1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.415.4.3 2010/12/25 00:10:16 raeburn Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use Apache::File();
47: use Image::Magick;
48: use Apache::lonmenu();
49: use Apache::lonmeta();
50: use Apache::lonlocal;
51: use Apache::loncommon();
52: use Apache::Constants qw(:common);
53: use File::Basename;
54: use LONCAPA();
55: # use Data::Dumper;
56:
57: BEGIN {
58:
59: &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'));
60:
61: }
62:
63:
64: sub initialize_londefdef {
65: $Apache::londefdef::TD_redirection=0;
66: @Apache::londefdef::table = ();
67: $Apache::londefdef::select=0;
68: undef(@Apache::londefdef::description);
69: @Apache::londefdef::DD=(0);
70: @Apache::londefdef::DT=(0);
71: @Apache::londefdef::seenDT=(0);
72: $Apache::londefdef::list_index=0;
73: undef($Apache::londefdef::head);
74: undef($Apache::londefdef::title);
75: }
76:
77: #======================= TAG SUBROUTINES =====================
78: #-- <output>
79: sub start_output {
80: my ($target) = @_;
81: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
82: return '';
83: }
84: sub end_output {
85: my ($target) = @_;
86: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
87: return '';
88: }
89: #-- <m> tag
90: sub start_m {
91: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
92: my $currentstring = '';
93: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
94: if ($target eq 'web' || $target eq 'analyze') {
95: &Apache::lonxml::debug("M is starting with:$inside:");
96: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
97: if ($eval eq 'on') {
98: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
99: #&Apache::lonxml::debug("M is evaluated to:$inside:");
100: }
101: my $tex = $inside;
102: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
103: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
104: if ($Apache::lontexconvert::errorstring) {
105: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
106: $tex = &HTML::Entities::encode($tex,'<>&"');
107: my ($linenumber) =
108: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
109: if (defined($linenumber)) {
110: my @tex=split("\n",$tex);
111: $tex[$linenumber]='<b><font color="red">'.
112: $tex[$linenumber].'</font></b>';
113: $tex=join("\n",@tex);
114: }
115: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
116: $Apache::lontexconvert::errorstring='';
117: }
118: #&Apache::lonxml::debug("M is ends with:$currentstring:");
119: $Apache::lonxml::post_evaluate=0;
120: } elsif ($target eq 'tex') {
121:
122: $currentstring = $inside;
123: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
124: if ($eval eq 'on') {
125: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
126: }
127: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
128: # detect simple math mode entry exits, and convert them
129: # to use \ensuremath ... unless there's a \verb inside.
130: if (! ($currentstring=~/\\verb/)) {
131: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
132: $currentstring=~s/^(\s*)\$/$1/;
133: $currentstring=~s/\$(\s*)$/$1/;
134: $currentstring='\ensuremath{'.$currentstring.'}';
135: }
136: }
137: $Apache::lonxml::post_evaluate=0;
138: }
139: return $currentstring;
140: }
141:
142: sub end_m {
143: my ($target,$token) = @_;
144: my $currentstring = '';
145: if ($target eq 'tex') {
146: $currentstring = "";
147: }
148: return $currentstring;
149: }
150:
151: sub start_tthoption {
152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
153: my $result;
154: if ($target eq 'web' || $target eq 'webgrade') {
155: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
156: $style);
157: $inside=~s/^\s*//;
158: if ($env{'browser.mathml'}) {
159: &tth::ttmoptions($inside);
160: } else {
161: &tth::tthoptions($inside);
162: }
163: }
164: return $result;
165: }
166:
167: sub end_tthoption {
168: my ($target,$token) = @_;
169: my $result;
170: return $result;
171: }
172:
173: #-- <html> tag (end tag optional)
174: sub start_html {
175: my ($target,$token) = @_;
176: my $currentstring = '';
177: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
178: # start_body() takes care of emitting the <html>
179: } elsif ($target eq 'tex') {
180:
181: $currentstring .= &latex_header();
182: }
183: return $currentstring;
184: }
185:
186: sub end_html {
187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
188: my $currentstring = '';
189: if ($target eq 'web' || $target eq 'webgrade') {
190: # end_body takes care of the </html>
191: }
192: return $currentstring;
193: }
194:
195: #-- <head> tag (end tag optional)
196: sub start_head {
197: my ($target,$token) = @_;
198: my $currentstring = '';
199: if ($target eq 'web' || $target eq 'webgrade') {
200: &Apache::lonxml::startredirection();
201: }
202: return $currentstring;
203: }
204:
205: sub end_head {
206: my ($target,$token) = @_;
207: my $currentstring = '';
208: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
209: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
210: # in case there is a </head> but no <head>
211: if ($Apache::lonxml::redirection) {
212: $Apache::londefdef::head = &Apache::lonxml::endredirection();
213: }
214: }
215: return $currentstring;
216: }
217:
218: #-- <map> tag (end tag required)
219: sub start_map {
220: my ($target,$token) = @_;
221: my $currentstring = '';
222: if ($target eq 'web' || $target eq 'webgrade') {
223: $currentstring = $token->[4];
224: }
225: return $currentstring;
226: }
227:
228: sub end_map {
229: my ($target,$token) = @_;
230: my $currentstring = '';
231: if ($target eq 'web' || $target eq 'webgrade') {
232: $currentstring = $token->[2];
233: }
234: return $currentstring;
235: }
236:
237: #-- <select> tag (end tag required)
238: sub start_select {
239: my ($target,$token) = @_;
240: my $currentstring = '';
241: if ($target eq 'web' || $target eq 'webgrade') {
242: $currentstring = $token->[4];
243: } elsif ($target eq 'tex') {
244: $Apache::londefdef::select=0;
245: }
246: return $currentstring;
247: }
248:
249: sub end_select {
250: my ($target,$token) = @_;
251: my $currentstring = '';
252: if ($target eq 'web' || $target eq 'webgrade') {
253: $currentstring = $token->[2];
254: }
255: return $currentstring;
256: }
257:
258: #-- <option> tag (end tag optional)
259: sub start_option {
260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
261: my $currentstring = '';
262: if ($target eq 'web' || $target eq 'webgrade') {
263: $currentstring = $token->[4];
264: } elsif ($target eq 'tex') {
265: $Apache::londefdef::select++;
266: if ($Apache::londefdef::select == 1) {
267: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
268: } else {
269: $currentstring='\keephidden{';
270: }
271: }
272: return $currentstring;
273: }
274:
275: sub end_option {
276: my ($target,$token) = @_;
277: my $currentstring = '';
278: if ($target eq 'web' || $target eq 'webgrade') {
279: $currentstring = $token->[2];
280: } elsif ($target eq 'tex') {
281: $currentstring='}';
282: }
283: return $currentstring;
284: }
285:
286: #-- <input> tag (end tag forbidden)
287: sub start_input {
288: my ($target,$token) = @_;
289: my $currentstring = '';
290: if ($target eq 'web' || $target eq 'webgrade') {
291: $currentstring = $token->[4];
292: }
293: return $currentstring;
294: }
295:
296: sub end_input {
297: my ($target,$token) = @_;
298: my $currentstring = '';
299: if ($target eq 'web' || $target eq 'webgrade') {
300: $currentstring = $token->[2];
301: }
302: return $currentstring;
303: }
304:
305: #-- <textarea> tag (end tag required)
306: sub start_textarea {
307: my ($target,$token) = @_;
308: my $currentstring = '';
309: if ($target eq 'web' || $target eq 'webgrade') {
310: $currentstring = $token->[4];
311: }
312: return $currentstring;
313: }
314:
315: sub end_textarea {
316: my ($target,$token) = @_;
317: my $currentstring = '';
318: if ($target eq 'web' || $target eq 'webgrade') {
319: $currentstring = $token->[2];
320: }
321: return $currentstring;
322: }
323:
324: #-- <form> tag (end tag required)
325: sub start_form {
326: my ($target,$token) = @_;
327: my $currentstring = '';
328: if ($target eq 'web' || $target eq 'webgrade') {
329: $currentstring = $token->[4];
330: }
331: return $currentstring;
332: }
333:
334: sub end_form {
335: my ($target,$token) = @_;
336: my $currentstring = '';
337: if ($target eq 'web' || $target eq 'webgrade') {
338: $currentstring = $token->[2];
339: }
340: return $currentstring;
341: }
342:
343: #-- <title> tag (end tag required)
344: sub start_title {
345: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
346: my $currentstring = '';
347: if ($target eq 'web' || $target eq 'webgrade') {
348: $Apache::londefdef::title =
349: &Apache::lonxml::get_all_text('/title',$parser,$style);
350: } elsif ($target eq 'tex') {
351: $currentstring .= '\keephidden{Title of the document: '
352: }
353: if ($target eq 'meta') {
354: $currentstring='<title>';
355: &start_output($target);
356: }
357: return $currentstring;
358: }
359:
360: sub end_title {
361: my ($target,$token) = @_;
362: my $currentstring = '';
363: if ($target eq 'web' || $target eq 'webgrade') {
364: # start_title takes care of swallowing the title
365: } elsif ($target eq 'tex') {
366: $currentstring .= '}';
367: }
368: if ($target eq 'meta') {
369: &end_output($target);
370: $currentstring='</title>';
371: }
372: return $currentstring;
373: }
374:
375: #-- <meta> tag (end tag forbidden)
376: sub start_meta {
377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
378: my $currentstring = '';
379: if ($target eq 'web' || $target eq 'webgrade') {
380: my $args='';
381: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
382: if ($args eq '') {
383: &Apache::lonxml::get_all_text("/meta",$parser,$style);
384: } else {
385: $currentstring = $token->[4];
386: }
387: } elsif ($target eq 'meta') {
388: unless (&Apache::lonxml::get_param
389: ('http-equiv',$parstack,$safeeval,undef,1)) {
390: my $name=$token->[2]->{'name'};
391: $name=~tr/A-Z/a-z/;
392: $name=~s/\s/\_/gs;
393: $name=~s/\W//gs;
394: if ($name) {
395: $currentstring='<'.$name;
396: my $display=&Apache::lonxml::get_param
397: ('display',$parstack,$safeeval,undef,1);
398: if ($display) {
399: $display=~s/\"/\'/g;
400: $currentstring.=' display="'.$display.'"';
401: }
402: $currentstring.='>'.
403: &Apache::lonxml::get_param
404: ('content',$parstack,$safeeval,undef,1).
405: '</'.$name.'>';
406: }
407: my $display=&Apache::lonxml::get_param
408: ('display',$parstack,$safeeval,undef,1);
409: if ($display) {
410: $display=&HTML::Entities::encode($display,'<>&"');
411: $currentstring.='<'.$name.'.display>'.$display.
412: '</'.$name.'.display>';
413: }
414: }
415: } elsif ($target eq 'tex') {
416: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
417: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
418: if ((not defined $content) && (not defined $name)) {
419: &Apache::lonxml::startredirection();
420: }
421: } elsif ($target eq 'edit') {
422: $currentstring .= &Apache::edit::tag_start($target,$token);
423: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
424: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
425: $currentstring .= &Apache::edit::end_row();
426: } elsif ($target eq 'modified') {
427: my $constructtag =
428: &Apache::edit::get_new_args($token,$parstack,$safeeval,
429: 'name','content');
430: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
431: }
432: return $currentstring;
433: }
434:
435: sub end_meta {
436: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
437: my $currentstring = '';
438: if ($target eq 'web' || $target eq 'webgrade') {
439: my $args='';
440: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
441: if ($args ne '') {
442: $currentstring = $token->[4];
443: }
444: } elsif ($target eq 'tex') {
445: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
446: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
447: if ((not defined $content) && (not defined $name)) {
448: &Apache::lonxml::endredirection();
449: }
450: }
451: return $currentstring;
452: }
453:
454: sub insert_meta {
455: return '
456: <meta />';
457: }
458:
459: # accessrule
460: sub start_accessrule {
461: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
462: my $currentstring = '';
463: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
464: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
465: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
466: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
467:
468: my ($dom,$crs,$sec,$separator);
469: if ($type eq 'user') {
470: ($dom,$crs,$sec)=split(m{/},$realm);
471: $crs = &LONCAPA::clean_username($crs);
472: $separator = '/';
473: } else {
474: ($dom,$crs,$sec)=split(/\_/,$realm);
475: $crs = &LONCAPA::clean_courseid($crs);
476: $separator = '_';
477: }
478: $dom = &LONCAPA::clean_domain($dom);
479:
480: $sec =~s/\W//;
481: $realm = $dom;
482: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
483: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
484: $role=~s/\W//g;
485:
486: if ($target eq 'web') {
487: my $args='';
488: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
489: if ($args eq '') {
490: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
491: } else {
492: $currentstring = $token->[4];
493: }
494: }
495: if ($target eq 'meta') {
496: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
497: }
498: return $currentstring;
499: }
500:
501: sub end_accessrule {
502: my ($target,$token,$tagstack,$parstack,$parser) = @_;
503: my $currentstring = '';
504: if ($target eq 'web') {
505: my $args='';
506: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
507: if ($args ne '') {
508: $currentstring = $token->[4];
509: }
510: }
511: return $currentstring;
512: }
513:
514: sub generate_css_links {
515: my $links;
516: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
517: if ($css_href =~ /\S/) {
518: &Apache::lonxml::extlink($css_href);
519: $links .=
520: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
521: }
522: return $links;
523: }
524:
525: #-- <body> tag (end tag required)
526: sub start_body {
527: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
528: my $currentstring = '';
529:
530: if ($target eq 'web' || $target eq 'webgrade') {
531: if ($Apache::lonhomework::parsing_a_problem) {
532: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
533: return '';
534: }
535:
536: if (&is_inside_of($tagstack, "head")) {
537: &end_head(@_);
538: }
539:
540: my $extra_head = &generate_css_links();
541:
542: # Breadcrumbs
543: &Apache::lonhtmlcommon::clear_breadcrumbs();
544: if ($env{'request.state'} eq 'construct') {
545: &Apache::lonhtmlcommon::add_breadcrumb({
546: 'text' => 'Construction Space',
547: 'href' => &Apache::loncommon::authorspace(),
548: });
549: &Apache::lonhtmlcommon::add_breadcrumb({
550: 'text' => 'HTML Editor',
551: 'href' => '',
552: });
553: # breadcrumbs (and tools) will be created
554: # in start_page->bodytag->innerregister
555: } else {
556: # FIXME Where are we?
557: }
558:
559: $currentstring =
560: &Apache::loncommon::start_page($Apache::londefdef::title,
561: $Apache::londefdef::head
562: .$extra_head,
563: {'add_entries' => $token->[2],
564: # 'no_title' => 1,
565: 'force_register' => 1});
566:
567: my $header = '';
568: if ($env{'request.state'} ne 'published' &&
569: $env{'request.state'} ne 'construct') {
570: $header=&Apache::lonmenu::constspaceform();
571: }
572: if ($env{'request.state'} ne 'published') {
573: $header.=&Apache::londefdef::edit_controls();
574: }
575: if ($env{'request.state'} eq 'construct') {
576: $currentstring.=&Apache::loncommon::head_subbox(
577: &Apache::loncommon::CSTR_pageheader()
578: .$header);
579: } elsif ($env{'request.state'} eq 'edit') {
580: $currentstring.=&Apache::loncommon::head_subbox($header);
581: }
582: $currentstring.=&Apache::lonxml::message_location();
583: } elsif ($target eq 'tex') {
584: $currentstring = ''; # '\begin{document}' is in header.
585: }
586:
587: return $currentstring;
588: }
589:
590: sub edit_controls {
591: my ($nochgview) = @_;
592: my $result .= '
593: <form method="post" action="">
594: <div class="LC_edit_problem_header">';
595: unless ($nochgview) {
596: $result .= '
597: <div class="LC_edit_problem_header_row1">'.
598: &Apache::lonxml::renderingoptions().'
599: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
600: </div>';
601: }
602: $result .= '
603: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
604: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
605: my $viewtext = &mt('Course View');
606: if (&Apache::loncommon::course_type() eq 'Community') {
607: $viewtext = &mt('Community View');
608: }
609: $result .= (' ' x 3).'<input type="button" value="'.
610: $viewtext.'" onclick="javascript:location.href=currentURL" />';
611: }
612: $result .= '</div>
613: </div>
614: </form>
615: ';
616: return $result;
617: }
618:
619: sub end_body {
620: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
621: my $currentstring = &end_p(); # Close off unclosed <p>
622: if ($target eq 'web' || $target eq 'webgrade') {
623: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
624: } elsif ($target eq 'tex') {
625: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
626: }
627: return $currentstring;
628: }
629:
630: # \begin{center} causes a new paragprah spacing that looks odd inside
631: # of a table cell. Same at the end of a \center but with a slightly
632: # larger space .. hence center_correction and center_end_correction.
633: #
634: sub center_correction { return '\vspace*{-6 mm}'; }
635: sub center_end_correction { return '\vspace*{-7 mm}'; }
636:
637: #-- <center> tag (end tag required)
638: sub start_center {
639: my ($target,$token,$tagstack) = @_;
640: my $currentstring = &end_p(); # Close off any prior para.
