1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.398 2009/01/20 12:01:00 foxr 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: $currentstring .=
180: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
181: if (($env{'form.latex_type'}=~'batchmode') ||
182: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
183: $currentstring .= '\newcommand{\keephidden}[1]{}'.
184: '\renewcommand{\deg}{$^{\circ}$}'.
185: '\usepackage{multirow}'.
186: '\usepackage{longtable}'.
187: '\usepackage{textcomp}'.
188: '\usepackage{makeidx}'.
189: '\usepackage[dvips]{graphicx}'.
190: '\usepackage{wrapfig}'.
191: '\usepackage{picins}'.
192: '\usepackage[T1]{fontenc}'."\n".
193: '\usepackage{lmodern}'."\n".
194: '\usepackage[postscript]{ucs}'."\n".
195: '\usepackage[utf8x]{inputenc}'."\n".
196: '\usepackage{pifont}' ."\n".
197: '\usepackage{latexsym}'."\n".
198: '\usepackage{epsfig}'.
199: "\\usepackage{xtab}\n".
200: "\\usepackage{tabularx}\n".
201: "\\usepackage{booktabs}\n".
202: "\\usepackage{array}\n".
203: "\\usepackage{colortbl}\n".
204: "\\usepackage{xcolor}\n".
205: '\usepackage{calc}'.
206: '\usepackage{amsmath}'.
207: '\usepackage{amssymb}'.
208: '\usepackage{amsfonts}'.
209: '\usepackage{amsthm}'.
210: '\usepackage{amscd}';
211:
212: if($env{'form.pdfFormFields'} eq 'yes') {
213: $currentstring .= '\usepackage{hyperref}'.
214: '\usepackage{eforms}'.
215: '\usepackage{tabularx}';
216: }
217:
218: $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}}'.
219: '\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}}';
220: }
221: return $currentstring;
222: }
223:
224: sub end_html {
225: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
226: my $currentstring = '';
227: if ($target eq 'web' || $target eq 'webgrade') {
228: # end_body takes care of the </html>
229: }
230: return $currentstring;
231: }
232:
233: #-- <head> tag (end tag optional)
234: sub start_head {
235: my ($target,$token) = @_;
236: my $currentstring = '';
237: if ($target eq 'web' || $target eq 'webgrade') {
238: &Apache::lonxml::startredirection();
239: }
240: return $currentstring;
241: }
242:
243: sub end_head {
244: my ($target,$token) = @_;
245: my $currentstring = '';
246: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
247: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
248: # in case there is a </head> but no <head>
249: if ($Apache::lonxml::redirection) {
250: $Apache::londefdef::head = &Apache::lonxml::endredirection();
251: }
252: }
253: return $currentstring;
254: }
255:
256: #-- <map> tag (end tag required)
257: sub start_map {
258: my ($target,$token) = @_;
259: my $currentstring = '';
260: if ($target eq 'web' || $target eq 'webgrade') {
261: $currentstring = $token->[4];
262: }
263: return $currentstring;
264: }
265:
266: sub end_map {
267: my ($target,$token) = @_;
268: my $currentstring = '';
269: if ($target eq 'web' || $target eq 'webgrade') {
270: $currentstring = $token->[2];
271: }
272: return $currentstring;
273: }
274:
275: #-- <select> tag (end tag required)
276: sub start_select {
277: my ($target,$token) = @_;
278: my $currentstring = '';
279: if ($target eq 'web' || $target eq 'webgrade') {
280: $currentstring = $token->[4];
281: } elsif ($target eq 'tex') {
282: $Apache::londefdef::select=0;
283: }
284: return $currentstring;
285: }
286:
287: sub end_select {
288: my ($target,$token) = @_;
289: my $currentstring = '';
290: if ($target eq 'web' || $target eq 'webgrade') {
291: $currentstring = $token->[2];
292: }
293: return $currentstring;
294: }
295:
296: #-- <option> tag (end tag optional)
297: sub start_option {
298: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
299: my $currentstring = '';
300: if ($target eq 'web' || $target eq 'webgrade') {
301: $currentstring = $token->[4];
302: } elsif ($target eq 'tex') {
303: $Apache::londefdef::select++;
304: if ($Apache::londefdef::select == 1) {
305: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
306: } else {
307: $currentstring='\keephidden{';
308: }
309: }
310: return $currentstring;
311: }
312:
313: sub end_option {
314: my ($target,$token) = @_;
315: my $currentstring = '';
316: if ($target eq 'web' || $target eq 'webgrade') {
317: $currentstring = $token->[2];
318: } elsif ($target eq 'tex') {
319: $currentstring='}';
320: }
321: return $currentstring;
322: }
323:
324: #-- <input> tag (end tag forbidden)
325: sub start_input {
326: my ($target,$token) = @_;
327: my $currentstring = '';
328: if ($target eq 'web' || $target eq 'webgrade') {
329: $currentstring = $token->[4];
330: }
331: return $currentstring;
332: }
333:
334: sub end_input {
335: my ($target,$token) = @_;
336: my $currentstring = '';
337: if ($target eq 'web' || $target eq 'webgrade') {
338: $currentstring = $token->[2];
339: }
340: return $currentstring;
341: }
342:
343: #-- <textarea> tag (end tag required)
344: sub start_textarea {
345: my ($target,$token) = @_;
346: my $currentstring = '';
347: if ($target eq 'web' || $target eq 'webgrade') {
348: $currentstring = $token->[4];
349: }
350: return $currentstring;
351: }
352:
353: sub end_textarea {
354: my ($target,$token) = @_;
355: my $currentstring = '';
356: if ($target eq 'web' || $target eq 'webgrade') {
357: $currentstring = $token->[2];
358: }
359: return $currentstring;
360: }
361:
362: #-- <form> tag (end tag required)
363: sub start_form {
364: my ($target,$token) = @_;
365: my $currentstring = '';
366: if ($target eq 'web' || $target eq 'webgrade') {
367: $currentstring = $token->[4];
368: }
369: return $currentstring;
370: }
371:
372: sub end_form {
373: my ($target,$token) = @_;
374: my $currentstring = '';
375: if ($target eq 'web' || $target eq 'webgrade') {
376: $currentstring = $token->[2];
377: }
378: return $currentstring;
379: }
380:
381: #-- <title> tag (end tag required)
382: sub start_title {
383: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
384: my $currentstring = '';
385: if ($target eq 'web' || $target eq 'webgrade') {
386: $Apache::londefdef::title =
387: &Apache::lonxml::get_all_text('/title',$parser,$style);
388: } elsif ($target eq 'tex') {
389: $currentstring .= '\keephidden{Title of the document: '
390: }
391: if ($target eq 'meta') {
392: $currentstring='<title>';
393: &start_output($target);
394: }
395: return $currentstring;
396: }
397:
398: sub end_title {
399: my ($target,$token) = @_;
400: my $currentstring = '';
401: if ($target eq 'web' || $target eq 'webgrade') {
402: # start_title takes care of swallowing the title
403: } elsif ($target eq 'tex') {
404: $currentstring .= '}';
405: }
406: if ($target eq 'meta') {
407: &end_output($target);
408: $currentstring='</title>';
409: }
410: return $currentstring;
411: }
412:
413: #-- <meta> tag (end tag forbidden)
414: sub start_meta {
415: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
416: my $currentstring = '';
417: if ($target eq 'web' || $target eq 'webgrade') {
418: my $args='';
419: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
420: if ($args eq '') {
421: &Apache::lonxml::get_all_text("/meta",$parser,$style);
422: } else {
423: $currentstring = $token->[4];
424: }
425: } elsif ($target eq 'meta') {
426: unless (&Apache::lonxml::get_param
427: ('http-equiv',$parstack,$safeeval,undef,1)) {
428: my $name=$token->[2]->{'name'};
429: $name=~tr/A-Z/a-z/;
430: $name=~s/\s/\_/gs;
431: $name=~s/\W//gs;
432: if ($name) {
433: $currentstring='<'.$name;
434: my $display=&Apache::lonxml::get_param
435: ('display',$parstack,$safeeval,undef,1);
436: if ($display) {
437: $display=~s/\"/\'/g;
438: $currentstring.=' display="'.$display.'"';
439: }
440: $currentstring.='>'.
441: &Apache::lonxml::get_param
442: ('content',$parstack,$safeeval,undef,1).
443: '</'.$name.'>';
444: }
445: my $display=&Apache::lonxml::get_param
446: ('display',$parstack,$safeeval,undef,1);
447: if ($display) {
448: $display=&HTML::Entities::encode($display,'<>&"');
449: $currentstring.='<'.$name.'.display>'.$display.
450: '</'.$name.'.display>';
451: }
452: }
453: } elsif ($target eq 'tex') {
454: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
455: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
456: if ((not defined $content) && (not defined $name)) {
457: &Apache::lonxml::startredirection();
458: }
459: } elsif ($target eq 'edit') {
460: $currentstring .= &Apache::edit::tag_start($target,$token);
461: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
462: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
463: $currentstring .= &Apache::edit::end_row();
464: } elsif ($target eq 'modified') {
465: my $constructtag =
466: &Apache::edit::get_new_args($token,$parstack,$safeeval,
467: 'name','content');
468: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
469: }
470: return $currentstring;
471: }
472:
473: sub end_meta {
474: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
475: my $currentstring = '';
476: if ($target eq 'web' || $target eq 'webgrade') {
477: my $args='';
478: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
479: if ($args ne '') {
480: $currentstring = $token->[4];
481: }
482: } elsif ($target eq 'tex') {
483: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
484: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
485: if ((not defined $content) && (not defined $name)) {
486: &Apache::lonxml::endredirection();
487: }
488: }
489: return $currentstring;
490: }
491:
492: sub insert_meta {
493: return '
494: <meta />';
495: }
496:
497: # accessrule
498: sub start_accessrule {
499: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
500: my $currentstring = '';
501: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
502: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
503: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
504: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
505:
506: my ($dom,$crs,$sec,$separator);
507: if ($type eq 'user') {
508: ($dom,$crs,$sec)=split(m{/},$realm);
509: $crs = &LONCAPA::clean_username($crs);
510: $separator = '/';
511: } else {
512: ($dom,$crs,$sec)=split(/\_/,$realm);
513: $crs = &LONCAPA::clean_courseid($crs);
514: $separator = '_';
515: }
516: $dom = &LONCAPA::clean_domain($dom);
517:
518: $sec =~s/\W//;
519: $realm = $dom;
520: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
521: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
522: $role=~s/\W//g;
523:
524: if ($target eq 'web') {
525: my $args='';
526: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
527: if ($args eq '') {
528: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
529: } else {
530: $currentstring = $token->[4];
531: }
532: }
533: if ($target eq 'meta') {
534: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
535: }
536: return $currentstring;
537: }
538:
539: sub end_accessrule {
540: my ($target,$token,$tagstack,$parstack,$parser) = @_;
541: my $currentstring = '';
542: if ($target eq 'web') {
543: my $args='';
544: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
545: if ($args ne '') {
546: $currentstring = $token->[4];
547: }
548: }
549: return $currentstring;
550: }
551:
552: sub generate_css_links {
553: my $links;
554: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
555: if ($css_href =~ /\S/) {
556: &Apache::lonxml::extlink($css_href);
557: $links .=
558: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
559: }
560: return $links;
561: }
562:
563: #-- <body> tag (end tag required)
564: sub start_body {
565: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
566: my $currentstring = '';
567:
568: if ($target eq 'web' || $target eq 'webgrade') {
569: if ($Apache::lonhomework::parsing_a_problem) {
570: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
571: return '';
572: }
573:
574: if (&is_inside_of($tagstack, "head")) {
575: &end_head(@_);
576: }
577:
578: my $extra_head = &generate_css_links();
579:
580: $currentstring =
581: &Apache::loncommon::start_page($Apache::londefdef::title,
582: $Apache::londefdef::head
583: .$extra_head,
584: {'add_entries' => $token->[2],
585: 'no_title' => 1,
586: 'force_register' => 1});
587:
588: if ($env{'request.state'} ne 'published') {
589: $currentstring.=&Apache::lonmenu::constspaceform();
590: $currentstring.=&Apache::londefdef::edit_controls();
591: }
592: $currentstring.=&Apache::lonxml::message_location();
593: } elsif ($target eq 'tex') {
594: $currentstring = '\begin{document}';
595: }
596: return $currentstring;
597: }
598:
599: sub edit_controls {
600: my $result .= '
601: <form method="post">
602: <div class="LC_edit_problem_header">
603: <div class="LC_edit_problem_header_row1">'.
604: &Apache::lonxml::renderingoptions().'
605: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
606: </div>
607: <div class="LC_edit_problem_header_edit_row"><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" /></div></div>
608: </form>
609: <br />';
610: return $result;
611: }
612:
613: sub end_body {
614: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
615: my $currentstring = &end_p(); # Close off unclosed <p>
616: if ($target eq 'web' || $target eq 'webgrade') {
617: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
618: } elsif ($target eq 'tex') {
619: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
620: }
621: return $currentstring;
622: }
623:
624: # \begin{center} causes a new paragprah spacing that looks odd inside
625: # of a table cell. Same at the end of a \center but with a slightly
626: # larger space .. hence center_correction and center_end_correction.
627: #
628: sub center_correction { return '\vspace*{-6 mm}'; }
629: sub center_end_correction { return '\vspace*{-7 mm}'; }
630:
631: #-- <center> tag (end tag required)
632: sub start_center {
633: my ($target,$token,$tagstack) = @_;
634: my $currentstring = &end_p(); # Close off any prior para.
635: if ($target eq 'web' || $target eq 'webgrade') {
636: $currentstring .= $token->[4];
637: } elsif ($target eq 'tex') {
638: if (&is_inside_of($tagstack, "table")) {
639: $currentstring .= ¢er_correction();
640: }
641: $currentstring .= '\begin{center}';
642: }
643: return $currentstring;
644: }
645:
646: sub end_center {
647: my ($target,$token,$tagstack) = @_;
648: my $currentstring = '';
649: if ($target eq 'web' || $target eq 'webgrade') {
650: $currentstring = $token->[2];
651: } elsif ($target eq 'tex') {
652: $currentstring = '\end{center}';
653: if (&is_inside_of($tagstack, "table")) {
654: $currentstring .= ¢er_end_correction();
655: }
656: }
657: return $currentstring;
658: }
659:
660: #-- <b> tag (end tag required)
661: # NOTE: In TeX mode disables internal <p>
662: sub start_b {
663: my ($target,$token) = @_;
664: my $currentstring = '';
665: if ($target eq 'web' || $target eq 'webgrade') {
666: $currentstring = $token->[4];
667: } elsif ($target eq 'tex') {
668: &disable_para();
669: $currentstring .= '\textbf{';
670: }
671: return $currentstring;
672: }
673:
674: sub end_b {
675: my ($target,$token) = @_;
676: my $currentstring = '';
677: if ($target eq 'web' || $target eq 'webgrade') {
678: $currentstring = $token->[2];
679: } elsif ($target eq 'tex') {
680: &enable_para();
681: $currentstring = '}';
682: }
683: return $currentstring;
684: }
685:
686: #-- <strong> tag (end tag required)
687: # NOTE: in TeX mode disables internal <p>
688: sub start_strong {
689: my ($target,$token) = @_;
690: my $currentstring = '';
691: if ($target eq 'web' || $target eq 'webgrade') {
692: $currentstring = $token->[4];
693: } elsif ($target eq 'tex') {
694: &disable_para();
695: $currentstring = '\textbf{';
696: }
697: return $currentstring;
698: }
699:
700: sub end_strong {
701: my ($target,$token) = @_;
702: my $currentstring = '';
703: if ($target eq 'web' || $target eq 'webgrade') {
704: $currentstring = $token->[2];
705: } elsif ($target eq 'tex') {
706: &enable_para();
707: $currentstring = '}';
708: }
709: return $currentstring;
710: }
711:
712: #-- <h1> tag (end tag required)
713: sub start_h1 {
714: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
715: my $currentstring = &end_p(); # Close off any prior para.
716: if ($target eq 'web' || $target eq 'webgrade') {
717: $currentstring .= $token->[4];
718: } elsif ($target eq 'tex') {
719: my $pre;
720: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
721: if ($align eq 'center') {
722: $pre='\begin{center}';
723: } elsif ($align eq 'left') {
724: $pre='\rlap{';
725: } elsif ($align eq 'right') {
726: $pre=' \hfill \llap{';
727: }
728: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
729: if (not defined $TeXsize) {$TeXsize="large";}
730: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
731: } elsif ($target eq 'meta') {
732: $currentstring.='<subject>';
733: &start_output($target);
734: }
735: return $currentstring;
736: }
737:
738: sub end_h1 {
739: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
740: my $currentstring = '';
741: if ($target eq 'web' || $target eq 'webgrade') {
742: $currentstring .= $token->[2];
743: } elsif ($target eq 'tex') {
744: my $post='\vskip 0 mm ';
745: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
746: if ($align eq 'center') {
747: $post='\end{center}';
748: } elsif ($align eq 'left') {
749: $post='} \hfill'.'\vskip 0 mm ';
750: } elsif ($align eq 'right') {
751: $post='}'.'\vskip 0 mm ';
752: }
753: $currentstring .= '}}'.$post;
754: } elsif ($target eq 'meta') {
755: &end_output($target);
756: $currentstring='</subject>';
757: }
758: return $currentstring;
759: }
760:
761: #-- <h2> tag
762: sub start_h2 {
763: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
764: my $currentstring = &end_p(); # Close off any prior para.
