1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.409 2009/05/28 17:08:43 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' => &Apache::loncommon::authorspace(),
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:
562: my $header = '';
563: if ($env{'request.state'} ne 'published') {
564: $header=&Apache::lonmenu::constspaceform()
565: .&Apache::londefdef::edit_controls();
566: }
567: $currentstring.=&Apache::loncommon::head_subbox(
568: &Apache::loncommon::CSTR_pageheader()
569: .$header);
570: $currentstring.=&Apache::lonxml::message_location();
571: } elsif ($target eq 'tex') {
572: $currentstring = ''; # '\begin{document}' is in header.
573: }
574:
575: return $currentstring;
576: }
577:
578: sub edit_controls {
579: my ($nochgview) = @_;
580: my $result .= '
581: <form method="post">
582: <div class="LC_edit_problem_header">';
583: unless ($nochgview) {
584: $result .= '
585: <div class="LC_edit_problem_header_row1">'.
586: &Apache::lonxml::renderingoptions().'
587: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
588: </div>';
589: }
590: $result .= '
591: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" /></div>
592: </div>
593: </form>
594: ';
595: return $result;
596: }
597:
598: sub end_body {
599: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
600: my $currentstring = &end_p(); # Close off unclosed <p>
601: if ($target eq 'web' || $target eq 'webgrade') {
602: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
603: } elsif ($target eq 'tex') {
604: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
605: }
606: return $currentstring;
607: }
608:
609: # \begin{center} causes a new paragprah spacing that looks odd inside
610: # of a table cell. Same at the end of a \center but with a slightly
611: # larger space .. hence center_correction and center_end_correction.
612: #
613: sub center_correction { return '\vspace*{-6 mm}'; }
614: sub center_end_correction { return '\vspace*{-7 mm}'; }
615:
616: #-- <center> tag (end tag required)
617: sub start_center {
618: my ($target,$token,$tagstack) = @_;
619: my $currentstring = &end_p(); # Close off any prior para.
620: if ($target eq 'web' || $target eq 'webgrade') {
621: $currentstring .= $token->[4];
622: } elsif ($target eq 'tex') {
623: if (&is_inside_of($tagstack, "table")) {
624: $currentstring .= ¢er_correction();
625: }
626: $currentstring .= '\begin{center}';
627: }
628: return $currentstring;
629: }
630:
631: sub end_center {
632: my ($target,$token,$tagstack) = @_;
633: my $currentstring = '';
634: if ($target eq 'web' || $target eq 'webgrade') {
635: $currentstring = $token->[2];
636: } elsif ($target eq 'tex') {
637: $currentstring = '\end{center}';
638: if (&is_inside_of($tagstack, "table")) {
639: $currentstring .= ¢er_end_correction();
640: }
641: }
642: return $currentstring;
643: }
644:
645: #-- <b> tag (end tag required)
646: # NOTE: In TeX mode disables internal <p>
647: sub start_b {
648: my ($target,$token) = @_;
649: my $currentstring = '';
650: if ($target eq 'web' || $target eq 'webgrade') {
651: $currentstring = $token->[4];
652: } elsif ($target eq 'tex') {
653: &disable_para();
654: $currentstring .= '\textbf{';
655: }
656: return $currentstring;
657: }
658:
659: sub end_b {
660: my ($target,$token) = @_;
661: my $currentstring = '';
662: if ($target eq 'web' || $target eq 'webgrade') {
663: $currentstring = $token->[2];
664: } elsif ($target eq 'tex') {
665: &enable_para();
666: $currentstring = '}';
667: }
668: return $currentstring;
669: }
670:
671: #-- <strong> tag (end tag required)
672: # NOTE: in TeX mode disables internal <p>
673: sub start_strong {
674: my ($target,$token) = @_;
675: my $currentstring = '';
676: if ($target eq 'web' || $target eq 'webgrade') {
677: $currentstring = $token->[4];
678: } elsif ($target eq 'tex') {
679: &disable_para();
680: $currentstring = '\textbf{';
681: }
682: return $currentstring;
683: }
684:
685: sub end_strong {
686: my ($target,$token) = @_;
687: my $currentstring = '';
688: if ($target eq 'web' || $target eq 'webgrade') {
689: $currentstring = $token->[2];
690: } elsif ($target eq 'tex') {
691: &enable_para();
692: $currentstring = '}';
693: }
694: return $currentstring;
695: }
696:
697: #-- <h1> tag (end tag required)
698: sub start_h1 {
699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
700: my $currentstring = &end_p(); # Close off any prior para.
701: if ($target eq 'web' || $target eq 'webgrade') {
702: $currentstring .= $token->[4];
703: } elsif ($target eq 'tex') {
704: my $pre;
705: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
706: if ($align eq 'center') {
707: $pre='\begin{center}';
708: } elsif ($align eq 'left') {
709: $pre='\rlap{';
710: } elsif ($align eq 'right') {
711: $pre=' \hfill \llap{';
712: }
713: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
714: if (not defined $TeXsize) {$TeXsize="large";}
715: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
716: } elsif ($target eq 'meta') {
717: $currentstring.='<subject>';
718: &start_output($target);
719: }
720: return $currentstring;
721: }
722:
723: sub end_h1 {
724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
725: my $currentstring = '';
726: if ($target eq 'web' || $target eq 'webgrade') {
727: $currentstring .= $token->[2];
728: } elsif ($target eq 'tex') {
729: my $post='\vskip 0 mm ';
730: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
731: if ($align eq 'center') {
732: $post='\end{center}';
733: } elsif ($align eq 'left') {
734: $post='} \hfill'.'\vskip 0 mm ';
735: } elsif ($align eq 'right') {
736: $post='}'.'\vskip 0 mm ';
737: }
738: $currentstring .= '}}'.$post;
739: } elsif ($target eq 'meta') {
740: &end_output($target);
741: $currentstring='</subject>';
742: }
743: return $currentstring;
744: }
745:
746: #-- <h2> tag
747: sub start_h2 {
748: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
749: my $currentstring = &end_p(); # Close off any prior para.
750: if ($target eq 'web' || $target eq 'webgrade') {
751: $currentstring .= $token->[4];
752: } elsif ($target eq 'tex') {
753: my $pre;
754: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
755: if ($align eq 'center') {
756: $pre='\begin{center}';
757: } elsif ($align eq 'left') {
758: $pre='\rlap{';
759: } elsif ($align eq 'right') {
760: $pre=' \hfill \llap{';
761: }
762: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
763: if (not defined $TeXsize) {$TeXsize="large";}
764: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
765: }
766: return $currentstring;
767: }
768:
769: sub end_h2 {
770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
771: my $currentstring = '';
772: if ($target eq 'web' || $target eq 'webgrade') {
773: $currentstring .= $token->[2];
774: } elsif ($target eq 'tex') {
775: my $post='\vskip 0 mm ';
776: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
777: if ($align eq 'center') {
778: $post='\end{center}';
779: } elsif ($align eq 'left') {
780: $post='} \hfill'.'\vskip 0 mm ';
781: } elsif ($align eq 'right') {
782: $post='}'.'\vskip 0 mm ';
783: }
784: $currentstring .= '}}'.$post;
785: }
786: return $currentstring;
787: }
788:
789: #-- <h3> tag
790: sub start_h3 {
791: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
792: my $currentstring = &end_p(); # Close off any prior para.
793: if ($target eq 'web' || $target eq 'webgrade') {
794: $currentstring .= $token->[4];
795: } elsif ($target eq 'tex') {
796: my $pre;
797: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
798: if ($align eq 'center') {
799: $pre='\begin{center}';
800: } elsif ($align eq 'left') {
801: $pre='\rlap{';
802: } elsif ($align eq 'right') {
803: $pre=' \hfill \llap{';
804: }
805: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
806: if (not defined $TeXsize) {$TeXsize="large";}
807: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
808: }
809: return $currentstring;
810: }
811:
812: sub end_h3 {
813: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
814: my $currentstring = '';
815: if ($target eq 'web' || $target eq 'webgrade') {
816: $currentstring .= $token->[2];
817: } elsif ($target eq 'tex') {
818: my $post='\vskip 0 mm ';
819: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
820: if ($align eq 'center') {
821: $post='\end{center}';
822: } elsif ($align eq 'left') {
823: $post='} \hfill'.'\vskip 0 mm ';
824: } elsif ($align eq 'right') {
825: $post='}'.'\vskip 0 mm ';
826: }
827: $currentstring .= '}}'.$post;
828: }
829: return $currentstring;
830: }
831:
832: #-- <h4> tag
833: sub start_h4 {
834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
835: my $currentstring = &end_p(); # Close off any prior para.
836: if ($target eq 'web' || $target eq 'webgrade') {
837: $currentstring .= $token->[4];
838: } elsif ($target eq 'tex') {
839: my $pre;
840: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
841: if ($align eq 'center') {
842: $pre='\begin{center}';
843: } elsif ($align eq 'left') {
844: $pre='\rlap{';
845: } elsif ($align eq 'right') {
846: $pre=' \hfill \llap{';
847: }
848: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
849: if (not defined $TeXsize) {$TeXsize="large";}
850: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
851: }
852: return $currentstring;
853: }
854:
855: sub end_h4 {
856: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
857: my $currentstring = '';
858: if ($target eq 'web' || $target eq 'webgrade') {
859: $currentstring .= $token->[2];
860: } elsif ($target eq 'tex') {
861: my $post='\vskip 0 mm ';
862: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
863: if ($align eq 'center') {
864: $post='\end{center}';
865: } elsif ($align eq 'left') {
866: $post='} \hfill'.'\vskip 0 mm ';
867: } elsif ($align eq 'right') {
868: $post='}'.'\vskip 0 mm ';
869: }
870: $currentstring .= '}}'.$post;
871: }
872: return $currentstring;
873: }
874:
875: #-- <h5> tag
876: sub start_h5 {
877: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
878: my $currentstring = &end_p(); # Close off any prior paras.
879: if ($target eq 'web' || $target eq 'webgrade') {
880: $currentstring .= $token->[4];
881: } elsif ($target eq 'tex') {
882: my $pre;
883: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
884: if ($align eq 'center') {
885: $pre='\begin{center}';
886: } elsif ($align eq 'left') {
887: $pre='\rlap{';
888: } elsif ($align eq 'right') {
889: $pre=' \hfill \llap{';
890: }
891: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
892: if (not defined $TeXsize) {$TeXsize="large";}
893: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
894: }
895: return $currentstring;
896: }
897:
898: sub end_h5 {
899: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
900: my $currentstring = '';
901: if ($target eq 'web' || $target eq 'webgrade') {
902: $currentstring .= $token->[2];
903: } elsif ($target eq 'tex') {
904: my $post='\vskip 0 mm ';
905: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
906: if ($align eq 'center') {
907: $post='\end{center}';
908: } elsif ($align eq 'left') {
909: $post='} \hfill'.'\vskip 0 mm ';
910: } elsif ($align eq 'right') {
911: $post='}'.'\vskip 0 mm ';
912: }
913: $currentstring .= '}}'.$post;
914: }
915: return $currentstring;
916: }
917:
918: #-- <h6> tag
919: sub start_h6 {
920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
921: my $currentstring = &end_p(); # Close off any prior paras.
922: if ($target eq 'web' || $target eq 'webgrade') {
923: $currentstring .= $token->[4];
924: } elsif ($target eq 'tex') {
925: my $pre;
926: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
927: if ($align eq 'center') {
928: $pre='\begin{center}';
929: } elsif ($align eq 'left') {
930: $pre='\rlap{';
931: } elsif ($align eq 'right') {
932: $pre=' \hfill \llap{';
933: }
934: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
935: if (not defined $TeXsize) {$TeXsize="large";}
936: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
937: }
938: return $currentstring;
939: }
940:
941: sub end_h6 {
942: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
943: my $currentstring = '';
944: if ($target eq 'web' || $target eq 'webgrade') {
945: $currentstring .= $token->[2];
946: } elsif ($target eq 'tex') {
947: my $post='\vskip 0 mm ';
948: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
949: if ($align eq 'center') {
950: $post='\end{center}';
951: } elsif ($align eq 'left') {
952: $post='} \hfill'.'\vskip 0 mm ';
953: } elsif ($align eq 'right') {
954: $post='}'.'\vskip 0 mm ';
955: }
956: $currentstring .= '}}'.$post;
957: }
958: return $currentstring;
959: }
960:
961: #--- <cite> tag (end tag required)
962: sub start_cite {
963: my ($target,$token) = @_;
964: my $currentstring = '';
965: if ($target eq 'web' || $target eq 'webgrade') {
966: $currentstring .= $token->[4];
967: } elsif ($target eq 'tex') {
968: $currentstring .= '\textit{';
969: }
970: return $currentstring;
971: }
972:
973: sub end_cite {
974: my ($target,$token) = @_;
975: my $currentstring = '';
976: if ($target eq 'web' || $target eq 'webgrade') {
977: $currentstring .= $token->[2];
978: } elsif ($target eq 'tex') {
979: $currentstring .= '}';
980: }
981: return $currentstring;
982: }
983:
984: #-- <i> tag (end tag required)
985: sub start_i {
986: my ($target,$token) = @_;
987: my $currentstring = '';
988: if ($target eq 'web' || $target eq 'webgrade') {
989: $currentstring .= $token->[4];
990: } elsif ($target eq 'tex') {
991: $currentstring .= '\textit{';
992: }
993: return $currentstring;
994: }
995:
996: sub end_i {
997: my ($target,$token) = @_;
998: my $currentstring = '';
999: if ($target eq 'web' || $target eq 'webgrade') {
1000: $currentstring .= $token->[2];
1001: } elsif ($target eq 'tex') {
1002: $currentstring .= '}';
1003: }
1004: return $currentstring;
1005: }
1006:
1007: #-- <address> tag (end tag required)
1008: sub start_address {
1009: my ($target,$token) = @_;
1010: my $currentstring = '';
1011: if ($target eq 'web' || $target eq 'webgrade') {
1012: $currentstring .= $token->[4];
1013: } elsif ($target eq 'tex') {
1014: $currentstring .= '\textit{';
1015: }
1016: return $currentstring;
1017: }
1018:
1019: sub end_address {
1020: my ($target,$token) = @_;
1021: my $currentstring = '';
1022: if ($target eq 'web' || $target eq 'webgrade') {
1023: $currentstring .= $token->[2];
1024: } elsif ($target eq 'tex') {
1025: $currentstring .= '}';
1026: }
1027: return $currentstring;
1028: }
1029:
1030: #-- <dfn> tag (end tag required)
1031: sub start_dfn {
1032: my ($target,$token) = @_;
1033: my $currentstring = '';
1034: if ($target eq 'web' || $target eq 'webgrade') {
1035: $currentstring .= $token->[4];
1036: } elsif ($target eq 'tex') {
1037: $currentstring .= '\textit{';
1038: }
1039: return $currentstring;
1040: }
1041:
1042: sub end_dfn {
1043: my ($target,$token) = @_;
1044: my $currentstring = '';
1045: if ($target eq 'web' || $target eq 'webgrade') {
1046: $currentstring .= $token->[2];
1047: } elsif ($target eq 'tex') {
1048: $currentstring .= '}';
1049: }
1050: return $currentstring;
1051: }
1052:
1053: #-- <tt> tag (end tag required)
1054: sub start_tt {
1055: my ($target,$token) = @_;
1056: my $currentstring = '';
1057: if ($target eq 'web' || $target eq 'webgrade') {
1058: $currentstring .= $token->[4];
1059: } elsif ($target eq 'tex') {
1060: $currentstring .= '\texttt{';
1061: }
1062: return $currentstring;
1063: }
1064:
1065: sub end_tt {
1066: my ($target,$token) = @_;
1067: my $currentstring = '';
1068: if ($target eq 'web' || $target eq 'webgrade') {
1069: $currentstring .= $token->[2];
1070: } elsif ($target eq 'tex') {
1071: $currentstring .= '}';
1072: }
1073: return $currentstring;
1074: }
1075:
1076: #-- <kbd> tag (end tag required)
1077: sub start_kbd {
1078: my ($target,$token) = @_;
1079: my $currentstring = '';
1080: if ($target eq 'web' || $target eq 'webgrade') {
1081: $currentstring .= $token->[4];
1082: } elsif ($target eq 'tex') {
1083: $currentstring .= '\texttt{';
1084: }
1085: return $currentstring;
1086: }
1087:
1088: sub end_kbd {
1089: my ($target,$token) = @_;
1090: my $currentstring = '';
1091: if ($target eq 'web' || $target eq 'webgrade') {
1092: $currentstring .= $token->[2];
1093: } elsif ($target eq 'tex') {
1094: $currentstring .= '}';
1095: }
1096: return $currentstring;
1097: }
1098:
1099: #-- <code> tag (end tag required)
1100: sub start_code {
1101: my ($target,$token) = @_;
1102: my $currentstring = '';
1103: if ($target eq 'web' || $target eq 'webgrade') {
1104: $currentstring .= $token->[4];
1105: } elsif ($target eq 'tex') {
1106: $currentstring .= '\texttt{';
1107: }
1108: return $currentstring;
1109: }
1110:
1111: sub end_code {
1112: my ($target,$token) = @_;
1113: my $currentstring = '';
1114: if ($target eq 'web' || $target eq 'webgrade') {
1115: $currentstring .= $token->[2];
1116: } elsif ($target eq 'tex') {
1117: $currentstring .= '}';
1118: }
1119: return $currentstring;
1120: }
1121:
1122: #-- <em> tag (end tag required)
1123: sub start_em {
1124: my ($target,$token) = @_;
1125: my $currentstring = '';
1126: if ($target eq 'web' || $target eq 'webgrade') {
1127: $currentstring .= $token->[4];
1128: } elsif ($target eq 'tex') {
1129: $currentstring .= '\emph{';
1130: }
1131: return $currentstring;
1132: }
1133:
1134: sub end_em {
1135: my ($target,$token) = @_;
1136: my $currentstring = '';
1137: if ($target eq 'web' || $target eq 'webgrade') {
1138: $currentstring .= $token->[2];
1139: } elsif ($target eq 'tex') {
1140: $currentstring .= '}';
1141: }
1142: return $currentstring;
1143: }
1144:
1145: #-- <q> tag (end tag required)
1146: sub start_q {
1147: my ($target,$token) = @_;
1148: my $currentstring = '';
1149: if ($target eq 'web' || $target eq 'webgrade') {
1150: $currentstring .= $token->[4];
1151: } elsif ($target eq 'tex') {
1152: $currentstring .= '\emph{';
1153: }
1154: return $currentstring;
1155: }
1156:
1157: sub end_q {
1158: my ($target,$token) = @_;
1159: my $currentstring = '';
1160: if ($target eq 'web' || $target eq 'webgrade') {
1161: $currentstring .= $token->[2];
1162: } elsif ($target eq 'tex') {
1163: $currentstring .= '}';
1164: }
1165: return $currentstring;
1166: }
1167:
1168: # <p> is a bit strange since it does not require a closing </p>
1169: # However in latex, we must often output closing stuff to end
1170: # environments and {}'s etc. Therefore we do all the work
1171: # of figuring out the ending strings in the start tag processing,
1172: # and provide a mechanism to output the stop text external
1173: # to tag processing.
