = '';
2685: if ($target eq 'web' || $target eq 'webgrade') {
2686: $currentstring = $token->[4];
2687: } elsif ($target eq 'tex') {
2688: $Apache::londefdef::TD_redirection = 1;
2689: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2690: }
2691: return $currentstring;
2692: }
2693:
2694: sub tag_check {
2695: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2696: my @ar=@$parstack;
2697: for (my $i=$#ar-1;$i>=0;$i--) {
2698: if (lc($$tagstack[$i]) eq $good_tag) {
2699: &start_td_tex($parstack,$parser,$safeeval);
2700: last;
2701: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2702: splice @ar, $i+1;
2703: &end_td_tex(\@ar,$parser,$safeeval);
2704: &start_td_tex($parstack,$parser,$safeeval);
2705: last;
2706: }
2707: }
2708: return '';
2709: }
2710:
2711: #
2712: # Factor out cell configuration hash generation:
2713: #
2714:
2715: sub cell_config_hash {
2716: my ($align, $rowspan, $colspan) = @_;
2717: my %config;
2718: if ($align ne '') {
2719: $config{'halign'} = $align;
2720: }
2721: if ($colspan ne "") {
2722: $config{'colspan'} = $colspan;
2723: }
2724: if ($rowspan ne '') {
2725: $config{'rowspan'} = $rowspan;
2726: }
2727: return \%config;
2728: }
2729:
2730: sub start_td_tex {
2731: my ($parstack,$parser,$safeeval) = @_;
2732:
2733: # At this stage, an empty cell is created with the
2734: # appropriate rowspan/colspan and alignment
2735: # attributes, but empty of text. end_td_tex will
2736: # fetch the contents from the recursive parse and
2737: # fill the cell with them:
2738: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2739: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2740: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2741:
2742: my $config = &cell_config_hash($align, $rowspan, $colspan);
2743:
2744: my $table = $Apache::londefdef::table[-1];
2745: $table->add_cell('', $config);
2746:
2747:
2748: #------------------------------------------------
2749: # Old table code.
2750: #------------------------------------------------
2751:
2752: if (0) {
2753:
2754: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2755: if ($alignchar eq '') {
2756: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2757: }
2758: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2759: $Apache::londefdef::table[-1]{'counter_columns'}++;
2760: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2761: if (defined $TeXwidth) {
2762: my $current_length=&recalc($TeXwidth);
2763: $current_length=~/(\d+\.?\d*)/;
2764: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2765: }
2766: }
2767: &Apache::lonxml::startredirection();
2768: return '';
2769: }
2770:
2771: sub end_td_tex {
2772:
2773: my $text = &Apache::lonxml::endredirection();
2774: my $table = $Apache::londefdef::table[-1];
2775: $table->append_cell_text($text);
2776:
2777: #-------------------------------------------------
2778: # Old table code
2779: #-------------------------------------------------
2780:
2781: if (0) {
2782: my ($parstack,$parser,$safeeval) = @_;
2783: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2784: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2785: my $data = &Apache::lonxml::endredirection();
2786:
2787: # The rowspan array of the table indicates which cells are part of a span.
2788: # n indicates the start of a span set of n rows.
2789: # ^ indicates a cell that continues a span set.
2790: # _ indicates the cell is at the bottom of a span set.
2791: # If this and subsequent cells are part of a rowspan, we must
2792: # push along the row until we find one that is not.
2793:
2794: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2795: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2796: # Part of a span.
2797: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2798: $current_column++;
2799: }
2800: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2801:
2802:
2803: # Get the column and row spans.
2804: # Colspan can be done via \multicolumn if I can figure out the data structs.
2805:
2806: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2807: if (!$colspan) {
2808: $colspan = 1;
2809: }
2810:
2811: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2812: if (!$rowspan) {
2813: $rowspan = 1;
2814: }
2815:
2816:
2817:
2818: for (my $c = 0; $c < $colspan; $c++) {
2819: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2820: for (my $i = 1; $i < $rowspan; $i++) {
2821: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2822: if ($i == ($rowspan-1)) {
2823: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2824: }
2825: }
2826: }
2827:
2828: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2829: if (defined $TeXwidth) {
2830: for (my $c = 0; $c < $colspan; $c++) {
2831: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2832: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2833: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2834: }
2835: } else {
2836: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2837: my $garbage_data=$data;
2838: my $fwidth=0;
2839: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2840: my $current_length=&recalc($1);
2841: $current_length=~/(\d+\.?\d*)/;
2842: if ($fwidth<$1) {$fwidth=$1;}
2843: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2844: }
2845: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2846: my $current_length=$1;
2847: if ($fwidth<$current_length) {$fwidth=$current_length;}
2848: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2849: }
2850: for (my $c = 0; $c < $colspan; $c++) {
2851: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2852: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2853: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2854: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2855: }
2856: } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
2857: my $garbage_data=$data;
2858: my $fwidth=0;
2859: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2860: my $current_length=&recalc($1);
2861: $current_length=~/(\d+\.?\d*)/;
2862: if ($fwidth<$1) {$fwidth=$1;}
2863: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2864: }
2865: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2866: my $current_length=&recalc($1);
2867: $current_length=~/(\d+\.?\d*)/;
2868: if ($fwidth<$1) {$fwidth=$1;}
2869: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2870: }
2871: for (my $c = 0; $c < $colspan; $c++) {
2872: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2873: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2874: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2875: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2876: }
2877: $data=~s/\\\\\s*$//;
2878: } else {
2879: $data=~s/^\s+(\S.*)/$1/;
2880: $data=~s/(.*\S)\s+$/$1/;
2881: $data=~s/(\s)+/$1/;
2882: my ($current_length,$min_length)=(0,0);
2883: if ($data=~/\\vskip/) {
2884: my $newdata=$data;
2885: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2886: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2887: foreach my $elementdata (@newdata) {
2888: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2889: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2890: my @words=split(/ /,$elementdata);
2891: foreach my $word (@words) {
2892: my $lengthword=2.5*&LATEX_length($word);
2893: if ($min_length<$lengthword) {$min_length=$lengthword;}
2894: }
2895: }
2896: } else {
2897: $current_length=2.5*&LATEX_length($data);
2898: my @words=split(/ /,$data);
2899: foreach my $word (@words) {
2900: my $lengthword=2*&LATEX_length($word);
2901: if ($min_length<$lengthword) {$min_length=$lengthword;}
2902: }
2903: }
2904: for (my $c = 0; $c < $colspan; $c++) {
2905: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2906: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2907: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2908: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2909: }
2910: }
2911: }
2912: # Substitute all of the tables nested in this cell in their appropriate places.
2913:
2914:
2915: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2916: for (my $in=0; $in<=$nested_count; $in++) {
2917: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2918: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2919: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2920: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2921:
2922: }
2923: # Should be be killing off the 'include' elements as they're used up?
2924:
2925: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2926:
2927:
2928:
2929:
2930: # the colspan array will indicate how many columns will be spanned by this
2931: # cell..this requires that counter_columns also be adjusted accordingly
2932: # so that the next bunch of text goes in the right cell. Note that since
2933: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2934: #
2935:
2936: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2937: for (my $i = 0; $i < ($colspan -1); $i++) {
2938: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2939: }
2940: for (my $r = 0; $r < $rowspan; $r++) {
2941: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2942: # Put empty text in spanned cols.
2943:
2944: }
2945:
2946: }
2947:
2948: return '';
2949: }
2950:
2951: sub end_td {
2952: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2953: my $currentstring = '';
2954: if ($target eq 'web' || $target eq 'webgrade') {
2955: $currentstring = $token->[2];
2956: } elsif ($target eq 'tex') {
2957: $Apache::londefdef::TD_redirection =0;
2958: &end_td_tex($parstack,$parser,$safeeval);
2959: }
2960: return $currentstring;
2961: }
2962:
2963: #-- <th> tag (end tag optional)
2964: sub start_th {
2965: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2966: my $currentstring = '';
2967: if ($target eq 'web' || $target eq 'webgrade') {
2968: $currentstring = $token->[4];
2969: } elsif ($target eq 'tex') {
2970: $Apache::londefdef::TD_redirection = 1;
2971: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2972: }
2973: return $currentstring;
2974: }
2975:
2976: sub tagg_check {
2977: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2978: my @ar=@$parstack;
2979: for (my $i=$#ar-1;$i>=0;$i--) {
2980: if (lc($$tagstack[$i]) eq $good_tag) {
2981: &start_th_tex($parstack,$parser,$safeeval);
2982: last;
2983: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2984: splice @ar, $i+1;
2985: &end_th_tex(\@ar,$parser,$safeeval);
2986: &start_th_tex($parstack,$parser,$safeeval);
2987: last;
2988: }
2989: }
2990: return '';
2991: }
2992:
2993: sub start_th_tex {
2994: my ($parstack,$parser,$safeeval) = @_;
2995:
2996: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2997: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2998: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2999:
3000: my $config = cell_config_hash($alignment, $rowspan, $colspan);
3001: my $table = $Apache::londefdef::table[-1];
3002: $table->add_cell('\textbf{', $config);
3003:
3004: #-------------------------------------------------------------------------------------
3005: #
3006: # Old table code.