641: if ($target eq 'web' || $target eq 'webgrade') {
642: $currentstring .= $token->[4];
643: } elsif ($target eq 'tex') {
644: if (&is_inside_of($tagstack, "table")) {
645: $currentstring .= ¢er_correction();
646: }
647: $currentstring .= '\begin{center}';
648: }
649: return $currentstring;
650: }
651:
652: sub end_center {
653: my ($target,$token,$tagstack) = @_;
654: my $currentstring = '';
655: if ($target eq 'web' || $target eq 'webgrade') {
656: $currentstring = $token->[2];
657: } elsif ($target eq 'tex') {
658: $currentstring = '\end{center}';
659: if (&is_inside_of($tagstack, "table")) {
660: $currentstring .= ¢er_end_correction();
661: }
662: }
663: return $currentstring;
664: }
665:
666: #-- <b> tag (end tag required)
667: # NOTE: In TeX mode disables internal <p>
668: sub start_b {
669: my ($target,$token) = @_;
670: my $currentstring = '';
671: if ($target eq 'web' || $target eq 'webgrade') {
672: $currentstring = $token->[4];
673: } elsif ($target eq 'tex') {
674: &disable_para();
675: $currentstring .= '\textbf{';
676: }
677: return $currentstring;
678: }
679:
680: sub end_b {
681: my ($target,$token) = @_;
682: my $currentstring = '';
683: if ($target eq 'web' || $target eq 'webgrade') {
684: $currentstring = $token->[2];
685: } elsif ($target eq 'tex') {
686: &enable_para();
687: $currentstring = '}';
688: }
689: return $currentstring;
690: }
691:
692: #-- <strong> tag (end tag required)
693: # NOTE: in TeX mode disables internal <p>
694: sub start_strong {
695: my ($target,$token) = @_;
696: my $currentstring = '';
697: if ($target eq 'web' || $target eq 'webgrade') {
698: $currentstring = $token->[4];
699: } elsif ($target eq 'tex') {
700: &disable_para();
701: $currentstring = '\textbf{';
702: }
703: return $currentstring;
704: }
705:
706: sub end_strong {
707: my ($target,$token) = @_;
708: my $currentstring = '';
709: if ($target eq 'web' || $target eq 'webgrade') {
710: $currentstring = $token->[2];
711: } elsif ($target eq 'tex') {
712: &enable_para();
713: $currentstring = '}';
714: }
715: return $currentstring;
716: }
717:
718: #-- <h1> tag (end tag required)
719: sub start_h1 {
720: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
721: my $currentstring = &end_p(); # Close off any prior para.
722: if ($target eq 'web' || $target eq 'webgrade') {
723: $currentstring .= $token->[4];
724: } elsif ($target eq 'tex') {
725: my $pre;
726: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
727: if ($align eq 'center') {
728: $pre='\begin{center}';
729: } elsif ($align eq 'left') {
730: $pre='\rlap{';
731: } elsif ($align eq 'right') {
732: $pre=' \hfill \llap{';
733: }
734: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
735: if (not defined $TeXsize) {$TeXsize="large";}
736: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
737: } elsif ($target eq 'meta') {
738: $currentstring.='<subject>';
739: &start_output($target);
740: }
741: return $currentstring;
742: }
743:
744: sub end_h1 {
745: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
746: my $currentstring = '';
747: if ($target eq 'web' || $target eq 'webgrade') {
748: $currentstring .= $token->[2];
749: } elsif ($target eq 'tex') {
750: my $post='\vskip 0 mm ';
751: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
752: if ($align eq 'center') {
753: $post='\end{center}';
754: } elsif ($align eq 'left') {
755: $post='} \hfill'.'\vskip 0 mm ';
756: } elsif ($align eq 'right') {
757: $post='}'.'\vskip 0 mm ';
758: }
759: $currentstring .= '}}'.$post;
760: } elsif ($target eq 'meta') {
761: &end_output($target);
762: $currentstring='</subject>';
763: }
764: return $currentstring;
765: }
766:
767: #-- <h2> tag
768: sub start_h2 {
769: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
770: my $currentstring = &end_p(); # Close off any prior para.
771: if ($target eq 'web' || $target eq 'webgrade') {
772: $currentstring .= $token->[4];
773: } elsif ($target eq 'tex') {
774: my $pre;
775: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
776: if ($align eq 'center') {
777: $pre='\begin{center}';
778: } elsif ($align eq 'left') {
779: $pre='\rlap{';
780: } elsif ($align eq 'right') {
781: $pre=' \hfill \llap{';
782: }
783: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
784: if (not defined $TeXsize) {$TeXsize="large";}
785: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
786: }
787: return $currentstring;
788: }
789:
790: sub end_h2 {
791: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
792: my $currentstring = '';
793: if ($target eq 'web' || $target eq 'webgrade') {
794: $currentstring .= $token->[2];
795: } elsif ($target eq 'tex') {
796: my $post='\vskip 0 mm ';
797: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
798: if ($align eq 'center') {
799: $post='\end{center}';
800: } elsif ($align eq 'left') {
801: $post='} \hfill'.'\vskip 0 mm ';
802: } elsif ($align eq 'right') {
803: $post='}'.'\vskip 0 mm ';
804: }
805: $currentstring .= '}}'.$post;
806: }
807: return $currentstring;
808: }
809:
810: #-- <h3> tag
811: sub start_h3 {
812: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
813: my $currentstring = &end_p(); # Close off any prior para.
814: if ($target eq 'web' || $target eq 'webgrade') {
815: $currentstring .= $token->[4];
816: } elsif ($target eq 'tex') {
817: my $pre;
818: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
819: if ($align eq 'center') {
820: $pre='\begin{center}';
821: } elsif ($align eq 'left') {
822: $pre='\rlap{';
823: } elsif ($align eq 'right') {
824: $pre=' \hfill \llap{';
825: }
826: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
827: if (not defined $TeXsize) {$TeXsize="large";}
828: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
829: }
830: return $currentstring;
831: }
832:
833: sub end_h3 {
834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
835: my $currentstring = '';
836: if ($target eq 'web' || $target eq 'webgrade') {
837: $currentstring .= $token->[2];
838: } elsif ($target eq 'tex') {
839: my $post='\vskip 0 mm ';
840: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
841: if ($align eq 'center') {
842: $post='\end{center}';
843: } elsif ($align eq 'left') {
844: $post='} \hfill'.'\vskip 0 mm ';
845: } elsif ($align eq 'right') {
846: $post='}'.'\vskip 0 mm ';
847: }
848: $currentstring .= '}}'.$post;
849: }
850: return $currentstring;
851: }
852:
853: #-- <h4> tag
854: sub start_h4 {
855: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
856: my $currentstring = &end_p(); # Close off any prior para.
857: if ($target eq 'web' || $target eq 'webgrade') {
858: $currentstring .= $token->[4];
859: } elsif ($target eq 'tex') {
860: my $pre;
861: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
862: if ($align eq 'center') {
863: $pre='\begin{center}';
864: } elsif ($align eq 'left') {
865: $pre='\rlap{';
866: } elsif ($align eq 'right') {
867: $pre=' \hfill \llap{';
868: }
869: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
870: if (not defined $TeXsize) {$TeXsize="large";}
871: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
872: }
873: return $currentstring;
874: }
875:
876: sub end_h4 {
877: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
878: my $currentstring = '';
879: if ($target eq 'web' || $target eq 'webgrade') {
880: $currentstring .= $token->[2];
881: } elsif ($target eq 'tex') {
882: my $post='\vskip 0 mm ';
883: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
884: if ($align eq 'center') {
885: $post='\end{center}';
886: } elsif ($align eq 'left') {
887: $post='} \hfill'.'\vskip 0 mm ';
888: } elsif ($align eq 'right') {
889: $post='}'.'\vskip 0 mm ';
890: }
891: $currentstring .= '}}'.$post;
892: }
893: return $currentstring;
894: }
895:
896: #-- <h5> tag
897: sub start_h5 {
898: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
899: my $currentstring = &end_p(); # Close off any prior paras.
900: if ($target eq 'web' || $target eq 'webgrade') {
901: $currentstring .= $token->[4];
902: } elsif ($target eq 'tex') {
903: my $pre;
904: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
905: if ($align eq 'center') {
906: $pre='\begin{center}';
907: } elsif ($align eq 'left') {
908: $pre='\rlap{';
909: } elsif ($align eq 'right') {
910: $pre=' \hfill \llap{';
911: }
912: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
913: if (not defined $TeXsize) {$TeXsize="large";}
914: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
915: }
916: return $currentstring;
917: }
918:
919: sub end_h5 {
920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
921: my $currentstring = '';
922: if ($target eq 'web' || $target eq 'webgrade') {
923: $currentstring .= $token->[2];
924: } elsif ($target eq 'tex') {
925: my $post='\vskip 0 mm ';
926: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
927: if ($align eq 'center') {
928: $post='\end{center}';
929: } elsif ($align eq 'left') {
930: $post='} \hfill'.'\vskip 0 mm ';
931: } elsif ($align eq 'right') {
932: $post='}'.'\vskip 0 mm ';
933: }
934: $currentstring .= '}}'.$post;
935: }
936: return $currentstring;
937: }
938:
939: #-- <h6> tag
940: sub start_h6 {
941: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
942: my $currentstring = &end_p(); # Close off any prior paras.
943: if ($target eq 'web' || $target eq 'webgrade') {
944: $currentstring .= $token->[4];
945: } elsif ($target eq 'tex') {
946: my $pre;
947: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
948: if ($align eq 'center') {
949: $pre='\begin{center}';
950: } elsif ($align eq 'left') {
951: $pre='\rlap{';
952: } elsif ($align eq 'right') {
953: $pre=' \hfill \llap{';
954: }
955: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
956: if (not defined $TeXsize) {$TeXsize="large";}
957: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
958: }
959: return $currentstring;
960: }
961:
962: sub end_h6 {
963: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
964: my $currentstring = '';
965: if ($target eq 'web' || $target eq 'webgrade') {
966: $currentstring .= $token->[2];
967: } elsif ($target eq 'tex') {
968: my $post='\vskip 0 mm ';
969: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
970: if ($align eq 'center') {
971: $post='\end{center}';
972: } elsif ($align eq 'left') {
973: $post='} \hfill'.'\vskip 0 mm ';
974: } elsif ($align eq 'right') {
975: $post='}'.'\vskip 0 mm ';
976: }
977: $currentstring .= '}}'.$post;
978: }
979: return $currentstring;
980: }
981:
982: #--- <cite> tag (end tag required)
983: sub start_cite {
984: my ($target,$token) = @_;
985: my $currentstring = '';
986: if ($target eq 'web' || $target eq 'webgrade') {
987: $currentstring .= $token->[4];
988: } elsif ($target eq 'tex') {
989: $currentstring .= '\textit{';
990: }
991: return $currentstring;
992: }
993:
994: sub end_cite {
995: my ($target,$token) = @_;
996: my $currentstring = '';
997: if ($target eq 'web' || $target eq 'webgrade') {
998: $currentstring .= $token->[2];
999: } elsif ($target eq 'tex') {
1000: $currentstring .= '}';
1001: }
1002: return $currentstring;
1003: }
1004:
1005: #-- <i> tag (end tag required)
1006: sub start_i {
1007: my ($target,$token) = @_;
1008: my $currentstring = '';
1009: if ($target eq 'web' || $target eq 'webgrade') {
1010: $currentstring .= $token->[4];
1011: } elsif ($target eq 'tex') {
1012: $currentstring .= '\textit{';
1013: }
1014: return $currentstring;
1015: }
1016:
1017: sub end_i {
1018: my ($target,$token) = @_;
1019: my $currentstring = '';
1020: if ($target eq 'web' || $target eq 'webgrade') {
1021: $currentstring .= $token->[2];
1022: } elsif ($target eq 'tex') {
1023: $currentstring .= '}';
1024: }
1025: return $currentstring;
1026: }
1027:
1028: #-- <address> tag (end tag required)
1029: sub start_address {
1030: my ($target,$token) = @_;
1031: my $currentstring = '';
1032: if ($target eq 'web' || $target eq 'webgrade') {
1033: $currentstring .= $token->[4];
1034: } elsif ($target eq 'tex') {
1035: $currentstring .= '\textit{';
1036: }
1037: return $currentstring;
1038: }
1039:
1040: sub end_address {
1041: my ($target,$token) = @_;
1042: my $currentstring = '';
1043: if ($target eq 'web' || $target eq 'webgrade') {
1044: $currentstring .= $token->[2];
1045: } elsif ($target eq 'tex') {
1046: $currentstring .= '}';
1047: }
1048: return $currentstring;
1049: }
1050:
1051: #-- <dfn> tag (end tag required)
1052: sub start_dfn {
1053: my ($target,$token) = @_;
1054: my $currentstring = '';
1055: if ($target eq 'web' || $target eq 'webgrade') {
1056: $currentstring .= $token->[4];
1057: } elsif ($target eq 'tex') {
1058: $currentstring .= '\textit{';
1059: }
1060: return $currentstring;
1061: }
1062:
1063: sub end_dfn {
1064: my ($target,$token) = @_;
1065: my $currentstring = '';
1066: if ($target eq 'web' || $target eq 'webgrade') {
1067: $currentstring .= $token->[2];
1068: } elsif ($target eq 'tex') {
1069: $currentstring .= '}';
1070: }
1071: return $currentstring;
1072: }
1073:
1074: #-- <tt> tag (end tag required)
1075: sub start_tt {
1076: my ($target,$token) = @_;
1077: my $currentstring = '';
1078: if ($target eq 'web' || $target eq 'webgrade') {
1079: $currentstring .= $token->[4];
1080: } elsif ($target eq 'tex') {
1081: $currentstring .= '\texttt{';
1082: }
1083: return $currentstring;
1084: }
1085:
1086: sub end_tt {
1087: my ($target,$token) = @_;
1088: my $currentstring = '';
1089: if ($target eq 'web' || $target eq 'webgrade') {
1090: $currentstring .= $token->[2];
1091: } elsif ($target eq 'tex') {
1092: $currentstring .= '}';
1093: }
1094: return $currentstring;
1095: }
1096:
1097: #-- <kbd> tag (end tag required)
1098: sub start_kbd {
1099: my ($target,$token) = @_;
1100: my $currentstring = '';
1101: if ($target eq 'web' || $target eq 'webgrade') {
1102: $currentstring .= $token->[4];
1103: } elsif ($target eq 'tex') {
1104: $currentstring .= '\texttt{';
1105: }
1106: return $currentstring;
1107: }
1108:
1109: sub end_kbd {
1110: my ($target,$token) = @_;
1111: my $currentstring = '';
1112: if ($target eq 'web' || $target eq 'webgrade') {
1113: $currentstring .= $token->[2];
1114: } elsif ($target eq 'tex') {
1115: $currentstring .= '}';
1116: }
1117: return $currentstring;
1118: }
1119:
1120: #-- <code> tag (end tag required)
1121: sub start_code {
1122: my ($target,$token) = @_;
1123: my $currentstring = '';
1124: if ($target eq 'web' || $target eq 'webgrade') {
1125: $currentstring .= $token->[4];
1126: } elsif ($target eq 'tex') {
1127: $currentstring .= '\texttt{';
1128: }
1129: return $currentstring;
1130: }
1131:
1132: sub end_code {
1133: my ($target,$token) = @_;
1134: my $currentstring = '';
1135: if ($target eq 'web' || $target eq 'webgrade') {
1136: $currentstring .= $token->[2];
1137: } elsif ($target eq 'tex') {
1138: $currentstring .= '}';
1139: }
1140: return $currentstring;
1141: }
1142:
1143: #-- <em> tag (end tag required)
1144: sub start_em {
1145: my ($target,$token) = @_;
1146: my $currentstring = '';
1147: if ($target eq 'web' || $target eq 'webgrade') {
1148: $currentstring .= $token->[4];
1149: } elsif ($target eq 'tex') {
1150: $currentstring .= '\emph{';
1151: }
1152: return $currentstring;
1153: }
1154:
1155: sub end_em {
1156: my ($target,$token) = @_;
1157: my $currentstring = '';
1158: if ($target eq 'web' || $target eq 'webgrade') {
1159: $currentstring .= $token->[2];
1160: } elsif ($target eq 'tex') {
1161: $currentstring .= '}';
1162: }
1163: return $currentstring;
1164: }
1165:
1166: #-- <q> tag (end tag required)
1167: sub start_q {
1168: my ($target,$token) = @_;
1169: my $currentstring = '';
1170: if ($target eq 'web' || $target eq 'webgrade') {
1171: $currentstring .= $token->[4];
1172: } elsif ($target eq 'tex') {
1173: $currentstring .= '\emph{';
1174: }
1175: return $currentstring;
1176: }
1177:
1178: sub end_q {
1179: my ($target,$token) = @_;
1180: my $currentstring = '';
1181: if ($target eq 'web' || $target eq 'webgrade') {
1182: $currentstring .= $token->[2];
1183: } elsif ($target eq 'tex') {
1184: $currentstring .= '}';
1185: }
1186: return $currentstring;
1187: }
1188:
1189: # <p> is a bit strange since it does not require a closing </p>
1190: # However in latex, we must often output closing stuff to end
1191: # environments and {}'s etc. Therefore we do all the work
1192: # of figuring out the ending strings in the start tag processing,
1193: # and provide a mechanism to output the stop text external
1194: # to tag processing.