1174: #
1175: {
1176:
1177: my $closing_string = ''; # String required to close <p>
1178:
1179: # Some tags are <p> fragile meaning that <p> inside of them
1180: # does not work within TeX mode. This is managed via the
1181: # counter below:
1182: #
1183:
1184: my $para_disabled = 0;
1185:
1186: sub disable_para {
1187: $para_disabled++;
1188: }
1189: sub enable_para {
1190: $para_disabled--;
1191: }
1192:
1193:
1194: #-- <p> tag (end tag optional)
1195: #optional attribute - align="center|left|right"
1196: sub start_p {
1197: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1198: my $currentstring = '';
1199: if ($target eq 'web' || $target eq 'webgrade') {
1200: $currentstring .= &end_p(); # close off prior para if in progress.
1201: $currentstring .= $token->[4];
1202: if (! ($currentstring =~ /\//)) {
1203: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1204: }
1205: } elsif ($target eq 'tex' && !$para_disabled) {
1206:
1207: $currentstring .= &end_p(); # close off prior para if in progress.
1208: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1209: if ($align eq 'center') {
1210: $currentstring .='\begin{center}\par ';
1211: $closing_string = '\end{center}';
1212: if (&is_inside_of($tagstack, "table")) {
1213: $currentstring = ¢er_correction().$currentstring;
1214: }
1215: } elsif ($align eq 'right') {
1216: $currentstring.="\n".'{\flushright ';
1217: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1218: $closing_string= "}\n";
1219: } elsif ($align eq 'left') {
1220: $currentstring.= "\n".'{\flushleft ';
1221: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1222: $closing_string = "}\n";
1223: } else {
1224: $currentstring.='\par ';
1225: if (&is_inside_of($tagstack, 'table')) {
1226: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1227: } else {
1228: $closing_string = '\strut\\\\\strut ';
1229: }
1230: }
1231:
1232: }
1233: return $currentstring;
1234: }
1235: #
1236: # End paragraph processing just requires that we output the
1237: # closing string that was saved and blank it.
1238: sub end_p {
1239: # Note only 'tex' mode uses disable_para and enable_para
1240: # so we don't need to know the target in the check below:
1241:
1242: if (!$para_disabled) {
1243: my $current_string = $closing_string;
1244: $closing_string = ''; # Not in a para anymore.
1245: return $current_string;
1246: } else {
1247: return '';
1248: }
1249:
1250: }
1251: }
1252: #-- <br> tag (end tag forbidden)
1253: sub start_br {
1254: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1255: my $currentstring = '';
1256: if ($target eq 'web' || $target eq 'webgrade') {
1257: $currentstring .= $token->[4];
1258: } elsif ($target eq 'tex') {
1259: my @tempo=@$tagstack;
1260: my $signal=0;
1261: # Not going to factor this to is_inside_of since that would require
1262: # multiple stack traversals.
1263: #
1264: for (my $i=$#tempo;$i>=0;$i--) {
1265: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1266: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1267: $signal=1;
1268: }
1269: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1270: $signal = 1;
1271: }
1272: }
1273: if ($signal != 1) {
1274: $currentstring .= '\strut \\\\ \strut ';
1275: }
1276:
1277: }
1278: return $currentstring;
1279: }
1280:
1281: sub end_br {
1282: my ($target,$token) = @_;
1283: my $currentstring = '';
1284: if ($target eq 'web' || $target eq 'webgrade') {
1285: $currentstring .= $token->[2];
1286: }
1287: return $currentstring;
1288: }
1289:
1290: #-- <big> tag (end tag required)
1291: sub start_big {
1292: my ($target,$token) = @_;
1293: my $currentstring = '';
1294: if ($target eq 'web' || $target eq 'webgrade') {
1295: $currentstring .= $token->[4];
1296: } elsif ($target eq 'tex') {
1297: $currentstring .= '{\large ';
1298: }
1299: return $currentstring;
1300: }
1301:
1302: sub end_big {
1303: my ($target,$token) = @_;
1304: my $currentstring = '';
1305: if ($target eq 'web' || $target eq 'webgrade') {
1306: $currentstring .= $token->[2];
1307: } elsif ($target eq 'tex') {
1308: $currentstring .= '}';
1309: }
1310: return $currentstring;
1311: }
1312:
1313: #-- <small> tag (end tag required)
1314: sub start_small {
1315: my ($target,$token) = @_;
1316: my $currentstring = '';
1317: if ($target eq 'web' || $target eq 'webgrade') {
1318: $currentstring .= $token->[4];
1319: } elsif ($target eq 'tex') {
1320: $currentstring .= '{\footnotesize ';
1321: }
1322: return $currentstring;
1323: }
1324:
1325: sub end_small {
1326: my ($target,$token) = @_;
1327: my $currentstring = '';
1328: if ($target eq 'web' || $target eq 'webgrade') {
1329: $currentstring .= $token->[2];
1330: } elsif ($target eq 'tex') {
1331: $currentstring .= '}';
1332: }
1333: return $currentstring;
1334: }
1335:
1336: #-- <basefont> tag (end tag forbidden)
1337: sub start_basefont {
1338: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1339: my $currentstring = '';
1340: if ($target eq 'web' || $target eq 'webgrade') {
1341: $currentstring = $token->[4];
1342: } elsif ($target eq 'tex') {
1343: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1344: if (defined $basesize) {
1345: $currentstring = '{\\'.$basesize.' ';
1346: }
1347: }
1348: return $currentstring;
1349: }
1350:
1351: sub end_basefont {
1352: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1353: my $currentstring = '';
1354: if ($target eq 'web' || $target eq 'webgrade') {
1355: $currentstring = $token->[4];
1356: } elsif ($target eq 'tex') {
1357: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1358: if (defined $basesize) {
1359: $currentstring = '}';
1360: }
1361: }
1362: return $currentstring;
1363: }
1364:
1365: #-- <font> tag (end tag required)
1366: sub start_font {
1367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1368: my $currentstring = '';
1369: if ($target eq 'web' || $target eq 'webgrade') {
1370: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1371: $currentstring = $token->[4];
1372: } elsif ($target eq 'tex') {
1373: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1374: if (defined $fontsize) {
1375: $currentstring = '{\\'.$fontsize.' ';
1376: }
1377: }
1378: return $currentstring;
1379: }
1380:
1381: sub end_font {
1382: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1383: my $currentstring = '';
1384: if ($target eq 'web' || $target eq 'webgrade') {
1385: $currentstring = $token->[2];
1386: } elsif ($target eq 'tex') {
1387: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1388: if (defined $fontsize) {
1389: $currentstring = '}';
1390: }
1391: }
1392: return $currentstring;
1393: }
1394:
1395: #-- <strike> tag (end tag required)
1396: sub start_strike {
1397: my ($target,$token) = @_;
1398: my $currentstring = '';
1399: if ($target eq 'web' || $target eq 'webgrade') {
1400: $currentstring .= $token->[4];
1401: } elsif ($target eq 'tex') {
1402: &Apache::lonxml::startredirection();
1403: }
1404: return $currentstring;
1405: }
1406:
1407: sub end_strike {
1408: my ($target,$token) = @_;
1409: my $currentstring = '';
1410: if ($target eq 'web' || $target eq 'webgrade') {
1411: $currentstring .= $token->[2];
1412: } elsif ($target eq 'tex') {
1413: $currentstring=&Apache::lonxml::endredirection();
1414: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1415: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1416: $currentstring=~s/(\S)\s*$/$1\}/;
1417: }
1418: return $currentstring;
1419: }
1420:
1421: #-- <s> tag (end tag required)
1422: sub start_s {
1423: my ($target,$token) = @_;
1424: my $currentstring = '';
1425: if ($target eq 'web' || $target eq 'webgrade') {
1426: $currentstring .= $token->[4];
1427: } elsif ($target eq 'tex') {
1428: &Apache::lonxml::startredirection();
1429: }
1430: return $currentstring;
1431: }
1432:
1433: sub end_s {
1434: my ($target,$token) = @_;
1435: my $currentstring = '';
1436: if ($target eq 'web' || $target eq 'webgrade') {
1437: $currentstring .= $token->[2];
1438: } elsif ($target eq 'tex') {
1439: $currentstring=&Apache::lonxml::endredirection();
1440: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1441: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1442: $currentstring=~s/(\S)\s*$/$1\}/;
1443: }
1444: return $currentstring;
1445: }
1446:
1447: #-- <sub> tag (end tag required)
1448: sub start_sub {
1449: my ($target,$token) = @_;
1450: my $currentstring = '';
1451: if ($target eq 'web' || $target eq 'webgrade') {
1452: $currentstring .= $token->[4];
1453: } elsif ($target eq 'tex') {
1454: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1455: }
1456: return $currentstring;
1457: }
1458:
1459: sub end_sub {
1460: my ($target,$token) = @_;
1461: my $currentstring = '';
1462: if ($target eq 'web' || $target eq 'webgrade') {
1463: $currentstring .= $token->[2];
1464: } elsif ($target eq 'tex') {
1465: $currentstring .= '}}';
1466: }
1467: return $currentstring;
1468: }
1469:
1470: #-- <sup> tag (end tag required)
1471: sub start_sup {
1472: my ($target,$token) = @_;
1473: my $currentstring = '';
1474: if ($target eq 'web' || $target eq 'webgrade') {
1475: $currentstring .= $token->[4];
1476: } elsif ($target eq 'tex') {
1477: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1478: }
1479: return $currentstring;
1480: }
1481:
1482: sub end_sup {
1483: my ($target,$token) = @_;
1484: my $currentstring = '';
1485: if ($target eq 'web' || $target eq 'webgrade') {
1486: $currentstring .= $token->[2];
1487: } elsif ($target eq 'tex') {
1488: $currentstring .= '}}';
1489: }
1490: return $currentstring;
1491: }
1492:
1493: #-- <hr> tag (end tag forbidden)
1494: sub start_hr {
1495: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1496: my $currentstring = &end_p(); # End enclosing para.
1497: if ($target eq 'web' || $target eq 'webgrade') {
1498: $currentstring .= $token->[4];
1499: } elsif ($target eq 'tex') {
1500:
1501: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1502: #
1503: my $restart_sub = 0;
1504: my $restart_sup = 0;
1505:
1506: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1507: # using the start_ stop_ functions.. those tags only care about
1508: # $target.
1509:
1510: if (&is_inside_of($tagstack, "sub")) {
1511: $restart_sub = 1;
1512: $currentstring .= &end_sub($target, $token, $tagstack,
1513: $parstack, $parser, $safeeval);
1514: }
1515: if (&is_inside_of($tagstack, "sup")) {
1516: $restart_sup = 1;
1517: $currentstring .= &end_sup($target, $token, $tagstack,
1518: $parstack, $parser, $safeeval);
1519: }
1520:
1521: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1522: if (defined $LaTeXwidth) {
1523: if ($LaTeXwidth=~/^%/) {
1524: substr($LaTeXwidth,0,1)='';
1525: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1526: }
1527: } else {
1528: $LaTeXwidth ='0.9\textwidth';
1529: }
1530: my ($pre,$post);
1531: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1532: if (($align eq 'center') || (not defined $align)) {
1533: $pre=''; $post='';
1534: } elsif ($align eq 'left') {
1535: $pre='\rlap{'; $post='} \hfill';
1536: } elsif ($align eq 'right') {
1537: $pre=' \hfill \llap{'; $post='}';
1538: }
1539: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1540: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1541: # Turn stuff back on that we can't be inside of.
1542:
1543: if ($restart_sub) {
1544: $currentstring .= &start_sub($target, $token, $tagstack,
1545: $parstack, $parser, $safeeval);
1546: }
1547: if ($restart_sup) {
1548: $currentstring .= &start_sup($target, $token, $tagstack,
1549: $parstack, $parser, $safeeval);
1550: }
1551: }
1552: return $currentstring;
1553: }
1554:
1555: sub end_hr {
1556: my ($target,$token) = @_;
1557: my $currentstring = '';
1558: if ($target eq 'web' || $target eq 'webgrade') {
1559: $currentstring .= $token->[2];
1560: }
1561: return $currentstring;
1562: }
1563:
1564: #-- <div> tag (end tag required)
1565: {
1566:
1567: # Since div can be nested, the stack below is used
1568: # in 'tex' mode to store the ending strings
1569: # for the div stack.
1570:
1571: my @div_end_stack;
1572:
1573: sub start_div {
1574: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1575: my $currentstring = &end_p(); # Close enclosing para.
1576: if ($target eq 'web' || $target eq 'webgrade') {
1577: $currentstring .= $token->[4];
1578: }
1579: if ($target eq 'tex') {
1580: # 4 possible alignments: left, right, center, and -missing-.
1581: # If inside a table row, we must let the table logic
1582: # do the alignment, however.
1583: #
1584:
1585: my $endstring = '';
1586:
1587: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1588: $safeeval, undef, 1));
1589: if ($align eq 'center') {
1590: $currentstring .= '\begin{center}';
1591: $endstring = '\end{center}';
1592: if (&is_inside_of($tagstack, "table")) {
1593: $currentstring = ¢er_correction().$currentstring;
1594: $endstring .= ¢er_end_correction();
1595: }
1596: }
1597: elsif ($align eq 'right') {
1598: $currentstring .= '\begin{flushright}';
1599: $endstring .= '\end{flushright}';
1600: } elsif ($align eq 'left') {
1601: $currentstring .= '\begin{flushleft}';
1602: $endstring = '\end{flushleft}';
1603: } else {
1604:
1605: }
1606: $currentstring .= "\n"; # For human readability.