3007: #
3008: #--------------------------------------------------------------------------------------
3009:
3010: if (0) {
3011:
3012:
3013: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
3014: if ($alignchar eq '') {
3015: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
3016: }
3017: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
3018: $Apache::londefdef::table[-1]{'counter_columns'}++;
3019: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3020: if (defined $TeXwidth) {
3021: my $current_length=&recalc($TeXwidth);
3022: $current_length=~/(\d+\.?\d*)/;
3023: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
3024: }
3025: }
3026:
3027: # Accept xml until the </th> tag.
3028:
3029: &Apache::lonxml::startredirection();
3030: return '';
3031: }
3032:
3033: sub end_th_tex {
3034: my ($parstack,$parser,$safeeval) = @_;
3035:
3036: my $table = $Apache::londefdef::table[-1];
3037: my $text = &Apache::lonxml::endredirection();
3038: $table->append_cell_text($text.'}');
3039:
3040: #-----------------------------------------------------------------------------
3041: # Old table code:
3042: #-----------------------------------------------------------------------------
3043:
3044: if (0) {
3045: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3046: my $data=&Apache::lonxml::endredirection();
3047: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3048: if (defined $TeXwidth) {
3049: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3050: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3051: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3052: } else {
3053: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3054: my $garbage_data=$data;
3055: my $fwidth=0;
3056: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3057: my $current_length=&recalc($1);
3058: $current_length=~/(\d+\.?\d*)/;
3059: if ($fwidth<$1) {$fwidth=$1;}
3060: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3061: }
3062: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3063: my $current_length=$1;
3064: if ($fwidth<$current_length) {$fwidth=$current_length;}
3065: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3066: }
3067: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3068: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3069: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3070: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3071: } else {
3072: $data=~s/^\s+(\S.*)/$1/;
3073: $data=~s/(.*\S)\s+$/$1/;
3074: $data=~s/(\s)+/$1/;
3075: my ($current_length,$min_length)=(0,0);
3076: if ($data=~/\\vskip/) {
3077: my $newdata=$data;
3078: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3079: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3080: foreach my $elementdata (@newdata) {
3081: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3082: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3083: my @words=split(/ /,$elementdata);
3084: foreach my $word (@words) {
3085: my $lengthword=2.5*&LATEX_length($word);
3086: if ($min_length<$lengthword) {$min_length=$lengthword;}
3087: }
3088: }
3089: } else {
3090: $current_length=2.5*&LATEX_length($data);
3091: my @words=split(/ /,$data);
3092: foreach my $word (@words) {
3093: my $lengthword=2*&LATEX_length($word);
3094: if ($min_length<$lengthword) {$min_length=$lengthword;}
3095: }
3096: }
3097: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3098: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3099: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3100: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3101: }
3102: }
3103: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3104: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3105: }
3106: #make data bold
3107: $data='\textbf{'.$data.'}';
3108: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3109: }
3110: return'';
3111: }
3112:
3113: sub end_th {
3114: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3115: my $currentstring = &end_p(); # Close any open <p> in the row.
3116: if ($target eq 'web' || $target eq 'webgrade') {
3117: $currentstring .= $token->[2];
3118: } elsif ($target eq 'tex') {
3119: $Apache::londefdef::TD_redirection =0;
3120: &end_th_tex($parstack,$parser,$safeeval);
3121: }
3122: return $currentstring;
3123: }
3124:
3125: #-- <img> tag (end tag forbidden)
3126: #
3127: # Render the <IMG> tag.
3128: # <IMG> has the following attributes (in addition to the
3129: # standard HTML ones:
3130: # TeXwrap - Governs how the tex target will try to wrap text around
3131: # horizontally aligned images.
3132: # TeXwidth - The width of the image when rendered for print (mm).
3133: # TeXheight - The height of the image when rendered for print (mm)
3134: # (Note there seems to also be support for this as a % of page size)
3135: #
3136: sub start_img {
3137: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3138: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3139: undef,1);
3140: if (! $src &&
3141: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3142: ) {
3143: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3144: return '';
3145: }
3146: &Apache::lonxml::extlink($src);
3147: my $currentstring = '';
3148: my $scaling = .3;
3149:
3150: # Render unto browsers that which are the browser's...
3151:
3152: if ($target eq 'web' || $target eq 'webgrade') {
3153: if ($env{'browser.imagesuppress'} ne 'on') {
3154: my $enc = ('yes' eq
3155: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3156: $safeeval)));
3157: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3158: $enc);
3159: } else {
3160: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3161: undef,1);
3162: if (!$alttag) {
3163: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3164: $src);
3165: }
3166: $currentstring.='[IMAGE: '.$alttag.']';
3167: }
3168:
3169: # and render unto TeX that which is LaTeX
3170:
3171: } elsif ($target eq 'tex') {
3172: #
3173: # The alignment will require some superstructure to be put around
3174: # the \includegraphics stuff. At present we can only partially
3175: # simulate the alignments offered by html.
3176: #
3177: #
3178: my $align = lc(&Apache::lonxml::get_param('align',
3179: $parstack,
3180: $safeeval,
3181: undef,1));
3182: if(!$align) {
3183: $align = "bottom"; # This is html's default so it's ours too.
3184: }
3185: #
3186: &Apache::lonxml::debug("Alignemnt = $align");
3187: # LaTeX's image/text wrapping is really bad since it wants to
3188: # make figures float.
3189: # The user has the optional parameter (applicable only to l/r
3190: # alignment to use the picins/parpic directive to get wrapped text
3191: # this is also imperfect.. that's why we give them a choice...
3192: # so they can't yell at us for our choice.
3193: #
3194: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3195: $parstack,
3196: $safeeval,
3197: undef,0);
3198: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3199: if(!$latex_rendering) {
3200: $latex_rendering = "texwrap";
3201: }
3202: # using texwrap inside a table does not work. So, if after all of this,
3203: # texwrap is on, we turn it off if we detect we're in a table:
3204: #
3205: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3206: $latex_rendering = 'parpic';
3207: }
3208:
3209: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3210:
3211: #if original bmp/gif/jpg/png file exist do following:
3212: my $origsrc=$src;
3213: my ($path,$file) = &get_eps_image($src);
3214: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3215: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3216: &Apache::lonxml::debug("path = $path file = $file src = $src");
3217: if (-e $src) {
3218: &Apache::lonxml::debug("$src exists");
3219: my ($height_param,$width_param)=
3220: &image_size($origsrc,0.3,$parstack,$safeeval);
3221: my $size;
3222: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3223: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3224: # Default size if not able to extract that (e.g. eps image).
3225:
3226: # &Apache::lonnet::logthis("Size = $size");
3227:
3228: $size='['.$size;
3229: $size=~s/,$/]/;
3230: $currentstring .= '\graphicspath{{'.$path.'}}'
3231: .'\includegraphics'.$size.'{'.$file.'} ';
3232: my $closure;
3233: ($currentstring, $closure) = &align_latex_image($align,
3234: $latex_rendering,
3235: $currentstring,
3236: $width_param,
3237: $height_param);
3238: $currentstring .= $closure;
3239:
3240: } else {
3241: &Apache::lonxml::debug("$src does not exist");
3242: #original image file doesn't exist so check the alt attribute
3243: my $alt =
3244: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3245: unless ($alt) {
3246: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3247: }
3248:
3249: if ($alt) { $currentstring .= ' '.$alt.' '; }
3250: }
3251:
3252: # And here's where the semi-quote breaks down: allow the user
3253: # to edit the beast as well by rendering the problem for edit:
3254: } elsif ($target eq 'edit') {
3255: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3256: $currentstring .=&Apache::edit::tag_start($target,$token);
3257: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3258: &Apache::edit::browse('src',undef,'alt',$only).' '.
