1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.403.4.4 2010/11/18 18:07:02 raeburn 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: $currentstring =
542: &Apache::loncommon::start_page($Apache::londefdef::title,
543: $Apache::londefdef::head
544: .$extra_head,
545: {'add_entries' => $token->[2],
546: 'no_title' => 1,
547: 'force_register' => 1});
548:
549: if ($env{'request.state'} ne 'published') {
550: $currentstring.=&Apache::lonmenu::constspaceform();
551: $currentstring.=&Apache::londefdef::edit_controls();
552: }
553: $currentstring.=&Apache::lonxml::message_location();
554: } elsif ($target eq 'tex') {
555: $currentstring = ''; # '\begin{document}' is in header.
556: }
557: return $currentstring;
558: }
559:
560: sub edit_controls {
561: my ($nochgview) = @_;
562: my $result .= '
563: <form method="post">
564: <div class="LC_edit_problem_header">';
565: unless ($nochgview) {
566: $result .= '
567: <div class="LC_edit_problem_header_row1">'.
568: &Apache::lonxml::renderingoptions().'
569: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
570: </div>';
571: }
572: $result .= '
573: <div class="LC_edit_problem_header_edit_row"><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" /></div></div>
574: </form>
575: <br />';
576: return $result;
577: }
578:
579: sub end_body {
580: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
581: my $currentstring = &end_p(); # Close off unclosed <p>
582: if ($target eq 'web' || $target eq 'webgrade') {
583: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
584: } elsif ($target eq 'tex') {
585: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
586: }
587: return $currentstring;
588: }
589:
590: # \begin{center} causes a new paragprah spacing that looks odd inside
591: # of a table cell. Same at the end of a \center but with a slightly
592: # larger space .. hence center_correction and center_end_correction.
593: #
594: sub center_correction { return '\vspace*{-6 mm}'; }
595: sub center_end_correction { return '\vspace*{-7 mm}'; }
596:
597: #-- <center> tag (end tag required)
598: sub start_center {
599: my ($target,$token,$tagstack) = @_;
600: my $currentstring = &end_p(); # Close off any prior para.
601: if ($target eq 'web' || $target eq 'webgrade') {
602: $currentstring .= $token->[4];
603: } elsif ($target eq 'tex') {
604: if (&is_inside_of($tagstack, "table")) {
605: $currentstring .= ¢er_correction();
606: }
607: $currentstring .= '\begin{center}';
608: }
609: return $currentstring;
610: }
611:
612: sub end_center {
613: my ($target,$token,$tagstack) = @_;
614: my $currentstring = '';
615: if ($target eq 'web' || $target eq 'webgrade') {
616: $currentstring = $token->[2];
617: } elsif ($target eq 'tex') {
618: $currentstring = '\end{center}';
619: if (&is_inside_of($tagstack, "table")) {
620: $currentstring .= ¢er_end_correction();
621: }
622: }
623: return $currentstring;
624: }
625:
626: #-- <b> tag (end tag required)
627: # NOTE: In TeX mode disables internal <p>
628: sub start_b {
629: my ($target,$token) = @_;
630: my $currentstring = '';
631: if ($target eq 'web' || $target eq 'webgrade') {
632: $currentstring = $token->[4];
633: } elsif ($target eq 'tex') {
634: &disable_para();
635: $currentstring .= '\textbf{';
636: }
637: return $currentstring;
638: }
639:
640: sub end_b {
641: my ($target,$token) = @_;
642: my $currentstring = '';
643: if ($target eq 'web' || $target eq 'webgrade') {
644: $currentstring = $token->[2];
645: } elsif ($target eq 'tex') {
646: &enable_para();
647: $currentstring = '}';
648: }
649: return $currentstring;
650: }
651:
652: #-- <strong> tag (end tag required)
653: # NOTE: in TeX mode disables internal <p>
654: sub start_strong {
655: my ($target,$token) = @_;
656: my $currentstring = '';
657: if ($target eq 'web' || $target eq 'webgrade') {
658: $currentstring = $token->[4];
659: } elsif ($target eq 'tex') {
660: &disable_para();
661: $currentstring = '\textbf{';
662: }
663: return $currentstring;
664: }
665:
666: sub end_strong {
667: my ($target,$token) = @_;
668: my $currentstring = '';
669: if ($target eq 'web' || $target eq 'webgrade') {
670: $currentstring = $token->[2];
671: } elsif ($target eq 'tex') {
672: &enable_para();
673: $currentstring = '}';
674: }
675: return $currentstring;
676: }
677:
678: #-- <h1> tag (end tag required)
679: sub start_h1 {
680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
681: my $currentstring = &end_p(); # Close off any prior para.
682: if ($target eq 'web' || $target eq 'webgrade') {
683: $currentstring .= $token->[4];
684: } elsif ($target eq 'tex') {
685: my $pre;
686: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
687: if ($align eq 'center') {
688: $pre='\begin{center}';
689: } elsif ($align eq 'left') {
690: $pre='\rlap{';
691: } elsif ($align eq 'right') {
692: $pre=' \hfill \llap{';
693: }
694: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
695: if (not defined $TeXsize) {$TeXsize="large";}
696: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
697: } elsif ($target eq 'meta') {
698: $currentstring.='<subject>';
699: &start_output($target);
700: }
701: return $currentstring;
702: }
703:
704: sub end_h1 {
705: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
706: my $currentstring = '';
707: if ($target eq 'web' || $target eq 'webgrade') {
708: $currentstring .= $token->[2];
709: } elsif ($target eq 'tex') {
710: my $post='\vskip 0 mm ';
711: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
712: if ($align eq 'center') {
713: $post='\end{center}';
714: } elsif ($align eq 'left') {
715: $post='} \hfill'.'\vskip 0 mm ';
716: } elsif ($align eq 'right') {
717: $post='}'.'\vskip 0 mm ';
718: }
719: $currentstring .= '}}'.$post;
720: } elsif ($target eq 'meta') {
721: &end_output($target);
722: $currentstring='</subject>';
723: }
724: return $currentstring;
725: }
726:
727: #-- <h2> tag
728: sub start_h2 {
729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
730: my $currentstring = &end_p(); # Close off any prior para.
731: if ($target eq 'web' || $target eq 'webgrade') {
732: $currentstring .= $token->[4];
733: } elsif ($target eq 'tex') {
734: my $pre;
735: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
736: if ($align eq 'center') {
737: $pre='\begin{center}';
738: } elsif ($align eq 'left') {
739: $pre='\rlap{';
740: } elsif ($align eq 'right') {
741: $pre=' \hfill \llap{';
742: }
743: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
744: if (not defined $TeXsize) {$TeXsize="large";}
745: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
746: }
747: return $currentstring;
748: }
749:
750: sub end_h2 {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
752: my $currentstring = '';
753: if ($target eq 'web' || $target eq 'webgrade') {
754: $currentstring .= $token->[2];
755: } elsif ($target eq 'tex') {
756: my $post='\vskip 0 mm ';
757: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
758: if ($align eq 'center') {
759: $post='\end{center}';
760: } elsif ($align eq 'left') {
761: $post='} \hfill'.'\vskip 0 mm ';
762: } elsif ($align eq 'right') {
763: $post='}'.'\vskip 0 mm ';
764: }
765: $currentstring .= '}}'.$post;
766: }
767: return $currentstring;
768: }
769:
770: #-- <h3> tag
771: sub start_h3 {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
773: my $currentstring = &end_p(); # Close off any prior para.
774: if ($target eq 'web' || $target eq 'webgrade') {
775: $currentstring .= $token->[4];
776: } elsif ($target eq 'tex') {
777: my $pre;
778: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
779: if ($align eq 'center') {
780: $pre='\begin{center}';
781: } elsif ($align eq 'left') {
782: $pre='\rlap{';
783: } elsif ($align eq 'right') {
784: $pre=' \hfill \llap{';
785: }
786: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
787: if (not defined $TeXsize) {$TeXsize="large";}
788: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
789: }
790: return $currentstring;
791: }
792:
793: sub end_h3 {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
795: my $currentstring = '';
796: if ($target eq 'web' || $target eq 'webgrade') {
797: $currentstring .= $token->[2];
798: } elsif ($target eq 'tex') {
799: my $post='\vskip 0 mm ';
800: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
801: if ($align eq 'center') {
802: $post='\end{center}';
803: } elsif ($align eq 'left') {
804: $post='} \hfill'.'\vskip 0 mm ';
805: } elsif ($align eq 'right') {
806: $post='}'.'\vskip 0 mm ';
807: }
808: $currentstring .= '}}'.$post;
809: }
810: return $currentstring;
811: }
812:
813: #-- <h4> tag
814: sub start_h4 {
815: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
816: my $currentstring = &end_p(); # Close off any prior para.
817: if ($target eq 'web' || $target eq 'webgrade') {
818: $currentstring .= $token->[4];
819: } elsif ($target eq 'tex') {
820: my $pre;
821: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
822: if ($align eq 'center') {
823: $pre='\begin{center}';
824: } elsif ($align eq 'left') {
825: $pre='\rlap{';
826: } elsif ($align eq 'right') {
827: $pre=' \hfill \llap{';
828: }
829: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
830: if (not defined $TeXsize) {$TeXsize="large";}
831: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
832: }
833: return $currentstring;
834: }
835:
836: sub end_h4 {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
838: my $currentstring = '';
839: if ($target eq 'web' || $target eq 'webgrade') {
840: $currentstring .= $token->[2];
841: } elsif ($target eq 'tex') {
842: my $post='\vskip 0 mm ';
843: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
844: if ($align eq 'center') {
845: $post='\end{center}';
846: } elsif ($align eq 'left') {
847: $post='} \hfill'.'\vskip 0 mm ';
848: } elsif ($align eq 'right') {
849: $post='}'.'\vskip 0 mm ';
850: }
851: $currentstring .= '}}'.$post;
852: }
853: return $currentstring;
854: }
855:
856: #-- <h5> tag
857: sub start_h5 {
858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
859: my $currentstring = &end_p(); # Close off any prior paras.
860: if ($target eq 'web' || $target eq 'webgrade') {
861: $currentstring .= $token->[4];
862: } elsif ($target eq 'tex') {
863: my $pre;
864: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
865: if ($align eq 'center') {
866: $pre='\begin{center}';
867: } elsif ($align eq 'left') {
868: $pre='\rlap{';
869: } elsif ($align eq 'right') {
870: $pre=' \hfill \llap{';
871: }
872: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
873: if (not defined $TeXsize) {$TeXsize="large";}
874: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
875: }
876: return $currentstring;
877: }
878:
879: sub end_h5 {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
881: my $currentstring = '';
882: if ($target eq 'web' || $target eq 'webgrade') {
883: $currentstring .= $token->[2];
884: } elsif ($target eq 'tex') {
885: my $post='\vskip 0 mm ';
886: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
887: if ($align eq 'center') {
888: $post='\end{center}';
889: } elsif ($align eq 'left') {
890: $post='} \hfill'.'\vskip 0 mm ';
891: } elsif ($align eq 'right') {
892: $post='}'.'\vskip 0 mm ';
893: }
894: $currentstring .= '}}'.$post;
895: }
896: return $currentstring;
897: }
898:
899: #-- <h6> tag
900: sub start_h6 {
901: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
902: my $currentstring = &end_p(); # Close off any prior paras.
903: if ($target eq 'web' || $target eq 'webgrade') {
904: $currentstring .= $token->[4];
905: } elsif ($target eq 'tex') {
906: my $pre;
907: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
908: if ($align eq 'center') {
909: $pre='\begin{center}';
910: } elsif ($align eq 'left') {
911: $pre='\rlap{';
912: } elsif ($align eq 'right') {
913: $pre=' \hfill \llap{';
914: }
915: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
916: if (not defined $TeXsize) {$TeXsize="large";}
917: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
918: }
919: return $currentstring;
920: }
921:
922: sub end_h6 {
923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
924: my $currentstring = '';
925: if ($target eq 'web' || $target eq 'webgrade') {
926: $currentstring .= $token->[2];
927: } elsif ($target eq 'tex') {
928: my $post='\vskip 0 mm ';
929: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
930: if ($align eq 'center') {
931: $post='\end{center}';
932: } elsif ($align eq 'left') {
933: $post='} \hfill'.'\vskip 0 mm ';
934: } elsif ($align eq 'right') {
935: $post='}'.'\vskip 0 mm ';
936: }
937: $currentstring .= '}}'.$post;
938: }
939: return $currentstring;
940: }
941:
942: #--- <cite> tag (end tag required)
943: sub start_cite {
944: my ($target,$token) = @_;
945: my $currentstring = '';
946: if ($target eq 'web' || $target eq 'webgrade') {
947: $currentstring .= $token->[4];
948: } elsif ($target eq 'tex') {
949: $currentstring .= '\textit{';
950: }
951: return $currentstring;
952: }
953:
954: sub end_cite {
955: my ($target,$token) = @_;
956: my $currentstring = '';
957: if ($target eq 'web' || $target eq 'webgrade') {
958: $currentstring .= $token->[2];
959: } elsif ($target eq 'tex') {
960: $currentstring .= '}';
961: }
962: return $currentstring;
963: }
964:
965: #-- <i> tag (end tag required)
966: sub start_i {
967: my ($target,$token) = @_;
968: my $currentstring = '';
969: if ($target eq 'web' || $target eq 'webgrade') {
970: $currentstring .= $token->[4];
971: } elsif ($target eq 'tex') {
972: $currentstring .= '\textit{';
973: }
974: return $currentstring;
975: }
976:
977: sub end_i {
978: my ($target,$token) = @_;
979: my $currentstring = '';
980: if ($target eq 'web' || $target eq 'webgrade') {
981: $currentstring .= $token->[2];
982: } elsif ($target eq 'tex') {
983: $currentstring .= '}';
984: }
985: return $currentstring;
986: }
987:
988: #-- <address> tag (end tag required)
989: sub start_address {
990: my ($target,$token) = @_;
991: my $currentstring = '';
992: if ($target eq 'web' || $target eq 'webgrade') {
993: $currentstring .= $token->[4];
994: } elsif ($target eq 'tex') {
995: $currentstring .= '\textit{';
996: }
997: return $currentstring;
998: }
999:
1000: sub end_address {
1001: my ($target,$token) = @_;
1002: my $currentstring = '';
1003: if ($target eq 'web' || $target eq 'webgrade') {
1004: $currentstring .= $token->[2];
1005: } elsif ($target eq 'tex') {
1006: $currentstring .= '}';
1007: }
1008: return $currentstring;
1009: }
1010:
1011: #-- <dfn> tag (end tag required)
1012: sub start_dfn {
1013: my ($target,$token) = @_;
1014: my $currentstring = '';
1015: if ($target eq 'web' || $target eq 'webgrade') {
1016: $currentstring .= $token->[4];
1017: } elsif ($target eq 'tex') {
1018: $currentstring .= '\textit{';
1019: }
1020: return $currentstring;
1021: }
1022:
1023: sub end_dfn {
1024: my ($target,$token) = @_;
1025: my $currentstring = '';
1026: if ($target eq 'web' || $target eq 'webgrade') {
1027: $currentstring .= $token->[2];
1028: } elsif ($target eq 'tex') {
1029: $currentstring .= '}';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: #-- <tt> tag (end tag required)
1035: sub start_tt {
1036: my ($target,$token) = @_;
1037: my $currentstring = '';
1038: if ($target eq 'web' || $target eq 'webgrade') {
1039: $currentstring .= $token->[4];
1040: } elsif ($target eq 'tex') {
1041: $currentstring .= '\texttt{';
1042: }
1043: return $currentstring;
1044: }
1045:
1046: sub end_tt {
1047: my ($target,$token) = @_;
1048: my $currentstring = '';
1049: if ($target eq 'web' || $target eq 'webgrade') {
1050: $currentstring .= $token->[2];
1051: } elsif ($target eq 'tex') {
1052: $currentstring .= '}';
1053: }
1054: return $currentstring;
1055: }
1056:
1057: #-- <kbd> tag (end tag required)
1058: sub start_kbd {
1059: my ($target,$token) = @_;
1060: my $currentstring = '';
1061: if ($target eq 'web' || $target eq 'webgrade') {
1062: $currentstring .= $token->[4];
1063: } elsif ($target eq 'tex') {
1064: $currentstring .= '\texttt{';
1065: }
1066: return $currentstring;
1067: }
1068:
1069: sub end_kbd {
1070: my ($target,$token) = @_;
1071: my $currentstring = '';
1072: if ($target eq 'web' || $target eq 'webgrade') {
1073: $currentstring .= $token->[2];
1074: } elsif ($target eq 'tex') {
1075: $currentstring .= '}';
1076: }
1077: return $currentstring;
1078: }
1079:
1080: #-- <code> tag (end tag required)
1081: sub start_code {
1082: my ($target,$token) = @_;
1083: my $currentstring = '';
1084: if ($target eq 'web' || $target eq 'webgrade') {
1085: $currentstring .= $token->[4];
1086: } elsif ($target eq 'tex') {
1087: $currentstring .= '\texttt{';
1088: }
1089: return $currentstring;
1090: }
1091:
1092: sub end_code {
1093: my ($target,$token) = @_;
1094: my $currentstring = '';
1095: if ($target eq 'web' || $target eq 'webgrade') {
1096: $currentstring .= $token->[2];
1097: } elsif ($target eq 'tex') {
1098: $currentstring .= '}';
1099: }
1100: return $currentstring;
1101: }
1102:
1103: #-- <em> tag (end tag required)
1104: sub start_em {
1105: my ($target,$token) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web' || $target eq 'webgrade') {
1108: $currentstring .= $token->[4];
1109: } elsif ($target eq 'tex') {
1110: $currentstring .= '\emph{';
1111: }
1112: return $currentstring;
1113: }
1114:
1115: sub end_em {
1116: my ($target,$token) = @_;
1117: my $currentstring = '';
1118: if ($target eq 'web' || $target eq 'webgrade') {
1119: $currentstring .= $token->[2];
1120: } elsif ($target eq 'tex') {
1121: $currentstring .= '}';
1122: }
1123: return $currentstring;
1124: }
1125:
1126: #-- <q> tag (end tag required)
1127: sub start_q {
1128: my ($target,$token) = @_;
1129: my $currentstring = '';
1130: if ($target eq 'web' || $target eq 'webgrade') {
1131: $currentstring .= $token->[4];
1132: } elsif ($target eq 'tex') {
1133: $currentstring .= '\emph{';
1134: }
1135: return $currentstring;
1136: }
1137:
1138: sub end_q {
1139: my ($target,$token) = @_;
1140: my $currentstring = '';
1141: if ($target eq 'web' || $target eq 'webgrade') {
1142: $currentstring .= $token->[2];
1143: } elsif ($target eq 'tex') {
1144: $currentstring .= '}';
1145: }
1146: return $currentstring;
1147: }
1148:
1149: # <p> is a bit strange since it does not require a closing </p>
1150: # However in latex, we must often output closing stuff to end
1151: # environments and {}'s etc. Therefore we do all the work
1152: # of figuring out the ending strings in the start tag processing,
1153: # and provide a mechanism to output the stop text external
1154: # to tag processing.