1607: $endstring = "\n$endstring\n"; # For human readability
1608: push(@div_end_stack, $endstring);
1609: }
1610: return $currentstring;
1611: }
1612:
1613: sub end_div {
1614: my ($target,$token) = @_;
1615: my $currentstring = '';
1616: if ($target eq 'web' || $target eq 'webgrade') {
1617: $currentstring .= $token->[2];
1618: }
1619: if ($target eq 'tex') {
1620: my $endstring = pop @div_end_stack;
1621: $currentstring .= $endstring;
1622: }
1623: return $currentstring;
1624: }
1625: }
1626:
1627: #-- <a> tag (end tag required)
1628: sub start_a {
1629: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1630: my $currentstring = '';
1631: if ($target eq 'web' || $target eq 'webgrade') {
1632: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1633: undef,1);
1634: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1635: if ($href =~ /\S/) {
1636: if ($href !~ m{^https?://}) {
1637: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1638: my $linkurl;
1639: if ($href =~ m{^/uploaded/}) {
1640: $linkurl = $href;
1641: } elsif ($href =~ m{^[^/]}) {
1642: my $path = $url;
1643: $path =~ s{[^/]*$}{};
1644: $linkurl = $path.$href;
1645: }
1646: if ($linkurl =~ m{^/uploaded/}) {
1647: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1648: if (&Apache::lonnet::is_on_map($url)) {
1649: &Apache::lonxml::extlink($linkurl);
1650: }
1651: }
1652: }
1653: }
1654: }
1655: }
1656: return $currentstring;
1657: }
1658:
1659: sub end_a {
1660: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1661: my $currentstring = '';
1662: if ($target eq 'web' || $target eq 'webgrade') {
1663: $currentstring .= $token->[2];
1664: }
1665: if ($target eq 'tex') {
1666: my $href =
1667: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1668: my $name =
1669: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1670: my $uriprint =
1671: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1672: my $anchorprint =
1673: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1674: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1675: $href =~ s/([^\\])%/$1\\\%/g;
1676: # Substitute special symbols... and allow line breaks at each /
1677: #
1678: $href = &Apache::lonxml::latex_special_symbols($href);
1679: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1680: $currentstring .= ' ({\tt URI:'.$href.'})';
1681: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1682: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1683: } else {
1684: $currentstring.='';
1685: }
1686: }
1687: return $currentstring;
1688: }
1689:
1690: #-- <li> tag (end tag optional)
1691: sub start_li {
1692: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1693: my $currentstring = '';
1694: if ($target eq 'web' || $target eq 'webgrade') {
1695: $currentstring = $token->[4];
1696: } elsif ($target eq 'tex') {
1697: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1698: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1699: #FIXME need to support types i and I
1700: if ($type=~/disc/) {
1701: $currentstring .= ' \item[$\bullet$] ';
1702: } elsif ($type=~/circle/) {
1703: $currentstring .= ' \item[$\circ$] ';
1704: } elsif ($type=~/square/) {
1705: $currentstring .= ' \item[$\diamond$] ';
1706: } elsif ($type eq '1') {
1707: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1708: } elsif ($type eq 'A') {
1709: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1710: } elsif ($type eq 'a') {
1711: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1712: } elsif ($value ne '') {
1713: $currentstring .= ' \item['.$value.'] ';
1714: } else {
1715: $currentstring .= ' \item ';
1716: }
1717: $Apache::londefdef::list_index++;
1718: }
1719: return $currentstring;
1720: }
1721:
1722: sub end_li {
1723: my ($target,$token) = @_;
1724: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1725: if ($target eq 'web' || $target eq 'webgrade') {
1726: $currentstring .= $token->[2];
1727: }
1728: return $currentstring;
1729: }
1730:
1731: #-- <u> tag (end tag required)
1732: sub start_u {
1733: my ($target,$token) = @_;
1734: my $currentstring = '';
1735: if ($target eq 'web' || $target eq 'webgrade') {
1736: $currentstring .= $token->[4];
1737: } elsif ($target eq 'tex') {
1738: &Apache::lonxml::startredirection();
1739: }
1740: return $currentstring;
1741: }
1742:
1743: sub end_u {
1744: my ($target,$token) = @_;
1745: my $currentstring = '';
1746: if ($target eq 'web' || $target eq 'webgrade') {
1747: $currentstring .= $token->[2];
1748: } elsif ($target eq 'tex') {
1749: $currentstring=&Apache::lonxml::endredirection();
1750: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1751: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1752: $currentstring=~s/(\S)\s*$/$1\}/;
1753: }
1754: return $currentstring;
1755: }
1756:
1757: #-- <ul> tag (end tag required)
1758: sub start_ul {
1759: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1760: my $currentstring = &end_p(); # Close off enclosing list.
1761: if ($target eq 'web' || $target eq 'webgrade') {
1762: $currentstring .= $token->[4];
1763: } elsif ($target eq 'tex') {
1764: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1765: $Apache::londefdef::list_index=0;
1766: if ($TeXtype eq 'disc') {
1767: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1768: '\renewcommand{\labelitemii}{$\bullet$}'.
1769: '\renewcommand{\labelitemiii}{$\bullet$}'.
1770: '\renewcommand{\labelitemiv}{$\bullet$}';
1771: } elsif ($TeXtype eq 'circle') {
1772: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1773: '\renewcommand{\labelitemii}{$\circ$}'.
1774: '\renewcommand{\labelitemiii}{$\circ$}'.
1775: '\renewcommand{\labelitemiv}{$\circ$}';
1776: } elsif ($TeXtype eq 'square') {
1777: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1778: '\renewcommand{\labelitemii}{$\diamond$}'.
1779: '\renewcommand{\labelitemiii}{$\diamond$}'.
1780: '\renewcommand{\labelitemiv}{$\diamond$}';
1781: }
1782: $currentstring .= '\strut \begin{itemize}';
1783: }
1784: return $currentstring;
1785: }
1786:
1787: sub end_ul {
1788: my ($target,$token) = @_;
1789: my $currentstring = '';
1790: if ($target eq 'web' || $target eq 'webgrade') {
1791: $currentstring = $token->[2];
1792: } elsif ($target eq 'tex') {
1793: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1794: '\renewcommand{\labelitemii}{$\bullet$}'.
1795: '\renewcommand{\labelitemiii}{$\bullet$}'.
1796: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1797: }
1798: return $currentstring;
1799: }
1800:
1801: #-- <menu> tag (end tag required)
1802: sub start_menu {
1803: my ($target,$token) = @_;
1804: my $currentstring = '';
1805: if ($target eq 'web' || $target eq 'webgrade') {
1806: $currentstring = $token->[4];
1807: } elsif ($target eq 'tex') {
1808: $currentstring = " \\begin{itemize} ";
1809: }
1810: return $currentstring;
1811: }
1812:
1813: sub end_menu {
1814: my ($target,$token) = @_;
1815: my $currentstring = '';
1816: if ($target eq 'web' || $target eq 'webgrade') {
1817: $currentstring = $token->[2];
1818: } elsif ($target eq 'tex') {
1819: $currentstring = " \\end{itemize}";
1820: }
1821: return $currentstring;
1822: }
1823:
1824: #-- <dir> tag (end tag required)
1825: sub start_dir {
1826: my ($target,$token) = @_;
1827: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1828: if ($target eq 'web' || $target eq 'webgrade') {
1829: $currentstring .= $token->[4];
1830: } elsif ($target eq 'tex') {
1831: $currentstring .= " \\begin{itemize} ";
1832: }
1833: return $currentstring;
1834: }
1835:
1836: sub end_dir {
1837: my ($target,$token) = @_;
1838: my $currentstring = '';
1839: if ($target eq 'web' || $target eq 'webgrade') {
1840: $currentstring = $token->[2];
1841: } elsif ($target eq 'tex') {
1842: $currentstring = " \\end{itemize}";
1843: }
1844: return $currentstring;
1845: }
1846:
1847: #-- <ol> tag (end tag required)
1848: sub start_ol {
1849: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1850: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1851: if ($target eq 'web' || $target eq 'webgrade') {
1852: $currentstring .= $token->[4];
1853: } elsif ($target eq 'tex') {
1854: $Apache::londefdef::list_index=0;
1855: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1856: if ($type eq '1') {
1857: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1858: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1859: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1860: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1861: } elsif ($type eq 'A') {
1862: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1863: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1864: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1865: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1866: } elsif ($type eq 'a') {
1867: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1868: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1869: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1870: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1871: } elsif ($type eq 'i') {
1872: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1873: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1874: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1875: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1876: } elsif ($type eq 'I') {
1877: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1878: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1879: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1880: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1881: }
1882: $currentstring .= '\strut \begin{enumerate}';
1883: }
1884: return $currentstring;
1885: }
1886:
1887: sub end_ol {
1888: my ($target,$token) = @_;
1889: my $currentstring = '';
1890: if ($target eq 'web' || $target eq 'webgrade') {
1891: $currentstring = $token->[2];
1892: } elsif ($target eq 'tex') {
1893: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1894: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1895: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1896: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1897: }
1898: return $currentstring;
1899: }
1900:
1901: #-- <dl> tag (end tag required)
1902: sub start_dl {
1903: my ($target,$token) = @_;
1904: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1905: if ($target eq 'web' || $target eq 'webgrade') {
1906: $currentstring .= $token->[4];
1907: } elsif ($target eq 'tex') {
1908: $currentstring .= '\begin{description}';
1909: $Apache::londefdef::DL++;
1910: push(@Apache::londefdef::description,[]);
1911: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1912: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1913: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1914: }
1915: return $currentstring;
1916: }
1917:
1918: sub end_dl {
1919: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1920: my $currentstring = '';
1921: if ($target eq 'web' || $target eq 'webgrade') {
1922: $currentstring = $token->[2];
1923: } elsif ($target eq 'tex') {
1924: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1925: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1926: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1927: $currentstring.=' '.$element.' ';
1928: }
1929: pop(@Apache::londefdef::description);
1930: $currentstring.='\end{description}';
1931: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1932: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1933: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1934: $Apache::londefdef::DL--;
1935: }
1936: return $currentstring;
1937: }
1938:
1939: #-- <dt> tag (end tag optional)
1940: sub start_dt {
1941: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1942: my $currentstring='';
1943: if ($target eq 'web' || $target eq 'webgrade') {
1944: $currentstring = $token->[4];
1945: } elsif ($target eq 'tex') {
1946: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1947: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1948: &Apache::lonxml::startredirection();
1949: $Apache::londefdef::DT[-1]++;
1950: $Apache::londefdef::seenDT[-1]=1;
1951: }
1952: return $currentstring;
1953: }
1954:
1955: sub end_dt {
1956: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1957: my $currentstring = '';
1958: if ($target eq 'web' || $target eq 'webgrade') {
1959: $currentstring = $token->[2];
1960: } elsif ($target eq 'tex') {
1961: if ($Apache::londefdef::DT[-1]) {
1962: my $data=&item_cleanup();
1963: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1964: $Apache::londefdef::DT[-1]--;
1965: }
1966: }
1967: return $currentstring;
1968: }
1969:
1970: sub item_cleanup {
1971: my $item=&Apache::lonxml::endredirection();
1972: $item=~s/\\begin{center}//g;
1973: $item=~s/\\end{center}//g;
1974: return $item;
1975: }
1976:
1977: #-- <dd> tag (end tag optional)
1978: sub start_dd {
1979: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1980: my $currentstring = '';
1981: if ($target eq 'web' || $target eq 'webgrade') {
1982: $currentstring = $token->[4];
1983: } elsif ($target eq 'tex') {
1984: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1985: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1986: if (!$Apache::londefdef::seenDT[-1]) {
1987: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1988: }
1989: push(@{$Apache::londefdef::description[-1]},'');
1990: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1991: $Apache::londefdef::DD[-1]++;
1992: &Apache::lonxml::startredirection();
1993: }
1994: return $currentstring;
1995: }
1996:
1997: sub end_dd {
1998: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1999: my $currentstring = '';
2000: if ($target eq 'web' || $target eq 'webgrade') {
2001: $currentstring = $token->[2];
2002: } elsif ($target eq 'tex') {
2003: $Apache::londefdef::description[-1]->[-1].=
2004: &Apache::lonxml::endredirection().' \vskip 0mm ';
2005: $Apache::londefdef::DD[-1]--;
2006: }
2007: return $currentstring;
2008: }
2009:
2010: #-- <table> tag (end tag required)
2011: # <table> also ends any prior <p> that is not closed.
2012: # but, unless I allow <p>'s to nest, that's the
2013: # only way I could think of to allow <p> in
2014: # <tr> <th> bodies
2015: #
2016: #list of supported attributes: border,width,TeXwidth,TeXtheme
2017: # align
2018: sub start_table {
2019: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2020: my $textwidth = '';
2021: my $currentstring = &end_p();
2022: if ($target eq 'web' || $target eq 'webgrade') {
2023: $currentstring .= $token->[4];
2024: } elsif ($target eq 'tex') {
2025: &disable_para(); # Can't have paras in a table.
2026:
2027:
2028: # New table code:
2029:
2030: # Get the parameters that we can do something about:
2031:
2032: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2033: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2034: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2035: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2036:
2037: # The only thing that needs any figuring out is the width.. and then only if it is
2038: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2039: #
2040:
2041: my $table = new Apache::lontable();
2042: if ($border ne '') {
2043: $table->table_border(1);
2044: $table->cell_border(1);
2045: }
2046: if ($theme ne '') {
2047: $table->theme($theme);
2048: }
2049: if ($align ne '') {
2050: $table->alignment($align);
2051: }
2052:
2053: # Missing width is most of page width
2054:
2055: if ($width eq "") {
2056: $width = '70%';
2057: }
2058:
2059: # If a percentage, need to calculate what this means in terms of
2060: # page width:
2061:
2062: if ($width =~ /%$/) {
2063: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2064: $width =~ s/%//;
2065: $width = $width * $textwidth / 100.0;
2066: $width .= " mm";
2067: $table->width($width);
2068: }
2069:
2070: push(@Apache::londefdef::table, $table);
2071: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2072:
2073: #--------------------------------------------------------
2074: # Old table code here.
2075: #--------------------------------------------------------
2076:
2077:
2078: if (0) {
2079: push(@Apache::londefdef::table, {});
2080: $Apache::londefdef::table[-1]{'row_number'} = -1;
2081: #maximum table's width (default coincides with text line length)
2082: if ($#Apache::londefdef::table==0) {
2083: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2084: $textwidth=~/(\d+\.?\d*)/;
2085: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2086: } else {
2087: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2088: #the maximum width of nested table is determined by LATeX width of parent cell
2089: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2090: } else {
2091: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2092: $textwidth=$Apache::londefdef::table[-2]{'width'};
2093: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2094: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2095: }
2096: }
2097: }
2098:
2099: # width either comes forced from the TeXwidth or the width parameters.
2100: # in either case it can be a percentage or absolute width.
2101: # in the width case we ignore absolute width
2102: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2103: if (!defined($TeXwidth)) {
2104: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2105: $safeeval,undef,1);
2106: if ($htmlwidth =~ /%/) {
2107: $TeXwidth = $htmlwidth;
2108: } else {
2109: $TeXwidth = $textwidth;
2110: }
2111: }
2112: # if the width is specified as a % it is converted to an absolute width.
2113: # otherwise.. just plugged right in the hash
2114:
2115: if ($TeXwidth=~/%/) {
2116: $TeXwidth=~/(\d+)/;
2117: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2118: } else {
2119: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2120: }
2121: # In the end, however the table width cannot be wider than $textwidth...
2122:
2123: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2124: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2125: }
2126: #table's border
2127: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2128: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2129: unless (defined $border) { $border = 0; }
2130: if ($border) {
2131: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2132: $Apache::londefdef::table[-1]{'vinc'} = '&';
2133: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2134: } else {
2135: $Apache::londefdef::table[-1]{'hinc'} = '';
2136: $Apache::londefdef::table[-1]{'vinc'} = '&';
2137: $Apache::londefdef::table[-1]{'vvinc'} = '';
2138: }
2139: if ($#Apache::londefdef::table==0) {
2140: # Note that \newline seems to destroy the alignment envs.
2141: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2142: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2143: }
2144: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2145: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2146: $Apache::londefdef::table[-1]{'objectlen'}=[];
2147: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2148: $Apache::londefdef::table[-1]{'maxlen'}=[];
2149: $Apache::londefdef::table[-1]{'minlen'}=[];
2150: $Apache::londefdef::table[-1]{'content'}=[];
2151: $Apache::londefdef::table[-1]{'align'}=[];
2152: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2153: }
2154:
2155: }
2156: return $currentstring;
2157: }
2158:
2159: sub end_table {
2160: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2161: my $currentstring = '';
2162: if ($target eq 'web' || $target eq 'webgrade') {
2163: $currentstring = $token->[2];
2164: } elsif ($target eq 'tex') {
2165:
2166:
2167: # New table code:
2168:
2169: my $table = pop(@Apache::londefdef::table);
2170: my $t = $table->generate();
2171: $currentstring = $t->generate_string();
2172: &enable_para();
2173: #--------------------------------------------------------------
2174: # Old table code:
2175: #--------------------------------------------------------------
2176:
2177: if (0) {
2178:
2179: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2180: my $inmemory = '';
2181: my $output = '';
2182: my $WARNING='';
2183: #width of columns from TeXwidth attributes
2184:
2185: # Protect against unbalanced </table> tag.