765: if ($target eq 'web' || $target eq 'webgrade') {
766: $currentstring .= $token->[4];
767: } elsif ($target eq 'tex') {
768: my $pre;
769: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
770: if ($align eq 'center') {
771: $pre='\begin{center}';
772: } elsif ($align eq 'left') {
773: $pre='\rlap{';
774: } elsif ($align eq 'right') {
775: $pre=' \hfill \llap{';
776: }
777: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
778: if (not defined $TeXsize) {$TeXsize="large";}
779: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
780: }
781: return $currentstring;
782: }
783:
784: sub end_h2 {
785: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
786: my $currentstring = '';
787: if ($target eq 'web' || $target eq 'webgrade') {
788: $currentstring .= $token->[2];
789: } elsif ($target eq 'tex') {
790: my $post='\vskip 0 mm ';
791: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
792: if ($align eq 'center') {
793: $post='\end{center}';
794: } elsif ($align eq 'left') {
795: $post='} \hfill'.'\vskip 0 mm ';
796: } elsif ($align eq 'right') {
797: $post='}'.'\vskip 0 mm ';
798: }
799: $currentstring .= '}}'.$post;
800: }
801: return $currentstring;
802: }
803:
804: #-- <h3> tag
805: sub start_h3 {
806: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
807: my $currentstring = &end_p(); # Close off any prior para.
808: if ($target eq 'web' || $target eq 'webgrade') {
809: $currentstring .= $token->[4];
810: } elsif ($target eq 'tex') {
811: my $pre;
812: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
813: if ($align eq 'center') {
814: $pre='\begin{center}';
815: } elsif ($align eq 'left') {
816: $pre='\rlap{';
817: } elsif ($align eq 'right') {
818: $pre=' \hfill \llap{';
819: }
820: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
821: if (not defined $TeXsize) {$TeXsize="large";}
822: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
823: }
824: return $currentstring;
825: }
826:
827: sub end_h3 {
828: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
829: my $currentstring = '';
830: if ($target eq 'web' || $target eq 'webgrade') {
831: $currentstring .= $token->[2];
832: } elsif ($target eq 'tex') {
833: my $post='\vskip 0 mm ';
834: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
835: if ($align eq 'center') {
836: $post='\end{center}';
837: } elsif ($align eq 'left') {
838: $post='} \hfill'.'\vskip 0 mm ';
839: } elsif ($align eq 'right') {
840: $post='}'.'\vskip 0 mm ';
841: }
842: $currentstring .= '}}'.$post;
843: }
844: return $currentstring;
845: }
846:
847: #-- <h4> tag
848: sub start_h4 {
849: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
850: my $currentstring = &end_p(); # Close off any prior para.
851: if ($target eq 'web' || $target eq 'webgrade') {
852: $currentstring .= $token->[4];
853: } elsif ($target eq 'tex') {
854: my $pre;
855: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
856: if ($align eq 'center') {
857: $pre='\begin{center}';
858: } elsif ($align eq 'left') {
859: $pre='\rlap{';
860: } elsif ($align eq 'right') {
861: $pre=' \hfill \llap{';
862: }
863: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
864: if (not defined $TeXsize) {$TeXsize="large";}
865: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
866: }
867: return $currentstring;
868: }
869:
870: sub end_h4 {
871: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
872: my $currentstring = '';
873: if ($target eq 'web' || $target eq 'webgrade') {
874: $currentstring .= $token->[2];
875: } elsif ($target eq 'tex') {
876: my $post='\vskip 0 mm ';
877: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
878: if ($align eq 'center') {
879: $post='\end{center}';
880: } elsif ($align eq 'left') {
881: $post='} \hfill'.'\vskip 0 mm ';
882: } elsif ($align eq 'right') {
883: $post='}'.'\vskip 0 mm ';
884: }
885: $currentstring .= '}}'.$post;
886: }
887: return $currentstring;
888: }
889:
890: #-- <h5> tag
891: sub start_h5 {
892: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
893: my $currentstring = &end_p(); # Close off any prior paras.
894: if ($target eq 'web' || $target eq 'webgrade') {
895: $currentstring .= $token->[4];
896: } elsif ($target eq 'tex') {
897: my $pre;
898: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
899: if ($align eq 'center') {
900: $pre='\begin{center}';
901: } elsif ($align eq 'left') {
902: $pre='\rlap{';
903: } elsif ($align eq 'right') {
904: $pre=' \hfill \llap{';
905: }
906: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
907: if (not defined $TeXsize) {$TeXsize="large";}
908: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
909: }
910: return $currentstring;
911: }
912:
913: sub end_h5 {
914: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
915: my $currentstring = '';
916: if ($target eq 'web' || $target eq 'webgrade') {
917: $currentstring .= $token->[2];
918: } elsif ($target eq 'tex') {
919: my $post='\vskip 0 mm ';
920: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
921: if ($align eq 'center') {
922: $post='\end{center}';
923: } elsif ($align eq 'left') {
924: $post='} \hfill'.'\vskip 0 mm ';
925: } elsif ($align eq 'right') {
926: $post='}'.'\vskip 0 mm ';
927: }
928: $currentstring .= '}}'.$post;
929: }
930: return $currentstring;
931: }
932:
933: #-- <h6> tag
934: sub start_h6 {
935: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
936: my $currentstring = &end_p(); # Close off any prior paras.
937: if ($target eq 'web' || $target eq 'webgrade') {
938: $currentstring .= $token->[4];
939: } elsif ($target eq 'tex') {
940: my $pre;
941: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
942: if ($align eq 'center') {
943: $pre='\begin{center}';
944: } elsif ($align eq 'left') {
945: $pre='\rlap{';
946: } elsif ($align eq 'right') {
947: $pre=' \hfill \llap{';
948: }
949: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
950: if (not defined $TeXsize) {$TeXsize="large";}
951: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
952: }
953: return $currentstring;
954: }
955:
956: sub end_h6 {
957: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
958: my $currentstring = '';
959: if ($target eq 'web' || $target eq 'webgrade') {
960: $currentstring .= $token->[2];
961: } elsif ($target eq 'tex') {
962: my $post='\vskip 0 mm ';
963: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
964: if ($align eq 'center') {
965: $post='\end{center}';
966: } elsif ($align eq 'left') {
967: $post='} \hfill'.'\vskip 0 mm ';
968: } elsif ($align eq 'right') {
969: $post='}'.'\vskip 0 mm ';
970: }
971: $currentstring .= '}}'.$post;
972: }
973: return $currentstring;
974: }
975:
976: #--- <cite> tag (end tag required)
977: sub start_cite {
978: my ($target,$token) = @_;
979: my $currentstring = '';
980: if ($target eq 'web' || $target eq 'webgrade') {
981: $currentstring .= $token->[4];
982: } elsif ($target eq 'tex') {
983: $currentstring .= '\textit{';
984: }
985: return $currentstring;
986: }
987:
988: sub end_cite {
989: my ($target,$token) = @_;
990: my $currentstring = '';
991: if ($target eq 'web' || $target eq 'webgrade') {
992: $currentstring .= $token->[2];
993: } elsif ($target eq 'tex') {
994: $currentstring .= '}';
995: }
996: return $currentstring;
997: }
998:
999: #-- <i> tag (end tag required)
1000: sub start_i {
1001: my ($target,$token) = @_;
1002: my $currentstring = '';
1003: if ($target eq 'web' || $target eq 'webgrade') {
1004: $currentstring .= $token->[4];
1005: } elsif ($target eq 'tex') {
1006: $currentstring .= '\textit{';
1007: }
1008: return $currentstring;
1009: }
1010:
1011: sub end_i {
1012: my ($target,$token) = @_;
1013: my $currentstring = '';
1014: if ($target eq 'web' || $target eq 'webgrade') {
1015: $currentstring .= $token->[2];
1016: } elsif ($target eq 'tex') {
1017: $currentstring .= '}';
1018: }
1019: return $currentstring;
1020: }
1021:
1022: #-- <address> tag (end tag required)
1023: sub start_address {
1024: my ($target,$token) = @_;
1025: my $currentstring = '';
1026: if ($target eq 'web' || $target eq 'webgrade') {
1027: $currentstring .= $token->[4];
1028: } elsif ($target eq 'tex') {
1029: $currentstring .= '\textit{';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: sub end_address {
1035: my ($target,$token) = @_;
1036: my $currentstring = '';
1037: if ($target eq 'web' || $target eq 'webgrade') {
1038: $currentstring .= $token->[2];
1039: } elsif ($target eq 'tex') {
1040: $currentstring .= '}';
1041: }
1042: return $currentstring;
1043: }
1044:
1045: #-- <dfn> tag (end tag required)
1046: sub start_dfn {
1047: my ($target,$token) = @_;
1048: my $currentstring = '';
1049: if ($target eq 'web' || $target eq 'webgrade') {
1050: $currentstring .= $token->[4];
1051: } elsif ($target eq 'tex') {
1052: $currentstring .= '\textit{';
1053: }
1054: return $currentstring;
1055: }
1056:
1057: sub end_dfn {
1058: my ($target,$token) = @_;
1059: my $currentstring = '';
1060: if ($target eq 'web' || $target eq 'webgrade') {
1061: $currentstring .= $token->[2];
1062: } elsif ($target eq 'tex') {
1063: $currentstring .= '}';
1064: }
1065: return $currentstring;
1066: }
1067:
1068: #-- <tt> tag (end tag required)
1069: sub start_tt {
1070: my ($target,$token) = @_;
1071: my $currentstring = '';
1072: if ($target eq 'web' || $target eq 'webgrade') {
1073: $currentstring .= $token->[4];
1074: } elsif ($target eq 'tex') {
1075: $currentstring .= '\texttt{';
1076: }
1077: return $currentstring;
1078: }
1079:
1080: sub end_tt {
1081: my ($target,$token) = @_;
1082: my $currentstring = '';
1083: if ($target eq 'web' || $target eq 'webgrade') {
1084: $currentstring .= $token->[2];
1085: } elsif ($target eq 'tex') {
1086: $currentstring .= '}';
1087: }
1088: return $currentstring;
1089: }
1090:
1091: #-- <kbd> tag (end tag required)
1092: sub start_kbd {
1093: my ($target,$token) = @_;
1094: my $currentstring = '';
1095: if ($target eq 'web' || $target eq 'webgrade') {
1096: $currentstring .= $token->[4];
1097: } elsif ($target eq 'tex') {
1098: $currentstring .= '\texttt{';
1099: }
1100: return $currentstring;
1101: }
1102:
1103: sub end_kbd {
1104: my ($target,$token) = @_;
1105: my $currentstring = '';
1106: if ($target eq 'web' || $target eq 'webgrade') {
1107: $currentstring .= $token->[2];
1108: } elsif ($target eq 'tex') {
1109: $currentstring .= '}';
1110: }
1111: return $currentstring;
1112: }
1113:
1114: #-- <code> tag (end tag required)
1115: sub start_code {
1116: my ($target,$token) = @_;
1117: my $currentstring = '';
1118: if ($target eq 'web' || $target eq 'webgrade') {
1119: $currentstring .= $token->[4];
1120: } elsif ($target eq 'tex') {
1121: $currentstring .= '\texttt{';
1122: }
1123: return $currentstring;
1124: }
1125:
1126: sub end_code {
1127: my ($target,$token) = @_;
1128: my $currentstring = '';
1129: if ($target eq 'web' || $target eq 'webgrade') {
1130: $currentstring .= $token->[2];
1131: } elsif ($target eq 'tex') {
1132: $currentstring .= '}';
1133: }
1134: return $currentstring;
1135: }
1136:
1137: #-- <em> tag (end tag required)
1138: sub start_em {
1139: my ($target,$token) = @_;
1140: my $currentstring = '';
1141: if ($target eq 'web' || $target eq 'webgrade') {
1142: $currentstring .= $token->[4];
1143: } elsif ($target eq 'tex') {
1144: $currentstring .= '\emph{';
1145: }
1146: return $currentstring;
1147: }
1148:
1149: sub end_em {
1150: my ($target,$token) = @_;
1151: my $currentstring = '';
1152: if ($target eq 'web' || $target eq 'webgrade') {
1153: $currentstring .= $token->[2];
1154: } elsif ($target eq 'tex') {
1155: $currentstring .= '}';
1156: }
1157: return $currentstring;
1158: }
1159:
1160: #-- <q> tag (end tag required)
1161: sub start_q {
1162: my ($target,$token) = @_;
1163: my $currentstring = '';
1164: if ($target eq 'web' || $target eq 'webgrade') {
1165: $currentstring .= $token->[4];
1166: } elsif ($target eq 'tex') {
1167: $currentstring .= '\emph{';
1168: }
1169: return $currentstring;
1170: }
1171:
1172: sub end_q {
1173: my ($target,$token) = @_;
1174: my $currentstring = '';
1175: if ($target eq 'web' || $target eq 'webgrade') {
1176: $currentstring .= $token->[2];
1177: } elsif ($target eq 'tex') {
1178: $currentstring .= '}';
1179: }
1180: return $currentstring;
1181: }
1182:
1183: # <p> is a bit strange since it does not require a closing </p>
1184: # However in latex, we must often output closing stuff to end
1185: # environments and {}'s etc. Therefore we do all the work
1186: # of figuring out the ending strings in the start tag processing,
1187: # and provide a mechanism to output the stop text external
1188: # to tag processing.
1189: #
1190: {
1191:
1192: my $closing_string = ''; # String required to close <p>
1193:
1194: # Some tags are <p> fragile meaning that <p> inside of them
1195: # does not work within TeX mode. This is managed via the
1196: # counter below:
1197: #
1198:
1199: my $para_disabled = 0;
1200:
1201: sub disable_para {
1202: $para_disabled++;
1203: }
1204: sub enable_para {
1205: $para_disabled--;
1206: }
1207:
1208:
1209: #-- <p> tag (end tag optional)
1210: #optional attribute - align="center|left|right"
1211: sub start_p {
1212: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1213: my $currentstring = '';
1214: if ($target eq 'web' || $target eq 'webgrade') {
1215: $currentstring .= &end_p(); # close off prior para if in progress.
1216: $currentstring .= $token->[4];
1217: if (! ($currentstring =~ /\//)) {
1218: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1219: }
1220: } elsif ($target eq 'tex' && !$para_disabled) {
1221:
1222: $currentstring .= &end_p(); # close off prior para if in progress.
1223: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1224: if ($align eq 'center') {
1225: $currentstring .='\begin{center}\par ';
1226: $closing_string = '\end{center}';
1227: if (&is_inside_of($tagstack, "table")) {
1228: $currentstring = ¢er_correction().$currentstring;
1229: }
1230: } elsif ($align eq 'right') {
1231: $currentstring.="\n".'{\flushright ';
1232: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1233: $closing_string= "}\n";
1234: } elsif ($align eq 'left') {
1235: $currentstring.= "\n".'{\flushleft ';
1236: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1237: $closing_string = "}\n";
1238: } else {
1239: $currentstring.='\par ';
1240: if (&is_inside_of($tagstack, 'table')) {
1241: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1242: } else {
1243: $closing_string = '\strut\\\\\strut ';
1244: }
1245: }
1246:
1247: }
1248: return $currentstring;
1249: }
1250: #
1251: # End paragraph processing just requires that we output the
1252: # closing string that was saved and blank it.
1253: sub end_p {
1254: # Note only 'tex' mode uses disable_para and enable_para
1255: # so we don't need to know the target in the check below:
1256:
1257: if (!$para_disabled) {
1258: my $current_string = $closing_string;
1259: $closing_string = ''; # Not in a para anymore.
1260: return $current_string;
1261: } else {
1262: return '';
1263: }
1264:
1265: }
1266: }
1267: #-- <br> tag (end tag forbidden)
1268: sub start_br {
1269: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1270: my $currentstring = '';
1271: if ($target eq 'web' || $target eq 'webgrade') {
1272: $currentstring .= $token->[4];
1273: } elsif ($target eq 'tex') {
1274: my @tempo=@$tagstack;
1275: my $signal=0;
1276: # Not going to factor this to is_inside_of since that would require
1277: # multiple stack traversals.
