1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.406 2009/05/26 14:06:23 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: &Apache::lonhtmlcommon::add_breadcrumb({
544: 'text' => 'Construction Space',
545: 'href' => '', # FIXME Add link to /priv/[user]
546: });
547: &Apache::lonhtmlcommon::add_breadcrumb({
548: 'text' => 'HTML Editor',
549: 'href' => '',
550: });
551:
552: $currentstring =
553: &Apache::loncommon::start_page($Apache::londefdef::title,
554: $Apache::londefdef::head
555: .$extra_head,
556: {'add_entries' => $token->[2],
557: # 'no_title' => 1,
558: 'force_register' => 1});
559:
560: $currentstring .= &Apache::lonhtmlcommon::breadcrumbs()
561: .&Apache::loncommon::head_subbox(
562: &Apache::loncommon::CSTR_pageheader());
563:
564: if ($env{'request.state'} ne 'published') {
565: $currentstring.=&Apache::lonmenu::constspaceform();
566: $currentstring.=&Apache::londefdef::edit_controls();
567: }
568: $currentstring.=&Apache::lonxml::message_location();
569: } elsif ($target eq 'tex') {
570: $currentstring = ''; # '\begin{document}' is in header.
571: }
572: return $currentstring;
573: }
574:
575: sub edit_controls {
576: my ($nochgview) = @_;
577: my $result .= '
578: <form method="post">
579: <div class="LC_edit_problem_header">';
580: unless ($nochgview) {
581: $result .= '
582: <div class="LC_edit_problem_header_row1">'.
583: &Apache::lonxml::renderingoptions().'
584: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
585: </div>';
586: }
587: $result .= '
588: <div class="LC_edit_problem_header_edit_row"><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" /></div></div>
589: </form>
590: <br />';
591: return $result;
592: }
593:
594: sub end_body {
595: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
596: my $currentstring = &end_p(); # Close off unclosed <p>
597: if ($target eq 'web' || $target eq 'webgrade') {
598: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
599: } elsif ($target eq 'tex') {
600: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
601: }
602: return $currentstring;
603: }
604:
605: # \begin{center} causes a new paragprah spacing that looks odd inside
606: # of a table cell. Same at the end of a \center but with a slightly
607: # larger space .. hence center_correction and center_end_correction.
608: #
609: sub center_correction { return '\vspace*{-6 mm}'; }
610: sub center_end_correction { return '\vspace*{-7 mm}'; }
611:
612: #-- <center> tag (end tag required)
613: sub start_center {
614: my ($target,$token,$tagstack) = @_;
615: my $currentstring = &end_p(); # Close off any prior para.
616: if ($target eq 'web' || $target eq 'webgrade') {
617: $currentstring .= $token->[4];
618: } elsif ($target eq 'tex') {
619: if (&is_inside_of($tagstack, "table")) {
620: $currentstring .= ¢er_correction();
621: }
622: $currentstring .= '\begin{center}';
623: }
624: return $currentstring;
625: }
626:
627: sub end_center {
628: my ($target,$token,$tagstack) = @_;
629: my $currentstring = '';
630: if ($target eq 'web' || $target eq 'webgrade') {
631: $currentstring = $token->[2];
632: } elsif ($target eq 'tex') {
633: $currentstring = '\end{center}';
634: if (&is_inside_of($tagstack, "table")) {
635: $currentstring .= ¢er_end_correction();
636: }
637: }
638: return $currentstring;
639: }
640:
641: #-- <b> tag (end tag required)
642: # NOTE: In TeX mode disables internal <p>
643: sub start_b {
644: my ($target,$token) = @_;
645: my $currentstring = '';
646: if ($target eq 'web' || $target eq 'webgrade') {
647: $currentstring = $token->[4];
648: } elsif ($target eq 'tex') {
649: &disable_para();
650: $currentstring .= '\textbf{';
651: }
652: return $currentstring;
653: }
654:
655: sub end_b {
656: my ($target,$token) = @_;
657: my $currentstring = '';
658: if ($target eq 'web' || $target eq 'webgrade') {
659: $currentstring = $token->[2];
660: } elsif ($target eq 'tex') {
661: &enable_para();
662: $currentstring = '}';
663: }
664: return $currentstring;
665: }
666:
667: #-- <strong> tag (end tag required)
668: # NOTE: in TeX mode disables internal <p>
669: sub start_strong {
670: my ($target,$token) = @_;
671: my $currentstring = '';
672: if ($target eq 'web' || $target eq 'webgrade') {
673: $currentstring = $token->[4];
674: } elsif ($target eq 'tex') {
675: &disable_para();
676: $currentstring = '\textbf{';
677: }
678: return $currentstring;
679: }
680:
681: sub end_strong {
682: my ($target,$token) = @_;
683: my $currentstring = '';
684: if ($target eq 'web' || $target eq 'webgrade') {
685: $currentstring = $token->[2];
686: } elsif ($target eq 'tex') {
687: &enable_para();
688: $currentstring = '}';
689: }
690: return $currentstring;
691: }
692:
693: #-- <h1> tag (end tag required)
694: sub start_h1 {
695: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
696: my $currentstring = &end_p(); # Close off any prior para.
697: if ($target eq 'web' || $target eq 'webgrade') {
698: $currentstring .= $token->[4];
699: } elsif ($target eq 'tex') {
700: my $pre;
701: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
702: if ($align eq 'center') {
703: $pre='\begin{center}';
704: } elsif ($align eq 'left') {
705: $pre='\rlap{';
706: } elsif ($align eq 'right') {
707: $pre=' \hfill \llap{';
708: }
709: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
710: if (not defined $TeXsize) {$TeXsize="large";}
711: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
712: } elsif ($target eq 'meta') {
713: $currentstring.='<subject>';
714: &start_output($target);
715: }
716: return $currentstring;
717: }
718:
719: sub end_h1 {
720: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
721: my $currentstring = '';
722: if ($target eq 'web' || $target eq 'webgrade') {
723: $currentstring .= $token->[2];
724: } elsif ($target eq 'tex') {
725: my $post='\vskip 0 mm ';
726: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
727: if ($align eq 'center') {
728: $post='\end{center}';
729: } elsif ($align eq 'left') {
730: $post='} \hfill'.'\vskip 0 mm ';
731: } elsif ($align eq 'right') {
732: $post='}'.'\vskip 0 mm ';
733: }
734: $currentstring .= '}}'.$post;
735: } elsif ($target eq 'meta') {
736: &end_output($target);
737: $currentstring='</subject>';
738: }
739: return $currentstring;
740: }
741:
742: #-- <h2> tag
743: sub start_h2 {
744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
745: my $currentstring = &end_p(); # Close off any prior para.
746: if ($target eq 'web' || $target eq 'webgrade') {
747: $currentstring .= $token->[4];
748: } elsif ($target eq 'tex') {
749: my $pre;
750: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
751: if ($align eq 'center') {
752: $pre='\begin{center}';
753: } elsif ($align eq 'left') {
754: $pre='\rlap{';
755: } elsif ($align eq 'right') {
756: $pre=' \hfill \llap{';
757: }
758: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
759: if (not defined $TeXsize) {$TeXsize="large";}
760: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
761: }
762: return $currentstring;
763: }
764:
765: sub end_h2 {
766: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
767: my $currentstring = '';
768: if ($target eq 'web' || $target eq 'webgrade') {
769: $currentstring .= $token->[2];
770: } elsif ($target eq 'tex') {
771: my $post='\vskip 0 mm ';
772: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
773: if ($align eq 'center') {
774: $post='\end{center}';
775: } elsif ($align eq 'left') {
776: $post='} \hfill'.'\vskip 0 mm ';
777: } elsif ($align eq 'right') {
778: $post='}'.'\vskip 0 mm ';
779: }
780: $currentstring .= '}}'.$post;
781: }
782: return $currentstring;
783: }
784:
785: #-- <h3> tag
786: sub start_h3 {
787: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
788: my $currentstring = &end_p(); # Close off any prior para.
789: if ($target eq 'web' || $target eq 'webgrade') {
790: $currentstring .= $token->[4];
791: } elsif ($target eq 'tex') {
792: my $pre;
793: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
794: if ($align eq 'center') {
795: $pre='\begin{center}';
796: } elsif ($align eq 'left') {
797: $pre='\rlap{';
798: } elsif ($align eq 'right') {
799: $pre=' \hfill \llap{';
800: }
801: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
802: if (not defined $TeXsize) {$TeXsize="large";}
803: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
804: }
805: return $currentstring;
806: }
807:
808: sub end_h3 {
809: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
810: my $currentstring = '';
811: if ($target eq 'web' || $target eq 'webgrade') {
812: $currentstring .= $token->[2];
813: } elsif ($target eq 'tex') {
814: my $post='\vskip 0 mm ';
815: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
816: if ($align eq 'center') {
817: $post='\end{center}';
818: } elsif ($align eq 'left') {
819: $post='} \hfill'.'\vskip 0 mm ';
820: } elsif ($align eq 'right') {
821: $post='}'.'\vskip 0 mm ';
822: }
823: $currentstring .= '}}'.$post;
824: }
825: return $currentstring;
826: }
827:
828: #-- <h4> tag
829: sub start_h4 {
830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
831: my $currentstring = &end_p(); # Close off any prior para.
832: if ($target eq 'web' || $target eq 'webgrade') {
833: $currentstring .= $token->[4];
834: } elsif ($target eq 'tex') {
835: my $pre;
836: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
837: if ($align eq 'center') {
838: $pre='\begin{center}';
839: } elsif ($align eq 'left') {
840: $pre='\rlap{';
841: } elsif ($align eq 'right') {
842: $pre=' \hfill \llap{';
843: }
844: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
845: if (not defined $TeXsize) {$TeXsize="large";}
846: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
847: }
848: return $currentstring;
849: }
850:
851: sub end_h4 {
852: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
853: my $currentstring = '';
854: if ($target eq 'web' || $target eq 'webgrade') {
855: $currentstring .= $token->[2];
856: } elsif ($target eq 'tex') {
857: my $post='\vskip 0 mm ';
858: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
859: if ($align eq 'center') {
860: $post='\end{center}';
861: } elsif ($align eq 'left') {
862: $post='} \hfill'.'\vskip 0 mm ';
863: } elsif ($align eq 'right') {
864: $post='}'.'\vskip 0 mm ';
865: }
866: $currentstring .= '}}'.$post;
867: }
868: return $currentstring;
869: }
870:
871: #-- <h5> tag
872: sub start_h5 {
873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
874: my $currentstring = &end_p(); # Close off any prior paras.
875: if ($target eq 'web' || $target eq 'webgrade') {
876: $currentstring .= $token->[4];
877: } elsif ($target eq 'tex') {
878: my $pre;
879: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
880: if ($align eq 'center') {
881: $pre='\begin{center}';
882: } elsif ($align eq 'left') {
883: $pre='\rlap{';
884: } elsif ($align eq 'right') {
885: $pre=' \hfill \llap{';
886: }
887: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
888: if (not defined $TeXsize) {$TeXsize="large";}
889: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
890: }
891: return $currentstring;
892: }
893:
894: sub end_h5 {
895: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
896: my $currentstring = '';
897: if ($target eq 'web' || $target eq 'webgrade') {
898: $currentstring .= $token->[2];
899: } elsif ($target eq 'tex') {
900: my $post='\vskip 0 mm ';
901: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
902: if ($align eq 'center') {
903: $post='\end{center}';
904: } elsif ($align eq 'left') {
905: $post='} \hfill'.'\vskip 0 mm ';
906: } elsif ($align eq 'right') {
907: $post='}'.'\vskip 0 mm ';
908: }
909: $currentstring .= '}}'.$post;
910: }
911: return $currentstring;
912: }
913:
914: #-- <h6> tag
915: sub start_h6 {
916: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
917: my $currentstring = &end_p(); # Close off any prior paras.
918: if ($target eq 'web' || $target eq 'webgrade') {
919: $currentstring .= $token->[4];
920: } elsif ($target eq 'tex') {
921: my $pre;
922: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
923: if ($align eq 'center') {
924: $pre='\begin{center}';
925: } elsif ($align eq 'left') {
926: $pre='\rlap{';
927: } elsif ($align eq 'right') {
928: $pre=' \hfill \llap{';
929: }
930: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
931: if (not defined $TeXsize) {$TeXsize="large";}
932: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
933: }
934: return $currentstring;
935: }
936:
937: sub end_h6 {
938: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
939: my $currentstring = '';
940: if ($target eq 'web' || $target eq 'webgrade') {
941: $currentstring .= $token->[2];
942: } elsif ($target eq 'tex') {
943: my $post='\vskip 0 mm ';
944: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
945: if ($align eq 'center') {
946: $post='\end{center}';
947: } elsif ($align eq 'left') {
948: $post='} \hfill'.'\vskip 0 mm ';
949: } elsif ($align eq 'right') {
950: $post='}'.'\vskip 0 mm ';
951: }
952: $currentstring .= '}}'.$post;
953: }
954: return $currentstring;
955: }
956:
957: #--- <cite> tag (end tag required)
958: sub start_cite {
959: my ($target,$token) = @_;
960: my $currentstring = '';
961: if ($target eq 'web' || $target eq 'webgrade') {
962: $currentstring .= $token->[4];
963: } elsif ($target eq 'tex') {
964: $currentstring .= '\textit{';
965: }
966: return $currentstring;
967: }
968:
969: sub end_cite {
970: my ($target,$token) = @_;
971: my $currentstring = '';
972: if ($target eq 'web' || $target eq 'webgrade') {
973: $currentstring .= $token->[2];
974: } elsif ($target eq 'tex') {
975: $currentstring .= '}';
976: }
977: return $currentstring;
978: }
979:
980: #-- <i> tag (end tag required)
981: sub start_i {
982: my ($target,$token) = @_;
983: my $currentstring = '';
984: if ($target eq 'web' || $target eq 'webgrade') {
985: $currentstring .= $token->[4];
986: } elsif ($target eq 'tex') {
987: $currentstring .= '\textit{';
988: }
989: return $currentstring;
990: }
991:
992: sub end_i {
993: my ($target,$token) = @_;
994: my $currentstring = '';
995: if ($target eq 'web' || $target eq 'webgrade') {
996: $currentstring .= $token->[2];
997: } elsif ($target eq 'tex') {
998: $currentstring .= '}';
999: }
1000: return $currentstring;
1001: }
1002:
1003: #-- <address> tag (end tag required)
1004: sub start_address {
1005: my ($target,$token) = @_;
1006: my $currentstring = '';
1007: if ($target eq 'web' || $target eq 'webgrade') {
1008: $currentstring .= $token->[4];
1009: } elsif ($target eq 'tex') {
1010: $currentstring .= '\textit{';
1011: }
1012: return $currentstring;
1013: }
1014:
1015: sub end_address {
1016: my ($target,$token) = @_;
1017: my $currentstring = '';
1018: if ($target eq 'web' || $target eq 'webgrade') {
1019: $currentstring .= $token->[2];
1020: } elsif ($target eq 'tex') {
1021: $currentstring .= '}';
1022: }
1023: return $currentstring;
1024: }
1025:
1026: #-- <dfn> tag (end tag required)
1027: sub start_dfn {
1028: my ($target,$token) = @_;
1029: my $currentstring = '';
1030: if ($target eq 'web' || $target eq 'webgrade') {
1031: $currentstring .= $token->[4];
1032: } elsif ($target eq 'tex') {
1033: $currentstring .= '\textit{';
1034: }
1035: return $currentstring;
1036: }
1037:
1038: sub end_dfn {
1039: my ($target,$token) = @_;
1040: my $currentstring = '';
1041: if ($target eq 'web' || $target eq 'webgrade') {
1042: $currentstring .= $token->[2];
1043: } elsif ($target eq 'tex') {
1044: $currentstring .= '}';
1045: }
1046: return $currentstring;
1047: }
1048:
1049: #-- <tt> tag (end tag required)
1050: sub start_tt {
1051: my ($target,$token) = @_;
1052: my $currentstring = '';
1053: if ($target eq 'web' || $target eq 'webgrade') {
1054: $currentstring .= $token->[4];
1055: } elsif ($target eq 'tex') {
1056: $currentstring .= '\texttt{';
1057: }
1058: return $currentstring;
1059: }
1060:
1061: sub end_tt {
1062: my ($target,$token) = @_;
1063: my $currentstring = '';
1064: if ($target eq 'web' || $target eq 'webgrade') {
1065: $currentstring .= $token->[2];
1066: } elsif ($target eq 'tex') {
1067: $currentstring .= '}';
1068: }
1069: return $currentstring;
1070: }
1071:
1072: #-- <kbd> tag (end tag required)
1073: sub start_kbd {
1074: my ($target,$token) = @_;
1075: my $currentstring = '';
1076: if ($target eq 'web' || $target eq 'webgrade') {
1077: $currentstring .= $token->[4];
1078: } elsif ($target eq 'tex') {
1079: $currentstring .= '\texttt{';
1080: }
1081: return $currentstring;
1082: }
1083:
1084: sub end_kbd {
1085: my ($target,$token) = @_;
1086: my $currentstring = '';
1087: if ($target eq 'web' || $target eq 'webgrade') {
1088: $currentstring .= $token->[2];
1089: } elsif ($target eq 'tex') {
1090: $currentstring .= '}';
1091: }
1092: return $currentstring;
1093: }
1094:
1095: #-- <code> tag (end tag required)
1096: sub start_code {
1097: my ($target,$token) = @_;
1098: my $currentstring = '';
1099: if ($target eq 'web' || $target eq 'webgrade') {
1100: $currentstring .= $token->[4];
1101: } elsif ($target eq 'tex') {
1102: $currentstring .= '\texttt{';
1103: }
1104: return $currentstring;
1105: }
1106:
1107: sub end_code {
1108: my ($target,$token) = @_;
1109: my $currentstring = '';
1110: if ($target eq 'web' || $target eq 'webgrade') {
1111: $currentstring .= $token->[2];
1112: } elsif ($target eq 'tex') {
1113: $currentstring .= '}';
1114: }
1115: return $currentstring;
1116: }
1117:
1118: #-- <em> tag (end tag required)
1119: sub start_em {
1120: my ($target,$token) = @_;
1121: my $currentstring = '';
1122: if ($target eq 'web' || $target eq 'webgrade') {
1123: $currentstring .= $token->[4];
1124: } elsif ($target eq 'tex') {
1125: $currentstring .= '\emph{';
1126: }
1127: return $currentstring;
1128: }
1129:
1130: sub end_em {
1131: my ($target,$token) = @_;
1132: my $currentstring = '';
1133: if ($target eq 'web' || $target eq 'webgrade') {
1134: $currentstring .= $token->[2];
1135: } elsif ($target eq 'tex') {
1136: $currentstring .= '}';
1137: }
1138: return $currentstring;
1139: }
1140:
1141: #-- <q> tag (end tag required)
1142: sub start_q {
1143: my ($target,$token) = @_;
1144: my $currentstring = '';
1145: if ($target eq 'web' || $target eq 'webgrade') {
1146: $currentstring .= $token->[4];
1147: } elsif ($target eq 'tex') {
1148: $currentstring .= '\emph{';
1149: }
1150: return $currentstring;
1151: }
1152:
1153: sub end_q {
1154: my ($target,$token) = @_;
1155: my $currentstring = '';
1156: if ($target eq 'web' || $target eq 'webgrade') {
1157: $currentstring .= $token->[2];
1158: } elsif ($target eq 'tex') {
1159: $currentstring .= '}';
1160: }
1161: return $currentstring;
1162: }
1163:
1164: # <p> is a bit strange since it does not require a closing </p>
1165: # However in latex, we must often output closing stuff to end
1166: # environments and {}'s etc. Therefore we do all the work
1167: # of figuring out the ending strings in the start tag processing,
1168: # and provide a mechanism to output the stop text external
1169: # to tag processing.