2186:
2187: if (scalar(@Apache::londefdef::table) > 0) {
2188:
2189: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2190: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2191: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2192: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2193: }
2194: }
2195: }
2196: #free space and number of empty columns
2197: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2198: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2199: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2200: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2201: $empty_columns++;
2202: } else {
2203: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2204: }
2205: }
2206:
2207: #boundaries for contents columns
2208: my @min_len=();#columns can not be narrower
2209: my @max_len=();#maximum length of column
2210: my $avg_max;
2211: my $avg_min;
2212: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2213: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2214: my ($localmin,$localmax)=(0,0);
2215: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2216: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2217: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2218: }
2219: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2220: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2221: }
2222: }
2223: push @min_len, $localmin;
2224: push @max_len, $localmax;
2225: $avg_max = $localmax + $avg_max;
2226: $avg_min = $localmin + $avg_min;
2227: }
2228: # Does not really matter what the average max/min are if there are no cols.
2229: # and this prevents div 0 in that case.
2230:
2231: if ($counter_cols != 0) {
2232: $avg_max = $avg_max/$counter_cols;
2233: $avg_min = $avg_min/$counter_cols;
2234: }
2235:
2236:
2237: # I don't think the below is needed.. but just in case:
2238:
2239: if ($avg_min > $avg_max) {
2240: my $temp = $avg_min;
2241: $avg_min = $avg_max;
2242: $avg_max = $temp;
2243: }
2244:
2245:
2246: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2247: my $localmin=0,;
2248: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2249: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2250: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2251: }
2252: }
2253: if ($max_len[$jn]<$localmin) {
2254: $max_len[$jn]=$localmin;
2255: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2256: }#object size is bigger
2257: if ($min_len[$jn]<$localmin) {
2258: $min_len[$jn]=$localmin;
2259: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2260: }#object size is bigger
2261: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2262: $min_len[$jn]=0;
2263: $max_len[$jn]=0;
2264: }
2265: # Spans seem to be really bothered by max/min = 0. So if we have one
2266: # make it an average joe max/min.
2267:
2268: if ($max_len[$jn] == 0) {
2269: $max_len[$jn] = $avg_max;
2270: }
2271: if ($min_len[$jn] == 0) {
2272: $min_len[$jn] = $avg_min;
2273: }
2274:
2275: }
2276: #final adjustment of column width
2277: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2278: my @adjust=();
2279: #step 1. adjustment by maximum value
2280: my $space_needed=0;
2281: for (my $jn=0;$jn<=$#max_len;$jn++) {
2282: $space_needed=$space_needed+$max_len[$jn];
2283: }
2284: if ($space_needed<=$available_space) {
2285:
2286: for (my $jn=0;$jn<=$#max_len;$jn++) {
2287: if ($fwidth[$jn]==0) {
2288: $fwidth[$jn]=$max_len[$jn];
2289: }
2290: }
2291: } else {
2292: #step 2. adjustment by minimum value (estimation)
2293: $space_needed=0;
2294: for (my $jn=0;$jn<=$#min_len;$jn++) {
2295: $space_needed+=$min_len[$jn];
2296: }
2297: if ($space_needed>$available_space) {
2298: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2299: for (my $jn=0;$jn<=$#max_len;$jn++) {
2300: if ($fwidth[$jn]==0) {
2301: $fwidth[$jn]=$min_len[$jn];
2302: }
2303: }
2304: #check if we have objects which can be scaled
2305: my $how_many_to_scale=0;
2306: my @to_scale=();
2307: for (my $jn=0;$jn<=$#max_len;$jn++) {
2308: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2309: $how_many_to_scale++;
2310: push @to_scale, $jn;
2311: }
2312: }
2313: if ($how_many_to_scale>0) {
2314: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2315: foreach my $jn (@to_scale) {
2316: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2317: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2318: if ($1 ne '') {
2319: my $current_length=&recalc($1);
2320: $current_length=~/(\d+\.?\d*)/;
2321: $current_length=$current_length-$space_to_adjust;
2322: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2323: }
2324: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2325: if ($1 ne '') {
2326: my $current_length=$1;
2327: $current_length=$current_length-$space_to_adjust;
2328: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2329: }
2330: }
2331: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2332: }
2333: }
2334: } else {
2335: #step 3. adjustment over minimal + corrections
2336: my $enlarge_coef=$available_space/$space_needed;
2337: my $acsessive=0;
2338: for (my $jn=0;$jn<=$#min_len;$jn++) {
2339: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2340: if ($adjust[$jn]>$max_len[$jn]) {
2341: $fwidth[$jn]=$max_len[$jn];
2342: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2343: $adjust[$jn]=0;
2344:
2345: }
2346: }
2347: if ($acsessive>0) {
2348: #we have an excess of space and can redistribute it
2349: my $notempty_columns=0;
2350: for (my $jn=0;$jn<=$#min_len;$jn++) {
2351: if ($adjust[$jn]!=0) {
2352: $notempty_columns++;
2353: }
2354: }
2355: my $per_column=$acsessive/$notempty_columns;
2356: for (my $jn=0;$jn<=$#min_len;$jn++) {
2357: if ($adjust[$jn]!=0) {
2358: $adjust[$jn]+=$per_column;
2359: $fwidth[$jn]=$adjust[$jn];
2360: }
2361: }
2362: } else {
2363: for (my $jn=0;$jn<=$#min_len;$jn++) {
2364: $fwidth[$jn]=$adjust[$jn];
2365: }
2366: }
2367: }
2368: }
2369: # use all available width or specified width as if not specified,
2370: # the specified width gets defaulted to the available width.
2371:
2372: my $current=0;
2373: for (my $i=0;$i<=$#fwidth;$i++) {
2374: $current+=$fwidth[$i];
2375: }
2376: if ($current == 0) {
2377: $current = $Apache::londefdef::table[-1]{'width'};
2378: }
2379: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2380: for (my $i=0;$i<=$#fwidth;$i++) {
2381: $fwidth[$i]*=$coef;
2382: }
2383: #removing of empty columns if allowed
2384: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2385: if ($permission eq 'yes') {
2386: my @cleaned_table=();
2387: my @cleaned_header=();
2388: my $colind=0;
2389: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2390: if ($fwidth[$jn]!=0) {
2391: #we need to copy column
2392: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2393: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2394: $cleaned_header[$colind]=$fwidth[$jn];
2395: }
2396: $colind++;
2397: }
2398: }
2399: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2400: @fwidth=@cleaned_header;
2401: }
2402:
2403:
2404: #construct header of the table
2405: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2406: for (my $in=0;$in<=$#fwidth;$in++) {
2407: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2408: }
2409: $header_of_table .= '}';
2410:
2411: #fill the table
2412: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2413: my $have_rowspan = 0;
2414: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2415:
2416: #-----------------------------------------------------------
2417: # I think this order of doing things will ensure that
2418: # single rowspan, columspan and combined row/colspans will
2419: # work correctly. LaTeX is delicate here.
2420: # RF.
2421:
2422: # Start a rowspan if necessary:
2423:
2424: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2425: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2426: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2427: #
2428: # Do the appropriate magic if this has a colspan
2429: #
2430:
2431: my $border_char = "";
2432: if ($border) {
2433: $border_char = "|";
2434: }
2435: my $spanwidth = 0;
2436: if ($colspan > 1) {
2437: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2438: $spanwidth += $fwidth[$spancol];
2439: }
2440: $output .= '\multicolumn{'.
2441: $colspan
2442: ."}";
2443: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2444: $output .= '{'.$border_char.'c'.$border_char.'}{';
2445: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2446: $output .= '{'.$border_char.'r'.$border_char.'}{';
2447: }
2448: else {
2449: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2450: }
2451:
2452: } else {
2453: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2454: }
2455:
2456: # Rowspan... if colspan is 1, and there's an alignment we'll need
2457: # to kick in a multicolumn in order to get the alignment spec.
2458: # this must precede the multirow or LaTex gets quite upset.
2459: # Naturally if colspan > 1 we've already done that above ^
2460: #
2461: my $multirow_aligned = 0;
2462: if ($rowspan > 1) {
2463: if ($colspan == 1) {
2464: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2465: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2466: $multirow_aligned = 1;
2467: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2468: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2469: $multirow_aligned = 1;
2470: }
2471: }
2472: $have_rowspan++;
2473: if ($multirow_aligned) {
2474: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2475: } else {
2476: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2477: }
2478:
2479: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2480: s{^\s*\\par\s*}{};
2481: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2482: s{\s*\\vskip\s*0pt\s*$}{};
2483:
2484: #
2485: # If we did not throw in a multicolumn to align, then add
2486: # an extra {
2487: # so we close correctly without having to keep additional state
2488: # around
2489: #
2490: if (!$multirow_aligned) {
2491: $output .= '{';
2492: }
2493: }
2494: if (($rowspan eq '^') || ($rowspan eq '_')) {
2495: $have_rowspan++;
2496: }
2497: #--------------------------------------------------------------
2498:
2499:
2500: # For right and center alignment of single cells.
2501: # we are going to use a multicolumn with a span of 1 to specify alignment.
2502: #
2503: if ($colspan == 1 && $rowspan == 1) {
2504: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2505: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2506: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2507: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2508: }
2509: }
2510:
2511: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2512:
2513: if (($colspan == 1 && $rowspan == 1) &&
2514: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2515: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2516: $output .= '}';
2517: }
2518:
2519: # Close off any open multirow:
2520:
2521: if ($rowspan > 1) {
2522: $output .= '}}';
2523: }
2524: # Close off the colspan...
2525: #
2526: if ($colspan > 1) {
2527: $output .= '}';
2528: $jn += $colspan-1; # Adjust for number of rows really left.
2529: }
2530: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2531: }
2532: # If have_rowspan > 0, and borders are on, then
2533: # we need to do more than put an \hline at the bottom of row.
2534: # we need to do the appropriate \cline to ensure that
2535: # the spanned rows don't have \hlines through them.
2536:
2537: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2538: $output .= ' \\\\ ';
2539: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2540: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2541: if ($rowspan ne "^") {
2542: if (($rowspan <= 1) || ($rowspan eq '_')) {
2543: my $column = $jn+1;
2544: $output .= '\cline{'.$column.'-'.$column.'} ';
2545: }
2546: }
2547: }
2548:
2549: } else {
2550: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2551: }
2552: }
2553: # Note that \newline destroys alignment env's produced by e.g. <div>
2554: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2555: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2556: if ($#Apache::londefdef::table > 0) {
2557: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2558: # Figure out max/and min width by summing us and then
2559: # apply that to the current column of the table we nest in
2560: # if it's larger than the current width or the current width
2561: # is undefined.
2562: #
2563: my $min_nested_width = 0;
2564: my $max_nested_width = 0;
2565: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2566: $min_nested_width += $min_len[$col];
2567: $max_nested_width += $max_len[$col];
2568:
2569: }
2570: # Fudge in an extra 5 mm for borders etc:
2571:
2572: $min_nested_width += 5;
2573: $max_nested_width += 5;
2574:
2575: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2576: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2577: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2578: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2579: }
2580: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2581: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2582: }
2583:
2584: pop @Apache::londefdef::table;
2585: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2586: } else {
2587: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2588: pop @Apache::londefdef::table;
2589: undef @Apache::londefdef::table;
2590: }
2591: }
2592: &enable_para();
2593: }
2594: }
2595: return $currentstring;
2596: }
2597:
2598: #-- <tr> tag (end tag optional)
2599: sub start_tr {
2600: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2601: my $currentstring = '';
2602: if ($target eq 'web' || $target eq 'webgrade') {
2603: $currentstring = $token->[4];
2604: } elsif ($target eq 'tex') {
2605:
2606: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2607: $Apache::londefdef::table[-1]->start_row();
2608:
2609: if ($align ne '') {
2610: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2611: }
2612:
2613: #---------------------------------------------------------------
2614: # Old table code.
2615: #---------------------------------------------------------------
2616:
2617: if (0) {
2618: $Apache::londefdef::table[-1]{'row_number'}++;
2619: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2620: if ($alignchar ne '') {
2621: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2622: } else {
2623: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2624: }
2625: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2626: #
2627: # Need to save the number of table columns to preserve the max # columns.
2628: #
2629: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2630: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2631: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2632: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2633: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2634: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2635: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2636: }
2637: }
2638: return $currentstring;
2639: }
2640:
2641: sub end_tr {
2642: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2643: my $currentstring = &end_p(); # Close any pending <p> in the row.
2644: if ($target eq 'web' || $target eq 'webgrade') {
2645: $currentstring .= $token->[2];
2646: } elsif ($target eq 'tex') {
2647:
2648: # In case the user is missing a </td> or </th> tag:
2649:
2650: if ($Apache::londefdef::TD_redirection) {
2651: &end_td_tex($parstack,$parser,$safeeval);
2652: }
2653: $Apache::londefdef::table[-1]->end_row();
2654:
2655: #-----------------------------------------------
2656: # Old table code
2657: #-----------------------------------------------
2658:
2659: if (0) {
2660: if ($Apache::londefdef::TD_redirection) {
2661: &end_td_tex($parstack,$parser,$safeeval);
2662: }
2663: # Counter columns must be the maximum number of columns seen
2664: # in the table so far so:
2665: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2666: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2667: }
2668: }
2669:
2670:
2671: }
2672: return $currentstring;
2673: }
2674:
2675: #-- <td> tag (end tag optional)
2676: sub start_td {
2677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2678: my $currentstring = '';
2679: if ($target eq 'web' || $target eq 'webgrade') {
2680: $currentstring = $token->[4];
2681: } elsif ($target eq 'tex') {
2682: $Apache::londefdef::TD_redirection = 1;
2683: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2684: }
2685: return $currentstring;
2686: }
2687:
2688: sub tag_check {
2689: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2690: my @ar=@$parstack;
2691: for (my $i=$#ar-1;$i>=0;$i--) {
2692: if (lc($$tagstack[$i]) eq $good_tag) {
2693: &start_td_tex($parstack,$parser,$safeeval);
2694: last;
2695: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2696: splice @ar, $i+1;
2697: &end_td_tex(\@ar,$parser,$safeeval);
2698: &start_td_tex($parstack,$parser,$safeeval);
2699: last;
2700: }
2701: }
2702: return '';
2703: }
2704:
2705: #
2706: # Factor out cell configuration hash generation:
2707: #
2708:
2709: sub cell_config_hash {
2710: my ($align, $rowspan, $colspan) = @_;
2711: my %config;
2712: if ($align ne '') {
2713: $config{'halign'} = $align;
2714: }
2715: if ($colspan ne "") {
2716: $config{'colspan'} = $colspan;
2717: }
2718: if ($rowspan ne '') {
2719: $config{'rowspan'} = $rowspan;
2720: }
2721: return \%config;
2722: }
2723:
2724: sub start_td_tex {
2725: my ($parstack,$parser,$safeeval) = @_;
2726:
2727: # At this stage, an empty cell is created with the
2728: # appropriate rowspan/colspan and alignment
2729: # attributes, but empty of text. end_td_tex will
2730: # fetch the contents from the recursive parse and
2731: # fill the cell with them:
2732: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2733: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2734: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2735:
2736: my $config = &cell_config_hash($align, $rowspan, $colspan);
2737:
2738: my $table = $Apache::londefdef::table[-1];
2739: $table->add_cell('', $config);
2740:
2741:
2742: #------------------------------------------------
2743: # Old table code.
2744: #------------------------------------------------
2745:
2746: if (0) {
2747:
2748: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2749: if ($alignchar eq '') {
2750: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2751: }
2752: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2753: $Apache::londefdef::table[-1]{'counter_columns'}++;
2754: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2755: if (defined $TeXwidth) {
2756: my $current_length=&recalc($TeXwidth);
2757: $current_length=~/(\d+\.?\d*)/;
2758: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2759: }
2760: }
2761: &Apache::lonxml::startredirection();
2762: return '';
2763: }
2764:
2765: sub end_td_tex {
2766:
2767: my $text = &Apache::lonxml::endredirection();
2768: my $table = $Apache::londefdef::table[-1];
2769: $table->append_cell_text($text);
2770:
2771: #-------------------------------------------------
2772: # Old table code
2773: #-------------------------------------------------
2774:
2775: if (0) {
2776: my ($parstack,$parser,$safeeval) = @_;
2777: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2778: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2779: my $data = &Apache::lonxml::endredirection();
2780:
2781: # The rowspan array of the table indicates which cells are part of a span.