1155: #
1156: {
1157:
1158: my $closing_string = ''; # String required to close <p>
1159:
1160: # Some tags are <p> fragile meaning that <p> inside of them
1161: # does not work within TeX mode. This is managed via the
1162: # counter below:
1163: #
1164:
1165: my $para_disabled = 0;
1166:
1167: sub disable_para {
1168: $para_disabled++;
1169: }
1170: sub enable_para {
1171: $para_disabled--;
1172: }
1173:
1174:
1175: #-- <p> tag (end tag optional)
1176: #optional attribute - align="center|left|right"
1177: sub start_p {
1178: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web' || $target eq 'webgrade') {
1181: $currentstring .= &end_p(); # close off prior para if in progress.
1182: $currentstring .= $token->[4];
1183: if (! ($currentstring =~ /\//)) {
1184: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1185: }
1186: } elsif ($target eq 'tex' && !$para_disabled) {
1187:
1188: $currentstring .= &end_p(); # close off prior para if in progress.
1189: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1190: if ($align eq 'center') {
1191: $currentstring .='\begin{center}\par ';
1192: $closing_string = '\end{center}';
1193: if (&is_inside_of($tagstack, "table")) {
1194: $currentstring = ¢er_correction().$currentstring;
1195: }
1196: } elsif ($align eq 'right') {
1197: $currentstring.="\n".'{\flushright ';
1198: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1199: $closing_string= "}\n";
1200: } elsif ($align eq 'left') {
1201: $currentstring.= "\n".'{\flushleft ';
1202: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1203: $closing_string = "}\n";
1204: } else {
1205: $currentstring.='\par ';
1206: if (&is_inside_of($tagstack, 'table')) {
1207: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1208: } else {
1209: $closing_string = '\strut\\\\\strut ';
1210: }
1211: }
1212:
1213: }
1214: return $currentstring;
1215: }
1216: #
1217: # End paragraph processing just requires that we output the
1218: # closing string that was saved and blank it.
1219: sub end_p {
1220: # Note only 'tex' mode uses disable_para and enable_para
1221: # so we don't need to know the target in the check below:
1222:
1223: if (!$para_disabled) {
1224: my $current_string = $closing_string;
1225: $closing_string = ''; # Not in a para anymore.
1226: return $current_string;
1227: } else {
1228: return '';
1229: }
1230:
1231: }
1232: }
1233: #-- <br> tag (end tag forbidden)
1234: sub start_br {
1235: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1236: my $currentstring = '';
1237: if ($target eq 'web' || $target eq 'webgrade') {
1238: $currentstring .= $token->[4];
1239: } elsif ($target eq 'tex') {
1240: my @tempo=@$tagstack;
1241: my $signal=0;
1242: # Not going to factor this to is_inside_of since that would require
1243: # multiple stack traversals.
1244: #
1245: for (my $i=$#tempo;$i>=0;$i--) {
1246: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1247: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1248: $signal=1;
1249: }
1250: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1251: $signal = 1;
1252: }
1253: }
1254: if ($signal != 1) {
1255: $currentstring .= '\strut \\\\ \strut ';
1256: }
1257:
1258: }
1259: return $currentstring;
1260: }
1261:
1262: sub end_br {
1263: my ($target,$token) = @_;
1264: my $currentstring = '';
1265: if ($target eq 'web' || $target eq 'webgrade') {
1266: $currentstring .= $token->[2];
1267: }
1268: return $currentstring;
1269: }
1270:
1271: #-- <big> tag (end tag required)
1272: sub start_big {
1273: my ($target,$token) = @_;
1274: my $currentstring = '';
1275: if ($target eq 'web' || $target eq 'webgrade') {
1276: $currentstring .= $token->[4];
1277: } elsif ($target eq 'tex') {
1278: $currentstring .= '{\large ';
1279: }
1280: return $currentstring;
1281: }
1282:
1283: sub end_big {
1284: my ($target,$token) = @_;
1285: my $currentstring = '';
1286: if ($target eq 'web' || $target eq 'webgrade') {
1287: $currentstring .= $token->[2];
1288: } elsif ($target eq 'tex') {
1289: $currentstring .= '}';
1290: }
1291: return $currentstring;
1292: }
1293:
1294: #-- <small> tag (end tag required)
1295: sub start_small {
1296: my ($target,$token) = @_;
1297: my $currentstring = '';
1298: if ($target eq 'web' || $target eq 'webgrade') {
1299: $currentstring .= $token->[4];
1300: } elsif ($target eq 'tex') {
1301: $currentstring .= '{\footnotesize ';
1302: }
1303: return $currentstring;
1304: }
1305:
1306: sub end_small {
1307: my ($target,$token) = @_;
1308: my $currentstring = '';
1309: if ($target eq 'web' || $target eq 'webgrade') {
1310: $currentstring .= $token->[2];
1311: } elsif ($target eq 'tex') {
1312: $currentstring .= '}';
1313: }
1314: return $currentstring;
1315: }
1316:
1317: #-- <basefont> tag (end tag forbidden)
1318: sub start_basefont {
1319: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1320: my $currentstring = '';
1321: if ($target eq 'web' || $target eq 'webgrade') {
1322: $currentstring = $token->[4];
1323: } elsif ($target eq 'tex') {
1324: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1325: if (defined $basesize) {
1326: $currentstring = '{\\'.$basesize.' ';
1327: }
1328: }
1329: return $currentstring;
1330: }
1331:
1332: sub end_basefont {
1333: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1334: my $currentstring = '';
1335: if ($target eq 'web' || $target eq 'webgrade') {
1336: $currentstring = $token->[4];
1337: } elsif ($target eq 'tex') {
1338: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1339: if (defined $basesize) {
1340: $currentstring = '}';
1341: }
1342: }
1343: return $currentstring;
1344: }
1345:
1346: #-- <font> tag (end tag required)
1347: sub start_font {
1348: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1349: my $currentstring = '';
1350: if ($target eq 'web' || $target eq 'webgrade') {
1351: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1352: if ($face!~/symbol/i) {
1353: if (($env{'browser.fontenhance'} eq 'on') ||
1354: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1355: }
1356: $currentstring = $token->[4];
1357: } elsif ($target eq 'tex') {
1358: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1359: if (defined $fontsize) {
1360: $currentstring = '{\\'.$fontsize.' ';
1361: }
1362: }
1363: return $currentstring;
1364: }
1365:
1366: sub end_font {
1367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1368: my $currentstring = '';
1369: if ($target eq 'web' || $target eq 'webgrade') {
1370: $currentstring = $token->[2];
1371: } elsif ($target eq 'tex') {
1372: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1373: if (defined $fontsize) {
1374: $currentstring = '}';
1375: }
1376: }
1377: return $currentstring;
1378: }
1379:
1380: #-- <strike> tag (end tag required)
1381: sub start_strike {
1382: my ($target,$token) = @_;
1383: my $currentstring = '';
1384: if ($target eq 'web' || $target eq 'webgrade') {
1385: $currentstring .= $token->[4];
1386: } elsif ($target eq 'tex') {
1387: &Apache::lonxml::startredirection();
1388: }
1389: return $currentstring;
1390: }
1391:
1392: sub end_strike {
1393: my ($target,$token) = @_;
1394: my $currentstring = '';
1395: if ($target eq 'web' || $target eq 'webgrade') {
1396: $currentstring .= $token->[2];
1397: } elsif ($target eq 'tex') {
1398: $currentstring=&Apache::lonxml::endredirection();
1399: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1400: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1401: $currentstring=~s/(\S)\s*$/$1\}/;
1402: }
1403: return $currentstring;
1404: }
1405:
1406: #-- <s> tag (end tag required)
1407: sub start_s {
1408: my ($target,$token) = @_;
1409: my $currentstring = '';
1410: if ($target eq 'web' || $target eq 'webgrade') {
1411: $currentstring .= $token->[4];
1412: } elsif ($target eq 'tex') {
1413: &Apache::lonxml::startredirection();
1414: }
1415: return $currentstring;
1416: }
1417:
1418: sub end_s {
1419: my ($target,$token) = @_;
1420: my $currentstring = '';
1421: if ($target eq 'web' || $target eq 'webgrade') {
1422: $currentstring .= $token->[2];
1423: } elsif ($target eq 'tex') {
1424: $currentstring=&Apache::lonxml::endredirection();
1425: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1426: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1427: $currentstring=~s/(\S)\s*$/$1\}/;
1428: }
1429: return $currentstring;
1430: }
1431:
1432: #-- <sub> tag (end tag required)
1433: sub start_sub {
1434: my ($target,$token) = @_;
1435: my $currentstring = '';
1436: if ($target eq 'web' || $target eq 'webgrade') {
1437: $currentstring .= $token->[4];
1438: } elsif ($target eq 'tex') {
1439: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1440: }
1441: return $currentstring;
1442: }
1443:
1444: sub end_sub {
1445: my ($target,$token) = @_;
1446: my $currentstring = '';
1447: if ($target eq 'web' || $target eq 'webgrade') {
1448: $currentstring .= $token->[2];
1449: } elsif ($target eq 'tex') {
1450: $currentstring .= '}}';
1451: }
1452: return $currentstring;
1453: }
1454:
1455: #-- <sup> tag (end tag required)
1456: sub start_sup {
1457: my ($target,$token) = @_;
1458: my $currentstring = '';
1459: if ($target eq 'web' || $target eq 'webgrade') {
1460: $currentstring .= $token->[4];
1461: } elsif ($target eq 'tex') {
1462: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1463: }
1464: return $currentstring;
1465: }
1466:
1467: sub end_sup {
1468: my ($target,$token) = @_;
1469: my $currentstring = '';
1470: if ($target eq 'web' || $target eq 'webgrade') {
1471: $currentstring .= $token->[2];
1472: } elsif ($target eq 'tex') {
1473: $currentstring .= '}}';
1474: }
1475: return $currentstring;
1476: }
1477:
1478: #-- <hr> tag (end tag forbidden)
1479: sub start_hr {
1480: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1481: my $currentstring = &end_p(); # End enclosing para.
1482: if ($target eq 'web' || $target eq 'webgrade') {
1483: $currentstring .= $token->[4];
1484: } elsif ($target eq 'tex') {
1485:
1486: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1487: #
1488: my $restart_sub = 0;
1489: my $restart_sup = 0;
1490:
1491: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1492: # using the start_ stop_ functions.. those tags only care about
1493: # $target.
1494:
1495: if (&is_inside_of($tagstack, "sub")) {
1496: $restart_sub = 1;
1497: $currentstring .= &end_sub($target, $token, $tagstack,
1498: $parstack, $parser, $safeeval);
1499: }
1500: if (&is_inside_of($tagstack, "sup")) {
1501: $restart_sup = 1;
1502: $currentstring .= &end_sup($target, $token, $tagstack,
1503: $parstack, $parser, $safeeval);
1504: }
1505:
1506: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1507: if (defined $LaTeXwidth) {
1508: if ($LaTeXwidth=~/^%/) {
1509: substr($LaTeXwidth,0,1)='';
1510: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1511: }
1512: } else {
1513: $LaTeXwidth ='0.9\textwidth';
1514: }
1515: my ($pre,$post);
1516: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1517: if (($align eq 'center') || (not defined $align)) {
1518: $pre=''; $post='';
1519: } elsif ($align eq 'left') {
1520: $pre='\rlap{'; $post='} \hfill';
1521: } elsif ($align eq 'right') {
1522: $pre=' \hfill \llap{'; $post='}';
1523: }
1524: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1525: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1526: # Turn stuff back on that we can't be inside of.
1527:
1528: if ($restart_sub) {
1529: $currentstring .= &start_sub($target, $token, $tagstack,
1530: $parstack, $parser, $safeeval);
1531: }
1532: if ($restart_sup) {
1533: $currentstring .= &start_sup($target, $token, $tagstack,
1534: $parstack, $parser, $safeeval);
1535: }
1536: }
1537: return $currentstring;
1538: }
1539:
1540: sub end_hr {
1541: my ($target,$token) = @_;
1542: my $currentstring = '';
1543: if ($target eq 'web' || $target eq 'webgrade') {
1544: $currentstring .= $token->[2];
1545: }
1546: return $currentstring;
1547: }
1548:
1549: #-- <div> tag (end tag required)
1550: {
1551:
1552: # Since div can be nested, the stack below is used
1553: # in 'tex' mode to store the ending strings
1554: # for the div stack.
1555:
1556: my @div_end_stack;
1557:
1558: sub start_div {
1559: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1560: my $currentstring = &end_p(); # Close enclosing para.
1561: if ($target eq 'web' || $target eq 'webgrade') {
1562: $currentstring .= $token->[4];
1563: }
1564: if ($target eq 'tex') {
1565: # 4 possible alignments: left, right, center, and -missing-.
1566: # If inside a table row, we must let the table logic
1567: # do the alignment, however.
1568: #
1569:
1570: my $endstring = '';
1571:
1572: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1573: $safeeval, undef, 1));
1574: if ($align eq 'center') {
1575: $currentstring .= '\begin{center}';
1576: $endstring = '\end{center}';
1577: if (&is_inside_of($tagstack, "table")) {
1578: $currentstring = ¢er_correction().$currentstring;
1579: $endstring .= ¢er_end_correction();
1580: }
1581: }
1582: elsif ($align eq 'right') {
1583: $currentstring .= '\begin{flushright}';
1584: $endstring .= '\end{flushright}';
1585: } elsif ($align eq 'left') {
1586: $currentstring .= '\begin{flushleft}';
1587: $endstring = '\end{flushleft}';
1588: } else {
1589:
1590: }
1591: $currentstring .= "\n"; # For human readability.