1278: #
1279: for (my $i=$#tempo;$i>=0;$i--) {
1280: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1281: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1282: $signal=1;
1283: }
1284: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1285: $signal = 1;
1286: }
1287: }
1288: if ($signal != 1) {
1289: $currentstring .= '\strut \\\\ \strut ';
1290: }
1291:
1292: }
1293: return $currentstring;
1294: }
1295:
1296: sub end_br {
1297: my ($target,$token) = @_;
1298: my $currentstring = '';
1299: if ($target eq 'web' || $target eq 'webgrade') {
1300: $currentstring .= $token->[2];
1301: }
1302: return $currentstring;
1303: }
1304:
1305: #-- <big> tag (end tag required)
1306: sub start_big {
1307: my ($target,$token) = @_;
1308: my $currentstring = '';
1309: if ($target eq 'web' || $target eq 'webgrade') {
1310: $currentstring .= $token->[4];
1311: } elsif ($target eq 'tex') {
1312: $currentstring .= '{\large ';
1313: }
1314: return $currentstring;
1315: }
1316:
1317: sub end_big {
1318: my ($target,$token) = @_;
1319: my $currentstring = '';
1320: if ($target eq 'web' || $target eq 'webgrade') {
1321: $currentstring .= $token->[2];
1322: } elsif ($target eq 'tex') {
1323: $currentstring .= '}';
1324: }
1325: return $currentstring;
1326: }
1327:
1328: #-- <small> tag (end tag required)
1329: sub start_small {
1330: my ($target,$token) = @_;
1331: my $currentstring = '';
1332: if ($target eq 'web' || $target eq 'webgrade') {
1333: $currentstring .= $token->[4];
1334: } elsif ($target eq 'tex') {
1335: $currentstring .= '{\footnotesize ';
1336: }
1337: return $currentstring;
1338: }
1339:
1340: sub end_small {
1341: my ($target,$token) = @_;
1342: my $currentstring = '';
1343: if ($target eq 'web' || $target eq 'webgrade') {
1344: $currentstring .= $token->[2];
1345: } elsif ($target eq 'tex') {
1346: $currentstring .= '}';
1347: }
1348: return $currentstring;
1349: }
1350:
1351: #-- <basefont> tag (end tag forbidden)
1352: sub start_basefont {
1353: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1354: my $currentstring = '';
1355: if ($target eq 'web' || $target eq 'webgrade') {
1356: $currentstring = $token->[4];
1357: } elsif ($target eq 'tex') {
1358: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1359: if (defined $basesize) {
1360: $currentstring = '{\\'.$basesize.' ';
1361: }
1362: }
1363: return $currentstring;
1364: }
1365:
1366: sub end_basefont {
1367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1368: my $currentstring = '';
1369: if ($target eq 'web' || $target eq 'webgrade') {
1370: $currentstring = $token->[4];
1371: } elsif ($target eq 'tex') {
1372: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1373: if (defined $basesize) {
1374: $currentstring = '}';
1375: }
1376: }
1377: return $currentstring;
1378: }
1379:
1380: #-- <font> tag (end tag required)
1381: sub start_font {
1382: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1383: my $currentstring = '';
1384: if ($target eq 'web' || $target eq 'webgrade') {
1385: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1386: if ($face!~/symbol/i) {
1387: if (($env{'browser.fontenhance'} eq 'on') ||
1388: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1389: }
1390: $currentstring = $token->[4];
1391: } elsif ($target eq 'tex') {
1392: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1393: if (defined $fontsize) {
1394: $currentstring = '{\\'.$fontsize.' ';
1395: }
1396: }
1397: return $currentstring;
1398: }
1399:
1400: sub end_font {
1401: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1402: my $currentstring = '';
1403: if ($target eq 'web' || $target eq 'webgrade') {
1404: $currentstring = $token->[2];
1405: } elsif ($target eq 'tex') {
1406: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1407: if (defined $fontsize) {
1408: $currentstring = '}';
1409: }
1410: }
1411: return $currentstring;
1412: }
1413:
1414: #-- <strike> tag (end tag required)
1415: sub start_strike {
1416: my ($target,$token) = @_;
1417: my $currentstring = '';
1418: if ($target eq 'web' || $target eq 'webgrade') {
1419: $currentstring .= $token->[4];
1420: } elsif ($target eq 'tex') {
1421: &Apache::lonxml::startredirection();
1422: }
1423: return $currentstring;
1424: }
1425:
1426: sub end_strike {
1427: my ($target,$token) = @_;
1428: my $currentstring = '';
1429: if ($target eq 'web' || $target eq 'webgrade') {
1430: $currentstring .= $token->[2];
1431: } elsif ($target eq 'tex') {
1432: $currentstring=&Apache::lonxml::endredirection();
1433: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1434: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1435: $currentstring=~s/(\S)\s*$/$1\}/;
1436: }
1437: return $currentstring;
1438: }
1439:
1440: #-- <s> tag (end tag required)
1441: sub start_s {
1442: my ($target,$token) = @_;
1443: my $currentstring = '';
1444: if ($target eq 'web' || $target eq 'webgrade') {
1445: $currentstring .= $token->[4];
1446: } elsif ($target eq 'tex') {
1447: &Apache::lonxml::startredirection();
1448: }
1449: return $currentstring;
1450: }
1451:
1452: sub end_s {
1453: my ($target,$token) = @_;
1454: my $currentstring = '';
1455: if ($target eq 'web' || $target eq 'webgrade') {
1456: $currentstring .= $token->[2];
1457: } elsif ($target eq 'tex') {
1458: $currentstring=&Apache::lonxml::endredirection();
1459: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1460: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1461: $currentstring=~s/(\S)\s*$/$1\}/;
1462: }
1463: return $currentstring;
1464: }
1465:
1466: #-- <sub> tag (end tag required)
1467: sub start_sub {
1468: my ($target,$token) = @_;
1469: my $currentstring = '';
1470: if ($target eq 'web' || $target eq 'webgrade') {
1471: $currentstring .= $token->[4];
1472: } elsif ($target eq 'tex') {
1473: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1474: }
1475: return $currentstring;
1476: }
1477:
1478: sub end_sub {
1479: my ($target,$token) = @_;
1480: my $currentstring = '';
1481: if ($target eq 'web' || $target eq 'webgrade') {
1482: $currentstring .= $token->[2];
1483: } elsif ($target eq 'tex') {
1484: $currentstring .= '}}';
1485: }
1486: return $currentstring;
1487: }
1488:
1489: #-- <sup> tag (end tag required)
1490: sub start_sup {
1491: my ($target,$token) = @_;
1492: my $currentstring = '';
1493: if ($target eq 'web' || $target eq 'webgrade') {
1494: $currentstring .= $token->[4];
1495: } elsif ($target eq 'tex') {
1496: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1497: }
1498: return $currentstring;
1499: }
1500:
1501: sub end_sup {
1502: my ($target,$token) = @_;
1503: my $currentstring = '';
1504: if ($target eq 'web' || $target eq 'webgrade') {
1505: $currentstring .= $token->[2];
1506: } elsif ($target eq 'tex') {
1507: $currentstring .= '}}';
1508: }
1509: return $currentstring;
1510: }
1511:
1512: #-- <hr> tag (end tag forbidden)
1513: sub start_hr {
1514: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1515: my $currentstring = &end_p(); # End enclosing para.
1516: if ($target eq 'web' || $target eq 'webgrade') {
1517: $currentstring .= $token->[4];
1518: } elsif ($target eq 'tex') {
1519:
1520: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1521: #
1522: my $restart_sub = 0;
1523: my $restart_sup = 0;
1524:
1525: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1526: # using the start_ stop_ functions.. those tags only care about
1527: # $target.
1528:
1529: if (&is_inside_of($tagstack, "sub")) {
1530: $restart_sub = 1;
1531: $currentstring .= &end_sub($target, $token, $tagstack,
1532: $parstack, $parser, $safeeval);
1533: }
1534: if (&is_inside_of($tagstack, "sup")) {
1535: $restart_sup = 1;
1536: $currentstring .= &end_sup($target, $token, $tagstack,
1537: $parstack, $parser, $safeeval);
1538: }
1539:
1540: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1541: if (defined $LaTeXwidth) {
1542: if ($LaTeXwidth=~/^%/) {
1543: substr($LaTeXwidth,0,1)='';
1544: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1545: }
1546: } else {
1547: $LaTeXwidth ='0.9\textwidth';
1548: }
1549: my ($pre,$post);
1550: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1551: if (($align eq 'center') || (not defined $align)) {
1552: $pre=''; $post='';
1553: } elsif ($align eq 'left') {
1554: $pre='\rlap{'; $post='} \hfill';
1555: } elsif ($align eq 'right') {
1556: $pre=' \hfill \llap{'; $post='}';
1557: }
1558: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1559: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1560: # Turn stuff back on that we can't be inside of.
1561:
1562: if ($restart_sub) {
1563: $currentstring .= &start_sub($target, $token, $tagstack,
1564: $parstack, $parser, $safeeval);
1565: }
1566: if ($restart_sup) {
1567: $currentstring .= &start_sup($target, $token, $tagstack,
1568: $parstack, $parser, $safeeval);
1569: }
1570: }
1571: return $currentstring;
1572: }
1573:
1574: sub end_hr {
1575: my ($target,$token) = @_;
1576: my $currentstring = '';
1577: if ($target eq 'web' || $target eq 'webgrade') {
1578: $currentstring .= $token->[2];
1579: }
1580: return $currentstring;
1581: }
1582:
1583: #-- <div> tag (end tag required)
1584: {
1585:
1586: # Since div can be nested, the stack below is used
1587: # in 'tex' mode to store the ending strings
1588: # for the div stack.
1589:
1590: my @div_end_stack;
1591:
1592: sub start_div {
1593: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1594: my $currentstring = &end_p(); # Close enclosing para.
1595: if ($target eq 'web' || $target eq 'webgrade') {
1596: $currentstring .= $token->[4];
1597: }
1598: if ($target eq 'tex') {
1599: # 4 possible alignments: left, right, center, and -missing-.
1600: # If inside a table row, we must let the table logic
1601: # do the alignment, however.
1602: #
1603:
1604: my $endstring = '';
1605:
1606: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1607: $safeeval, undef, 1));
1608: if ($align eq 'center') {
1609: $currentstring .= '\begin{center}';
1610: $endstring = '\end{center}';
1611: if (&is_inside_of($tagstack, "table")) {
1612: $currentstring = ¢er_correction().$currentstring;
1613: $endstring .= ¢er_end_correction();
1614: }
1615: }
1616: elsif ($align eq 'right') {
1617: $currentstring .= '\begin{flushright}';
1618: $endstring .= '\end{flushright}';
1619: } elsif ($align eq 'left') {
1620: $currentstring .= '\begin{flushleft}';
1621: $endstring = '\end{flushleft}';
1622: } else {
1623:
1624: }
1625: $currentstring .= "\n"; # For human readability.
1626: $endstring = "\n$endstring\n"; # For human readability
1627: push(@div_end_stack, $endstring);
1628: }
1629: return $currentstring;
1630: }
1631:
1632: sub end_div {
1633: my ($target,$token) = @_;
1634: my $currentstring = '';
1635: if ($target eq 'web' || $target eq 'webgrade') {
1636: $currentstring .= $token->[2];
1637: }
1638: if ($target eq 'tex') {
1639: my $endstring = pop @div_end_stack;
1640: $currentstring .= $endstring;
1641: }
1642: return $currentstring;
1643: }
1644: }
1645:
1646: #-- <a> tag (end tag required)
1647: sub start_a {
1648: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1649: my $currentstring = '';
1650: if ($target eq 'web' || $target eq 'webgrade') {
1651: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1652: undef,1);
1653: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1654: }
1655: return $currentstring;
1656: }
1657:
1658: sub end_a {
1659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1660: my $currentstring = '';
1661: if ($target eq 'web' || $target eq 'webgrade') {
1662: $currentstring .= $token->[2];
1663: }
1664: if ($target eq 'tex') {
1665: my $href =
1666: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1667: my $name =
1668: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1669: my $uriprint =
1670: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1671: my $anchorprint =
1672: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1673: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1674: $href =~ s/([^\\])%/$1\\\%/g;
1675: # Substitute special symbols... and allow line breaks at each /
1676: #
1677: $href = &Apache::lonxml::latex_special_symbols($href);
1678: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1679: $currentstring .= ' ({\tt URI:'.$href.'})';
1680: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1681: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1682: } else {
1683: $currentstring.='';
1684: }
1685: }
1686: return $currentstring;
1687: }
1688:
1689: #-- <li> tag (end tag optional)
1690: sub start_li {
1691: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1692: my $currentstring = '';
1693: if ($target eq 'web' || $target eq 'webgrade') {
1694: $currentstring = $token->[4];
1695: } elsif ($target eq 'tex') {
1696: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1697: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1698: #FIXME need to support types i and I
1699: if ($type=~/disc/) {
1700: $currentstring .= ' \item[$\bullet$] ';
1701: } elsif ($type=~/circle/) {
1702: $currentstring .= ' \item[$\circ$] ';
1703: } elsif ($type=~/square/) {
1704: $currentstring .= ' \item[$\diamond$] ';
1705: } elsif ($type eq '1') {
1706: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1707: } elsif ($type eq 'A') {
1708: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1709: } elsif ($type eq 'a') {
1710: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1711: } elsif ($value ne '') {
1712: $currentstring .= ' \item['.$value.'] ';
1713: } else {
1714: $currentstring .= ' \item ';
1715: }
1716: $Apache::londefdef::list_index++;
1717: }
1718: return $currentstring;
1719: }
1720:
1721: sub end_li {
1722: my ($target,$token) = @_;
1723: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1724: if ($target eq 'web' || $target eq 'webgrade') {
1725: $currentstring .= $token->[2];
1726: }
1727: return $currentstring;
1728: }
1729:
1730: #-- <u> tag (end tag required)
1731: sub start_u {
1732: my ($target,$token) = @_;
1733: my $currentstring = '';
1734: if ($target eq 'web' || $target eq 'webgrade') {
1735: $currentstring .= $token->[4];
1736: } elsif ($target eq 'tex') {
1737: &Apache::lonxml::startredirection();
1738: }
1739: return $currentstring;
1740: }
1741:
1742: sub end_u {
1743: my ($target,$token) = @_;
1744: my $currentstring = '';
1745: if ($target eq 'web' || $target eq 'webgrade') {
1746: $currentstring .= $token->[2];
1747: } elsif ($target eq 'tex') {
1748: $currentstring=&Apache::lonxml::endredirection();
1749: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1750: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1751: $currentstring=~s/(\S)\s*$/$1\}/;
1752: }
1753: return $currentstring;
1754: }
1755:
1756: #-- <ul> tag (end tag required)
1757: sub start_ul {
1758: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1759: my $currentstring = &end_p(); # Close off enclosing list.
1760: if ($target eq 'web' || $target eq 'webgrade') {
1761: $currentstring .= $token->[4];
1762: } elsif ($target eq 'tex') {
1763: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1764: $Apache::londefdef::list_index=0;
1765: if ($TeXtype eq 'disc') {
1766: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1767: '\renewcommand{\labelitemii}{$\bullet$}'.
1768: '\renewcommand{\labelitemiii}{$\bullet$}'.
1769: '\renewcommand{\labelitemiv}{$\bullet$}';
1770: } elsif ($TeXtype eq 'circle') {
1771: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1772: '\renewcommand{\labelitemii}{$\circ$}'.
1773: '\renewcommand{\labelitemiii}{$\circ$}'.
1774: '\renewcommand{\labelitemiv}{$\circ$}';
1775: } elsif ($TeXtype eq 'square') {
1776: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1777: '\renewcommand{\labelitemii}{$\diamond$}'.
1778: '\renewcommand{\labelitemiii}{$\diamond$}'.
1779: '\renewcommand{\labelitemiv}{$\diamond$}';
1780: }
1781: $currentstring .= '\strut \begin{itemize}';
1782: }
1783: return $currentstring;
1784: }
1785:
1786: sub end_ul {
1787: my ($target,$token) = @_;
1788: my $currentstring = '';
1789: if ($target eq 'web' || $target eq 'webgrade') {
1790: $currentstring = $token->[2];
1791: } elsif ($target eq 'tex') {
1792: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1793: '\renewcommand{\labelitemii}{$\bullet$}'.
1794: '\renewcommand{\labelitemiii}{$\bullet$}'.