1195: #
1196: {
1197:
1198: my $closing_string = ''; # String required to close <p>
1199:
1200: # Some tags are <p> fragile meaning that <p> inside of them
1201: # does not work within TeX mode. This is managed via the
1202: # counter below:
1203: #
1204:
1205: my $para_disabled = 0;
1206:
1207: sub disable_para {
1208: $para_disabled++;
1209: }
1210: sub enable_para {
1211: $para_disabled--;
1212: }
1213:
1214:
1215: #-- <p> tag (end tag optional)
1216: #optional attribute - align="center|left|right"
1217: sub start_p {
1218: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1219: my $currentstring = '';
1220: if ($target eq 'web' || $target eq 'webgrade') {
1221: $currentstring .= &end_p(); # close off prior para if in progress.
1222: $currentstring .= $token->[4];
1223: if (! ($currentstring =~ /\//)) {
1224: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1225: }
1226: } elsif ($target eq 'tex' && !$para_disabled) {
1227:
1228: $currentstring .= &end_p(); # close off prior para if in progress.
1229: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1230: if ($align eq 'center') {
1231: $currentstring .='\begin{center}\par ';
1232: $closing_string = '\end{center}';
1233: if (&is_inside_of($tagstack, "table")) {
1234: $currentstring = ¢er_correction().$currentstring;
1235: }
1236: } elsif ($align eq 'right') {
1237: $currentstring.="\n".'{\flushright ';
1238: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1239: $closing_string= "}\n";
1240: } elsif ($align eq 'left') {
1241: $currentstring.= "\n".'{\flushleft ';
1242: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1243: $closing_string = "}\n";
1244: } else {
1245: $currentstring.='\par ';
1246: if (&is_inside_of($tagstack, 'table')) {
1247: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1248: } else {
1249: $closing_string = '\strut\\\\\strut ';
1250: }
1251: }
1252:
1253: }
1254: return $currentstring;
1255: }
1256: #
1257: # End paragraph processing just requires that we output the
1258: # closing string that was saved and blank it.
1259: sub end_p {
1260: # Note only 'tex' mode uses disable_para and enable_para
1261: # so we don't need to know the target in the check below:
1262:
1263: if (!$para_disabled) {
1264: my $current_string = $closing_string;
1265: $closing_string = ''; # Not in a para anymore.
1266: return $current_string;
1267: } else {
1268: return '';
1269: }
1270:
1271: }
1272: }
1273: #-- <br> tag (end tag forbidden)
1274: sub start_br {
1275: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1276: my $currentstring = '';
1277: if ($target eq 'web' || $target eq 'webgrade') {
1278: $currentstring .= $token->[4];
1279: } elsif ($target eq 'tex') {
1280: my @tempo=@$tagstack;
1281: my $signal=0;
1282: # Not going to factor this to is_inside_of since that would require
1283: # multiple stack traversals.
1284: #
1285: for (my $i=$#tempo;$i>=0;$i--) {
1286: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1287: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1288: $signal=1;
1289: }
1290: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1291: $signal = 1;
1292: }
1293: }
1294: if ($signal != 1) {
1295: $currentstring .= '\strut \\\\ \strut ';
1296: }
1297:
1298: }
1299: return $currentstring;
1300: }
1301:
1302: sub end_br {
1303: my ($target,$token) = @_;
1304: my $currentstring = '';
1305: if ($target eq 'web' || $target eq 'webgrade') {
1306: $currentstring .= $token->[2];
1307: }
1308: return $currentstring;
1309: }
1310:
1311: #-- <big> tag (end tag required)
1312: sub start_big {
1313: my ($target,$token) = @_;
1314: my $currentstring = '';
1315: if ($target eq 'web' || $target eq 'webgrade') {
1316: $currentstring .= $token->[4];
1317: } elsif ($target eq 'tex') {
1318: $currentstring .= '{\large ';
1319: }
1320: return $currentstring;
1321: }
1322:
1323: sub end_big {
1324: my ($target,$token) = @_;
1325: my $currentstring = '';
1326: if ($target eq 'web' || $target eq 'webgrade') {
1327: $currentstring .= $token->[2];
1328: } elsif ($target eq 'tex') {
1329: $currentstring .= '}';
1330: }
1331: return $currentstring;
1332: }
1333:
1334: #-- <small> tag (end tag required)
1335: sub start_small {
1336: my ($target,$token) = @_;
1337: my $currentstring = '';
1338: if ($target eq 'web' || $target eq 'webgrade') {
1339: $currentstring .= $token->[4];
1340: } elsif ($target eq 'tex') {
1341: $currentstring .= '{\footnotesize ';
1342: }
1343: return $currentstring;
1344: }
1345:
1346: sub end_small {
1347: my ($target,$token) = @_;
1348: my $currentstring = '';
1349: if ($target eq 'web' || $target eq 'webgrade') {
1350: $currentstring .= $token->[2];
1351: } elsif ($target eq 'tex') {
1352: $currentstring .= '}';
1353: }
1354: return $currentstring;
1355: }
1356:
1357: #-- <basefont> tag (end tag forbidden)
1358: sub start_basefont {
1359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1360: my $currentstring = '';
1361: if ($target eq 'web' || $target eq 'webgrade') {
1362: $currentstring = $token->[4];
1363: } elsif ($target eq 'tex') {
1364: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1365: if (defined $basesize) {
1366: $currentstring = '{\\'.$basesize.' ';
1367: }
1368: }
1369: return $currentstring;
1370: }
1371:
1372: sub end_basefont {
1373: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1374: my $currentstring = '';
1375: if ($target eq 'web' || $target eq 'webgrade') {
1376: $currentstring = $token->[4];
1377: } elsif ($target eq 'tex') {
1378: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1379: if (defined $basesize) {
1380: $currentstring = '}';
1381: }
1382: }
1383: return $currentstring;
1384: }
1385:
1386: #-- <font> tag (end tag required)
1387: sub start_font {
1388: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1389: my $currentstring = '';
1390: if ($target eq 'web' || $target eq 'webgrade') {
1391: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1392: $currentstring = $token->[4];
1393: } elsif ($target eq 'tex') {
1394: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1395: if (defined $fontsize) {
1396: $currentstring = '{\\'.$fontsize.' ';
1397: }
1398: }
1399: return $currentstring;
1400: }
1401:
1402: sub end_font {
1403: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1404: my $currentstring = '';
1405: if ($target eq 'web' || $target eq 'webgrade') {
1406: $currentstring = $token->[2];
1407: } elsif ($target eq 'tex') {
1408: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1409: if (defined $fontsize) {
1410: $currentstring = '}';
1411: }
1412: }
1413: return $currentstring;
1414: }
1415:
1416: #-- <strike> tag (end tag required)
1417: sub start_strike {
1418: my ($target,$token) = @_;
1419: my $currentstring = '';
1420: if ($target eq 'web' || $target eq 'webgrade') {
1421: $currentstring .= $token->[4];
1422: } elsif ($target eq 'tex') {
1423: &Apache::lonxml::startredirection();
1424: }
1425: return $currentstring;
1426: }
1427:
1428: sub end_strike {
1429: my ($target,$token) = @_;
1430: my $currentstring = '';
1431: if ($target eq 'web' || $target eq 'webgrade') {
1432: $currentstring .= $token->[2];
1433: } elsif ($target eq 'tex') {
1434: $currentstring=&Apache::lonxml::endredirection();
1435: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1436: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1437: $currentstring=~s/(\S)\s*$/$1\}/;
1438: }
1439: return $currentstring;
1440: }
1441:
1442: #-- <s> tag (end tag required)
1443: sub start_s {
1444: my ($target,$token) = @_;
1445: my $currentstring = '';
1446: if ($target eq 'web' || $target eq 'webgrade') {
1447: $currentstring .= $token->[4];
1448: } elsif ($target eq 'tex') {
1449: &Apache::lonxml::startredirection();
1450: }
1451: return $currentstring;
1452: }
1453:
1454: sub end_s {
1455: my ($target,$token) = @_;
1456: my $currentstring = '';
1457: if ($target eq 'web' || $target eq 'webgrade') {
1458: $currentstring .= $token->[2];
1459: } elsif ($target eq 'tex') {
1460: $currentstring=&Apache::lonxml::endredirection();
1461: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1462: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1463: $currentstring=~s/(\S)\s*$/$1\}/;
1464: }
1465: return $currentstring;
1466: }
1467:
1468: #-- <sub> tag (end tag required)
1469: sub start_sub {
1470: my ($target,$token) = @_;
1471: my $currentstring = '';
1472: if ($target eq 'web' || $target eq 'webgrade') {
1473: $currentstring .= $token->[4];
1474: } elsif ($target eq 'tex') {
1475: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1476: }
1477: return $currentstring;
1478: }
1479:
1480: sub end_sub {
1481: my ($target,$token) = @_;
1482: my $currentstring = '';
1483: if ($target eq 'web' || $target eq 'webgrade') {
1484: $currentstring .= $token->[2];
1485: } elsif ($target eq 'tex') {
1486: $currentstring .= '}}';
1487: }
1488: return $currentstring;
1489: }
1490:
1491: #-- <sup> tag (end tag required)
1492: sub start_sup {
1493: my ($target,$token) = @_;
1494: my $currentstring = '';
1495: if ($target eq 'web' || $target eq 'webgrade') {
1496: $currentstring .= $token->[4];
1497: } elsif ($target eq 'tex') {
1498: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1499: }
1500: return $currentstring;
1501: }
1502:
1503: sub end_sup {
1504: my ($target,$token) = @_;
1505: my $currentstring = '';
1506: if ($target eq 'web' || $target eq 'webgrade') {
1507: $currentstring .= $token->[2];
1508: } elsif ($target eq 'tex') {
1509: $currentstring .= '}}';
1510: }
1511: return $currentstring;
1512: }
1513:
1514: #-- <hr> tag (end tag forbidden)
1515: sub start_hr {
1516: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1517: my $currentstring = &end_p(); # End enclosing para.
1518: if ($target eq 'web' || $target eq 'webgrade') {
1519: $currentstring .= $token->[4];
1520: } elsif ($target eq 'tex') {
1521:
1522: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1523: #
1524: my $restart_sub = 0;
1525: my $restart_sup = 0;
1526:
1527: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1528: # using the start_ stop_ functions.. those tags only care about
1529: # $target.
1530:
1531: if (&is_inside_of($tagstack, "sub")) {
1532: $restart_sub = 1;
1533: $currentstring .= &end_sub($target, $token, $tagstack,
1534: $parstack, $parser, $safeeval);
1535: }
1536: if (&is_inside_of($tagstack, "sup")) {
1537: $restart_sup = 1;
1538: $currentstring .= &end_sup($target, $token, $tagstack,
1539: $parstack, $parser, $safeeval);
1540: }
1541:
1542: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1543: if (defined $LaTeXwidth) {
1544: if ($LaTeXwidth=~/^%/) {
1545: substr($LaTeXwidth,0,1)='';
1546: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1547: }
1548: } else {
1549: $LaTeXwidth ='0.9\textwidth';
1550: }
1551: my ($pre,$post);
1552: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1553: if (($align eq 'center') || (not defined $align)) {
1554: $pre=''; $post='';
1555: } elsif ($align eq 'left') {
1556: $pre='\rlap{'; $post='} \hfill';
1557: } elsif ($align eq 'right') {
1558: $pre=' \hfill \llap{'; $post='}';
1559: }
1560: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1561: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1562: # Turn stuff back on that we can't be inside of.
1563:
1564: if ($restart_sub) {
1565: $currentstring .= &start_sub($target, $token, $tagstack,
1566: $parstack, $parser, $safeeval);
1567: }
1568: if ($restart_sup) {
1569: $currentstring .= &start_sup($target, $token, $tagstack,
1570: $parstack, $parser, $safeeval);
1571: }
1572: }
1573: return $currentstring;
1574: }
1575:
1576: sub end_hr {
1577: my ($target,$token) = @_;
1578: my $currentstring = '';
1579: if ($target eq 'web' || $target eq 'webgrade') {
1580: $currentstring .= $token->[2];
1581: }
1582: return $currentstring;
1583: }
1584:
1585: #-- <div> tag (end tag required)
1586: {
1587:
1588: # Since div can be nested, the stack below is used
1589: # in 'tex' mode to store the ending strings
1590: # for the div stack.
1591:
1592: my @div_end_stack;
1593:
1594: sub start_div {
1595: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1596: my $currentstring = &end_p(); # Close enclosing para.
1597: if ($target eq 'web' || $target eq 'webgrade') {
1598: $currentstring .= $token->[4];
1599: }
1600: if ($target eq 'tex') {
1601: # 4 possible alignments: left, right, center, and -missing-.
1602: # If inside a table row, we must let the table logic
1603: # do the alignment, however.
1604: #
1605:
1606: my $endstring = '';
1607:
1608: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1609: $safeeval, undef, 1));
1610: if ($align eq 'center') {
1611: $currentstring .= '\begin{center}';
1612: $endstring = '\end{center}';
1613: if (&is_inside_of($tagstack, "table")) {
1614: $currentstring = ¢er_correction().$currentstring;
1615: $endstring .= ¢er_end_correction();
1616: }
1617: }
1618: elsif ($align eq 'right') {
1619: $currentstring .= '\begin{flushright}';
1620: $endstring .= '\end{flushright}';
1621: } elsif ($align eq 'left') {
1622: $currentstring .= '\begin{flushleft}';
1623: $endstring = '\end{flushleft}';
1624: } else {
1625:
1626: }
1627: $currentstring .= "\n"; # For human readability.
1628: $endstring = "\n$endstring\n"; # For human readability
1629: push(@div_end_stack, $endstring);
1630: }
1631: return $currentstring;
1632: }
1633:
1634: sub end_div {
1635: my ($target,$token) = @_;
1636: my $currentstring = '';
1637: if ($target eq 'web' || $target eq 'webgrade') {
1638: $currentstring .= $token->[2];
1639: }
1640: if ($target eq 'tex') {
1641: my $endstring = pop @div_end_stack;
1642: $currentstring .= $endstring;
1643: }
1644: return $currentstring;
1645: }
1646: }
1647:
1648: #-- <a> tag (end tag required)
1649: sub start_a {
1650: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1651: my $currentstring = '';
1652: if ($target eq 'web' || $target eq 'webgrade') {
1653: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1654: undef,1);
1655: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1656: if ($href =~ /\S/) {
1657: if ($href !~ m{^https?://}) {
1658: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1659: my $linkurl;
1660: if ($href =~ m{^/uploaded/}) {
1661: $linkurl = $href;
1662: } elsif ($href =~ m{^[^/]}) {
1663: my $path = $url;
1664: $path =~ s{[^/]*$}{};
1665: $linkurl = $path.$href;
1666: }
1667: if ($linkurl =~ m{^/uploaded/}) {
1668: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1669: if (&Apache::lonnet::is_on_map($url)) {
1670: &Apache::lonxml::extlink($linkurl);
1671: }
1672: }
1673: }
1674: }
1675: }
1676: }
1677: return $currentstring;
1678: }
1679:
1680: sub end_a {
1681: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1682: my $currentstring = '';
1683: if ($target eq 'web' || $target eq 'webgrade') {
1684: $currentstring .= $token->[2];
1685: }
1686: if ($target eq 'tex') {
1687: my $href =
1688: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1689: my $name =
1690: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1691: my $uriprint =
1692: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1693: my $anchorprint =
1694: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1695: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1696: $href =~ s/([^\\])%/$1\\\%/g;
1697: # Substitute special symbols... and allow line breaks at each /
1698: #
1699: $href = &Apache::lonxml::latex_special_symbols($href);
1700: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1701: $currentstring .= ' ({\tt URI:'.$href.'})';
1702: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1703: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1704: } else {
1705: $currentstring.='';
1706: }
1707: }
1708: return $currentstring;
1709: }
1710:
1711: #-- <li> tag (end tag optional)
1712: sub start_li {
1713: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1714: my $currentstring = '';
1715: if ($target eq 'web' || $target eq 'webgrade') {
1716: $currentstring = $token->[4];
1717: } elsif ($target eq 'tex') {
1718: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1719: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1720: #FIXME need to support types i and I
1721: if ($type=~/disc/) {
1722: $currentstring .= ' \item[$\bullet$] ';
1723: } elsif ($type=~/circle/) {
1724: $currentstring .= ' \item[$\circ$] ';
1725: } elsif ($type=~/square/) {
1726: $currentstring .= ' \item[$\diamond$] ';
1727: } elsif ($type eq '1') {
1728: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1729: } elsif ($type eq 'A') {
1730: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1731: } elsif ($type eq 'a') {
1732: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1733: } elsif ($value ne '') {
1734: $currentstring .= ' \item['.$value.'] ';
1735: } else {
1736: $currentstring .= ' \item ';
1737: }
1738: $Apache::londefdef::list_index++;
1739: }
1740: return $currentstring;
1741: }
1742:
1743: sub end_li {
1744: my ($target,$token) = @_;
1745: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1746: if ($target eq 'web' || $target eq 'webgrade') {
1747: $currentstring .= $token->[2];
1748: }
1749: return $currentstring;
1750: }
1751:
1752: #-- <u> tag (end tag required)
1753: sub start_u {
1754: my ($target,$token) = @_;
1755: my $currentstring = '';
1756: if ($target eq 'web' || $target eq 'webgrade') {
1757: $currentstring .= $token->[4];
1758: } elsif ($target eq 'tex') {
1759: &Apache::lonxml::startredirection();
1760: }
1761: return $currentstring;
1762: }
1763:
1764: sub end_u {
1765: my ($target,$token) = @_;
1766: my $currentstring = '';
1767: if ($target eq 'web' || $target eq 'webgrade') {
1768: $currentstring .= $token->[2];
1769: } elsif ($target eq 'tex') {
1770: $currentstring=&Apache::lonxml::endredirection();
1771: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1772: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1773: $currentstring=~s/(\S)\s*$/$1\}/;
1774: }
1775: return $currentstring;
1776: }
1777:
1778: #-- <ul> tag (end tag required)
1779: sub start_ul {
1780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1781: my $currentstring = &end_p(); # Close off enclosing list.