1592: $endstring = "\n$endstring\n"; # For human readability
1593: push(@div_end_stack, $endstring);
1594: }
1595: return $currentstring;
1596: }
1597:
1598: sub end_div {
1599: my ($target,$token) = @_;
1600: my $currentstring = '';
1601: if ($target eq 'web' || $target eq 'webgrade') {
1602: $currentstring .= $token->[2];
1603: }
1604: if ($target eq 'tex') {
1605: my $endstring = pop @div_end_stack;
1606: $currentstring .= $endstring;
1607: }
1608: return $currentstring;
1609: }
1610: }
1611:
1612: #-- <a> tag (end tag required)
1613: sub start_a {
1614: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1615: my $currentstring = '';
1616: if ($target eq 'web' || $target eq 'webgrade') {
1617: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1618: undef,1);
1619: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1620: if ($href =~ /\S/) {
1621: if ($href !~ m{^https?://}) {
1622: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1623: my $linkurl;
1624: if ($href =~ m{^/uploaded/}) {
1625: $linkurl = $href;
1626: } elsif ($href =~ m{^[^/]}) {
1627: my $path = $url;
1628: $path =~ s{[^/]*$}{};
1629: $linkurl = $path.$href;
1630: }
1631: if ($linkurl =~ m{^/uploaded/}) {
1632: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1633: if (&Apache::lonnet::is_on_map($url)) {
1634: &Apache::lonxml::extlink($linkurl);
1635: }
1636: }
1637: }
1638: }
1639: }
1640: }
1641: return $currentstring;
1642: }
1643:
1644: sub end_a {
1645: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1646: my $currentstring = '';
1647: if ($target eq 'web' || $target eq 'webgrade') {
1648: $currentstring .= $token->[2];
1649: }
1650: if ($target eq 'tex') {
1651: my $href =
1652: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1653: my $name =
1654: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1655: my $uriprint =
1656: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1657: my $anchorprint =
1658: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1659: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1660: $href =~ s/([^\\])%/$1\\\%/g;
1661: # Substitute special symbols... and allow line breaks at each /
1662: #
1663: $href = &Apache::lonxml::latex_special_symbols($href);
1664: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1665: $currentstring .= ' ({\tt URI:'.$href.'})';
1666: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1667: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1668: } else {
1669: $currentstring.='';
1670: }
1671: }
1672: return $currentstring;
1673: }
1674:
1675: #-- <li> tag (end tag optional)
1676: sub start_li {
1677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1678: my $currentstring = '';
1679: if ($target eq 'web' || $target eq 'webgrade') {
1680: $currentstring = $token->[4];
1681: } elsif ($target eq 'tex') {
1682: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1683: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1684: #FIXME need to support types i and I
1685: if ($type=~/disc/) {
1686: $currentstring .= ' \item[$\bullet$] ';
1687: } elsif ($type=~/circle/) {
1688: $currentstring .= ' \item[$\circ$] ';
1689: } elsif ($type=~/square/) {
1690: $currentstring .= ' \item[$\diamond$] ';
1691: } elsif ($type eq '1') {
1692: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1693: } elsif ($type eq 'A') {
1694: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1695: } elsif ($type eq 'a') {
1696: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1697: } elsif ($value ne '') {
1698: $currentstring .= ' \item['.$value.'] ';
1699: } else {
1700: $currentstring .= ' \item ';
1701: }
1702: $Apache::londefdef::list_index++;
1703: }
1704: return $currentstring;
1705: }
1706:
1707: sub end_li {
1708: my ($target,$token) = @_;
1709: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1710: if ($target eq 'web' || $target eq 'webgrade') {
1711: $currentstring .= $token->[2];
1712: }
1713: return $currentstring;
1714: }
1715:
1716: #-- <u> tag (end tag required)
1717: sub start_u {
1718: my ($target,$token) = @_;
1719: my $currentstring = '';
1720: if ($target eq 'web' || $target eq 'webgrade') {
1721: $currentstring .= $token->[4];
1722: } elsif ($target eq 'tex') {
1723: &Apache::lonxml::startredirection();
1724: }
1725: return $currentstring;
1726: }
1727:
1728: sub end_u {
1729: my ($target,$token) = @_;
1730: my $currentstring = '';
1731: if ($target eq 'web' || $target eq 'webgrade') {
1732: $currentstring .= $token->[2];
1733: } elsif ($target eq 'tex') {
1734: $currentstring=&Apache::lonxml::endredirection();
1735: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1736: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1737: $currentstring=~s/(\S)\s*$/$1\}/;
1738: }
1739: return $currentstring;
1740: }
1741:
1742: #-- <ul> tag (end tag required)
1743: sub start_ul {
1744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1745: my $currentstring = &end_p(); # Close off enclosing list.
1746: if ($target eq 'web' || $target eq 'webgrade') {
1747: $currentstring .= $token->[4];
1748: } elsif ($target eq 'tex') {
1749: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1750: $Apache::londefdef::list_index=0;
1751: if ($TeXtype eq 'disc') {
1752: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1753: '\renewcommand{\labelitemii}{$\bullet$}'.
1754: '\renewcommand{\labelitemiii}{$\bullet$}'.
1755: '\renewcommand{\labelitemiv}{$\bullet$}';
1756: } elsif ($TeXtype eq 'circle') {
1757: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1758: '\renewcommand{\labelitemii}{$\circ$}'.
1759: '\renewcommand{\labelitemiii}{$\circ$}'.
1760: '\renewcommand{\labelitemiv}{$\circ$}';
1761: } elsif ($TeXtype eq 'square') {
1762: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1763: '\renewcommand{\labelitemii}{$\diamond$}'.
1764: '\renewcommand{\labelitemiii}{$\diamond$}'.
1765: '\renewcommand{\labelitemiv}{$\diamond$}';
1766: }
1767: $currentstring .= '\strut \begin{itemize}';
1768: }
1769: return $currentstring;
1770: }
1771:
1772: sub end_ul {
1773: my ($target,$token) = @_;
1774: my $currentstring = '';
1775: if ($target eq 'web' || $target eq 'webgrade') {
1776: $currentstring = $token->[2];
1777: } elsif ($target eq 'tex') {
1778: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1779: '\renewcommand{\labelitemii}{$\bullet$}'.
1780: '\renewcommand{\labelitemiii}{$\bullet$}'.
1781: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1782: }
1783: return $currentstring;
1784: }
1785:
1786: #-- <menu> tag (end tag required)
1787: sub start_menu {
1788: my ($target,$token) = @_;
1789: my $currentstring = '';
1790: if ($target eq 'web' || $target eq 'webgrade') {
1791: $currentstring = $token->[4];
1792: } elsif ($target eq 'tex') {
1793: $currentstring = " \\begin{itemize} ";
1794: }
1795: return $currentstring;
1796: }
1797:
1798: sub end_menu {
1799: my ($target,$token) = @_;
1800: my $currentstring = '';
1801: if ($target eq 'web' || $target eq 'webgrade') {
1802: $currentstring = $token->[2];
1803: } elsif ($target eq 'tex') {
1804: $currentstring = " \\end{itemize}";
1805: }
1806: return $currentstring;
1807: }
1808:
1809: #-- <dir> tag (end tag required)
1810: sub start_dir {
1811: my ($target,$token) = @_;
1812: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1813: if ($target eq 'web' || $target eq 'webgrade') {
1814: $currentstring .= $token->[4];
1815: } elsif ($target eq 'tex') {
1816: $currentstring .= " \\begin{itemize} ";
1817: }
1818: return $currentstring;
1819: }
1820:
1821: sub end_dir {
1822: my ($target,$token) = @_;
1823: my $currentstring = '';
1824: if ($target eq 'web' || $target eq 'webgrade') {
1825: $currentstring = $token->[2];
1826: } elsif ($target eq 'tex') {
1827: $currentstring = " \\end{itemize}";
1828: }
1829: return $currentstring;
1830: }
1831:
1832: #-- <ol> tag (end tag required)
1833: sub start_ol {
1834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1835: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1836: if ($target eq 'web' || $target eq 'webgrade') {
1837: $currentstring .= $token->[4];
1838: } elsif ($target eq 'tex') {
1839: $Apache::londefdef::list_index=0;
1840: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1841: if ($type eq '1') {
1842: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1843: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1844: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1845: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1846: } elsif ($type eq 'A') {
1847: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1848: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1849: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1850: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1851: } elsif ($type eq 'a') {
1852: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1853: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1854: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1855: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1856: } elsif ($type eq 'i') {
1857: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1858: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1859: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1860: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1861: } elsif ($type eq 'I') {
1862: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1863: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1864: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1865: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1866: }
1867: $currentstring .= '\strut \begin{enumerate}';
1868: }
1869: return $currentstring;
1870: }
1871:
1872: sub end_ol {
1873: my ($target,$token) = @_;
1874: my $currentstring = '';
1875: if ($target eq 'web' || $target eq 'webgrade') {
1876: $currentstring = $token->[2];
1877: } elsif ($target eq 'tex') {
1878: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1879: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1880: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1881: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1882: }
1883: return $currentstring;
1884: }
1885:
1886: #-- <dl> tag (end tag required)
1887: sub start_dl {
1888: my ($target,$token) = @_;
1889: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1890: if ($target eq 'web' || $target eq 'webgrade') {
1891: $currentstring .= $token->[4];
1892: } elsif ($target eq 'tex') {
1893: $currentstring .= '\begin{description}';
1894: $Apache::londefdef::DL++;
1895: push(@Apache::londefdef::description,[]);
1896: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1897: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1898: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1899: }
1900: return $currentstring;
1901: }
1902:
1903: sub end_dl {
1904: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1905: my $currentstring = '';
1906: if ($target eq 'web' || $target eq 'webgrade') {
1907: $currentstring = $token->[2];
1908: } elsif ($target eq 'tex') {
1909: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1910: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1911: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1912: $currentstring.=' '.$element.' ';
1913: }
1914: pop(@Apache::londefdef::description);
1915: $currentstring.='\end{description}';
1916: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1917: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1918: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1919: $Apache::londefdef::DL--;
1920: }
1921: return $currentstring;
1922: }
1923:
1924: #-- <dt> tag (end tag optional)
1925: sub start_dt {
1926: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1927: my $currentstring='';
1928: if ($target eq 'web' || $target eq 'webgrade') {
1929: $currentstring = $token->[4];
1930: } elsif ($target eq 'tex') {
1931: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1932: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1933: &Apache::lonxml::startredirection();
1934: $Apache::londefdef::DT[-1]++;
1935: $Apache::londefdef::seenDT[-1]=1;
1936: }
1937: return $currentstring;
1938: }
1939:
1940: sub end_dt {
1941: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1942: my $currentstring = '';
1943: if ($target eq 'web' || $target eq 'webgrade') {
1944: $currentstring = $token->[2];
1945: } elsif ($target eq 'tex') {
1946: if ($Apache::londefdef::DT[-1]) {
1947: my $data=&item_cleanup();
1948: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1949: $Apache::londefdef::DT[-1]--;
1950: }
1951: }
1952: return $currentstring;
1953: }
1954:
1955: sub item_cleanup {
1956: my $item=&Apache::lonxml::endredirection();
1957: $item=~s/\\begin{center}//g;
1958: $item=~s/\\end{center}//g;
1959: return $item;
1960: }
1961:
1962: #-- <dd> tag (end tag optional)
1963: sub start_dd {
1964: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1965: my $currentstring = '';
1966: if ($target eq 'web' || $target eq 'webgrade') {
1967: $currentstring = $token->[4];
1968: } elsif ($target eq 'tex') {
1969: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1970: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1971: if (!$Apache::londefdef::seenDT[-1]) {
1972: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1973: }
1974: push(@{$Apache::londefdef::description[-1]},'');
1975: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1976: $Apache::londefdef::DD[-1]++;
1977: &Apache::lonxml::startredirection();
1978: }
1979: return $currentstring;
1980: }
1981:
1982: sub end_dd {
1983: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1984: my $currentstring = '';
1985: if ($target eq 'web' || $target eq 'webgrade') {
1986: $currentstring = $token->[2];
1987: } elsif ($target eq 'tex') {
1988: $Apache::londefdef::description[-1]->[-1].=
1989: &Apache::lonxml::endredirection().' \vskip 0mm ';
1990: $Apache::londefdef::DD[-1]--;
1991: }
1992: return $currentstring;
1993: }
1994:
1995: #-- <table> tag (end tag required)
1996: # <table> also ends any prior <p> that is not closed.
1997: # but, unless I allow <p>'s to nest, that's the
1998: # only way I could think of to allow <p> in
1999: # <tr> <th> bodies
2000: #
2001: #list of supported attributes: border,width,TeXwidth,TeXtheme
2002: # align
2003: sub start_table {
2004: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2005: my $textwidth = '';
2006: my $currentstring = &end_p();
2007: if ($target eq 'web' || $target eq 'webgrade') {
2008: $currentstring .= $token->[4];
2009: } elsif ($target eq 'tex') {
2010: &disable_para(); # Can't have paras in a table.
2011:
2012:
2013: # New table code:
2014:
2015: # Get the parameters that we can do something about:
2016:
2017: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2018: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2019: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2020: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2021: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2022:
2023: # The only thing that needs any figuring out is the width.. and then only if it is
2024: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2025: #
2026:
2027: my $table = new Apache::lontable();
2028: if ((defined $border) && ($border > 0)) {
2029: # &Apache::lonnet::logthis("Turning on table borders: $border");
2030: $table->table_border(1);
2031: if ($cell_border ne 'none') {
2032: $table->cell_border(1); # html specs that border turns on both...unless rules='none'.
2033: }
2034: }
2035: # Only all or nothing for cell borders for now:
2036:
2037: if ((defined $cell_border) && ($cell_border ne 'none')) {
2038: # &Apache::lonnet::logthis("Turning on cell borders: $cell_border");
2039: $table->cell_border(1);
2040: }
2041: if (defined $theme) {
2042: $table->theme($theme);
2043: }
2044: if (defined $align) {
2045: $table->alignment($align);
2046: }
2047:
2048: # Missing width is most of page width
2049:
2050: if (!(defined $width)) {
2051: $width = '70%';
2052: }
2053:
2054: # If a percentage, need to calculate what this means in terms of
2055: # page width:
2056:
2057: if ($width =~ /%$/) {
2058: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2059: $width =~ s/%//;
2060: $width = $width * $textwidth / 100.0;
2061: $width .= " mm";
2062: $table->width($width);
2063: }
2064:
2065: push(@Apache::londefdef::table, $table);
2066: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2067:
2068: #--------------------------------------------------------
2069: # Old table code here.
2070: #--------------------------------------------------------
2071:
2072:
2073: if (0) {
2074: push(@Apache::londefdef::table, {});
2075: $Apache::londefdef::table[-1]{'row_number'} = -1;
2076: #maximum table's width (default coincides with text line length)
2077: if ($#Apache::londefdef::table==0) {
2078: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2079: $textwidth=~/(\d+\.?\d*)/;
2080: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2081: } else {
2082: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2083: #the maximum width of nested table is determined by LATeX width of parent cell
2084: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2085: } else {
2086: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2087: $textwidth=$Apache::londefdef::table[-2]{'width'};
2088: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2089: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2090: }
2091: }
2092: }
2093:
2094: # width either comes forced from the TeXwidth or the width parameters.
2095: # in either case it can be a percentage or absolute width.
2096: # in the width case we ignore absolute width
2097: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2098: if (!defined($TeXwidth)) {
2099: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2100: $safeeval,undef,1);
2101: if ($htmlwidth =~ /%/) {
2102: $TeXwidth = $htmlwidth;
2103: } else {
2104: $TeXwidth = $textwidth;
2105: }
2106: }
2107: # if the width is specified as a % it is converted to an absolute width.
2108: # otherwise.. just plugged right in the hash
2109:
2110: if ($TeXwidth=~/%/) {
2111: $TeXwidth=~/(\d+)/;
2112: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2113: } else {
2114: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2115: }
2116: # In the end, however the table width cannot be wider than $textwidth...
2117:
2118: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2119: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2120: }
2121: #table's border
2122: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2123: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2124: unless (defined $border) { $border = 0; }
2125: if ($border) {
2126: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2127: $Apache::londefdef::table[-1]{'vinc'} = '&';
2128: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2129: } else {
2130: $Apache::londefdef::table[-1]{'hinc'} = '';
2131: $Apache::londefdef::table[-1]{'vinc'} = '&';
2132: $Apache::londefdef::table[-1]{'vvinc'} = '';
2133: }
2134: if ($#Apache::londefdef::table==0) {
2135: # Note that \newline seems to destroy the alignment envs.
2136: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2137: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2138: }
2139: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2140: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2141: $Apache::londefdef::table[-1]{'objectlen'}=[];
2142: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2143: $Apache::londefdef::table[-1]{'maxlen'}=[];
2144: $Apache::londefdef::table[-1]{'minlen'}=[];
2145: $Apache::londefdef::table[-1]{'content'}=[];
2146: $Apache::londefdef::table[-1]{'align'}=[];
2147: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2148: }
2149:
2150: }
2151: return $currentstring;
2152: }
2153:
2154: sub end_table {
2155: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2156: my $currentstring = '';
2157: if ($target eq 'web' || $target eq 'webgrade') {
2158: $currentstring = $token->[2];
2159: } elsif ($target eq 'tex') {
2160:
2161:
2162: # New table code:
2163:
2164: my $table = pop(@Apache::londefdef::table);
2165: my $t = $table->generate();
2166: $currentstring = $t->generate_string();
2167: &enable_para();
2168: #--------------------------------------------------------------
2169: # Old table code:
2170: #--------------------------------------------------------------
2171:
2172: if (0) {
2173:
2174: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2175: my $inmemory = '';
2176: my $output = '';
2177: my $WARNING='';
2178: #width of columns from TeXwidth attributes
2179:
2180: # Protect against unbalanced </table> tag.