1795: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1796: }
1797: return $currentstring;
1798: }
1799:
1800: #-- <menu> tag (end tag required)
1801: sub start_menu {
1802: my ($target,$token) = @_;
1803: my $currentstring = '';
1804: if ($target eq 'web' || $target eq 'webgrade') {
1805: $currentstring = $token->[4];
1806: } elsif ($target eq 'tex') {
1807: $currentstring = " \\begin{itemize} ";
1808: }
1809: return $currentstring;
1810: }
1811:
1812: sub end_menu {
1813: my ($target,$token) = @_;
1814: my $currentstring = '';
1815: if ($target eq 'web' || $target eq 'webgrade') {
1816: $currentstring = $token->[2];
1817: } elsif ($target eq 'tex') {
1818: $currentstring = " \\end{itemize}";
1819: }
1820: return $currentstring;
1821: }
1822:
1823: #-- <dir> tag (end tag required)
1824: sub start_dir {
1825: my ($target,$token) = @_;
1826: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1827: if ($target eq 'web' || $target eq 'webgrade') {
1828: $currentstring .= $token->[4];
1829: } elsif ($target eq 'tex') {
1830: $currentstring .= " \\begin{itemize} ";
1831: }
1832: return $currentstring;
1833: }
1834:
1835: sub end_dir {
1836: my ($target,$token) = @_;
1837: my $currentstring = '';
1838: if ($target eq 'web' || $target eq 'webgrade') {
1839: $currentstring = $token->[2];
1840: } elsif ($target eq 'tex') {
1841: $currentstring = " \\end{itemize}";
1842: }
1843: return $currentstring;
1844: }
1845:
1846: #-- <ol> tag (end tag required)
1847: sub start_ol {
1848: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1849: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1850: if ($target eq 'web' || $target eq 'webgrade') {
1851: $currentstring .= $token->[4];
1852: } elsif ($target eq 'tex') {
1853: $Apache::londefdef::list_index=0;
1854: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1855: if ($type eq '1') {
1856: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1857: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1858: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1859: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1860: } elsif ($type eq 'A') {
1861: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1862: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1863: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1864: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1865: } elsif ($type eq 'a') {
1866: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1867: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1868: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1869: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1870: } elsif ($type eq 'i') {
1871: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1872: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1873: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1874: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1875: } elsif ($type eq 'I') {
1876: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1877: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1878: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1879: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1880: }
1881: $currentstring .= '\strut \begin{enumerate}';
1882: }
1883: return $currentstring;
1884: }
1885:
1886: sub end_ol {
1887: my ($target,$token) = @_;
1888: my $currentstring = '';
1889: if ($target eq 'web' || $target eq 'webgrade') {
1890: $currentstring = $token->[2];
1891: } elsif ($target eq 'tex') {
1892: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1893: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1894: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1895: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1896: }
1897: return $currentstring;
1898: }
1899:
1900: #-- <dl> tag (end tag required)
1901: sub start_dl {
1902: my ($target,$token) = @_;
1903: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1904: if ($target eq 'web' || $target eq 'webgrade') {
1905: $currentstring .= $token->[4];
1906: } elsif ($target eq 'tex') {
1907: $currentstring .= '\begin{description}';
1908: $Apache::londefdef::DL++;
1909: push(@Apache::londefdef::description,[]);
1910: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1911: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1912: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1913: }
1914: return $currentstring;
1915: }
1916:
1917: sub end_dl {
1918: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1919: my $currentstring = '';
1920: if ($target eq 'web' || $target eq 'webgrade') {
1921: $currentstring = $token->[2];
1922: } elsif ($target eq 'tex') {
1923: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1924: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1925: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1926: $currentstring.=' '.$element.' ';
1927: }
1928: pop(@Apache::londefdef::description);
1929: $currentstring.='\end{description}';
1930: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1931: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1932: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1933: $Apache::londefdef::DL--;
1934: }
1935: return $currentstring;
1936: }
1937:
1938: #-- <dt> tag (end tag optional)
1939: sub start_dt {
1940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1941: my $currentstring='';
1942: if ($target eq 'web' || $target eq 'webgrade') {
1943: $currentstring = $token->[4];
1944: } elsif ($target eq 'tex') {
1945: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1946: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1947: &Apache::lonxml::startredirection();
1948: $Apache::londefdef::DT[-1]++;
1949: $Apache::londefdef::seenDT[-1]=1;
1950: }
1951: return $currentstring;
1952: }
1953:
1954: sub end_dt {
1955: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1956: my $currentstring = '';
1957: if ($target eq 'web' || $target eq 'webgrade') {
1958: $currentstring = $token->[2];
1959: } elsif ($target eq 'tex') {
1960: if ($Apache::londefdef::DT[-1]) {
1961: my $data=&item_cleanup();
1962: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1963: $Apache::londefdef::DT[-1]--;
1964: }
1965: }
1966: return $currentstring;
1967: }
1968:
1969: sub item_cleanup {
1970: my $item=&Apache::lonxml::endredirection();
1971: $item=~s/\\begin{center}//g;
1972: $item=~s/\\end{center}//g;
1973: return $item;
1974: }
1975:
1976: #-- <dd> tag (end tag optional)
1977: sub start_dd {
1978: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1979: my $currentstring = '';
1980: if ($target eq 'web' || $target eq 'webgrade') {
1981: $currentstring = $token->[4];
1982: } elsif ($target eq 'tex') {
1983: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1984: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1985: if (!$Apache::londefdef::seenDT[-1]) {
1986: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1987: }
1988: push(@{$Apache::londefdef::description[-1]},'');
1989: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1990: $Apache::londefdef::DD[-1]++;
1991: &Apache::lonxml::startredirection();
1992: }
1993: return $currentstring;
1994: }
1995:
1996: sub end_dd {
1997: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1998: my $currentstring = '';
1999: if ($target eq 'web' || $target eq 'webgrade') {
2000: $currentstring = $token->[2];
2001: } elsif ($target eq 'tex') {
2002: $Apache::londefdef::description[-1]->[-1].=
2003: &Apache::lonxml::endredirection().' \vskip 0mm ';
2004: $Apache::londefdef::DD[-1]--;
2005: }
2006: return $currentstring;
2007: }
2008:
2009: #-- <table> tag (end tag required)
2010: # <table> also ends any prior <p> that is not closed.
2011: # but, unless I allow <p>'s to nest, that's the
2012: # only way I could think of to allow <p> in
2013: # <tr> <th> bodies
2014: #
2015: #list of supported attributes: border,width,TeXwidth,TeXtheme
2016: # align
2017: sub start_table {
2018: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2019: my $textwidth = '';
2020: my $currentstring = &end_p();
2021: if ($target eq 'web' || $target eq 'webgrade') {
2022: $currentstring .= $token->[4];
2023: } elsif ($target eq 'tex') {
2024: &disable_para(); # Can't have paras in a table.
2025:
2026:
2027: # New table code:
2028:
2029: # Get the parameters that we can do something about:
2030:
2031: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2032: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2033: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2034: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2035:
2036: # The only thing that needs any figuring out is the width.. and then only if it is
2037: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2038: #
2039:
2040: my $table = new Apache::lontable();
2041: if ($border ne '') {
2042: $table->table_border(1);
2043: $table->cell_border(1);
2044: }
2045: if ($theme ne '') {
2046: $table->theme($theme);
2047: }
2048: if ($align ne '') {
2049: $table->alignment($align);
2050: }
2051:
2052: # Missing width is most of page width
2053:
2054: if ($width eq "") {
2055: $width = '70%';
2056: }
2057:
2058: # If a percentage, need to calculate what this means in terms of
2059: # page width:
2060:
2061: if ($width =~ /%$/) {
2062: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2063: $width =~ s/%//;
2064: $width = $width * $textwidth / 100.0;
2065: $width .= " mm";
2066: $table->width($width);
2067: }
2068:
2069: push(@Apache::londefdef::table, $table);
2070: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2071:
2072: #--------------------------------------------------------
2073: # Old table code here.
2074: #--------------------------------------------------------
2075:
2076:
2077: if (0) {
2078: push(@Apache::londefdef::table, {});
2079: $Apache::londefdef::table[-1]{'row_number'} = -1;
2080: #maximum table's width (default coincides with text line length)
2081: if ($#Apache::londefdef::table==0) {
2082: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2083: $textwidth=~/(\d+\.?\d*)/;
2084: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2085: } else {
2086: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2087: #the maximum width of nested table is determined by LATeX width of parent cell
2088: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2089: } else {
2090: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2091: $textwidth=$Apache::londefdef::table[-2]{'width'};
2092: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2093: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2094: }
2095: }
2096: }
2097:
2098: # width either comes forced from the TeXwidth or the width parameters.
2099: # in either case it can be a percentage or absolute width.
2100: # in the width case we ignore absolute width
2101: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2102: if (!defined($TeXwidth)) {
2103: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2104: $safeeval,undef,1);
2105: if ($htmlwidth =~ /%/) {
2106: $TeXwidth = $htmlwidth;
2107: } else {
2108: $TeXwidth = $textwidth;
2109: }
2110: }
2111: # if the width is specified as a % it is converted to an absolute width.
2112: # otherwise.. just plugged right in the hash
2113:
2114: if ($TeXwidth=~/%/) {
2115: $TeXwidth=~/(\d+)/;
2116: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2117: } else {
2118: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2119: }
2120: # In the end, however the table width cannot be wider than $textwidth...
2121:
2122: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2123: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2124: }
2125: #table's border
2126: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2127: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2128: unless (defined $border) { $border = 0; }
2129: if ($border) {
2130: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2131: $Apache::londefdef::table[-1]{'vinc'} = '&';
2132: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2133: } else {
2134: $Apache::londefdef::table[-1]{'hinc'} = '';
2135: $Apache::londefdef::table[-1]{'vinc'} = '&';
2136: $Apache::londefdef::table[-1]{'vvinc'} = '';
2137: }
2138: if ($#Apache::londefdef::table==0) {
2139: # Note that \newline seems to destroy the alignment envs.
2140: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2141: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2142: }
2143: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2144: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2145: $Apache::londefdef::table[-1]{'objectlen'}=[];
2146: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2147: $Apache::londefdef::table[-1]{'maxlen'}=[];
2148: $Apache::londefdef::table[-1]{'minlen'}=[];
2149: $Apache::londefdef::table[-1]{'content'}=[];
2150: $Apache::londefdef::table[-1]{'align'}=[];
2151: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2152: }
2153:
2154: }
2155: return $currentstring;
2156: }
2157:
2158: sub end_table {
2159: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2160: my $currentstring = '';
2161: if ($target eq 'web' || $target eq 'webgrade') {
2162: $currentstring = $token->[2];
2163: } elsif ($target eq 'tex') {
2164:
2165:
2166: # New table code:
2167:
2168: my $table = pop(@Apache::londefdef::table);
2169: my $t = $table->generate();
2170: $currentstring = $t->generate_string();
2171: &enable_para();
2172: #--------------------------------------------------------------
2173: # Old table code:
2174: #--------------------------------------------------------------
2175:
2176: if (0) {
2177:
2178: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2179: my $inmemory = '';
2180: my $output = '';
2181: my $WARNING='';
2182: #width of columns from TeXwidth attributes
2183:
2184: # Protect against unbalanced </table> tag.
2185:
2186: if (scalar(@Apache::londefdef::table) > 0) {
2187:
2188: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2189: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2190: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2191: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2192: }
2193: }
2194: }
2195: #free space and number of empty columns
2196: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2197: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2198: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2199: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2200: $empty_columns++;
2201: } else {
2202: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2203: }
2204: }
2205:
2206: #boundaries for contents columns
2207: my @min_len=();#columns can not be narrower
2208: my @max_len=();#maximum length of column
2209: my $avg_max;
2210: my $avg_min;
2211: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2212: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2213: my ($localmin,$localmax)=(0,0);
2214: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2215: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2216: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2217: }
2218: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2219: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2220: }
2221: }
2222: push @min_len, $localmin;
2223: push @max_len, $localmax;
2224: $avg_max = $localmax + $avg_max;
2225: $avg_min = $localmin + $avg_min;
2226: }
2227: # Does not really matter what the average max/min are if there are no cols.
2228: # and this prevents div 0 in that case.
2229:
2230: if ($counter_cols != 0) {
2231: $avg_max = $avg_max/$counter_cols;
2232: $avg_min = $avg_min/$counter_cols;
2233: }
2234:
2235:
2236: # I don't think the below is needed.. but just in case:
2237:
2238: if ($avg_min > $avg_max) {
2239: my $temp = $avg_min;
2240: $avg_min = $avg_max;
2241: $avg_max = $temp;
2242: }
2243:
2244:
2245: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2246: my $localmin=0,;
2247: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2248: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2249: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2250: }
2251: }
2252: if ($max_len[$jn]<$localmin) {
2253: $max_len[$jn]=$localmin;
2254: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2255: }#object size is bigger
2256: if ($min_len[$jn]<$localmin) {
2257: $min_len[$jn]=$localmin;
2258: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2259: }#object size is bigger
2260: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2261: $min_len[$jn]=0;
2262: $max_len[$jn]=0;
2263: }
2264: # Spans seem to be really bothered by max/min = 0. So if we have one
2265: # make it an average joe max/min.
2266:
2267: if ($max_len[$jn] == 0) {
2268: $max_len[$jn] = $avg_max;
2269: }
2270: if ($min_len[$jn] == 0) {
2271: $min_len[$jn] = $avg_min;
2272: }
2273:
2274: }
2275: #final adjustment of column width
2276: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2277: my @adjust=();
2278: #step 1. adjustment by maximum value
2279: my $space_needed=0;
2280: for (my $jn=0;$jn<=$#max_len;$jn++) {
2281: $space_needed=$space_needed+$max_len[$jn];
2282: }
2283: if ($space_needed<=$available_space) {
2284:
2285: for (my $jn=0;$jn<=$#max_len;$jn++) {
2286: if ($fwidth[$jn]==0) {
2287: $fwidth[$jn]=$max_len[$jn];
2288: }
2289: }
2290: } else {
2291: #step 2. adjustment by minimum value (estimation)
2292: $space_needed=0;
2293: for (my $jn=0;$jn<=$#min_len;$jn++) {
2294: $space_needed+=$min_len[$jn];
2295: }
2296: if ($space_needed>$available_space) {
2297: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2298: for (my $jn=0;$jn<=$#max_len;$jn++) {
2299: if ($fwidth[$jn]==0) {
2300: $fwidth[$jn]=$min_len[$jn];
2301: }
2302: }
2303: #check if we have objects which can be scaled
2304: my $how_many_to_scale=0;
2305: my @to_scale=();
2306: for (my $jn=0;$jn<=$#max_len;$jn++) {
2307: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2308: $how_many_to_scale++;
2309: push @to_scale, $jn;
2310: }
2311: }
2312: if ($how_many_to_scale>0) {
2313: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2314: foreach my $jn (@to_scale) {
2315: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2316: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2317: if ($1 ne '') {
2318: my $current_length=&recalc($1);
2319: $current_length=~/(\d+\.?\d*)/;
2320: $current_length=$current_length-$space_to_adjust;
2321: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2322: }
2323: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2324: if ($1 ne '') {
2325: my $current_length=$1;
2326: $current_length=$current_length-$space_to_adjust;
2327: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2328: }
2329: }
2330: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2331: }
2332: }
2333: } else {
2334: #step 3. adjustment over minimal + corrections
2335: my $enlarge_coef=$available_space/$space_needed;
2336: my $acsessive=0;
2337: for (my $jn=0;$jn<=$#min_len;$jn++) {
2338: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2339: if ($adjust[$jn]>$max_len[$jn]) {
2340: $fwidth[$jn]=$max_len[$jn];
2341: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2342: $adjust[$jn]=0;
2343:
2344: }
2345: }
2346: if ($acsessive>0) {
2347: #we have an excess of space and can redistribute it
2348: my $notempty_columns=0;
2349: for (my $jn=0;$jn<=$#min_len;$jn++) {
2350: if ($adjust[$jn]!=0) {
2351: $notempty_columns++;
2352: }
2353: }
2354: my $per_column=$acsessive/$notempty_columns;
2355: for (my $jn=0;$jn<=$#min_len;$jn++) {
2356: if ($adjust[$jn]!=0) {
2357: $adjust[$jn]+=$per_column;
2358: $fwidth[$jn]=$adjust[$jn];
2359: }
2360: }
2361: } else {
2362: for (my $jn=0;$jn<=$#min_len;$jn++) {
2363: $fwidth[$jn]=$adjust[$jn];
2364: }
2365: }
2366: }
2367: }
2368: # use all available width or specified width as if not specified,
2369: # the specified width gets defaulted to the available width.
2370:
2371: my $current=0;
2372: for (my $i=0;$i<=$#fwidth;$i++) {
2373: $current+=$fwidth[$i];
2374: }
2375: if ($current == 0) {
2376: $current = $Apache::londefdef::table[-1]{'width'};
2377: }
2378: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2379: for (my $i=0;$i<=$#fwidth;$i++) {
2380: $fwidth[$i]*=$coef;
2381: }
2382: #removing of empty columns if allowed
2383: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2384: if ($permission eq 'yes') {
2385: my @cleaned_table=();
2386: my @cleaned_header=();
2387: my $colind=0;
2388: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2389: if ($fwidth[$jn]!=0) {
2390: #we need to copy column
2391: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2392: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2393: $cleaned_header[$colind]=$fwidth[$jn];
2394: }
2395: $colind++;
2396: }
2397: }
2398: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2399: @fwidth=@cleaned_header;
2400: }
2401:
2402:
2403: #construct header of the table
2404: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2405: for (my $in=0;$in<=$#fwidth;$in++) {
2406: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2407: }
2408: $header_of_table .= '}';
2409:
2410: #fill the table
2411: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2412: my $have_rowspan = 0;
2413: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2414:
2415: #-----------------------------------------------------------
2416: # I think this order of doing things will ensure that
2417: # single rowspan, columspan and combined row/colspans will
2418: # work correctly. LaTeX is delicate here.
2419: # RF.
2420:
2421: # Start a rowspan if necessary:
2422:
2423: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2424: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2425: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2426: #
2427: # Do the appropriate magic if this has a colspan
2428: #
2429:
2430: my $border_char = "";
2431: if ($border) {
2432: $border_char = "|";
2433: }
2434: my $spanwidth = 0;
2435: if ($colspan > 1) {
2436: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2437: $spanwidth += $fwidth[$spancol];
2438: }
2439: $output .= '\multicolumn{'.
2440: $colspan
2441: ."}";
2442: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2443: $output .= '{'.$border_char.'c'.$border_char.'}{';
2444: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2445: $output .= '{'.$border_char.'r'.$border_char.'}{';
2446: }
2447: else {
2448: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2449: }
2450:
2451: } else {
2452: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2453: }
2454:
2455: # Rowspan... if colspan is 1, and there's an alignment we'll need
2456: # to kick in a multicolumn in order to get the alignment spec.
2457: # this must precede the multirow or LaTex gets quite upset.
2458: # Naturally if colspan > 1 we've already done that above ^
2459: #
2460: my $multirow_aligned = 0;
2461: if ($rowspan > 1) {
2462: if ($colspan == 1) {
2463: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2464: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2465: $multirow_aligned = 1;
2466: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2467: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2468: $multirow_aligned = 1;
2469: }
2470: }
2471: $have_rowspan++;
2472: if ($multirow_aligned) {
2473: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2474: } else {
2475: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2476: }
2477:
2478: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2479: s{^\s*\\par\s*}{};
2480: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2481: s{\s*\\vskip\s*0pt\s*$}{};
2482:
2483: #
2484: # If we did not throw in a multicolumn to align, then add
2485: # an extra {
2486: # so we close correctly without having to keep additional state
2487: # around
2488: #
2489: if (!$multirow_aligned) {
2490: $output .= '{';
2491: }
2492: }
2493: if (($rowspan eq '^') || ($rowspan eq '_')) {
2494: $have_rowspan++;
2495: }
2496: #--------------------------------------------------------------
2497:
2498:
2499: # For right and center alignment of single cells.
2500: # we are going to use a multicolumn with a span of 1 to specify alignment.
2501: #
2502: if ($colspan == 1 && $rowspan == 1) {
2503: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2504: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2505: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2506: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2507: }
2508: }
2509:
2510: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2511:
2512: if (($colspan == 1 && $rowspan == 1) &&
2513: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2514: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2515: $output .= '}';
2516: }
2517:
2518: # Close off any open multirow:
2519:
2520: if ($rowspan > 1) {
2521: $output .= '}}';
2522: }
2523: # Close off the colspan...