1782: if ($target eq 'web' || $target eq 'webgrade') {
1783: $currentstring .= $token->[4];
1784: } elsif ($target eq 'tex') {
1785: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1786: $Apache::londefdef::list_index=0;
1787: if ($TeXtype eq 'disc') {
1788: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1789: '\renewcommand{\labelitemii}{$\bullet$}'.
1790: '\renewcommand{\labelitemiii}{$\bullet$}'.
1791: '\renewcommand{\labelitemiv}{$\bullet$}';
1792: } elsif ($TeXtype eq 'circle') {
1793: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1794: '\renewcommand{\labelitemii}{$\circ$}'.
1795: '\renewcommand{\labelitemiii}{$\circ$}'.
1796: '\renewcommand{\labelitemiv}{$\circ$}';
1797: } elsif ($TeXtype eq 'square') {
1798: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1799: '\renewcommand{\labelitemii}{$\diamond$}'.
1800: '\renewcommand{\labelitemiii}{$\diamond$}'.
1801: '\renewcommand{\labelitemiv}{$\diamond$}';
1802: }
1803: $currentstring .= '\strut \begin{itemize}';
1804: }
1805: return $currentstring;
1806: }
1807:
1808: sub end_ul {
1809: my ($target,$token) = @_;
1810: my $currentstring = '';
1811: if ($target eq 'web' || $target eq 'webgrade') {
1812: $currentstring = $token->[2];
1813: } elsif ($target eq 'tex') {
1814: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1815: '\renewcommand{\labelitemii}{$\bullet$}'.
1816: '\renewcommand{\labelitemiii}{$\bullet$}'.
1817: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1818: }
1819: return $currentstring;
1820: }
1821:
1822: #-- <menu> tag (end tag required)
1823: sub start_menu {
1824: my ($target,$token) = @_;
1825: my $currentstring = '';
1826: if ($target eq 'web' || $target eq 'webgrade') {
1827: $currentstring = $token->[4];
1828: } elsif ($target eq 'tex') {
1829: $currentstring = " \\begin{itemize} ";
1830: }
1831: return $currentstring;
1832: }
1833:
1834: sub end_menu {
1835: my ($target,$token) = @_;
1836: my $currentstring = '';
1837: if ($target eq 'web' || $target eq 'webgrade') {
1838: $currentstring = $token->[2];
1839: } elsif ($target eq 'tex') {
1840: $currentstring = " \\end{itemize}";
1841: }
1842: return $currentstring;
1843: }
1844:
1845: #-- <dir> tag (end tag required)
1846: sub start_dir {
1847: my ($target,$token) = @_;
1848: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1849: if ($target eq 'web' || $target eq 'webgrade') {
1850: $currentstring .= $token->[4];
1851: } elsif ($target eq 'tex') {
1852: $currentstring .= " \\begin{itemize} ";
1853: }
1854: return $currentstring;
1855: }
1856:
1857: sub end_dir {
1858: my ($target,$token) = @_;
1859: my $currentstring = '';
1860: if ($target eq 'web' || $target eq 'webgrade') {
1861: $currentstring = $token->[2];
1862: } elsif ($target eq 'tex') {
1863: $currentstring = " \\end{itemize}";
1864: }
1865: return $currentstring;
1866: }
1867:
1868: #-- <ol> tag (end tag required)
1869: sub start_ol {
1870: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1871: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1872: if ($target eq 'web' || $target eq 'webgrade') {
1873: $currentstring .= $token->[4];
1874: } elsif ($target eq 'tex') {
1875: $Apache::londefdef::list_index=0;
1876: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1877: if ($type eq '1') {
1878: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1879: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1880: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1881: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1882: } elsif ($type eq 'A') {
1883: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1884: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1885: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1886: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1887: } elsif ($type eq 'a') {
1888: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1889: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1890: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1891: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1892: } elsif ($type eq 'i') {
1893: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1894: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1895: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1896: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1897: } elsif ($type eq 'I') {
1898: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1899: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1900: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1901: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1902: }
1903: $currentstring .= '\strut \begin{enumerate}';
1904: }
1905: return $currentstring;
1906: }
1907:
1908: sub end_ol {
1909: my ($target,$token) = @_;
1910: my $currentstring = '';
1911: if ($target eq 'web' || $target eq 'webgrade') {
1912: $currentstring = $token->[2];
1913: } elsif ($target eq 'tex') {
1914: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1915: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1916: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1917: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1918: }
1919: return $currentstring;
1920: }
1921:
1922: #-- <dl> tag (end tag required)
1923: sub start_dl {
1924: my ($target,$token) = @_;
1925: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1926: if ($target eq 'web' || $target eq 'webgrade') {
1927: $currentstring .= $token->[4];
1928: } elsif ($target eq 'tex') {
1929: $currentstring .= '\begin{description}';
1930: $Apache::londefdef::DL++;
1931: push(@Apache::londefdef::description,[]);
1932: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1933: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1934: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1935: }
1936: return $currentstring;
1937: }
1938:
1939: sub end_dl {
1940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1941: my $currentstring = '';
1942: if ($target eq 'web' || $target eq 'webgrade') {
1943: $currentstring = $token->[2];
1944: } elsif ($target eq 'tex') {
1945: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1946: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1947: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1948: $currentstring.=' '.$element.' ';
1949: }
1950: pop(@Apache::londefdef::description);
1951: $currentstring.='\end{description}';
1952: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1953: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1954: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1955: $Apache::londefdef::DL--;
1956: }
1957: return $currentstring;
1958: }
1959:
1960: #-- <dt> tag (end tag optional)
1961: sub start_dt {
1962: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1963: my $currentstring='';
1964: if ($target eq 'web' || $target eq 'webgrade') {
1965: $currentstring = $token->[4];
1966: } elsif ($target eq 'tex') {
1967: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1968: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1969: &Apache::lonxml::startredirection();
1970: $Apache::londefdef::DT[-1]++;
1971: $Apache::londefdef::seenDT[-1]=1;
1972: }
1973: return $currentstring;
1974: }
1975:
1976: sub end_dt {
1977: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1978: my $currentstring = '';
1979: if ($target eq 'web' || $target eq 'webgrade') {
1980: $currentstring = $token->[2];
1981: } elsif ($target eq 'tex') {
1982: if ($Apache::londefdef::DT[-1]) {
1983: my $data=&item_cleanup();
1984: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1985: $Apache::londefdef::DT[-1]--;
1986: }
1987: }
1988: return $currentstring;
1989: }
1990:
1991: sub item_cleanup {
1992: my $item=&Apache::lonxml::endredirection();
1993: $item=~s/\\begin{center}//g;
1994: $item=~s/\\end{center}//g;
1995: return $item;
1996: }
1997:
1998: #-- <dd> tag (end tag optional)
1999: sub start_dd {
2000: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2001: my $currentstring = '';
2002: if ($target eq 'web' || $target eq 'webgrade') {
2003: $currentstring = $token->[4];
2004: } elsif ($target eq 'tex') {
2005: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2006: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2007: if (!$Apache::londefdef::seenDT[-1]) {
2008: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2009: }
2010: push(@{$Apache::londefdef::description[-1]},'');
2011: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2012: $Apache::londefdef::DD[-1]++;
2013: &Apache::lonxml::startredirection();
2014: }
2015: return $currentstring;
2016: }
2017:
2018: sub end_dd {
2019: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2020: my $currentstring = '';
2021: if ($target eq 'web' || $target eq 'webgrade') {
2022: $currentstring = $token->[2];
2023: } elsif ($target eq 'tex') {
2024: $Apache::londefdef::description[-1]->[-1].=
2025: &Apache::lonxml::endredirection().' \vskip 0mm ';
2026: $Apache::londefdef::DD[-1]--;
2027: }
2028: return $currentstring;
2029: }
2030:
2031: #-- <table> tag (end tag required)
2032: # <table> also ends any prior <p> that is not closed.
2033: # but, unless I allow <p>'s to nest, that's the
2034: # only way I could think of to allow <p> in
2035: # <tr> <th> bodies
2036: #
2037: #list of supported attributes: border,width,TeXwidth,TeXtheme
2038: # align
2039: sub start_table {
2040: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2041: my $textwidth = '';
2042: my $currentstring = &end_p();
2043: if ($target eq 'web' || $target eq 'webgrade') {
2044: $currentstring .= $token->[4];
2045: } elsif ($target eq 'tex') {
2046: &disable_para(); # Can't have paras in a table.
2047:
2048:
2049: # New table code:
2050:
2051: # Get the parameters that we can do something about:
2052:
2053: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2054: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2055: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2056: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2057: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2058:
2059: # The only thing that needs any figuring out is the width.. and then only if it is
2060: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2061: #
2062:
2063: my $table = new Apache::lontable();
2064: if ((defined $border) && ($border > 0)) {
2065: # &Apache::lonnet::logthis("Turning on table borders: $border");
2066: $table->table_border(1);
2067: if ($cell_border ne 'none') {
2068: $table->cell_border(1); # html specs that border turns on both...unless rules='none'.
2069: }
2070: }
2071: # Only all or nothing for cell borders for now:
2072:
2073: if ((defined $cell_border) && ($cell_border ne 'none')) {
2074: # &Apache::lonnet::logthis("Turning on cell borders: $cell_border");
2075: $table->cell_border(1);
2076: }
2077: if (defined $theme) {
2078: $table->theme($theme);
2079: }
2080: if (defined $align) {
2081: $table->alignment($align);
2082: }
2083:
2084: # Missing width is most of page width
2085:
2086: if (!(defined $width)) {
2087: $width = '70%';
2088: }
2089:
2090: # If a percentage, need to calculate what this means in terms of
2091: # page width:
2092:
2093: if ($width =~ /%$/) {
2094: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2095: $width =~ s/%//;
2096: $width = $width * $textwidth / 100.0;
2097: $width .= " mm";
2098: $table->width($width);
2099: }
2100:
2101: push(@Apache::londefdef::table, $table);
2102: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2103:
2104: #--------------------------------------------------------
2105: # Old table code here.
2106: #--------------------------------------------------------
2107:
2108:
2109: if (0) {
2110: push(@Apache::londefdef::table, {});
2111: $Apache::londefdef::table[-1]{'row_number'} = -1;
2112: #maximum table's width (default coincides with text line length)
2113: if ($#Apache::londefdef::table==0) {
2114: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2115: $textwidth=~/(\d+\.?\d*)/;
2116: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2117: } else {
2118: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2119: #the maximum width of nested table is determined by LATeX width of parent cell
2120: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2121: } else {
2122: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2123: $textwidth=$Apache::londefdef::table[-2]{'width'};
2124: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2125: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2126: }
2127: }
2128: }
2129:
2130: # width either comes forced from the TeXwidth or the width parameters.
2131: # in either case it can be a percentage or absolute width.
2132: # in the width case we ignore absolute width
2133: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2134: if (!defined($TeXwidth)) {
2135: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2136: $safeeval,undef,1);
2137: if ($htmlwidth =~ /%/) {
2138: $TeXwidth = $htmlwidth;
2139: } else {
2140: $TeXwidth = $textwidth;
2141: }
2142: }
2143: # if the width is specified as a % it is converted to an absolute width.
2144: # otherwise.. just plugged right in the hash
2145:
2146: if ($TeXwidth=~/%/) {
2147: $TeXwidth=~/(\d+)/;
2148: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2149: } else {
2150: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2151: }
2152: # In the end, however the table width cannot be wider than $textwidth...
2153:
2154: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2155: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2156: }
2157: #table's border
2158: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2159: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2160: unless (defined $border) { $border = 0; }
2161: if ($border) {
2162: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2163: $Apache::londefdef::table[-1]{'vinc'} = '&';
2164: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2165: } else {
2166: $Apache::londefdef::table[-1]{'hinc'} = '';
2167: $Apache::londefdef::table[-1]{'vinc'} = '&';
2168: $Apache::londefdef::table[-1]{'vvinc'} = '';
2169: }
2170: if ($#Apache::londefdef::table==0) {
2171: # Note that \newline seems to destroy the alignment envs.
2172: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2173: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2174: }
2175: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2176: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2177: $Apache::londefdef::table[-1]{'objectlen'}=[];
2178: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2179: $Apache::londefdef::table[-1]{'maxlen'}=[];
2180: $Apache::londefdef::table[-1]{'minlen'}=[];
2181: $Apache::londefdef::table[-1]{'content'}=[];
2182: $Apache::londefdef::table[-1]{'align'}=[];
2183: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2184: }
2185:
2186: }
2187: return $currentstring;
2188: }
2189:
2190: sub end_table {
2191: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2192: my $currentstring = '';
2193: if ($target eq 'web' || $target eq 'webgrade') {
2194: $currentstring = $token->[2];
2195: } elsif ($target eq 'tex') {
2196:
2197:
2198: # New table code:
2199:
2200: my $table = pop(@Apache::londefdef::table);
2201: my $t = $table->generate();
2202: $currentstring = $t->generate_string();
2203: &enable_para();
2204: #--------------------------------------------------------------
2205: # Old table code:
2206: #--------------------------------------------------------------
2207:
2208: if (0) {
2209:
2210: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2211: my $inmemory = '';
2212: my $output = '';
2213: my $WARNING='';
2214: #width of columns from TeXwidth attributes
2215:
2216: # Protect against unbalanced </table> tag.
2217:
2218: if (scalar(@Apache::londefdef::table) > 0) {
2219:
2220: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2221: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2222: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2223: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2224: }
2225: }
2226: }
2227: #free space and number of empty columns
2228: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2229: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2230: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2231: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2232: $empty_columns++;
2233: } else {
2234: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2235: }
2236: }
2237:
2238: #boundaries for contents columns
2239: my @min_len=();#columns can not be narrower
2240: my @max_len=();#maximum length of column
2241: my $avg_max;
2242: my $avg_min;
2243: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2244: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2245: my ($localmin,$localmax)=(0,0);
2246: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2247: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2248: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2249: }
2250: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2251: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2252: }
2253: }
2254: push @min_len, $localmin;
2255: push @max_len, $localmax;
2256: $avg_max = $localmax + $avg_max;
2257: $avg_min = $localmin + $avg_min;
2258: }
2259: # Does not really matter what the average max/min are if there are no cols.
2260: # and this prevents div 0 in that case.
2261:
2262: if ($counter_cols != 0) {
2263: $avg_max = $avg_max/$counter_cols;
2264: $avg_min = $avg_min/$counter_cols;
2265: }
2266:
2267:
2268: # I don't think the below is needed.. but just in case:
2269:
2270: if ($avg_min > $avg_max) {
2271: my $temp = $avg_min;
2272: $avg_min = $avg_max;
2273: $avg_max = $temp;
2274: }
2275:
2276:
2277: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2278: my $localmin=0,;
2279: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2280: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2281: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2282: }
2283: }
2284: if ($max_len[$jn]<$localmin) {
2285: $max_len[$jn]=$localmin;
2286: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2287: }#object size is bigger
2288: if ($min_len[$jn]<$localmin) {
2289: $min_len[$jn]=$localmin;
2290: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2291: }#object size is bigger
2292: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2293: $min_len[$jn]=0;
2294: $max_len[$jn]=0;
2295: }
2296: # Spans seem to be really bothered by max/min = 0. So if we have one
2297: # make it an average joe max/min.