2782: # n indicates the start of a span set of n rows.
2783: # ^ indicates a cell that continues a span set.
2784: # _ indicates the cell is at the bottom of a span set.
2785: # If this and subsequent cells are part of a rowspan, we must
2786: # push along the row until we find one that is not.
2787:
2788: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2789: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2790: # Part of a span.
2791: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2792: $current_column++;
2793: }
2794: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2795:
2796:
2797: # Get the column and row spans.
2798: # Colspan can be done via \multicolumn if I can figure out the data structs.
2799:
2800: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2801: if (!$colspan) {
2802: $colspan = 1;
2803: }
2804:
2805: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2806: if (!$rowspan) {
2807: $rowspan = 1;
2808: }
2809:
2810:
2811:
2812: for (my $c = 0; $c < $colspan; $c++) {
2813: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2814: for (my $i = 1; $i < $rowspan; $i++) {
2815: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2816: if ($i == ($rowspan-1)) {
2817: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2818: }
2819: }
2820: }
2821:
2822: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2823: if (defined $TeXwidth) {
2824: for (my $c = 0; $c < $colspan; $c++) {
2825: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2826: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2827: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2828: }
2829: } else {
2830: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2831: my $garbage_data=$data;
2832: my $fwidth=0;
2833: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2834: my $current_length=&recalc($1);
2835: $current_length=~/(\d+\.?\d*)/;
2836: if ($fwidth<$1) {$fwidth=$1;}
2837: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2838: }
2839: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2840: my $current_length=$1;
2841: if ($fwidth<$current_length) {$fwidth=$current_length;}
2842: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2843: }
2844: for (my $c = 0; $c < $colspan; $c++) {
2845: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2846: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2847: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2848: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2849: }
2850: } 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)*/) {
2851: my $garbage_data=$data;
2852: my $fwidth=0;
2853: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2854: my $current_length=&recalc($1);
2855: $current_length=~/(\d+\.?\d*)/;
2856: if ($fwidth<$1) {$fwidth=$1;}
2857: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2858: }
2859: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2860: my $current_length=&recalc($1);
2861: $current_length=~/(\d+\.?\d*)/;
2862: if ($fwidth<$1) {$fwidth=$1;}
2863: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2864: }
2865: for (my $c = 0; $c < $colspan; $c++) {
2866: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2867: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2868: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2869: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2870: }
2871: $data=~s/\\\\\s*$//;
2872: } else {
2873: $data=~s/^\s+(\S.*)/$1/;
2874: $data=~s/(.*\S)\s+$/$1/;
2875: $data=~s/(\s)+/$1/;
2876: my ($current_length,$min_length)=(0,0);
2877: if ($data=~/\\vskip/) {
2878: my $newdata=$data;
2879: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2880: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2881: foreach my $elementdata (@newdata) {
2882: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2883: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2884: my @words=split(/ /,$elementdata);
2885: foreach my $word (@words) {
2886: my $lengthword=2.5*&LATEX_length($word);
2887: if ($min_length<$lengthword) {$min_length=$lengthword;}
2888: }
2889: }
2890: } else {
2891: $current_length=2.5*&LATEX_length($data);
2892: my @words=split(/ /,$data);
2893: foreach my $word (@words) {
2894: my $lengthword=2*&LATEX_length($word);
2895: if ($min_length<$lengthword) {$min_length=$lengthword;}
2896: }
2897: }
2898: for (my $c = 0; $c < $colspan; $c++) {
2899: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2900: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2901: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2902: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2903: }
2904: }
2905: }
2906: # Substitute all of the tables nested in this cell in their appropriate places.
2907:
2908:
2909: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2910: for (my $in=0; $in<=$nested_count; $in++) {
2911: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2912: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2913: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2914: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2915:
2916: }
2917: # Should be be killing off the 'include' elements as they're used up?
2918:
2919: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2920:
2921:
2922:
2923:
2924: # the colspan array will indicate how many columns will be spanned by this
2925: # cell..this requires that counter_columns also be adjusted accordingly
2926: # so that the next bunch of text goes in the right cell. Note that since
2927: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2928: #
2929:
2930: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2931: for (my $i = 0; $i < ($colspan -1); $i++) {
2932: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2933: }
2934: for (my $r = 0; $r < $rowspan; $r++) {
2935: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2936: # Put empty text in spanned cols.
2937:
2938: }
2939:
2940: }
2941:
2942: return '';
2943: }
2944:
2945: sub end_td {
2946: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2947: my $currentstring = '';
2948: if ($target eq 'web' || $target eq 'webgrade') {
2949: $currentstring = $token->[2];
2950: } elsif ($target eq 'tex') {
2951: $Apache::londefdef::TD_redirection =0;
2952: &end_td_tex($parstack,$parser,$safeeval);
2953: }
2954: return $currentstring;
2955: }
2956:
2957: #-- <th> tag (end tag optional)
2958: sub start_th {
2959: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2960: my $currentstring = '';
2961: if ($target eq 'web' || $target eq 'webgrade') {
2962: $currentstring = $token->[4];
2963: } elsif ($target eq 'tex') {
2964: $Apache::londefdef::TD_redirection = 1;
2965: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2966: }
2967: return $currentstring;
2968: }
2969:
2970: sub tagg_check {
2971: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2972: my @ar=@$parstack;
2973: for (my $i=$#ar-1;$i>=0;$i--) {
2974: if (lc($$tagstack[$i]) eq $good_tag) {
2975: &start_th_tex($parstack,$parser,$safeeval);
2976: last;
2977: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2978: splice @ar, $i+1;
2979: &end_th_tex(\@ar,$parser,$safeeval);
2980: &start_th_tex($parstack,$parser,$safeeval);
2981: last;
2982: }
2983: }
2984: return '';
2985: }
2986:
2987: sub start_th_tex {
2988: my ($parstack,$parser,$safeeval) = @_;
2989:
2990: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2991: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2992: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2993:
2994: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2995: my $table = $Apache::londefdef::table[-1];
2996: $table->add_cell('\textbf{', $config);
2997:
2998: #-------------------------------------------------------------------------------------
2999: #
3000: # Old table code.
3001: #
3002: #--------------------------------------------------------------------------------------
3003:
3004: if (0) {
3005:
3006:
3007: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
3008: if ($alignchar eq '') {
3009: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
3010: }
3011: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
3012: $Apache::londefdef::table[-1]{'counter_columns'}++;
3013: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3014: if (defined $TeXwidth) {
3015: my $current_length=&recalc($TeXwidth);
3016: $current_length=~/(\d+\.?\d*)/;
3017: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
3018: }
3019: }
3020:
3021: # Accept xml until the </th> tag.
3022:
3023: &Apache::lonxml::startredirection();
3024: return '';
3025: }
3026:
3027: sub end_th_tex {
3028: my ($parstack,$parser,$safeeval) = @_;
3029:
3030: my $table = $Apache::londefdef::table[-1];
3031: my $text = &Apache::lonxml::endredirection();
3032: $table->append_cell_text($text.'}');
3033:
3034: #-----------------------------------------------------------------------------
3035: # Old table code:
3036: #-----------------------------------------------------------------------------
3037:
3038: if (0) {
3039: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3040: my $data=&Apache::lonxml::endredirection();
3041: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3042: if (defined $TeXwidth) {
3043: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3044: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3045: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3046: } else {
3047: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3048: my $garbage_data=$data;
3049: my $fwidth=0;
3050: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3051: my $current_length=&recalc($1);
3052: $current_length=~/(\d+\.?\d*)/;
3053: if ($fwidth<$1) {$fwidth=$1;}
3054: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3055: }
3056: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3057: my $current_length=$1;
3058: if ($fwidth<$current_length) {$fwidth=$current_length;}
3059: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3060: }
3061: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3062: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3063: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3064: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3065: } else {
3066: $data=~s/^\s+(\S.*)/$1/;
3067: $data=~s/(.*\S)\s+$/$1/;
3068: $data=~s/(\s)+/$1/;
3069: my ($current_length,$min_length)=(0,0);
3070: if ($data=~/\\vskip/) {
3071: my $newdata=$data;
3072: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3073: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3074: foreach my $elementdata (@newdata) {
3075: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3076: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3077: my @words=split(/ /,$elementdata);
3078: foreach my $word (@words) {
3079: my $lengthword=2.5*&LATEX_length($word);
3080: if ($min_length<$lengthword) {$min_length=$lengthword;}
3081: }
3082: }
3083: } else {
3084: $current_length=2.5*&LATEX_length($data);
3085: my @words=split(/ /,$data);
3086: foreach my $word (@words) {
3087: my $lengthword=2*&LATEX_length($word);
3088: if ($min_length<$lengthword) {$min_length=$lengthword;}
3089: }
3090: }
3091: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3092: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3093: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3094: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3095: }
3096: }
3097: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3098: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3099: }
3100: #make data bold
3101: $data='\textbf{'.$data.'}';
3102: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3103: }
3104: return'';
3105: }
3106:
3107: sub end_th {
3108: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3109: my $currentstring = &end_p(); # Close any open <p> in the row.
3110: if ($target eq 'web' || $target eq 'webgrade') {
3111: $currentstring .= $token->[2];
3112: } elsif ($target eq 'tex') {
3113: $Apache::londefdef::TD_redirection =0;
3114: &end_th_tex($parstack,$parser,$safeeval);
3115: }
3116: return $currentstring;
3117: }
3118:
3119: #-- <img> tag (end tag forbidden)
3120: #
3121: # Render the <IMG> tag.
3122: # <IMG> has the following attributes (in addition to the
3123: # standard HTML ones:
3124: # TeXwrap - Governs how the tex target will try to wrap text around
3125: # horizontally aligned images.
3126: # TeXwidth - The width of the image when rendered for print (mm).
3127: # TeXheight - The height of the image when rendered for print (mm)
3128: # (Note there seems to also be support for this as a % of page size)
3129: #
3130: sub start_img {
3131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3132: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3133: undef,1);
3134: if (! $src &&
3135: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3136: ) {
3137: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3138: return '';
3139: }
3140: &Apache::lonxml::extlink($src);
3141: my $currentstring = '';
3142: my $scaling = .3;
3143:
3144: # Render unto browsers that which are the browser's...
3145:
3146: if ($target eq 'web' || $target eq 'webgrade') {
3147: if ($env{'browser.imagesuppress'} ne 'on') {
3148: my $enc = ('yes' eq
3149: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3150: $safeeval)));
3151: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3152: $enc);
3153: } else {
3154: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3155: undef,1);
3156: if (!$alttag) {
3157: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3158: $src);
3159: }
3160: $currentstring.='[IMAGE: '.$alttag.']';
3161: }
3162:
3163: # and render unto TeX that which is LaTeX
3164:
3165: } elsif ($target eq 'tex') {
3166: #
3167: # The alignment will require some superstructure to be put around
3168: # the \includegraphics stuff. At present we can only partially
3169: # simulate the alignments offered by html.
3170: #
3171: #
3172: my $align = lc(&Apache::lonxml::get_param('align',
3173: $parstack,
3174: $safeeval,
3175: undef,1));
3176: if(!$align) {
3177: $align = "bottom"; # This is html's default so it's ours too.
3178: }
3179: #
3180: &Apache::lonxml::debug("Alignemnt = $align");
3181: # LaTeX's image/text wrapping is really bad since it wants to
3182: # make figures float.
3183: # The user has the optional parameter (applicable only to l/r
3184: # alignment to use the picins/parpic directive to get wrapped text
3185: # this is also imperfect.. that's why we give them a choice...
3186: # so they can't yell at us for our choice.
3187: #
3188: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3189: $parstack,
3190: $safeeval,
3191: undef,0);
3192: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3193: if(!$latex_rendering) {
3194: $latex_rendering = "texwrap";
3195: }
3196: # using texwrap inside a table does not work. So, if after all of this,
3197: # texwrap is on, we turn it off if we detect we're in a table:
3198: #
3199: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3200: $latex_rendering = 'parpic';
3201: }
3202:
3203: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3204:
3205: #if original bmp/gif/jpg/png file exist do following:
3206: my $origsrc=$src;
3207: my ($path,$file) = &get_eps_image($src);
3208: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3209: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3210: &Apache::lonxml::debug("path = $path file = $file src = $src");
3211: if (-e $src) {
3212: &Apache::lonxml::debug("$src exists");
3213: my ($height_param,$width_param)=
3214: &image_size($origsrc,0.3,$parstack,$safeeval);
3215: my $size;
3216: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3217: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3218: # Default size if not able to extract that (e.g. eps image).
3219:
3220: # &Apache::lonnet::logthis("Size = $size");
3221:
3222: $size='['.$size;
3223: $size=~s/,$/]/;
3224: $currentstring .= '\graphicspath{{'.$path.'}}'
3225: .'\includegraphics'.$size.'{'.$file.'} ';
3226: my $closure;
3227: ($currentstring, $closure) = &align_latex_image($align,
3228: $latex_rendering,
3229: $currentstring,
3230: $width_param,
3231: $height_param);
3232: $currentstring .= $closure;
3233:
3234: } else {
3235: &Apache::lonxml::debug("$src does not exist");
3236: #original image file doesn't exist so check the alt attribute
3237: my $alt =
3238: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3239: unless ($alt) {
3240: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3241: }
3242:
3243: if ($alt) { $currentstring .= ' '.$alt.' '; }
3244: }
3245:
3246: # And here's where the semi-quote breaks down: allow the user
3247: # to edit the beast as well by rendering the problem for edit:
3248: } elsif ($target eq 'edit') {
3249: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3250: $currentstring .=&Apache::edit::tag_start($target,$token);
3251: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3252: &Apache::edit::browse('src',undef,'alt',$only).' '.
3253: &Apache::edit::search('src',undef,'alt').'<br />';
3254: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3255: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3256: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3257: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3258: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3259: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3260: ['','bottom','middle','top','left','right'],$token,5);
3261: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3262: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3263: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3264: ['no','yes'], $token, 2);
3265: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3266: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3267: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3268: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3269: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3270:
3271: if ($token->[2]{'src'}=~/\$/) {
3272: $currentstring.='Variable image source';
3273: } else {
3274: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3275: if ($width) { $currentstring.=' width="'.$width.'" '; }
3276: if ($height) { $currentstring.=' height="'.$height.'" '; }
3277: $currentstring .= ' />';
3278: }
3279: } elsif ($target eq 'modified') {
3280: my ($osrc,$owidth,$oheight)=
3281: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3282: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3283: $safeeval,'src','alt','align',
3284: 'TeXwidth','TeXheight', 'TeXwrap',
3285: 'width','height','encrypturl');
3286: my ($nsrc,$nwidth,$nheight)=
3287: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3288: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3289: &image_replication($loc);
3290: my ($iwidth,$iheight);
3291: if (-e $loc) {
3292: my $image = Image::Magick->new;
3293: $image->Read($loc);
3294: ($iwidth, $iheight) = ($image->Get('width'),
3295: $image->Get('height'));
3296: }
3297: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3298: # changed image or no size specified,
3299: # if they didn't explicitly change the
3300: # width or height use the ones from the image
3301: if ($iwidth && $iheight) {
3302: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3303: $token->[2]{'width'} = $iwidth;$ctag=1;
3304: }
3305: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3306: $token->[2]{'height'}=$iheight;$ctag=1;
3307: }
3308: }
3309: }
3310: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3311: # if we don't have a width or height
3312: if ($iwidth && $cwidth && !$cheight) {
3313: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3314: }
3315: if ($iheight && $cheight && !$cwidth) {
3316: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3317: }
3318: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3319: }
3320:
3321: return $currentstring;
3322: }
3323:
3324: sub end_img {
3325: my ($target,$token) = @_;
3326: my $currentstring = '';
3327: if ($target eq 'web' || $target eq 'webgrade') {
3328: $currentstring = $token->[2];
3329: } elsif ($target eq 'tex') {
3330: $currentstring = '';
3331: }
3332: return $currentstring;
3333: }
3334:
3335: #-- <applet> tag (end tag required)
3336: sub start_applet {
3337: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3338:
3339: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3340: &Apache::lonxml::extlink($code);
3341: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3342: undef,1);
3343: &Apache::lonxml::extlink($archive);
3344: my $currentstring = '';
3345: if ($target eq 'web' || $target eq 'webgrade') {
3346: if ($env{'browser.appletsuppress'} ne 'on') {
3347: $currentstring = &Apache::lonenc::encrypt_ref($token,
3348: {'code'=>$code,
3349: 'archive'=>$archive}
3350: );
3351: } else {
3352: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3353: $safeeval,undef,1);
3354: unless ($alttag) {
3355: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3356: $code);
3357: }
3358: $currentstring='[APPLET: '.$alttag.']';
3359: }
3360: } elsif ($target eq 'tex') {
3361: # Turn off some stuff we can't be inside thank you LaTeX
3362:
3363:
3364: my $restart_sub = 0;
3365: my $restart_sup = 0;
3366:
3367: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3368: # using the start_ stop_ functions.. those tags only care about
3369: # $target.