3259: &Apache::edit::search('src',undef,'alt').'<br />';
3260: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3261: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3262: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3263: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3264: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3265: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3266: ['','bottom','middle','top','left','right'],$token,5);
3267: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3268: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3269: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3270: ['no','yes'], $token, 2);
3271: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3272: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3273: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3274: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3275: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3276:
3277: if ($token->[2]{'src'}=~/\$/) {
3278: $currentstring.='Variable image source';
3279: } else {
3280: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3281: if ($width) { $currentstring.=' width="'.$width.'" '; }
3282: if ($height) { $currentstring.=' height="'.$height.'" '; }
3283: $currentstring .= ' />';
3284: }
3285: } elsif ($target eq 'modified') {
3286: my ($osrc,$owidth,$oheight)=
3287: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3288: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3289: $safeeval,'src','alt','align',
3290: 'TeXwidth','TeXheight', 'TeXwrap',
3291: 'width','height','encrypturl');
3292: my ($nsrc,$nwidth,$nheight)=
3293: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3294: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3295: &image_replication($loc);
3296: my ($iwidth,$iheight);
3297: if (-e $loc) {
3298: my $image = Image::Magick->new;
3299: $image->Read($loc);
3300: ($iwidth, $iheight) = ($image->Get('width'),
3301: $image->Get('height'));
3302: }
3303: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3304: # changed image or no size specified,
3305: # if they didn't explicitly change the
3306: # width or height use the ones from the image
3307: if ($iwidth && $iheight) {
3308: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3309: $token->[2]{'width'} = $iwidth;$ctag=1;
3310: }
3311: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3312: $token->[2]{'height'}=$iheight;$ctag=1;
3313: }
3314: }
3315: }
3316: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3317: # if we don't have a width or height
3318: if ($iwidth && $cwidth && !$cheight) {
3319: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3320: }
3321: if ($iheight && $cheight && !$cwidth) {
3322: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3323: }
3324: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3325: }
3326:
3327: return $currentstring;
3328: }
3329:
3330: sub end_img {
3331: my ($target,$token) = @_;
3332: my $currentstring = '';
3333: if ($target eq 'web' || $target eq 'webgrade') {
3334: $currentstring = $token->[2];
3335: } elsif ($target eq 'tex') {
3336: $currentstring = '';
3337: }
3338: return $currentstring;
3339: }
3340:
3341: #-- <applet> tag (end tag required)
3342: sub start_applet {
3343: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3344:
3345: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3346: &Apache::lonxml::extlink($code);
3347: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3348: undef,1);
3349: &Apache::lonxml::extlink($archive);
3350: my $currentstring = '';
3351: if ($target eq 'web' || $target eq 'webgrade') {
3352: if ($env{'browser.appletsuppress'} ne 'on') {
3353: $currentstring = &Apache::lonenc::encrypt_ref($token,
3354: {'code'=>$code,
3355: 'archive'=>$archive}
3356: );
3357: } else {
3358: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3359: $safeeval,undef,1);
3360: unless ($alttag) {
3361: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3362: $code);
3363: }
3364: $currentstring='[APPLET: '.$alttag.']';
3365: }
3366: } elsif ($target eq 'tex') {
3367: # Turn off some stuff we can't be inside thank you LaTeX
3368:
3369:
3370: my $restart_sub = 0;
3371: my $restart_sup = 0;
3372:
3373: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3374: # using the start_ stop_ functions.. those tags only care about
3375: # $target.
3376:
3377: if (&is_inside_of($tagstack, "sub")) {
3378: $restart_sub = 1;
3379: $currentstring .= &end_sub($target, $token, $tagstack,
3380: $parstack, $parser, $safeeval);
3381: }
3382: if (&is_inside_of($tagstack, "sup")) {
3383: $restart_sup = 1;
3384: $currentstring .= &end_sup($target, $token, $tagstack,
3385: $parstack, $parser, $safeeval);
3386: }
3387:
3388: # Now process the applet; just replace it with its alt attribute.
3389:
3390: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3391: $safeeval,undef,1);
3392: unless ($alttag) {
3393: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3394: undef,1);
3395: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3396: $code);
3397: }
3398: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3399: '.}\end{center}';
3400:
3401: # Turn stuff back on that we can't be inside of.
3402:
3403: if ($restart_sub) {
3404: $currentstring .= &start_sub($target, $token, $tagstack,
3405: $parstack, $parser, $safeeval);
3406: }
3407: if ($restart_sup) {
3408: $currentstring .= &start_sup($target, $token, $tagstack,
3409: $parstack, $parser, $safeeval);
3410: }
3411: }
3412: return $currentstring;
3413: }
3414:
3415: sub end_applet {
3416: my ($target,$token) = @_;
3417: my $currentstring = '';
3418: if ($target eq 'web' || $target eq 'webgrade') {
3419: $currentstring = $token->[2];
3420: } elsif ($target eq 'tex') {
3421: }
3422: return $currentstring;
3423: }
3424:
3425: #-- <embed> tag (end tag optional/required)
3426: sub start_embed {
3427: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3428: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3429: &Apache::lonxml::extlink($src);
3430: my $currentstring = '';
3431: if ($target eq 'web' || $target eq 'webgrade') {
3432: if ($env{'browser.embedsuppress'} ne 'on') {
3433: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3434: } else {
3435: my $alttag=&Apache::lonxml::get_param
3436: ('alt',$parstack,$safeeval,undef,1);
3437: unless ($alttag) {
3438: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3439: }
3440: $currentstring='[EMBED: '.$alttag.']';
3441: }
3442: } elsif ($target eq 'tex') {
3443: }
3444: return $currentstring;
3445: }
3446:
3447: sub end_embed {
3448: my ($target,$token) = @_;
3449: my $currentstring = '';
3450: if ($target eq 'web' || $target eq 'webgrade') {
3451: $currentstring = $token->[2];
3452: } elsif ($target eq 'tex') {
3453: }
3454: return $currentstring;
3455: }
3456:
3457: #-- <param> tag (end tag forbidden)
3458: sub start_param {
3459: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3460: if (&Apache::lonxml::get_param('name',$parstack,
3461: $safeeval,undef,1)=~/^cabbase$/i) {
3462: my $value=&Apache::lonxml::get_param('value',$parstack,
3463: $safeeval,undef,1);
3464: &Apache::lonxml::extlink($value);
3465: }
3466:
3467: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3468: &Apache::lonxml::extlink($src);
3469: my $currentstring = '';
3470: if ($target eq 'web' || $target eq 'webgrade') {
3471: my %toconvert;
3472: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3473: if ($src) { $toconvert{'src'}= $src; }
3474: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3475: undef,1);
3476: if ($name=~/^cabbase$/i) {
3477: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3478: $safeeval,undef,1);
3479: }
3480: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3481: } elsif ($target eq 'tex') {
3482: }
3483: return $currentstring;
3484: }
3485:
3486: sub end_param {
3487: my ($target,$token) = @_;
3488: my $currentstring = '';
3489: if ($target eq 'web' || $target eq 'webgrade') {
3490: $currentstring = $token->[2];
3491: } elsif ($target eq 'tex') {
3492: }
3493: return $currentstring;
3494: }
3495:
3496: #-- <allow> tag
3497: sub start_allow {
3498: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3499: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3500: &Apache::lonxml::extlink($src);
3501:
3502: if ($target eq 'tex') { &image_replication($src); }
3503: my $result;
3504: if ($target eq 'edit') {
3505: $result .=&Apache::edit::tag_start($target,$token);
3506: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3507: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3508: } elsif ($target eq 'modified') {
3509: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3510: $safeeval,'src');
3511: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3512: }
3513: return $result;
3514: }
3515:
3516: sub end_allow {
3517: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3518: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3519: return '';
3520: }
3521:
3522: #-- Frames (end tag required)
3523: #-- <frameset>
3524: sub start_frameset {
3525: my ($target,$token) = @_;
3526: my $currentstring = ''; # Close any pending para.