2298:
2299: if ($max_len[$jn] == 0) {
2300: $max_len[$jn] = $avg_max;
2301: }
2302: if ($min_len[$jn] == 0) {
2303: $min_len[$jn] = $avg_min;
2304: }
2305:
2306: }
2307: #final adjustment of column width
2308: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2309: my @adjust=();
2310: #step 1. adjustment by maximum value
2311: my $space_needed=0;
2312: for (my $jn=0;$jn<=$#max_len;$jn++) {
2313: $space_needed=$space_needed+$max_len[$jn];
2314: }
2315: if ($space_needed<=$available_space) {
2316:
2317: for (my $jn=0;$jn<=$#max_len;$jn++) {
2318: if ($fwidth[$jn]==0) {
2319: $fwidth[$jn]=$max_len[$jn];
2320: }
2321: }
2322: } else {
2323: #step 2. adjustment by minimum value (estimation)
2324: $space_needed=0;
2325: for (my $jn=0;$jn<=$#min_len;$jn++) {
2326: $space_needed+=$min_len[$jn];
2327: }
2328: if ($space_needed>$available_space) {
2329: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2330: for (my $jn=0;$jn<=$#max_len;$jn++) {
2331: if ($fwidth[$jn]==0) {
2332: $fwidth[$jn]=$min_len[$jn];
2333: }
2334: }
2335: #check if we have objects which can be scaled
2336: my $how_many_to_scale=0;
2337: my @to_scale=();
2338: for (my $jn=0;$jn<=$#max_len;$jn++) {
2339: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2340: $how_many_to_scale++;
2341: push @to_scale, $jn;
2342: }
2343: }
2344: if ($how_many_to_scale>0) {
2345: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2346: foreach my $jn (@to_scale) {
2347: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2348: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2349: if ($1 ne '') {
2350: my $current_length=&recalc($1);
2351: $current_length=~/(\d+\.?\d*)/;
2352: $current_length=$current_length-$space_to_adjust;
2353: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2354: }
2355: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2356: if ($1 ne '') {
2357: my $current_length=$1;
2358: $current_length=$current_length-$space_to_adjust;
2359: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2360: }
2361: }
2362: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2363: }
2364: }
2365: } else {
2366: #step 3. adjustment over minimal + corrections
2367: my $enlarge_coef=$available_space/$space_needed;
2368: my $acsessive=0;
2369: for (my $jn=0;$jn<=$#min_len;$jn++) {
2370: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2371: if ($adjust[$jn]>$max_len[$jn]) {
2372: $fwidth[$jn]=$max_len[$jn];
2373: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2374: $adjust[$jn]=0;
2375:
2376: }
2377: }
2378: if ($acsessive>0) {
2379: #we have an excess of space and can redistribute it
2380: my $notempty_columns=0;
2381: for (my $jn=0;$jn<=$#min_len;$jn++) {
2382: if ($adjust[$jn]!=0) {
2383: $notempty_columns++;
2384: }
2385: }
2386: my $per_column=$acsessive/$notempty_columns;
2387: for (my $jn=0;$jn<=$#min_len;$jn++) {
2388: if ($adjust[$jn]!=0) {
2389: $adjust[$jn]+=$per_column;
2390: $fwidth[$jn]=$adjust[$jn];
2391: }
2392: }
2393: } else {
2394: for (my $jn=0;$jn<=$#min_len;$jn++) {
2395: $fwidth[$jn]=$adjust[$jn];
2396: }
2397: }
2398: }
2399: }
2400: # use all available width or specified width as if not specified,
2401: # the specified width gets defaulted to the available width.
2402:
2403: my $current=0;
2404: for (my $i=0;$i<=$#fwidth;$i++) {
2405: $current+=$fwidth[$i];
2406: }
2407: if ($current == 0) {
2408: $current = $Apache::londefdef::table[-1]{'width'};
2409: }
2410: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2411: for (my $i=0;$i<=$#fwidth;$i++) {
2412: $fwidth[$i]*=$coef;
2413: }
2414: #removing of empty columns if allowed
2415: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2416: if ($permission eq 'yes') {
2417: my @cleaned_table=();
2418: my @cleaned_header=();
2419: my $colind=0;
2420: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2421: if ($fwidth[$jn]!=0) {
2422: #we need to copy column
2423: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2424: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2425: $cleaned_header[$colind]=$fwidth[$jn];
2426: }
2427: $colind++;
2428: }
2429: }
2430: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2431: @fwidth=@cleaned_header;
2432: }
2433:
2434:
2435: #construct header of the table
2436: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2437: for (my $in=0;$in<=$#fwidth;$in++) {
2438: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2439: }
2440: $header_of_table .= '}';
2441:
2442: #fill the table
2443: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2444: my $have_rowspan = 0;
2445: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2446:
2447: #-----------------------------------------------------------
2448: # I think this order of doing things will ensure that
2449: # single rowspan, columspan and combined row/colspans will
2450: # work correctly. LaTeX is delicate here.
2451: # RF.
2452:
2453: # Start a rowspan if necessary:
2454:
2455: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2456: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2457: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2458: #
2459: # Do the appropriate magic if this has a colspan
2460: #
2461:
2462: my $border_char = "";
2463: if ($border) {
2464: $border_char = "|";
2465: }
2466: my $spanwidth = 0;
2467: if ($colspan > 1) {
2468: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2469: $spanwidth += $fwidth[$spancol];
2470: }
2471: $output .= '\multicolumn{'.
2472: $colspan
2473: ."}";
2474: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2475: $output .= '{'.$border_char.'c'.$border_char.'}{';
2476: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2477: $output .= '{'.$border_char.'r'.$border_char.'}{';
2478: }
2479: else {
2480: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2481: }
2482:
2483: } else {
2484: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2485: }
2486:
2487: # Rowspan... if colspan is 1, and there's an alignment we'll need
2488: # to kick in a multicolumn in order to get the alignment spec.
2489: # this must precede the multirow or LaTex gets quite upset.
2490: # Naturally if colspan > 1 we've already done that above ^
2491: #
2492: my $multirow_aligned = 0;
2493: if ($rowspan > 1) {
2494: if ($colspan == 1) {
2495: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2496: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2497: $multirow_aligned = 1;
2498: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2499: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2500: $multirow_aligned = 1;
2501: }
2502: }
2503: $have_rowspan++;
2504: if ($multirow_aligned) {
2505: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2506: } else {
2507: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2508: }
2509:
2510: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2511: s{^\s*\\par\s*}{};
2512: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2513: s{\s*\\vskip\s*0pt\s*$}{};
2514:
2515: #
2516: # If we did not throw in a multicolumn to align, then add
2517: # an extra {
2518: # so we close correctly without having to keep additional state
2519: # around
2520: #
2521: if (!$multirow_aligned) {
2522: $output .= '{';
2523: }
2524: }
2525: if (($rowspan eq '^') || ($rowspan eq '_')) {
2526: $have_rowspan++;
2527: }
2528: #--------------------------------------------------------------
2529:
2530:
2531: # For right and center alignment of single cells.
2532: # we are going to use a multicolumn with a span of 1 to specify alignment.
2533: #
2534: if ($colspan == 1 && $rowspan == 1) {
2535: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2536: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2537: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2538: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2539: }
2540: }
2541:
2542: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2543:
2544: if (($colspan == 1 && $rowspan == 1) &&
2545: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2546: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2547: $output .= '}';
2548: }
2549:
2550: # Close off any open multirow:
2551:
2552: if ($rowspan > 1) {
2553: $output .= '}}';
2554: }
2555: # Close off the colspan...
2556: #
2557: if ($colspan > 1) {
2558: $output .= '}';
2559: $jn += $colspan-1; # Adjust for number of rows really left.
2560: }
2561: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2562: }
2563: # If have_rowspan > 0, and borders are on, then
2564: # we need to do more than put an \hline at the bottom of row.
2565: # we need to do the appropriate \cline to ensure that
2566: # the spanned rows don't have \hlines through them.
2567:
2568: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2569: $output .= ' \\\\ ';
2570: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2571: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2572: if ($rowspan ne "^") {
2573: if (($rowspan <= 1) || ($rowspan eq '_')) {
2574: my $column = $jn+1;
2575: $output .= '\cline{'.$column.'-'.$column.'} ';
2576: }
2577: }
2578: }
2579:
2580: } else {
2581: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2582: }
2583: }
2584: # Note that \newline destroys alignment env's produced by e.g. <div>
2585: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2586: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2587: if ($#Apache::londefdef::table > 0) {
2588: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2589: # Figure out max/and min width by summing us and then
2590: # apply that to the current column of the table we nest in
2591: # if it's larger than the current width or the current width
2592: # is undefined.
2593: #
2594: my $min_nested_width = 0;
2595: my $max_nested_width = 0;
2596: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2597: $min_nested_width += $min_len[$col];
2598: $max_nested_width += $max_len[$col];
2599:
2600: }
2601: # Fudge in an extra 5 mm for borders etc:
2602:
2603: $min_nested_width += 5;
2604: $max_nested_width += 5;
2605:
2606: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2607: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2608: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2609: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2610: }
2611: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2612: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2613: }
2614:
2615: pop @Apache::londefdef::table;
2616: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2617: } else {
2618: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2619: pop @Apache::londefdef::table;
2620: undef @Apache::londefdef::table;
2621: }
2622: }
2623: &enable_para();
2624: }
2625: }
2626: return $currentstring;
2627: }
2628:
2629: #-- <tr> tag (end tag optional)
2630: sub start_tr {
2631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2632: my $currentstring = '';
2633: if ($target eq 'web' || $target eq 'webgrade') {
2634: $currentstring = $token->[4];
2635: } elsif ($target eq 'tex') {
2636:
2637: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2638: $Apache::londefdef::table[-1]->start_row();
2639:
2640: if ($align ne '') {
2641: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2642: }
2643:
2644: #---------------------------------------------------------------
2645: # Old table code.
2646: #---------------------------------------------------------------
2647:
2648: if (0) {
2649: $Apache::londefdef::table[-1]{'row_number'}++;
2650: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2651: if ($alignchar ne '') {
2652: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2653: } else {
2654: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2655: }
2656: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2657: #
2658: # Need to save the number of table columns to preserve the max # columns.
2659: #
2660: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2661: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2662: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2663: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2664: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2665: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2666: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2667: }
2668: }
2669: return $currentstring;
2670: }
2671:
2672: sub end_tr {
2673: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2674: my $currentstring = &end_p(); # Close any pending <p> in the row.
2675: if ($target eq 'web' || $target eq 'webgrade') {
2676: $currentstring .= $token->[2];
2677: } elsif ($target eq 'tex') {
2678:
2679: # In case the user is missing a </td> or </th> tag:
2680:
2681: if ($Apache::londefdef::TD_redirection) {
2682: &end_td_tex($parstack,$parser,$safeeval);
2683: }
2684: $Apache::londefdef::table[-1]->end_row();
2685:
2686: #-----------------------------------------------
2687: # Old table code
2688: #-----------------------------------------------
2689:
2690: if (0) {
2691: if ($Apache::londefdef::TD_redirection) {
2692: &end_td_tex($parstack,$parser,$safeeval);
2693: }
2694: # Counter columns must be the maximum number of columns seen
2695: # in the table so far so:
2696: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2697: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2698: }
2699: }
2700:
2701:
2702: }
2703: return $currentstring;
2704: }
2705:
2706: #-- <td> tag (end tag optional)
2707: sub start_td {
2708: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2709: my $currentstring = '';
2710: if ($target eq 'web' || $target eq 'webgrade') {
2711: $currentstring = $token->[4];
2712: } elsif ($target eq 'tex') {
2713: $Apache::londefdef::TD_redirection = 1;
2714: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2715: }
2716: return $currentstring;
2717: }
2718:
2719: sub tag_check {
2720: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2721: my @ar=@$parstack;
2722: for (my $i=$#ar-1;$i>=0;$i--) {
2723: if (lc($$tagstack[$i]) eq $good_tag) {
2724: &start_td_tex($parstack,$parser,$safeeval);
2725: last;
2726: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2727: splice @ar, $i+1;
2728: &end_td_tex(\@ar,$parser,$safeeval);
2729: &start_td_tex($parstack,$parser,$safeeval);
2730: last;
2731: }
2732: }
2733: return '';
2734: }
2735:
2736: #
2737: # Factor out cell configuration hash generation:
2738: #
2739:
2740: sub cell_config_hash {
2741: my ($align, $rowspan, $colspan, $width) = @_;
2742: if ($rowspan ne '') {
2743: $rowspan =~ s/^\s+|\s+$//g;
2744: }
2745: if ($colspan ne '') {
2746: $colspan =~ s/^\s+|\s+$//g;
2747: }
2748: my %config;
2749: if ($align ne '') {
2750: $config{'halign'} = $align;
2751: }
2752: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2753: $config{'colspan'} = $colspan;
2754: }
2755: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2756: $config{'rowspan'} = $rowspan;
2757: }
2758: if ($width ne '') {
2759: $config{'width'} = $width;
2760: }
2761: return \%config;
2762: }
2763:
2764: sub start_td_tex {
2765: my ($parstack,$parser,$safeeval) = @_;
2766:
2767: # At this stage, an empty cell is created with the
2768: # appropriate rowspan/colspan and alignment
2769: # attributes, but empty of text. end_td_tex will
2770: # fetch the contents from the recursive parse and
2771: # fill the cell with them:
2772: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2773: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2774: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2775: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2776: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2777:
2778: my $table = $Apache::londefdef::table[-1];
2779: $table->add_cell('', $config);
2780:
2781:
2782: #------------------------------------------------
2783: # Old table code.
2784: #------------------------------------------------
2785:
2786: if (0) {
2787:
2788: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2789: if ($alignchar eq '') {
2790: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2791: }
2792: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2793: $Apache::londefdef::table[-1]{'counter_columns'}++;
2794: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2795: if (defined $TeXwidth) {
2796: my $current_length=&recalc($TeXwidth);
2797: $current_length=~/(\d+\.?\d*)/;
2798: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2799: }
2800: }
2801: &Apache::lonxml::startredirection();
2802: return '';
2803: }
2804:
2805: sub end_td_tex {
2806:
2807: my $text = &Apache::lonxml::endredirection();
2808: my $table = $Apache::londefdef::table[-1];
2809: $table->append_cell_text($text);
2810:
2811: #-------------------------------------------------
2812: # Old table code
2813: #-------------------------------------------------
2814:
2815: if (0) {
2816: my ($parstack,$parser,$safeeval) = @_;
2817: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2818: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2819: my $data = &Apache::lonxml::endredirection();
2820:
2821: # The rowspan array of the table indicates which cells are part of a span.
2822: # n indicates the start of a span set of n rows.
2823: # ^ indicates a cell that continues a span set.
2824: # _ indicates the cell is at the bottom of a span set.
2825: # If this and subsequent cells are part of a rowspan, we must
2826: # push along the row until we find one that is not.
2827:
2828: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2829: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2830: # Part of a span.
2831: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2832: $current_column++;
2833: }
2834: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2835:
2836:
2837: # Get the column and row spans.
2838: # Colspan can be done via \multicolumn if I can figure out the data structs.
2839:
2840: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2841: if (!$colspan) {
2842: $colspan = 1;
2843: }
2844:
2845: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2846: if (!$rowspan) {
2847: $rowspan = 1;
2848: }
2849:
2850:
2851:
2852: for (my $c = 0; $c < $colspan; $c++) {
2853: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2854: for (my $i = 1; $i < $rowspan; $i++) {
2855: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2856: if ($i == ($rowspan-1)) {
2857: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2858: }
2859: }
2860: }
2861:
2862: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2863: if (defined $TeXwidth) {
2864: for (my $c = 0; $c < $colspan; $c++) {
2865: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2866: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2867: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2868: }
2869: } else {
2870: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2871: my $garbage_data=$data;
2872: my $fwidth=0;
2873: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2874: my $current_length=&recalc($1);
2875: $current_length=~/(\d+\.?\d*)/;
2876: if ($fwidth<$1) {$fwidth=$1;}
2877: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2878: }
2879: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2880: my $current_length=$1;
2881: if ($fwidth<$current_length) {$fwidth=$current_length;}
2882: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2883: }
2884: for (my $c = 0; $c < $colspan; $c++) {
2885: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2886: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2887: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2888: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2889: }
2890: } 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)*/) {
2891: my $garbage_data=$data;
2892: my $fwidth=0;
2893: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2894: my $current_length=&recalc($1);
2895: $current_length=~/(\d+\.?\d*)/;
2896: if ($fwidth<$1) {$fwidth=$1;}
2897: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2898: }
2899: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2900: my $current_length=&recalc($1);
2901: $current_length=~/(\d+\.?\d*)/;
2902: if ($fwidth<$1) {$fwidth=$1;}
2903: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2904: }
2905: for (my $c = 0; $c < $colspan; $c++) {
2906: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2907: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2908: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2909: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2910: }
2911: $data=~s/\\\\\s*$//;
2912: } else {
2913: $data=~s/^\s+(\S.*)/$1/;
2914: $data=~s/(.*\S)\s+$/$1/;
2915: $data=~s/(\s)+/$1/;
2916: my ($current_length,$min_length)=(0,0);
2917: if ($data=~/\\vskip/) {
2918: my $newdata=$data;
2919: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2920: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2921: foreach my $elementdata (@newdata) {
2922: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2923: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2924: my @words=split(/ /,$elementdata);
2925: foreach my $word (@words) {
2926: my $lengthword=2.5*&LATEX_length($word);
2927: if ($min_length<$lengthword) {$min_length=$lengthword;}
2928: }
2929: }
2930: } else {
2931: $current_length=2.5*&LATEX_length($data);
2932: my @words=split(/ /,$data);
2933: foreach my $word (@words) {
2934: my $lengthword=2*&LATEX_length($word);
2935: if ($min_length<$lengthword) {$min_length=$lengthword;}
2936: }
2937: }
2938: for (my $c = 0; $c < $colspan; $c++) {
2939: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2940: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2941: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2942: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2943: }
2944: }
2945: }
2946: # Substitute all of the tables nested in this cell in their appropriate places.