2181:
2182: if (scalar(@Apache::londefdef::table) > 0) {
2183:
2184: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2185: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2186: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2187: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2188: }
2189: }
2190: }
2191: #free space and number of empty columns
2192: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2193: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2194: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2195: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2196: $empty_columns++;
2197: } else {
2198: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2199: }
2200: }
2201:
2202: #boundaries for contents columns
2203: my @min_len=();#columns can not be narrower
2204: my @max_len=();#maximum length of column
2205: my $avg_max;
2206: my $avg_min;
2207: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2208: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2209: my ($localmin,$localmax)=(0,0);
2210: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2211: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2212: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2213: }
2214: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2215: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2216: }
2217: }
2218: push @min_len, $localmin;
2219: push @max_len, $localmax;
2220: $avg_max = $localmax + $avg_max;
2221: $avg_min = $localmin + $avg_min;
2222: }
2223: # Does not really matter what the average max/min are if there are no cols.
2224: # and this prevents div 0 in that case.
2225:
2226: if ($counter_cols != 0) {
2227: $avg_max = $avg_max/$counter_cols;
2228: $avg_min = $avg_min/$counter_cols;
2229: }
2230:
2231:
2232: # I don't think the below is needed.. but just in case:
2233:
2234: if ($avg_min > $avg_max) {
2235: my $temp = $avg_min;
2236: $avg_min = $avg_max;
2237: $avg_max = $temp;
2238: }
2239:
2240:
2241: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2242: my $localmin=0,;
2243: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2244: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2245: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2246: }
2247: }
2248: if ($max_len[$jn]<$localmin) {
2249: $max_len[$jn]=$localmin;
2250: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2251: }#object size is bigger
2252: if ($min_len[$jn]<$localmin) {
2253: $min_len[$jn]=$localmin;
2254: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2255: }#object size is bigger
2256: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2257: $min_len[$jn]=0;
2258: $max_len[$jn]=0;
2259: }
2260: # Spans seem to be really bothered by max/min = 0. So if we have one
2261: # make it an average joe max/min.
2262:
2263: if ($max_len[$jn] == 0) {
2264: $max_len[$jn] = $avg_max;
2265: }
2266: if ($min_len[$jn] == 0) {
2267: $min_len[$jn] = $avg_min;
2268: }
2269:
2270: }
2271: #final adjustment of column width
2272: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2273: my @adjust=();
2274: #step 1. adjustment by maximum value
2275: my $space_needed=0;
2276: for (my $jn=0;$jn<=$#max_len;$jn++) {
2277: $space_needed=$space_needed+$max_len[$jn];
2278: }
2279: if ($space_needed<=$available_space) {
2280:
2281: for (my $jn=0;$jn<=$#max_len;$jn++) {
2282: if ($fwidth[$jn]==0) {
2283: $fwidth[$jn]=$max_len[$jn];
2284: }
2285: }
2286: } else {
2287: #step 2. adjustment by minimum value (estimation)
2288: $space_needed=0;
2289: for (my $jn=0;$jn<=$#min_len;$jn++) {
2290: $space_needed+=$min_len[$jn];
2291: }
2292: if ($space_needed>$available_space) {
2293: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2294: for (my $jn=0;$jn<=$#max_len;$jn++) {
2295: if ($fwidth[$jn]==0) {
2296: $fwidth[$jn]=$min_len[$jn];
2297: }
2298: }
2299: #check if we have objects which can be scaled
2300: my $how_many_to_scale=0;
2301: my @to_scale=();
2302: for (my $jn=0;$jn<=$#max_len;$jn++) {
2303: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2304: $how_many_to_scale++;
2305: push @to_scale, $jn;
2306: }
2307: }
2308: if ($how_many_to_scale>0) {
2309: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2310: foreach my $jn (@to_scale) {
2311: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2312: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2313: if ($1 ne '') {
2314: my $current_length=&recalc($1);
2315: $current_length=~/(\d+\.?\d*)/;
2316: $current_length=$current_length-$space_to_adjust;
2317: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2318: }
2319: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2320: if ($1 ne '') {
2321: my $current_length=$1;
2322: $current_length=$current_length-$space_to_adjust;
2323: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2324: }
2325: }
2326: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2327: }
2328: }
2329: } else {
2330: #step 3. adjustment over minimal + corrections
2331: my $enlarge_coef=$available_space/$space_needed;
2332: my $acsessive=0;
2333: for (my $jn=0;$jn<=$#min_len;$jn++) {
2334: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2335: if ($adjust[$jn]>$max_len[$jn]) {
2336: $fwidth[$jn]=$max_len[$jn];
2337: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2338: $adjust[$jn]=0;
2339:
2340: }
2341: }
2342: if ($acsessive>0) {
2343: #we have an excess of space and can redistribute it
2344: my $notempty_columns=0;
2345: for (my $jn=0;$jn<=$#min_len;$jn++) {
2346: if ($adjust[$jn]!=0) {
2347: $notempty_columns++;
2348: }
2349: }
2350: my $per_column=$acsessive/$notempty_columns;
2351: for (my $jn=0;$jn<=$#min_len;$jn++) {
2352: if ($adjust[$jn]!=0) {
2353: $adjust[$jn]+=$per_column;
2354: $fwidth[$jn]=$adjust[$jn];
2355: }
2356: }
2357: } else {
2358: for (my $jn=0;$jn<=$#min_len;$jn++) {
2359: $fwidth[$jn]=$adjust[$jn];
2360: }
2361: }
2362: }
2363: }
2364: # use all available width or specified width as if not specified,
2365: # the specified width gets defaulted to the available width.
2366:
2367: my $current=0;
2368: for (my $i=0;$i<=$#fwidth;$i++) {
2369: $current+=$fwidth[$i];
2370: }
2371: if ($current == 0) {
2372: $current = $Apache::londefdef::table[-1]{'width'};
2373: }
2374: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2375: for (my $i=0;$i<=$#fwidth;$i++) {
2376: $fwidth[$i]*=$coef;
2377: }
2378: #removing of empty columns if allowed
2379: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2380: if ($permission eq 'yes') {
2381: my @cleaned_table=();
2382: my @cleaned_header=();
2383: my $colind=0;
2384: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2385: if ($fwidth[$jn]!=0) {
2386: #we need to copy column
2387: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2388: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2389: $cleaned_header[$colind]=$fwidth[$jn];
2390: }
2391: $colind++;
2392: }
2393: }
2394: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2395: @fwidth=@cleaned_header;
2396: }
2397:
2398:
2399: #construct header of the table
2400: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2401: for (my $in=0;$in<=$#fwidth;$in++) {
2402: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2403: }
2404: $header_of_table .= '}';
2405:
2406: #fill the table
2407: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2408: my $have_rowspan = 0;
2409: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2410:
2411: #-----------------------------------------------------------
2412: # I think this order of doing things will ensure that
2413: # single rowspan, columspan and combined row/colspans will
2414: # work correctly. LaTeX is delicate here.
2415: # RF.
2416:
2417: # Start a rowspan if necessary:
2418:
2419: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2420: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2421: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2422: #
2423: # Do the appropriate magic if this has a colspan
2424: #
2425:
2426: my $border_char = "";
2427: if ($border) {
2428: $border_char = "|";
2429: }
2430: my $spanwidth = 0;
2431: if ($colspan > 1) {
2432: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2433: $spanwidth += $fwidth[$spancol];
2434: }
2435: $output .= '\multicolumn{'.
2436: $colspan
2437: ."}";
2438: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2439: $output .= '{'.$border_char.'c'.$border_char.'}{';
2440: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2441: $output .= '{'.$border_char.'r'.$border_char.'}{';
2442: }
2443: else {
2444: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2445: }
2446:
2447: } else {
2448: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2449: }
2450:
2451: # Rowspan... if colspan is 1, and there's an alignment we'll need
2452: # to kick in a multicolumn in order to get the alignment spec.
2453: # this must precede the multirow or LaTex gets quite upset.
2454: # Naturally if colspan > 1 we've already done that above ^
2455: #
2456: my $multirow_aligned = 0;
2457: if ($rowspan > 1) {
2458: if ($colspan == 1) {
2459: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2460: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2461: $multirow_aligned = 1;
2462: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2463: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2464: $multirow_aligned = 1;
2465: }
2466: }
2467: $have_rowspan++;
2468: if ($multirow_aligned) {
2469: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2470: } else {
2471: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2472: }
2473:
2474: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2475: s{^\s*\\par\s*}{};
2476: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2477: s{\s*\\vskip\s*0pt\s*$}{};
2478:
2479: #
2480: # If we did not throw in a multicolumn to align, then add
2481: # an extra {
2482: # so we close correctly without having to keep additional state
2483: # around
2484: #
2485: if (!$multirow_aligned) {
2486: $output .= '{';
2487: }
2488: }
2489: if (($rowspan eq '^') || ($rowspan eq '_')) {
2490: $have_rowspan++;
2491: }
2492: #--------------------------------------------------------------
2493:
2494:
2495: # For right and center alignment of single cells.
2496: # we are going to use a multicolumn with a span of 1 to specify alignment.
2497: #
2498: if ($colspan == 1 && $rowspan == 1) {
2499: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2500: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2501: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2502: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2503: }
2504: }
2505:
2506: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2507:
2508: if (($colspan == 1 && $rowspan == 1) &&
2509: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2510: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2511: $output .= '}';
2512: }
2513:
2514: # Close off any open multirow:
2515:
2516: if ($rowspan > 1) {
2517: $output .= '}}';
2518: }
2519: # Close off the colspan...
2520: #
2521: if ($colspan > 1) {
2522: $output .= '}';
2523: $jn += $colspan-1; # Adjust for number of rows really left.
2524: }
2525: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2526: }
2527: # If have_rowspan > 0, and borders are on, then
2528: # we need to do more than put an \hline at the bottom of row.
2529: # we need to do the appropriate \cline to ensure that
2530: # the spanned rows don't have \hlines through them.
2531:
2532: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2533: $output .= ' \\\\ ';
2534: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2535: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2536: if ($rowspan ne "^") {
2537: if (($rowspan <= 1) || ($rowspan eq '_')) {
2538: my $column = $jn+1;
2539: $output .= '\cline{'.$column.'-'.$column.'} ';
2540: }
2541: }
2542: }
2543:
2544: } else {
2545: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2546: }
2547: }
2548: # Note that \newline destroys alignment env's produced by e.g. <div>
2549: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2550: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2551: if ($#Apache::londefdef::table > 0) {
2552: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2553: # Figure out max/and min width by summing us and then
2554: # apply that to the current column of the table we nest in
2555: # if it's larger than the current width or the current width
2556: # is undefined.
2557: #
2558: my $min_nested_width = 0;
2559: my $max_nested_width = 0;
2560: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2561: $min_nested_width += $min_len[$col];
2562: $max_nested_width += $max_len[$col];
2563:
2564: }
2565: # Fudge in an extra 5 mm for borders etc:
2566:
2567: $min_nested_width += 5;
2568: $max_nested_width += 5;
2569:
2570: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2571: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2572: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2573: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2574: }
2575: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2576: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2577: }
2578:
2579: pop @Apache::londefdef::table;
2580: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2581: } else {
2582: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2583: pop @Apache::londefdef::table;
2584: undef @Apache::londefdef::table;
2585: }
2586: }
2587: &enable_para();
2588: }
2589: }
2590: return $currentstring;
2591: }
2592:
2593: #-- <tr> tag (end tag optional)
2594: sub start_tr {
2595: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2596: my $currentstring = '';
2597: if ($target eq 'web' || $target eq 'webgrade') {
2598: $currentstring = $token->[4];
2599: } elsif ($target eq 'tex') {
2600:
2601: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2602: $Apache::londefdef::table[-1]->start_row();
2603:
2604: if ($align ne '') {
2605: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2606: }
2607:
2608: #---------------------------------------------------------------
2609: # Old table code.
2610: #---------------------------------------------------------------
2611:
2612: if (0) {
2613: $Apache::londefdef::table[-1]{'row_number'}++;
2614: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2615: if ($alignchar ne '') {
2616: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2617: } else {
2618: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2619: }
2620: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2621: #
2622: # Need to save the number of table columns to preserve the max # columns.
2623: #
2624: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2625: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2626: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2627: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2628: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2629: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2630: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2631: }
2632: }
2633: return $currentstring;
2634: }
2635:
2636: sub end_tr {
2637: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2638: my $currentstring = &end_p(); # Close any pending <p> in the row.
2639: if ($target eq 'web' || $target eq 'webgrade') {
2640: $currentstring .= $token->[2];
2641: } elsif ($target eq 'tex') {
2642:
2643: # In case the user is missing a </td> or </th> tag:
2644:
2645: if ($Apache::londefdef::TD_redirection) {
2646: &end_td_tex($parstack,$parser,$safeeval);
2647: }
2648: $Apache::londefdef::table[-1]->end_row();
2649:
2650: #-----------------------------------------------
2651: # Old table code
2652: #-----------------------------------------------
2653:
2654: if (0) {
2655: if ($Apache::londefdef::TD_redirection) {
2656: &end_td_tex($parstack,$parser,$safeeval);
2657: }
2658: # Counter columns must be the maximum number of columns seen
2659: # in the table so far so:
2660: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2661: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2662: }
2663: }
2664:
2665:
2666: }
2667: return $currentstring;
2668: }
2669:
2670: #-- <td> tag (end tag optional)
2671: sub start_td {
2672: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2673: my $currentstring = '';
2674: if ($target eq 'web' || $target eq 'webgrade') {
2675: $currentstring = $token->[4];
2676: } elsif ($target eq 'tex') {
2677: $Apache::londefdef::TD_redirection = 1;
2678: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2679: }
2680: return $currentstring;
2681: }
2682:
2683: sub tag_check {
2684: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2685: my @ar=@$parstack;
2686: for (my $i=$#ar-1;$i>=0;$i--) {
2687: if (lc($$tagstack[$i]) eq $good_tag) {
2688: &start_td_tex($parstack,$parser,$safeeval);
2689: last;
2690: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2691: splice @ar, $i+1;
2692: &end_td_tex(\@ar,$parser,$safeeval);
2693: &start_td_tex($parstack,$parser,$safeeval);
2694: last;
2695: }
2696: }
2697: return '';
2698: }
2699:
2700: #
2701: # Factor out cell configuration hash generation:
2702: #
2703:
2704: sub cell_config_hash {
2705: my ($align, $rowspan, $colspan, $width) = @_;
2706: if ($rowspan ne '') {
2707: $rowspan =~ s/^\s+|\s+$//g;
2708: }
2709: if ($colspan ne '') {
2710: $colspan =~ s/^\s+|\s+$//g;
2711: }
2712: my %config;
2713: if ($align ne '') {
2714: $config{'halign'} = $align;
2715: }
2716: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2717: $config{'colspan'} = $colspan;
2718: }
2719: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2720: $config{'rowspan'} = $rowspan;
2721: }
2722: if ($width ne '') {
2723: $config{'width'} = $width;
2724: }
2725: return \%config;
2726: }
2727:
2728: sub start_td_tex {
2729: my ($parstack,$parser,$safeeval) = @_;
2730:
2731: # At this stage, an empty cell is created with the
2732: # appropriate rowspan/colspan and alignment
2733: # attributes, but empty of text. end_td_tex will
2734: # fetch the contents from the recursive parse and
2735: # fill the cell with them:
2736: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2737: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2738: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2739: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2740: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2741:
2742: my $table = $Apache::londefdef::table[-1];
2743: $table->add_cell('', $config);
2744:
2745:
2746: #------------------------------------------------
2747: # Old table code.
2748: #------------------------------------------------
2749:
2750: if (0) {
2751:
2752: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2753: if ($alignchar eq '') {
2754: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2755: }
2756: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2757: $Apache::londefdef::table[-1]{'counter_columns'}++;
2758: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2759: if (defined $TeXwidth) {
2760: my $current_length=&recalc($TeXwidth);
2761: $current_length=~/(\d+\.?\d*)/;
2762: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2763: }
2764: }
2765: &Apache::lonxml::startredirection();
2766: return '';
2767: }
2768:
2769: sub end_td_tex {
2770:
2771: my $text = &Apache::lonxml::endredirection();
2772: my $table = $Apache::londefdef::table[-1];
2773: $table->append_cell_text($text);
2774:
2775: #-------------------------------------------------
2776: # Old table code
2777: #-------------------------------------------------
2778:
2779: if (0) {
2780: my ($parstack,$parser,$safeeval) = @_;
2781: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2782: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2783: my $data = &Apache::lonxml::endredirection();
2784:
2785: # The rowspan array of the table indicates which cells are part of a span.