3527: if ($target eq 'web' || $target eq 'webgrade') {
3528: $currentstring =
3529: &Apache::loncommon::start_page($Apache::londefdef::title,
3530: $Apache::londefdef::head,
3531: {'add_entries' => $token->[2],
3532: # 'no_title' => 1,
3533: 'force_register' => 1,
3534: 'frameset' => 1,});
3535:
3536: }
3537: return $currentstring;
3538: }
3539:
3540: sub end_frameset {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web' || $target eq 'webgrade') {
3544: $currentstring = $token->[2];
3545: }
3546: return $currentstring;
3547: }
3548:
3549: #-- <xmp> (end tag required)
3550: sub start_xmp {
3551: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3552: my $currentstring = '';
3553: if ($target eq 'web' || $target eq 'webgrade') {
3554: $currentstring .= $token->[4];
3555: } elsif ($target eq 'tex') {
3556: $currentstring .= '\begin{verbatim}';
3557: }
3558: return $currentstring;
3559: }
3560:
3561: sub end_xmp {
3562: my ($target,$token) = @_;
3563: my $currentstring = '';
3564: if ($target eq 'web' || $target eq 'webgrade') {
3565: $currentstring .= $token->[2];
3566: } elsif ($target eq 'tex') {
3567: $currentstring .= '\end{verbatim}';
3568: }
3569: return $currentstring;
3570: }
3571:
3572: #-- <pre> (end tag required)
3573: sub start_pre {
3574: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3575: my $currentstring = &end_p(); # close off pending <p>
3576: if ($target eq 'web' || $target eq 'webgrade') {
3577: $currentstring .= $token->[4];
3578: } elsif ($target eq 'tex') {
3579: $currentstring .= '\begin{verbatim}';
3580: &Apache::lonxml::disable_LaTeX_substitutions();
3581: }
3582: return $currentstring;
3583: }
3584:
3585: sub end_pre {
3586: my ($target,$token) = @_;
3587: my $currentstring = '';
3588: if ($target eq 'web' || $target eq 'webgrade') {
3589: $currentstring .= $token->[2];
3590: } elsif ($target eq 'tex') {
3591: $currentstring .= '\end{verbatim}';
3592: &Apache::lonxml::enable_LaTeX_substitutions();
3593: }
3594: return $currentstring;
3595: }
3596:
3597: #-- <insert>
3598: sub start_insert {
3599: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3600: my $currentstring = '';
3601: if ($target eq 'web' || $target eq 'webgrade') {
3602: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3603: $currentstring .= '<b>'.$display.'</b>';;
3604: }
3605: return $currentstring;
3606: }
3607:
3608: sub end_insert {
3609: my ($target,$token) = @_;
3610: my $currentstring = '';
3611: if ($target eq 'web' || $target eq 'webgrade') {
3612: $currentstring .= '';
3613: }
3614: return $currentstring;
3615: }
3616:
3617: #-- <externallink>
3618: sub start_externallink {
3619: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3620: my $currentstring = '';
3621: if ($target eq 'web' || $target eq 'webgrade') {
3622: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3623: $currentstring .= '<b>'.$display.'</b>';;
3624: }
3625: return $currentstring;
3626: }
3627:
3628: sub end_externallink {
3629: my ($target,$token) = @_;
3630: my $currentstring = '';
3631: if ($target eq 'web' || $target eq 'webgrade') {
3632: $currentstring .= '';
3633: }
3634: return $currentstring;
3635: }
3636:
3637: #-- <blankspace heigth="">
3638: sub start_blankspace {
3639: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3640: my $currentstring = &end_p(); # closes off any unclosed <p>
3641: if ($target eq 'tex') {
3642: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3643: $currentstring .= '\vskip '.$howmuch.' ';
3644: }
3645: return $currentstring;
3646: }
3647:
3648: sub end_blankspace {
3649: my ($target,$token) = @_;
3650: my $currentstring = '';
3651: if ($target eq 'tex') {
3652: $currentstring .= '';
3653: }
3654: return $currentstring;
3655: }
3656:
3657: #-- <abbr> tag (end tag required)
3658: sub start_abbr {
3659: my ($target,$token) = @_;
3660: my $currentstring = '';
3661: if ($target eq 'web' || $target eq 'webgrade') {
3662: $currentstring = $token->[4];
3663: }
3664: return $currentstring;
3665: }
3666:
3667: sub end_abbr {
3668: my ($target,$token) = @_;
3669: my $currentstring = '';
3670: if ($target eq 'web' || $target eq 'webgrade') {
3671: $currentstring = $token->[2];
3672: }
3673: return $currentstring;
3674: }
3675:
3676: #-- <acronym> tag (end tag required)
3677: sub start_acronym {
3678: my ($target,$token) = @_;
3679: my $currentstring = '';
3680: if ($target eq 'web' || $target eq 'webgrade') {
3681: $currentstring = $token->[4];
3682: }
3683: return $currentstring;
3684: }
3685:
3686: sub end_acronym {
3687: my ($target,$token) = @_;
3688: my $currentstring = '';
3689: if ($target eq 'web' || $target eq 'webgrade') {
3690: $currentstring = $token->[2];
3691: }
3692: return $currentstring;
3693: }
3694:
3695: #-- <area> tag (end tag forbidden)
3696: sub start_area {
3697: my ($target,$token) = @_;
3698: my $currentstring = '';
3699: if ($target eq 'web' || $target eq 'webgrade') {
3700: $currentstring = $token->[4];
3701: }
3702: return $currentstring;
3703: }
3704:
3705: sub end_area {
3706: my ($target,$token) = @_;
3707: my $currentstring = '';
3708: if ($target eq 'web' || $target eq 'webgrade') {
3709: $currentstring = $token->[2];
3710: }
3711: return $currentstring;
3712: }
3713:
3714: #-- <base> tag (end tag forbidden)
3715: sub start_base {
3716: my ($target,$token) = @_;
3717: my $currentstring = '';
3718: if ($target eq 'web' || $target eq 'webgrade') {
3719: $currentstring = $token->[4];
3720: }
3721: return $currentstring;
3722: }
3723:
3724: sub end_base {
3725: my ($target,$token) = @_;
3726: my $currentstring = '';
3727: if ($target eq 'web' || $target eq 'webgrade') {
3728: $currentstring = $token->[2];
3729: }
3730: return $currentstring;
3731: }
3732:
3733: #-- <bdo> tag (end tag required)
3734: sub start_bdo {
3735: my ($target,$token) = @_;
3736: my $currentstring = '';
3737: if ($target eq 'web' || $target eq 'webgrade') {
3738: $currentstring = $token->[4];
3739: }
3740: return $currentstring;
3741: }
3742:
3743: sub end_bdo {
3744: my ($target,$token) = @_;
3745: my $currentstring = '';
3746: if ($target eq 'web' || $target eq 'webgrade') {
3747: $currentstring = $token->[2];
3748: }
3749: return $currentstring;
3750: }
3751:
3752: #-- <bgsound> tag (end tag optional)
3753: sub start_bgsound {
3754: my ($target,$token) = @_;
3755: my $currentstring = '';
3756: if ($target eq 'web' || $target eq 'webgrade') {
3757: $currentstring = $token->[4];
3758: }
3759: return $currentstring;
3760: }
3761:
3762: sub end_bgsound {
3763: my ($target,$token) = @_;
3764: my $currentstring = '';
3765: if ($target eq 'web' || $target eq 'webgrade') {
3766: $currentstring = $token->[2];
3767: }
3768: return $currentstring;
3769: }
3770:
3771: #-- <blink> tag (end tag required)
3772: sub start_blink {
3773: my ($target,$token) = @_;
3774: my $currentstring = '';
3775: if ($target eq 'web' || $target eq 'webgrade') {
3776: $currentstring = $token->[4];
3777: }
3778: return $currentstring;
3779: }
3780:
3781: sub end_blink {
3782: my ($target,$token) = @_;
3783: my $currentstring = '';
3784: if ($target eq 'web' || $target eq 'webgrade') {
3785: $currentstring = $token->[2];
3786: }
3787: return $currentstring;
3788: }
3789:
3790: #-- <blockquote> tag (end tag required)
3791: sub start_blockquote {
3792: my ($target,$token) = @_;
3793: my $currentstring = &end_p(); # Close any unclosed <p>
3794: if ($target eq 'web' || $target eq 'webgrade') {
3795: $currentstring .= $token->[4];
3796: }
3797: if ($target eq 'tex') {
3798: $currentstring .= '\begin{quote}';
3799: }
3800: return $currentstring;
3801: }
3802:
3803: sub end_blockquote {
3804: my ($target,$token) = @_;
3805: my $currentstring = '';
3806: if ($target eq 'web' || $target eq 'webgrade') {
3807: $currentstring = $token->[2];
3808: }
3809: if ($target eq 'tex') {
3810: $currentstring = '\end{quote}';
3811: }
3812: return $currentstring;
3813: }
3814:
3815: #-- <button> tag (end tag required)
3816: sub start_button {
3817: my ($target,$token) = @_;
3818: my $currentstring = '';
3819: if ($target eq 'web' || $target eq 'webgrade') {
3820: $currentstring = $token->[4];
3821: }
3822: return $currentstring;
3823: }
3824:
3825: sub end_button {
3826: my ($target,$token) = @_;
3827: my $currentstring = '';
3828: if ($target eq 'web' || $target eq 'webgrade') {
3829: $currentstring = $token->[2];
3830: }
3831: return $currentstring;
3832: }
3833:
3834: #-- <caption> tag (end tag required)
3835: sub start_caption {
3836: my ($target,$token) = @_;
3837: my $currentstring = '';
3838: if ($target eq 'web' || $target eq 'webgrade') {
3839: $currentstring = $token->[4];
3840: }
3841: return $currentstring;
3842: }