1170: #
1171: {
1172:
1173: my $closing_string = ''; # String required to close <p>
1174:
1175: # Some tags are <p> fragile meaning that <p> inside of them
1176: # does not work within TeX mode. This is managed via the
1177: # counter below:
1178: #
1179:
1180: my $para_disabled = 0;
1181:
1182: sub disable_para {
1183: $para_disabled++;
1184: }
1185: sub enable_para {
1186: $para_disabled--;
1187: }
1188:
1189:
1190: #-- <p> tag (end tag optional)
1191: #optional attribute - align="center|left|right"
1192: sub start_p {
1193: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1194: my $currentstring = '';
1195: if ($target eq 'web' || $target eq 'webgrade') {
1196: $currentstring .= &end_p(); # close off prior para if in progress.
1197: $currentstring .= $token->[4];
1198: if (! ($currentstring =~ /\//)) {
1199: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1200: }
1201: } elsif ($target eq 'tex' && !$para_disabled) {
1202:
1203: $currentstring .= &end_p(); # close off prior para if in progress.
1204: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1205: if ($align eq 'center') {
1206: $currentstring .='\begin{center}\par ';
1207: $closing_string = '\end{center}';
1208: if (&is_inside_of($tagstack, "table")) {
1209: $currentstring = ¢er_correction().$currentstring;
1210: }
1211: } elsif ($align eq 'right') {
1212: $currentstring.="\n".'{\flushright ';
1213: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1214: $closing_string= "}\n";
1215: } elsif ($align eq 'left') {
1216: $currentstring.= "\n".'{\flushleft ';
1217: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1218: $closing_string = "}\n";
1219: } else {
1220: $currentstring.='\par ';
1221: if (&is_inside_of($tagstack, 'table')) {
1222: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1223: } else {
1224: $closing_string = '\strut\\\\\strut ';
1225: }
1226: }
1227:
1228: }
1229: return $currentstring;
1230: }
1231: #
1232: # End paragraph processing just requires that we output the
1233: # closing string that was saved and blank it.
1234: sub end_p {
1235: # Note only 'tex' mode uses disable_para and enable_para
1236: # so we don't need to know the target in the check below:
1237:
1238: if (!$para_disabled) {
1239: my $current_string = $closing_string;
1240: $closing_string = ''; # Not in a para anymore.
1241: return $current_string;
1242: } else {
1243: return '';
1244: }
1245:
1246: }
1247: }
1248: #-- <br> tag (end tag forbidden)
1249: sub start_br {
1250: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1251: my $currentstring = '';
1252: if ($target eq 'web' || $target eq 'webgrade') {
1253: $currentstring .= $token->[4];
1254: } elsif ($target eq 'tex') {
1255: my @tempo=@$tagstack;
1256: my $signal=0;
1257: # Not going to factor this to is_inside_of since that would require
1258: # multiple stack traversals.
1259: #
1260: for (my $i=$#tempo;$i>=0;$i--) {
1261: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1262: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1263: $signal=1;
1264: }
1265: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1266: $signal = 1;
1267: }
1268: }
1269: if ($signal != 1) {
1270: $currentstring .= '\strut \\\\ \strut ';
1271: }
1272:
1273: }
1274: return $currentstring;
1275: }
1276:
1277: sub end_br {
1278: my ($target,$token) = @_;
1279: my $currentstring = '';
1280: if ($target eq 'web' || $target eq 'webgrade') {
1281: $currentstring .= $token->[2];
1282: }
1283: return $currentstring;
1284: }
1285:
1286: #-- <big> tag (end tag required)
1287: sub start_big {
1288: my ($target,$token) = @_;
1289: my $currentstring = '';
1290: if ($target eq 'web' || $target eq 'webgrade') {
1291: $currentstring .= $token->[4];
1292: } elsif ($target eq 'tex') {
1293: $currentstring .= '{\large ';
1294: }
1295: return $currentstring;
1296: }
1297:
1298: sub end_big {
1299: my ($target,$token) = @_;
1300: my $currentstring = '';
1301: if ($target eq 'web' || $target eq 'webgrade') {
1302: $currentstring .= $token->[2];
1303: } elsif ($target eq 'tex') {
1304: $currentstring .= '}';
1305: }
1306: return $currentstring;
1307: }
1308:
1309: #-- <small> tag (end tag required)
1310: sub start_small {
1311: my ($target,$token) = @_;
1312: my $currentstring = '';
1313: if ($target eq 'web' || $target eq 'webgrade') {
1314: $currentstring .= $token->[4];
1315: } elsif ($target eq 'tex') {
1316: $currentstring .= '{\footnotesize ';
1317: }
1318: return $currentstring;
1319: }
1320:
1321: sub end_small {
1322: my ($target,$token) = @_;
1323: my $currentstring = '';
1324: if ($target eq 'web' || $target eq 'webgrade') {
1325: $currentstring .= $token->[2];
1326: } elsif ($target eq 'tex') {
1327: $currentstring .= '}';
1328: }
1329: return $currentstring;
1330: }
1331:
1332: #-- <basefont> tag (end tag forbidden)
1333: sub start_basefont {
1334: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1335: my $currentstring = '';
1336: if ($target eq 'web' || $target eq 'webgrade') {
1337: $currentstring = $token->[4];
1338: } elsif ($target eq 'tex') {
1339: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1340: if (defined $basesize) {
1341: $currentstring = '{\\'.$basesize.' ';
1342: }
1343: }
1344: return $currentstring;
1345: }
1346:
1347: sub end_basefont {
1348: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1349: my $currentstring = '';
1350: if ($target eq 'web' || $target eq 'webgrade') {
1351: $currentstring = $token->[4];
1352: } elsif ($target eq 'tex') {
1353: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1354: if (defined $basesize) {
1355: $currentstring = '}';
1356: }
1357: }
1358: return $currentstring;
1359: }
1360:
1361: #-- <font> tag (end tag required)
1362: sub start_font {
1363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1364: my $currentstring = '';
1365: if ($target eq 'web' || $target eq 'webgrade') {
1366: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1367: $currentstring = $token->[4];
1368: } elsif ($target eq 'tex') {
1369: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1370: if (defined $fontsize) {
1371: $currentstring = '{\\'.$fontsize.' ';
1372: }
1373: }
1374: return $currentstring;
1375: }
1376:
1377: sub end_font {
1378: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1379: my $currentstring = '';
1380: if ($target eq 'web' || $target eq 'webgrade') {
1381: $currentstring = $token->[2];
1382: } elsif ($target eq 'tex') {
1383: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1384: if (defined $fontsize) {
1385: $currentstring = '}';
1386: }
1387: }
1388: return $currentstring;
1389: }
1390:
1391: #-- <strike> tag (end tag required)
1392: sub start_strike {
1393: my ($target,$token) = @_;
1394: my $currentstring = '';
1395: if ($target eq 'web' || $target eq 'webgrade') {
1396: $currentstring .= $token->[4];
1397: } elsif ($target eq 'tex') {
1398: &Apache::lonxml::startredirection();
1399: }
1400: return $currentstring;
1401: }
1402:
1403: sub end_strike {
1404: my ($target,$token) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web' || $target eq 'webgrade') {
1407: $currentstring .= $token->[2];
1408: } elsif ($target eq 'tex') {
1409: $currentstring=&Apache::lonxml::endredirection();
1410: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1411: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1412: $currentstring=~s/(\S)\s*$/$1\}/;
1413: }
1414: return $currentstring;
1415: }
1416:
1417: #-- <s> tag (end tag required)
1418: sub start_s {
1419: my ($target,$token) = @_;
1420: my $currentstring = '';
1421: if ($target eq 'web' || $target eq 'webgrade') {
1422: $currentstring .= $token->[4];
1423: } elsif ($target eq 'tex') {
1424: &Apache::lonxml::startredirection();
1425: }
1426: return $currentstring;
1427: }
1428:
1429: sub end_s {
1430: my ($target,$token) = @_;
1431: my $currentstring = '';
1432: if ($target eq 'web' || $target eq 'webgrade') {
1433: $currentstring .= $token->[2];
1434: } elsif ($target eq 'tex') {
1435: $currentstring=&Apache::lonxml::endredirection();
1436: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1437: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1438: $currentstring=~s/(\S)\s*$/$1\}/;
1439: }
1440: return $currentstring;
1441: }
1442:
1443: #-- <sub> tag (end tag required)
1444: sub start_sub {
1445: my ($target,$token) = @_;
1446: my $currentstring = '';
1447: if ($target eq 'web' || $target eq 'webgrade') {
1448: $currentstring .= $token->[4];
1449: } elsif ($target eq 'tex') {
1450: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1451: }
1452: return $currentstring;
1453: }
1454:
1455: sub end_sub {
1456: my ($target,$token) = @_;
1457: my $currentstring = '';
1458: if ($target eq 'web' || $target eq 'webgrade') {
1459: $currentstring .= $token->[2];
1460: } elsif ($target eq 'tex') {
1461: $currentstring .= '}}';
1462: }
1463: return $currentstring;
1464: }
1465:
1466: #-- <sup> tag (end tag required)
1467: sub start_sup {
1468: my ($target,$token) = @_;
1469: my $currentstring = '';
1470: if ($target eq 'web' || $target eq 'webgrade') {
1471: $currentstring .= $token->[4];
1472: } elsif ($target eq 'tex') {
1473: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1474: }
1475: return $currentstring;
1476: }
1477:
1478: sub end_sup {
1479: my ($target,$token) = @_;
1480: my $currentstring = '';
1481: if ($target eq 'web' || $target eq 'webgrade') {
1482: $currentstring .= $token->[2];
1483: } elsif ($target eq 'tex') {
1484: $currentstring .= '}}';
1485: }
1486: return $currentstring;
1487: }
1488:
1489: #-- <hr> tag (end tag forbidden)
1490: sub start_hr {
1491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1492: my $currentstring = &end_p(); # End enclosing para.
1493: if ($target eq 'web' || $target eq 'webgrade') {
1494: $currentstring .= $token->[4];
1495: } elsif ($target eq 'tex') {
1496:
1497: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1498: #
1499: my $restart_sub = 0;
1500: my $restart_sup = 0;
1501:
1502: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1503: # using the start_ stop_ functions.. those tags only care about
1504: # $target.
1505:
1506: if (&is_inside_of($tagstack, "sub")) {
1507: $restart_sub = 1;
1508: $currentstring .= &end_sub($target, $token, $tagstack,
1509: $parstack, $parser, $safeeval);
1510: }
1511: if (&is_inside_of($tagstack, "sup")) {
1512: $restart_sup = 1;
1513: $currentstring .= &end_sup($target, $token, $tagstack,
1514: $parstack, $parser, $safeeval);
1515: }
1516:
1517: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1518: if (defined $LaTeXwidth) {
1519: if ($LaTeXwidth=~/^%/) {
1520: substr($LaTeXwidth,0,1)='';
1521: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1522: }
1523: } else {
1524: $LaTeXwidth ='0.9\textwidth';
1525: }
1526: my ($pre,$post);
1527: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1528: if (($align eq 'center') || (not defined $align)) {
1529: $pre=''; $post='';
1530: } elsif ($align eq 'left') {
1531: $pre='\rlap{'; $post='} \hfill';
1532: } elsif ($align eq 'right') {
1533: $pre=' \hfill \llap{'; $post='}';
1534: }
1535: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1536: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1537: # Turn stuff back on that we can't be inside of.
1538:
1539: if ($restart_sub) {
1540: $currentstring .= &start_sub($target, $token, $tagstack,
1541: $parstack, $parser, $safeeval);
1542: }
1543: if ($restart_sup) {
1544: $currentstring .= &start_sup($target, $token, $tagstack,
1545: $parstack, $parser, $safeeval);
1546: }
1547: }
1548: return $currentstring;
1549: }
1550:
1551: sub end_hr {
1552: my ($target,$token) = @_;
1553: my $currentstring = '';
1554: if ($target eq 'web' || $target eq 'webgrade') {
1555: $currentstring .= $token->[2];
1556: }
1557: return $currentstring;
1558: }
1559:
1560: #-- <div> tag (end tag required)
1561: {
1562:
1563: # Since div can be nested, the stack below is used
1564: # in 'tex' mode to store the ending strings
1565: # for the div stack.
1566:
1567: my @div_end_stack;
1568:
1569: sub start_div {
1570: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1571: my $currentstring = &end_p(); # Close enclosing para.
1572: if ($target eq 'web' || $target eq 'webgrade') {
1573: $currentstring .= $token->[4];
1574: }
1575: if ($target eq 'tex') {
1576: # 4 possible alignments: left, right, center, and -missing-.
1577: # If inside a table row, we must let the table logic
1578: # do the alignment, however.
1579: #
1580:
1581: my $endstring = '';
1582:
1583: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1584: $safeeval, undef, 1));
1585: if ($align eq 'center') {
1586: $currentstring .= '\begin{center}';
1587: $endstring = '\end{center}';
1588: if (&is_inside_of($tagstack, "table")) {
1589: $currentstring = ¢er_correction().$currentstring;
1590: $endstring .= ¢er_end_correction();
1591: }
1592: }
1593: elsif ($align eq 'right') {
1594: $currentstring .= '\begin{flushright}';
1595: $endstring .= '\end{flushright}';
1596: } elsif ($align eq 'left') {
1597: $currentstring .= '\begin{flushleft}';
1598: $endstring = '\end{flushleft}';
1599: } else {
1600:
1601: }
1602: $currentstring .= "\n"; # For human readability.