3370:
3371: if (&is_inside_of($tagstack, "sub")) {
3372: $restart_sub = 1;
3373: $currentstring .= &end_sub($target, $token, $tagstack,
3374: $parstack, $parser, $safeeval);
3375: }
3376: if (&is_inside_of($tagstack, "sup")) {
3377: $restart_sup = 1;
3378: $currentstring .= &end_sup($target, $token, $tagstack,
3379: $parstack, $parser, $safeeval);
3380: }
3381:
3382: # Now process the applet; just replace it with its alt attribute.
3383:
3384: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3385: $safeeval,undef,1);
3386: unless ($alttag) {
3387: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3388: undef,1);
3389: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3390: $code);
3391: }
3392: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3393: '.}\end{center}';
3394:
3395: # Turn stuff back on that we can't be inside of.
3396:
3397: if ($restart_sub) {
3398: $currentstring .= &start_sub($target, $token, $tagstack,
3399: $parstack, $parser, $safeeval);
3400: }
3401: if ($restart_sup) {
3402: $currentstring .= &start_sup($target, $token, $tagstack,
3403: $parstack, $parser, $safeeval);
3404: }
3405: }
3406: return $currentstring;
3407: }
3408:
3409: sub end_applet {
3410: my ($target,$token) = @_;
3411: my $currentstring = '';
3412: if ($target eq 'web' || $target eq 'webgrade') {
3413: $currentstring = $token->[2];
3414: } elsif ($target eq 'tex') {
3415: }
3416: return $currentstring;
3417: }
3418:
3419: #-- <embed> tag (end tag optional/required)
3420: sub start_embed {
3421: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3422: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3423: &Apache::lonxml::extlink($src);
3424: my $currentstring = '';
3425: if ($target eq 'web' || $target eq 'webgrade') {
3426: if ($env{'browser.embedsuppress'} ne 'on') {
3427: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3428: } else {
3429: my $alttag=&Apache::lonxml::get_param
3430: ('alt',$parstack,$safeeval,undef,1);
3431: unless ($alttag) {
3432: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3433: }
3434: $currentstring='[EMBED: '.$alttag.']';
3435: }
3436: } elsif ($target eq 'tex') {
3437: }
3438: return $currentstring;
3439: }
3440:
3441: sub end_embed {
3442: my ($target,$token) = @_;
3443: my $currentstring = '';
3444: if ($target eq 'web' || $target eq 'webgrade') {
3445: $currentstring = $token->[2];
3446: } elsif ($target eq 'tex') {
3447: }
3448: return $currentstring;
3449: }
3450:
3451: #-- <param> tag (end tag forbidden)
3452: sub start_param {
3453: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3454: if (&Apache::lonxml::get_param('name',$parstack,
3455: $safeeval,undef,1)=~/^cabbase$/i) {
3456: my $value=&Apache::lonxml::get_param('value',$parstack,
3457: $safeeval,undef,1);
3458: &Apache::lonxml::extlink($value);
3459: }
3460:
3461: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3462: &Apache::lonxml::extlink($src);
3463: my $currentstring = '';
3464: if ($target eq 'web' || $target eq 'webgrade') {
3465: my %toconvert;
3466: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3467: if ($src) { $toconvert{'src'}= $src; }
3468: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3469: undef,1);
3470: if ($name=~/^cabbase$/i) {
3471: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3472: $safeeval,undef,1);
3473: }
3474: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3475: } elsif ($target eq 'tex') {
3476: }
3477: return $currentstring;
3478: }
3479:
3480: sub end_param {
3481: my ($target,$token) = @_;
3482: my $currentstring = '';
3483: if ($target eq 'web' || $target eq 'webgrade') {
3484: $currentstring = $token->[2];
3485: } elsif ($target eq 'tex') {
3486: }
3487: return $currentstring;
3488: }
3489:
3490: #-- <allow> tag
3491: sub start_allow {
3492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3493: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3494: &Apache::lonxml::extlink($src);
3495:
3496: if ($target eq 'tex') { &image_replication($src); }
3497: my $result;
3498: if ($target eq 'edit') {
3499: $result .=&Apache::edit::tag_start($target,$token);
3500: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3501: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3502: } elsif ($target eq 'modified') {
3503: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3504: $safeeval,'src');
3505: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3506: }
3507: return $result;
3508: }
3509:
3510: sub end_allow {
3511: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3512: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3513: return '';
3514: }
3515:
3516: #-- Frames (end tag required)
3517: #-- <frameset>
3518: sub start_frameset {
3519: my ($target,$token) = @_;
3520: my $currentstring = ''; # Close any pending para.
3521: if ($target eq 'web' || $target eq 'webgrade') {
3522: $currentstring =
3523: &Apache::loncommon::start_page($Apache::londefdef::title,
3524: $Apache::londefdef::head,
3525: {'add_entries' => $token->[2],
3526: # 'no_title' => 1,
3527: 'force_register' => 1,
3528: 'frameset' => 1,});
3529:
3530: }
3531: return $currentstring;
3532: }
3533:
3534: sub end_frameset {
3535: my ($target,$token) = @_;
3536: my $currentstring = '';
3537: if ($target eq 'web' || $target eq 'webgrade') {
3538: $currentstring = $token->[2];
3539: }
3540: return $currentstring;
3541: }
3542:
3543: #-- <xmp> (end tag required)
3544: sub start_xmp {
3545: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web' || $target eq 'webgrade') {
3548: $currentstring .= $token->[4];
3549: } elsif ($target eq 'tex') {
3550: $currentstring .= '\begin{verbatim}';
3551: }
3552: return $currentstring;
3553: }
3554:
3555: sub end_xmp {
3556: my ($target,$token) = @_;
3557: my $currentstring = '';
3558: if ($target eq 'web' || $target eq 'webgrade') {
3559: $currentstring .= $token->[2];
3560: } elsif ($target eq 'tex') {
3561: $currentstring .= '\end{verbatim}';
3562: }
3563: return $currentstring;
3564: }
3565:
3566: #-- <pre> (end tag required)
3567: sub start_pre {
3568: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3569: my $currentstring = &end_p(); # close off pending <p>
3570: if ($target eq 'web' || $target eq 'webgrade') {
3571: $currentstring .= $token->[4];
3572: } elsif ($target eq 'tex') {
3573: $currentstring .= '\begin{verbatim}';
3574: &Apache::lonxml::disable_LaTeX_substitutions();
3575: }
3576: return $currentstring;
3577: }
3578:
3579: sub end_pre {
3580: my ($target,$token) = @_;
3581: my $currentstring = '';
3582: if ($target eq 'web' || $target eq 'webgrade') {
3583: $currentstring .= $token->[2];
3584: } elsif ($target eq 'tex') {
3585: $currentstring .= '\end{verbatim}';
3586: &Apache::lonxml::enable_LaTeX_substitutions();
3587: }
3588: return $currentstring;
3589: }
3590:
3591: #-- <insert>
3592: sub start_insert {
3593: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3594: my $currentstring = '';
3595: if ($target eq 'web' || $target eq 'webgrade') {
3596: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3597: $currentstring .= '<b>'.$display.'</b>';;
3598: }
3599: return $currentstring;
3600: }
3601:
3602: sub end_insert {
3603: my ($target,$token) = @_;
3604: my $currentstring = '';
3605: if ($target eq 'web' || $target eq 'webgrade') {
3606: $currentstring .= '';
3607: }
3608: return $currentstring;
3609: }
3610:
3611: #-- <externallink>
3612: sub start_externallink {
3613: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3614: my $currentstring = '';
3615: if ($target eq 'web' || $target eq 'webgrade') {
3616: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3617: $currentstring .= '<b>'.$display.'</b>';;
3618: }
3619: return $currentstring;
3620: }
3621:
3622: sub end_externallink {
3623: my ($target,$token) = @_;
3624: my $currentstring = '';
3625: if ($target eq 'web' || $target eq 'webgrade') {
3626: $currentstring .= '';
3627: }
3628: return $currentstring;
3629: }
3630:
3631: #-- <blankspace heigth="">
3632: sub start_blankspace {
3633: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3634: my $currentstring = &end_p(); # closes off any unclosed <p>
3635: if ($target eq 'tex') {
3636: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3637: $currentstring .= '\vskip '.$howmuch.' ';
3638: }
3639: return $currentstring;
3640: }
3641:
3642: sub end_blankspace {
3643: my ($target,$token) = @_;
3644: my $currentstring = '';
3645: if ($target eq 'tex') {
3646: $currentstring .= '';
3647: }
3648: return $currentstring;
3649: }
3650:
3651: #-- <abbr> tag (end tag required)
3652: sub start_abbr {
3653: my ($target,$token) = @_;
3654: my $currentstring = '';
3655: if ($target eq 'web' || $target eq 'webgrade') {
3656: $currentstring = $token->[4];
3657: }
3658: return $currentstring;
3659: }
3660:
3661: sub end_abbr {
3662: my ($target,$token) = @_;
3663: my $currentstring = '';
3664: if ($target eq 'web' || $target eq 'webgrade') {
3665: $currentstring = $token->[2];
3666: }
3667: return $currentstring;
3668: }
3669:
3670: #-- <acronym> tag (end tag required)
3671: sub start_acronym {
3672: my ($target,$token) = @_;
3673: my $currentstring = '';
3674: if ($target eq 'web' || $target eq 'webgrade') {
3675: $currentstring = $token->[4];
3676: }
3677: return $currentstring;
3678: }
3679:
3680: sub end_acronym {
3681: my ($target,$token) = @_;
3682: my $currentstring = '';
3683: if ($target eq 'web' || $target eq 'webgrade') {
3684: $currentstring = $token->[2];
3685: }
3686: return $currentstring;
3687: }
3688:
3689: #-- <area> tag (end tag forbidden)
3690: sub start_area {
3691: my ($target,$token) = @_;
3692: my $currentstring = '';
3693: if ($target eq 'web' || $target eq 'webgrade') {
3694: $currentstring = $token->[4];
3695: }
3696: return $currentstring;
3697: }
3698:
3699: sub end_area {
3700: my ($target,$token) = @_;
3701: my $currentstring = '';
3702: if ($target eq 'web' || $target eq 'webgrade') {
3703: $currentstring = $token->[2];
3704: }
3705: return $currentstring;
3706: }
3707:
3708: #-- <base> tag (end tag forbidden)
3709: sub start_base {
3710: my ($target,$token) = @_;
3711: my $currentstring = '';
3712: if ($target eq 'web' || $target eq 'webgrade') {
3713: $currentstring = $token->[4];
3714: }
3715: return $currentstring;
3716: }
3717:
3718: sub end_base {
3719: my ($target,$token) = @_;
3720: my $currentstring = '';
3721: if ($target eq 'web' || $target eq 'webgrade') {
3722: $currentstring = $token->[2];
3723: }
3724: return $currentstring;
3725: }
3726:
3727: #-- <bdo> tag (end tag required)
3728: sub start_bdo {
3729: my ($target,$token) = @_;
3730: my $currentstring = '';
3731: if ($target eq 'web' || $target eq 'webgrade') {
3732: $currentstring = $token->[4];
3733: }
3734: return $currentstring;
3735: }
3736:
3737: sub end_bdo {
3738: my ($target,$token) = @_;
3739: my $currentstring = '';
3740: if ($target eq 'web' || $target eq 'webgrade') {
3741: $currentstring = $token->[2];
3742: }
3743: return $currentstring;
3744: }
3745:
3746: #-- <bgsound> tag (end tag optional)
3747: sub start_bgsound {
3748: my ($target,$token) = @_;
3749: my $currentstring = '';
3750: if ($target eq 'web' || $target eq 'webgrade') {
3751: $currentstring = $token->[4];
3752: }
3753: return $currentstring;
3754: }
3755:
3756: sub end_bgsound {
3757: my ($target,$token) = @_;
3758: my $currentstring = '';
3759: if ($target eq 'web' || $target eq 'webgrade') {
3760: $currentstring = $token->[2];
3761: }
3762: return $currentstring;
3763: }
3764:
3765: #-- <blink> tag (end tag required)
3766: sub start_blink {
3767: my ($target,$token) = @_;
3768: my $currentstring = '';
3769: if ($target eq 'web' || $target eq 'webgrade') {
3770: $currentstring = $token->[4];
3771: }
3772: return $currentstring;
3773: }
3774:
3775: sub end_blink {
3776: my ($target,$token) = @_;
3777: my $currentstring = '';
3778: if ($target eq 'web' || $target eq 'webgrade') {
3779: $currentstring = $token->[2];
3780: }
3781: return $currentstring;
3782: }
3783:
3784: #-- <blockquote> tag (end tag required)
3785: sub start_blockquote {
3786: my ($target,$token) = @_;
3787: my $currentstring = &end_p(); # Close any unclosed <p>
3788: if ($target eq 'web' || $target eq 'webgrade') {
3789: $currentstring .= $token->[4];
3790: }
3791: if ($target eq 'tex') {
3792: $currentstring .= '\begin{quote}';
3793: }
3794: return $currentstring;
3795: }
3796:
3797: sub end_blockquote {
3798: my ($target,$token) = @_;
3799: my $currentstring = '';
3800: if ($target eq 'web' || $target eq 'webgrade') {
3801: $currentstring = $token->[2];
3802: }
3803: if ($target eq 'tex') {
3804: $currentstring = '\end{quote}';
3805: }
3806: return $currentstring;
3807: }
3808:
3809: #-- <button> tag (end tag required)
3810: sub start_button {
3811: my ($target,$token) = @_;
3812: my $currentstring = '';
3813: if ($target eq 'web' || $target eq 'webgrade') {
3814: $currentstring = $token->[4];
3815: }
3816: return $currentstring;
3817: }
3818:
3819: sub end_button {
3820: my ($target,$token) = @_;
3821: my $currentstring = '';
3822: if ($target eq 'web' || $target eq 'webgrade') {
3823: $currentstring = $token->[2];
3824: }
3825: return $currentstring;
3826: }
3827:
3828: #-- <caption> tag (end tag required)
3829: sub start_caption {
3830: my ($target,$token) = @_;
3831: my $currentstring = '';
3832: if ($target eq 'web' || $target eq 'webgrade') {
3833: $currentstring = $token->[4];
3834: }
3835: return $currentstring;
3836: }
3837:
3838: sub end_caption {
3839: my ($target,$token) = @_;
3840: my $currentstring = '';
3841: if ($target eq 'web' || $target eq 'webgrade') {
3842: $currentstring = $token->[2];
3843: }
3844: return $currentstring;
3845: }
3846:
3847: #-- <col> tag (end tag forbdden)
3848: sub start_col {
3849: my ($target,$token) = @_;
3850: my $currentstring = '';
3851: if ($target eq 'web' || $target eq 'webgrade') {
3852: $currentstring = $token->[4];
3853: }
3854: return $currentstring;
3855: }
3856:
3857: sub end_col {
3858: my ($target,$token) = @_;
3859: my $currentstring = '';
3860: if ($target eq 'web' || $target eq 'webgrade') {
3861: $currentstring = $token->[2];
3862: }
3863: return $currentstring;
3864: }
3865:
3866: #-- <colgroup> tag (end tag optional)
3867: sub start_colgroup {
3868: my ($target,$token) = @_;
3869: my $currentstring = '';
3870: if ($target eq 'web' || $target eq 'webgrade') {
3871: $currentstring = $token->[4];
3872: }
3873: return $currentstring;
3874: }
3875:
3876: sub end_colgroup {
3877: my ($target,$token) = @_;
3878: my $currentstring = '';
3879: if ($target eq 'web' || $target eq 'webgrade') {
3880: $currentstring = $token->[2];
3881: }
3882: return $currentstring;
3883: }
3884:
3885: #-- <del> tag (end tag required)
3886: sub start_del {
3887: my ($target,$token) = @_;
3888: my $currentstring = '';
3889: if ($target eq 'web' || $target eq 'webgrade') {
3890: $currentstring = $token->[4];
3891: }
3892: return $currentstring;
3893: }
3894:
3895: sub end_del {
3896: my ($target,$token) = @_;
3897: my $currentstring = '';
3898: if ($target eq 'web' || $target eq 'webgrade') {
3899: $currentstring = $token->[2];
3900: }
3901: return $currentstring;
3902: }
3903:
3904: #-- <fieldset> tag (end tag required)
3905: sub start_fieldset {
3906: my ($target,$token) = @_;
3907: my $currentstring = '';
3908: if ($target eq 'web' || $target eq 'webgrade') {
3909: $currentstring = $token->[4];
3910: }