2524: #
2525: if ($colspan > 1) {
2526: $output .= '}';
2527: $jn += $colspan-1; # Adjust for number of rows really left.
2528: }
2529: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2530: }
2531: # If have_rowspan > 0, and borders are on, then
2532: # we need to do more than put an \hline at the bottom of row.
2533: # we need to do the appropriate \cline to ensure that
2534: # the spanned rows don't have \hlines through them.
2535:
2536: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2537: $output .= ' \\\\ ';
2538: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2539: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2540: if ($rowspan ne "^") {
2541: if (($rowspan <= 1) || ($rowspan eq '_')) {
2542: my $column = $jn+1;
2543: $output .= '\cline{'.$column.'-'.$column.'} ';
2544: }
2545: }
2546: }
2547:
2548: } else {
2549: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2550: }
2551: }
2552: # Note that \newline destroys alignment env's produced by e.g. <div>
2553: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2554: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2555: if ($#Apache::londefdef::table > 0) {
2556: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2557: # Figure out max/and min width by summing us and then
2558: # apply that to the current column of the table we nest in
2559: # if it's larger than the current width or the current width
2560: # is undefined.
2561: #
2562: my $min_nested_width = 0;
2563: my $max_nested_width = 0;
2564: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2565: $min_nested_width += $min_len[$col];
2566: $max_nested_width += $max_len[$col];
2567:
2568: }
2569: # Fudge in an extra 5 mm for borders etc:
2570:
2571: $min_nested_width += 5;
2572: $max_nested_width += 5;
2573:
2574: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2575: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2576: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2577: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2578: }
2579: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2580: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2581: }
2582:
2583: pop @Apache::londefdef::table;
2584: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2585: } else {
2586: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2587: pop @Apache::londefdef::table;
2588: undef @Apache::londefdef::table;
2589: }
2590: }
2591: &enable_para();
2592: }
2593: }
2594: return $currentstring;
2595: }
2596:
2597: #-- <tr> tag (end tag optional)
2598: sub start_tr {
2599: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2600: my $currentstring = '';
2601: if ($target eq 'web' || $target eq 'webgrade') {
2602: $currentstring = $token->[4];
2603: } elsif ($target eq 'tex') {
2604:
2605: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2606: $Apache::londefdef::table[-1]->start_row();
2607:
2608: if ($align ne '') {
2609: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2610: }
2611:
2612: #---------------------------------------------------------------
2613: # Old table code.
2614: #---------------------------------------------------------------
2615:
2616: if (0) {
2617: $Apache::londefdef::table[-1]{'row_number'}++;
2618: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2619: if ($alignchar ne '') {
2620: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2621: } else {
2622: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2623: }
2624: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2625: #
2626: # Need to save the number of table columns to preserve the max # columns.
2627: #
2628: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2629: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2630: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2631: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2632: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2633: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2634: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2635: }
2636: }
2637: return $currentstring;
2638: }
2639:
2640: sub end_tr {
2641: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2642: my $currentstring = &end_p(); # Close any pending <p> in the row.
2643: if ($target eq 'web' || $target eq 'webgrade') {
2644: $currentstring .= $token->[2];
2645: } elsif ($target eq 'tex') {
2646:
2647: # In case the user is missing a </td> or </th> tag:
2648:
2649: if ($Apache::londefdef::TD_redirection) {
2650: &end_td_tex($parstack,$parser,$safeeval);
2651: }
2652: $Apache::londefdef::table[-1]->end_row();
2653:
2654: #-----------------------------------------------
2655: # Old table code
2656: #-----------------------------------------------
2657:
2658: if (0) {
2659: if ($Apache::londefdef::TD_redirection) {
2660: &end_td_tex($parstack,$parser,$safeeval);
2661: }
2662: # Counter columns must be the maximum number of columns seen
2663: # in the table so far so:
2664: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2665: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2666: }
2667: }
2668:
2669:
2670: }
2671: return $currentstring;
2672: }
2673:
2674: #-- <td> tag (end tag optional)
2675: sub start_td {
2676: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2677: my $currentstring = '';
2678: if ($target eq 'web' || $target eq 'webgrade') {
2679: $currentstring = $token->[4];
2680: } elsif ($target eq 'tex') {
2681: $Apache::londefdef::TD_redirection = 1;
2682: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2683: }
2684: return $currentstring;
2685: }
2686:
2687: sub tag_check {
2688: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2689: my @ar=@$parstack;
2690: for (my $i=$#ar-1;$i>=0;$i--) {
2691: if (lc($$tagstack[$i]) eq $good_tag) {
2692: &start_td_tex($parstack,$parser,$safeeval);
2693: last;
2694: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2695: splice @ar, $i+1;
2696: &end_td_tex(\@ar,$parser,$safeeval);
2697: &start_td_tex($parstack,$parser,$safeeval);
2698: last;
2699: }
2700: }
2701: return '';
2702: }
2703:
2704: #
2705: # Factor out cell configuration hash generation:
2706: #
2707:
2708: sub cell_config_hash {
2709: my ($align, $rowspan, $colspan) = @_;
2710: my %config;
2711: if ($align ne '') {
2712: $config{'halign'} = $align;
2713: }
2714: if ($colspan ne "") {
2715: $config{'colspan'} = $colspan;
2716: }
2717: if ($rowspan ne '') {
2718: $config{'rowspan'} = $rowspan;
2719: }
2720: return \%config;
2721: }
2722:
2723: sub start_td_tex {
2724: my ($parstack,$parser,$safeeval) = @_;
2725:
2726: # At this stage, an empty cell is created with the
2727: # appropriate rowspan/colspan and alignment
2728: # attributes, but empty of text. end_td_tex will
2729: # fetch the contents from the recursive parse and
2730: # fill the cell with them:
2731: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2732: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2733: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2734:
2735: my $config = &cell_config_hash($align, $rowspan, $colspan);
2736:
2737: my $table = $Apache::londefdef::table[-1];
2738: $table->add_cell('', $config);
2739:
2740:
2741: #------------------------------------------------
2742: # Old table code.
2743: #------------------------------------------------
2744:
2745: if (0) {
2746:
2747: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2748: if ($alignchar eq '') {
2749: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2750: }
2751: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2752: $Apache::londefdef::table[-1]{'counter_columns'}++;
2753: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2754: if (defined $TeXwidth) {
2755: my $current_length=&recalc($TeXwidth);
2756: $current_length=~/(\d+\.?\d*)/;
2757: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2758: }
2759: }
2760: &Apache::lonxml::startredirection();
2761: return '';
2762: }
2763:
2764: sub end_td_tex {
2765:
2766: my $text = &Apache::lonxml::endredirection();
2767: my $table = $Apache::londefdef::table[-1];
2768: $table->append_cell_text($text);
2769:
2770: #-------------------------------------------------
2771: # Old table code
2772: #-------------------------------------------------
2773:
2774: if (0) {
2775: my ($parstack,$parser,$safeeval) = @_;
2776: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2777: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2778: my $data = &Apache::lonxml::endredirection();
2779:
2780: # The rowspan array of the table indicates which cells are part of a span.
2781: # n indicates the start of a span set of n rows.
2782: # ^ indicates a cell that continues a span set.
2783: # _ indicates the cell is at the bottom of a span set.
2784: # If this and subsequent cells are part of a rowspan, we must
2785: # push along the row until we find one that is not.
2786:
2787: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2788: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2789: # Part of a span.
2790: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2791: $current_column++;
2792: }
2793: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2794:
2795:
2796: # Get the column and row spans.
2797: # Colspan can be done via \multicolumn if I can figure out the data structs.
2798:
2799: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2800: if (!$colspan) {
2801: $colspan = 1;
2802: }
2803:
2804: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2805: if (!$rowspan) {
2806: $rowspan = 1;
2807: }
2808:
2809:
2810:
2811: for (my $c = 0; $c < $colspan; $c++) {
2812: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2813: for (my $i = 1; $i < $rowspan; $i++) {
2814: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2815: if ($i == ($rowspan-1)) {
2816: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2817: }
2818: }
2819: }
2820:
2821: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2822: if (defined $TeXwidth) {
2823: for (my $c = 0; $c < $colspan; $c++) {
2824: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2825: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2826: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2827: }
2828: } else {
2829: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2830: my $garbage_data=$data;
2831: my $fwidth=0;
2832: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2833: my $current_length=&recalc($1);
2834: $current_length=~/(\d+\.?\d*)/;
2835: if ($fwidth<$1) {$fwidth=$1;}
2836: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2837: }
2838: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2839: my $current_length=$1;
2840: if ($fwidth<$current_length) {$fwidth=$current_length;}
2841: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2842: }
2843: for (my $c = 0; $c < $colspan; $c++) {
2844: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2845: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2846: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2847: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2848: }
2849: } 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)*/) {
2850: my $garbage_data=$data;
2851: my $fwidth=0;
2852: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2853: my $current_length=&recalc($1);
2854: $current_length=~/(\d+\.?\d*)/;
2855: if ($fwidth<$1) {$fwidth=$1;}
2856: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2857: }
2858: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2859: my $current_length=&recalc($1);
2860: $current_length=~/(\d+\.?\d*)/;
2861: if ($fwidth<$1) {$fwidth=$1;}
2862: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2863: }
2864: for (my $c = 0; $c < $colspan; $c++) {
2865: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2866: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2867: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2868: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2869: }
2870: $data=~s/\\\\\s*$//;
2871: } else {
2872: $data=~s/^\s+(\S.*)/$1/;
2873: $data=~s/(.*\S)\s+$/$1/;
2874: $data=~s/(\s)+/$1/;
2875: my ($current_length,$min_length)=(0,0);
2876: if ($data=~/\\vskip/) {
2877: my $newdata=$data;
2878: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2879: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2880: foreach my $elementdata (@newdata) {
2881: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2882: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2883: my @words=split(/ /,$elementdata);
2884: foreach my $word (@words) {
2885: my $lengthword=2.5*&LATEX_length($word);
2886: if ($min_length<$lengthword) {$min_length=$lengthword;}
2887: }
2888: }
2889: } else {
2890: $current_length=2.5*&LATEX_length($data);
2891: my @words=split(/ /,$data);
2892: foreach my $word (@words) {
2893: my $lengthword=2*&LATEX_length($word);
2894: if ($min_length<$lengthword) {$min_length=$lengthword;}
2895: }
2896: }
2897: for (my $c = 0; $c < $colspan; $c++) {
2898: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2899: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2900: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2901: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2902: }
2903: }
2904: }
2905: # Substitute all of the tables nested in this cell in their appropriate places.
2906:
2907:
2908: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2909: for (my $in=0; $in<=$nested_count; $in++) {
2910: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2911: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2912: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2913: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2914:
2915: }
2916: # Should be be killing off the 'include' elements as they're used up?
2917:
2918: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2919:
2920:
2921:
2922:
2923: # the colspan array will indicate how many columns will be spanned by this
2924: # cell..this requires that counter_columns also be adjusted accordingly
2925: # so that the next bunch of text goes in the right cell. Note that since
2926: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2927: #
2928:
2929: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2930: for (my $i = 0; $i < ($colspan -1); $i++) {
2931: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2932: }
2933: for (my $r = 0; $r < $rowspan; $r++) {
2934: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2935: # Put empty text in spanned cols.
2936:
2937: }
2938:
2939: }
2940:
2941: return '';
2942: }
2943:
2944: sub end_td {
2945: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2946: my $currentstring = '';
2947: if ($target eq 'web' || $target eq 'webgrade') {
2948: $currentstring = $token->[2];
2949: } elsif ($target eq 'tex') {
2950: $Apache::londefdef::TD_redirection =0;
2951: &end_td_tex($parstack,$parser,$safeeval);
2952: }
2953: return $currentstring;
2954: }
2955:
2956: #-- <th> tag (end tag optional)
2957: sub start_th {
2958: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2959: my $currentstring = '';
2960: if ($target eq 'web' || $target eq 'webgrade') {
2961: $currentstring = $token->[4];
2962: } elsif ($target eq 'tex') {
2963: $Apache::londefdef::TD_redirection = 1;
2964: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2965: }
2966: return $currentstring;
2967: }
2968:
2969: sub tagg_check {
2970: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2971: my @ar=@$parstack;
2972: for (my $i=$#ar-1;$i>=0;$i--) {
2973: if (lc($$tagstack[$i]) eq $good_tag) {
2974: &start_th_tex($parstack,$parser,$safeeval);
2975: last;
2976: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2977: splice @ar, $i+1;
2978: &end_th_tex(\@ar,$parser,$safeeval);
2979: &start_th_tex($parstack,$parser,$safeeval);
2980: last;
2981: }
2982: }
2983: return '';
2984: }
2985:
2986: sub start_th_tex {
2987: my ($parstack,$parser,$safeeval) = @_;
2988:
2989: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2990: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2991: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2992:
2993: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2994: my $table = $Apache::londefdef::table[-1];
2995: $table->add_cell('\textbf{', $config);
2996:
2997: #-------------------------------------------------------------------------------------
2998: #
2999: # Old table code.
3000: #
3001: #--------------------------------------------------------------------------------------
3002:
3003: if (0) {
3004:
3005:
3006: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
3007: if ($alignchar eq '') {
3008: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
3009: }
3010: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
3011: $Apache::londefdef::table[-1]{'counter_columns'}++;
3012: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3013: if (defined $TeXwidth) {
3014: my $current_length=&recalc($TeXwidth);
3015: $current_length=~/(\d+\.?\d*)/;
3016: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
3017: }
3018: }
3019:
3020: # Accept xml until the </th> tag.
3021:
3022: &Apache::lonxml::startredirection();
3023: return '';
3024: }
3025:
3026: sub end_th_tex {
3027: my ($parstack,$parser,$safeeval) = @_;
3028:
3029: my $table = $Apache::londefdef::table[-1];
3030: my $text = &Apache::lonxml::endredirection();
3031: $table->append_cell_text($text.'}');
3032:
3033: #-----------------------------------------------------------------------------
3034: # Old table code:
3035: #-----------------------------------------------------------------------------
3036:
3037: if (0) {
3038: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3039: my $data=&Apache::lonxml::endredirection();
3040: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3041: if (defined $TeXwidth) {
3042: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3043: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3044: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3045: } else {
3046: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3047: my $garbage_data=$data;
3048: my $fwidth=0;
3049: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3050: my $current_length=&recalc($1);
3051: $current_length=~/(\d+\.?\d*)/;
3052: if ($fwidth<$1) {$fwidth=$1;}
3053: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3054: }
3055: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3056: my $current_length=$1;
3057: if ($fwidth<$current_length) {$fwidth=$current_length;}
3058: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3059: }
3060: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3061: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3062: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3063: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3064: } else {
3065: $data=~s/^\s+(\S.*)/$1/;
3066: $data=~s/(.*\S)\s+$/$1/;
3067: $data=~s/(\s)+/$1/;
3068: my ($current_length,$min_length)=(0,0);
3069: if ($data=~/\\vskip/) {
3070: my $newdata=$data;
3071: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3072: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3073: foreach my $elementdata (@newdata) {
3074: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3075: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3076: my @words=split(/ /,$elementdata);
3077: foreach my $word (@words) {
3078: my $lengthword=2.5*&LATEX_length($word);
3079: if ($min_length<$lengthword) {$min_length=$lengthword;}
3080: }
3081: }
3082: } else {
3083: $current_length=2.5*&LATEX_length($data);
3084: my @words=split(/ /,$data);
3085: foreach my $word (@words) {
3086: my $lengthword=2*&LATEX_length($word);
3087: if ($min_length<$lengthword) {$min_length=$lengthword;}
3088: }
3089: }
3090: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3091: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3092: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3093: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3094: }
3095: }
3096: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3097: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3098: }
3099: #make data bold
3100: $data='\textbf{'.$data.'}';
3101: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3102: }
3103: return'';
3104: }
3105:
3106: sub end_th {
3107: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3108: my $currentstring = &end_p(); # Close any open <p> in the row.
3109: if ($target eq 'web' || $target eq 'webgrade') {
3110: $currentstring .= $token->[2];
3111: } elsif ($target eq 'tex') {
3112: $Apache::londefdef::TD_redirection =0;
3113: &end_th_tex($parstack,$parser,$safeeval);
3114: }
3115: return $currentstring;
3116: }
3117:
3118: #-- <img> tag (end tag forbidden)
3119: #
3120: # Render the <IMG> tag.
3121: # <IMG> has the following attributes (in addition to the
3122: # standard HTML ones:
3123: # TeXwrap - Governs how the tex target will try to wrap text around
3124: # horizontally aligned images.
3125: # TeXwidth - The width of the image when rendered for print (mm).
3126: # TeXheight - The height of the image when rendered for print (mm)
3127: # (Note there seems to also be support for this as a % of page size)
3128: #
3129: sub start_img {
3130: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3131: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3132: undef,1);
3133: if (! $src &&
3134: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3135: ) {
3136: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3137: return '';
3138: }
3139: &Apache::lonxml::extlink($src);
3140: my $currentstring = '';
3141: my $scaling = .3;
3142:
3143: # Render unto browsers that which are the browser's...
3144:
3145: if ($target eq 'web' || $target eq 'webgrade') {
3146: if ($env{'browser.imagesuppress'} ne 'on') {
3147: my $enc = ('yes' eq
3148: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3149: $safeeval)));
3150: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3151: $enc);
3152: } else {
3153: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3154: undef,1);
3155: if (!$alttag) {
3156: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3157: $src);
3158: }
3159: $currentstring.='[IMAGE: '.$alttag.']';
3160: }
3161:
3162: # and render unto TeX that which is LaTeX
3163:
3164: } elsif ($target eq 'tex') {
3165: #
3166: # The alignment will require some superstructure to be put around
3167: # the \includegraphics stuff. At present we can only partially
3168: # simulate the alignments offered by html.