2947:
2948:
2949: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2950: for (my $in=0; $in<=$nested_count; $in++) {
2951: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2952: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2953: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2954: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2955:
2956: }
2957: # Should be be killing off the 'include' elements as they're used up?
2958:
2959: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2960:
2961:
2962:
2963:
2964: # the colspan array will indicate how many columns will be spanned by this
2965: # cell..this requires that counter_columns also be adjusted accordingly
2966: # so that the next bunch of text goes in the right cell. Note that since
2967: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2968: #
2969:
2970: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2971: for (my $i = 0; $i < ($colspan -1); $i++) {
2972: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2973: }
2974: for (my $r = 0; $r < $rowspan; $r++) {
2975: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2976: # Put empty text in spanned cols.
2977:
2978: }
2979:
2980: }
2981:
2982: return '';
2983: }
2984:
2985: sub end_td {
2986: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2987: my $currentstring = '';
2988: if ($target eq 'web' || $target eq 'webgrade') {
2989: $currentstring = $token->[2];
2990: } elsif ($target eq 'tex') {
2991: $Apache::londefdef::TD_redirection =0;
2992: &end_td_tex($parstack,$parser,$safeeval);
2993: }
2994: return $currentstring;
2995: }
2996:
2997: #-- <th> tag (end tag optional)
2998: sub start_th {
2999: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3000: my $currentstring = '';
3001: if ($target eq 'web' || $target eq 'webgrade') {
3002: $currentstring = $token->[4];
3003: } elsif ($target eq 'tex') {
3004: $Apache::londefdef::TD_redirection = 1;
3005: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
3006: }
3007: return $currentstring;
3008: }
3009:
3010: sub tagg_check {
3011: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
3012: my @ar=@$parstack;
3013: for (my $i=$#ar-1;$i>=0;$i--) {
3014: if (lc($$tagstack[$i]) eq $good_tag) {
3015: &start_th_tex($parstack,$parser,$safeeval);
3016: last;
3017: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
3018: splice @ar, $i+1;
3019: &end_th_tex(\@ar,$parser,$safeeval);
3020: &start_th_tex($parstack,$parser,$safeeval);
3021: last;
3022: }
3023: }
3024: return '';
3025: }
3026:
3027: sub start_th_tex {
3028: my ($parstack,$parser,$safeeval) = @_;
3029:
3030: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
3031: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
3032: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
3033:
3034: my $config = cell_config_hash($alignment, $rowspan, $colspan);
3035: my $table = $Apache::londefdef::table[-1];
3036: $table->add_cell('\textbf{', $config);
3037:
3038: #-------------------------------------------------------------------------------------
3039: #
3040: # Old table code.
3041: #
3042: #--------------------------------------------------------------------------------------
3043:
3044: if (0) {
3045:
3046:
3047: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
3048: if ($alignchar eq '') {
3049: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
3050: }
3051: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
3052: $Apache::londefdef::table[-1]{'counter_columns'}++;
3053: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3054: if (defined $TeXwidth) {
3055: my $current_length=&recalc($TeXwidth);
3056: $current_length=~/(\d+\.?\d*)/;
3057: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
3058: }
3059: }
3060:
3061: # Accept xml until the </th> tag.
3062:
3063: &Apache::lonxml::startredirection();
3064: return '';
3065: }
3066:
3067: sub end_th_tex {
3068: my ($parstack,$parser,$safeeval) = @_;
3069:
3070: my $table = $Apache::londefdef::table[-1];
3071: my $text = &Apache::lonxml::endredirection();
3072: $table->append_cell_text($text.'}');
3073:
3074: #-----------------------------------------------------------------------------
3075: # Old table code:
3076: #-----------------------------------------------------------------------------
3077:
3078: if (0) {
3079: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3080: my $data=&Apache::lonxml::endredirection();
3081: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3082: if (defined $TeXwidth) {
3083: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3084: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3085: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3086: } else {
3087: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3088: my $garbage_data=$data;
3089: my $fwidth=0;
3090: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3091: my $current_length=&recalc($1);
3092: $current_length=~/(\d+\.?\d*)/;
3093: if ($fwidth<$1) {$fwidth=$1;}
3094: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3095: }
3096: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3097: my $current_length=$1;
3098: if ($fwidth<$current_length) {$fwidth=$current_length;}
3099: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3100: }
3101: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3102: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3103: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3104: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3105: } else {
3106: $data=~s/^\s+(\S.*)/$1/;
3107: $data=~s/(.*\S)\s+$/$1/;
3108: $data=~s/(\s)+/$1/;
3109: my ($current_length,$min_length)=(0,0);
3110: if ($data=~/\\vskip/) {
3111: my $newdata=$data;
3112: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3113: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3114: foreach my $elementdata (@newdata) {
3115: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3116: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3117: my @words=split(/ /,$elementdata);
3118: foreach my $word (@words) {
3119: my $lengthword=2.5*&LATEX_length($word);
3120: if ($min_length<$lengthword) {$min_length=$lengthword;}
3121: }
3122: }
3123: } else {
3124: $current_length=2.5*&LATEX_length($data);
3125: my @words=split(/ /,$data);
3126: foreach my $word (@words) {
3127: my $lengthword=2*&LATEX_length($word);
3128: if ($min_length<$lengthword) {$min_length=$lengthword;}
3129: }
3130: }
3131: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3132: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3133: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3134: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3135: }
3136: }
3137: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3138: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3139: }
3140: #make data bold
3141: $data='\textbf{'.$data.'}';
3142: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3143: }
3144: return'';
3145: }
3146:
3147: sub end_th {
3148: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3149: my $currentstring = &end_p(); # Close any open <p> in the row.
3150: if ($target eq 'web' || $target eq 'webgrade') {
3151: $currentstring .= $token->[2];
3152: } elsif ($target eq 'tex') {
3153: $Apache::londefdef::TD_redirection =0;
3154: &end_th_tex($parstack,$parser,$safeeval);
3155: }
3156: return $currentstring;
3157: }
3158:
3159: #-- <img> tag (end tag forbidden)
3160: #
3161: # Render the <IMG> tag.
3162: # <IMG> has the following attributes (in addition to the
3163: # standard HTML ones:
3164: # TeXwrap - Governs how the tex target will try to wrap text around
3165: # horizontally aligned images.
3166: # TeXwidth - The width of the image when rendered for print (mm).
3167: # TeXheight - The height of the image when rendered for print (mm)
3168: # (Note there seems to also be support for this as a % of page size)
3169: #
3170: sub start_img {
3171: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3172: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3173: undef,1);
3174: if (! $src &&
3175: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3176: ) {
3177: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3178: return '';
3179: }
3180: &Apache::lonxml::extlink($src);
3181: my $currentstring = '';
3182: my $scaling = .3;
3183:
3184: # Render unto browsers that which are the browser's...
3185:
3186: if ($target eq 'web' || $target eq 'webgrade') {
3187: if ($env{'browser.imagesuppress'} ne 'on') {
3188: my $enc = ('yes' eq
3189: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3190: $safeeval)));
3191: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3192: $enc);
3193: } else {
3194: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3195: undef,1);
3196: if (!$alttag) {
3197: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3198: $src);
3199: }
3200: $currentstring.='[IMAGE: '.$alttag.']';
3201: }
3202:
3203: # and render unto TeX that which is LaTeX
3204:
3205: } elsif ($target eq 'tex') {
3206: #
3207: # The alignment will require some superstructure to be put around
3208: # the \includegraphics stuff. At present we can only partially
3209: # simulate the alignments offered by html.
3210: #
3211: #
3212: my $align = lc(&Apache::lonxml::get_param('align',
3213: $parstack,
3214: $safeeval,
3215: undef,1));
3216: if(!$align) {
3217: $align = "bottom"; # This is html's default so it's ours too.
3218: }
3219: #
3220: &Apache::lonxml::debug("Alignemnt = $align");
3221: # LaTeX's image/text wrapping is really bad since it wants to
3222: # make figures float.
3223: # The user has the optional parameter (applicable only to l/r
3224: # alignment to use the picins/parpic directive to get wrapped text
3225: # this is also imperfect.. that's why we give them a choice...
3226: # so they can't yell at us for our choice.
3227: #
3228: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3229: $parstack,
3230: $safeeval,
3231: undef,0);
3232: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3233: if(!$latex_rendering) {
3234: $latex_rendering = "texwrap";
3235: }
3236: # using texwrap inside a table does not work. So, if after all of this,
3237: # texwrap is on, we turn it off if we detect we're in a table:
3238: #
3239: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3240: $latex_rendering = 'parpic';
3241: }
3242:
3243: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3244:
3245: #if original bmp/gif/jpg/png file exist do following:
3246: my $origsrc=$src;
3247: my ($path,$file) = &get_eps_image($src);
3248: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3249: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3250: &Apache::lonxml::debug("path = $path file = $file src = $src");
3251: if (-e $src) {
3252: &Apache::lonxml::debug("$src exists");
3253: my ($height_param,$width_param)=
3254: &image_size($origsrc,0.3,$parstack,$safeeval);
3255: my $size;
3256: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3257: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3258: # Default size if not able to extract that (e.g. eps image).
3259:
3260: # &Apache::lonnet::logthis("Size = $size");
3261:
3262: $size='['.$size;
3263: $size=~s/,$/]/;
3264: $currentstring .= '\graphicspath{{'.$path.'}}'
3265: .'\includegraphics'.$size.'{'.$file.'} ';
3266: my $closure;
3267: ($currentstring, $closure) = &align_latex_image($align,
3268: $latex_rendering,
3269: $currentstring,
3270: $width_param,
3271: $height_param);
3272: $currentstring .= $closure;
3273:
3274: } else {
3275: &Apache::lonxml::debug("$src does not exist");
3276: #original image file doesn't exist so check the alt attribute
3277: my $alt =
3278: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3279: unless ($alt) {
3280: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3281: }
3282:
3283: if ($alt) { $currentstring .= ' '.$alt.' '; }
3284: }
3285:
3286: # And here's where the semi-quote breaks down: allow the user
3287: # to edit the beast as well by rendering the problem for edit:
3288: } elsif ($target eq 'edit') {
3289: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3290: $currentstring .=&Apache::edit::tag_start($target,$token);
3291: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3292: &Apache::edit::browse('src',undef,'alt',$only).' '.
3293: &Apache::edit::search('src',undef,'alt').'<br />';
3294: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3295: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3296: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3297: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3298: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3299: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3300: ['','bottom','middle','top','left','right'],$token,5);
3301: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3302: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3303: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3304: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
3305:
3306: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3307: ['no','yes'], $token, 2);
3308: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
3309: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
3310: }
3311: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3312: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3313: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3314: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3315:
3316: if ($token->[2]{'src'}=~/\$/) {
3317: $currentstring.=&mt('Variable image source');
3318: } elsif ($token->[2]{'src'}=~/\S/) {
3319: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3320: if ($width) { $currentstring.=' width="'.$width.'" '; }
3321: if ($height) { $currentstring.=' height="'.$height.'" '; }
3322: $currentstring .= ' />';
3323: } else {
3324: $currentstring.=&mt("No image source specified");
3325: }
3326: } elsif ($target eq 'modified') {
3327: my ($osrc,$owidth,$oheight)=
3328: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3329: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3330: $safeeval,'src','alt','align',
3331: 'TeXwidth','TeXheight', 'TeXwrap',
3332: 'width','height','encrypturl');
3333: my ($nsrc,$nwidth,$nheight)=
3334: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3335: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3336: &image_replication($loc);
3337: my ($iwidth,$iheight);
3338: if (-e $loc) {
3339: my $image = Image::Magick->new;
3340: $image->Read($loc);
3341: ($iwidth, $iheight) = ($image->Get('width'),
3342: $image->Get('height'));
3343: }
3344: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3345: # changed image or no size specified,
3346: # if they didn't explicitly change the
3347: # width or height use the ones from the image
3348: if ($iwidth && $iheight) {
3349: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3350: $token->[2]{'width'} = $iwidth;$ctag=1;
3351: }
3352: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3353: $token->[2]{'height'}=$iheight;$ctag=1;
3354: }
3355: }
3356: }
3357: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3358: # if we don't have a width or height
3359: if ($iwidth && $cwidth && !$cheight) {
3360: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3361: }
3362: if ($iheight && $cheight && !$cwidth) {
3363: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3364: }
3365: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3366: }
3367:
3368: return $currentstring;
3369: }
3370:
3371: sub end_img {
3372: my ($target,$token) = @_;
3373: my $currentstring = '';
3374: if ($target eq 'web' || $target eq 'webgrade') {
3375: $currentstring = $token->[2];
3376: } elsif ($target eq 'tex') {
3377: $currentstring = '';
3378: }
3379: return $currentstring;
3380: }
3381:
3382: #-- <applet> tag (end tag required)
3383: sub start_applet {
3384: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3385:
3386: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3387: &Apache::lonxml::extlink($code);
3388: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3389: undef,1);
3390: &Apache::lonxml::extlink($archive);
3391: my $currentstring = '';
3392: if ($target eq 'web' || $target eq 'webgrade') {
3393: if ($env{'browser.appletsuppress'} ne 'on') {
3394: $currentstring = &Apache::lonenc::encrypt_ref($token,
3395: {'code'=>$code,
3396: 'archive'=>$archive}
3397: );
3398: } else {
3399: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3400: $safeeval,undef,1);
3401: unless ($alttag) {
3402: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3403: $code);
3404: }
3405: $currentstring='[APPLET: '.$alttag.']';
3406: }
3407: } elsif ($target eq 'tex') {
3408: # Turn off some stuff we can't be inside thank you LaTeX
3409:
3410:
3411: my $restart_sub = 0;
3412: my $restart_sup = 0;
3413:
3414: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3415: # using the start_ stop_ functions.. those tags only care about
3416: # $target.
3417:
3418: if (&is_inside_of($tagstack, "sub")) {
3419: $restart_sub = 1;
3420: $currentstring .= &end_sub($target, $token, $tagstack,
3421: $parstack, $parser, $safeeval);
3422: }
3423: if (&is_inside_of($tagstack, "sup")) {
3424: $restart_sup = 1;
3425: $currentstring .= &end_sup($target, $token, $tagstack,
3426: $parstack, $parser, $safeeval);
3427: }
3428:
3429: # Now process the applet; just replace it with its alt attribute.
3430:
3431: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3432: $safeeval,undef,1);
3433: unless ($alttag) {
3434: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3435: undef,1);
3436: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3437: $code);
3438: }
3439: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3440: '.}\end{center}';
3441:
3442: # Turn stuff back on that we can't be inside of.
3443:
3444: if ($restart_sub) {
3445: $currentstring .= &start_sub($target, $token, $tagstack,
3446: $parstack, $parser, $safeeval);
3447: }
3448: if ($restart_sup) {
3449: $currentstring .= &start_sup($target, $token, $tagstack,
3450: $parstack, $parser, $safeeval);
3451: }
3452: }
3453: return $currentstring;
3454: }
3455:
3456: sub end_applet {
3457: my ($target,$token) = @_;
3458: my $currentstring = '';
3459: if ($target eq 'web' || $target eq 'webgrade') {
3460: $currentstring = $token->[2];
3461: } elsif ($target eq 'tex') {
3462: }
3463: return $currentstring;
3464: }
3465:
3466: #-- <embed> tag (end tag optional/required)
3467: sub start_embed {
3468: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3469: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3470: &Apache::lonxml::extlink($src);
3471: my $currentstring = '';
3472: if ($target eq 'web' || $target eq 'webgrade') {
3473: if ($env{'browser.embedsuppress'} ne 'on') {
3474: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3475: } else {
3476: my $alttag=&Apache::lonxml::get_param
3477: ('alt',$parstack,$safeeval,undef,1);
3478: unless ($alttag) {
3479: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3480: }
3481: $currentstring='[EMBED: '.$alttag.']';
3482: }
3483: } elsif ($target eq 'tex') {
3484: }
3485: return $currentstring;
3486: }
3487:
3488: sub end_embed {
3489: my ($target,$token) = @_;
3490: my $currentstring = '';
3491: if ($target eq 'web' || $target eq 'webgrade') {
3492: $currentstring = $token->[2];
3493: } elsif ($target eq 'tex') {
3494: }
3495: return $currentstring;
3496: }
3497:
3498: #-- <param> tag (end tag forbidden)
3499: sub start_param {
3500: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3501: if (&Apache::lonxml::get_param('name',$parstack,
3502: $safeeval,undef,1)=~/^cabbase$/i) {
3503: my $value=&Apache::lonxml::get_param('value',$parstack,
3504: $safeeval,undef,1);
3505: &Apache::lonxml::extlink($value);
3506: }
3507:
3508: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3509: &Apache::lonxml::extlink($src);
3510: my $currentstring = '';
3511: if ($target eq 'web' || $target eq 'webgrade') {
3512: my %toconvert;
3513: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3514: if ($src) { $toconvert{'src'}= $src; }
3515: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3516: undef,1);
3517: if ($name=~/^cabbase$/i) {
3518: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3519: $safeeval,undef,1);
3520: }
3521: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3522: } elsif ($target eq 'tex') {
3523: }
3524: return $currentstring;
3525: }
3526:
3527: sub end_param {
3528: my ($target,$token) = @_;
3529: my $currentstring = '';
3530: if ($target eq 'web' || $target eq 'webgrade') {
3531: $currentstring = $token->[2];
3532: } elsif ($target eq 'tex') {
3533: }
3534: return $currentstring;
3535: }
3536:
3537: #-- <allow> tag
3538: sub start_allow {
3539: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3540: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3541: &Apache::lonxml::extlink($src);
3542:
3543: if ($target eq 'tex') { &image_replication($src); }
3544: my $result;
3545: if ($target eq 'edit') {
3546: $result .=&Apache::edit::tag_start($target,$token);
3547: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3548: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3549: } elsif ($target eq 'modified') {
3550: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3551: $safeeval,'src');
3552: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3553: }
3554: return $result;
3555: }
3556:
3557: sub end_allow {
3558: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3559: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3560: return '';
3561: }
3562:
3563: #-- Frames (end tag required)
3564: #-- <frameset>
3565: sub start_frameset {
3566: my ($target,$token) = @_;
3567: my $currentstring = ''; # Close any pending para.