1603: $endstring = "\n$endstring\n"; # For human readability
1604: push(@div_end_stack, $endstring);
1605: }
1606: return $currentstring;
1607: }
1608:
1609: sub end_div {
1610: my ($target,$token) = @_;
1611: my $currentstring = '';
1612: if ($target eq 'web' || $target eq 'webgrade') {
1613: $currentstring .= $token->[2];
1614: }
1615: if ($target eq 'tex') {
1616: my $endstring = pop @div_end_stack;
1617: $currentstring .= $endstring;
1618: }
1619: return $currentstring;
1620: }
1621: }
1622:
1623: #-- <a> tag (end tag required)
1624: sub start_a {
1625: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1626: my $currentstring = '';
1627: if ($target eq 'web' || $target eq 'webgrade') {
1628: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1629: undef,1);
1630: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1631: if ($href =~ /\S/) {
1632: if ($href !~ m{^https?://}) {
1633: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1634: my $linkurl;
1635: if ($href =~ m{^/uploaded/}) {
1636: $linkurl = $href;
1637: } elsif ($href =~ m{^[^/]}) {
1638: my $path = $url;
1639: $path =~ s{[^/]*$}{};
1640: $linkurl = $path.$href;
1641: }
1642: if ($linkurl =~ m{^/uploaded/}) {
1643: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1644: if (&Apache::lonnet::is_on_map($url)) {
1645: &Apache::lonxml::extlink($linkurl);
1646: }
1647: }
1648: }
1649: }
1650: }
1651: }
1652: return $currentstring;
1653: }
1654:
1655: sub end_a {
1656: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1657: my $currentstring = '';
1658: if ($target eq 'web' || $target eq 'webgrade') {
1659: $currentstring .= $token->[2];
1660: }
1661: if ($target eq 'tex') {
1662: my $href =
1663: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1664: my $name =
1665: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1666: my $uriprint =
1667: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1668: my $anchorprint =
1669: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1670: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1671: $href =~ s/([^\\])%/$1\\\%/g;
1672: # Substitute special symbols... and allow line breaks at each /
1673: #
1674: $href = &Apache::lonxml::latex_special_symbols($href);
1675: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1676: $currentstring .= ' ({\tt URI:'.$href.'})';
1677: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1678: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1679: } else {
1680: $currentstring.='';
1681: }
1682: }
1683: return $currentstring;
1684: }
1685:
1686: #-- <li> tag (end tag optional)
1687: sub start_li {
1688: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1689: my $currentstring = '';
1690: if ($target eq 'web' || $target eq 'webgrade') {
1691: $currentstring = $token->[4];
1692: } elsif ($target eq 'tex') {
1693: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1694: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1695: #FIXME need to support types i and I
1696: if ($type=~/disc/) {
1697: $currentstring .= ' \item[$\bullet$] ';
1698: } elsif ($type=~/circle/) {
1699: $currentstring .= ' \item[$\circ$] ';
1700: } elsif ($type=~/square/) {
1701: $currentstring .= ' \item[$\diamond$] ';
1702: } elsif ($type eq '1') {
1703: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1704: } elsif ($type eq 'A') {
1705: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1706: } elsif ($type eq 'a') {
1707: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1708: } elsif ($value ne '') {
1709: $currentstring .= ' \item['.$value.'] ';
1710: } else {
1711: $currentstring .= ' \item ';
1712: }
1713: $Apache::londefdef::list_index++;
1714: }
1715: return $currentstring;
1716: }
1717:
1718: sub end_li {
1719: my ($target,$token) = @_;
1720: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1721: if ($target eq 'web' || $target eq 'webgrade') {
1722: $currentstring .= $token->[2];
1723: }
1724: return $currentstring;
1725: }
1726:
1727: #-- <u> tag (end tag required)
1728: sub start_u {
1729: my ($target,$token) = @_;
1730: my $currentstring = '';
1731: if ($target eq 'web' || $target eq 'webgrade') {
1732: $currentstring .= $token->[4];
1733: } elsif ($target eq 'tex') {
1734: &Apache::lonxml::startredirection();
1735: }
1736: return $currentstring;
1737: }
1738:
1739: sub end_u {
1740: my ($target,$token) = @_;
1741: my $currentstring = '';
1742: if ($target eq 'web' || $target eq 'webgrade') {
1743: $currentstring .= $token->[2];
1744: } elsif ($target eq 'tex') {
1745: $currentstring=&Apache::lonxml::endredirection();
1746: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1747: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1748: $currentstring=~s/(\S)\s*$/$1\}/;
1749: }
1750: return $currentstring;
1751: }
1752:
1753: #-- <ul> tag (end tag required)
1754: sub start_ul {
1755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1756: my $currentstring = &end_p(); # Close off enclosing list.
1757: if ($target eq 'web' || $target eq 'webgrade') {
1758: $currentstring .= $token->[4];
1759: } elsif ($target eq 'tex') {
1760: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1761: $Apache::londefdef::list_index=0;
1762: if ($TeXtype eq 'disc') {
1763: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1764: '\renewcommand{\labelitemii}{$\bullet$}'.
1765: '\renewcommand{\labelitemiii}{$\bullet$}'.
1766: '\renewcommand{\labelitemiv}{$\bullet$}';
1767: } elsif ($TeXtype eq 'circle') {
1768: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1769: '\renewcommand{\labelitemii}{$\circ$}'.
1770: '\renewcommand{\labelitemiii}{$\circ$}'.
1771: '\renewcommand{\labelitemiv}{$\circ$}';
1772: } elsif ($TeXtype eq 'square') {
1773: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1774: '\renewcommand{\labelitemii}{$\diamond$}'.
1775: '\renewcommand{\labelitemiii}{$\diamond$}'.
1776: '\renewcommand{\labelitemiv}{$\diamond$}';
1777: }
1778: $currentstring .= '\strut \begin{itemize}';
1779: }
1780: return $currentstring;
1781: }
1782:
1783: sub end_ul {
1784: my ($target,$token) = @_;
1785: my $currentstring = '';
1786: if ($target eq 'web' || $target eq 'webgrade') {
1787: $currentstring = $token->[2];
1788: } elsif ($target eq 'tex') {
1789: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1790: '\renewcommand{\labelitemii}{$\bullet$}'.
1791: '\renewcommand{\labelitemiii}{$\bullet$}'.
1792: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1793: }
1794: return $currentstring;
1795: }
1796:
1797: #-- <menu> tag (end tag required)
1798: sub start_menu {
1799: my ($target,$token) = @_;
1800: my $currentstring = '';
1801: if ($target eq 'web' || $target eq 'webgrade') {
1802: $currentstring = $token->[4];
1803: } elsif ($target eq 'tex') {
1804: $currentstring = " \\begin{itemize} ";
1805: }
1806: return $currentstring;
1807: }
1808:
1809: sub end_menu {
1810: my ($target,$token) = @_;
1811: my $currentstring = '';
1812: if ($target eq 'web' || $target eq 'webgrade') {
1813: $currentstring = $token->[2];
1814: } elsif ($target eq 'tex') {
1815: $currentstring = " \\end{itemize}";
1816: }
1817: return $currentstring;
1818: }
1819:
1820: #-- <dir> tag (end tag required)
1821: sub start_dir {
1822: my ($target,$token) = @_;
1823: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1824: if ($target eq 'web' || $target eq 'webgrade') {
1825: $currentstring .= $token->[4];
1826: } elsif ($target eq 'tex') {
1827: $currentstring .= " \\begin{itemize} ";
1828: }
1829: return $currentstring;
1830: }
1831:
1832: sub end_dir {
1833: my ($target,$token) = @_;
1834: my $currentstring = '';
1835: if ($target eq 'web' || $target eq 'webgrade') {
1836: $currentstring = $token->[2];
1837: } elsif ($target eq 'tex') {
1838: $currentstring = " \\end{itemize}";
1839: }
1840: return $currentstring;
1841: }
1842:
1843: #-- <ol> tag (end tag required)
1844: sub start_ol {
1845: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1846: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1847: if ($target eq 'web' || $target eq 'webgrade') {
1848: $currentstring .= $token->[4];
1849: } elsif ($target eq 'tex') {
1850: $Apache::londefdef::list_index=0;
1851: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1852: if ($type eq '1') {
1853: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1854: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1855: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1856: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1857: } elsif ($type eq 'A') {
1858: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1859: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1860: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1861: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1862: } elsif ($type eq 'a') {
1863: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1864: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1865: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1866: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1867: } elsif ($type eq 'i') {
1868: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1869: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1870: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1871: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1872: } elsif ($type eq 'I') {
1873: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1874: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1875: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1876: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1877: }
1878: $currentstring .= '\strut \begin{enumerate}';
1879: }
1880: return $currentstring;
1881: }
1882:
1883: sub end_ol {
1884: my ($target,$token) = @_;
1885: my $currentstring = '';
1886: if ($target eq 'web' || $target eq 'webgrade') {
1887: $currentstring = $token->[2];
1888: } elsif ($target eq 'tex') {
1889: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1890: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1891: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1892: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1893: }
1894: return $currentstring;
1895: }
1896:
1897: #-- <dl> tag (end tag required)
1898: sub start_dl {
1899: my ($target,$token) = @_;
1900: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1901: if ($target eq 'web' || $target eq 'webgrade') {
1902: $currentstring .= $token->[4];
1903: } elsif ($target eq 'tex') {
1904: $currentstring .= '\begin{description}';
1905: $Apache::londefdef::DL++;
1906: push(@Apache::londefdef::description,[]);
1907: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1908: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1909: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1910: }
1911: return $currentstring;
1912: }
1913:
1914: sub end_dl {
1915: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1916: my $currentstring = '';
1917: if ($target eq 'web' || $target eq 'webgrade') {
1918: $currentstring = $token->[2];
1919: } elsif ($target eq 'tex') {
1920: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1921: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1922: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1923: $currentstring.=' '.$element.' ';
1924: }
1925: pop(@Apache::londefdef::description);
1926: $currentstring.='\end{description}';
1927: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1928: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1929: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1930: $Apache::londefdef::DL--;
1931: }
1932: return $currentstring;
1933: }
1934:
1935: #-- <dt> tag (end tag optional)
1936: sub start_dt {
1937: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1938: my $currentstring='';
1939: if ($target eq 'web' || $target eq 'webgrade') {
1940: $currentstring = $token->[4];
1941: } elsif ($target eq 'tex') {
1942: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1943: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1944: &Apache::lonxml::startredirection();
1945: $Apache::londefdef::DT[-1]++;
1946: $Apache::londefdef::seenDT[-1]=1;
1947: }
1948: return $currentstring;
1949: }
1950:
1951: sub end_dt {
1952: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1953: my $currentstring = '';
1954: if ($target eq 'web' || $target eq 'webgrade') {
1955: $currentstring = $token->[2];
1956: } elsif ($target eq 'tex') {
1957: if ($Apache::londefdef::DT[-1]) {
1958: my $data=&item_cleanup();
1959: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1960: $Apache::londefdef::DT[-1]--;
1961: }
1962: }
1963: return $currentstring;
1964: }
1965:
1966: sub item_cleanup {
1967: my $item=&Apache::lonxml::endredirection();
1968: $item=~s/\\begin{center}//g;
1969: $item=~s/\\end{center}//g;
1970: return $item;
1971: }
1972:
1973: #-- <dd> tag (end tag optional)
1974: sub start_dd {
1975: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1976: my $currentstring = '';
1977: if ($target eq 'web' || $target eq 'webgrade') {
1978: $currentstring = $token->[4];
1979: } elsif ($target eq 'tex') {
1980: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1981: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1982: if (!$Apache::londefdef::seenDT[-1]) {
1983: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1984: }
1985: push(@{$Apache::londefdef::description[-1]},'');
1986: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1987: $Apache::londefdef::DD[-1]++;
1988: &Apache::lonxml::startredirection();
1989: }
1990: return $currentstring;
1991: }
1992:
1993: sub end_dd {
1994: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1995: my $currentstring = '';
1996: if ($target eq 'web' || $target eq 'webgrade') {
1997: $currentstring = $token->[2];
1998: } elsif ($target eq 'tex') {
1999: $Apache::londefdef::description[-1]->[-1].=
2000: &Apache::lonxml::endredirection().' \vskip 0mm ';
2001: $Apache::londefdef::DD[-1]--;
2002: }
2003: return $currentstring;
2004: }
2005:
2006: #-- <table> tag (end tag required)
2007: # <table> also ends any prior <p> that is not closed.
2008: # but, unless I allow <p>'s to nest, that's the
2009: # only way I could think of to allow <p> in
2010: # <tr> <th> bodies
2011: #
2012: #list of supported attributes: border,width,TeXwidth,TeXtheme
2013: # align
2014: sub start_table {
2015: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2016: my $textwidth = '';
2017: my $currentstring = &end_p();
2018: if ($target eq 'web' || $target eq 'webgrade') {
2019: $currentstring .= $token->[4];
2020: } elsif ($target eq 'tex') {
2021: &disable_para(); # Can't have paras in a table.
2022:
2023:
2024: # New table code:
2025:
2026: # Get the parameters that we can do something about:
2027:
2028: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2029: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2030: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2031: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2032:
2033: # The only thing that needs any figuring out is the width.. and then only if it is
2034: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2035: #
2036:
2037: my $table = new Apache::lontable();
2038: if ($border ne '') {
2039: $table->table_border(1);
2040: $table->cell_border(1);
2041: }
2042: if ($theme ne '') {
2043: $table->theme($theme);
2044: }
2045: if ($align ne '') {
2046: $table->alignment($align);
2047: }
2048:
2049: # Missing width is most of page width
2050:
2051: if ($width eq "") {
2052: $width = '70%';
2053: }
2054:
2055: # If a percentage, need to calculate what this means in terms of
2056: # page width:
2057:
2058: if ($width =~ /%$/) {
2059: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2060: $width =~ s/%//;
2061: $width = $width * $textwidth / 100.0;
2062: $width .= " mm";
2063: $table->width($width);
2064: }
2065:
2066: push(@Apache::londefdef::table, $table);
2067: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2068:
2069: #--------------------------------------------------------
2070: # Old table code here.
2071: #--------------------------------------------------------
2072:
2073:
2074: if (0) {
2075: push(@Apache::londefdef::table, {});
2076: $Apache::londefdef::table[-1]{'row_number'} = -1;
2077: #maximum table's width (default coincides with text line length)
2078: if ($#Apache::londefdef::table==0) {
2079: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2080: $textwidth=~/(\d+\.?\d*)/;
2081: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2082: } else {
2083: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2084: #the maximum width of nested table is determined by LATeX width of parent cell
2085: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2086: } else {
2087: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2088: $textwidth=$Apache::londefdef::table[-2]{'width'};
2089: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2090: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2091: }
2092: }
2093: }
2094:
2095: # width either comes forced from the TeXwidth or the width parameters.
2096: # in either case it can be a percentage or absolute width.
2097: # in the width case we ignore absolute width
2098: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2099: if (!defined($TeXwidth)) {
2100: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2101: $safeeval,undef,1);
2102: if ($htmlwidth =~ /%/) {
2103: $TeXwidth = $htmlwidth;
2104: } else {
2105: $TeXwidth = $textwidth;
2106: }
2107: }
2108: # if the width is specified as a % it is converted to an absolute width.
2109: # otherwise.. just plugged right in the hash
2110:
2111: if ($TeXwidth=~/%/) {
2112: $TeXwidth=~/(\d+)/;
2113: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2114: } else {
2115: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2116: }
2117: # In the end, however the table width cannot be wider than $textwidth...
2118:
2119: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2120: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2121: }
2122: #table's border
2123: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2124: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2125: unless (defined $border) { $border = 0; }
2126: if ($border) {
2127: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2128: $Apache::londefdef::table[-1]{'vinc'} = '&';
2129: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2130: } else {
2131: $Apache::londefdef::table[-1]{'hinc'} = '';
2132: $Apache::londefdef::table[-1]{'vinc'} = '&';
2133: $Apache::londefdef::table[-1]{'vvinc'} = '';
2134: }
2135: if ($#Apache::londefdef::table==0) {
2136: # Note that \newline seems to destroy the alignment envs.