3911: return $currentstring;
3912: }
3913:
3914: sub end_fieldset {
3915: my ($target,$token) = @_;
3916: my $currentstring = '';
3917: if ($target eq 'web' || $target eq 'webgrade') {
3918: $currentstring = $token->[2];
3919: }
3920: return $currentstring;
3921: }
3922:
3923: #-- <frame> tag (end tag forbidden)
3924: sub start_frame {
3925: my ($target,$token) = @_;
3926: my $currentstring = '';
3927: if ($target eq 'web' || $target eq 'webgrade') {
3928: $currentstring = $token->[4];
3929: }
3930: return $currentstring;
3931: }
3932:
3933: sub end_frame {
3934: my ($target,$token) = @_;
3935: my $currentstring = '';
3936: if ($target eq 'web' || $target eq 'webgrade') {
3937: $currentstring = $token->[2];
3938: }
3939: return $currentstring;
3940: }
3941:
3942: #-- <iframe> tag (end tag required)
3943: sub start_iframe {
3944: my ($target,$token) = @_;
3945: my $currentstring = '';
3946: if ($target eq 'web' || $target eq 'webgrade') {
3947: $currentstring = $token->[4];
3948: }
3949: return $currentstring;
3950: }
3951:
3952: sub end_iframe {
3953: my ($target,$token) = @_;
3954: my $currentstring = '';
3955: if ($target eq 'web' || $target eq 'webgrade') {
3956: $currentstring = $token->[2];
3957: }
3958: return $currentstring;
3959: }
3960:
3961: #-- <ins> tag (end tag required)
3962: sub start_ins {
3963: my ($target,$token) = @_;
3964: my $currentstring = '';
3965: if ($target eq 'web' || $target eq 'webgrade') {
3966: $currentstring = $token->[4];
3967: }
3968: return $currentstring;
3969: }
3970:
3971: sub end_ins {
3972: my ($target,$token) = @_;
3973: my $currentstring = '';
3974: if ($target eq 'web' || $target eq 'webgrade') {
3975: $currentstring = $token->[2];
3976: }
3977: return $currentstring;
3978: }
3979:
3980: #-- <isindex> tag (end tag forbidden)
3981: sub start_isindex {
3982: my ($target,$token) = @_;
3983: my $currentstring = '';
3984: if ($target eq 'web' || $target eq 'webgrade') {
3985: $currentstring = $token->[4];
3986: }
3987: return $currentstring;
3988: }
3989:
3990: sub end_isindex {
3991: my ($target,$token) = @_;
3992: my $currentstring = '';
3993: if ($target eq 'web' || $target eq 'webgrade') {
3994: $currentstring = $token->[2];
3995: }
3996: return $currentstring;
3997: }
3998:
3999: #-- <keygen> tag (end tag forbidden)
4000: sub start_keygen {
4001: my ($target,$token) = @_;
4002: my $currentstring = '';
4003: if ($target eq 'web' || $target eq 'webgrade') {
4004: $currentstring = $token->[4];
4005: }
4006: return $currentstring;
4007: }
4008:
4009: sub end_keygen {
4010: my ($target,$token) = @_;
4011: my $currentstring = '';
4012: if ($target eq 'web' || $target eq 'webgrade') {
4013: $currentstring = $token->[2];
4014: }
4015: return $currentstring;
4016: }
4017:
4018: #-- <label> tag
4019: sub start_label {
4020: my ($target,$token) = @_;
4021: my $currentstring = '';
4022: if ($target eq 'web' || $target eq 'webgrade') {
4023: $currentstring = $token->[4];
4024: }
4025: return $currentstring;
4026: }
4027:
4028: sub end_label {
4029: my ($target,$token) = @_;
4030: my $currentstring = '';
4031: if ($target eq 'web' || $target eq 'webgrade') {
4032: $currentstring = $token->[2];
4033: }
4034: return $currentstring;
4035: }
4036:
4037: #-- <layer> tag (end tag required)
4038: sub start_layer {
4039: my ($target,$token) = @_;
4040: my $currentstring = '';
4041: if ($target eq 'web' || $target eq 'webgrade') {
4042: $currentstring = $token->[4];
4043: }
4044: return $currentstring;
4045: }
4046:
4047: sub end_layer {
4048: my ($target,$token) = @_;
4049: my $currentstring = '';
4050: if ($target eq 'web' || $target eq 'webgrade') {
4051: $currentstring = $token->[2];
4052: }
4053: return $currentstring;
4054: }
4055:
4056: #-- <legend> tag (end tag required)
4057: sub start_legend {
4058: my ($target,$token) = @_;
4059: my $currentstring = '';
4060: if ($target eq 'web' || $target eq 'webgrade') {
4061: $currentstring = $token->[4];
4062: }
4063: return $currentstring;
4064: }
4065:
4066: sub end_legend {
4067: my ($target,$token) = @_;
4068: my $currentstring = '';
4069: if ($target eq 'web' || $target eq 'webgrade') {
4070: $currentstring = $token->[2];
4071: }
4072: return $currentstring;
4073: }
4074:
4075: #-- <link> tag (end tag forbidden)
4076: sub start_link {
4077: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4078: my $currentstring = '';
4079: if ($target eq 'web' || $target eq 'webgrade') {
4080: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4081: undef,1);
4082: &Apache::lonxml::extlink($href);
4083: $currentstring = $token->[4];
4084: }
4085: return $currentstring;
4086: }
4087:
4088: sub end_link {
4089: my ($target,$token) = @_;
4090: my $currentstring = '';
4091: if ($target eq 'web' || $target eq 'webgrade') {
4092: $currentstring = $token->[2];
4093: }
4094: return $currentstring;
4095: }
4096:
4097: #-- <marquee> tag (end tag optional)
4098: sub start_marquee {
4099: my ($target,$token) = @_;
4100: my $currentstring = '';
4101: if ($target eq 'web' || $target eq 'webgrade') {
4102: $currentstring = $token->[4];
4103: }
4104: return $currentstring;
4105: }
4106:
4107: sub end_marquee {
4108: my ($target,$token) = @_;
4109: my $currentstring = '';
4110: if ($target eq 'web' || $target eq 'webgrade') {
4111: $currentstring = $token->[2];
4112: }
4113: return $currentstring;
4114: }
4115:
4116: #-- <multicol> tag (end tag required)
4117: sub start_multicol {
4118: my ($target,$token) = @_;
4119: my $currentstring = &end_p(); # Close any pending <p>
4120: if ($target eq 'web' || $target eq 'webgrade') {
4121: $currentstring .= $token->[4];
4122: }
4123: return $currentstring;
4124: }
4125:
4126: sub end_multicol {
4127: my ($target,$token) = @_;
4128: my $currentstring = '';
4129: if ($target eq 'web' || $target eq 'webgrade') {
4130: $currentstring = $token->[2];
4131: }
4132: return $currentstring;
4133: }
4134:
4135: #-- <nobr> tag (end tag required)
4136: sub start_nobr {
4137: my ($target,$token) = @_;
4138: my $currentstring = '';
4139: if ($target eq 'web' || $target eq 'webgrade') {
4140: $currentstring = $token->[4];
4141: } elsif ($target eq 'tex') {
4142: $currentstring='\mbox{';
4143: }
4144: return $currentstring;
4145: }
4146:
4147: sub end_nobr {
4148: my ($target,$token) = @_;
4149: my $currentstring = '';
4150: if ($target eq 'web' || $target eq 'webgrade') {
4151: $currentstring = $token->[2];
4152: } elsif ($target eq 'tex') {
4153: $currentstring='}';
4154: }
4155: return $currentstring;
4156: }
4157:
4158: #-- <noembed> tag (end tag required)
4159: sub start_noembed {
4160: my ($target,$token) = @_;
4161: my $currentstring = '';
4162: if ($target eq 'web' || $target eq 'webgrade') {
4163: $currentstring = $token->[4];
4164: }
4165: return $currentstring;
4166: }
4167:
4168: sub end_noembed {
4169: my ($target,$token) = @_;
4170: my $currentstring = '';
4171: if ($target eq 'web' || $target eq 'webgrade') {
4172: $currentstring = $token->[2];
4173: }
4174: return $currentstring;
4175: }
4176:
4177: #-- <noframes> tag (end tag required)
4178: sub start_noframes {
4179: my ($target,$token) = @_;
4180: my $currentstring = '';
4181: if ($target eq 'web' || $target eq 'webgrade') {
4182: $currentstring = $token->[4];
4183: }
4184: return $currentstring;
4185: }
4186:
4187: sub end_noframes {
4188: my ($target,$token) = @_;
4189: my $currentstring = '';
4190: if ($target eq 'web' || $target eq 'webgrade') {
4191: $currentstring = $token->[2];
4192: }
4193: return $currentstring;
4194: }
4195:
4196: #-- <nolayer> tag (end tag required)
4197: sub start_nolayer {
4198: my ($target,$token) = @_;
4199: my $currentstring = '';
4200: if ($target eq 'web' || $target eq 'webgrade') {
4201: $currentstring = $token->[4];
4202: }
4203: return $currentstring;
4204: }
4205:
4206: sub end_nolayer {
4207: my ($target,$token) = @_;
4208: my $currentstring = '';
4209: if ($target eq 'web' || $target eq 'webgrade') {
4210: $currentstring = $token->[2];
4211: }
4212: return $currentstring;
4213: }
4214:
4215: #-- <noscript> tag (end tag required)
4216: sub start_noscript {
4217: my ($target,$token) = @_;
4218: my $currentstring = '';
4219: if ($target eq 'web' || $target eq 'webgrade') {
4220: $currentstring = $token->[4];
4221: }
4222: return $currentstring;
4223: }
4224:
4225: sub end_noscript {
4226: my ($target,$token) = @_;
4227: my $currentstring = '';
4228: if ($target eq 'web' || $target eq 'webgrade') {
4229: $currentstring = $token->[2];
4230: }
4231: return $currentstring;
4232: }
4233:
4234: #-- <object> tag (end tag required)
4235: sub start_object {
4236: my ($target,$token) = @_;
4237: my $currentstring = '';
4238: if ($target eq 'web' || $target eq 'webgrade') {
4239: $currentstring = $token->[4];
4240: }
4241: return $currentstring;
4242: }
4243:
4244: sub end_object {
4245: my ($target,$token) = @_;
4246: my $currentstring = '';
4247: if ($target eq 'web' || $target eq 'webgrade') {
4248: $currentstring = $token->[2];
4249: }
4250: return $currentstring;
4251: }
4252:
4253: #-- <optgroup> tag (end tag required)
4254: sub start_optgroup {
4255: my ($target,$token) = @_;
4256: my $currentstring = '';
4257: if ($target eq 'web' || $target eq 'webgrade') {
4258: $currentstring = $token->[4];
4259: }
4260: return $currentstring;
4261: }
4262:
4263: sub end_optgroup {
4264: my ($target,$token) = @_;
4265: my $currentstring = '';
4266: if ($target eq 'web' || $target eq 'webgrade') {
4267: $currentstring = $token->[2];
4268: }
4269: return $currentstring;
4270: }
4271:
4272: #-- <samp> tag (end tag required)
4273: sub start_samp {
4274: my ($target,$token) = @_;
4275: my $currentstring = '';
4276: if ($target eq 'web' || $target eq 'webgrade') {
4277: $currentstring = $token->[4];
4278: } elsif ($target eq 'tex') {
4279: $currentstring='\texttt{';
4280: }
4281: return $currentstring;
4282: }
4283:
4284: sub end_samp {
4285: my ($target,$token) = @_;
4286: my $currentstring = '';
4287: if ($target eq 'web' || $target eq 'webgrade') {
4288: $currentstring = $token->[2];
4289: } elsif ($target eq 'tex') {
4290: $currentstring='}';
4291: }
4292: return $currentstring;
4293: }
4294:
4295: #-- <server> tag
4296: sub start_server {
4297: my ($target,$token) = @_;
4298: my $currentstring = '';
4299: if ($target eq 'web' || $target eq 'webgrade') {
4300: $currentstring = $token->[4];
4301: }
4302: return $currentstring;
4303: }
4304:
4305: sub end_server {
4306: my ($target,$token) = @_;
4307: my $currentstring = '';
4308: if ($target eq 'web' || $target eq 'webgrade') {
4309: $currentstring = $token->[2];
4310: }
4311: return $currentstring;
4312: }
4313:
4314: #-- <spacer> tag (end tag forbidden)
4315: sub start_spacer {
4316: my ($target,$token) = @_;
4317: my $currentstring = &end_p(); # Close off any open <p> tag.
4318: if ($target eq 'web' || $target eq 'webgrade') {
4319: $currentstring .= $token->[4];
4320: }
4321: return $currentstring;
4322: }
4323:
4324: sub end_spacer {
4325: my ($target,$token) = @_;
4326: my $currentstring = '';
4327: if ($target eq 'web' || $target eq 'webgrade') {
4328: $currentstring = $token->[2];
4329: }
4330: return $currentstring;
4331: }
4332:
4333: #-- <span> tag (end tag required)
4334: sub start_span {
4335: my ($target,$token) = @_;
4336: my $currentstring = '';
4337: if ($target eq 'web' || $target eq 'webgrade') {
4338: $currentstring = $token->[4];
4339: }
4340: return $currentstring;
4341: }
4342:
4343: sub end_span {
4344: my ($target,$token) = @_;
4345: my $currentstring = '';
4346: if ($target eq 'web' || $target eq 'webgrade') {
4347: $currentstring = $token->[2];
4348: }
4349: return $currentstring;
4350: }
4351:
4352: #-- <tbody> tag (end tag optional)
4353: sub start_tbody {
4354: my ($target,$token) = @_;
4355: my $currentstring = '';
4356: if ($target eq 'web' || $target eq 'webgrade') {
4357: $currentstring = $token->[4];
4358: }
4359: return $currentstring;
4360: }
4361:
4362: sub end_tbody {
4363: my ($target,$token) = @_;
4364: my $currentstring = '';
4365: if ($target eq 'web' || $target eq 'webgrade') {
4366: $currentstring = $token->[2];
4367: }
4368: return $currentstring;
4369: }
4370:
4371: #-- <tfoot> tag (end tag optional)
4372: sub start_tfoot {
4373: my ($target,$token) = @_;
4374: my $currentstring = '';
4375: if ($target eq 'web' || $target eq 'webgrade') {
4376: $currentstring = $token->[4];
4377: }
4378: return $currentstring;
4379: }
4380:
4381: sub end_tfoot {
4382: my ($target,$token) = @_;
4383: my $currentstring = '';
4384: if ($target eq 'web' || $target eq 'webgrade') {
4385: $currentstring = $token->[2];
4386: }
4387: return $currentstring;
4388: }
4389:
4390: #-- <thead> tag (end tag optional)
4391: sub start_thead {
4392: my ($target,$token) = @_;
4393: my $currentstring = '';
4394: if ($target eq 'web' || $target eq 'webgrade') {
4395: $currentstring = $token->[4];
4396: }
4397: return $currentstring;
4398: }
4399:
4400: sub end_thead {
4401: my ($target,$token) = @_;
4402: my $currentstring = '';
4403: if ($target eq 'web' || $target eq 'webgrade') {
4404: $currentstring = $token->[2];
4405: }
4406: return $currentstring;
4407: }
4408:
4409: #-- <var> tag
4410: sub start_var {
4411: my ($target,$token) = @_;
4412: my $currentstring = '';
4413: if ($target eq 'web' || $target eq 'webgrade') {
4414: $currentstring = $token->[4];
4415: } elsif ($target eq 'tex') {
4416: $currentstring = '\textit{';
4417: }
4418: return $currentstring;
4419: }
4420:
4421: sub end_var {
4422: my ($target,$token) = @_;
4423: my $currentstring = '';
4424: if ($target eq 'web' || $target eq 'webgrade') {
4425: $currentstring = $token->[2];
4426: } elsif ($target eq 'tex') {
4427: $currentstring = '}';
4428: }
4429: return $currentstring;
4430: }
4431:
4432: #-- <wbr> tag (end tag forbidden)
4433: sub start_wbr {
4434: my ($target,$token) = @_;
4435: my $currentstring = '';
4436: if ($target eq 'web' || $target eq 'webgrade') {
4437: $currentstring = $token->[4];
4438: }
4439: return $currentstring;
4440: }
4441:
4442: sub end_wbr {
4443: my ($target,$token) = @_;
4444: my $currentstring = '';
4445: if ($target eq 'web' || $target eq 'webgrade') {
4446: $currentstring = $token->[2];
4447: }
4448: return $currentstring;
4449: }
4450:
4451: #-- <hideweboutput> tag
4452: sub start_hideweboutput {
4453: my ($target,$token) = @_;
4454: if ($target eq 'web' || $target eq 'webgrade') {
4455: &Apache::lonxml::startredirection();
4456: }
4457: return '';
4458: }
4459:
4460: sub end_hideweboutput {
4461: my ($target,$token) = @_;
4462: my $currentstring = '';
4463: if ($target eq 'web' || $target eq 'webgrade') {
4464: $currentstring = &Apache::lonxml::endredirection();
4465: }
4466: return '';
4467: }
4468:
4469:
4470: sub image_replication {
4471: my $src = shift;
4472: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4473: #replicates eps or ps
4474: my $epssrc = my $pssrc = $src;
4475: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4476: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4477: if (not -e $epssrc && not -e $pssrc) {
4478: my $result=&Apache::lonnet::repcopy($epssrc);
4479: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4480: }
4481: return '';
4482: }
4483:
4484:
4485:
4486: sub resize_image {
4487: my ($height_param, $width_param, $scaling,
4488: $parstack, $safeeval, $depth, $cis) = @_;
4489:
4490: # First apply the scaling...