2786: # n indicates the start of a span set of n rows.
2787: # ^ indicates a cell that continues a span set.
2788: # _ indicates the cell is at the bottom of a span set.
2789: # If this and subsequent cells are part of a rowspan, we must
2790: # push along the row until we find one that is not.
2791:
2792: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2793: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2794: # Part of a span.
2795: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2796: $current_column++;
2797: }
2798: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2799:
2800:
2801: # Get the column and row spans.
2802: # Colspan can be done via \multicolumn if I can figure out the data structs.
2803:
2804: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2805: if (!$colspan) {
2806: $colspan = 1;
2807: }
2808:
2809: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2810: if (!$rowspan) {
2811: $rowspan = 1;
2812: }
2813:
2814:
2815:
2816: for (my $c = 0; $c < $colspan; $c++) {
2817: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2818: for (my $i = 1; $i < $rowspan; $i++) {
2819: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2820: if ($i == ($rowspan-1)) {
2821: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2822: }
2823: }
2824: }
2825:
2826: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2827: if (defined $TeXwidth) {
2828: for (my $c = 0; $c < $colspan; $c++) {
2829: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2830: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2831: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2832: }
2833: } else {
2834: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2835: my $garbage_data=$data;
2836: my $fwidth=0;
2837: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2838: my $current_length=&recalc($1);
2839: $current_length=~/(\d+\.?\d*)/;
2840: if ($fwidth<$1) {$fwidth=$1;}
2841: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2842: }
2843: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2844: my $current_length=$1;
2845: if ($fwidth<$current_length) {$fwidth=$current_length;}
2846: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2847: }
2848: for (my $c = 0; $c < $colspan; $c++) {
2849: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2850: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2851: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2852: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2853: }
2854: } 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)*/) {
2855: my $garbage_data=$data;
2856: my $fwidth=0;
2857: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2858: my $current_length=&recalc($1);
2859: $current_length=~/(\d+\.?\d*)/;
2860: if ($fwidth<$1) {$fwidth=$1;}
2861: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2862: }
2863: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2864: my $current_length=&recalc($1);
2865: $current_length=~/(\d+\.?\d*)/;
2866: if ($fwidth<$1) {$fwidth=$1;}
2867: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2868: }
2869: for (my $c = 0; $c < $colspan; $c++) {
2870: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2871: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2872: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2873: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2874: }
2875: $data=~s/\\\\\s*$//;
2876: } else {
2877: $data=~s/^\s+(\S.*)/$1/;
2878: $data=~s/(.*\S)\s+$/$1/;
2879: $data=~s/(\s)+/$1/;
2880: my ($current_length,$min_length)=(0,0);
2881: if ($data=~/\\vskip/) {
2882: my $newdata=$data;
2883: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2884: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2885: foreach my $elementdata (@newdata) {
2886: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2887: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2888: my @words=split(/ /,$elementdata);
2889: foreach my $word (@words) {
2890: my $lengthword=2.5*&LATEX_length($word);
2891: if ($min_length<$lengthword) {$min_length=$lengthword;}
2892: }
2893: }
2894: } else {
2895: $current_length=2.5*&LATEX_length($data);
2896: my @words=split(/ /,$data);
2897: foreach my $word (@words) {
2898: my $lengthword=2*&LATEX_length($word);
2899: if ($min_length<$lengthword) {$min_length=$lengthword;}
2900: }
2901: }
2902: for (my $c = 0; $c < $colspan; $c++) {
2903: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2904: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2905: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2906: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2907: }
2908: }
2909: }
2910: # Substitute all of the tables nested in this cell in their appropriate places.
2911:
2912:
2913: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2914: for (my $in=0; $in<=$nested_count; $in++) {
2915: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2916: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2917: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2918: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2919:
2920: }
2921: # Should be be killing off the 'include' elements as they're used up?
2922:
2923: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2924:
2925:
2926:
2927:
2928: # the colspan array will indicate how many columns will be spanned by this
2929: # cell..this requires that counter_columns also be adjusted accordingly
2930: # so that the next bunch of text goes in the right cell. Note that since
2931: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2932: #
2933:
2934: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2935: for (my $i = 0; $i < ($colspan -1); $i++) {
2936: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2937: }
2938: for (my $r = 0; $r < $rowspan; $r++) {
2939: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2940: # Put empty text in spanned cols.
2941:
2942: }
2943:
2944: }
2945:
2946: return '';
2947: }
2948:
2949: sub end_td {
2950: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2951: my $currentstring = '';
2952: if ($target eq 'web' || $target eq 'webgrade') {
2953: $currentstring = $token->[2];
2954: } elsif ($target eq 'tex') {
2955: $Apache::londefdef::TD_redirection =0;
2956: &end_td_tex($parstack,$parser,$safeeval);
2957: }
2958: return $currentstring;
2959: }
2960:
2961: #-- <th> tag (end tag optional)
2962: sub start_th {
2963: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2964: my $currentstring = '';
2965: if ($target eq 'web' || $target eq 'webgrade') {
2966: $currentstring = $token->[4];
2967: } elsif ($target eq 'tex') {
2968: $Apache::londefdef::TD_redirection = 1;
2969: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2970: }
2971: return $currentstring;
2972: }
2973:
2974: sub tagg_check {
2975: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2976: my @ar=@$parstack;
2977: for (my $i=$#ar-1;$i>=0;$i--) {
2978: if (lc($$tagstack[$i]) eq $good_tag) {
2979: &start_th_tex($parstack,$parser,$safeeval);
2980: last;
2981: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2982: splice @ar, $i+1;
2983: &end_th_tex(\@ar,$parser,$safeeval);
2984: &start_th_tex($parstack,$parser,$safeeval);
2985: last;
2986: }
2987: }
2988: return '';
2989: }
2990:
2991: sub start_th_tex {
2992: my ($parstack,$parser,$safeeval) = @_;
2993:
2994: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2995: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2996: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2997:
2998: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2999: my $table = $Apache::londefdef::table[-1];
3000: $table->add_cell('\textbf{', $config);
3001:
3002: #-------------------------------------------------------------------------------------
3003: #
3004: # Old table code.
3005: #
3006: #--------------------------------------------------------------------------------------
3007:
3008: if (0) {
3009:
3010:
3011: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
3012: if ($alignchar eq '') {
3013: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
3014: }
3015: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
3016: $Apache::londefdef::table[-1]{'counter_columns'}++;
3017: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3018: if (defined $TeXwidth) {
3019: my $current_length=&recalc($TeXwidth);
3020: $current_length=~/(\d+\.?\d*)/;
3021: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
3022: }
3023: }
3024:
3025: # Accept xml until the </th> tag.
3026:
3027: &Apache::lonxml::startredirection();
3028: return '';
3029: }
3030:
3031: sub end_th_tex {
3032: my ($parstack,$parser,$safeeval) = @_;
3033:
3034: my $table = $Apache::londefdef::table[-1];
3035: my $text = &Apache::lonxml::endredirection();
3036: $table->append_cell_text($text.'}');
3037:
3038: #-----------------------------------------------------------------------------
3039: # Old table code:
3040: #-----------------------------------------------------------------------------
3041:
3042: if (0) {
3043: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3044: my $data=&Apache::lonxml::endredirection();
3045: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3046: if (defined $TeXwidth) {
3047: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3048: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3049: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3050: } else {
3051: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3052: my $garbage_data=$data;
3053: my $fwidth=0;
3054: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3055: my $current_length=&recalc($1);
3056: $current_length=~/(\d+\.?\d*)/;
3057: if ($fwidth<$1) {$fwidth=$1;}
3058: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3059: }
3060: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3061: my $current_length=$1;
3062: if ($fwidth<$current_length) {$fwidth=$current_length;}
3063: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3064: }
3065: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3066: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3067: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3068: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3069: } else {
3070: $data=~s/^\s+(\S.*)/$1/;
3071: $data=~s/(.*\S)\s+$/$1/;
3072: $data=~s/(\s)+/$1/;
3073: my ($current_length,$min_length)=(0,0);
3074: if ($data=~/\\vskip/) {
3075: my $newdata=$data;
3076: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3077: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3078: foreach my $elementdata (@newdata) {
3079: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3080: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3081: my @words=split(/ /,$elementdata);
3082: foreach my $word (@words) {
3083: my $lengthword=2.5*&LATEX_length($word);
3084: if ($min_length<$lengthword) {$min_length=$lengthword;}
3085: }
3086: }
3087: } else {
3088: $current_length=2.5*&LATEX_length($data);
3089: my @words=split(/ /,$data);
3090: foreach my $word (@words) {
3091: my $lengthword=2*&LATEX_length($word);
3092: if ($min_length<$lengthword) {$min_length=$lengthword;}
3093: }
3094: }
3095: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3096: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3097: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3098: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3099: }
3100: }
3101: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3102: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3103: }
3104: #make data bold
3105: $data='\textbf{'.$data.'}';
3106: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3107: }
3108: return'';
3109: }
3110:
3111: sub end_th {
3112: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3113: my $currentstring = &end_p(); # Close any open <p> in the row.
3114: if ($target eq 'web' || $target eq 'webgrade') {
3115: $currentstring .= $token->[2];
3116: } elsif ($target eq 'tex') {
3117: $Apache::londefdef::TD_redirection =0;
3118: &end_th_tex($parstack,$parser,$safeeval);
3119: }
3120: return $currentstring;
3121: }
3122:
3123: #-- <img> tag (end tag forbidden)
3124: #
3125: # Render the <IMG> tag.
3126: # <IMG> has the following attributes (in addition to the
3127: # standard HTML ones:
3128: # TeXwrap - Governs how the tex target will try to wrap text around
3129: # horizontally aligned images.
3130: # TeXwidth - The width of the image when rendered for print (mm).
3131: # TeXheight - The height of the image when rendered for print (mm)
3132: # (Note there seems to also be support for this as a % of page size)
3133: #
3134: sub start_img {
3135: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3136: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3137: undef,1);
3138: if (! $src &&
3139: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3140: ) {
3141: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3142: return '';
3143: }
3144: &Apache::lonxml::extlink($src);
3145: my $currentstring = '';
3146: my $scaling = .3;
3147:
3148: # Render unto browsers that which are the browser's...
3149:
3150: if ($target eq 'web' || $target eq 'webgrade') {
3151: if ($env{'browser.imagesuppress'} ne 'on') {
3152: my $enc = ('yes' eq
3153: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3154: $safeeval)));
3155: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3156: $enc);
3157: } else {
3158: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3159: undef,1);
3160: if (!$alttag) {
3161: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3162: $src);
3163: }
3164: $currentstring.='[IMAGE: '.$alttag.']';
3165: }
3166:
3167: # and render unto TeX that which is LaTeX
3168:
3169: } elsif ($target eq 'tex') {
3170: #
3171: # The alignment will require some superstructure to be put around
3172: # the \includegraphics stuff. At present we can only partially
3173: # simulate the alignments offered by html.
3174: #
3175: #
3176: my $align = lc(&Apache::lonxml::get_param('align',
3177: $parstack,
3178: $safeeval,
3179: undef,1));
3180: if(!$align) {
3181: $align = "bottom"; # This is html's default so it's ours too.
3182: }
3183: #
3184: &Apache::lonxml::debug("Alignemnt = $align");
3185: # LaTeX's image/text wrapping is really bad since it wants to
3186: # make figures float.
3187: # The user has the optional parameter (applicable only to l/r
3188: # alignment to use the picins/parpic directive to get wrapped text
3189: # this is also imperfect.. that's why we give them a choice...
3190: # so they can't yell at us for our choice.
3191: #
3192: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3193: $parstack,
3194: $safeeval,
3195: undef,0);
3196: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3197: if(!$latex_rendering) {
3198: $latex_rendering = "texwrap";
3199: }
3200: # using texwrap inside a table does not work. So, if after all of this,
3201: # texwrap is on, we turn it off if we detect we're in a table:
3202: #
3203: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3204: $latex_rendering = 'parpic';
3205: }
3206:
3207: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3208:
3209: #if original bmp/gif/jpg/png file exist do following:
3210: my $origsrc=$src;
3211: my ($path,$file) = &get_eps_image($src);
3212: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3213: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3214: &Apache::lonxml::debug("path = $path file = $file src = $src");
3215: if (-e $src) {
3216: &Apache::lonxml::debug("$src exists");
3217: my ($height_param,$width_param)=
3218: &image_size($origsrc,0.3,$parstack,$safeeval);
3219: my $size;
3220: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3221: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3222: # Default size if not able to extract that (e.g. eps image).
3223:
3224: # &Apache::lonnet::logthis("Size = $size");
3225:
3226: $size='['.$size;
3227: $size=~s/,$/]/;
3228: $currentstring .= '\graphicspath{{'.$path.'}}'
3229: .'\includegraphics'.$size.'{'.$file.'} ';
3230: my $closure;
3231: ($currentstring, $closure) = &align_latex_image($align,
3232: $latex_rendering,
3233: $currentstring,
3234: $width_param,
3235: $height_param);
3236: $currentstring .= $closure;
3237:
3238: } else {
3239: &Apache::lonxml::debug("$src does not exist");
3240: #original image file doesn't exist so check the alt attribute
3241: my $alt =
3242: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3243: unless ($alt) {
3244: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3245: }
3246:
3247: if ($alt) { $currentstring .= ' '.$alt.' '; }
3248: }
3249:
3250: # And here's where the semi-quote breaks down: allow the user
3251: # to edit the beast as well by rendering the problem for edit:
3252: } elsif ($target eq 'edit') {
3253: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3254: $currentstring .=&Apache::edit::tag_start($target,$token);
3255: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3256: &Apache::edit::browse('src',undef,'alt',$only).' '.
3257: &Apache::edit::search('src',undef,'alt').'<br />';
3258: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3259: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3260: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3261: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3262: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3263: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3264: ['','bottom','middle','top','left','right'],$token,5);
3265: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3266: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3267: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3268: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
3269:
3270: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3271: ['no','yes'], $token, 2);
3272: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
3273: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
3274: }
3275: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3276: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3277: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3278: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3279:
3280: if ($token->[2]{'src'}=~/\$/) {
3281: $currentstring.=&mt('Variable image source');
3282: } elsif ($token->[2]{'src'}=~/\S/) {
3283: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3284: if ($width) { $currentstring.=' width="'.$width.'" '; }
3285: if ($height) { $currentstring.=' height="'.$height.'" '; }
3286: $currentstring .= ' />';
3287: } else {
3288: $currentstring.=&mt("No image source specified");
3289: }
3290: } elsif ($target eq 'modified') {
3291: my ($osrc,$owidth,$oheight)=
3292: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3293: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3294: $safeeval,'src','alt','align',
3295: 'TeXwidth','TeXheight', 'TeXwrap',
3296: 'width','height','encrypturl');
3297: my ($nsrc,$nwidth,$nheight)=
3298: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3299: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3300: &image_replication($loc);
3301: my ($iwidth,$iheight);
3302: if (-e $loc) {
3303: my $image = Image::Magick->new;
3304: $image->Read($loc);
3305: ($iwidth, $iheight) = ($image->Get('width'),
3306: $image->Get('height'));
3307: }
3308: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3309: # changed image or no size specified,
3310: # if they didn't explicitly change the
3311: # width or height use the ones from the image
3312: if ($iwidth && $iheight) {
3313: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3314: $token->[2]{'width'} = $iwidth;$ctag=1;
3315: }
3316: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3317: $token->[2]{'height'}=$iheight;$ctag=1;
3318: }
3319: }
3320: }
3321: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3322: # if we don't have a width or height
3323: if ($iwidth && $cwidth && !$cheight) {
3324: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3325: }
3326: if ($iheight && $cheight && !$cwidth) {
3327: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3328: }
3329: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3330: }
3331:
3332: return $currentstring;
3333: }
3334:
3335: sub end_img {
3336: my ($target,$token) = @_;
3337: my $currentstring = '';
3338: if ($target eq 'web' || $target eq 'webgrade') {
3339: $currentstring = $token->[2];
3340: } elsif ($target eq 'tex') {
3341: $currentstring = '';
3342: }
3343: return $currentstring;
3344: }
3345:
3346: #-- <applet> tag (end tag required)
3347: sub start_applet {
3348: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3349:
3350: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3351: &Apache::lonxml::extlink($code);
3352: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3353: undef,1);
3354: &Apache::lonxml::extlink($archive);
3355: my $currentstring = '';
3356: if ($target eq 'web' || $target eq 'webgrade') {
3357: if ($env{'browser.appletsuppress'} ne 'on') {
3358: $currentstring = &Apache::lonenc::encrypt_ref($token,
3359: {'code'=>$code,
3360: 'archive'=>$archive}
3361: );
3362: } else {
3363: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3364: $safeeval,undef,1);
3365: unless ($alttag) {
3366: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3367: $code);
3368: }
3369: $currentstring='[APPLET: '.$alttag.']';
3370: }
3371: } elsif ($target eq 'tex') {
3372: # Turn off some stuff we can't be inside thank you LaTeX
3373:
3374:
3375: my $restart_sub = 0;
3376: my $restart_sup = 0;
3377:
3378: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3379: # using the start_ stop_ functions.. those tags only care about
3380: # $target.