2137: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2138: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2139: }
2140: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2141: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2142: $Apache::londefdef::table[-1]{'objectlen'}=[];
2143: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2144: $Apache::londefdef::table[-1]{'maxlen'}=[];
2145: $Apache::londefdef::table[-1]{'minlen'}=[];
2146: $Apache::londefdef::table[-1]{'content'}=[];
2147: $Apache::londefdef::table[-1]{'align'}=[];
2148: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2149: }
2150:
2151: }
2152: return $currentstring;
2153: }
2154:
2155: sub end_table {
2156: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2157: my $currentstring = '';
2158: if ($target eq 'web' || $target eq 'webgrade') {
2159: $currentstring = $token->[2];
2160: } elsif ($target eq 'tex') {
2161:
2162:
2163: # New table code:
2164:
2165: my $table = pop(@Apache::londefdef::table);
2166: my $t = $table->generate();
2167: $currentstring = $t->generate_string();
2168: &enable_para();
2169: #--------------------------------------------------------------
2170: # Old table code:
2171: #--------------------------------------------------------------
2172:
2173: if (0) {
2174:
2175: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2176: my $inmemory = '';
2177: my $output = '';
2178: my $WARNING='';
2179: #width of columns from TeXwidth attributes
2180:
2181: # Protect against unbalanced </table> tag.
2182:
2183: if (scalar(@Apache::londefdef::table) > 0) {
2184:
2185: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2186: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2187: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2188: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2189: }
2190: }
2191: }
2192: #free space and number of empty columns
2193: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2194: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2195: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2196: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2197: $empty_columns++;
2198: } else {
2199: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2200: }
2201: }
2202:
2203: #boundaries for contents columns
2204: my @min_len=();#columns can not be narrower
2205: my @max_len=();#maximum length of column
2206: my $avg_max;
2207: my $avg_min;
2208: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2209: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2210: my ($localmin,$localmax)=(0,0);
2211: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2212: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2213: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2214: }
2215: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2216: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2217: }
2218: }
2219: push @min_len, $localmin;
2220: push @max_len, $localmax;
2221: $avg_max = $localmax + $avg_max;
2222: $avg_min = $localmin + $avg_min;
2223: }
2224: # Does not really matter what the average max/min are if there are no cols.
2225: # and this prevents div 0 in that case.
2226:
2227: if ($counter_cols != 0) {
2228: $avg_max = $avg_max/$counter_cols;
2229: $avg_min = $avg_min/$counter_cols;
2230: }
2231:
2232:
2233: # I don't think the below is needed.. but just in case:
2234:
2235: if ($avg_min > $avg_max) {
2236: my $temp = $avg_min;
2237: $avg_min = $avg_max;
2238: $avg_max = $temp;
2239: }
2240:
2241:
2242: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2243: my $localmin=0,;
2244: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2245: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2246: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2247: }
2248: }
2249: if ($max_len[$jn]<$localmin) {
2250: $max_len[$jn]=$localmin;
2251: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2252: }#object size is bigger
2253: if ($min_len[$jn]<$localmin) {
2254: $min_len[$jn]=$localmin;
2255: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2256: }#object size is bigger
2257: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2258: $min_len[$jn]=0;
2259: $max_len[$jn]=0;
2260: }
2261: # Spans seem to be really bothered by max/min = 0. So if we have one
2262: # make it an average joe max/min.
2263:
2264: if ($max_len[$jn] == 0) {
2265: $max_len[$jn] = $avg_max;
2266: }
2267: if ($min_len[$jn] == 0) {
2268: $min_len[$jn] = $avg_min;
2269: }
2270:
2271: }
2272: #final adjustment of column width
2273: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2274: my @adjust=();
2275: #step 1. adjustment by maximum value
2276: my $space_needed=0;
2277: for (my $jn=0;$jn<=$#max_len;$jn++) {
2278: $space_needed=$space_needed+$max_len[$jn];
2279: }
2280: if ($space_needed<=$available_space) {
2281:
2282: for (my $jn=0;$jn<=$#max_len;$jn++) {
2283: if ($fwidth[$jn]==0) {
2284: $fwidth[$jn]=$max_len[$jn];
2285: }
2286: }
2287: } else {
2288: #step 2. adjustment by minimum value (estimation)
2289: $space_needed=0;
2290: for (my $jn=0;$jn<=$#min_len;$jn++) {
2291: $space_needed+=$min_len[$jn];
2292: }
2293: if ($space_needed>$available_space) {
2294: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2295: for (my $jn=0;$jn<=$#max_len;$jn++) {
2296: if ($fwidth[$jn]==0) {
2297: $fwidth[$jn]=$min_len[$jn];
2298: }
2299: }
2300: #check if we have objects which can be scaled
2301: my $how_many_to_scale=0;
2302: my @to_scale=();
2303: for (my $jn=0;$jn<=$#max_len;$jn++) {
2304: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2305: $how_many_to_scale++;
2306: push @to_scale, $jn;
2307: }
2308: }
2309: if ($how_many_to_scale>0) {
2310: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2311: foreach my $jn (@to_scale) {
2312: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2313: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2314: if ($1 ne '') {
2315: my $current_length=&recalc($1);
2316: $current_length=~/(\d+\.?\d*)/;
2317: $current_length=$current_length-$space_to_adjust;
2318: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2319: }
2320: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2321: if ($1 ne '') {
2322: my $current_length=$1;
2323: $current_length=$current_length-$space_to_adjust;
2324: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2325: }
2326: }
2327: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2328: }
2329: }
2330: } else {
2331: #step 3. adjustment over minimal + corrections
2332: my $enlarge_coef=$available_space/$space_needed;
2333: my $acsessive=0;
2334: for (my $jn=0;$jn<=$#min_len;$jn++) {
2335: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2336: if ($adjust[$jn]>$max_len[$jn]) {
2337: $fwidth[$jn]=$max_len[$jn];
2338: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2339: $adjust[$jn]=0;
2340:
2341: }
2342: }
2343: if ($acsessive>0) {
2344: #we have an excess of space and can redistribute it
2345: my $notempty_columns=0;
2346: for (my $jn=0;$jn<=$#min_len;$jn++) {
2347: if ($adjust[$jn]!=0) {
2348: $notempty_columns++;
2349: }
2350: }
2351: my $per_column=$acsessive/$notempty_columns;
2352: for (my $jn=0;$jn<=$#min_len;$jn++) {
2353: if ($adjust[$jn]!=0) {
2354: $adjust[$jn]+=$per_column;
2355: $fwidth[$jn]=$adjust[$jn];
2356: }
2357: }
2358: } else {
2359: for (my $jn=0;$jn<=$#min_len;$jn++) {
2360: $fwidth[$jn]=$adjust[$jn];
2361: }
2362: }
2363: }
2364: }
2365: # use all available width or specified width as if not specified,
2366: # the specified width gets defaulted to the available width.
2367:
2368: my $current=0;
2369: for (my $i=0;$i<=$#fwidth;$i++) {
2370: $current+=$fwidth[$i];
2371: }
2372: if ($current == 0) {
2373: $current = $Apache::londefdef::table[-1]{'width'};
2374: }
2375: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2376: for (my $i=0;$i<=$#fwidth;$i++) {
2377: $fwidth[$i]*=$coef;
2378: }
2379: #removing of empty columns if allowed
2380: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2381: if ($permission eq 'yes') {
2382: my @cleaned_table=();
2383: my @cleaned_header=();
2384: my $colind=0;
2385: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2386: if ($fwidth[$jn]!=0) {
2387: #we need to copy column
2388: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2389: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2390: $cleaned_header[$colind]=$fwidth[$jn];
2391: }
2392: $colind++;
2393: }
2394: }
2395: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2396: @fwidth=@cleaned_header;
2397: }
2398:
2399:
2400: #construct header of the table
2401: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2402: for (my $in=0;$in<=$#fwidth;$in++) {
2403: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2404: }
2405: $header_of_table .= '}';
2406:
2407: #fill the table
2408: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2409: my $have_rowspan = 0;
2410: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2411:
2412: #-----------------------------------------------------------
2413: # I think this order of doing things will ensure that
2414: # single rowspan, columspan and combined row/colspans will
2415: # work correctly. LaTeX is delicate here.
2416: # RF.
2417:
2418: # Start a rowspan if necessary:
2419:
2420: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2421: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2422: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2423: #
2424: # Do the appropriate magic if this has a colspan
2425: #
2426:
2427: my $border_char = "";
2428: if ($border) {
2429: $border_char = "|";
2430: }
2431: my $spanwidth = 0;
2432: if ($colspan > 1) {
2433: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2434: $spanwidth += $fwidth[$spancol];
2435: }
2436: $output .= '\multicolumn{'.
2437: $colspan
2438: ."}";
2439: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2440: $output .= '{'.$border_char.'c'.$border_char.'}{';
2441: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2442: $output .= '{'.$border_char.'r'.$border_char.'}{';
2443: }
2444: else {
2445: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2446: }
2447:
2448: } else {
2449: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2450: }
2451:
2452: # Rowspan... if colspan is 1, and there's an alignment we'll need
2453: # to kick in a multicolumn in order to get the alignment spec.
2454: # this must precede the multirow or LaTex gets quite upset.
2455: # Naturally if colspan > 1 we've already done that above ^
2456: #
2457: my $multirow_aligned = 0;
2458: if ($rowspan > 1) {
2459: if ($colspan == 1) {
2460: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2461: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2462: $multirow_aligned = 1;
2463: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2464: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2465: $multirow_aligned = 1;
2466: }
2467: }
2468: $have_rowspan++;
2469: if ($multirow_aligned) {
2470: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2471: } else {
2472: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2473: }
2474:
2475: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2476: s{^\s*\\par\s*}{};
2477: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2478: s{\s*\\vskip\s*0pt\s*$}{};
2479:
2480: #
2481: # If we did not throw in a multicolumn to align, then add
2482: # an extra {
2483: # so we close correctly without having to keep additional state
2484: # around
2485: #
2486: if (!$multirow_aligned) {
2487: $output .= '{';
2488: }
2489: }
2490: if (($rowspan eq '^') || ($rowspan eq '_')) {
2491: $have_rowspan++;
2492: }
2493: #--------------------------------------------------------------
2494:
2495:
2496: # For right and center alignment of single cells.
2497: # we are going to use a multicolumn with a span of 1 to specify alignment.
2498: #
2499: if ($colspan == 1 && $rowspan == 1) {
2500: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2501: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2502: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2503: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2504: }
2505: }
2506:
2507: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2508:
2509: if (($colspan == 1 && $rowspan == 1) &&
2510: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2511: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2512: $output .= '}';
2513: }
2514:
2515: # Close off any open multirow:
2516:
2517: if ($rowspan > 1) {
2518: $output .= '}}';
2519: }
2520: # Close off the colspan...
2521: #
2522: if ($colspan > 1) {
2523: $output .= '}';
2524: $jn += $colspan-1; # Adjust for number of rows really left.
2525: }
2526: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2527: }
2528: # If have_rowspan > 0, and borders are on, then
2529: # we need to do more than put an \hline at the bottom of row.
2530: # we need to do the appropriate \cline to ensure that
2531: # the spanned rows don't have \hlines through them.
2532:
2533: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2534: $output .= ' \\\\ ';
2535: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2536: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2537: if ($rowspan ne "^") {
2538: if (($rowspan <= 1) || ($rowspan eq '_')) {
2539: my $column = $jn+1;
2540: $output .= '\cline{'.$column.'-'.$column.'} ';
2541: }
2542: }
2543: }
2544:
2545: } else {
2546: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2547: }
2548: }
2549: # Note that \newline destroys alignment env's produced by e.g. <div>
2550: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2551: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2552: if ($#Apache::londefdef::table > 0) {
2553: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2554: # Figure out max/and min width by summing us and then
2555: # apply that to the current column of the table we nest in
2556: # if it's larger than the current width or the current width
2557: # is undefined.
2558: #
2559: my $min_nested_width = 0;
2560: my $max_nested_width = 0;
2561: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2562: $min_nested_width += $min_len[$col];
2563: $max_nested_width += $max_len[$col];
2564:
2565: }
2566: # Fudge in an extra 5 mm for borders etc:
2567:
2568: $min_nested_width += 5;
2569: $max_nested_width += 5;
2570:
2571: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2572: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2573: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2574: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2575: }
2576: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2577: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2578: }
2579:
2580: pop @Apache::londefdef::table;
2581: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2582: } else {
2583: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2584: pop @Apache::londefdef::table;
2585: undef @Apache::londefdef::table;
2586: }
2587: }
2588: &enable_para();
2589: }
2590: }
2591: return $currentstring;
2592: }
2593:
2594: #-- <tr> tag (end tag optional)
2595: sub start_tr {
2596: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2597: my $currentstring = '';
2598: if ($target eq 'web' || $target eq 'webgrade') {
2599: $currentstring = $token->[4];
2600: } elsif ($target eq 'tex') {
2601:
2602: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2603: $Apache::londefdef::table[-1]->start_row();
2604:
2605: if ($align ne '') {
2606: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2607: }
2608:
2609: #---------------------------------------------------------------
2610: # Old table code.
2611: #---------------------------------------------------------------
2612:
2613: if (0) {
2614: $Apache::londefdef::table[-1]{'row_number'}++;
2615: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2616: if ($alignchar ne '') {
2617: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2618: } else {
2619: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2620: }
2621: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2622: #
2623: # Need to save the number of table columns to preserve the max # columns.
2624: #
2625: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2626: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2627: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2628: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2629: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2630: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2631: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2632: }
2633: }
2634: return $currentstring;
2635: }
2636:
2637: sub end_tr {
2638: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2639: my $currentstring = &end_p(); # Close any pending <p> in the row.
2640: if ($target eq 'web' || $target eq 'webgrade') {
2641: $currentstring .= $token->[2];
2642: } elsif ($target eq 'tex') {
2643:
2644: # In case the user is missing a </td> or </th> tag:
2645:
2646: if ($Apache::londefdef::TD_redirection) {
2647: &end_td_tex($parstack,$parser,$safeeval);
2648: }
2649: $Apache::londefdef::table[-1]->end_row();
2650:
2651: #-----------------------------------------------
2652: # Old table code
2653: #-----------------------------------------------
2654:
2655: if (0) {
2656: if ($Apache::londefdef::TD_redirection) {
2657: &end_td_tex($parstack,$parser,$safeeval);
2658: }
2659: # Counter columns must be the maximum number of columns seen
2660: # in the table so far so:
2661: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2662: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2663: }
2664: }
2665:
2666:
2667: }
2668: return $currentstring;
2669: }
2670:
2671: #-- <td> tag (end tag optional)
2672: sub start_td {
2673: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2674: my $currentstring = '';
2675: if ($target eq 'web' || $target eq 'webgrade') {
2676: $currentstring = $token->[4];
2677: } elsif ($target eq 'tex') {
2678: $Apache::londefdef::TD_redirection = 1;
2679: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2680: }
2681: return $currentstring;
2682: }
2683:
2684: sub tag_check {
2685: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2686: my @ar=@$parstack;
2687: for (my $i=$#ar-1;$i>=0;$i--) {
2688: if (lc($$tagstack[$i]) eq $good_tag) {
2689: &start_td_tex($parstack,$parser,$safeeval);
2690: last;
2691: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2692: splice @ar, $i+1;
2693: &end_td_tex(\@ar,$parser,$safeeval);
2694: &start_td_tex($parstack,$parser,$safeeval);
2695: last;
2696: }
2697: }
2698: return '';
2699: }
2700:
2701: #
2702: # Factor out cell configuration hash generation:
2703: #
2704:
2705: sub cell_config_hash {
2706: my ($align, $rowspan, $colspan) = @_;
2707: my %config;
2708: if ($align ne '') {
2709: $config{'halign'} = $align;
2710: }
2711: if ($colspan ne "") {
2712: $config{'colspan'} = $colspan;
2713: }
2714: if ($rowspan ne '') {
2715: $config{'rowspan'} = $rowspan;
2716: }
2717: return \%config;
2718: }
2719:
2720: sub start_td_tex {
2721: my ($parstack,$parser,$safeeval) = @_;
2722:
2723: # At this stage, an empty cell is created with the
2724: # appropriate rowspan/colspan and alignment
2725: # attributes, but empty of text. end_td_tex will
2726: # fetch the contents from the recursive parse and
2727: # fill the cell with them:
2728: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2729: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2730: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2731:
2732: my $config = &cell_config_hash($align, $rowspan, $colspan);
2733:
2734: my $table = $Apache::londefdef::table[-1];
2735: $table->add_cell('', $config);
2736:
2737:
2738: #------------------------------------------------
2739: # Old table code.