3843:
3844: sub end_caption {
3845: my ($target,$token) = @_;
3846: my $currentstring = '';
3847: if ($target eq 'web' || $target eq 'webgrade') {
3848: $currentstring = $token->[2];
3849: }
3850: return $currentstring;
3851: }
3852:
3853: #-- <col> tag (end tag forbdden)
3854: sub start_col {
3855: my ($target,$token) = @_;
3856: my $currentstring = '';
3857: if ($target eq 'web' || $target eq 'webgrade') {
3858: $currentstring = $token->[4];
3859: }
3860: return $currentstring;
3861: }
3862:
3863: sub end_col {
3864: my ($target,$token) = @_;
3865: my $currentstring = '';
3866: if ($target eq 'web' || $target eq 'webgrade') {
3867: $currentstring = $token->[2];
3868: }
3869: return $currentstring;
3870: }
3871:
3872: #-- <colgroup> tag (end tag optional)
3873: sub start_colgroup {
3874: my ($target,$token) = @_;
3875: my $currentstring = '';
3876: if ($target eq 'web' || $target eq 'webgrade') {
3877: $currentstring = $token->[4];
3878: }
3879: return $currentstring;
3880: }
3881:
3882: sub end_colgroup {
3883: my ($target,$token) = @_;
3884: my $currentstring = '';
3885: if ($target eq 'web' || $target eq 'webgrade') {
3886: $currentstring = $token->[2];
3887: }
3888: return $currentstring;
3889: }
3890:
3891: #-- <del> tag (end tag required)
3892: sub start_del {
3893: my ($target,$token) = @_;
3894: my $currentstring = '';
3895: if ($target eq 'web' || $target eq 'webgrade') {
3896: $currentstring = $token->[4];
3897: }
3898: return $currentstring;
3899: }
3900:
3901: sub end_del {
3902: my ($target,$token) = @_;
3903: my $currentstring = '';
3904: if ($target eq 'web' || $target eq 'webgrade') {
3905: $currentstring = $token->[2];
3906: }
3907: return $currentstring;
3908: }
3909:
3910: #-- <fieldset> tag (end tag required)
3911: sub start_fieldset {
3912: my ($target,$token) = @_;
3913: my $currentstring = '';
3914: if ($target eq 'web' || $target eq 'webgrade') {
3915: $currentstring = $token->[4];
3916: }
3917: return $currentstring;
3918: }
3919:
3920: sub end_fieldset {
3921: my ($target,$token) = @_;
3922: my $currentstring = '';
3923: if ($target eq 'web' || $target eq 'webgrade') {
3924: $currentstring = $token->[2];
3925: }
3926: return $currentstring;
3927: }
3928:
3929: #-- <frame> tag (end tag forbidden)
3930: sub start_frame {
3931: my ($target,$token) = @_;
3932: my $currentstring = '';
3933: if ($target eq 'web' || $target eq 'webgrade') {
3934: $currentstring = $token->[4];
3935: }
3936: return $currentstring;
3937: }
3938:
3939: sub end_frame {
3940: my ($target,$token) = @_;
3941: my $currentstring = '';
3942: if ($target eq 'web' || $target eq 'webgrade') {
3943: $currentstring = $token->[2];
3944: }
3945: return $currentstring;
3946: }
3947:
3948: #-- <iframe> tag (end tag required)
3949: sub start_iframe {
3950: my ($target,$token) = @_;
3951: my $currentstring = '';
3952: if ($target eq 'web' || $target eq 'webgrade') {
3953: $currentstring = $token->[4];
3954: }
3955: return $currentstring;
3956: }
3957:
3958: sub end_iframe {
3959: my ($target,$token) = @_;
3960: my $currentstring = '';
3961: if ($target eq 'web' || $target eq 'webgrade') {
3962: $currentstring = $token->[2];
3963: }
3964: return $currentstring;
3965: }
3966:
3967: #-- <ins> tag (end tag required)
3968: sub start_ins {
3969: my ($target,$token) = @_;
3970: my $currentstring = '';
3971: if ($target eq 'web' || $target eq 'webgrade') {
3972: $currentstring = $token->[4];
3973: }
3974: return $currentstring;
3975: }
3976:
3977: sub end_ins {
3978: my ($target,$token) = @_;
3979: my $currentstring = '';
3980: if ($target eq 'web' || $target eq 'webgrade') {
3981: $currentstring = $token->[2];
3982: }
3983: return $currentstring;
3984: }
3985:
3986: #-- <isindex> tag (end tag forbidden)
3987: sub start_isindex {
3988: my ($target,$token) = @_;
3989: my $currentstring = '';
3990: if ($target eq 'web' || $target eq 'webgrade') {
3991: $currentstring = $token->[4];
3992: }
3993: return $currentstring;
3994: }
3995:
3996: sub end_isindex {
3997: my ($target,$token) = @_;
3998: my $currentstring = '';
3999: if ($target eq 'web' || $target eq 'webgrade') {
4000: $currentstring = $token->[2];
4001: }
4002: return $currentstring;
4003: }
4004:
4005: #-- <keygen> tag (end tag forbidden)
4006: sub start_keygen {
4007: my ($target,$token) = @_;
4008: my $currentstring = '';
4009: if ($target eq 'web' || $target eq 'webgrade') {
4010: $currentstring = $token->[4];
4011: }
4012: return $currentstring;
4013: }
4014:
4015: sub end_keygen {
4016: my ($target,$token) = @_;
4017: my $currentstring = '';
4018: if ($target eq 'web' || $target eq 'webgrade') {
4019: $currentstring = $token->[2];
4020: }
4021: return $currentstring;
4022: }
4023:
4024: #-- <label> tag
4025: sub start_label {
4026: my ($target,$token) = @_;
4027: my $currentstring = '';
4028: if ($target eq 'web' || $target eq 'webgrade') {
4029: $currentstring = $token->[4];
4030: }
4031: return $currentstring;
4032: }
4033:
4034: sub end_label {
4035: my ($target,$token) = @_;
4036: my $currentstring = '';
4037: if ($target eq 'web' || $target eq 'webgrade') {
4038: $currentstring = $token->[2];
4039: }
4040: return $currentstring;
4041: }
4042:
4043: #-- <layer> tag (end tag required)
4044: sub start_layer {
4045: my ($target,$token) = @_;
4046: my $currentstring = '';
4047: if ($target eq 'web' || $target eq 'webgrade') {
4048: $currentstring = $token->[4];
4049: }
4050: return $currentstring;
4051: }
4052:
4053: sub end_layer {
4054: my ($target,$token) = @_;
4055: my $currentstring = '';
4056: if ($target eq 'web' || $target eq 'webgrade') {
4057: $currentstring = $token->[2];
4058: }
4059: return $currentstring;
4060: }
4061:
4062: #-- <legend> tag (end tag required)
4063: sub start_legend {
4064: my ($target,$token) = @_;
4065: my $currentstring = '';
4066: if ($target eq 'web' || $target eq 'webgrade') {
4067: $currentstring = $token->[4];
4068: }
4069: return $currentstring;
4070: }
4071:
4072: sub end_legend {
4073: my ($target,$token) = @_;
4074: my $currentstring = '';
4075: if ($target eq 'web' || $target eq 'webgrade') {
4076: $currentstring = $token->[2];
4077: }
4078: return $currentstring;
4079: }
4080:
4081: #-- <link> tag (end tag forbidden)
4082: sub start_link {
4083: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4084: my $currentstring = '';
4085: if ($target eq 'web' || $target eq 'webgrade') {
4086: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4087: undef,1);
4088: &Apache::lonxml::extlink($href);
4089: $currentstring = $token->[4];
4090: }
4091: return $currentstring;
4092: }
4093:
4094: sub end_link {
4095: my ($target,$token) = @_;
4096: my $currentstring = '';
4097: if ($target eq 'web' || $target eq 'webgrade') {
4098: $currentstring = $token->[2];
4099: }
4100: return $currentstring;
4101: }
4102:
4103: #-- <marquee> tag (end tag optional)
4104: sub start_marquee {
4105: my ($target,$token) = @_;
4106: my $currentstring = '';
4107: if ($target eq 'web' || $target eq 'webgrade') {
4108: $currentstring = $token->[4];
4109: }
4110: return $currentstring;
4111: }
4112:
4113: sub end_marquee {
4114: my ($target,$token) = @_;
4115: my $currentstring = '';
4116: if ($target eq 'web' || $target eq 'webgrade') {
4117: $currentstring = $token->[2];
4118: }
4119: return $currentstring;
4120: }
4121:
4122: #-- <multicol> tag (end tag required)
4123: sub start_multicol {
4124: my ($target,$token) = @_;
4125: my $currentstring = &end_p(); # Close any pending <p>
4126: if ($target eq 'web' || $target eq 'webgrade') {
4127: $currentstring .= $token->[4];
4128: }
4129: return $currentstring;
4130: }
4131:
4132: sub end_multicol {
4133: my ($target,$token) = @_;
4134: my $currentstring = '';
4135: if ($target eq 'web' || $target eq 'webgrade') {
4136: $currentstring = $token->[2];
4137: }
4138: return $currentstring;
4139: }
4140:
4141: #-- <nobr> tag (end tag required)
4142: sub start_nobr {
4143: my ($target,$token) = @_;
4144: my $currentstring = '';
4145: if ($target eq 'web' || $target eq 'webgrade') {
4146: $currentstring = $token->[4];
4147: } elsif ($target eq 'tex') {
4148: $currentstring='\mbox{';
4149: }
4150: return $currentstring;
4151: }
4152:
4153: sub end_nobr {
4154: my ($target,$token) = @_;
4155: my $currentstring = '';
4156: if ($target eq 'web' || $target eq 'webgrade') {
4157: $currentstring = $token->[2];
4158: } elsif ($target eq 'tex') {
4159: $currentstring='}';
4160: }
4161: return $currentstring;
4162: }
4163:
4164: #-- <noembed> tag (end tag required)
4165: sub start_noembed {
4166: my ($target,$token) = @_;
4167: my $currentstring = '';
4168: if ($target eq 'web' || $target eq 'webgrade') {