3568: if ($target eq 'web' || $target eq 'webgrade') {
3569: $currentstring =
3570: &Apache::loncommon::start_page($Apache::londefdef::title,
3571: $Apache::londefdef::head,
3572: {'add_entries' => $token->[2],
3573: # 'no_title' => 1,
3574: 'force_register' => 1,
3575: 'frameset' => 1,});
3576:
3577: }
3578: return $currentstring;
3579: }
3580:
3581: sub end_frameset {
3582: my ($target,$token) = @_;
3583: my $currentstring = '';
3584: if ($target eq 'web' || $target eq 'webgrade') {
3585: $currentstring = $token->[2];
3586: }
3587: return $currentstring;
3588: }
3589:
3590: #-- <xmp> (end tag required)
3591: sub start_xmp {
3592: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3593: my $currentstring = '';
3594: if ($target eq 'web' || $target eq 'webgrade') {
3595: $currentstring .= $token->[4];
3596: } elsif ($target eq 'tex') {
3597: $currentstring .= '\begin{verbatim}';
3598: }
3599: return $currentstring;
3600: }
3601:
3602: sub end_xmp {
3603: my ($target,$token) = @_;
3604: my $currentstring = '';
3605: if ($target eq 'web' || $target eq 'webgrade') {
3606: $currentstring .= $token->[2];
3607: } elsif ($target eq 'tex') {
3608: $currentstring .= '\end{verbatim}';
3609: }
3610: return $currentstring;
3611: }
3612:
3613: #-- <pre> (end tag required)
3614: sub start_pre {
3615: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3616: my $currentstring = &end_p(); # close off pending <p>
3617: if ($target eq 'web' || $target eq 'webgrade') {
3618: $currentstring .= $token->[4];
3619: } elsif ($target eq 'tex') {
3620: $currentstring .= '\begin{verbatim}';
3621: &Apache::lonxml::disable_LaTeX_substitutions();
3622: }
3623: return $currentstring;
3624: }
3625:
3626: sub end_pre {
3627: my ($target,$token) = @_;
3628: my $currentstring = '';
3629: if ($target eq 'web' || $target eq 'webgrade') {
3630: $currentstring .= $token->[2];
3631: } elsif ($target eq 'tex') {
3632: $currentstring .= '\end{verbatim}';
3633: &Apache::lonxml::enable_LaTeX_substitutions();
3634: }
3635: return $currentstring;
3636: }
3637:
3638: #-- <insert>
3639: sub start_insert {
3640: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3641: my $currentstring = '';
3642: if ($target eq 'web' || $target eq 'webgrade') {
3643: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3644: $currentstring .= '<b>'.$display.'</b>';;
3645: }
3646: return $currentstring;
3647: }
3648:
3649: sub end_insert {
3650: my ($target,$token) = @_;
3651: my $currentstring = '';
3652: if ($target eq 'web' || $target eq 'webgrade') {
3653: $currentstring .= '';
3654: }
3655: return $currentstring;
3656: }
3657:
3658: #-- <externallink>
3659: sub start_externallink {
3660: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3661: my $currentstring = '';
3662: if ($target eq 'web' || $target eq 'webgrade') {
3663: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3664: $currentstring .= '<b>'.$display.'</b>';;
3665: }
3666: return $currentstring;
3667: }
3668:
3669: sub end_externallink {
3670: my ($target,$token) = @_;
3671: my $currentstring = '';
3672: if ($target eq 'web' || $target eq 'webgrade') {
3673: $currentstring .= '';
3674: }
3675: return $currentstring;
3676: }
3677:
3678: #-- <blankspace heigth="">
3679: sub start_blankspace {
3680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3681: my $currentstring = &end_p(); # closes off any unclosed <p>
3682: if ($target eq 'tex') {
3683: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3684: $currentstring .= '\vskip '.$howmuch.' ';
3685: }
3686: return $currentstring;
3687: }
3688:
3689: sub end_blankspace {
3690: my ($target,$token) = @_;
3691: my $currentstring = '';
3692: if ($target eq 'tex') {
3693: $currentstring .= '';
3694: }
3695: return $currentstring;
3696: }
3697:
3698: #-- <abbr> tag (end tag required)
3699: sub start_abbr {
3700: my ($target,$token) = @_;
3701: my $currentstring = '';
3702: if ($target eq 'web' || $target eq 'webgrade') {
3703: $currentstring = $token->[4];
3704: }
3705: return $currentstring;
3706: }
3707:
3708: sub end_abbr {
3709: my ($target,$token) = @_;
3710: my $currentstring = '';
3711: if ($target eq 'web' || $target eq 'webgrade') {
3712: $currentstring = $token->[2];
3713: }
3714: return $currentstring;
3715: }
3716:
3717: #-- <acronym> tag (end tag required)
3718: sub start_acronym {
3719: my ($target,$token) = @_;
3720: my $currentstring = '';
3721: if ($target eq 'web' || $target eq 'webgrade') {
3722: $currentstring = $token->[4];
3723: }
3724: return $currentstring;
3725: }
3726:
3727: sub end_acronym {
3728: my ($target,$token) = @_;
3729: my $currentstring = '';
3730: if ($target eq 'web' || $target eq 'webgrade') {
3731: $currentstring = $token->[2];
3732: }
3733: return $currentstring;
3734: }
3735:
3736: #-- <area> tag (end tag forbidden)
3737: sub start_area {
3738: my ($target,$token) = @_;
3739: my $currentstring = '';
3740: if ($target eq 'web' || $target eq 'webgrade') {
3741: $currentstring = $token->[4];
3742: }
3743: return $currentstring;
3744: }
3745:
3746: sub end_area {
3747: my ($target,$token) = @_;
3748: my $currentstring = '';
3749: if ($target eq 'web' || $target eq 'webgrade') {
3750: $currentstring = $token->[2];
3751: }
3752: return $currentstring;
3753: }
3754:
3755: #-- <base> tag (end tag forbidden)
3756: sub start_base {
3757: my ($target,$token) = @_;
3758: my $currentstring = '';
3759: if ($target eq 'web' || $target eq 'webgrade') {
3760: $currentstring = $token->[4];
3761: }
3762: return $currentstring;
3763: }
3764:
3765: sub end_base {
3766: my ($target,$token) = @_;
3767: my $currentstring = '';
3768: if ($target eq 'web' || $target eq 'webgrade') {
3769: $currentstring = $token->[2];
3770: }
3771: return $currentstring;
3772: }
3773:
3774: #-- <bdo> tag (end tag required)
3775: sub start_bdo {
3776: my ($target,$token) = @_;
3777: my $currentstring = '';
3778: if ($target eq 'web' || $target eq 'webgrade') {
3779: $currentstring = $token->[4];
3780: }
3781: return $currentstring;
3782: }
3783:
3784: sub end_bdo {
3785: my ($target,$token) = @_;
3786: my $currentstring = '';
3787: if ($target eq 'web' || $target eq 'webgrade') {
3788: $currentstring = $token->[2];
3789: }
3790: return $currentstring;
3791: }
3792:
3793: #-- <bgsound> tag (end tag optional)
3794: sub start_bgsound {
3795: my ($target,$token) = @_;
3796: my $currentstring = '';
3797: if ($target eq 'web' || $target eq 'webgrade') {
3798: $currentstring = $token->[4];
3799: }
3800: return $currentstring;
3801: }
3802:
3803: sub end_bgsound {
3804: my ($target,$token) = @_;
3805: my $currentstring = '';
3806: if ($target eq 'web' || $target eq 'webgrade') {
3807: $currentstring = $token->[2];
3808: }
3809: return $currentstring;
3810: }
3811:
3812: #-- <blink> tag (end tag required)
3813: sub start_blink {
3814: my ($target,$token) = @_;
3815: my $currentstring = '';
3816: if ($target eq 'web' || $target eq 'webgrade') {
3817: $currentstring = $token->[4];
3818: }
3819: return $currentstring;
3820: }
3821:
3822: sub end_blink {
3823: my ($target,$token) = @_;
3824: my $currentstring = '';
3825: if ($target eq 'web' || $target eq 'webgrade') {
3826: $currentstring = $token->[2];
3827: }
3828: return $currentstring;
3829: }
3830:
3831: #-- <blockquote> tag (end tag required)
3832: sub start_blockquote {
3833: my ($target,$token) = @_;
3834: my $currentstring = &end_p(); # Close any unclosed <p>
3835: if ($target eq 'web' || $target eq 'webgrade') {
3836: $currentstring .= $token->[4];
3837: }
3838: if ($target eq 'tex') {
3839: $currentstring .= '\begin{quote}';
3840: }
3841: return $currentstring;
3842: }
3843:
3844: sub end_blockquote {
3845: my ($target,$token) = @_;
3846: my $currentstring = '';
3847: if ($target eq 'web' || $target eq 'webgrade') {
3848: $currentstring = $token->[2];
3849: }
3850: if ($target eq 'tex') {
3851: $currentstring = '\end{quote}';
3852: }
3853: return $currentstring;
3854: }
3855:
3856: #-- <button> tag (end tag required)
3857: sub start_button {
3858: my ($target,$token) = @_;
3859: my $currentstring = '';
3860: if ($target eq 'web' || $target eq 'webgrade') {
3861: $currentstring = $token->[4];
3862: }
3863: return $currentstring;
3864: }
3865:
3866: sub end_button {
3867: my ($target,$token) = @_;
3868: my $currentstring = '';
3869: if ($target eq 'web' || $target eq 'webgrade') {
3870: $currentstring = $token->[2];
3871: }
3872: return $currentstring;
3873: }
3874:
3875: #-- <caption> tag (end tag required)
3876: sub start_caption {
3877: my ($target,$token) = @_;
3878: my $currentstring = '';
3879: if ($target eq 'web' || $target eq 'webgrade') {
3880: $currentstring = $token->[4];
3881: }
3882: return $currentstring;
3883: }
3884:
3885: sub end_caption {
3886: my ($target,$token) = @_;
3887: my $currentstring = '';
3888: if ($target eq 'web' || $target eq 'webgrade') {
3889: $currentstring = $token->[2];
3890: }
3891: return $currentstring;
3892: }
3893:
3894: #-- <col> tag (end tag forbdden)
3895: sub start_col {
3896: my ($target,$token) = @_;
3897: my $currentstring = '';
3898: if ($target eq 'web' || $target eq 'webgrade') {
3899: $currentstring = $token->[4];
3900: }
3901: return $currentstring;
3902: }
3903:
3904: sub end_col {
3905: my ($target,$token) = @_;
3906: my $currentstring = '';
3907: if ($target eq 'web' || $target eq 'webgrade') {
3908: $currentstring = $token->[2];
3909: }
3910: return $currentstring;
3911: }
3912:
3913: #-- <colgroup> tag (end tag optional)
3914: sub start_colgroup {
3915: my ($target,$token) = @_;
3916: my $currentstring = '';
3917: if ($target eq 'web' || $target eq 'webgrade') {
3918: $currentstring = $token->[4];
3919: }
3920: return $currentstring;
3921: }
3922:
3923: sub end_colgroup {
3924: my ($target,$token) = @_;
3925: my $currentstring = '';
3926: if ($target eq 'web' || $target eq 'webgrade') {
3927: $currentstring = $token->[2];
3928: }
3929: return $currentstring;
3930: }
3931:
3932: #-- <del> tag (end tag required)
3933: sub start_del {
3934: my ($target,$token) = @_;
3935: my $currentstring = '';
3936: if ($target eq 'web' || $target eq 'webgrade') {
3937: $currentstring = $token->[4];
3938: }
3939: return $currentstring;
3940: }
3941:
3942: sub end_del {
3943: my ($target,$token) = @_;
3944: my $currentstring = '';
3945: if ($target eq 'web' || $target eq 'webgrade') {
3946: $currentstring = $token->[2];
3947: }
3948: return $currentstring;
3949: }
3950:
3951: #-- <fieldset> tag (end tag required)
3952: sub start_fieldset {
3953: my ($target,$token) = @_;
3954: my $currentstring = '';
3955: if ($target eq 'web' || $target eq 'webgrade') {
3956: $currentstring = $token->[4];
3957: }
3958: return $currentstring;
3959: }
3960:
3961: sub end_fieldset {
3962: my ($target,$token) = @_;
3963: my $currentstring = '';
3964: if ($target eq 'web' || $target eq 'webgrade') {
3965: $currentstring = $token->[2];
3966: }
3967: return $currentstring;
3968: }
3969:
3970: #-- <frame> tag (end tag forbidden)
3971: sub start_frame {
3972: my ($target,$token) = @_;
3973: my $currentstring = '';
3974: if ($target eq 'web' || $target eq 'webgrade') {
3975: $currentstring = $token->[4];
3976: }
3977: return $currentstring;
3978: }
3979:
3980: sub end_frame {
3981: my ($target,$token) = @_;
3982: my $currentstring = '';
3983: if ($target eq 'web' || $target eq 'webgrade') {
3984: $currentstring = $token->[2];
3985: }
3986: return $currentstring;
3987: }
3988:
3989: #-- <iframe> tag (end tag required)
3990: sub start_iframe {
3991: my ($target,$token) = @_;
3992: my $currentstring = '';
3993: if ($target eq 'web' || $target eq 'webgrade') {
3994: $currentstring = $token->[4];
3995: }
3996: return $currentstring;
3997: }
3998:
3999: sub end_iframe {
4000: my ($target,$token) = @_;
4001: my $currentstring = '';
4002: if ($target eq 'web' || $target eq 'webgrade') {
4003: $currentstring = $token->[2];
4004: }
4005: return $currentstring;
4006: }
4007:
4008: #-- <ins> tag (end tag required)
4009: sub start_ins {
4010: my ($target,$token) = @_;
4011: my $currentstring = '';
4012: if ($target eq 'web' || $target eq 'webgrade') {
4013: $currentstring = $token->[4];
4014: }
4015: return $currentstring;
4016: }
4017:
4018: sub end_ins {
4019: my ($target,$token) = @_;
4020: my $currentstring = '';
4021: if ($target eq 'web' || $target eq 'webgrade') {
4022: $currentstring = $token->[2];
4023: }
4024: return $currentstring;
4025: }
4026:
4027: #-- <isindex> tag (end tag forbidden)
4028: sub start_isindex {
4029: my ($target,$token) = @_;
4030: my $currentstring = '';
4031: if ($target eq 'web' || $target eq 'webgrade') {
4032: $currentstring = $token->[4];
4033: }
4034: return $currentstring;
4035: }
4036:
4037: sub end_isindex {
4038: my ($target,$token) = @_;
4039: my $currentstring = '';
4040: if ($target eq 'web' || $target eq 'webgrade') {
4041: $currentstring = $token->[2];
4042: }
4043: return $currentstring;
4044: }
4045:
4046: #-- <keygen> tag (end tag forbidden)
4047: sub start_keygen {
4048: my ($target,$token) = @_;
4049: my $currentstring = '';
4050: if ($target eq 'web' || $target eq 'webgrade') {
4051: $currentstring = $token->[4];
4052: }
4053: return $currentstring;
4054: }
4055:
4056: sub end_keygen {
4057: my ($target,$token) = @_;
4058: my $currentstring = '';
4059: if ($target eq 'web' || $target eq 'webgrade') {
4060: $currentstring = $token->[2];
4061: }
4062: return $currentstring;
4063: }
4064:
4065: #-- <label> tag
4066: sub start_label {
4067: my ($target,$token) = @_;
4068: my $currentstring = '';
4069: if ($target eq 'web' || $target eq 'webgrade') {
4070: $currentstring = $token->[4];
4071: }
4072: return $currentstring;
4073: }
4074:
4075: sub end_label {
4076: my ($target,$token) = @_;
4077: my $currentstring = '';
4078: if ($target eq 'web' || $target eq 'webgrade') {
4079: $currentstring = $token->[2];
4080: }
4081: return $currentstring;
4082: }
4083:
4084: #-- <layer> tag (end tag required)
4085: sub start_layer {
4086: my ($target,$token) = @_;
4087: my $currentstring = '';
4088: if ($target eq 'web' || $target eq 'webgrade') {
4089: $currentstring = $token->[4];
4090: }
4091: return $currentstring;
4092: }
4093:
4094: sub end_layer {
4095: my ($target,$token) = @_;
4096: my $currentstring = '';
4097: if ($target eq 'web' || $target eq 'webgrade') {
4098: $currentstring = $token->[2];
4099: }
4100: return $currentstring;
4101: }
4102:
4103: #-- <legend> tag (end tag required)
4104: sub start_legend {
4105: my ($target,$token) = @_;
4106: my $currentstring = '';
4107: if ($target eq 'web' || $target eq 'webgrade') {
4108: $currentstring = $token->[4];
4109: }
4110: return $currentstring;
4111: }
4112:
4113: sub end_legend {
4114: my ($target,$token) = @_;
4115: my $currentstring = '';
4116: if ($target eq 'web' || $target eq 'webgrade') {
4117: $currentstring = $token->[2];