2740: #------------------------------------------------
2741:
2742: if (0) {
2743:
2744: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2745: if ($alignchar eq '') {
2746: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2747: }
2748: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2749: $Apache::londefdef::table[-1]{'counter_columns'}++;
2750: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2751: if (defined $TeXwidth) {
2752: my $current_length=&recalc($TeXwidth);
2753: $current_length=~/(\d+\.?\d*)/;
2754: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2755: }
2756: }
2757: &Apache::lonxml::startredirection();
2758: return '';
2759: }
2760:
2761: sub end_td_tex {
2762:
2763: my $text = &Apache::lonxml::endredirection();
2764: my $table = $Apache::londefdef::table[-1];
2765: $table->append_cell_text($text);
2766:
2767: #-------------------------------------------------
2768: # Old table code
2769: #-------------------------------------------------
2770:
2771: if (0) {
2772: my ($parstack,$parser,$safeeval) = @_;
2773: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2774: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2775: my $data = &Apache::lonxml::endredirection();
2776:
2777: # The rowspan array of the table indicates which cells are part of a span.
2778: # n indicates the start of a span set of n rows.
2779: # ^ indicates a cell that continues a span set.
2780: # _ indicates the cell is at the bottom of a span set.
2781: # If this and subsequent cells are part of a rowspan, we must
2782: # push along the row until we find one that is not.
2783:
2784: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2785: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2786: # Part of a span.
2787: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2788: $current_column++;
2789: }
2790: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2791:
2792:
2793: # Get the column and row spans.
2794: # Colspan can be done via \multicolumn if I can figure out the data structs.
2795:
2796: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2797: if (!$colspan) {
2798: $colspan = 1;
2799: }
2800:
2801: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2802: if (!$rowspan) {
2803: $rowspan = 1;
2804: }
2805:
2806:
2807:
2808: for (my $c = 0; $c < $colspan; $c++) {
2809: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2810: for (my $i = 1; $i < $rowspan; $i++) {
2811: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2812: if ($i == ($rowspan-1)) {
2813: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2814: }
2815: }
2816: }
2817:
2818: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2819: if (defined $TeXwidth) {
2820: for (my $c = 0; $c < $colspan; $c++) {
2821: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2822: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2823: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2824: }
2825: } else {
2826: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2827: my $garbage_data=$data;
2828: my $fwidth=0;
2829: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2830: my $current_length=&recalc($1);
2831: $current_length=~/(\d+\.?\d*)/;
2832: if ($fwidth<$1) {$fwidth=$1;}
2833: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2834: }
2835: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2836: my $current_length=$1;
2837: if ($fwidth<$current_length) {$fwidth=$current_length;}
2838: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2839: }
2840: for (my $c = 0; $c < $colspan; $c++) {
2841: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2842: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2843: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2844: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2845: }
2846: } 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)*/) {
2847: my $garbage_data=$data;
2848: my $fwidth=0;
2849: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2850: my $current_length=&recalc($1);
2851: $current_length=~/(\d+\.?\d*)/;
2852: if ($fwidth<$1) {$fwidth=$1;}
2853: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2854: }
2855: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2856: my $current_length=&recalc($1);
2857: $current_length=~/(\d+\.?\d*)/;
2858: if ($fwidth<$1) {$fwidth=$1;}
2859: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2860: }
2861: for (my $c = 0; $c < $colspan; $c++) {
2862: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2863: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2864: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2865: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2866: }
2867: $data=~s/\\\\\s*$//;
2868: } else {
2869: $data=~s/^\s+(\S.*)/$1/;
2870: $data=~s/(.*\S)\s+$/$1/;
2871: $data=~s/(\s)+/$1/;
2872: my ($current_length,$min_length)=(0,0);
2873: if ($data=~/\\vskip/) {
2874: my $newdata=$data;
2875: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2876: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2877: foreach my $elementdata (@newdata) {
2878: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2879: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2880: my @words=split(/ /,$elementdata);
2881: foreach my $word (@words) {
2882: my $lengthword=2.5*&LATEX_length($word);
2883: if ($min_length<$lengthword) {$min_length=$lengthword;}
2884: }
2885: }
2886: } else {
2887: $current_length=2.5*&LATEX_length($data);
2888: my @words=split(/ /,$data);
2889: foreach my $word (@words) {
2890: my $lengthword=2*&LATEX_length($word);
2891: if ($min_length<$lengthword) {$min_length=$lengthword;}
2892: }
2893: }
2894: for (my $c = 0; $c < $colspan; $c++) {
2895: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2896: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2897: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2898: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2899: }
2900: }
2901: }
2902: # Substitute all of the tables nested in this cell in their appropriate places.
2903:
2904:
2905: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2906: for (my $in=0; $in<=$nested_count; $in++) {
2907: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2908: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2909: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2910: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2911:
2912: }
2913: # Should be be killing off the 'include' elements as they're used up?
2914:
2915: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2916:
2917:
2918:
2919:
2920: # the colspan array will indicate how many columns will be spanned by this
2921: # cell..this requires that counter_columns also be adjusted accordingly
2922: # so that the next bunch of text goes in the right cell. Note that since
2923: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2924: #
2925:
2926: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2927: for (my $i = 0; $i < ($colspan -1); $i++) {
2928: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2929: }
2930: for (my $r = 0; $r < $rowspan; $r++) {
2931: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2932: # Put empty text in spanned cols.
2933:
2934: }
2935:
2936: }
2937:
2938: return '';
2939: }
2940:
2941: sub end_td {
2942: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2943: my $currentstring = '';
2944: if ($target eq 'web' || $target eq 'webgrade') {
2945: $currentstring = $token->[2];
2946: } elsif ($target eq 'tex') {
2947: $Apache::londefdef::TD_redirection =0;
2948: &end_td_tex($parstack,$parser,$safeeval);
2949: }
2950: return $currentstring;
2951: }
2952:
2953: #-- <th> tag (end tag optional)
2954: sub start_th {
2955: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2956: my $currentstring = '';
2957: if ($target eq 'web' || $target eq 'webgrade') {
2958: $currentstring = $token->[4];
2959: } elsif ($target eq 'tex') {
2960: $Apache::londefdef::TD_redirection = 1;
2961: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2962: }
2963: return $currentstring;
2964: }
2965:
2966: sub tagg_check {
2967: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2968: my @ar=@$parstack;
2969: for (my $i=$#ar-1;$i>=0;$i--) {
2970: if (lc($$tagstack[$i]) eq $good_tag) {
2971: &start_th_tex($parstack,$parser,$safeeval);
2972: last;
2973: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2974: splice @ar, $i+1;
2975: &end_th_tex(\@ar,$parser,$safeeval);
2976: &start_th_tex($parstack,$parser,$safeeval);
2977: last;
2978: }
2979: }
2980: return '';
2981: }
2982:
2983: sub start_th_tex {
2984: my ($parstack,$parser,$safeeval) = @_;
2985:
2986: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2987: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2988: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2989:
2990: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2991: my $table = $Apache::londefdef::table[-1];
2992: $table->add_cell('\textbf{', $config);
2993:
2994: #-------------------------------------------------------------------------------------
2995: #
2996: # Old table code.
2997: #
2998: #--------------------------------------------------------------------------------------
2999:
3000: if (0) {
3001:
3002:
3003: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
3004: if ($alignchar eq '') {
3005: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
3006: }
3007: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
3008: $Apache::londefdef::table[-1]{'counter_columns'}++;
3009: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3010: if (defined $TeXwidth) {
3011: my $current_length=&recalc($TeXwidth);
3012: $current_length=~/(\d+\.?\d*)/;
3013: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
3014: }
3015: }
3016:
3017: # Accept xml until the </th> tag.
3018:
3019: &Apache::lonxml::startredirection();
3020: return '';
3021: }
3022:
3023: sub end_th_tex {
3024: my ($parstack,$parser,$safeeval) = @_;
3025:
3026: my $table = $Apache::londefdef::table[-1];
3027: my $text = &Apache::lonxml::endredirection();
3028: $table->append_cell_text($text.'}');
3029:
3030: #-----------------------------------------------------------------------------
3031: # Old table code:
3032: #-----------------------------------------------------------------------------
3033:
3034: if (0) {
3035: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3036: my $data=&Apache::lonxml::endredirection();
3037: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3038: if (defined $TeXwidth) {
3039: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3040: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3041: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3042: } else {
3043: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3044: my $garbage_data=$data;
3045: my $fwidth=0;
3046: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3047: my $current_length=&recalc($1);
3048: $current_length=~/(\d+\.?\d*)/;
3049: if ($fwidth<$1) {$fwidth=$1;}
3050: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3051: }
3052: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3053: my $current_length=$1;
3054: if ($fwidth<$current_length) {$fwidth=$current_length;}
3055: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3056: }
3057: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3058: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3059: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3060: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3061: } else {
3062: $data=~s/^\s+(\S.*)/$1/;
3063: $data=~s/(.*\S)\s+$/$1/;
3064: $data=~s/(\s)+/$1/;
3065: my ($current_length,$min_length)=(0,0);
3066: if ($data=~/\\vskip/) {
3067: my $newdata=$data;
3068: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3069: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3070: foreach my $elementdata (@newdata) {
3071: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3072: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3073: my @words=split(/ /,$elementdata);
3074: foreach my $word (@words) {
3075: my $lengthword=2.5*&LATEX_length($word);
3076: if ($min_length<$lengthword) {$min_length=$lengthword;}
3077: }
3078: }
3079: } else {
3080: $current_length=2.5*&LATEX_length($data);
3081: my @words=split(/ /,$data);
3082: foreach my $word (@words) {
3083: my $lengthword=2*&LATEX_length($word);
3084: if ($min_length<$lengthword) {$min_length=$lengthword;}
3085: }
3086: }
3087: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3088: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3089: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3090: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3091: }
3092: }
3093: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3094: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3095: }
3096: #make data bold
3097: $data='\textbf{'.$data.'}';
3098: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3099: }
3100: return'';
3101: }
3102:
3103: sub end_th {
3104: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3105: my $currentstring = &end_p(); # Close any open <p> in the row.
3106: if ($target eq 'web' || $target eq 'webgrade') {
3107: $currentstring .= $token->[2];
3108: } elsif ($target eq 'tex') {
3109: $Apache::londefdef::TD_redirection =0;
3110: &end_th_tex($parstack,$parser,$safeeval);
3111: }
3112: return $currentstring;
3113: }
3114:
3115: #-- <img> tag (end tag forbidden)
3116: #
3117: # Render the <IMG> tag.
3118: # <IMG> has the following attributes (in addition to the
3119: # standard HTML ones:
3120: # TeXwrap - Governs how the tex target will try to wrap text around
3121: # horizontally aligned images.
3122: # TeXwidth - The width of the image when rendered for print (mm).
3123: # TeXheight - The height of the image when rendered for print (mm)
3124: # (Note there seems to also be support for this as a % of page size)
3125: #
3126: sub start_img {
3127: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3128: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3129: undef,1);
3130: if (! $src &&
3131: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3132: ) {
3133: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3134: return '';
3135: }
3136: &Apache::lonxml::extlink($src);
3137: my $currentstring = '';
3138: my $scaling = .3;
3139:
3140: # Render unto browsers that which are the browser's...
3141:
3142: if ($target eq 'web' || $target eq 'webgrade') {
3143: if ($env{'browser.imagesuppress'} ne 'on') {
3144: my $enc = ('yes' eq
3145: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3146: $safeeval)));
3147: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3148: $enc);
3149: } else {
3150: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3151: undef,1);
3152: if (!$alttag) {
3153: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3154: $src);
3155: }
3156: $currentstring.='[IMAGE: '.$alttag.']';
3157: }
3158:
3159: # and render unto TeX that which is LaTeX
3160:
3161: } elsif ($target eq 'tex') {
3162: #
3163: # The alignment will require some superstructure to be put around
3164: # the \includegraphics stuff. At present we can only partially
3165: # simulate the alignments offered by html.
3166: #
3167: #
3168: my $align = lc(&Apache::lonxml::get_param('align',
3169: $parstack,
3170: $safeeval,
3171: undef,1));
3172: if(!$align) {
3173: $align = "bottom"; # This is html's default so it's ours too.
3174: }
3175: #
3176: &Apache::lonxml::debug("Alignemnt = $align");
3177: # LaTeX's image/text wrapping is really bad since it wants to
3178: # make figures float.
3179: # The user has the optional parameter (applicable only to l/r
3180: # alignment to use the picins/parpic directive to get wrapped text
3181: # this is also imperfect.. that's why we give them a choice...
3182: # so they can't yell at us for our choice.
3183: #
3184: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3185: $parstack,
3186: $safeeval,
3187: undef,0);
3188: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3189: if(!$latex_rendering) {
3190: $latex_rendering = "texwrap";
3191: }
3192: # using texwrap inside a table does not work. So, if after all of this,
3193: # texwrap is on, we turn it off if we detect we're in a table:
3194: #
3195: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3196: $latex_rendering = 'parpic';
3197: }
3198:
3199: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3200:
3201: #if original bmp/gif/jpg/png file exist do following:
3202: my $origsrc=$src;
3203: my ($path,$file) = &get_eps_image($src);
3204: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3205: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3206: &Apache::lonxml::debug("path = $path file = $file src = $src");
3207: if (-e $src) {
3208: &Apache::lonxml::debug("$src exists");
3209: my ($height_param,$width_param)=
3210: &image_size($origsrc,0.3,$parstack,$safeeval);
3211: my $size;
3212: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3213: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3214: # Default size if not able to extract that (e.g. eps image).
3215:
3216: # &Apache::lonnet::logthis("Size = $size");
3217:
3218: $size='['.$size;
3219: $size=~s/,$/]/;
3220: $currentstring .= '\graphicspath{{'.$path.'}}'
3221: .'\includegraphics'.$size.'{'.$file.'} ';
3222: my $closure;
3223: ($currentstring, $closure) = &align_latex_image($align,
3224: $latex_rendering,
3225: $currentstring,
3226: $width_param,
3227: $height_param);
3228: $currentstring .= $closure;
3229:
3230: } else {
3231: &Apache::lonxml::debug("$src does not exist");
3232: #original image file doesn't exist so check the alt attribute
3233: my $alt =
3234: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3235: unless ($alt) {
3236: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3237: }
3238:
3239: if ($alt) { $currentstring .= ' '.$alt.' '; }
3240: }
3241:
3242: # And here's where the semi-quote breaks down: allow the user
3243: # to edit the beast as well by rendering the problem for edit:
3244: } elsif ($target eq 'edit') {
3245: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3246: $currentstring .=&Apache::edit::tag_start($target,$token);
3247: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3248: &Apache::edit::browse('src',undef,'alt',$only).' '.
3249: &Apache::edit::search('src',undef,'alt').'<br />';
3250: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3251: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3252: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3253: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3254: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3255: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3256: ['','bottom','middle','top','left','right'],$token,5);
3257: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3258: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3259: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3260: ['no','yes'], $token, 2);
3261: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3262: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3263: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3264: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3265: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3266:
3267: if ($token->[2]{'src'}=~/\$/) {
3268: $currentstring.='Variable image source';
3269: } else {
3270: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3271: if ($width) { $currentstring.=' width="'.$width.'" '; }
3272: if ($height) { $currentstring.=' height="'.$height.'" '; }
3273: $currentstring .= ' />';
3274: }
3275: } elsif ($target eq 'modified') {
3276: my ($osrc,$owidth,$oheight)=
3277: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3278: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3279: $safeeval,'src','alt','align',
3280: 'TeXwidth','TeXheight', 'TeXwrap',
3281: 'width','height','encrypturl');
3282: my ($nsrc,$nwidth,$nheight)=
3283: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3284: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3285: &image_replication($loc);
3286: my ($iwidth,$iheight);
3287: if (-e $loc) {
3288: my $image = Image::Magick->new;
3289: $image->Read($loc);
3290: ($iwidth, $iheight) = ($image->Get('width'),
3291: $image->Get('height'));
3292: }
3293: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3294: # changed image or no size specified,
3295: # if they didn't explicitly change the
3296: # width or height use the ones from the image
3297: if ($iwidth && $iheight) {
3298: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3299: $token->[2]{'width'} = $iwidth;$ctag=1;
3300: }
3301: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3302: $token->[2]{'height'}=$iheight;$ctag=1;
3303: }
3304: }
3305: }
3306: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3307: # if we don't have a width or height
3308: if ($iwidth && $cwidth && !$cheight) {
3309: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3310: }
3311: if ($iheight && $cheight && !$cwidth) {
3312: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3313: }
3314: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3315: }
3316:
3317: return $currentstring;
3318: }
3319:
3320: sub end_img {
3321: my ($target,$token) = @_;
3322: my $currentstring = '';
3323: if ($target eq 'web' || $target eq 'webgrade') {
3324: $currentstring = $token->[2];
3325: } elsif ($target eq 'tex') {
3326: $currentstring = '';
3327: }
3328: return $currentstring;
3329: }
3330:
3331: #-- <applet> tag (end tag required)
3332: sub start_applet {
3333: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3334:
3335: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3336: &Apache::lonxml::extlink($code);
3337: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3338: undef,1);
3339: &Apache::lonxml::extlink($archive);
3340: my $currentstring = '';
3341: if ($target eq 'web' || $target eq 'webgrade') {
3342: if ($env{'browser.appletsuppress'} ne 'on') {
3343: $currentstring = &Apache::lonenc::encrypt_ref($token,
3344: {'code'=>$code,
3345: 'archive'=>$archive}
3346: );
3347: } else {
3348: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3349: $safeeval,undef,1);
3350: unless ($alttag) {
3351: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3352: $code);
3353: }
3354: $currentstring='[APPLET: '.$alttag.']';
3355: }
3356: } elsif ($target eq 'tex') {
3357: # Turn off some stuff we can't be inside thank you LaTeX
3358:
3359:
3360: my $restart_sub = 0;
3361: my $restart_sup = 0;
3362:
3363: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3364: # using the start_ stop_ functions.. those tags only care about
3365: # $target.