4169: $currentstring = $token->[4];
4170: }
4171: return $currentstring;
4172: }
4173:
4174: sub end_noembed {
4175: my ($target,$token) = @_;
4176: my $currentstring = '';
4177: if ($target eq 'web' || $target eq 'webgrade') {
4178: $currentstring = $token->[2];
4179: }
4180: return $currentstring;
4181: }
4182:
4183: #-- <noframes> tag (end tag required)
4184: sub start_noframes {
4185: my ($target,$token) = @_;
4186: my $currentstring = '';
4187: if ($target eq 'web' || $target eq 'webgrade') {
4188: $currentstring = $token->[4];
4189: }
4190: return $currentstring;
4191: }
4192:
4193: sub end_noframes {
4194: my ($target,$token) = @_;
4195: my $currentstring = '';
4196: if ($target eq 'web' || $target eq 'webgrade') {
4197: $currentstring = $token->[2];
4198: }
4199: return $currentstring;
4200: }
4201:
4202: #-- <nolayer> tag (end tag required)
4203: sub start_nolayer {
4204: my ($target,$token) = @_;
4205: my $currentstring = '';
4206: if ($target eq 'web' || $target eq 'webgrade') {
4207: $currentstring = $token->[4];
4208: }
4209: return $currentstring;
4210: }
4211:
4212: sub end_nolayer {
4213: my ($target,$token) = @_;
4214: my $currentstring = '';
4215: if ($target eq 'web' || $target eq 'webgrade') {
4216: $currentstring = $token->[2];
4217: }
4218: return $currentstring;
4219: }
4220:
4221: #-- <noscript> tag (end tag required)
4222: sub start_noscript {
4223: my ($target,$token) = @_;
4224: my $currentstring = '';
4225: if ($target eq 'web' || $target eq 'webgrade') {
4226: $currentstring = $token->[4];
4227: }
4228: return $currentstring;
4229: }
4230:
4231: sub end_noscript {
4232: my ($target,$token) = @_;
4233: my $currentstring = '';
4234: if ($target eq 'web' || $target eq 'webgrade') {
4235: $currentstring = $token->[2];
4236: }
4237: return $currentstring;
4238: }
4239:
4240: #-- <object> tag (end tag required)
4241: sub start_object {
4242: my ($target,$token) = @_;
4243: my $currentstring = '';
4244: if ($target eq 'web' || $target eq 'webgrade') {
4245: $currentstring = $token->[4];
4246: }
4247: return $currentstring;
4248: }
4249:
4250: sub end_object {
4251: my ($target,$token) = @_;
4252: my $currentstring = '';
4253: if ($target eq 'web' || $target eq 'webgrade') {
4254: $currentstring = $token->[2];
4255: }
4256: return $currentstring;
4257: }
4258:
4259: #-- <optgroup> tag (end tag required)
4260: sub start_optgroup {
4261: my ($target,$token) = @_;
4262: my $currentstring = '';
4263: if ($target eq 'web' || $target eq 'webgrade') {
4264: $currentstring = $token->[4];
4265: }
4266: return $currentstring;
4267: }
4268:
4269: sub end_optgroup {
4270: my ($target,$token) = @_;
4271: my $currentstring = '';
4272: if ($target eq 'web' || $target eq 'webgrade') {
4273: $currentstring = $token->[2];
4274: }
4275: return $currentstring;
4276: }
4277:
4278: #-- <samp> tag (end tag required)
4279: sub start_samp {
4280: my ($target,$token) = @_;
4281: my $currentstring = '';
4282: if ($target eq 'web' || $target eq 'webgrade') {
4283: $currentstring = $token->[4];
4284: } elsif ($target eq 'tex') {
4285: $currentstring='\texttt{';
4286: }
4287: return $currentstring;
4288: }
4289:
4290: sub end_samp {
4291: my ($target,$token) = @_;
4292: my $currentstring = '';
4293: if ($target eq 'web' || $target eq 'webgrade') {
4294: $currentstring = $token->[2];
4295: } elsif ($target eq 'tex') {
4296: $currentstring='}';
4297: }
4298: return $currentstring;
4299: }
4300:
4301: #-- <server> tag
4302: sub start_server {
4303: my ($target,$token) = @_;
4304: my $currentstring = '';
4305: if ($target eq 'web' || $target eq 'webgrade') {
4306: $currentstring = $token->[4];
4307: }
4308: return $currentstring;
4309: }
4310:
4311: sub end_server {
4312: my ($target,$token) = @_;
4313: my $currentstring = '';
4314: if ($target eq 'web' || $target eq 'webgrade') {
4315: $currentstring = $token->[2];
4316: }
4317: return $currentstring;
4318: }
4319:
4320: #-- <spacer> tag (end tag forbidden)
4321: sub start_spacer {
4322: my ($target,$token) = @_;
4323: my $currentstring = &end_p(); # Close off any open <p> tag.
4324: if ($target eq 'web' || $target eq 'webgrade') {
4325: $currentstring .= $token->[4];
4326: }
4327: return $currentstring;
4328: }
4329:
4330: sub end_spacer {
4331: my ($target,$token) = @_;
4332: my $currentstring = '';
4333: if ($target eq 'web' || $target eq 'webgrade') {
4334: $currentstring = $token->[2];
4335: }
4336: return $currentstring;
4337: }
4338:
4339: #-- <span> tag (end tag required)
4340: sub start_span {
4341: my ($target,$token) = @_;
4342: my $currentstring = '';
4343: if ($target eq 'web' || $target eq 'webgrade') {
4344: $currentstring = $token->[4];
4345: }
4346: return $currentstring;
4347: }
4348:
4349: sub end_span {
4350: my ($target,$token) = @_;
4351: my $currentstring = '';
4352: if ($target eq 'web' || $target eq 'webgrade') {
4353: $currentstring = $token->[2];
4354: }
4355: return $currentstring;
4356: }
4357:
4358: #-- <tbody> tag (end tag optional)
4359: sub start_tbody {
4360: my ($target,$token) = @_;
4361: my $currentstring = '';
4362: if ($target eq 'web' || $target eq 'webgrade') {
4363: $currentstring = $token->[4];
4364: }
4365: return $currentstring;
4366: }
4367:
4368: sub end_tbody {
4369: my ($target,$token) = @_;
4370: my $currentstring = '';
4371: if ($target eq 'web' || $target eq 'webgrade') {
4372: $currentstring = $token->[2];
4373: }
4374: return $currentstring;
4375: }
4376:
4377: #-- <tfoot> tag (end tag optional)
4378: sub start_tfoot {
4379: my ($target,$token) = @_;
4380: my $currentstring = '';
4381: if ($target eq 'web' || $target eq 'webgrade') {
4382: $currentstring = $token->[4];
4383: }
4384: return $currentstring;
4385: }
4386:
4387: sub end_tfoot {
4388: my ($target,$token) = @_;
4389: my $currentstring = '';
4390: if ($target eq 'web' || $target eq 'webgrade') {
4391: $currentstring = $token->[2];
4392: }
4393: return $currentstring;
4394: }
4395:
4396: #-- <thead> tag (end tag optional)
4397: sub start_thead {
4398: my ($target,$token) = @_;
4399: my $currentstring = '';
4400: if ($target eq 'web' || $target eq 'webgrade') {
4401: $currentstring = $token->[4];
4402: }
4403: return $currentstring;
4404: }
4405:
4406: sub end_thead {
4407: my ($target,$token) = @_;
4408: my $currentstring = '';
4409: if ($target eq 'web' || $target eq 'webgrade') {
4410: $currentstring = $token->[2];
4411: }
4412: return $currentstring;
4413: }
4414:
4415: #-- <var> tag
4416: sub start_var {
4417: my ($target,$token) = @_;
4418: my $currentstring = '';
4419: if ($target eq 'web' || $target eq 'webgrade') {
4420: $currentstring = $token->[4];
4421: } elsif ($target eq 'tex') {
4422: $currentstring = '\textit{';
4423: }
4424: return $currentstring;
4425: }
4426:
4427: sub end_var {
4428: my ($target,$token) = @_;
4429: my $currentstring = '';
4430: if ($target eq 'web' || $target eq 'webgrade') {
4431: $currentstring = $token->[2];
4432: } elsif ($target eq 'tex') {
4433: $currentstring = '}';
4434: }
4435: return $currentstring;
4436: }
4437:
4438: #-- <wbr> tag (end tag forbidden)
4439: sub start_wbr {
4440: my ($target,$token) = @_;
4441: my $currentstring = '';
4442: if ($target eq 'web' || $target eq 'webgrade') {
4443: $currentstring = $token->[4];
4444: }
4445: return $currentstring;
4446: }
4447:
4448: sub end_wbr {
4449: my ($target,$token) = @_;
4450: my $currentstring = '';
4451: if ($target eq 'web' || $target eq 'webgrade') {
4452: $currentstring = $token->[2];
4453: }
4454: return $currentstring;
4455: }
4456:
4457: #-- <hideweboutput> tag
4458: sub start_hideweboutput {
4459: my ($target,$token) = @_;
4460: if ($target eq 'web' || $target eq 'webgrade') {
4461: &Apache::lonxml::startredirection();
4462: }
4463: return '';
4464: }
4465:
4466: sub end_hideweboutput {
4467: my ($target,$token) = @_;
4468: my $currentstring = '';
4469: if ($target eq 'web' || $target eq 'webgrade') {
4470: $currentstring = &Apache::lonxml::endredirection();
4471: }
4472: return '';
4473: }
4474:
4475:
4476: sub image_replication {
4477: my $src = shift;
4478: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4479: #replicates eps or ps
4480: my $epssrc = my $pssrc = $src;
4481: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4482: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4483: if (not -e $epssrc && not -e $pssrc) {
4484: my $result=&Apache::lonnet::repcopy($epssrc);
4485: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4486: }
4487: return '';
4488: }
4489:
4490:
4491:
4492: sub resize_image {
4493: my ($height_param, $width_param, $scaling,
4494: $parstack, $safeeval, $depth, $cis) = @_;
4495:
4496: # First apply the scaling...