3381:
3382: if (&is_inside_of($tagstack, "sub")) {
3383: $restart_sub = 1;
3384: $currentstring .= &end_sub($target, $token, $tagstack,
3385: $parstack, $parser, $safeeval);
3386: }
3387: if (&is_inside_of($tagstack, "sup")) {
3388: $restart_sup = 1;
3389: $currentstring .= &end_sup($target, $token, $tagstack,
3390: $parstack, $parser, $safeeval);
3391: }
3392:
3393: # Now process the applet; just replace it with its alt attribute.
3394:
3395: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3396: $safeeval,undef,1);
3397: unless ($alttag) {
3398: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3399: undef,1);
3400: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3401: $code);
3402: }
3403: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3404: '.}\end{center}';
3405:
3406: # Turn stuff back on that we can't be inside of.
3407:
3408: if ($restart_sub) {
3409: $currentstring .= &start_sub($target, $token, $tagstack,
3410: $parstack, $parser, $safeeval);
3411: }
3412: if ($restart_sup) {
3413: $currentstring .= &start_sup($target, $token, $tagstack,
3414: $parstack, $parser, $safeeval);
3415: }
3416: }
3417: return $currentstring;
3418: }
3419:
3420: sub end_applet {
3421: my ($target,$token) = @_;
3422: my $currentstring = '';
3423: if ($target eq 'web' || $target eq 'webgrade') {
3424: $currentstring = $token->[2];
3425: } elsif ($target eq 'tex') {
3426: }
3427: return $currentstring;
3428: }
3429:
3430: #-- <embed> tag (end tag optional/required)
3431: sub start_embed {
3432: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3433: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3434: &Apache::lonxml::extlink($src);
3435: my $currentstring = '';
3436: if ($target eq 'web' || $target eq 'webgrade') {
3437: if ($env{'browser.embedsuppress'} ne 'on') {
3438: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3439: } else {
3440: my $alttag=&Apache::lonxml::get_param
3441: ('alt',$parstack,$safeeval,undef,1);
3442: unless ($alttag) {
3443: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3444: }
3445: $currentstring='[EMBED: '.$alttag.']';
3446: }
3447: } elsif ($target eq 'tex') {
3448: }
3449: return $currentstring;
3450: }
3451:
3452: sub end_embed {
3453: my ($target,$token) = @_;
3454: my $currentstring = '';
3455: if ($target eq 'web' || $target eq 'webgrade') {
3456: $currentstring = $token->[2];
3457: } elsif ($target eq 'tex') {
3458: }
3459: return $currentstring;
3460: }
3461:
3462: #-- <param> tag (end tag forbidden)
3463: sub start_param {
3464: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3465: if (&Apache::lonxml::get_param('name',$parstack,
3466: $safeeval,undef,1)=~/^cabbase$/i) {
3467: my $value=&Apache::lonxml::get_param('value',$parstack,
3468: $safeeval,undef,1);
3469: &Apache::lonxml::extlink($value);
3470: }
3471:
3472: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3473: &Apache::lonxml::extlink($src);
3474: my $currentstring = '';
3475: if ($target eq 'web' || $target eq 'webgrade') {
3476: my %toconvert;
3477: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3478: if ($src) { $toconvert{'src'}= $src; }
3479: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3480: undef,1);
3481: if ($name=~/^cabbase$/i) {
3482: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3483: $safeeval,undef,1);
3484: }
3485: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3486: } elsif ($target eq 'tex') {
3487: }
3488: return $currentstring;
3489: }
3490:
3491: sub end_param {
3492: my ($target,$token) = @_;
3493: my $currentstring = '';
3494: if ($target eq 'web' || $target eq 'webgrade') {
3495: $currentstring = $token->[2];
3496: } elsif ($target eq 'tex') {
3497: }
3498: return $currentstring;
3499: }
3500:
3501: #-- <allow> tag
3502: sub start_allow {
3503: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3504: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3505: &Apache::lonxml::extlink($src);
3506:
3507: if ($target eq 'tex') { &image_replication($src); }
3508: my $result;
3509: if ($target eq 'edit') {
3510: $result .=&Apache::edit::tag_start($target,$token);
3511: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3512: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3513: } elsif ($target eq 'modified') {
3514: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3515: $safeeval,'src');
3516: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3517: }
3518: return $result;
3519: }
3520:
3521: sub end_allow {
3522: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3523: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3524: return '';
3525: }
3526:
3527: #-- Frames (end tag required)
3528: #-- <frameset>
3529: sub start_frameset {
3530: my ($target,$token) = @_;
3531: my $currentstring = ''; # Close any pending para.
3532: if ($target eq 'web' || $target eq 'webgrade') {
3533: $currentstring =
3534: &Apache::loncommon::start_page($Apache::londefdef::title,
3535: $Apache::londefdef::head,
3536: {'add_entries' => $token->[2],
3537: 'no_title' => 1,
3538: 'force_register' => 1,
3539: 'frameset' => 1,});
3540:
3541: }
3542: return $currentstring;
3543: }
3544:
3545: sub end_frameset {
3546: my ($target,$token) = @_;
3547: my $currentstring = '';
3548: if ($target eq 'web' || $target eq 'webgrade') {
3549: $currentstring = $token->[2];
3550: }
3551: return $currentstring;
3552: }
3553:
3554: #-- <xmp> (end tag required)
3555: sub start_xmp {
3556: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3557: my $currentstring = '';
3558: if ($target eq 'web' || $target eq 'webgrade') {
3559: $currentstring .= $token->[4];
3560: } elsif ($target eq 'tex') {
3561: $currentstring .= '\begin{verbatim}';
3562: }
3563: return $currentstring;
3564: }
3565:
3566: sub end_xmp {
3567: my ($target,$token) = @_;
3568: my $currentstring = '';
3569: if ($target eq 'web' || $target eq 'webgrade') {
3570: $currentstring .= $token->[2];
3571: } elsif ($target eq 'tex') {
3572: $currentstring .= '\end{verbatim}';
3573: }
3574: return $currentstring;
3575: }
3576:
3577: #-- <pre> (end tag required)
3578: sub start_pre {
3579: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3580: my $currentstring = &end_p(); # close off pending <p>
3581: if ($target eq 'web' || $target eq 'webgrade') {
3582: $currentstring .= $token->[4];
3583: } elsif ($target eq 'tex') {
3584: $currentstring .= '\begin{verbatim}';
3585: &Apache::lonxml::disable_LaTeX_substitutions();
3586: }
3587: return $currentstring;
3588: }
3589:
3590: sub end_pre {
3591: my ($target,$token) = @_;
3592: my $currentstring = '';
3593: if ($target eq 'web' || $target eq 'webgrade') {
3594: $currentstring .= $token->[2];
3595: } elsif ($target eq 'tex') {
3596: $currentstring .= '\end{verbatim}';
3597: &Apache::lonxml::enable_LaTeX_substitutions();
3598: }
3599: return $currentstring;
3600: }
3601:
3602: #-- <insert>
3603: sub start_insert {
3604: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3605: my $currentstring = '';
3606: if ($target eq 'web' || $target eq 'webgrade') {
3607: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3608: $currentstring .= '<b>'.$display.'</b>';;
3609: }
3610: return $currentstring;
3611: }
3612:
3613: sub end_insert {
3614: my ($target,$token) = @_;
3615: my $currentstring = '';
3616: if ($target eq 'web' || $target eq 'webgrade') {
3617: $currentstring .= '';
3618: }
3619: return $currentstring;
3620: }
3621:
3622: #-- <externallink>
3623: sub start_externallink {
3624: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3625: my $currentstring = '';
3626: if ($target eq 'web' || $target eq 'webgrade') {
3627: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3628: $currentstring .= '<b>'.$display.'</b>';;
3629: }
3630: return $currentstring;
3631: }
3632:
3633: sub end_externallink {
3634: my ($target,$token) = @_;
3635: my $currentstring = '';
3636: if ($target eq 'web' || $target eq 'webgrade') {
3637: $currentstring .= '';
3638: }
3639: return $currentstring;
3640: }
3641:
3642: #-- <blankspace heigth="">
3643: sub start_blankspace {
3644: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3645: my $currentstring = &end_p(); # closes off any unclosed <p>
3646: if ($target eq 'tex') {
3647: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3648: $currentstring .= '\vskip '.$howmuch.' ';
3649: }
3650: return $currentstring;
3651: }
3652:
3653: sub end_blankspace {
3654: my ($target,$token) = @_;
3655: my $currentstring = '';
3656: if ($target eq 'tex') {
3657: $currentstring .= '';
3658: }
3659: return $currentstring;
3660: }
3661:
3662: #-- <abbr> tag (end tag required)
3663: sub start_abbr {
3664: my ($target,$token) = @_;
3665: my $currentstring = '';
3666: if ($target eq 'web' || $target eq 'webgrade') {
3667: $currentstring = $token->[4];
3668: }
3669: return $currentstring;
3670: }
3671:
3672: sub end_abbr {
3673: my ($target,$token) = @_;
3674: my $currentstring = '';
3675: if ($target eq 'web' || $target eq 'webgrade') {
3676: $currentstring = $token->[2];
3677: }
3678: return $currentstring;
3679: }
3680:
3681: #-- <acronym> tag (end tag required)
3682: sub start_acronym {
3683: my ($target,$token) = @_;
3684: my $currentstring = '';
3685: if ($target eq 'web' || $target eq 'webgrade') {
3686: $currentstring = $token->[4];
3687: }
3688: return $currentstring;
3689: }
3690:
3691: sub end_acronym {
3692: my ($target,$token) = @_;
3693: my $currentstring = '';
3694: if ($target eq 'web' || $target eq 'webgrade') {
3695: $currentstring = $token->[2];
3696: }
3697: return $currentstring;
3698: }
3699:
3700: #-- <area> tag (end tag forbidden)
3701: sub start_area {
3702: my ($target,$token) = @_;
3703: my $currentstring = '';
3704: if ($target eq 'web' || $target eq 'webgrade') {
3705: $currentstring = $token->[4];
3706: }
3707: return $currentstring;
3708: }
3709:
3710: sub end_area {
3711: my ($target,$token) = @_;
3712: my $currentstring = '';
3713: if ($target eq 'web' || $target eq 'webgrade') {
3714: $currentstring = $token->[2];
3715: }
3716: return $currentstring;
3717: }
3718:
3719: #-- <base> tag (end tag forbidden)
3720: sub start_base {
3721: my ($target,$token) = @_;
3722: my $currentstring = '';
3723: if ($target eq 'web' || $target eq 'webgrade') {
3724: $currentstring = $token->[4];
3725: }
3726: return $currentstring;
3727: }
3728:
3729: sub end_base {
3730: my ($target,$token) = @_;
3731: my $currentstring = '';
3732: if ($target eq 'web' || $target eq 'webgrade') {
3733: $currentstring = $token->[2];
3734: }
3735: return $currentstring;
3736: }
3737:
3738: #-- <bdo> tag (end tag required)
3739: sub start_bdo {
3740: my ($target,$token) = @_;
3741: my $currentstring = '';
3742: if ($target eq 'web' || $target eq 'webgrade') {
3743: $currentstring = $token->[4];
3744: }
3745: return $currentstring;
3746: }
3747:
3748: sub end_bdo {
3749: my ($target,$token) = @_;
3750: my $currentstring = '';
3751: if ($target eq 'web' || $target eq 'webgrade') {
3752: $currentstring = $token->[2];
3753: }
3754: return $currentstring;
3755: }
3756:
3757: #-- <bgsound> tag (end tag optional)
3758: sub start_bgsound {
3759: my ($target,$token) = @_;
3760: my $currentstring = '';
3761: if ($target eq 'web' || $target eq 'webgrade') {
3762: $currentstring = $token->[4];
3763: }
3764: return $currentstring;
3765: }
3766:
3767: sub end_bgsound {
3768: my ($target,$token) = @_;
3769: my $currentstring = '';
3770: if ($target eq 'web' || $target eq 'webgrade') {
3771: $currentstring = $token->[2];
3772: }
3773: return $currentstring;
3774: }
3775:
3776: #-- <blink> tag (end tag required)
3777: sub start_blink {
3778: my ($target,$token) = @_;
3779: my $currentstring = '';
3780: if ($target eq 'web' || $target eq 'webgrade') {
3781: $currentstring = $token->[4];
3782: }
3783: return $currentstring;
3784: }
3785:
3786: sub end_blink {
3787: my ($target,$token) = @_;
3788: my $currentstring = '';
3789: if ($target eq 'web' || $target eq 'webgrade') {
3790: $currentstring = $token->[2];
3791: }
3792: return $currentstring;
3793: }
3794:
3795: #-- <blockquote> tag (end tag required)
3796: sub start_blockquote {
3797: my ($target,$token) = @_;
3798: my $currentstring = &end_p(); # Close any unclosed <p>
3799: if ($target eq 'web' || $target eq 'webgrade') {
3800: $currentstring .= $token->[4];
3801: }
3802: if ($target eq 'tex') {
3803: $currentstring .= '\begin{quote}';
3804: }
3805: return $currentstring;
3806: }
3807:
3808: sub end_blockquote {
3809: my ($target,$token) = @_;
3810: my $currentstring = '';
3811: if ($target eq 'web' || $target eq 'webgrade') {
3812: $currentstring = $token->[2];
3813: }
3814: if ($target eq 'tex') {
3815: $currentstring = '\end{quote}';
3816: }
3817: return $currentstring;
3818: }
3819:
3820: #-- <button> tag (end tag required)
3821: sub start_button {
3822: my ($target,$token) = @_;
3823: my $currentstring = '';
3824: if ($target eq 'web' || $target eq 'webgrade') {
3825: $currentstring = $token->[4];
3826: }
3827: return $currentstring;
3828: }
3829:
3830: sub end_button {
3831: my ($target,$token) = @_;
3832: my $currentstring = '';
3833: if ($target eq 'web' || $target eq 'webgrade') {
3834: $currentstring = $token->[2];
3835: }
3836: return $currentstring;
3837: }
3838:
3839: #-- <caption> tag (end tag required)
3840: sub start_caption {
3841: my ($target,$token) = @_;
3842: my $currentstring = '';
3843: if ($target eq 'web' || $target eq 'webgrade') {
3844: $currentstring = $token->[4];
3845: }
3846: return $currentstring;
3847: }
3848:
3849: sub end_caption {
3850: my ($target,$token) = @_;
3851: my $currentstring = '';
3852: if ($target eq 'web' || $target eq 'webgrade') {
3853: $currentstring = $token->[2];
3854: }
3855: return $currentstring;
3856: }
3857:
3858: #-- <col> tag (end tag forbdden)
3859: sub start_col {
3860: my ($target,$token) = @_;
3861: my $currentstring = '';
3862: if ($target eq 'web' || $target eq 'webgrade') {
3863: $currentstring = $token->[4];
3864: }
3865: return $currentstring;
3866: }
3867:
3868: sub end_col {
3869: my ($target,$token) = @_;
3870: my $currentstring = '';
3871: if ($target eq 'web' || $target eq 'webgrade') {
3872: $currentstring = $token->[2];
3873: }
3874: return $currentstring;
3875: }
3876:
3877: #-- <colgroup> tag (end tag optional)
3878: sub start_colgroup {
3879: my ($target,$token) = @_;
3880: my $currentstring = '';
3881: if ($target eq 'web' || $target eq 'webgrade') {
3882: $currentstring = $token->[4];
3883: }
3884: return $currentstring;
3885: }
3886:
3887: sub end_colgroup {
3888: my ($target,$token) = @_;
3889: my $currentstring = '';
3890: if ($target eq 'web' || $target eq 'webgrade') {
3891: $currentstring = $token->[2];
3892: }
3893: return $currentstring;
3894: }
3895:
3896: #-- <del> tag (end tag required)
3897: sub start_del {
3898: my ($target,$token) = @_;
3899: my $currentstring = '';
3900: if ($target eq 'web' || $target eq 'webgrade') {
3901: $currentstring = $token->[4];
3902: }
3903: return $currentstring;
3904: }
3905:
3906: sub end_del {
3907: my ($target,$token) = @_;
3908: my $currentstring = '';
3909: if ($target eq 'web' || $target eq 'webgrade') {
3910: $currentstring = $token->[2];
3911: }
3912: return $currentstring;
3913: }
3914:
3915: #-- <fieldset> tag (end tag required)
3916: sub start_fieldset {
3917: my ($target,$token) = @_;
3918: my $currentstring = '';
3919: if ($target eq 'web' || $target eq 'webgrade') {
3920: $currentstring = $token->[4];