3169: #
3170: #
3171: my $align = lc(&Apache::lonxml::get_param('align',
3172: $parstack,
3173: $safeeval,
3174: undef,1));
3175: if(!$align) {
3176: $align = "bottom"; # This is html's default so it's ours too.
3177: }
3178: #
3179: &Apache::lonxml::debug("Alignemnt = $align");
3180: # LaTeX's image/text wrapping is really bad since it wants to
3181: # make figures float.
3182: # The user has the optional parameter (applicable only to l/r
3183: # alignment to use the picins/parpic directive to get wrapped text
3184: # this is also imperfect.. that's why we give them a choice...
3185: # so they can't yell at us for our choice.
3186: #
3187: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3188: $parstack,
3189: $safeeval,
3190: undef,0);
3191: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3192: if(!$latex_rendering) {
3193: $latex_rendering = "texwrap";
3194: }
3195: # using texwrap inside a table does not work. So, if after all of this,
3196: # texwrap is on, we turn it off if we detect we're in a table:
3197: #
3198: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3199: $latex_rendering = 'parpic';
3200: }
3201:
3202: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3203:
3204: #if original bmp/gif/jpg/png file exist do following:
3205: my $origsrc=$src;
3206: my ($path,$file) = &get_eps_image($src);
3207: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3208: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3209: &Apache::lonxml::debug("path = $path file = $file src = $src");
3210: if (-e $src) {
3211: &Apache::lonxml::debug("$src exists");
3212: my ($height_param,$width_param)=
3213: &image_size($origsrc,0.3,$parstack,$safeeval);
3214: my $size;
3215: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3216: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3217: # Default size if not able to extract that (e.g. eps image).
3218:
3219: # &Apache::lonnet::logthis("Size = $size");
3220:
3221: $size='['.$size;
3222: $size=~s/,$/]/;
3223: $currentstring .= '\graphicspath{{'.$path.'}}'
3224: .'\includegraphics'.$size.'{'.$file.'} ';
3225: my $closure;
3226: ($currentstring, $closure) = &align_latex_image($align,
3227: $latex_rendering,
3228: $currentstring,
3229: $width_param,
3230: $height_param);
3231: $currentstring .= $closure;
3232:
3233: } else {
3234: &Apache::lonxml::debug("$src does not exist");
3235: #original image file doesn't exist so check the alt attribute
3236: my $alt =
3237: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3238: unless ($alt) {
3239: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3240: }
3241:
3242: if ($alt) { $currentstring .= ' '.$alt.' '; }
3243: }
3244:
3245: # And here's where the semi-quote breaks down: allow the user
3246: # to edit the beast as well by rendering the problem for edit:
3247: } elsif ($target eq 'edit') {
3248: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3249: $currentstring .=&Apache::edit::tag_start($target,$token);
3250: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3251: &Apache::edit::browse('src',undef,'alt',$only).' '.
3252: &Apache::edit::search('src',undef,'alt').'<br />';
3253: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3254: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3255: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3256: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3257: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3258: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3259: ['','bottom','middle','top','left','right'],$token,5);
3260: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3261: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3262: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3263: ['no','yes'], $token, 2);
3264: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3265: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3266: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3267: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3268: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3269:
3270: if ($token->[2]{'src'}=~/\$/) {
3271: $currentstring.='Variable image source';
3272: } else {
3273: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3274: if ($width) { $currentstring.=' width="'.$width.'" '; }
3275: if ($height) { $currentstring.=' height="'.$height.'" '; }
3276: $currentstring .= ' />';
3277: }
3278: } elsif ($target eq 'modified') {
3279: my ($osrc,$owidth,$oheight)=
3280: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3281: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3282: $safeeval,'src','alt','align',
3283: 'TeXwidth','TeXheight', 'TeXwrap',
3284: 'width','height','encrypturl');
3285: my ($nsrc,$nwidth,$nheight)=
3286: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3287: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3288: &image_replication($loc);
3289: my ($iwidth,$iheight);
3290: if (-e $loc) {
3291: my $image = Image::Magick->new;
3292: $image->Read($loc);
3293: ($iwidth, $iheight) = ($image->Get('width'),
3294: $image->Get('height'));
3295: }
3296: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3297: # changed image or no size specified,
3298: # if they didn't explicitly change the
3299: # width or height use the ones from the image
3300: if ($iwidth && $iheight) {
3301: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3302: $token->[2]{'width'} = $iwidth;$ctag=1;
3303: }
3304: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3305: $token->[2]{'height'}=$iheight;$ctag=1;
3306: }
3307: }
3308: }
3309: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3310: # if we don't have a width or height
3311: if ($iwidth && $cwidth && !$cheight) {
3312: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3313: }
3314: if ($iheight && $cheight && !$cwidth) {
3315: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3316: }
3317: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3318: }
3319:
3320: return $currentstring;
3321: }
3322:
3323: sub end_img {
3324: my ($target,$token) = @_;
3325: my $currentstring = '';
3326: if ($target eq 'web' || $target eq 'webgrade') {
3327: $currentstring = $token->[2];
3328: } elsif ($target eq 'tex') {
3329: $currentstring = '';
3330: }
3331: return $currentstring;
3332: }
3333:
3334: #-- <applet> tag (end tag required)
3335: sub start_applet {
3336: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3337:
3338: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3339: &Apache::lonxml::extlink($code);
3340: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3341: undef,1);
3342: &Apache::lonxml::extlink($archive);
3343: my $currentstring = '';
3344: if ($target eq 'web' || $target eq 'webgrade') {
3345: if ($env{'browser.appletsuppress'} ne 'on') {
3346: $currentstring = &Apache::lonenc::encrypt_ref($token,
3347: {'code'=>$code,
3348: 'archive'=>$archive}
3349: );
3350: } else {
3351: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3352: $safeeval,undef,1);
3353: unless ($alttag) {
3354: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3355: $code);
3356: }
3357: $currentstring='[APPLET: '.$alttag.']';
3358: }
3359: } elsif ($target eq 'tex') {
3360: # Turn off some stuff we can't be inside thank you LaTeX
3361:
3362:
3363: my $restart_sub = 0;
3364: my $restart_sup = 0;
3365:
3366: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3367: # using the start_ stop_ functions.. those tags only care about
3368: # $target.
3369:
3370: if (&is_inside_of($tagstack, "sub")) {
3371: $restart_sub = 1;
3372: $currentstring .= &end_sub($target, $token, $tagstack,
3373: $parstack, $parser, $safeeval);
3374: }
3375: if (&is_inside_of($tagstack, "sup")) {
3376: $restart_sup = 1;
3377: $currentstring .= &end_sup($target, $token, $tagstack,
3378: $parstack, $parser, $safeeval);
3379: }
3380:
3381: # Now process the applet; just replace it with its alt attribute.
3382:
3383: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3384: $safeeval,undef,1);
3385: unless ($alttag) {
3386: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3387: undef,1);
3388: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3389: $code);
3390: }
3391: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3392: '.}\end{center}';
3393:
3394: # Turn stuff back on that we can't be inside of.
3395:
3396: if ($restart_sub) {
3397: $currentstring .= &start_sub($target, $token, $tagstack,
3398: $parstack, $parser, $safeeval);
3399: }
3400: if ($restart_sup) {
3401: $currentstring .= &start_sup($target, $token, $tagstack,
3402: $parstack, $parser, $safeeval);
3403: }
3404: }
3405: return $currentstring;
3406: }
3407:
3408: sub end_applet {
3409: my ($target,$token) = @_;
3410: my $currentstring = '';
3411: if ($target eq 'web' || $target eq 'webgrade') {
3412: $currentstring = $token->[2];
3413: } elsif ($target eq 'tex') {
3414: }
3415: return $currentstring;
3416: }
3417:
3418: #-- <embed> tag (end tag optional/required)
3419: sub start_embed {
3420: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3421: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3422: &Apache::lonxml::extlink($src);
3423: my $currentstring = '';
3424: if ($target eq 'web' || $target eq 'webgrade') {
3425: if ($env{'browser.embedsuppress'} ne 'on') {
3426: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3427: } else {
3428: my $alttag=&Apache::lonxml::get_param
3429: ('alt',$parstack,$safeeval,undef,1);
3430: unless ($alttag) {
3431: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3432: }
3433: $currentstring='[EMBED: '.$alttag.']';
3434: }
3435: } elsif ($target eq 'tex') {
3436: }
3437: return $currentstring;
3438: }
3439:
3440: sub end_embed {
3441: my ($target,$token) = @_;
3442: my $currentstring = '';
3443: if ($target eq 'web' || $target eq 'webgrade') {
3444: $currentstring = $token->[2];
3445: } elsif ($target eq 'tex') {
3446: }
3447: return $currentstring;
3448: }
3449:
3450: #-- <param> tag (end tag forbidden)
3451: sub start_param {
3452: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3453: if (&Apache::lonxml::get_param('name',$parstack,
3454: $safeeval,undef,1)=~/^cabbase$/i) {
3455: my $value=&Apache::lonxml::get_param('value',$parstack,
3456: $safeeval,undef,1);
3457: &Apache::lonxml::extlink($value);
3458: }
3459:
3460: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3461: &Apache::lonxml::extlink($src);
3462: my $currentstring = '';
3463: if ($target eq 'web' || $target eq 'webgrade') {
3464: my %toconvert;
3465: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3466: if ($src) { $toconvert{'src'}= $src; }
3467: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3468: undef,1);
3469: if ($name=~/^cabbase$/i) {
3470: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3471: $safeeval,undef,1);
3472: }
3473: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3474: } elsif ($target eq 'tex') {
3475: }
3476: return $currentstring;
3477: }
3478:
3479: sub end_param {
3480: my ($target,$token) = @_;
3481: my $currentstring = '';
3482: if ($target eq 'web' || $target eq 'webgrade') {
3483: $currentstring = $token->[2];
3484: } elsif ($target eq 'tex') {
3485: }
3486: return $currentstring;
3487: }
3488:
3489: #-- <allow> tag
3490: sub start_allow {
3491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3492: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3493: &Apache::lonxml::extlink($src);
3494:
3495: if ($target eq 'tex') { &image_replication($src); }
3496: my $result;
3497: if ($target eq 'edit') {
3498: $result .=&Apache::edit::tag_start($target,$token);
3499: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3500: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3501: } elsif ($target eq 'modified') {
3502: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3503: $safeeval,'src');
3504: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3505: }
3506: return $result;
3507: }
3508:
3509: sub end_allow {
3510: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3511: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3512: return '';
3513: }
3514:
3515: #-- Frames (end tag required)
3516: #-- <frameset>
3517: sub start_frameset {
3518: my ($target,$token) = @_;
3519: my $currentstring = ''; # Close any pending para.
3520: if ($target eq 'web' || $target eq 'webgrade') {
3521: $currentstring =
3522: &Apache::loncommon::start_page($Apache::londefdef::title,
3523: $Apache::londefdef::head,
3524: {'add_entries' => $token->[2],
3525: 'no_title' => 1,
3526: 'force_register' => 1,
3527: 'frameset' => 1,});
3528:
3529: }
3530: return $currentstring;
3531: }
3532:
3533: sub end_frameset {
3534: my ($target,$token) = @_;
3535: my $currentstring = '';
3536: if ($target eq 'web' || $target eq 'webgrade') {
3537: $currentstring = $token->[2];
3538: }
3539: return $currentstring;
3540: }
3541:
3542: #-- <xmp> (end tag required)
3543: sub start_xmp {
3544: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3545: my $currentstring = '';
3546: if ($target eq 'web' || $target eq 'webgrade') {
3547: $currentstring .= $token->[4];
3548: } elsif ($target eq 'tex') {
3549: $currentstring .= '\begin{verbatim}';
3550: }
3551: return $currentstring;
3552: }
3553:
3554: sub end_xmp {
3555: my ($target,$token) = @_;
3556: my $currentstring = '';
3557: if ($target eq 'web' || $target eq 'webgrade') {
3558: $currentstring .= $token->[2];
3559: } elsif ($target eq 'tex') {
3560: $currentstring .= '\end{verbatim}';
3561: }
3562: return $currentstring;
3563: }
3564:
3565: #-- <pre> (end tag required)
3566: sub start_pre {
3567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3568: my $currentstring = &end_p(); # close off pending <p>
3569: if ($target eq 'web' || $target eq 'webgrade') {
3570: $currentstring .= $token->[4];
3571: } elsif ($target eq 'tex') {
3572: $currentstring .= '\begin{verbatim}';
3573: &Apache::lonxml::disable_LaTeX_substitutions();
3574: }
3575: return $currentstring;
3576: }
3577:
3578: sub end_pre {
3579: my ($target,$token) = @_;
3580: my $currentstring = '';
3581: if ($target eq 'web' || $target eq 'webgrade') {
3582: $currentstring .= $token->[2];
3583: } elsif ($target eq 'tex') {
3584: $currentstring .= '\end{verbatim}';
3585: &Apache::lonxml::enable_LaTeX_substitutions();
3586: }
3587: return $currentstring;
3588: }
3589:
3590: #-- <insert>
3591: sub start_insert {
3592: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3593: my $currentstring = '';
3594: if ($target eq 'web' || $target eq 'webgrade') {
3595: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3596: $currentstring .= '<b>'.$display.'</b>';;
3597: }
3598: return $currentstring;
3599: }
3600:
3601: sub end_insert {
3602: my ($target,$token) = @_;
3603: my $currentstring = '';
3604: if ($target eq 'web' || $target eq 'webgrade') {
3605: $currentstring .= '';
3606: }
3607: return $currentstring;
3608: }
3609:
3610: #-- <externallink>
3611: sub start_externallink {
3612: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3613: my $currentstring = '';
3614: if ($target eq 'web' || $target eq 'webgrade') {
3615: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3616: $currentstring .= '<b>'.$display.'</b>';;
3617: }
3618: return $currentstring;
3619: }
3620:
3621: sub end_externallink {
3622: my ($target,$token) = @_;
3623: my $currentstring = '';
3624: if ($target eq 'web' || $target eq 'webgrade') {
3625: $currentstring .= '';
3626: }
3627: return $currentstring;
3628: }
3629:
3630: #-- <blankspace heigth="">
3631: sub start_blankspace {
3632: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3633: my $currentstring = &end_p(); # closes off any unclosed <p>
3634: if ($target eq 'tex') {
3635: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3636: $currentstring .= '\vskip '.$howmuch.' ';
3637: }
3638: return $currentstring;
3639: }
3640:
3641: sub end_blankspace {
3642: my ($target,$token) = @_;
3643: my $currentstring = '';
3644: if ($target eq 'tex') {
3645: $currentstring .= '';
3646: }
3647: return $currentstring;
3648: }
3649:
3650: #-- <abbr> tag (end tag required)
3651: sub start_abbr {
3652: my ($target,$token) = @_;
3653: my $currentstring = '';
3654: if ($target eq 'web' || $target eq 'webgrade') {
3655: $currentstring = $token->[4];
3656: }
3657: return $currentstring;
3658: }
3659:
3660: sub end_abbr {
3661: my ($target,$token) = @_;
3662: my $currentstring = '';
3663: if ($target eq 'web' || $target eq 'webgrade') {
3664: $currentstring = $token->[2];
3665: }
3666: return $currentstring;
3667: }
3668:
3669: #-- <acronym> tag (end tag required)
3670: sub start_acronym {
3671: my ($target,$token) = @_;
3672: my $currentstring = '';
3673: if ($target eq 'web' || $target eq 'webgrade') {
3674: $currentstring = $token->[4];
3675: }
3676: return $currentstring;
3677: }
3678:
3679: sub end_acronym {
3680: my ($target,$token) = @_;
3681: my $currentstring = '';