4497:
4498: $height_param = $height_param * $scaling;
4499: $width_param = $width_param * $scaling;
4500:
4501: #do we have any specified LaTeX size of the picture?
4502: my $toget='TeXwidth';
4503: if ($cis) {
4504: $toget=lc($toget);
4505: }
4506: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4507: $safeeval,$depth,$cis);
4508: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4509: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4510: $safeeval,$depth,$cis);
4511: #do we have any specified web size of the picture?
4512: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4513: $depth,1);
4514: if ($TeXwidth) {
4515: my $old_width_param=$width_param;
4516: if ($TeXwidth=~/(\d+)\s*\%/) {
4517: $width_param = $1*$env{'form.textwidth'}/100;
4518: } else {
4519: $width_param = $TeXwidth;
4520: }
4521: if ($TeXheight) {
4522: $height_param = $TeXheight;
4523: } elsif ($old_width_param) {
4524: $height_param=$TeXwidth/$old_width_param*$height_param;
4525: }
4526: } elsif ($TeXheight) {
4527: $height_param = $TeXheight;
4528: if ($height_param) {
4529: $width_param = $TeXheight/$height_param*$width_param;
4530: }
4531: } elsif ($width) {
4532: my $old_width_param=$width_param;
4533: $width_param = $width*$scaling;
4534: if ($old_width_param) {
4535: $height_param=$width_param/$old_width_param*$height_param;
4536: }
4537: }
4538: if ($width_param > $env{'form.textwidth'}) {
4539: my $old_width_param=$width_param;
4540: $width_param =0.95*$env{'form.textwidth'};
4541: if ($old_width_param) {
4542: $height_param=$width_param/$old_width_param*$height_param;
4543: }
4544: }
4545:
4546: return ($height_param, $width_param);
4547: }
4548:
4549: sub image_size {
4550: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4551:
4552: #size of image from gif/jpg/jpeg/png
4553: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4554: if (-e $ressrc) {
4555: $src = $ressrc;
4556: }
4557: my $image = Image::Magick->new;
4558: my $current_figure = $image->Read($src);
4559: my $width_param = $image->Get('width');
4560: my $height_param = $image->Get('height');
4561: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4562: undef($image);
4563:
4564: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4565: $scaling, $parstack, $safeeval,
4566: $depth, $cis);
4567:
4568: return ($height_param, $width_param);
4569: }
4570:
4571: sub image_width {
4572: my ($height, $width) = &image_size(@_);
4573: return $width;
4574: }
4575: # Not yet 100% sure this is correct in all circumstances..
4576: # due to my uncertainty about mods to image_size.
4577: #
4578: sub image_height {
4579: my ($height, $width) = &image_size(@_);
4580: return $height;
4581: }
4582:
4583: sub get_eps_image {
4584: my ($src)=@_;
4585: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4586:
4587: # In order to prevent the substitution of the alt text, we need to
4588: # be sure the orig_src file is on system now so:
4589:
4590: if (! -e $orig_src) {
4591: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4592: }
4593: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4594: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4595: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4596: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4597: &Apache::lonxml::debug("Filelocation gives: $src");
4598: if (! -e $src) {
4599: &Apache::lonxml::debug("$src does not exist");
4600: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4601: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4602: #if replication failed try to find ps file
4603: $src=~s/\.eps$/\.ps/;
4604: &Apache::lonxml::debug("Now looking for $src");
4605: #if no ps file try to replicate it.
4606: my $didrepcopy = &Apache::lonnet::repcopy($src);
4607: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4608: if ( (not -e $src) ||
4609: ($didrepcopy ne 'ok')) {
4610: &Apache::lonxml::debug("Failed to find or replicate $src");
4611:
4612: #if replication failed try to produce eps file dynamically
4613: $src=~s/\.ps$/\.eps/;
4614: my $temp_file;
4615: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4616: my $newsrc=$orig_src;
4617: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4618: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4619: print FILE ("$newsrc\n");
4620: close(FILE);
4621: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4622: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4623: if ($sext ne "") { # Put the ext. back in to uniquify.
4624: $src =~ s/\.eps$/$sext.eps/;
4625: }
4626:
4627: }
4628:
4629: }
4630: } else {
4631: # If the postscript file has spaces in its name,
4632: # LaTeX will gratuitiously vomit. Therefore
4633: # queue such files for copy with " " replaced by "_".
4634: # printout.pm will know them by their .ps or .eps extensions.
4635: my $newsrc = $orig_src;
4636: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4637: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4638: print FILE "$src\n";
4639: close FILE;
4640: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4641: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4642: }
4643: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4644: $path =~ s/ /\_/g;
4645: $file =~ s/ /\_/g;
4646: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4647: return ($path.'/',$file);
4648: }
4649:
4650: sub eps_generation {
4651: my ($src,$file,$width_param) = @_;
4652: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4653: my $temp_file = Apache::File->new('>>'.$filename);
4654: print $temp_file "$src\n";
4655: my $newsrc = $src;
4656: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4657: $newsrc=~s{/home/httpd/html/res}{};
4658: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4659: $newsrc=~s{/\./}{/};
4660: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4661: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4662: $newsrc=~s{/home/httpd/lonUsers}{};
4663: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4664: }
4665: if ($newsrc=~m{/userfiles/}) {
4666: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4667: } else {
4668: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4669: }
4670: }
4671:
4672: sub file_path {
4673: my $src=shift;
4674: my ($file,$path);
4675: if ($src =~ m!(.*)/([^/]*)$!) {
4676: $file = $2;
4677: $path = $1.'/';
4678: }
4679: return $file,$path;
4680: }
4681:
4682:
4683: sub recalc {
4684: my $argument = shift;
4685: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4686: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4687: my $value=$1;
4688: my $units=$2;
4689: if ($units eq 'cm') {
4690: $value*=10;
4691: } elsif ($units eq 'in') {
4692: $value*=25.4;
4693: } elsif ($units eq 'pc') {
4694: $value*=(25.4*12/72.27);
4695: } elsif ($units eq 'pt') {
4696: $value*=(25.4/72.27);
4697: }
4698: return $value.' mm';
4699: }
4700:
4701: sub LATEX_length {
4702: my $garbage=shift;
4703: $garbage=~s/^\s+$//;
4704: $garbage=~s/^\s+(\S.*)/$1/;#space before
4705: $garbage=~s/(.*\S)\s+$/$1/;#space after
4706: $garbage=~s/(\s)+/$1/;#only one space
4707: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4708: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4709: $garbage=~s/([^\\])\$/$1/g;#$
4710: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4711: $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g;
4712: $garbage=~s/(\\pm|\\mp|\\times|\\div|\\cdot|\\ast|\\star|\\dagger|\\ddagger|\\amalg|\\cap|\\cup|\\uplus|\\sqcap|\\sqcup|\\vee|\\wedge|\\oplus|\\ominus|\\otimes|\\circ|\\bullet|\\diamond|\\lhd|\\rhd|\\unlhd|\\unrhd|\\oslash|\\odot|\\bigcirc|\\Box|\\Diamond|\\bigtriangleup|\\bigtriangledown|\\triangleleft|\\triangleright|\\setminus|\\wr)/1/g;
4713: $garbage=~s/(\\le|\\ll|\\leq|\\ge|\\geq|\\gg|\\neq|\\doreq|\\sim|\\simeq|\\subset|\\subseteq|\\sqsubset|\\sqsubseteq|\\in|\\vdash|\\models|\\supset|\\supseteq|\\sqsupset|\\sqsupseteq|\\ni|\\dash|\\perp|\\approx|\\cong|\\equiv|\\propto|\\prec|\\preceq|\\parallel|\\asymp|\\smile|\\frown|\\bowtie|\\succ|\\succeq|\\mid)/1/g;
4714: $garbage=~s/(\\not<|\\\\not\\le|\\not\\prec|\\not\\preceq|\\not\\subset|\\not\\subseteq|\\not\\sqsubseteq|\\not\\in|\\not>|\\not\\ge|\\not\\succ|\\notsucceq|\\not\\supset|\\notsupseteq|\\not\\sqsupseteq|\\notin|\\not=|\\not\\equiv|\\not\\sim|\\not\\simeq|\\not\\approx|\\not\\cong|\\not\\asymp)/1/g;
4715: $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/11/g;
4716: $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/11/g;
4717: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4718: #remove some other LaTeX command
4719: $garbage=~s|\\(\w+)\\|\\|g;
4720: $garbage=~s|\\(\w+)(\s*)|$2|g;
4721: $garbage=~s|\+|11|g;
4722: my $value=length($garbage);
4723: return $value;
4724: }
4725:
4726:
4727: sub align_latex_image {
4728: my ($align, $latex_rendering, $image, $width, $height) = @_;
4729: my $currentstring; # The 1/2 wrapped image.