3921: }
3922: return $currentstring;
3923: }
3924:
3925: sub end_fieldset {
3926: my ($target,$token) = @_;
3927: my $currentstring = '';
3928: if ($target eq 'web' || $target eq 'webgrade') {
3929: $currentstring = $token->[2];
3930: }
3931: return $currentstring;
3932: }
3933:
3934: #-- <frame> tag (end tag forbidden)
3935: sub start_frame {
3936: my ($target,$token) = @_;
3937: my $currentstring = '';
3938: if ($target eq 'web' || $target eq 'webgrade') {
3939: $currentstring = $token->[4];
3940: }
3941: return $currentstring;
3942: }
3943:
3944: sub end_frame {
3945: my ($target,$token) = @_;
3946: my $currentstring = '';
3947: if ($target eq 'web' || $target eq 'webgrade') {
3948: $currentstring = $token->[2];
3949: }
3950: return $currentstring;
3951: }
3952:
3953: #-- <iframe> tag (end tag required)
3954: sub start_iframe {
3955: my ($target,$token) = @_;
3956: my $currentstring = '';
3957: if ($target eq 'web' || $target eq 'webgrade') {
3958: $currentstring = $token->[4];
3959: }
3960: return $currentstring;
3961: }
3962:
3963: sub end_iframe {
3964: my ($target,$token) = @_;
3965: my $currentstring = '';
3966: if ($target eq 'web' || $target eq 'webgrade') {
3967: $currentstring = $token->[2];
3968: }
3969: return $currentstring;
3970: }
3971:
3972: #-- <ins> tag (end tag required)
3973: sub start_ins {
3974: my ($target,$token) = @_;
3975: my $currentstring = '';
3976: if ($target eq 'web' || $target eq 'webgrade') {
3977: $currentstring = $token->[4];
3978: }
3979: return $currentstring;
3980: }
3981:
3982: sub end_ins {
3983: my ($target,$token) = @_;
3984: my $currentstring = '';
3985: if ($target eq 'web' || $target eq 'webgrade') {
3986: $currentstring = $token->[2];
3987: }
3988: return $currentstring;
3989: }
3990:
3991: #-- <isindex> tag (end tag forbidden)
3992: sub start_isindex {
3993: my ($target,$token) = @_;
3994: my $currentstring = '';
3995: if ($target eq 'web' || $target eq 'webgrade') {
3996: $currentstring = $token->[4];
3997: }
3998: return $currentstring;
3999: }
4000:
4001: sub end_isindex {
4002: my ($target,$token) = @_;
4003: my $currentstring = '';
4004: if ($target eq 'web' || $target eq 'webgrade') {
4005: $currentstring = $token->[2];
4006: }
4007: return $currentstring;
4008: }
4009:
4010: #-- <keygen> tag (end tag forbidden)
4011: sub start_keygen {
4012: my ($target,$token) = @_;
4013: my $currentstring = '';
4014: if ($target eq 'web' || $target eq 'webgrade') {
4015: $currentstring = $token->[4];
4016: }
4017: return $currentstring;
4018: }
4019:
4020: sub end_keygen {
4021: my ($target,$token) = @_;
4022: my $currentstring = '';
4023: if ($target eq 'web' || $target eq 'webgrade') {
4024: $currentstring = $token->[2];
4025: }
4026: return $currentstring;
4027: }
4028:
4029: #-- <label> tag
4030: sub start_label {
4031: my ($target,$token) = @_;
4032: my $currentstring = '';
4033: if ($target eq 'web' || $target eq 'webgrade') {
4034: $currentstring = $token->[4];
4035: }
4036: return $currentstring;
4037: }
4038:
4039: sub end_label {
4040: my ($target,$token) = @_;
4041: my $currentstring = '';
4042: if ($target eq 'web' || $target eq 'webgrade') {
4043: $currentstring = $token->[2];
4044: }
4045: return $currentstring;
4046: }
4047:
4048: #-- <layer> tag (end tag required)
4049: sub start_layer {
4050: my ($target,$token) = @_;
4051: my $currentstring = '';
4052: if ($target eq 'web' || $target eq 'webgrade') {
4053: $currentstring = $token->[4];
4054: }
4055: return $currentstring;
4056: }
4057:
4058: sub end_layer {
4059: my ($target,$token) = @_;
4060: my $currentstring = '';
4061: if ($target eq 'web' || $target eq 'webgrade') {
4062: $currentstring = $token->[2];
4063: }
4064: return $currentstring;
4065: }
4066:
4067: #-- <legend> tag (end tag required)
4068: sub start_legend {
4069: my ($target,$token) = @_;
4070: my $currentstring = '';
4071: if ($target eq 'web' || $target eq 'webgrade') {
4072: $currentstring = $token->[4];
4073: }
4074: return $currentstring;
4075: }
4076:
4077: sub end_legend {
4078: my ($target,$token) = @_;
4079: my $currentstring = '';
4080: if ($target eq 'web' || $target eq 'webgrade') {
4081: $currentstring = $token->[2];
4082: }
4083: return $currentstring;
4084: }
4085:
4086: #-- <link> tag (end tag forbidden)
4087: sub start_link {
4088: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4089: my $currentstring = '';
4090: if ($target eq 'web' || $target eq 'webgrade') {
4091: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4092: undef,1);
4093: &Apache::lonxml::extlink($href);
4094: $currentstring = $token->[4];
4095: }
4096: return $currentstring;
4097: }
4098:
4099: sub end_link {
4100: my ($target,$token) = @_;
4101: my $currentstring = '';
4102: if ($target eq 'web' || $target eq 'webgrade') {
4103: $currentstring = $token->[2];
4104: }
4105: return $currentstring;
4106: }
4107:
4108: #-- <marquee> tag (end tag optional)
4109: sub start_marquee {
4110: my ($target,$token) = @_;
4111: my $currentstring = '';
4112: if ($target eq 'web' || $target eq 'webgrade') {
4113: $currentstring = $token->[4];
4114: }
4115: return $currentstring;
4116: }
4117:
4118: sub end_marquee {
4119: my ($target,$token) = @_;
4120: my $currentstring = '';
4121: if ($target eq 'web' || $target eq 'webgrade') {
4122: $currentstring = $token->[2];
4123: }
4124: return $currentstring;
4125: }
4126:
4127: #-- <multicol> tag (end tag required)
4128: sub start_multicol {
4129: my ($target,$token) = @_;
4130: my $currentstring = &end_p(); # Close any pending <p>
4131: if ($target eq 'web' || $target eq 'webgrade') {
4132: $currentstring .= $token->[4];
4133: }
4134: return $currentstring;
4135: }
4136:
4137: sub end_multicol {
4138: my ($target,$token) = @_;
4139: my $currentstring = '';
4140: if ($target eq 'web' || $target eq 'webgrade') {
4141: $currentstring = $token->[2];
4142: }
4143: return $currentstring;
4144: }
4145:
4146: #-- <nobr> tag (end tag required)
4147: sub start_nobr {
4148: my ($target,$token) = @_;
4149: my $currentstring = '';
4150: if ($target eq 'web' || $target eq 'webgrade') {
4151: $currentstring = $token->[4];
4152: } elsif ($target eq 'tex') {
4153: $currentstring='\mbox{';
4154: }
4155: return $currentstring;
4156: }
4157:
4158: sub end_nobr {
4159: my ($target,$token) = @_;
4160: my $currentstring = '';
4161: if ($target eq 'web' || $target eq 'webgrade') {
4162: $currentstring = $token->[2];
4163: } elsif ($target eq 'tex') {
4164: $currentstring='}';
4165: }
4166: return $currentstring;
4167: }
4168:
4169: #-- <noembed> tag (end tag required)
4170: sub start_noembed {
4171: my ($target,$token) = @_;
4172: my $currentstring = '';
4173: if ($target eq 'web' || $target eq 'webgrade') {
4174: $currentstring = $token->[4];
4175: }
4176: return $currentstring;
4177: }
4178:
4179: sub end_noembed {
4180: my ($target,$token) = @_;
4181: my $currentstring = '';
4182: if ($target eq 'web' || $target eq 'webgrade') {
4183: $currentstring = $token->[2];
4184: }
4185: return $currentstring;
4186: }
4187:
4188: #-- <noframes> tag (end tag required)
4189: sub start_noframes {
4190: my ($target,$token) = @_;
4191: my $currentstring = '';
4192: if ($target eq 'web' || $target eq 'webgrade') {
4193: $currentstring = $token->[4];
4194: }
4195: return $currentstring;
4196: }
4197:
4198: sub end_noframes {
4199: my ($target,$token) = @_;
4200: my $currentstring = '';
4201: if ($target eq 'web' || $target eq 'webgrade') {
4202: $currentstring = $token->[2];
4203: }
4204: return $currentstring;
4205: }
4206:
4207: #-- <nolayer> tag (end tag required)
4208: sub start_nolayer {
4209: my ($target,$token) = @_;
4210: my $currentstring = '';
4211: if ($target eq 'web' || $target eq 'webgrade') {
4212: $currentstring = $token->[4];
4213: }
4214: return $currentstring;
4215: }
4216:
4217: sub end_nolayer {
4218: my ($target,$token) = @_;
4219: my $currentstring = '';
4220: if ($target eq 'web' || $target eq 'webgrade') {
4221: $currentstring = $token->[2];
4222: }
4223: return $currentstring;
4224: }
4225:
4226: #-- <noscript> tag (end tag required)
4227: sub start_noscript {
4228: my ($target,$token) = @_;
4229: my $currentstring = '';
4230: if ($target eq 'web' || $target eq 'webgrade') {
4231: $currentstring = $token->[4];
4232: }
4233: return $currentstring;
4234: }
4235:
4236: sub end_noscript {
4237: my ($target,$token) = @_;
4238: my $currentstring = '';
4239: if ($target eq 'web' || $target eq 'webgrade') {
4240: $currentstring = $token->[2];
4241: }
4242: return $currentstring;
4243: }
4244:
4245: #-- <object> tag (end tag required)
4246: sub start_object {
4247: my ($target,$token) = @_;
4248: my $currentstring = '';
4249: if ($target eq 'web' || $target eq 'webgrade') {
4250: $currentstring = $token->[4];
4251: }
4252: return $currentstring;
4253: }
4254:
4255: sub end_object {
4256: my ($target,$token) = @_;
4257: my $currentstring = '';
4258: if ($target eq 'web' || $target eq 'webgrade') {
4259: $currentstring = $token->[2];
4260: }
4261: return $currentstring;
4262: }
4263:
4264: #-- <optgroup> tag (end tag required)
4265: sub start_optgroup {
4266: my ($target,$token) = @_;
4267: my $currentstring = '';
4268: if ($target eq 'web' || $target eq 'webgrade') {
4269: $currentstring = $token->[4];
4270: }
4271: return $currentstring;
4272: }
4273:
4274: sub end_optgroup {
4275: my ($target,$token) = @_;
4276: my $currentstring = '';
4277: if ($target eq 'web' || $target eq 'webgrade') {
4278: $currentstring = $token->[2];
4279: }
4280: return $currentstring;
4281: }
4282:
4283: #-- <samp> tag (end tag required)
4284: sub start_samp {
4285: my ($target,$token) = @_;
4286: my $currentstring = '';
4287: if ($target eq 'web' || $target eq 'webgrade') {
4288: $currentstring = $token->[4];
4289: } elsif ($target eq 'tex') {
4290: $currentstring='\texttt{';
4291: }
4292: return $currentstring;
4293: }
4294:
4295: sub end_samp {
4296: my ($target,$token) = @_;
4297: my $currentstring = '';
4298: if ($target eq 'web' || $target eq 'webgrade') {
4299: $currentstring = $token->[2];
4300: } elsif ($target eq 'tex') {
4301: $currentstring='}';
4302: }
4303: return $currentstring;
4304: }
4305:
4306: #-- <server> tag
4307: sub start_server {
4308: my ($target,$token) = @_;
4309: my $currentstring = '';
4310: if ($target eq 'web' || $target eq 'webgrade') {
4311: $currentstring = $token->[4];
4312: }
4313: return $currentstring;
4314: }
4315:
4316: sub end_server {
4317: my ($target,$token) = @_;
4318: my $currentstring = '';
4319: if ($target eq 'web' || $target eq 'webgrade') {
4320: $currentstring = $token->[2];
4321: }
4322: return $currentstring;
4323: }
4324:
4325: #-- <spacer> tag (end tag forbidden)
4326: sub start_spacer {
4327: my ($target,$token) = @_;
4328: my $currentstring = &end_p(); # Close off any open <p> tag.
4329: if ($target eq 'web' || $target eq 'webgrade') {
4330: $currentstring .= $token->[4];
4331: }
4332: return $currentstring;
4333: }
4334:
4335: sub end_spacer {
4336: my ($target,$token) = @_;
4337: my $currentstring = '';
4338: if ($target eq 'web' || $target eq 'webgrade') {
4339: $currentstring = $token->[2];
4340: }
4341: return $currentstring;
4342: }
4343:
4344: #-- <span> tag (end tag required)
4345: sub start_span {
4346: my ($target,$token) = @_;
4347: my $currentstring = '';
4348: if ($target eq 'web' || $target eq 'webgrade') {
4349: $currentstring = $token->[4];
4350: }
4351: return $currentstring;
4352: }
4353:
4354: sub end_span {
4355: my ($target,$token) = @_;
4356: my $currentstring = '';
4357: if ($target eq 'web' || $target eq 'webgrade') {
4358: $currentstring = $token->[2];
4359: }
4360: return $currentstring;
4361: }
4362:
4363: #-- <tbody> tag (end tag optional)
4364: sub start_tbody {
4365: my ($target,$token) = @_;
4366: my $currentstring = '';
4367: if ($target eq 'web' || $target eq 'webgrade') {
4368: $currentstring = $token->[4];
4369: }
4370: return $currentstring;
4371: }
4372:
4373: sub end_tbody {
4374: my ($target,$token) = @_;
4375: my $currentstring = '';
4376: if ($target eq 'web' || $target eq 'webgrade') {
4377: $currentstring = $token->[2];
4378: }
4379: return $currentstring;
4380: }
4381:
4382: #-- <tfoot> tag (end tag optional)
4383: sub start_tfoot {
4384: my ($target,$token) = @_;
4385: my $currentstring = '';
4386: if ($target eq 'web' || $target eq 'webgrade') {
4387: $currentstring = $token->[4];
4388: }
4389: return $currentstring;
4390: }
4391:
4392: sub end_tfoot {
4393: my ($target,$token) = @_;
4394: my $currentstring = '';
4395: if ($target eq 'web' || $target eq 'webgrade') {
4396: $currentstring = $token->[2];
4397: }
4398: return $currentstring;
4399: }
4400:
4401: #-- <thead> tag (end tag optional)
4402: sub start_thead {
4403: my ($target,$token) = @_;
4404: my $currentstring = '';
4405: if ($target eq 'web' || $target eq 'webgrade') {
4406: $currentstring = $token->[4];
4407: }
4408: return $currentstring;
4409: }
4410:
4411: sub end_thead {
4412: my ($target,$token) = @_;
4413: my $currentstring = '';
4414: if ($target eq 'web' || $target eq 'webgrade') {
4415: $currentstring = $token->[2];
4416: }
4417: return $currentstring;
4418: }
4419:
4420: #-- <var> tag
4421: sub start_var {
4422: my ($target,$token) = @_;
4423: my $currentstring = '';
4424: if ($target eq 'web' || $target eq 'webgrade') {
4425: $currentstring = $token->[4];
4426: } elsif ($target eq 'tex') {
4427: $currentstring = '\textit{';
4428: }
4429: return $currentstring;
4430: }
4431:
4432: sub end_var {
4433: my ($target,$token) = @_;
4434: my $currentstring = '';
4435: if ($target eq 'web' || $target eq 'webgrade') {
4436: $currentstring = $token->[2];
4437: } elsif ($target eq 'tex') {
4438: $currentstring = '}';
4439: }
4440: return $currentstring;
4441: }
4442:
4443: #-- <wbr> tag (end tag forbidden)
4444: sub start_wbr {
4445: my ($target,$token) = @_;
4446: my $currentstring = '';
4447: if ($target eq 'web' || $target eq 'webgrade') {
4448: $currentstring = $token->[4];
4449: }
4450: return $currentstring;
4451: }
4452:
4453: sub end_wbr {
4454: my ($target,$token) = @_;
4455: my $currentstring = '';
4456: if ($target eq 'web' || $target eq 'webgrade') {
4457: $currentstring = $token->[2];
4458: }
4459: return $currentstring;
4460: }
4461:
4462: #-- <hideweboutput> tag
4463: sub start_hideweboutput {
4464: my ($target,$token) = @_;
4465: if ($target eq 'web' || $target eq 'webgrade') {
4466: &Apache::lonxml::startredirection();
4467: }
4468: return '';
4469: }
4470:
4471: sub end_hideweboutput {
4472: my ($target,$token) = @_;
4473: my $currentstring = '';
4474: if ($target eq 'web' || $target eq 'webgrade') {
4475: $currentstring = &Apache::lonxml::endredirection();
4476: }
4477: return '';
4478: }
4479:
4480:
4481: sub image_replication {
4482: my $src = shift;
4483: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4484: #replicates eps or ps
4485: my $epssrc = my $pssrc = $src;
4486: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4487: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4488: if (not -e $epssrc && not -e $pssrc) {
4489: my $result=&Apache::lonnet::repcopy($epssrc);
4490: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4491: }
4492: return '';
4493: }
4494:
4495:
4496:
4497: sub resize_image {
4498: my ($height_param, $width_param, $scaling,
4499: $parstack, $safeeval, $depth, $cis) = @_;
4500:
4501: # First apply the scaling...