3682: if ($target eq 'web' || $target eq 'webgrade') {
3683: $currentstring = $token->[2];
3684: }
3685: return $currentstring;
3686: }
3687:
3688: #-- <area> tag (end tag forbidden)
3689: sub start_area {
3690: my ($target,$token) = @_;
3691: my $currentstring = '';
3692: if ($target eq 'web' || $target eq 'webgrade') {
3693: $currentstring = $token->[4];
3694: }
3695: return $currentstring;
3696: }
3697:
3698: sub end_area {
3699: my ($target,$token) = @_;
3700: my $currentstring = '';
3701: if ($target eq 'web' || $target eq 'webgrade') {
3702: $currentstring = $token->[2];
3703: }
3704: return $currentstring;
3705: }
3706:
3707: #-- <base> tag (end tag forbidden)
3708: sub start_base {
3709: my ($target,$token) = @_;
3710: my $currentstring = '';
3711: if ($target eq 'web' || $target eq 'webgrade') {
3712: $currentstring = $token->[4];
3713: }
3714: return $currentstring;
3715: }
3716:
3717: sub end_base {
3718: my ($target,$token) = @_;
3719: my $currentstring = '';
3720: if ($target eq 'web' || $target eq 'webgrade') {
3721: $currentstring = $token->[2];
3722: }
3723: return $currentstring;
3724: }
3725:
3726: #-- <bdo> tag (end tag required)
3727: sub start_bdo {
3728: my ($target,$token) = @_;
3729: my $currentstring = '';
3730: if ($target eq 'web' || $target eq 'webgrade') {
3731: $currentstring = $token->[4];
3732: }
3733: return $currentstring;
3734: }
3735:
3736: sub end_bdo {
3737: my ($target,$token) = @_;
3738: my $currentstring = '';
3739: if ($target eq 'web' || $target eq 'webgrade') {
3740: $currentstring = $token->[2];
3741: }
3742: return $currentstring;
3743: }
3744:
3745: #-- <bgsound> tag (end tag optional)
3746: sub start_bgsound {
3747: my ($target,$token) = @_;
3748: my $currentstring = '';
3749: if ($target eq 'web' || $target eq 'webgrade') {
3750: $currentstring = $token->[4];
3751: }
3752: return $currentstring;
3753: }
3754:
3755: sub end_bgsound {
3756: my ($target,$token) = @_;
3757: my $currentstring = '';
3758: if ($target eq 'web' || $target eq 'webgrade') {
3759: $currentstring = $token->[2];
3760: }
3761: return $currentstring;
3762: }
3763:
3764: #-- <blink> tag (end tag required)
3765: sub start_blink {
3766: my ($target,$token) = @_;
3767: my $currentstring = '';
3768: if ($target eq 'web' || $target eq 'webgrade') {
3769: $currentstring = $token->[4];
3770: }
3771: return $currentstring;
3772: }
3773:
3774: sub end_blink {
3775: my ($target,$token) = @_;
3776: my $currentstring = '';
3777: if ($target eq 'web' || $target eq 'webgrade') {
3778: $currentstring = $token->[2];
3779: }
3780: return $currentstring;
3781: }
3782:
3783: #-- <blockquote> tag (end tag required)
3784: sub start_blockquote {
3785: my ($target,$token) = @_;
3786: my $currentstring = &end_p(); # Close any unclosed <p>
3787: if ($target eq 'web' || $target eq 'webgrade') {
3788: $currentstring .= $token->[4];
3789: }
3790: if ($target eq 'tex') {
3791: $currentstring .= '\begin{quote}';
3792: }
3793: return $currentstring;
3794: }
3795:
3796: sub end_blockquote {
3797: my ($target,$token) = @_;
3798: my $currentstring = '';
3799: if ($target eq 'web' || $target eq 'webgrade') {
3800: $currentstring = $token->[2];
3801: }
3802: if ($target eq 'tex') {
3803: $currentstring = '\end{quote}';
3804: }
3805: return $currentstring;
3806: }
3807:
3808: #-- <button> tag (end tag required)
3809: sub start_button {
3810: my ($target,$token) = @_;
3811: my $currentstring = '';
3812: if ($target eq 'web' || $target eq 'webgrade') {
3813: $currentstring = $token->[4];
3814: }
3815: return $currentstring;
3816: }
3817:
3818: sub end_button {
3819: my ($target,$token) = @_;
3820: my $currentstring = '';
3821: if ($target eq 'web' || $target eq 'webgrade') {
3822: $currentstring = $token->[2];
3823: }
3824: return $currentstring;
3825: }
3826:
3827: #-- <caption> tag (end tag required)
3828: sub start_caption {
3829: my ($target,$token) = @_;
3830: my $currentstring = '';
3831: if ($target eq 'web' || $target eq 'webgrade') {
3832: $currentstring = $token->[4];
3833: }
3834: return $currentstring;
3835: }
3836:
3837: sub end_caption {
3838: my ($target,$token) = @_;
3839: my $currentstring = '';
3840: if ($target eq 'web' || $target eq 'webgrade') {
3841: $currentstring = $token->[2];
3842: }
3843: return $currentstring;
3844: }
3845:
3846: #-- <col> tag (end tag forbdden)
3847: sub start_col {
3848: my ($target,$token) = @_;
3849: my $currentstring = '';
3850: if ($target eq 'web' || $target eq 'webgrade') {
3851: $currentstring = $token->[4];
3852: }
3853: return $currentstring;
3854: }
3855:
3856: sub end_col {
3857: my ($target,$token) = @_;
3858: my $currentstring = '';
3859: if ($target eq 'web' || $target eq 'webgrade') {
3860: $currentstring = $token->[2];
3861: }
3862: return $currentstring;
3863: }
3864:
3865: #-- <colgroup> tag (end tag optional)
3866: sub start_colgroup {
3867: my ($target,$token) = @_;
3868: my $currentstring = '';
3869: if ($target eq 'web' || $target eq 'webgrade') {
3870: $currentstring = $token->[4];
3871: }
3872: return $currentstring;
3873: }
3874:
3875: sub end_colgroup {
3876: my ($target,$token) = @_;
3877: my $currentstring = '';
3878: if ($target eq 'web' || $target eq 'webgrade') {
3879: $currentstring = $token->[2];
3880: }
3881: return $currentstring;
3882: }
3883:
3884: #-- <del> tag (end tag required)
3885: sub start_del {
3886: my ($target,$token) = @_;
3887: my $currentstring = '';
3888: if ($target eq 'web' || $target eq 'webgrade') {
3889: $currentstring = $token->[4];
3890: }
3891: return $currentstring;
3892: }
3893:
3894: sub end_del {
3895: my ($target,$token) = @_;
3896: my $currentstring = '';
3897: if ($target eq 'web' || $target eq 'webgrade') {
3898: $currentstring = $token->[2];
3899: }
3900: return $currentstring;
3901: }
3902:
3903: #-- <fieldset> tag (end tag required)
3904: sub start_fieldset {
3905: my ($target,$token) = @_;
3906: my $currentstring = '';
3907: if ($target eq 'web' || $target eq 'webgrade') {
3908: $currentstring = $token->[4];
3909: }
3910: return $currentstring;
3911: }
3912:
3913: sub end_fieldset {
3914: my ($target,$token) = @_;
3915: my $currentstring = '';
3916: if ($target eq 'web' || $target eq 'webgrade') {
3917: $currentstring = $token->[2];
3918: }
3919: return $currentstring;
3920: }
3921:
3922: #-- <frame> tag (end tag forbidden)
3923: sub start_frame {
3924: my ($target,$token) = @_;
3925: my $currentstring = '';
3926: if ($target eq 'web' || $target eq 'webgrade') {
3927: $currentstring = $token->[4];
3928: }
3929: return $currentstring;
3930: }
3931:
3932: sub end_frame {
3933: my ($target,$token) = @_;
3934: my $currentstring = '';
3935: if ($target eq 'web' || $target eq 'webgrade') {
3936: $currentstring = $token->[2];
3937: }
3938: return $currentstring;
3939: }
3940:
3941: #-- <iframe> tag (end tag required)
3942: sub start_iframe {
3943: my ($target,$token) = @_;
3944: my $currentstring = '';
3945: if ($target eq 'web' || $target eq 'webgrade') {
3946: $currentstring = $token->[4];
3947: }
3948: return $currentstring;
3949: }
3950:
3951: sub end_iframe {
3952: my ($target,$token) = @_;
3953: my $currentstring = '';
3954: if ($target eq 'web' || $target eq 'webgrade') {
3955: $currentstring = $token->[2];
3956: }
3957: return $currentstring;
3958: }
3959:
3960: #-- <ins> tag (end tag required)
3961: sub start_ins {
3962: my ($target,$token) = @_;
3963: my $currentstring = '';
3964: if ($target eq 'web' || $target eq 'webgrade') {
3965: $currentstring = $token->[4];
3966: }
3967: return $currentstring;
3968: }
3969:
3970: sub end_ins {
3971: my ($target,$token) = @_;
3972: my $currentstring = '';
3973: if ($target eq 'web' || $target eq 'webgrade') {
3974: $currentstring = $token->[2];
3975: }
3976: return $currentstring;
3977: }
3978:
3979: #-- <isindex> tag (end tag forbidden)
3980: sub start_isindex {
3981: my ($target,$token) = @_;
3982: my $currentstring = '';
3983: if ($target eq 'web' || $target eq 'webgrade') {
3984: $currentstring = $token->[4];
3985: }
3986: return $currentstring;
3987: }
3988:
3989: sub end_isindex {
3990: my ($target,$token) = @_;
3991: my $currentstring = '';
3992: if ($target eq 'web' || $target eq 'webgrade') {
3993: $currentstring = $token->[2];
3994: }
3995: return $currentstring;
3996: }
3997:
3998: #-- <keygen> tag (end tag forbidden)
3999: sub start_keygen {
4000: my ($target,$token) = @_;
4001: my $currentstring = '';
4002: if ($target eq 'web' || $target eq 'webgrade') {
4003: $currentstring = $token->[4];
4004: }
4005: return $currentstring;
4006: }
4007:
4008: sub end_keygen {
4009: my ($target,$token) = @_;
4010: my $currentstring = '';
4011: if ($target eq 'web' || $target eq 'webgrade') {
4012: $currentstring = $token->[2];
4013: }
4014: return $currentstring;
4015: }
4016:
4017: #-- <label> tag
4018: sub start_label {
4019: my ($target,$token) = @_;
4020: my $currentstring = '';
4021: if ($target eq 'web' || $target eq 'webgrade') {
4022: $currentstring = $token->[4];
4023: }
4024: return $currentstring;
4025: }
4026:
4027: sub end_label {
4028: my ($target,$token) = @_;
4029: my $currentstring = '';
4030: if ($target eq 'web' || $target eq 'webgrade') {
4031: $currentstring = $token->[2];
4032: }
4033: return $currentstring;
4034: }
4035:
4036: #-- <layer> tag (end tag required)
4037: sub start_layer {
4038: my ($target,$token) = @_;
4039: my $currentstring = '';
4040: if ($target eq 'web' || $target eq 'webgrade') {
4041: $currentstring = $token->[4];
4042: }
4043: return $currentstring;
4044: }
4045:
4046: sub end_layer {
4047: my ($target,$token) = @_;
4048: my $currentstring = '';
4049: if ($target eq 'web' || $target eq 'webgrade') {
4050: $currentstring = $token->[2];
4051: }
4052: return $currentstring;
4053: }
4054:
4055: #-- <legend> tag (end tag required)
4056: sub start_legend {
4057: my ($target,$token) = @_;
4058: my $currentstring = '';
4059: if ($target eq 'web' || $target eq 'webgrade') {
4060: $currentstring = $token->[4];
4061: }
4062: return $currentstring;
4063: }
4064:
4065: sub end_legend {
4066: my ($target,$token) = @_;
4067: my $currentstring = '';
4068: if ($target eq 'web' || $target eq 'webgrade') {
4069: $currentstring = $token->[2];
4070: }
4071: return $currentstring;
4072: }
4073:
4074: #-- <link> tag (end tag forbidden)
4075: sub start_link {
4076: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4077: my $currentstring = '';
4078: if ($target eq 'web' || $target eq 'webgrade') {
4079: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4080: undef,1);
4081: &Apache::lonxml::extlink($href);
4082: $currentstring = $token->[4];
4083: }
4084: return $currentstring;
4085: }
4086:
4087: sub end_link {
4088: my ($target,$token) = @_;
4089: my $currentstring = '';
4090: if ($target eq 'web' || $target eq 'webgrade') {
4091: $currentstring = $token->[2];
4092: }
4093: return $currentstring;
4094: }
4095:
4096: #-- <marquee> tag (end tag optional)
4097: sub start_marquee {
4098: my ($target,$token) = @_;
4099: my $currentstring = '';
4100: if ($target eq 'web' || $target eq 'webgrade') {
4101: $currentstring = $token->[4];
4102: }
4103: return $currentstring;
4104: }
4105:
4106: sub end_marquee {
4107: my ($target,$token) = @_;
4108: my $currentstring = '';
4109: if ($target eq 'web' || $target eq 'webgrade') {
4110: $currentstring = $token->[2];
4111: }
4112: return $currentstring;
4113: }
4114:
4115: #-- <multicol> tag (end tag required)
4116: sub start_multicol {
4117: my ($target,$token) = @_;
4118: my $currentstring = &end_p(); # Close any pending <p>
4119: if ($target eq 'web' || $target eq 'webgrade') {
4120: $currentstring .= $token->[4];
4121: }
4122: return $currentstring;
4123: }
4124:
4125: sub end_multicol {
4126: my ($target,$token) = @_;
4127: my $currentstring = '';
4128: if ($target eq 'web' || $target eq 'webgrade') {
4129: $currentstring = $token->[2];
4130: }
4131: return $currentstring;
4132: }
4133:
4134: #-- <nobr> tag (end tag required)
4135: sub start_nobr {
4136: my ($target,$token) = @_;
4137: my $currentstring = '';
4138: if ($target eq 'web' || $target eq 'webgrade') {
4139: $currentstring = $token->[4];
4140: } elsif ($target eq 'tex') {
4141: $currentstring='\mbox{';
4142: }
4143: return $currentstring;
4144: }
4145:
4146: sub end_nobr {
4147: my ($target,$token) = @_;
4148: my $currentstring = '';
4149: if ($target eq 'web' || $target eq 'webgrade') {
4150: $currentstring = $token->[2];
4151: } elsif ($target eq 'tex') {
4152: $currentstring='}';
4153: }
4154: return $currentstring;
4155: }
4156:
4157: #-- <noembed> tag (end tag required)
4158: sub start_noembed {
4159: my ($target,$token) = @_;
4160: my $currentstring = '';
4161: if ($target eq 'web' || $target eq 'webgrade') {
4162: $currentstring = $token->[4];
4163: }
4164: return $currentstring;
4165: }
4166:
4167: sub end_noembed {
4168: my ($target,$token) = @_;
4169: my $currentstring = '';
4170: if ($target eq 'web' || $target eq 'webgrade') {
4171: $currentstring = $token->[2];
4172: }
4173: return $currentstring;
4174: }
4175:
4176: #-- <noframes> tag (end tag required)
4177: sub start_noframes {
4178: my ($target,$token) = @_;
4179: my $currentstring = '';
4180: if ($target eq 'web' || $target eq 'webgrade') {
4181: $currentstring = $token->[4];
4182: }
4183: return $currentstring;
4184: }
4185:
4186: sub end_noframes {
4187: my ($target,$token) = @_;
4188: my $currentstring = '';
4189: if ($target eq 'web' || $target eq 'webgrade') {
4190: $currentstring = $token->[2];
4191: }
4192: return $currentstring;
4193: }
4194:
4195: #-- <nolayer> tag (end tag required)
4196: sub start_nolayer {
4197: my ($target,$token) = @_;
4198: my $currentstring = '';
4199: if ($target eq 'web' || $target eq 'webgrade') {
4200: $currentstring = $token->[4];
4201: }
4202: return $currentstring;
4203: }
4204:
4205: sub end_nolayer {
4206: my ($target,$token) = @_;
4207: my $currentstring = '';
4208: if ($target eq 'web' || $target eq 'webgrade') {
4209: $currentstring = $token->[2];
4210: }
4211: return $currentstring;
4212: }
4213:
4214: #-- <noscript> tag (end tag required)
4215: sub start_noscript {
4216: my ($target,$token) = @_;
4217: my $currentstring = '';
4218: if ($target eq 'web' || $target eq 'webgrade') {
4219: $currentstring = $token->[4];
4220: }
4221: return $currentstring;
4222: }
4223:
4224: sub end_noscript {
4225: my ($target,$token) = @_;
4226: my $currentstring = '';
4227: if ($target eq 'web' || $target eq 'webgrade') {
4228: $currentstring = $token->[2];
4229: }
4230: return $currentstring;
4231: }
4232:
4233: #-- <object> tag (end tag required)
4234: sub start_object {
4235: my ($target,$token) = @_;
4236: my $currentstring = '';
4237: if ($target eq 'web' || $target eq 'webgrade') {
4238: $currentstring = $token->[4];
4239: }
4240: return $currentstring;
4241: }
4242:
4243: sub end_object {
4244: my ($target,$token) = @_;
4245: my $currentstring = '';
4246: if ($target eq 'web' || $target eq 'webgrade') {
4247: $currentstring = $token->[2];
4248: }
4249: return $currentstring;
4250: }
4251:
4252: #-- <optgroup> tag (end tag required)
4253: sub start_optgroup {
4254: my ($target,$token) = @_;
4255: my $currentstring = '';
4256: if ($target eq 'web' || $target eq 'webgrade') {
4257: $currentstring = $token->[4];
4258: }
4259: return $currentstring;
4260: }
4261:
4262: sub end_optgroup {
4263: my ($target,$token) = @_;
4264: my $currentstring = '';
4265: if ($target eq 'web' || $target eq 'webgrade') {
4266: $currentstring = $token->[2];
4267: }
4268: return $currentstring;
4269: }
4270:
4271: #-- <samp> tag (end tag required)
4272: sub start_samp {
4273: my ($target,$token) = @_;
4274: my $currentstring = '';
4275: if ($target eq 'web' || $target eq 'webgrade') {
4276: $currentstring = $token->[4];
4277: } elsif ($target eq 'tex') {
4278: $currentstring='\texttt{';
4279: }
4280: return $currentstring;
4281: }
4282:
4283: sub end_samp {
4284: my ($target,$token) = @_;
4285: my $currentstring = '';
4286: if ($target eq 'web' || $target eq 'webgrade') {
4287: $currentstring = $token->[2];
4288: } elsif ($target eq 'tex') {
4289: $currentstring='}';
4290: }
4291: return $currentstring;
4292: }
4293:
4294: #-- <server> tag
4295: sub start_server {
4296: my ($target,$token) = @_;
4297: my $currentstring = '';
4298: if ($target eq 'web' || $target eq 'webgrade') {
4299: $currentstring = $token->[4];
4300: }
4301: return $currentstring;
4302: }
4303:
4304: sub end_server {
4305: my ($target,$token) = @_;
4306: my $currentstring = '';
4307: if ($target eq 'web' || $target eq 'webgrade') {
4308: $currentstring = $token->[2];
4309: }
4310: return $currentstring;
4311: }
4312:
4313: #-- <spacer> tag (end tag forbidden)
4314: sub start_spacer {
4315: my ($target,$token) = @_;
4316: my $currentstring = &end_p(); # Close off any open <p> tag.