4730: my $closure; # The closure of the wrappage.
4731:
4732: # if it's none just return it back
4733: if ($latex_rendering eq 'none') {
4734: return ($image,'');
4735: }
4736:
4737: # If there's an alignment specification we need to honor it here.
4738: # For the horizontal alignments, we will also honor the
4739: # value of the latex specfication. The default is parbox,
4740: # and that's used for illegal values too.
4741: #
4742: # Even though we set a default alignment value, the user
4743: # could have given us an illegal value. In that case we
4744: # just use the default alignment of bottom..
4745: $currentstring = "\n% figurewrapping \n";
4746: if ($align eq "top") {
4747: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4748: $closure = '}';
4749: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4750: my $offset = $height/2;
4751: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4752: $closure = '}';
4753: } elsif ($align eq "left") {
4754: if ($latex_rendering eq "parpic") {
4755: $currentstring .= '\parpic[l]{'.$image;
4756: $closure = '}';
4757: } elsif ($latex_rendering eq "parbox") {
4758: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4759: .$image;
4760: $closure = '\end{minipage}';
4761: } elsif ($latex_rendering eq "wrapfigure"
4762: || $latex_rendering ne 'none') { # wrapfig render
4763: $currentstring .=
4764: '\begin{wrapfigure}{l}{'.$width.'mm}'
4765: .'\scalebox{1.0}{'.$image;
4766: $closure = '}\end{wrapfigure}';
4767: }
4768: } elsif ($align eq "right") {
4769: if ($latex_rendering eq "parpic") {
4770: $currentstring .= '\parpic[r]{'.$image;
4771: $closure = '}';
4772: } elsif ($latex_rendering eq "parbox") {
4773: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4774: .$image;
4775: $closure = '\end{minipage}';
4776: } elsif ($latex_rendering eq "wrapfigure"
4777: || $latex_rendering ne 'none') { # wrapfig render
4778: $currentstring .=
4779: '\begin{wrapfigure}{r}{'.$width.'mm}'
4780: .'\scalebox{1.0}{'.$image;
4781: $closure = '}\end{wrapfigure}';
4782: }
4783: } else { # Bottom is also default.
4784: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4785: $currentstring .= "{$image";
4786: $closure = '}';
4787: }
4788: $currentstring .= "\n% end wrappage\n";
4789: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4790: return ($currentstring, $closure);
4791: }
4792:
4793:
4794: sub is_inside_of {
4795: my ($tagstack, $tag) = @_;
4796: my @stack = @$tagstack;
4797: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4798: if ($stack[$i] eq $tag) {
4799: return 1;
4800: }
4801: }
4802: return 0;
4803: }
4804:
4805:
4806: #
4807: # This sub provides the typical LaTeX prefix matter for tex output:
4808: #
4809: sub latex_header
4810: {
4811: my ($mode) = @_;
4812: my $currentstring = '';
4813:
4814: $currentstring .=
4815: "\n% &Apache::lonxml::londefdef \n" .
4816: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4817: if (($env{'form.latex_type'}=~'batchmode') ||
4818: (!$env{'request.role.adv'}) ||
4819: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4820: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4821: '\renewcommand{\deg}{$^{\circ}$}'.
4822: '\usepackage{multirow}'.
4823: '\usepackage{longtable}'.
4824: '\usepackage{textcomp}'.
4825: '\usepackage{makeidx}'.
4826: '\usepackage[dvips]{graphicx}'.
4827: '\usepackage{wrapfig}'.
4828: '\usepackage{picins}'.
4829: '\usepackage[T1]{fontenc}'."\n".
4830: '\usepackage{lmodern}'."\n".
4831: '\usepackage[postscript]{ucs}'."\n".
4832: '\usepackage[utf8x]{inputenc}'."\n".
4833: '\usepackage{pifont}' ."\n".
4834: '\usepackage{latexsym}'."\n".
4835: '\usepackage{epsfig}'.
4836: "\\usepackage{xtab}\n".
4837: "\\usepackage{tabularx}\n".
4838: "\\usepackage{booktabs}\n".
4839: "\\usepackage{array}\n".
4840: "\\usepackage{colortbl}\n".
4841: "\\usepackage{xcolor}\n".
4842: '\usepackage{calc}'.
4843: '\usepackage{amsmath}'.
4844: '\usepackage{amssymb}'.
4845: '\usepackage{amsfonts}'.
4846: '\usepackage{amsthm}'.
4847: '\usepackage{amscd}'
4848: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4849: '\usepackage[T1]{fontenc}'."\n".
4850: '\usepackage{lmodern}'."\n".
4851: '\usepackage[postscript]{ucs}'."\n".
4852: '\usepackage[utf8x]{inputenc}'."\n".
4853: '\usepackage{pifont}' . "\n";
4854:
4855: if($env{'form.pdfFormFields'} eq 'yes') {
4856: $currentstring .= '\usepackage{hyperref}'.
4857: '\usepackage{eforms}'.
4858: '\usepackage{tabularx}';
4859: }
4860:
4861: $currentstring .= '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
4862: '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
4863: $currentstring .= '\begin{document}';
4864:
4865: return $currentstring;
4866:
4867: }
4868:
4869: =pod
4870:
4871: =head1 NAME
4872:
4873: Apache::londefdef.pm
4874:
4875: =head1 SYNOPSIS
4876:
4877: Tags Default Definition Module
4878:
4879: This is part of the LearningOnline Network with CAPA project
4880: described at http://www.lon-capa.org.
4881:
4882:
4883: =head1 NOTABLE SUBROUTINES
4884:
4885: =over
4886:
4887: =item start_hideweboutput()
4888:
4889: =item end_hideweboutput()
4890:
4891: =item image_replication()
4892:
4893: =item resize_image()
4894:
4895: Get correct sizing parameter for an image given
4896: it's initial ht. and wid. This allows sizing of
4897: images that are generated on-the-fly (e.g. gnuplot)
4898: as well as serving as a utility for image_size.
4899:
4900: Parameter:
4901: height_param
4902: width_param - Initial picture dimensions.
4903: scaling - A scale factor.
4904: parstack, - the current stack of tag attributes
4905: from the xml parser
4906: safeeval, - pointer to the safespace
4907: depth, - from what level in the stack to look for attributes
4908: (assumes -1 if unspecified)
4909: cis - look for attrubutes case insensitively
4910: (assumes false)
4911:
4912: Returns:
4913: height, width - new dimensions.
4914:
4915: =item image_size()
4916:
4917: =item image_width()
4918:
4919: =item image_height()
4920:
4921: =item get_eps_image()
4922:
4923: =item eps_generation()
4924:
4925: =item file_path()
4926:
4927: =item recalc()
4928:
4929: Converts a measurement in to mm from any of
4930: the other valid LaTeX units of measure.
4931: If the units of measure are missing from the
4932: parameter, it is assumed to be in and returned
4933: with mm units of measure
4934:
4935: =item LATEX_length()
4936:
4937: =item align_latex_image()
4938:
4939: Wrap image 'stuff' inside of the LaTeX required to implement
4940: alignment:
4941: align_tex_image(align, latex_rendering, image)
4942: Where:
4943: align - The HTML alignment specification.
4944: latex_rendering - rendering hint for latex.
4945: image - The LaTeX needed to insert the image itsef.
4946: width,height - dimensions of the image.
4947: Returns:
4948: The 1/2 wrapped image and the stuff required to close the
4949: wrappage. This allows e.g. randomlabel to insert more stuff
4950: into the closure.
4951:
4952:
4953: =item is_inside_of($tagstack, $tag)
4954: This sub returns true if the current state of Xml processing is inside of the tag.
4955: Parameters:
4956: tagstack - The tagstack from the parser.
4957: tag - The tag (without the <>'s.).
4958: Sample usage:
4959: if (is_inside_of($tagstack "table")) {
4960: I'm in a table....
4961: }
4962:
4963:
4964:
4965: =back
4966:
4967: =cut
4968:
4969:
4970: 1;
4971: __END__
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