4502:
4503: $height_param = $height_param * $scaling;
4504: $width_param = $width_param * $scaling;
4505:
4506: #do we have any specified LaTeX size of the picture?
4507: my $toget='TeXwidth';
4508: if ($cis) {
4509: $toget=lc($toget);
4510: }
4511: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4512: $safeeval,$depth,$cis);
4513: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4514: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4515: $safeeval,$depth,$cis);
4516: #do we have any specified web size of the picture?
4517: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4518: $depth,1);
4519: if ($TeXwidth) {
4520: my $old_width_param=$width_param;
4521: if ($TeXwidth=~/(\d+)\s*\%/) {
4522: $width_param = $1*$env{'form.textwidth'}/100;
4523: } else {
4524: $width_param = $TeXwidth;
4525: }
4526: if ($TeXheight) {
4527: $height_param = $TeXheight;
4528: } elsif ($old_width_param) {
4529: $height_param=$TeXwidth/$old_width_param*$height_param;
4530: }
4531: } elsif ($TeXheight) {
4532: $height_param = $TeXheight;
4533: if ($height_param) {
4534: $width_param = $TeXheight/$height_param*$width_param;
4535: }
4536: } elsif ($width) {
4537: my $old_width_param=$width_param;
4538: $width_param = $width*$scaling;
4539: if ($old_width_param) {
4540: $height_param=$width_param/$old_width_param*$height_param;
4541: }
4542: }
4543: if ($width_param > $env{'form.textwidth'}) {
4544: my $old_width_param=$width_param;
4545: $width_param =0.95*$env{'form.textwidth'};
4546: if ($old_width_param) {
4547: $height_param=$width_param/$old_width_param*$height_param;
4548: }
4549: }
4550:
4551: return ($height_param, $width_param);
4552: }
4553:
4554: sub image_size {
4555: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4556:
4557: #size of image from gif/jpg/jpeg/png
4558: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4559: if (-e $ressrc) {
4560: $src = $ressrc;
4561: }
4562: my $image = Image::Magick->new;
4563: my $current_figure = $image->Read($src);
4564: my $width_param = $image->Get('width');
4565: my $height_param = $image->Get('height');
4566: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4567: undef($image);
4568:
4569: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4570: $scaling, $parstack, $safeeval,
4571: $depth, $cis);
4572:
4573: return ($height_param, $width_param);
4574: }
4575:
4576: sub image_width {
4577: my ($height, $width) = &image_size(@_);
4578: return $width;
4579: }
4580: # Not yet 100% sure this is correct in all circumstances..
4581: # due to my uncertainty about mods to image_size.
4582: #
4583: sub image_height {
4584: my ($height, $width) = &image_size(@_);
4585: return $height;
4586: }
4587:
4588: sub get_eps_image {
4589: my ($src)=@_;
4590: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4591:
4592: # In order to prevent the substitution of the alt text, we need to
4593: # be sure the orig_src file is on system now so:
4594:
4595: if (! -e $orig_src) {
4596: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4597: }
4598: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4599: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4600: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4601: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4602: &Apache::lonxml::debug("Filelocation gives: $src");
4603: if (! -e $src) {
4604: &Apache::lonxml::debug("$src does not exist");
4605: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4606: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4607: #if replication failed try to find ps file
4608: $src=~s/\.eps$/\.ps/;
4609: &Apache::lonxml::debug("Now looking for $src");
4610: #if no ps file try to replicate it.
4611: my $didrepcopy = &Apache::lonnet::repcopy($src);
4612: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4613: if ( (not -e $src) ||
4614: ($didrepcopy ne 'ok')) {
4615: &Apache::lonxml::debug("Failed to find or replicate $src");
4616:
4617: #if replication failed try to produce eps file dynamically
4618: $src=~s/\.ps$/\.eps/;
4619: my $temp_file;
4620: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4621: my $newsrc=$orig_src;
4622: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4623: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4624: print FILE ("$newsrc\n");
4625: close(FILE);
4626: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4627: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4628: if ($sext ne "") { # Put the ext. back in to uniquify.
4629: $src =~ s/\.eps$/$sext.eps/;
4630: }
4631:
4632: }
4633:
4634: }
4635: } else {
4636: # If the postscript file has spaces in its name,
4637: # LaTeX will gratuitiously vomit. Therefore
4638: # queue such files for copy with " " replaced by "_".
4639: # printout.pm will know them by their .ps or .eps extensions.
4640: my $newsrc = $orig_src;
4641: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4642: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4643: print FILE "$src\n";
4644: close FILE;
4645: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4646: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4647: }
4648: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4649: $path =~ s/ /\_/g;
4650: $file =~ s/ /\_/g;
4651: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4652: return ($path.'/',$file);
4653: }
4654:
4655: sub eps_generation {
4656: my ($src,$file,$width_param) = @_;
4657: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4658: my $temp_file = Apache::File->new('>>'.$filename);
4659: print $temp_file "$src\n";
4660: my $newsrc = $src;
4661: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4662: $newsrc=~s{/home/httpd/html/res}{};
4663: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4664: $newsrc=~s{/\./}{/};
4665: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4666: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4667: $newsrc=~s{/home/httpd/lonUsers}{};
4668: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4669: }
4670: if ($newsrc=~m{/userfiles/}) {
4671: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4672: } else {
4673: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4674: }
4675: }
4676:
4677: sub file_path {
4678: my $src=shift;
4679: my ($file,$path);
4680: if ($src =~ m!(.*)/([^/]*)$!) {
4681: $file = $2;
4682: $path = $1.'/';
4683: }
4684: return $file,$path;
4685: }
4686:
4687:
4688: sub recalc {
4689: my $argument = shift;
4690: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4691: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4692: my $value=$1;
4693: my $units=$2;
4694: if ($units eq 'cm') {
4695: $value*=10;
4696: } elsif ($units eq 'in') {
4697: $value*=25.4;
4698: } elsif ($units eq 'pc') {
4699: $value*=(25.4*12/72.27);
4700: } elsif ($units eq 'pt') {
4701: $value*=(25.4/72.27);
4702: }
4703: return $value.' mm';
4704: }
4705:
4706: sub LATEX_length {
4707: my $garbage=shift;
4708: $garbage=~s/^\s+$//;
4709: $garbage=~s/^\s+(\S.*)/$1/;#space before
4710: $garbage=~s/(.*\S)\s+$/$1/;#space after
4711: $garbage=~s/(\s)+/$1/;#only one space
4712: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4713: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4714: $garbage=~s/([^\\])\$/$1/g;#$
4715: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4716: $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;
4717: $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;
4718: $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;
4719: $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;
4720: $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;
4721: $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;
4722: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4723: #remove some other LaTeX command
4724: $garbage=~s|\\(\w+)\\|\\|g;
4725: $garbage=~s|\\(\w+)(\s*)|$2|g;
4726: $garbage=~s|\+|11|g;
4727: my $value=length($garbage);
4728: return $value;
4729: }
4730:
4731:
4732: sub align_latex_image {
4733: my ($align, $latex_rendering, $image, $width, $height) = @_;
4734: my $currentstring; # The 1/2 wrapped image.
4735: my $closure; # The closure of the wrappage.
4736:
4737: # if it's none just return it back
4738: if ($latex_rendering eq 'none') {
4739: return ($image,'');
4740: }
4741:
4742: # If there's an alignment specification we need to honor it here.
4743: # For the horizontal alignments, we will also honor the
4744: # value of the latex specfication. The default is parbox,
4745: # and that's used for illegal values too.
4746: #
4747: # Even though we set a default alignment value, the user
4748: # could have given us an illegal value. In that case we
4749: # just use the default alignment of bottom..
4750: $currentstring = '';
4751: if ($align eq "top") {
4752: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4753: $closure = '}';
4754: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4755: my $offset = $height/2;
4756: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4757: $closure = '}';
4758: } elsif ($align eq "left") {
4759: if ($latex_rendering eq "parpic") {
4760: $currentstring .= '\parpic[l]{'.$image;
4761: $closure = '}';
4762: } elsif ($latex_rendering eq "parbox") {
4763: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4764: .$image;
4765: $closure = '\end{minipage}';
4766: } elsif ($latex_rendering eq "wrapfigure"
4767: || $latex_rendering ne 'none') { # wrapfig render
4768: $currentstring .=
4769: '\begin{wrapfigure}{l}{'.$width.'mm}'
4770: .'\scalebox{1.0}{'.$image;
4771: $closure = '}\end{wrapfigure}';
4772: }
4773: } elsif ($align eq "right") {
4774: if ($latex_rendering eq "parpic") {
4775: $currentstring .= '\parpic[r]{'.$image;
4776: $closure = '}';
4777: } elsif ($latex_rendering eq "parbox") {
4778: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4779: .$image;
4780: $closure = '\end{minipage}';
4781: } elsif ($latex_rendering eq "wrapfigure"
4782: || $latex_rendering ne 'none') { # wrapfig render
4783: $currentstring .=
4784: '\begin{wrapfigure}{r}{'.$width.'mm}'
4785: .'\scalebox{1.0}{'.$image;
4786: $closure = '}\end{wrapfigure}';
4787: }
4788: } else { # Bottom is also default.
4789: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4790: $currentstring .= "{$image";
4791: $closure = '}';
4792: }
4793: return ($currentstring, $closure);
4794: }
4795:
4796:
4797: sub is_inside_of {
4798: my ($tagstack, $tag) = @_;
4799: my @stack = @$tagstack;
4800: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4801: if ($stack[$i] eq $tag) {
4802: return 1;
4803: }
4804: }
4805: return 0;
4806: }
4807:
4808:
4809: #
4810: # This sub provides the typical LaTeX prefix matter for tex output:
4811: #
4812: sub latex_header {
4813: my ($mode) = @_;
4814: my $currentstring = '';
4815:
4816: $currentstring .=
4817: "\n% &Apache::lonxml::londefdef \n" .
4818: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4819: if (($env{'form.latex_type'}=~'batchmode') ||
4820: (!$env{'request.role.adv'}) ||
4821: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4822: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4823: '\renewcommand{\deg}{$^{\circ}$}'.
4824: '\usepackage{multirow}'.
4825: '\usepackage{longtable}'.
4826: '\usepackage{textcomp}'.
4827: '\usepackage{makeidx}'.
4828: '\usepackage[dvips]{graphicx}'.
4829: '\usepackage{wrapfig}'.
4830: '\usepackage{picins}'.
4831: '\usepackage[T1]{fontenc}'."\n".
4832: '\usepackage{lmodern}'."\n".
4833: '\usepackage[postscript]{ucs}'."\n".
4834: '\usepackage[utf8x]{inputenc}'."\n".
4835: '\usepackage{pifont}' ."\n".
4836: '\usepackage{latexsym}'."\n".
4837: '\usepackage{epsfig}'.
4838: "\\usepackage{xtab}\n".
4839: "\\usepackage{tabularx}\n".
4840: "\\usepackage{booktabs}\n".
4841: "\\usepackage{array}\n".
4842: "\\usepackage{colortbl}\n".
4843: "\\usepackage{xcolor}\n".
4844: '\usepackage{calc}'.
4845: '\usepackage{amsmath}'.
4846: '\usepackage{amssymb}'.
4847: '\usepackage{amsfonts}'.
4848: '\usepackage{amsthm}'.
4849: '\usepackage{amscd}'
4850: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4851: '\usepackage[T1]{fontenc}'."\n".
4852: '\usepackage{lmodern}'."\n".
4853: '\usepackage[postscript]{ucs}'."\n".
4854: '\usepackage[utf8x]{inputenc}'."\n".
4855: '\usepackage{pifont}' . "\n";
4856:
4857: if($env{'form.pdfFormFields'} eq 'yes') {
4858: $currentstring .= '\usepackage{hyperref}'.
4859: '\usepackage{eforms}'.
4860: '\usepackage{tabularx}';
4861: }
4862:
4863: $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}}'.
4864: '\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}}';
4865: $currentstring .= '\begin{document}';
4866:
4867: return $currentstring;
4868:
4869: }
4870:
4871: =pod
4872:
4873: =head1 NAME
4874:
4875: Apache::londefdef.pm
4876:
4877: =head1 SYNOPSIS
4878:
4879: Tags Default Definition Module
4880:
4881: This is part of the LearningOnline Network with CAPA project
4882: described at http://www.lon-capa.org.
4883:
4884:
4885: =head1 NOTABLE SUBROUTINES
4886:
4887: =over
4888:
4889: =item start_hideweboutput()
4890:
4891: =item end_hideweboutput()
4892:
4893: =item image_replication()
4894:
4895: =item resize_image()
4896:
4897: Get correct sizing parameter for an image given
4898: it's initial ht. and wid. This allows sizing of
4899: images that are generated on-the-fly (e.g. gnuplot)
4900: as well as serving as a utility for image_size.
4901:
4902: Parameter:
4903: height_param
4904: width_param - Initial picture dimensions.
4905: scaling - A scale factor.
4906: parstack, - the current stack of tag attributes
4907: from the xml parser
4908: safeeval, - pointer to the safespace
4909: depth, - from what level in the stack to look for attributes
4910: (assumes -1 if unspecified)
4911: cis - look for attrubutes case insensitively
4912: (assumes false)
4913:
4914: Returns:
4915: height, width - new dimensions.
4916:
4917: =item image_size()
4918:
4919: =item image_width()
4920:
4921: =item image_height()
4922:
4923: =item get_eps_image()
4924:
4925: =item eps_generation()
4926:
4927: =item file_path()
4928:
4929: =item recalc()
4930:
4931: Converts a measurement in to mm from any of
4932: the other valid LaTeX units of measure.
4933: If the units of measure are missing from the
4934: parameter, it is assumed to be in and returned
4935: with mm units of measure
4936:
4937: =item LATEX_length()
4938:
4939: =item align_latex_image()
4940:
4941: Wrap image 'stuff' inside of the LaTeX required to implement
4942: alignment:
4943: align_tex_image(align, latex_rendering, image)
4944: Where:
4945: align - The HTML alignment specification.
4946: latex_rendering - rendering hint for latex.
4947: image - The LaTeX needed to insert the image itsef.
4948: width,height - dimensions of the image.
4949: Returns:
4950: The 1/2 wrapped image and the stuff required to close the
4951: wrappage. This allows e.g. randomlabel to insert more stuff
4952: into the closure.
4953:
4954:
4955: =item is_inside_of($tagstack, $tag)
4956: This sub returns true if the current state of Xml processing is inside of the tag.
4957: Parameters:
4958: tagstack - The tagstack from the parser.
4959: tag - The tag (without the <>'s.).
4960: Sample usage:
4961: if (is_inside_of($tagstack "table")) {
4962: I'm in a table....
4963: }
4964:
4965:
4966:
4967: =back
4968:
4969: =cut
4970:
4971:
4972: 1;
4973: __END__
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