3366:
3367: if (&is_inside_of($tagstack, "sub")) {
3368: $restart_sub = 1;
3369: $currentstring .= &end_sub($target, $token, $tagstack,
3370: $parstack, $parser, $safeeval);
3371: }
3372: if (&is_inside_of($tagstack, "sup")) {
3373: $restart_sup = 1;
3374: $currentstring .= &end_sup($target, $token, $tagstack,
3375: $parstack, $parser, $safeeval);
3376: }
3377:
3378: # Now process the applet; just replace it with its alt attribute.
3379:
3380: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3381: $safeeval,undef,1);
3382: unless ($alttag) {
3383: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3384: undef,1);
3385: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3386: $code);
3387: }
3388: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3389: '.}\end{center}';
3390:
3391: # Turn stuff back on that we can't be inside of.
3392:
3393: if ($restart_sub) {
3394: $currentstring .= &start_sub($target, $token, $tagstack,
3395: $parstack, $parser, $safeeval);
3396: }
3397: if ($restart_sup) {
3398: $currentstring .= &start_sup($target, $token, $tagstack,
3399: $parstack, $parser, $safeeval);
3400: }
3401: }
3402: return $currentstring;
3403: }
3404:
3405: sub end_applet {
3406: my ($target,$token) = @_;
3407: my $currentstring = '';
3408: if ($target eq 'web' || $target eq 'webgrade') {
3409: $currentstring = $token->[2];
3410: } elsif ($target eq 'tex') {
3411: }
3412: return $currentstring;
3413: }
3414:
3415: #-- <embed> tag (end tag optional/required)
3416: sub start_embed {
3417: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3418: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3419: &Apache::lonxml::extlink($src);
3420: my $currentstring = '';
3421: if ($target eq 'web' || $target eq 'webgrade') {
3422: if ($env{'browser.embedsuppress'} ne 'on') {
3423: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3424: } else {
3425: my $alttag=&Apache::lonxml::get_param
3426: ('alt',$parstack,$safeeval,undef,1);
3427: unless ($alttag) {
3428: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3429: }
3430: $currentstring='[EMBED: '.$alttag.']';
3431: }
3432: } elsif ($target eq 'tex') {
3433: }
3434: return $currentstring;
3435: }
3436:
3437: sub end_embed {
3438: my ($target,$token) = @_;
3439: my $currentstring = '';
3440: if ($target eq 'web' || $target eq 'webgrade') {
3441: $currentstring = $token->[2];
3442: } elsif ($target eq 'tex') {
3443: }
3444: return $currentstring;
3445: }
3446:
3447: #-- <param> tag (end tag forbidden)
3448: sub start_param {
3449: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3450: if (&Apache::lonxml::get_param('name',$parstack,
3451: $safeeval,undef,1)=~/^cabbase$/i) {
3452: my $value=&Apache::lonxml::get_param('value',$parstack,
3453: $safeeval,undef,1);
3454: &Apache::lonxml::extlink($value);
3455: }
3456:
3457: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3458: &Apache::lonxml::extlink($src);
3459: my $currentstring = '';
3460: if ($target eq 'web' || $target eq 'webgrade') {
3461: my %toconvert;
3462: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3463: if ($src) { $toconvert{'src'}= $src; }
3464: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3465: undef,1);
3466: if ($name=~/^cabbase$/i) {
3467: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3468: $safeeval,undef,1);
3469: }
3470: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3471: } elsif ($target eq 'tex') {
3472: }
3473: return $currentstring;
3474: }
3475:
3476: sub end_param {
3477: my ($target,$token) = @_;
3478: my $currentstring = '';
3479: if ($target eq 'web' || $target eq 'webgrade') {
3480: $currentstring = $token->[2];
3481: } elsif ($target eq 'tex') {
3482: }
3483: return $currentstring;
3484: }
3485:
3486: #-- <allow> tag
3487: sub start_allow {
3488: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3489: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3490: &Apache::lonxml::extlink($src);
3491:
3492: if ($target eq 'tex') { &image_replication($src); }
3493: my $result;
3494: if ($target eq 'edit') {
3495: $result .=&Apache::edit::tag_start($target,$token);
3496: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3497: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3498: } elsif ($target eq 'modified') {
3499: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3500: $safeeval,'src');
3501: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3502: }
3503: return $result;
3504: }
3505:
3506: sub end_allow {
3507: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3508: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3509: return '';
3510: }
3511:
3512: #-- Frames (end tag required)
3513: #-- <frameset>
3514: sub start_frameset {
3515: my ($target,$token) = @_;
3516: my $currentstring = ''; # Close any pending para.
3517: if ($target eq 'web' || $target eq 'webgrade') {
3518: $currentstring =
3519: &Apache::loncommon::start_page($Apache::londefdef::title,
3520: $Apache::londefdef::head,
3521: {'add_entries' => $token->[2],
3522: # 'no_title' => 1,
3523: 'force_register' => 1,
3524: 'frameset' => 1,});
3525:
3526: }
3527: return $currentstring;
3528: }
3529:
3530: sub end_frameset {
3531: my ($target,$token) = @_;
3532: my $currentstring = '';
3533: if ($target eq 'web' || $target eq 'webgrade') {
3534: $currentstring = $token->[2];
3535: }
3536: return $currentstring;
3537: }
3538:
3539: #-- <xmp> (end tag required)
3540: sub start_xmp {
3541: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web' || $target eq 'webgrade') {
3544: $currentstring .= $token->[4];
3545: } elsif ($target eq 'tex') {
3546: $currentstring .= '\begin{verbatim}';
3547: }
3548: return $currentstring;
3549: }
3550:
3551: sub end_xmp {
3552: my ($target,$token) = @_;
3553: my $currentstring = '';
3554: if ($target eq 'web' || $target eq 'webgrade') {
3555: $currentstring .= $token->[2];
3556: } elsif ($target eq 'tex') {
3557: $currentstring .= '\end{verbatim}';
3558: }
3559: return $currentstring;
3560: }
3561:
3562: #-- <pre> (end tag required)
3563: sub start_pre {
3564: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3565: my $currentstring = &end_p(); # close off pending <p>
3566: if ($target eq 'web' || $target eq 'webgrade') {
3567: $currentstring .= $token->[4];
3568: } elsif ($target eq 'tex') {
3569: $currentstring .= '\begin{verbatim}';
3570: &Apache::lonxml::disable_LaTeX_substitutions();
3571: }
3572: return $currentstring;
3573: }
3574:
3575: sub end_pre {
3576: my ($target,$token) = @_;
3577: my $currentstring = '';
3578: if ($target eq 'web' || $target eq 'webgrade') {
3579: $currentstring .= $token->[2];
3580: } elsif ($target eq 'tex') {
3581: $currentstring .= '\end{verbatim}';
3582: &Apache::lonxml::enable_LaTeX_substitutions();
3583: }
3584: return $currentstring;
3585: }
3586:
3587: #-- <insert>
3588: sub start_insert {
3589: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3590: my $currentstring = '';
3591: if ($target eq 'web' || $target eq 'webgrade') {
3592: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3593: $currentstring .= '<b>'.$display.'</b>';;
3594: }
3595: return $currentstring;
3596: }
3597:
3598: sub end_insert {
3599: my ($target,$token) = @_;
3600: my $currentstring = '';
3601: if ($target eq 'web' || $target eq 'webgrade') {
3602: $currentstring .= '';
3603: }
3604: return $currentstring;
3605: }
3606:
3607: #-- <externallink>
3608: sub start_externallink {
3609: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3610: my $currentstring = '';
3611: if ($target eq 'web' || $target eq 'webgrade') {
3612: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3613: $currentstring .= '<b>'.$display.'</b>';;
3614: }
3615: return $currentstring;
3616: }
3617:
3618: sub end_externallink {
3619: my ($target,$token) = @_;
3620: my $currentstring = '';
3621: if ($target eq 'web' || $target eq 'webgrade') {
3622: $currentstring .= '';
3623: }
3624: return $currentstring;
3625: }
3626:
3627: #-- <blankspace heigth="">
3628: sub start_blankspace {
3629: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3630: my $currentstring = &end_p(); # closes off any unclosed <p>
3631: if ($target eq 'tex') {
3632: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3633: $currentstring .= '\vskip '.$howmuch.' ';
3634: }
3635: return $currentstring;
3636: }
3637:
3638: sub end_blankspace {
3639: my ($target,$token) = @_;
3640: my $currentstring = '';
3641: if ($target eq 'tex') {
3642: $currentstring .= '';
3643: }
3644: return $currentstring;
3645: }
3646:
3647: #-- <abbr> tag (end tag required)
3648: sub start_abbr {
3649: my ($target,$token) = @_;
3650: my $currentstring = '';
3651: if ($target eq 'web' || $target eq 'webgrade') {
3652: $currentstring = $token->[4];
3653: }
3654: return $currentstring;
3655: }
3656:
3657: sub end_abbr {
3658: my ($target,$token) = @_;
3659: my $currentstring = '';
3660: if ($target eq 'web' || $target eq 'webgrade') {
3661: $currentstring = $token->[2];
3662: }
3663: return $currentstring;
3664: }
3665:
3666: #-- <acronym> tag (end tag required)
3667: sub start_acronym {
3668: my ($target,$token) = @_;
3669: my $currentstring = '';
3670: if ($target eq 'web' || $target eq 'webgrade') {
3671: $currentstring = $token->[4];
3672: }
3673: return $currentstring;
3674: }
3675:
3676: sub end_acronym {
3677: my ($target,$token) = @_;
3678: my $currentstring = '';
3679: if ($target eq 'web' || $target eq 'webgrade') {
3680: $currentstring = $token->[2];
3681: }
3682: return $currentstring;
3683: }
3684:
3685: #-- <area> tag (end tag forbidden)
3686: sub start_area {
3687: my ($target,$token) = @_;
3688: my $currentstring = '';
3689: if ($target eq 'web' || $target eq 'webgrade') {
3690: $currentstring = $token->[4];
3691: }
3692: return $currentstring;
3693: }
3694:
3695: sub end_area {
3696: my ($target,$token) = @_;
3697: my $currentstring = '';
3698: if ($target eq 'web' || $target eq 'webgrade') {
3699: $currentstring = $token->[2];
3700: }
3701: return $currentstring;
3702: }
3703:
3704: #-- <base> tag (end tag forbidden)
3705: sub start_base {
3706: my ($target,$token) = @_;
3707: my $currentstring = '';
3708: if ($target eq 'web' || $target eq 'webgrade') {
3709: $currentstring = $token->[4];
3710: }
3711: return $currentstring;
3712: }
3713:
3714: sub end_base {
3715: my ($target,$token) = @_;
3716: my $currentstring = '';
3717: if ($target eq 'web' || $target eq 'webgrade') {
3718: $currentstring = $token->[2];
3719: }
3720: return $currentstring;
3721: }
3722:
3723: #-- <bdo> tag (end tag required)
3724: sub start_bdo {
3725: my ($target,$token) = @_;
3726: my $currentstring = '';
3727: if ($target eq 'web' || $target eq 'webgrade') {
3728: $currentstring = $token->[4];
3729: }
3730: return $currentstring;
3731: }
3732:
3733: sub end_bdo {
3734: my ($target,$token) = @_;
3735: my $currentstring = '';
3736: if ($target eq 'web' || $target eq 'webgrade') {
3737: $currentstring = $token->[2];
3738: }
3739: return $currentstring;
3740: }
3741:
3742: #-- <bgsound> tag (end tag optional)
3743: sub start_bgsound {
3744: my ($target,$token) = @_;
3745: my $currentstring = '';
3746: if ($target eq 'web' || $target eq 'webgrade') {
3747: $currentstring = $token->[4];
3748: }
3749: return $currentstring;
3750: }
3751:
3752: sub end_bgsound {
3753: my ($target,$token) = @_;
3754: my $currentstring = '';
3755: if ($target eq 'web' || $target eq 'webgrade') {
3756: $currentstring = $token->[2];
3757: }
3758: return $currentstring;
3759: }
3760:
3761: #-- <blink> tag (end tag required)
3762: sub start_blink {
3763: my ($target,$token) = @_;
3764: my $currentstring = '';
3765: if ($target eq 'web' || $target eq 'webgrade') {
3766: $currentstring = $token->[4];
3767: }
3768: return $currentstring;
3769: }
3770:
3771: sub end_blink {
3772: my ($target,$token) = @_;
3773: my $currentstring = '';
3774: if ($target eq 'web' || $target eq 'webgrade') {
3775: $currentstring = $token->[2];
3776: }
3777: return $currentstring;
3778: }
3779:
3780: #-- <blockquote> tag (end tag required)
3781: sub start_blockquote {
3782: my ($target,$token) = @_;
3783: my $currentstring = &end_p(); # Close any unclosed <p>
3784: if ($target eq 'web' || $target eq 'webgrade') {
3785: $currentstring .= $token->[4];
3786: }
3787: if ($target eq 'tex') {
3788: $currentstring .= '\begin{quote}';
3789: }
3790: return $currentstring;
3791: }
3792:
3793: sub end_blockquote {
3794: my ($target,$token) = @_;
3795: my $currentstring = '';
3796: if ($target eq 'web' || $target eq 'webgrade') {
3797: $currentstring = $token->[2];
3798: }
3799: if ($target eq 'tex') {
3800: $currentstring = '\end{quote}';
3801: }
3802: return $currentstring;
3803: }
3804:
3805: #-- <button> tag (end tag required)
3806: sub start_button {
3807: my ($target,$token) = @_;
3808: my $currentstring = '';
3809: if ($target eq 'web' || $target eq 'webgrade') {
3810: $currentstring = $token->[4];
3811: }
3812: return $currentstring;
3813: }
3814:
3815: sub end_button {
3816: my ($target,$token) = @_;
3817: my $currentstring = '';
3818: if ($target eq 'web' || $target eq 'webgrade') {
3819: $currentstring = $token->[2];
3820: }
3821: return $currentstring;
3822: }
3823:
3824: #-- <caption> tag (end tag required)
3825: sub start_caption {
3826: my ($target,$token) = @_;
3827: my $currentstring = '';
3828: if ($target eq 'web' || $target eq 'webgrade') {
3829: $currentstring = $token->[4];
3830: }
3831: return $currentstring;
3832: }
3833:
3834: sub end_caption {
3835: my ($target,$token) = @_;
3836: my $currentstring = '';
3837: if ($target eq 'web' || $target eq 'webgrade') {
3838: $currentstring = $token->[2];
3839: }
3840: return $currentstring;
3841: }
3842:
3843: #-- <col> tag (end tag forbdden)
3844: sub start_col {
3845: my ($target,$token) = @_;
3846: my $currentstring = '';
3847: if ($target eq 'web' || $target eq 'webgrade') {
3848: $currentstring = $token->[4];
3849: }
3850: return $currentstring;
3851: }
3852:
3853: sub end_col {
3854: my ($target,$token) = @_;
3855: my $currentstring = '';
3856: if ($target eq 'web' || $target eq 'webgrade') {
3857: $currentstring = $token->[2];
3858: }
3859: return $currentstring;
3860: }
3861:
3862: #-- <colgroup> tag (end tag optional)
3863: sub start_colgroup {
3864: my ($target,$token) = @_;
3865: my $currentstring = '';
3866: if ($target eq 'web' || $target eq 'webgrade') {
3867: $currentstring = $token->[4];
3868: }
3869: return $currentstring;
3870: }
3871:
3872: sub end_colgroup {
3873: my ($target,$token) = @_;
3874: my $currentstring = '';
3875: if ($target eq 'web' || $target eq 'webgrade') {
3876: $currentstring = $token->[2];
3877: }
3878: return $currentstring;
3879: }
3880:
3881: #-- <del> tag (end tag required)
3882: sub start_del {
3883: my ($target,$token) = @_;
3884: my $currentstring = '';
3885: if ($target eq 'web' || $target eq 'webgrade') {
3886: $currentstring = $token->[4];
3887: }
3888: return $currentstring;
3889: }
3890:
3891: sub end_del {
3892: my ($target,$token) = @_;
3893: my $currentstring = '';
3894: if ($target eq 'web' || $target eq 'webgrade') {
3895: $currentstring = $token->[2];
3896: }
3897: return $currentstring;
3898: }
3899:
3900: #-- <fieldset> tag (end tag required)
3901: sub start_fieldset {
3902: my ($target,$token) = @_;
3903: my $currentstring = '';
3904: if ($target eq 'web' || $target eq 'webgrade') {
3905: $currentstring = $token->[4];
3906: }