4317: if ($target eq 'web' || $target eq 'webgrade') {
4318: $currentstring .= $token->[4];
4319: }
4320: return $currentstring;
4321: }
4322:
4323: sub end_spacer {
4324: my ($target,$token) = @_;
4325: my $currentstring = '';
4326: if ($target eq 'web' || $target eq 'webgrade') {
4327: $currentstring = $token->[2];
4328: }
4329: return $currentstring;
4330: }
4331:
4332: #-- <span> tag (end tag required)
4333: sub start_span {
4334: my ($target,$token) = @_;
4335: my $currentstring = '';
4336: if ($target eq 'web' || $target eq 'webgrade') {
4337: $currentstring = $token->[4];
4338: }
4339: return $currentstring;
4340: }
4341:
4342: sub end_span {
4343: my ($target,$token) = @_;
4344: my $currentstring = '';
4345: if ($target eq 'web' || $target eq 'webgrade') {
4346: $currentstring = $token->[2];
4347: }
4348: return $currentstring;
4349: }
4350:
4351: #-- <tbody> tag (end tag optional)
4352: sub start_tbody {
4353: my ($target,$token) = @_;
4354: my $currentstring = '';
4355: if ($target eq 'web' || $target eq 'webgrade') {
4356: $currentstring = $token->[4];
4357: }
4358: return $currentstring;
4359: }
4360:
4361: sub end_tbody {
4362: my ($target,$token) = @_;
4363: my $currentstring = '';
4364: if ($target eq 'web' || $target eq 'webgrade') {
4365: $currentstring = $token->[2];
4366: }
4367: return $currentstring;
4368: }
4369:
4370: #-- <tfoot> tag (end tag optional)
4371: sub start_tfoot {
4372: my ($target,$token) = @_;
4373: my $currentstring = '';
4374: if ($target eq 'web' || $target eq 'webgrade') {
4375: $currentstring = $token->[4];
4376: }
4377: return $currentstring;
4378: }
4379:
4380: sub end_tfoot {
4381: my ($target,$token) = @_;
4382: my $currentstring = '';
4383: if ($target eq 'web' || $target eq 'webgrade') {
4384: $currentstring = $token->[2];
4385: }
4386: return $currentstring;
4387: }
4388:
4389: #-- <thead> tag (end tag optional)
4390: sub start_thead {
4391: my ($target,$token) = @_;
4392: my $currentstring = '';
4393: if ($target eq 'web' || $target eq 'webgrade') {
4394: $currentstring = $token->[4];
4395: }
4396: return $currentstring;
4397: }
4398:
4399: sub end_thead {
4400: my ($target,$token) = @_;
4401: my $currentstring = '';
4402: if ($target eq 'web' || $target eq 'webgrade') {
4403: $currentstring = $token->[2];
4404: }
4405: return $currentstring;
4406: }
4407:
4408: #-- <var> tag
4409: sub start_var {
4410: my ($target,$token) = @_;
4411: my $currentstring = '';
4412: if ($target eq 'web' || $target eq 'webgrade') {
4413: $currentstring = $token->[4];
4414: } elsif ($target eq 'tex') {
4415: $currentstring = '\textit{';
4416: }
4417: return $currentstring;
4418: }
4419:
4420: sub end_var {
4421: my ($target,$token) = @_;
4422: my $currentstring = '';
4423: if ($target eq 'web' || $target eq 'webgrade') {
4424: $currentstring = $token->[2];
4425: } elsif ($target eq 'tex') {
4426: $currentstring = '}';
4427: }
4428: return $currentstring;
4429: }
4430:
4431: #-- <wbr> tag (end tag forbidden)
4432: sub start_wbr {
4433: my ($target,$token) = @_;
4434: my $currentstring = '';
4435: if ($target eq 'web' || $target eq 'webgrade') {
4436: $currentstring = $token->[4];
4437: }
4438: return $currentstring;
4439: }
4440:
4441: sub end_wbr {
4442: my ($target,$token) = @_;
4443: my $currentstring = '';
4444: if ($target eq 'web' || $target eq 'webgrade') {
4445: $currentstring = $token->[2];
4446: }
4447: return $currentstring;
4448: }
4449:
4450: #-- <hideweboutput> tag
4451: sub start_hideweboutput {
4452: my ($target,$token) = @_;
4453: if ($target eq 'web' || $target eq 'webgrade') {
4454: &Apache::lonxml::startredirection();
4455: }
4456: return '';
4457: }
4458:
4459: sub end_hideweboutput {
4460: my ($target,$token) = @_;
4461: my $currentstring = '';
4462: if ($target eq 'web' || $target eq 'webgrade') {
4463: $currentstring = &Apache::lonxml::endredirection();
4464: }
4465: return '';
4466: }
4467:
4468:
4469: sub image_replication {
4470: my $src = shift;
4471: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4472: #replicates eps or ps
4473: my $epssrc = my $pssrc = $src;
4474: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4475: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4476: if (not -e $epssrc && not -e $pssrc) {
4477: my $result=&Apache::lonnet::repcopy($epssrc);
4478: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4479: }
4480: return '';
4481: }
4482:
4483:
4484:
4485: sub resize_image {
4486: my ($height_param, $width_param, $scaling,
4487: $parstack, $safeeval, $depth, $cis) = @_;
4488:
4489: # First apply the scaling...
4490:
4491: $height_param = $height_param * $scaling;
4492: $width_param = $width_param * $scaling;
4493:
4494: #do we have any specified LaTeX size of the picture?
4495: my $toget='TeXwidth';
4496: if ($cis) {
4497: $toget=lc($toget);
4498: }
4499: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4500: $safeeval,$depth,$cis);
4501: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4502: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4503: $safeeval,$depth,$cis);
4504: #do we have any specified web size of the picture?
4505: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4506: $depth,1);
4507: if ($TeXwidth) {
4508: my $old_width_param=$width_param;
4509: if ($TeXwidth=~/(\d+)\s*\%/) {
4510: $width_param = $1*$env{'form.textwidth'}/100;
4511: } else {
4512: $width_param = $TeXwidth;
4513: }
4514: if ($TeXheight) {
4515: $height_param = $TeXheight;
4516: } elsif ($old_width_param) {
4517: $height_param=$TeXwidth/$old_width_param*$height_param;
4518: }
4519: } elsif ($TeXheight) {
4520: $height_param = $TeXheight;
4521: if ($height_param) {
4522: $width_param = $TeXheight/$height_param*$width_param;
4523: }
4524: } elsif ($width) {
4525: my $old_width_param=$width_param;
4526: $width_param = $width*$scaling;
4527: if ($old_width_param) {
4528: $height_param=$width_param/$old_width_param*$height_param;
4529: }
4530: }
4531: if ($width_param > $env{'form.textwidth'}) {
4532: my $old_width_param=$width_param;
4533: $width_param =0.95*$env{'form.textwidth'};
4534: if ($old_width_param) {
4535: $height_param=$width_param/$old_width_param*$height_param;
4536: }
4537: }
4538:
4539: return ($height_param, $width_param);
4540: }
4541:
4542: sub image_size {
4543: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4544:
4545: #size of image from gif/jpg/jpeg/png
4546: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4547: if (-e $ressrc) {
4548: $src = $ressrc;
4549: }
4550: my $image = Image::Magick->new;
4551: my $current_figure = $image->Read($src);
4552: my $width_param = $image->Get('width');
4553: my $height_param = $image->Get('height');
4554: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4555: undef($image);
4556:
4557: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4558: $scaling, $parstack, $safeeval,
4559: $depth, $cis);
4560:
4561: return ($height_param, $width_param);
4562: }
4563:
4564: sub image_width {
4565: my ($height, $width) = &image_size(@_);
4566: return $width;
4567: }
4568: # Not yet 100% sure this is correct in all circumstances..
4569: # due to my uncertainty about mods to image_size.
4570: #
4571: sub image_height {
4572: my ($height, $width) = &image_size(@_);
4573: return $height;
4574: }
4575:
4576: sub get_eps_image {
4577: my ($src)=@_;
4578: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4579:
4580: # In order to prevent the substitution of the alt text, we need to
4581: # be sure the orig_src file is on system now so:
4582:
4583: if (! -e $orig_src) {
4584: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4585: }
4586: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4587: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4588: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4589: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4590: &Apache::lonxml::debug("Filelocation gives: $src");
4591: if (! -e $src) {
4592: &Apache::lonxml::debug("$src does not exist");
4593: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4594: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4595: #if replication failed try to find ps file
4596: $src=~s/\.eps$/\.ps/;
4597: &Apache::lonxml::debug("Now looking for $src");
4598: #if no ps file try to replicate it.
4599: my $didrepcopy = &Apache::lonnet::repcopy($src);
4600: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4601: if ( (not -e $src) ||
4602: ($didrepcopy ne 'ok')) {
4603: &Apache::lonxml::debug("Failed to find or replicate $src");
4604:
4605: #if replication failed try to produce eps file dynamically
4606: $src=~s/\.ps$/\.eps/;
4607: my $temp_file;
4608: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4609: my $newsrc=$orig_src;
4610: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4611: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4612: print FILE ("$newsrc\n");
4613: close(FILE);
4614: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4615: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4616: if ($sext ne "") { # Put the ext. back in to uniquify.
4617: $src =~ s/\.eps$/$sext.eps/;
4618: }
4619:
4620: }
4621:
4622: }
4623: } else {
4624: # If the postscript file has spaces in its name,
4625: # LaTeX will gratuitiously vomit. Therefore
4626: # queue such files for copy with " " replaced by "_".
4627: # printout.pm will know them by their .ps or .eps extensions.
4628: my $newsrc = $orig_src;
4629: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4630: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4631: print FILE "$src\n";
4632: close FILE;
4633: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4634: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4635: }
4636: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4637: $path =~ s/ /\_/g;
4638: $file =~ s/ /\_/g;
4639: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4640: return ($path.'/',$file);
4641: }
4642:
4643: sub eps_generation {
4644: my ($src,$file,$width_param) = @_;
4645: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4646: my $temp_file = Apache::File->new('>>'.$filename);
4647: print $temp_file "$src\n";
4648: my $newsrc = $src;
4649: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4650: $newsrc=~s{/home/httpd/html/res}{};
4651: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4652: $newsrc=~s{/\./}{/};
4653: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4654: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4655: $newsrc=~s{/home/httpd/lonUsers}{};
4656: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4657: }
4658: if ($newsrc=~m{/userfiles/}) {
4659: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4660: } else {
4661: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4662: }
4663: }
4664:
4665: sub file_path {
4666: my $src=shift;
4667: my ($file,$path);
4668: if ($src =~ m!(.*)/([^/]*)$!) {
4669: $file = $2;
4670: $path = $1.'/';
4671: }
4672: return $file,$path;
4673: }
4674:
4675:
4676: sub recalc {
4677: my $argument = shift;
4678: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4679: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4680: my $value=$1;
4681: my $units=$2;
4682: if ($units eq 'cm') {
4683: $value*=10;
4684: } elsif ($units eq 'in') {
4685: $value*=25.4;
4686: } elsif ($units eq 'pc') {
4687: $value*=(25.4*12/72.27);
4688: } elsif ($units eq 'pt') {
4689: $value*=(25.4/72.27);
4690: }
4691: return $value.' mm';
4692: }
4693:
4694: sub LATEX_length {
4695: my $garbage=shift;
4696: $garbage=~s/^\s+$//;
4697: $garbage=~s/^\s+(\S.*)/$1/;#space before
4698: $garbage=~s/(.*\S)\s+$/$1/;#space after
4699: $garbage=~s/(\s)+/$1/;#only one space
4700: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4701: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4702: $garbage=~s/([^\\])\$/$1/g;#$
4703: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4704: $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;
4705: $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;
4706: $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;
4707: $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;
4708: $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;
4709: $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;
4710: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4711: #remove some other LaTeX command
4712: $garbage=~s|\\(\w+)\\|\\|g;
4713: $garbage=~s|\\(\w+)(\s*)|$2|g;
4714: $garbage=~s|\+|11|g;
4715: my $value=length($garbage);
4716: return $value;
4717: }
4718:
4719:
4720: sub align_latex_image {
4721: my ($align, $latex_rendering, $image, $width, $height) = @_;
4722: my $currentstring; # The 1/2 wrapped image.
4723: my $closure; # The closure of the wrappage.
4724:
4725: # if it's none just return it back
4726: if ($latex_rendering eq 'none') {
4727: return ($image,'');
4728: }
4729:
4730: # If there's an alignment specification we need to honor it here.
4731: # For the horizontal alignments, we will also honor the
4732: # value of the latex specfication. The default is parbox,
4733: # and that's used for illegal values too.
4734: #
4735: # Even though we set a default alignment value, the user
4736: # could have given us an illegal value. In that case we
4737: # just use the default alignment of bottom..
4738: $currentstring = "\n% figurewrapping \n";
4739: if ($align eq "top") {
4740: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4741: $closure = '}';
4742: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4743: my $offset = $height/2;
4744: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4745: $closure = '}';
4746: } elsif ($align eq "left") {
4747: if ($latex_rendering eq "parpic") {
4748: $currentstring .= '\parpic[l]{'.$image;
4749: $closure = '}';
4750: } elsif ($latex_rendering eq "parbox") {
4751: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4752: .$image;
4753: $closure = '\end{minipage}';
4754: } elsif ($latex_rendering eq "wrapfigure"
4755: || $latex_rendering ne 'none') { # wrapfig render
4756: $currentstring .=
4757: '\begin{wrapfigure}{l}{'.$width.'mm}'
4758: .'\scalebox{1.0}{'.$image;
4759: $closure = '}\end{wrapfigure}';
4760: }
4761: } elsif ($align eq "right") {
4762: if ($latex_rendering eq "parpic") {
4763: $currentstring .= '\parpic[r]{'.$image;
4764: $closure = '}';
4765: } elsif ($latex_rendering eq "parbox") {
4766: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4767: .$image;
4768: $closure = '\end{minipage}';
4769: } elsif ($latex_rendering eq "wrapfigure"
4770: || $latex_rendering ne 'none') { # wrapfig render
4771: $currentstring .=
4772: '\begin{wrapfigure}{r}{'.$width.'mm}'
4773: .'\scalebox{1.0}{'.$image;
4774: $closure = '}\end{wrapfigure}';
4775: }
4776: } else { # Bottom is also default.
4777: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4778: $currentstring .= "{$image";
4779: $closure = '}';
4780: }
4781: $currentstring .= "\n% end wrappage\n";
4782: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4783: return ($currentstring, $closure);
4784: }
4785:
4786:
4787: sub is_inside_of {
4788: my ($tagstack, $tag) = @_;
4789: my @stack = @$tagstack;
4790: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4791: if ($stack[$i] eq $tag) {
4792: return 1;
4793: }
4794: }
4795: return 0;
4796: }
4797:
4798:
4799: =pod
4800:
4801: =head1 NAME
4802:
4803: Apache::londefdef.pm
4804:
4805: =head1 SYNOPSIS
4806:
4807: Tags Default Definition Module
4808:
4809: This is part of the LearningOnline Network with CAPA project
4810: described at http://www.lon-capa.org.
4811:
4812:
4813: =head1 NOTABLE SUBROUTINES
4814:
4815: =over
4816:
4817: =item start_hideweboutput()
4818:
4819: =item end_hideweboutput()
4820:
4821: =item image_replication()
4822:
4823: =item resize_image()
4824:
4825: Get correct sizing parameter for an image given
4826: it's initial ht. and wid. This allows sizing of
4827: images that are generated on-the-fly (e.g. gnuplot)
4828: as well as serving as a utility for image_size.
4829:
4830: Parameter:
4831: height_param
4832: width_param - Initial picture dimensions.
4833: scaling - A scale factor.
4834: parstack, - the current stack of tag attributes
4835: from the xml parser
4836: safeeval, - pointer to the safespace
4837: depth, - from what level in the stack to look for attributes
4838: (assumes -1 if unspecified)
4839: cis - look for attrubutes case insensitively
4840: (assumes false)
4841:
4842: Returns:
4843: height, width - new dimensions.
4844:
4845: =item image_size()
4846:
4847: =item image_width()
4848:
4849: =item image_height()
4850:
4851: =item get_eps_image()
4852:
4853: =item eps_generation()
4854:
4855: =item file_path()
4856:
4857: =item recalc()
4858:
4859: Converts a measurement in to mm from any of
4860: the other valid LaTeX units of measure.
4861: If the units of measure are missing from the
4862: parameter, it is assumed to be in and returned
4863: with mm units of measure
4864:
4865: =item LATEX_length()
4866:
4867: =item align_latex_image()
4868:
4869: Wrap image 'stuff' inside of the LaTeX required to implement
4870: alignment:
4871: align_tex_image(align, latex_rendering, image)
4872: Where:
4873: align - The HTML alignment specification.
4874: latex_rendering - rendering hint for latex.
4875: image - The LaTeX needed to insert the image itsef.
4876: width,height - dimensions of the image.
4877: Returns:
4878: The 1/2 wrapped image and the stuff required to close the
4879: wrappage. This allows e.g. randomlabel to insert more stuff
4880: into the closure.
4881:
4882:
4883: =item is_inside_of($tagstack, $tag)
4884: This sub returns true if the current state of Xml processing is inside of the tag.
4885: Parameters:
4886: tagstack - The tagstack from the parser.
4887: tag - The tag (without the <>'s.).
4888: Sample usage:
4889: if (is_inside_of($tagstack "table")) {
4890: I'm in a table....
4891: }
4892:
4893:
4894:
4895: =back
4896:
4897: =cut
4898:
4899:
4900: 1;
4901: __END__
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