4491:
4492: $height_param = $height_param * $scaling;
4493: $width_param = $width_param * $scaling;
4494:
4495: #do we have any specified LaTeX size of the picture?
4496: my $toget='TeXwidth';
4497: if ($cis) {
4498: $toget=lc($toget);
4499: }
4500: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4501: $safeeval,$depth,$cis);
4502: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4503: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4504: $safeeval,$depth,$cis);
4505: #do we have any specified web size of the picture?
4506: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4507: $depth,1);
4508: if ($TeXwidth) {
4509: my $old_width_param=$width_param;
4510: if ($TeXwidth=~/(\d+)\s*\%/) {
4511: $width_param = $1*$env{'form.textwidth'}/100;
4512: } else {
4513: $width_param = $TeXwidth;
4514: }
4515: if ($TeXheight) {
4516: $height_param = $TeXheight;
4517: } elsif ($old_width_param) {
4518: $height_param=$TeXwidth/$old_width_param*$height_param;
4519: }
4520: } elsif ($TeXheight) {
4521: $height_param = $TeXheight;
4522: if ($height_param) {
4523: $width_param = $TeXheight/$height_param*$width_param;
4524: }
4525: } elsif ($width) {
4526: my $old_width_param=$width_param;
4527: $width_param = $width*$scaling;
4528: if ($old_width_param) {
4529: $height_param=$width_param/$old_width_param*$height_param;
4530: }
4531: }
4532: if ($width_param > $env{'form.textwidth'}) {
4533: my $old_width_param=$width_param;
4534: $width_param =0.95*$env{'form.textwidth'};
4535: if ($old_width_param) {
4536: $height_param=$width_param/$old_width_param*$height_param;
4537: }
4538: }
4539:
4540: return ($height_param, $width_param);
4541: }
4542:
4543: sub image_size {
4544: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4545:
4546: #size of image from gif/jpg/jpeg/png
4547: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4548: if (-e $ressrc) {
4549: $src = $ressrc;
4550: }
4551: my $image = Image::Magick->new;
4552: my $current_figure = $image->Read($src);
4553: my $width_param = $image->Get('width');
4554: my $height_param = $image->Get('height');
4555: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4556: undef($image);
4557:
4558: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4559: $scaling, $parstack, $safeeval,
4560: $depth, $cis);
4561:
4562: return ($height_param, $width_param);
4563: }
4564:
4565: sub image_width {
4566: my ($height, $width) = &image_size(@_);
4567: return $width;
4568: }
4569: # Not yet 100% sure this is correct in all circumstances..
4570: # due to my uncertainty about mods to image_size.
4571: #
4572: sub image_height {
4573: my ($height, $width) = &image_size(@_);
4574: return $height;
4575: }
4576:
4577: sub get_eps_image {
4578: my ($src)=@_;
4579: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4580:
4581: # In order to prevent the substitution of the alt text, we need to
4582: # be sure the orig_src file is on system now so:
4583:
4584: if (! -e $orig_src) {
4585: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4586: }
4587: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4588: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4589: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4590: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4591: &Apache::lonxml::debug("Filelocation gives: $src");
4592: if (! -e $src) {
4593: &Apache::lonxml::debug("$src does not exist");
4594: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4595: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4596: #if replication failed try to find ps file
4597: $src=~s/\.eps$/\.ps/;
4598: &Apache::lonxml::debug("Now looking for $src");
4599: #if no ps file try to replicate it.
4600: my $didrepcopy = &Apache::lonnet::repcopy($src);
4601: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4602: if ( (not -e $src) ||
4603: ($didrepcopy ne 'ok')) {
4604: &Apache::lonxml::debug("Failed to find or replicate $src");
4605:
4606: #if replication failed try to produce eps file dynamically
4607: $src=~s/\.ps$/\.eps/;
4608: my $temp_file;
4609: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4610: my $newsrc=$orig_src;
4611: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4612: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4613: print FILE ("$newsrc\n");
4614: close(FILE);
4615: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4616: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4617: if ($sext ne "") { # Put the ext. back in to uniquify.
4618: $src =~ s/\.eps$/$sext.eps/;
4619: }
4620:
4621: }
4622:
4623: }
4624: } else {
4625: # If the postscript file has spaces in its name,
4626: # LaTeX will gratuitiously vomit. Therefore
4627: # queue such files for copy with " " replaced by "_".
4628: # printout.pm will know them by their .ps or .eps extensions.
4629: my $newsrc = $orig_src;
4630: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4631: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4632: print FILE "$src\n";
4633: close FILE;
4634: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4635: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4636: }
4637: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4638: $path =~ s/ /\_/g;
4639: $file =~ s/ /\_/g;
4640: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4641: return ($path.'/',$file);
4642: }
4643:
4644: sub eps_generation {
4645: my ($src,$file,$width_param) = @_;
4646: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4647: my $temp_file = Apache::File->new('>>'.$filename);
4648: print $temp_file "$src\n";
4649: my $newsrc = $src;
4650: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4651: $newsrc=~s{/home/httpd/html/res}{};
4652: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4653: $newsrc=~s{/\./}{/};
4654: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4655: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4656: $newsrc=~s{/home/httpd/lonUsers}{};
4657: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4658: }
4659: if ($newsrc=~m{/userfiles/}) {
4660: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4661: } else {
4662: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4663: }
4664: }
4665:
4666: sub file_path {
4667: my $src=shift;
4668: my ($file,$path);
4669: if ($src =~ m!(.*)/([^/]*)$!) {
4670: $file = $2;
4671: $path = $1.'/';
4672: }
4673: return $file,$path;
4674: }
4675:
4676:
4677: sub recalc {
4678: my $argument = shift;
4679: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4680: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4681: my $value=$1;
4682: my $units=$2;
4683: if ($units eq 'cm') {
4684: $value*=10;
4685: } elsif ($units eq 'in') {
4686: $value*=25.4;
4687: } elsif ($units eq 'pc') {
4688: $value*=(25.4*12/72.27);
4689: } elsif ($units eq 'pt') {
4690: $value*=(25.4/72.27);
4691: }
4692: return $value.' mm';
4693: }
4694:
4695: sub LATEX_length {
4696: my $garbage=shift;
4697: $garbage=~s/^\s+$//;
4698: $garbage=~s/^\s+(\S.*)/$1/;#space before
4699: $garbage=~s/(.*\S)\s+$/$1/;#space after
4700: $garbage=~s/(\s)+/$1/;#only one space
4701: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4702: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4703: $garbage=~s/([^\\])\$/$1/g;#$
4704: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4705: $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;
4706: $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;
4707: $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;
4708: $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;
4709: $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;
4710: $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;
4711: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4712: #remove some other LaTeX command
4713: $garbage=~s|\\(\w+)\\|\\|g;
4714: $garbage=~s|\\(\w+)(\s*)|$2|g;
4715: $garbage=~s|\+|11|g;
4716: my $value=length($garbage);
4717: return $value;
4718: }
4719:
4720:
4721: sub align_latex_image {
4722: my ($align, $latex_rendering, $image, $width, $height) = @_;
4723: my $currentstring; # The 1/2 wrapped image.
4724: my $closure; # The closure of the wrappage.
4725:
4726: # if it's none just return it back
4727: if ($latex_rendering eq 'none') {
4728: return ($image,'');
4729: }
4730:
4731: # If there's an alignment specification we need to honor it here.
4732: # For the horizontal alignments, we will also honor the
4733: # value of the latex specfication. The default is parbox,
4734: # and that's used for illegal values too.
4735: #
4736: # Even though we set a default alignment value, the user
4737: # could have given us an illegal value. In that case we
4738: # just use the default alignment of bottom..
4739: $currentstring = "\n% figurewrapping \n";
4740: if ($align eq "top") {
4741: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4742: $closure = '}';
4743: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4744: my $offset = $height/2;
4745: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4746: $closure = '}';
4747: } elsif ($align eq "left") {
4748: if ($latex_rendering eq "parpic") {
4749: $currentstring .= '\parpic[l]{'.$image;
4750: $closure = '}';
4751: } elsif ($latex_rendering eq "parbox") {
4752: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4753: .$image;
4754: $closure = '\end{minipage}';
4755: } elsif ($latex_rendering eq "wrapfigure"
4756: || $latex_rendering ne 'none') { # wrapfig render
4757: $currentstring .=
4758: '\begin{wrapfigure}{l}{'.$width.'mm}'
4759: .'\scalebox{1.0}{'.$image;
4760: $closure = '}\end{wrapfigure}';
4761: }
4762: } elsif ($align eq "right") {
4763: if ($latex_rendering eq "parpic") {
4764: $currentstring .= '\parpic[r]{'.$image;
4765: $closure = '}';
4766: } elsif ($latex_rendering eq "parbox") {
4767: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4768: .$image;
4769: $closure = '\end{minipage}';
4770: } elsif ($latex_rendering eq "wrapfigure"
4771: || $latex_rendering ne 'none') { # wrapfig render
4772: $currentstring .=
4773: '\begin{wrapfigure}{r}{'.$width.'mm}'
4774: .'\scalebox{1.0}{'.$image;
4775: $closure = '}\end{wrapfigure}';
4776: }
4777: } else { # Bottom is also default.
4778: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4779: $currentstring .= "{$image";
4780: $closure = '}';
4781: }
4782: $currentstring .= "\n% end wrappage\n";
4783: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4784: return ($currentstring, $closure);
4785: }
4786:
4787:
4788: sub is_inside_of {
4789: my ($tagstack, $tag) = @_;
4790: my @stack = @$tagstack;
4791: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4792: if ($stack[$i] eq $tag) {
4793: return 1;
4794: }
4795: }
4796: return 0;
4797: }
4798:
4799:
4800: #
4801: # This sub provides the typical LaTeX prefix matter for tex output:
4802: #
4803: sub latex_header
4804: {
4805: my ($mode) = @_;
4806: my $currentstring = '';
4807:
4808: $currentstring .=
4809: "\n% &Apache::lonxml::londefdef \n" .
4810: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4811: if (($env{'form.latex_type'}=~'batchmode') ||
4812: (!$env{'request.role.adv'}) ||
4813: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4814: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4815: '\renewcommand{\deg}{$^{\circ}$}'.
4816: '\usepackage{multirow}'.
4817: '\usepackage{longtable}'.
4818: '\usepackage{textcomp}'.
4819: '\usepackage{makeidx}'.
4820: '\usepackage[dvips]{graphicx}'.
4821: '\usepackage{wrapfig}'.
4822: '\usepackage{picins}'.
4823: '\usepackage[T1]{fontenc}'."\n".
4824: '\usepackage{lmodern}'."\n".
4825: '\usepackage[postscript]{ucs}'."\n".
4826: '\usepackage[utf8x]{inputenc}'."\n".
4827: '\usepackage{pifont}' ."\n".
4828: '\usepackage{latexsym}'."\n".
4829: '\usepackage{epsfig}'.
4830: "\\usepackage{xtab}\n".
4831: "\\usepackage{tabularx}\n".
4832: "\\usepackage{booktabs}\n".
4833: "\\usepackage{array}\n".
4834: "\\usepackage{colortbl}\n".
4835: "\\usepackage{xcolor}\n".
4836: '\usepackage{calc}'.
4837: '\usepackage{amsmath}'.
4838: '\usepackage{amssymb}'.
4839: '\usepackage{amsfonts}'.
4840: '\usepackage{amsthm}'.
4841: '\usepackage{amscd}'
4842: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4843: '\usepackage[T1]{fontenc}'."\n".
4844: '\usepackage{lmodern}'."\n".
4845: '\usepackage[postscript]{ucs}'."\n".
4846: '\usepackage[utf8x]{inputenc}'."\n".
4847: '\usepackage{pifont}' . "\n";
4848:
4849: if($env{'form.pdfFormFields'} eq 'yes') {
4850: $currentstring .= '\usepackage{hyperref}'.
4851: '\usepackage{eforms}'.
4852: '\usepackage{tabularx}';
4853: }
4854:
4855: $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}}'.
4856: '\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}}';
4857: $currentstring .= '\begin{document}';
4858:
4859: return $currentstring;
4860:
4861: }
4862:
4863: =pod
4864:
4865: =head1 NAME
4866:
4867: Apache::londefdef.pm
4868:
4869: =head1 SYNOPSIS
4870:
4871: Tags Default Definition Module
4872:
4873: This is part of the LearningOnline Network with CAPA project
4874: described at http://www.lon-capa.org.
4875:
4876:
4877: =head1 NOTABLE SUBROUTINES
4878:
4879: =over
4880:
4881: =item start_hideweboutput()
4882:
4883: =item end_hideweboutput()
4884:
4885: =item image_replication()
4886:
4887: =item resize_image()
4888:
4889: Get correct sizing parameter for an image given
4890: it's initial ht. and wid. This allows sizing of
4891: images that are generated on-the-fly (e.g. gnuplot)
4892: as well as serving as a utility for image_size.
4893:
4894: Parameter:
4895: height_param
4896: width_param - Initial picture dimensions.
4897: scaling - A scale factor.
4898: parstack, - the current stack of tag attributes
4899: from the xml parser
4900: safeeval, - pointer to the safespace
4901: depth, - from what level in the stack to look for attributes
4902: (assumes -1 if unspecified)
4903: cis - look for attrubutes case insensitively
4904: (assumes false)
4905:
4906: Returns:
4907: height, width - new dimensions.
4908:
4909: =item image_size()
4910:
4911: =item image_width()
4912:
4913: =item image_height()
4914:
4915: =item get_eps_image()
4916:
4917: =item eps_generation()
4918:
4919: =item file_path()
4920:
4921: =item recalc()
4922:
4923: Converts a measurement in to mm from any of
4924: the other valid LaTeX units of measure.
4925: If the units of measure are missing from the
4926: parameter, it is assumed to be in and returned
4927: with mm units of measure
4928:
4929: =item LATEX_length()
4930:
4931: =item align_latex_image()
4932:
4933: Wrap image 'stuff' inside of the LaTeX required to implement
4934: alignment:
4935: align_tex_image(align, latex_rendering, image)
4936: Where:
4937: align - The HTML alignment specification.
4938: latex_rendering - rendering hint for latex.
4939: image - The LaTeX needed to insert the image itsef.
4940: width,height - dimensions of the image.
4941: Returns:
4942: The 1/2 wrapped image and the stuff required to close the
4943: wrappage. This allows e.g. randomlabel to insert more stuff
4944: into the closure.
4945:
4946:
4947: =item is_inside_of($tagstack, $tag)
4948: This sub returns true if the current state of Xml processing is inside of the tag.
4949: Parameters:
4950: tagstack - The tagstack from the parser.
4951: tag - The tag (without the <>'s.).
4952: Sample usage:
4953: if (is_inside_of($tagstack "table")) {
4954: I'm in a table....
4955: }
4956:
4957:
4958:
4959: =back
4960:
4961: =cut
4962:
4963:
4964: 1;
4965: __END__
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