3907: return $currentstring;
3908: }
3909:
3910: sub end_fieldset {
3911: my ($target,$token) = @_;
3912: my $currentstring = '';
3913: if ($target eq 'web' || $target eq 'webgrade') {
3914: $currentstring = $token->[2];
3915: }
3916: return $currentstring;
3917: }
3918:
3919: #-- <frame> tag (end tag forbidden)
3920: sub start_frame {
3921: my ($target,$token) = @_;
3922: my $currentstring = '';
3923: if ($target eq 'web' || $target eq 'webgrade') {
3924: $currentstring = $token->[4];
3925: }
3926: return $currentstring;
3927: }
3928:
3929: sub end_frame {
3930: my ($target,$token) = @_;
3931: my $currentstring = '';
3932: if ($target eq 'web' || $target eq 'webgrade') {
3933: $currentstring = $token->[2];
3934: }
3935: return $currentstring;
3936: }
3937:
3938: #-- <iframe> tag (end tag required)
3939: sub start_iframe {
3940: my ($target,$token) = @_;
3941: my $currentstring = '';
3942: if ($target eq 'web' || $target eq 'webgrade') {
3943: $currentstring = $token->[4];
3944: }
3945: return $currentstring;
3946: }
3947:
3948: sub end_iframe {
3949: my ($target,$token) = @_;
3950: my $currentstring = '';
3951: if ($target eq 'web' || $target eq 'webgrade') {
3952: $currentstring = $token->[2];
3953: }
3954: return $currentstring;
3955: }
3956:
3957: #-- <ins> tag (end tag required)
3958: sub start_ins {
3959: my ($target,$token) = @_;
3960: my $currentstring = '';
3961: if ($target eq 'web' || $target eq 'webgrade') {
3962: $currentstring = $token->[4];
3963: }
3964: return $currentstring;
3965: }
3966:
3967: sub end_ins {
3968: my ($target,$token) = @_;
3969: my $currentstring = '';
3970: if ($target eq 'web' || $target eq 'webgrade') {
3971: $currentstring = $token->[2];
3972: }
3973: return $currentstring;
3974: }
3975:
3976: #-- <isindex> tag (end tag forbidden)
3977: sub start_isindex {
3978: my ($target,$token) = @_;
3979: my $currentstring = '';
3980: if ($target eq 'web' || $target eq 'webgrade') {
3981: $currentstring = $token->[4];
3982: }
3983: return $currentstring;
3984: }
3985:
3986: sub end_isindex {
3987: my ($target,$token) = @_;
3988: my $currentstring = '';
3989: if ($target eq 'web' || $target eq 'webgrade') {
3990: $currentstring = $token->[2];
3991: }
3992: return $currentstring;
3993: }
3994:
3995: #-- <keygen> tag (end tag forbidden)
3996: sub start_keygen {
3997: my ($target,$token) = @_;
3998: my $currentstring = '';
3999: if ($target eq 'web' || $target eq 'webgrade') {
4000: $currentstring = $token->[4];
4001: }
4002: return $currentstring;
4003: }
4004:
4005: sub end_keygen {
4006: my ($target,$token) = @_;
4007: my $currentstring = '';
4008: if ($target eq 'web' || $target eq 'webgrade') {
4009: $currentstring = $token->[2];
4010: }
4011: return $currentstring;
4012: }
4013:
4014: #-- <label> tag
4015: sub start_label {
4016: my ($target,$token) = @_;
4017: my $currentstring = '';
4018: if ($target eq 'web' || $target eq 'webgrade') {
4019: $currentstring = $token->[4];
4020: }
4021: return $currentstring;
4022: }
4023:
4024: sub end_label {
4025: my ($target,$token) = @_;
4026: my $currentstring = '';
4027: if ($target eq 'web' || $target eq 'webgrade') {
4028: $currentstring = $token->[2];
4029: }
4030: return $currentstring;
4031: }
4032:
4033: #-- <layer> tag (end tag required)
4034: sub start_layer {
4035: my ($target,$token) = @_;
4036: my $currentstring = '';
4037: if ($target eq 'web' || $target eq 'webgrade') {
4038: $currentstring = $token->[4];
4039: }
4040: return $currentstring;
4041: }
4042:
4043: sub end_layer {
4044: my ($target,$token) = @_;
4045: my $currentstring = '';
4046: if ($target eq 'web' || $target eq 'webgrade') {
4047: $currentstring = $token->[2];
4048: }
4049: return $currentstring;
4050: }
4051:
4052: #-- <legend> tag (end tag required)
4053: sub start_legend {
4054: my ($target,$token) = @_;
4055: my $currentstring = '';
4056: if ($target eq 'web' || $target eq 'webgrade') {
4057: $currentstring = $token->[4];
4058: }
4059: return $currentstring;
4060: }
4061:
4062: sub end_legend {
4063: my ($target,$token) = @_;
4064: my $currentstring = '';
4065: if ($target eq 'web' || $target eq 'webgrade') {
4066: $currentstring = $token->[2];
4067: }
4068: return $currentstring;
4069: }
4070:
4071: #-- <link> tag (end tag forbidden)
4072: sub start_link {
4073: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4074: my $currentstring = '';
4075: if ($target eq 'web' || $target eq 'webgrade') {
4076: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4077: undef,1);
4078: &Apache::lonxml::extlink($href);
4079: $currentstring = $token->[4];
4080: }
4081: return $currentstring;
4082: }
4083:
4084: sub end_link {
4085: my ($target,$token) = @_;
4086: my $currentstring = '';
4087: if ($target eq 'web' || $target eq 'webgrade') {
4088: $currentstring = $token->[2];
4089: }
4090: return $currentstring;
4091: }
4092:
4093: #-- <marquee> tag (end tag optional)
4094: sub start_marquee {
4095: my ($target,$token) = @_;
4096: my $currentstring = '';
4097: if ($target eq 'web' || $target eq 'webgrade') {
4098: $currentstring = $token->[4];
4099: }
4100: return $currentstring;
4101: }
4102:
4103: sub end_marquee {
4104: my ($target,$token) = @_;
4105: my $currentstring = '';
4106: if ($target eq 'web' || $target eq 'webgrade') {
4107: $currentstring = $token->[2];
4108: }
4109: return $currentstring;
4110: }
4111:
4112: #-- <multicol> tag (end tag required)
4113: sub start_multicol {
4114: my ($target,$token) = @_;
4115: my $currentstring = &end_p(); # Close any pending <p>
4116: if ($target eq 'web' || $target eq 'webgrade') {
4117: $currentstring .= $token->[4];
4118: }
4119: return $currentstring;
4120: }
4121:
4122: sub end_multicol {
4123: my ($target,$token) = @_;
4124: my $currentstring = '';
4125: if ($target eq 'web' || $target eq 'webgrade') {
4126: $currentstring = $token->[2];
4127: }
4128: return $currentstring;
4129: }
4130:
4131: #-- <nobr> tag (end tag required)
4132: sub start_nobr {
4133: my ($target,$token) = @_;
4134: my $currentstring = '';
4135: if ($target eq 'web' || $target eq 'webgrade') {
4136: $currentstring = $token->[4];
4137: } elsif ($target eq 'tex') {
4138: $currentstring='\mbox{';
4139: }
4140: return $currentstring;
4141: }
4142:
4143: sub end_nobr {
4144: my ($target,$token) = @_;
4145: my $currentstring = '';
4146: if ($target eq 'web' || $target eq 'webgrade') {
4147: $currentstring = $token->[2];
4148: } elsif ($target eq 'tex') {
4149: $currentstring='}';
4150: }
4151: return $currentstring;
4152: }
4153:
4154: #-- <noembed> tag (end tag required)
4155: sub start_noembed {
4156: my ($target,$token) = @_;
4157: my $currentstring = '';
4158: if ($target eq 'web' || $target eq 'webgrade') {
4159: $currentstring = $token->[4];
4160: }
4161: return $currentstring;
4162: }
4163:
4164: sub end_noembed {
4165: my ($target,$token) = @_;
4166: my $currentstring = '';
4167: if ($target eq 'web' || $target eq 'webgrade') {
4168: $currentstring = $token->[2];
4169: }
4170: return $currentstring;
4171: }
4172:
4173: #-- <noframes> tag (end tag required)
4174: sub start_noframes {
4175: my ($target,$token) = @_;
4176: my $currentstring = '';
4177: if ($target eq 'web' || $target eq 'webgrade') {
4178: $currentstring = $token->[4];
4179: }
4180: return $currentstring;
4181: }
4182:
4183: sub end_noframes {
4184: my ($target,$token) = @_;
4185: my $currentstring = '';
4186: if ($target eq 'web' || $target eq 'webgrade') {
4187: $currentstring = $token->[2];
4188: }
4189: return $currentstring;
4190: }
4191:
4192: #-- <nolayer> tag (end tag required)
4193: sub start_nolayer {
4194: my ($target,$token) = @_;
4195: my $currentstring = '';
4196: if ($target eq 'web' || $target eq 'webgrade') {
4197: $currentstring = $token->[4];
4198: }
4199: return $currentstring;
4200: }
4201:
4202: sub end_nolayer {
4203: my ($target,$token) = @_;
4204: my $currentstring = '';
4205: if ($target eq 'web' || $target eq 'webgrade') {
4206: $currentstring = $token->[2];
4207: }
4208: return $currentstring;
4209: }
4210:
4211: #-- <noscript> tag (end tag required)
4212: sub start_noscript {
4213: my ($target,$token) = @_;
4214: my $currentstring = '';
4215: if ($target eq 'web' || $target eq 'webgrade') {
4216: $currentstring = $token->[4];
4217: }
4218: return $currentstring;
4219: }
4220:
4221: sub end_noscript {
4222: my ($target,$token) = @_;
4223: my $currentstring = '';
4224: if ($target eq 'web' || $target eq 'webgrade') {
4225: $currentstring = $token->[2];
4226: }
4227: return $currentstring;
4228: }
4229:
4230: #-- <object> tag (end tag required)
4231: sub start_object {
4232: my ($target,$token) = @_;
4233: my $currentstring = '';
4234: if ($target eq 'web' || $target eq 'webgrade') {
4235: $currentstring = $token->[4];
4236: }
4237: return $currentstring;
4238: }
4239:
4240: sub end_object {
4241: my ($target,$token) = @_;
4242: my $currentstring = '';
4243: if ($target eq 'web' || $target eq 'webgrade') {
4244: $currentstring = $token->[2];
4245: }
4246: return $currentstring;
4247: }
4248:
4249: #-- <optgroup> tag (end tag required)
4250: sub start_optgroup {
4251: my ($target,$token) = @_;
4252: my $currentstring = '';
4253: if ($target eq 'web' || $target eq 'webgrade') {
4254: $currentstring = $token->[4];
4255: }
4256: return $currentstring;
4257: }
4258:
4259: sub end_optgroup {
4260: my ($target,$token) = @_;
4261: my $currentstring = '';
4262: if ($target eq 'web' || $target eq 'webgrade') {
4263: $currentstring = $token->[2];
4264: }
4265: return $currentstring;
4266: }
4267:
4268: #-- <samp> tag (end tag required)
4269: sub start_samp {
4270: my ($target,$token) = @_;
4271: my $currentstring = '';
4272: if ($target eq 'web' || $target eq 'webgrade') {
4273: $currentstring = $token->[4];
4274: } elsif ($target eq 'tex') {
4275: $currentstring='\texttt{';
4276: }
4277: return $currentstring;
4278: }
4279:
4280: sub end_samp {
4281: my ($target,$token) = @_;
4282: my $currentstring = '';
4283: if ($target eq 'web' || $target eq 'webgrade') {
4284: $currentstring = $token->[2];
4285: } elsif ($target eq 'tex') {
4286: $currentstring='}';
4287: }
4288: return $currentstring;
4289: }
4290:
4291: #-- <server> tag
4292: sub start_server {
4293: my ($target,$token) = @_;
4294: my $currentstring = '';
4295: if ($target eq 'web' || $target eq 'webgrade') {
4296: $currentstring = $token->[4];
4297: }
4298: return $currentstring;
4299: }
4300:
4301: sub end_server {
4302: my ($target,$token) = @_;
4303: my $currentstring = '';
4304: if ($target eq 'web' || $target eq 'webgrade') {
4305: $currentstring = $token->[2];
4306: }
4307: return $currentstring;
4308: }
4309:
4310: #-- <spacer> tag (end tag forbidden)
4311: sub start_spacer {
4312: my ($target,$token) = @_;
4313: my $currentstring = &end_p(); # Close off any open <p> tag.
4314: if ($target eq 'web' || $target eq 'webgrade') {
4315: $currentstring .= $token->[4];
4316: }
4317: return $currentstring;
4318: }
4319:
4320: sub end_spacer {
4321: my ($target,$token) = @_;
4322: my $currentstring = '';
4323: if ($target eq 'web' || $target eq 'webgrade') {
4324: $currentstring = $token->[2];
4325: }
4326: return $currentstring;
4327: }
4328:
4329: #-- <span> tag (end tag required)
4330: sub start_span {
4331: my ($target,$token) = @_;
4332: my $currentstring = '';
4333: if ($target eq 'web' || $target eq 'webgrade') {
4334: $currentstring = $token->[4];
4335: }
4336: return $currentstring;
4337: }
4338:
4339: sub end_span {
4340: my ($target,$token) = @_;
4341: my $currentstring = '';
4342: if ($target eq 'web' || $target eq 'webgrade') {
4343: $currentstring = $token->[2];
4344: }
4345: return $currentstring;
4346: }
4347:
4348: #-- <tbody> tag (end tag optional)
4349: sub start_tbody {
4350: my ($target,$token) = @_;
4351: my $currentstring = '';
4352: if ($target eq 'web' || $target eq 'webgrade') {
4353: $currentstring = $token->[4];
4354: }
4355: return $currentstring;
4356: }
4357:
4358: sub end_tbody {
4359: my ($target,$token) = @_;
4360: my $currentstring = '';
4361: if ($target eq 'web' || $target eq 'webgrade') {
4362: $currentstring = $token->[2];
4363: }
4364: return $currentstring;
4365: }
4366:
4367: #-- <tfoot> tag (end tag optional)
4368: sub start_tfoot {
4369: my ($target,$token) = @_;
4370: my $currentstring = '';
4371: if ($target eq 'web' || $target eq 'webgrade') {
4372: $currentstring = $token->[4];
4373: }
4374: return $currentstring;
4375: }
4376:
4377: sub end_tfoot {
4378: my ($target,$token) = @_;
4379: my $currentstring = '';
4380: if ($target eq 'web' || $target eq 'webgrade') {
4381: $currentstring = $token->[2];
4382: }
4383: return $currentstring;
4384: }
4385:
4386: #-- <thead> tag (end tag optional)
4387: sub start_thead {
4388: my ($target,$token) = @_;
4389: my $currentstring = '';
4390: if ($target eq 'web' || $target eq 'webgrade') {
4391: $currentstring = $token->[4];
4392: }
4393: return $currentstring;
4394: }
4395:
4396: sub end_thead {
4397: my ($target,$token) = @_;
4398: my $currentstring = '';
4399: if ($target eq 'web' || $target eq 'webgrade') {
4400: $currentstring = $token->[2];
4401: }
4402: return $currentstring;
4403: }
4404:
4405: #-- <var> tag
4406: sub start_var {
4407: my ($target,$token) = @_;
4408: my $currentstring = '';
4409: if ($target eq 'web' || $target eq 'webgrade') {
4410: $currentstring = $token->[4];
4411: } elsif ($target eq 'tex') {
4412: $currentstring = '\textit{';
4413: }
4414: return $currentstring;
4415: }
4416:
4417: sub end_var {
4418: my ($target,$token) = @_;
4419: my $currentstring = '';
4420: if ($target eq 'web' || $target eq 'webgrade') {
4421: $currentstring = $token->[2];
4422: } elsif ($target eq 'tex') {
4423: $currentstring = '}';
4424: }
4425: return $currentstring;
4426: }
4427:
4428: #-- <wbr> tag (end tag forbidden)
4429: sub start_wbr {
4430: my ($target,$token) = @_;
4431: my $currentstring = '';
4432: if ($target eq 'web' || $target eq 'webgrade') {
4433: $currentstring = $token->[4];
4434: }
4435: return $currentstring;
4436: }
4437:
4438: sub end_wbr {
4439: my ($target,$token) = @_;
4440: my $currentstring = '';
4441: if ($target eq 'web' || $target eq 'webgrade') {
4442: $currentstring = $token->[2];
4443: }
4444: return $currentstring;
4445: }
4446:
4447: #-- <hideweboutput> tag
4448: sub start_hideweboutput {
4449: my ($target,$token) = @_;
4450: if ($target eq 'web' || $target eq 'webgrade') {
4451: &Apache::lonxml::startredirection();
4452: }
4453: return '';
4454: }
4455:
4456: sub end_hideweboutput {
4457: my ($target,$token) = @_;
4458: my $currentstring = '';
4459: if ($target eq 'web' || $target eq 'webgrade') {
4460: $currentstring = &Apache::lonxml::endredirection();
4461: }
4462: return '';
4463: }
4464:
4465:
4466: sub image_replication {
4467: my $src = shift;
4468: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4469: #replicates eps or ps
4470: my $epssrc = my $pssrc = $src;
4471: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4472: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4473: if (not -e $epssrc && not -e $pssrc) {
4474: my $result=&Apache::lonnet::repcopy($epssrc);
4475: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4476: }
4477: return '';
4478: }
4479:
4480:
4481:
4482: sub resize_image {
4483: my ($height_param, $width_param, $scaling,
4484: $parstack, $safeeval, $depth, $cis) = @_;
4485:
4486: # First apply the scaling...
4487:
4488: $height_param = $height_param * $scaling;
4489: $width_param = $width_param * $scaling;
4490:
4491: #do we have any specified LaTeX size of the picture?
4492: my $toget='TeXwidth';
4493: if ($cis) {
4494: $toget=lc($toget);
4495: }
4496: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4497: $safeeval,$depth,$cis);
4498: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4499: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4500: $safeeval,$depth,$cis);
4501: #do we have any specified web size of the picture?
4502: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4503: $depth,1);
4504: if ($TeXwidth) {
4505: my $old_width_param=$width_param;
4506: if ($TeXwidth=~/(\d+)\s*\%/) {
4507: $width_param = $1*$env{'form.textwidth'}/100;
4508: } else {
4509: $width_param = $TeXwidth;
4510: }
4511: if ($TeXheight) {
4512: $height_param = $TeXheight;
4513: } elsif ($old_width_param) {
4514: $height_param=$TeXwidth/$old_width_param*$height_param;
4515: }
4516: } elsif ($TeXheight) {
4517: $height_param = $TeXheight;
4518: if ($height_param) {
4519: $width_param = $TeXheight/$height_param*$width_param;
4520: }
4521: } elsif ($width) {
4522: my $old_width_param=$width_param;
4523: $width_param = $width*$scaling;
4524: if ($old_width_param) {
4525: $height_param=$width_param/$old_width_param*$height_param;
4526: }
4527: }
4528: if ($width_param > $env{'form.textwidth'}) {
4529: my $old_width_param=$width_param;
4530: $width_param =0.95*$env{'form.textwidth'};
4531: if ($old_width_param) {
4532: $height_param=$width_param/$old_width_param*$height_param;
4533: }
4534: }
4535:
4536: return ($height_param, $width_param);
4537: }
4538:
4539: sub image_size {
4540: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4541:
4542: #size of image from gif/jpg/jpeg/png
4543: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4544: if (-e $ressrc) {
4545: $src = $ressrc;
4546: }
4547: my $image = Image::Magick->new;
4548: my $current_figure = $image->Read($src);
4549: my $width_param = $image->Get('width');
4550: my $height_param = $image->Get('height');
4551: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4552: undef($image);
4553:
4554: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4555: $scaling, $parstack, $safeeval,
4556: $depth, $cis);
4557:
4558: return ($height_param, $width_param);
4559: }
4560:
4561: sub image_width {
4562: my ($height, $width) = &image_size(@_);
4563: return $width;
4564: }
4565: # Not yet 100% sure this is correct in all circumstances..
4566: # due to my uncertainty about mods to image_size.
4567: #
4568: sub image_height {
4569: my ($height, $width) = &image_size(@_);
4570: return $height;
4571: }
4572:
4573: sub get_eps_image {
4574: my ($src)=@_;
4575: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4576:
4577: # In order to prevent the substitution of the alt text, we need to
4578: # be sure the orig_src file is on system now so:
4579:
4580: if (! -e $orig_src) {
4581: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4582: }
4583: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4584: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4585: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4586: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4587: &Apache::lonxml::debug("Filelocation gives: $src");
4588: if (! -e $src) {
4589: &Apache::lonxml::debug("$src does not exist");
4590: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4591: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4592: #if replication failed try to find ps file
4593: $src=~s/\.eps$/\.ps/;
4594: &Apache::lonxml::debug("Now looking for $src");
4595: #if no ps file try to replicate it.
4596: my $didrepcopy = &Apache::lonnet::repcopy($src);
4597: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4598: if ( (not -e $src) ||
4599: ($didrepcopy ne 'ok')) {
4600: &Apache::lonxml::debug("Failed to find or replicate $src");
4601:
4602: #if replication failed try to produce eps file dynamically
4603: $src=~s/\.ps$/\.eps/;
4604: my $temp_file;
4605: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4606: my $newsrc=$orig_src;
4607: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4608: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4609: print FILE ("$newsrc\n");
4610: close(FILE);
4611: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4612: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4613: if ($sext ne "") { # Put the ext. back in to uniquify.
4614: $src =~ s/\.eps$/$sext.eps/;
4615: }
4616:
4617: }
4618:
4619: }
4620: } else {
4621: # If the postscript file has spaces in its name,
4622: # LaTeX will gratuitiously vomit. Therefore
4623: # queue such files for copy with " " replaced by "_".
4624: # printout.pm will know them by their .ps or .eps extensions.
4625: my $newsrc = $orig_src;
4626: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4627: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4628: print FILE "$src\n";
4629: close FILE;
4630: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4631: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4632: }
4633: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4634: $path =~ s/ /\_/g;
4635: $file =~ s/ /\_/g;
4636: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4637: return ($path.'/',$file);
4638: }
4639:
4640: sub eps_generation {
4641: my ($src,$file,$width_param) = @_;
4642: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4643: my $temp_file = Apache::File->new('>>'.$filename);
4644: print $temp_file "$src\n";
4645: my $newsrc = $src;
4646: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4647: $newsrc=~s{/home/httpd/html/res}{};
4648: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4649: $newsrc=~s{/\./}{/};
4650: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4651: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4652: $newsrc=~s{/home/httpd/lonUsers}{};
4653: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4654: }
4655: if ($newsrc=~m{/userfiles/}) {
4656: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4657: } else {
4658: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4659: }
4660: }
4661:
4662: sub file_path {
4663: my $src=shift;
4664: my ($file,$path);
4665: if ($src =~ m!(.*)/([^/]*)$!) {
4666: $file = $2;
4667: $path = $1.'/';
4668: }
4669: return $file,$path;
4670: }
4671:
4672:
4673: sub recalc {
4674: my $argument = shift;
4675: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4676: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4677: my $value=$1;
4678: my $units=$2;
4679: if ($units eq 'cm') {
4680: $value*=10;
4681: } elsif ($units eq 'in') {
4682: $value*=25.4;
4683: } elsif ($units eq 'pc') {
4684: $value*=(25.4*12/72.27);
4685: } elsif ($units eq 'pt') {
4686: $value*=(25.4/72.27);
4687: }
4688: return $value.' mm';
4689: }
4690:
4691: sub LATEX_length {
4692: my $garbage=shift;
4693: $garbage=~s/^\s+$//;
4694: $garbage=~s/^\s+(\S.*)/$1/;#space before
4695: $garbage=~s/(.*\S)\s+$/$1/;#space after
4696: $garbage=~s/(\s)+/$1/;#only one space
4697: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4698: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4699: $garbage=~s/([^\\])\$/$1/g;#$
4700: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4701: $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;
4702: $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;
4703: $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;
4704: $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;
4705: $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;
4706: $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;
4707: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4708: #remove some other LaTeX command
4709: $garbage=~s|\\(\w+)\\|\\|g;
4710: $garbage=~s|\\(\w+)(\s*)|$2|g;
4711: $garbage=~s|\+|11|g;
4712: my $value=length($garbage);
4713: return $value;
4714: }
4715:
4716:
4717: sub align_latex_image {
4718: my ($align, $latex_rendering, $image, $width, $height) = @_;
4719: my $currentstring; # The 1/2 wrapped image.
4720: my $closure; # The closure of the wrappage.
4721:
4722: # if it's none just return it back
4723: if ($latex_rendering eq 'none') {
4724: return ($image,'');
4725: }
4726:
4727: # If there's an alignment specification we need to honor it here.
4728: # For the horizontal alignments, we will also honor the
4729: # value of the latex specfication. The default is parbox,
4730: # and that's used for illegal values too.
4731: #
4732: # Even though we set a default alignment value, the user
4733: # could have given us an illegal value. In that case we
4734: # just use the default alignment of bottom..
4735: $currentstring = "\n% figurewrapping \n";
4736: if ($align eq "top") {
4737: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4738: $closure = '}';
4739: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4740: my $offset = $height/2;
4741: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4742: $closure = '}';
4743: } elsif ($align eq "left") {
4744: if ($latex_rendering eq "parpic") {
4745: $currentstring .= '\parpic[l]{'.$image;
4746: $closure = '}';
4747: } elsif ($latex_rendering eq "parbox") {
4748: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4749: .$image;
4750: $closure = '\end{minipage}';
4751: } elsif ($latex_rendering eq "wrapfigure"
4752: || $latex_rendering ne 'none') { # wrapfig render
4753: $currentstring .=
4754: '\begin{wrapfigure}{l}{'.$width.'mm}'
4755: .'\scalebox{1.0}{'.$image;
4756: $closure = '}\end{wrapfigure}';
4757: }
4758: } elsif ($align eq "right") {
4759: if ($latex_rendering eq "parpic") {
4760: $currentstring .= '\parpic[r]{'.$image;
4761: $closure = '}';
4762: } elsif ($latex_rendering eq "parbox") {
4763: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4764: .$image;
4765: $closure = '\end{minipage}';
4766: } elsif ($latex_rendering eq "wrapfigure"
4767: || $latex_rendering ne 'none') { # wrapfig render
4768: $currentstring .=
4769: '\begin{wrapfigure}{r}{'.$width.'mm}'
4770: .'\scalebox{1.0}{'.$image;
4771: $closure = '}\end{wrapfigure}';
4772: }
4773: } else { # Bottom is also default.
4774: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4775: $currentstring .= "{$image";
4776: $closure = '}';
4777: }
4778: $currentstring .= "\n% end wrappage\n";
4779: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4780: return ($currentstring, $closure);
4781: }
4782:
4783:
4784: sub is_inside_of {
4785: my ($tagstack, $tag) = @_;
4786: my @stack = @$tagstack;
4787: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4788: if ($stack[$i] eq $tag) {
4789: return 1;
4790: }
4791: }
4792: return 0;
4793: }
4794:
4795:
4796: #
4797: # This sub provides the typical LaTeX prefix matter for tex output:
4798: #
4799: sub latex_header
4800: {
4801: my ($mode) = @_;
4802: my $currentstring = '';
4803:
4804: $currentstring .=
4805: "\n% &Apache::lonxml::londefdef \n" .
4806: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4807: if (($env{'form.latex_type'}=~'batchmode') ||
4808: (!$env{'request.role.adv'}) ||
4809: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4810: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4811: '\renewcommand{\deg}{$^{\circ}$}'.
4812: '\usepackage{multirow}'.
4813: '\usepackage{longtable}'.
4814: '\usepackage{textcomp}'.
4815: '\usepackage{makeidx}'.
4816: '\usepackage[dvips]{graphicx}'.
4817: '\usepackage{wrapfig}'.
4818: '\usepackage{picins}'.
4819: '\usepackage[T1]{fontenc}'."\n".
4820: '\usepackage{lmodern}'."\n".
4821: '\usepackage[postscript]{ucs}'."\n".
4822: '\usepackage[utf8x]{inputenc}'."\n".
4823: '\usepackage{pifont}' ."\n".
4824: '\usepackage{latexsym}'."\n".
4825: '\usepackage{epsfig}'.
4826: "\\usepackage{xtab}\n".
4827: "\\usepackage{tabularx}\n".
4828: "\\usepackage{booktabs}\n".
4829: "\\usepackage{array}\n".
4830: "\\usepackage{colortbl}\n".
4831: "\\usepackage{xcolor}\n".
4832: '\usepackage{calc}'.
4833: '\usepackage{amsmath}'.
4834: '\usepackage{amssymb}'.
4835: '\usepackage{amsfonts}'.
4836: '\usepackage{amsthm}'.
4837: '\usepackage{amscd}'
4838: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4839: '\usepackage[T1]{fontenc}'."\n".
4840: '\usepackage{lmodern}'."\n".
4841: '\usepackage[postscript]{ucs}'."\n".
4842: '\usepackage[utf8x]{inputenc}'."\n".
4843: '\usepackage{pifont}' . "\n";
4844:
4845: if($env{'form.pdfFormFields'} eq 'yes') {
4846: $currentstring .= '\usepackage{hyperref}'.
4847: '\usepackage{eforms}'.
4848: '\usepackage{tabularx}';
4849: }
4850:
4851: $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}}'.
4852: '\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}}';
4853: $currentstring .= '\begin{document}';
4854:
4855: return $currentstring;
4856:
4857: }
4858:
4859: =pod
4860:
4861: =head1 NAME
4862:
4863: Apache::londefdef.pm
4864:
4865: =head1 SYNOPSIS
4866:
4867: Tags Default Definition Module
4868:
4869: This is part of the LearningOnline Network with CAPA project
4870: described at http://www.lon-capa.org.
4871:
4872:
4873: =head1 NOTABLE SUBROUTINES
4874:
4875: =over
4876:
4877: =item start_hideweboutput()
4878:
4879: =item end_hideweboutput()
4880:
4881: =item image_replication()
4882:
4883: =item resize_image()
4884:
4885: Get correct sizing parameter for an image given
4886: it's initial ht. and wid. This allows sizing of
4887: images that are generated on-the-fly (e.g. gnuplot)
4888: as well as serving as a utility for image_size.
4889:
4890: Parameter:
4891: height_param
4892: width_param - Initial picture dimensions.
4893: scaling - A scale factor.
4894: parstack, - the current stack of tag attributes
4895: from the xml parser
4896: safeeval, - pointer to the safespace
4897: depth, - from what level in the stack to look for attributes
4898: (assumes -1 if unspecified)
4899: cis - look for attrubutes case insensitively
4900: (assumes false)
4901:
4902: Returns:
4903: height, width - new dimensions.
4904:
4905: =item image_size()
4906:
4907: =item image_width()
4908:
4909: =item image_height()
4910:
4911: =item get_eps_image()
4912:
4913: =item eps_generation()
4914:
4915: =item file_path()
4916:
4917: =item recalc()
4918:
4919: Converts a measurement in to mm from any of
4920: the other valid LaTeX units of measure.
4921: If the units of measure are missing from the
4922: parameter, it is assumed to be in and returned
4923: with mm units of measure
4924:
4925: =item LATEX_length()
4926:
4927: =item align_latex_image()
4928:
4929: Wrap image 'stuff' inside of the LaTeX required to implement
4930: alignment:
4931: align_tex_image(align, latex_rendering, image)
4932: Where:
4933: align - The HTML alignment specification.
4934: latex_rendering - rendering hint for latex.
4935: image - The LaTeX needed to insert the image itsef.
4936: width,height - dimensions of the image.
4937: Returns:
4938: The 1/2 wrapped image and the stuff required to close the
4939: wrappage. This allows e.g. randomlabel to insert more stuff
4940: into the closure.
4941:
4942:
4943: =item is_inside_of($tagstack, $tag)
4944: This sub returns true if the current state of Xml processing is inside of the tag.
4945: Parameters:
4946: tagstack - The tagstack from the parser.
4947: tag - The tag (without the <>'s.).
4948: Sample usage:
4949: if (is_inside_of($tagstack "table")) {
4950: I'm in a table....
4951: }
4952:
4953:
4954:
4955: =back
4956:
4957: =cut
4958:
4959:
4960: 1;
4961: __END__
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