4118: }
4119: return $currentstring;
4120: }
4121:
4122: #-- <link> tag (end tag forbidden)
4123: sub start_link {
4124: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4125: my $currentstring = '';
4126: if ($target eq 'web' || $target eq 'webgrade') {
4127: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4128: undef,1);
4129: &Apache::lonxml::extlink($href);
4130: $currentstring = $token->[4];
4131: }
4132: return $currentstring;
4133: }
4134:
4135: sub end_link {
4136: my ($target,$token) = @_;
4137: my $currentstring = '';
4138: if ($target eq 'web' || $target eq 'webgrade') {
4139: $currentstring = $token->[2];
4140: }
4141: return $currentstring;
4142: }
4143:
4144: #-- <marquee> tag (end tag optional)
4145: sub start_marquee {
4146: my ($target,$token) = @_;
4147: my $currentstring = '';
4148: if ($target eq 'web' || $target eq 'webgrade') {
4149: $currentstring = $token->[4];
4150: }
4151: return $currentstring;
4152: }
4153:
4154: sub end_marquee {
4155: my ($target,$token) = @_;
4156: my $currentstring = '';
4157: if ($target eq 'web' || $target eq 'webgrade') {
4158: $currentstring = $token->[2];
4159: }
4160: return $currentstring;
4161: }
4162:
4163: #-- <multicol> tag (end tag required)
4164: sub start_multicol {
4165: my ($target,$token) = @_;
4166: my $currentstring = &end_p(); # Close any pending <p>
4167: if ($target eq 'web' || $target eq 'webgrade') {
4168: $currentstring .= $token->[4];
4169: }
4170: return $currentstring;
4171: }
4172:
4173: sub end_multicol {
4174: my ($target,$token) = @_;
4175: my $currentstring = '';
4176: if ($target eq 'web' || $target eq 'webgrade') {
4177: $currentstring = $token->[2];
4178: }
4179: return $currentstring;
4180: }
4181:
4182: #-- <nobr> tag (end tag required)
4183: sub start_nobr {
4184: my ($target,$token) = @_;
4185: my $currentstring = '';
4186: if ($target eq 'web' || $target eq 'webgrade') {
4187: $currentstring = $token->[4];
4188: } elsif ($target eq 'tex') {
4189: $currentstring='\mbox{';
4190: }
4191: return $currentstring;
4192: }
4193:
4194: sub end_nobr {
4195: my ($target,$token) = @_;
4196: my $currentstring = '';
4197: if ($target eq 'web' || $target eq 'webgrade') {
4198: $currentstring = $token->[2];
4199: } elsif ($target eq 'tex') {
4200: $currentstring='}';
4201: }
4202: return $currentstring;
4203: }
4204:
4205: #-- <noembed> tag (end tag required)
4206: sub start_noembed {
4207: my ($target,$token) = @_;
4208: my $currentstring = '';
4209: if ($target eq 'web' || $target eq 'webgrade') {
4210: $currentstring = $token->[4];
4211: }
4212: return $currentstring;
4213: }
4214:
4215: sub end_noembed {
4216: my ($target,$token) = @_;
4217: my $currentstring = '';
4218: if ($target eq 'web' || $target eq 'webgrade') {
4219: $currentstring = $token->[2];
4220: }
4221: return $currentstring;
4222: }
4223:
4224: #-- <noframes> tag (end tag required)
4225: sub start_noframes {
4226: my ($target,$token) = @_;
4227: my $currentstring = '';
4228: if ($target eq 'web' || $target eq 'webgrade') {
4229: $currentstring = $token->[4];
4230: }
4231: return $currentstring;
4232: }
4233:
4234: sub end_noframes {
4235: my ($target,$token) = @_;
4236: my $currentstring = '';
4237: if ($target eq 'web' || $target eq 'webgrade') {
4238: $currentstring = $token->[2];
4239: }
4240: return $currentstring;
4241: }
4242:
4243: #-- <nolayer> tag (end tag required)
4244: sub start_nolayer {
4245: my ($target,$token) = @_;
4246: my $currentstring = '';
4247: if ($target eq 'web' || $target eq 'webgrade') {
4248: $currentstring = $token->[4];
4249: }
4250: return $currentstring;
4251: }
4252:
4253: sub end_nolayer {
4254: my ($target,$token) = @_;
4255: my $currentstring = '';
4256: if ($target eq 'web' || $target eq 'webgrade') {
4257: $currentstring = $token->[2];
4258: }
4259: return $currentstring;
4260: }
4261:
4262: #-- <noscript> tag (end tag required)
4263: sub start_noscript {
4264: my ($target,$token) = @_;
4265: my $currentstring = '';
4266: if ($target eq 'web' || $target eq 'webgrade') {
4267: $currentstring = $token->[4];
4268: }
4269: return $currentstring;
4270: }
4271:
4272: sub end_noscript {
4273: my ($target,$token) = @_;
4274: my $currentstring = '';
4275: if ($target eq 'web' || $target eq 'webgrade') {
4276: $currentstring = $token->[2];
4277: }
4278: return $currentstring;
4279: }
4280:
4281: #-- <object> tag (end tag required)
4282: sub start_object {
4283: my ($target,$token) = @_;
4284: my $currentstring = '';
4285: if ($target eq 'web' || $target eq 'webgrade') {
4286: $currentstring = $token->[4];
4287: }
4288: return $currentstring;
4289: }
4290:
4291: sub end_object {
4292: my ($target,$token) = @_;
4293: my $currentstring = '';
4294: if ($target eq 'web' || $target eq 'webgrade') {
4295: $currentstring = $token->[2];
4296: }
4297: return $currentstring;
4298: }
4299:
4300: #-- <optgroup> tag (end tag required)
4301: sub start_optgroup {
4302: my ($target,$token) = @_;
4303: my $currentstring = '';
4304: if ($target eq 'web' || $target eq 'webgrade') {
4305: $currentstring = $token->[4];
4306: }
4307: return $currentstring;
4308: }
4309:
4310: sub end_optgroup {
4311: my ($target,$token) = @_;
4312: my $currentstring = '';
4313: if ($target eq 'web' || $target eq 'webgrade') {
4314: $currentstring = $token->[2];
4315: }
4316: return $currentstring;
4317: }
4318:
4319: #-- <samp> tag (end tag required)
4320: sub start_samp {
4321: my ($target,$token) = @_;
4322: my $currentstring = '';
4323: if ($target eq 'web' || $target eq 'webgrade') {
4324: $currentstring = $token->[4];
4325: } elsif ($target eq 'tex') {
4326: $currentstring='\texttt{';
4327: }
4328: return $currentstring;
4329: }
4330:
4331: sub end_samp {
4332: my ($target,$token) = @_;
4333: my $currentstring = '';
4334: if ($target eq 'web' || $target eq 'webgrade') {
4335: $currentstring = $token->[2];
4336: } elsif ($target eq 'tex') {
4337: $currentstring='}';
4338: }
4339: return $currentstring;
4340: }
4341:
4342: #-- <server> tag
4343: sub start_server {
4344: my ($target,$token) = @_;
4345: my $currentstring = '';
4346: if ($target eq 'web' || $target eq 'webgrade') {
4347: $currentstring = $token->[4];
4348: }
4349: return $currentstring;
4350: }
4351:
4352: sub end_server {
4353: my ($target,$token) = @_;
4354: my $currentstring = '';
4355: if ($target eq 'web' || $target eq 'webgrade') {
4356: $currentstring = $token->[2];
4357: }
4358: return $currentstring;
4359: }
4360:
4361: #-- <spacer> tag (end tag forbidden)
4362: sub start_spacer {
4363: my ($target,$token) = @_;
4364: my $currentstring = &end_p(); # Close off any open <p> tag.
4365: if ($target eq 'web' || $target eq 'webgrade') {
4366: $currentstring .= $token->[4];
4367: }
4368: return $currentstring;
4369: }
4370:
4371: sub end_spacer {
4372: my ($target,$token) = @_;
4373: my $currentstring = '';
4374: if ($target eq 'web' || $target eq 'webgrade') {
4375: $currentstring = $token->[2];
4376: }
4377: return $currentstring;
4378: }
4379:
4380: #-- <span> tag (end tag required)
4381: sub start_span {
4382: my ($target,$token) = @_;
4383: my $currentstring = '';
4384: if ($target eq 'web' || $target eq 'webgrade') {
4385: $currentstring = $token->[4];
4386: }
4387: return $currentstring;
4388: }
4389:
4390: sub end_span {
4391: my ($target,$token) = @_;
4392: my $currentstring = '';
4393: if ($target eq 'web' || $target eq 'webgrade') {
4394: $currentstring = $token->[2];
4395: }
4396: return $currentstring;
4397: }
4398:
4399: #-- <tbody> tag (end tag optional)
4400: sub start_tbody {
4401: my ($target,$token) = @_;
4402: my $currentstring = '';
4403: if ($target eq 'web' || $target eq 'webgrade') {
4404: $currentstring = $token->[4];
4405: }
4406: return $currentstring;
4407: }
4408:
4409: sub end_tbody {
4410: my ($target,$token) = @_;
4411: my $currentstring = '';
4412: if ($target eq 'web' || $target eq 'webgrade') {
4413: $currentstring = $token->[2];
4414: }
4415: return $currentstring;
4416: }
4417:
4418: #-- <tfoot> tag (end tag optional)
4419: sub start_tfoot {
4420: my ($target,$token) = @_;
4421: my $currentstring = '';
4422: if ($target eq 'web' || $target eq 'webgrade') {
4423: $currentstring = $token->[4];
4424: }
4425: return $currentstring;
4426: }
4427:
4428: sub end_tfoot {
4429: my ($target,$token) = @_;
4430: my $currentstring = '';
4431: if ($target eq 'web' || $target eq 'webgrade') {
4432: $currentstring = $token->[2];
4433: }
4434: return $currentstring;
4435: }
4436:
4437: #-- <thead> tag (end tag optional)
4438: sub start_thead {
4439: my ($target,$token) = @_;
4440: my $currentstring = '';
4441: if ($target eq 'web' || $target eq 'webgrade') {
4442: $currentstring = $token->[4];
4443: }
4444: return $currentstring;
4445: }
4446:
4447: sub end_thead {
4448: my ($target,$token) = @_;
4449: my $currentstring = '';
4450: if ($target eq 'web' || $target eq 'webgrade') {
4451: $currentstring = $token->[2];
4452: }
4453: return $currentstring;
4454: }
4455:
4456: #-- <var> tag
4457: sub start_var {
4458: my ($target,$token) = @_;
4459: my $currentstring = '';
4460: if ($target eq 'web' || $target eq 'webgrade') {
4461: $currentstring = $token->[4];
4462: } elsif ($target eq 'tex') {
4463: $currentstring = '\textit{';
4464: }
4465: return $currentstring;
4466: }
4467:
4468: sub end_var {
4469: my ($target,$token) = @_;
4470: my $currentstring = '';
4471: if ($target eq 'web' || $target eq 'webgrade') {
4472: $currentstring = $token->[2];
4473: } elsif ($target eq 'tex') {
4474: $currentstring = '}';
4475: }
4476: return $currentstring;
4477: }
4478:
4479: #-- <wbr> tag (end tag forbidden)
4480: sub start_wbr {
4481: my ($target,$token) = @_;
4482: my $currentstring = '';
4483: if ($target eq 'web' || $target eq 'webgrade') {
4484: $currentstring = $token->[4];
4485: }
4486: return $currentstring;
4487: }
4488:
4489: sub end_wbr {
4490: my ($target,$token) = @_;
4491: my $currentstring = '';
4492: if ($target eq 'web' || $target eq 'webgrade') {
4493: $currentstring = $token->[2];
4494: }
4495: return $currentstring;
4496: }
4497:
4498: #-- <hideweboutput> tag
4499: sub start_hideweboutput {
4500: my ($target,$token) = @_;
4501: if ($target eq 'web' || $target eq 'webgrade') {
4502: &Apache::lonxml::startredirection();
4503: }
4504: return '';
4505: }
4506:
4507: sub end_hideweboutput {
4508: my ($target,$token) = @_;
4509: my $currentstring = '';
4510: if ($target eq 'web' || $target eq 'webgrade') {
4511: $currentstring = &Apache::lonxml::endredirection();
4512: }
4513: return '';
4514: }
4515:
4516:
4517: sub image_replication {
4518: my $src = shift;
4519: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4520: #replicates eps or ps
4521: my $epssrc = my $pssrc = $src;
4522: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4523: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4524: if (not -e $epssrc && not -e $pssrc) {
4525: my $result=&Apache::lonnet::repcopy($epssrc);
4526: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4527: }
4528: return '';
4529: }
4530:
4531:
4532:
4533: sub resize_image {
4534: my ($height_param, $width_param, $scaling,
4535: $parstack, $safeeval, $depth, $cis) = @_;
4536:
4537: # First apply the scaling...
4538:
4539: $height_param = $height_param * $scaling;
4540: $width_param = $width_param * $scaling;
4541:
4542: #do we have any specified LaTeX size of the picture?
4543: my $toget='TeXwidth';
4544: if ($cis) {
4545: $toget=lc($toget);
4546: }
4547: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4548: $safeeval,$depth,$cis);
4549: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4550: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4551: $safeeval,$depth,$cis);
4552: #do we have any specified web size of the picture?
4553: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4554: $depth,1);
4555: if ($TeXwidth) {
4556: my $old_width_param=$width_param;
4557: if ($TeXwidth=~/(\d+)\s*\%/) {
4558: $width_param = $1*$env{'form.textwidth'}/100;
4559: } else {
4560: $width_param = $TeXwidth;
4561: }
4562: if ($TeXheight) {
4563: $height_param = $TeXheight;
4564: } elsif ($old_width_param) {
4565: $height_param=$TeXwidth/$old_width_param*$height_param;
4566: }
4567: } elsif ($TeXheight) {
4568: $height_param = $TeXheight;
4569: if ($height_param) {
4570: $width_param = $TeXheight/$height_param*$width_param;
4571: }
4572: } elsif ($width) {
4573: my $old_width_param=$width_param;
4574: $width_param = $width*$scaling;
4575: if ($old_width_param) {
4576: $height_param=$width_param/$old_width_param*$height_param;
4577: }
4578: }
4579: if ($width_param > $env{'form.textwidth'}) {
4580: my $old_width_param=$width_param;
4581: $width_param =0.95*$env{'form.textwidth'};
4582: if ($old_width_param) {
4583: $height_param=$width_param/$old_width_param*$height_param;
4584: }
4585: }
4586:
4587: return ($height_param, $width_param);
4588: }
4589:
4590: sub image_size {
4591: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4592:
4593: #size of image from gif/jpg/jpeg/png
4594: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4595: if (-e $ressrc) {
4596: $src = $ressrc;
4597: }
4598: my $image = Image::Magick->new;
4599: my $current_figure = $image->Read($src);
4600: my $width_param = $image->Get('width');
4601: my $height_param = $image->Get('height');
4602: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4603: undef($image);
4604:
4605: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4606: $scaling, $parstack, $safeeval,
4607: $depth, $cis);
4608:
4609: return ($height_param, $width_param);
4610: }
4611:
4612: sub image_width {
4613: my ($height, $width) = &image_size(@_);
4614: return $width;
4615: }
4616: # Not yet 100% sure this is correct in all circumstances..
4617: # due to my uncertainty about mods to image_size.
4618: #
4619: sub image_height {
4620: my ($height, $width) = &image_size(@_);
4621: return $height;
4622: }
4623:
4624: sub get_eps_image {
4625: my ($src)=@_;
4626: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4627:
4628: # In order to prevent the substitution of the alt text, we need to
4629: # be sure the orig_src file is on system now so:
4630:
4631: if (! -e $orig_src) {
4632: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4633: }
4634: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4635: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4636: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4637: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4638: &Apache::lonxml::debug("Filelocation gives: $src");
4639: if (! -e $src) {
4640: &Apache::lonxml::debug("$src does not exist");
4641: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4642: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4643: #if replication failed try to find ps file
4644: $src=~s/\.eps$/\.ps/;
4645: &Apache::lonxml::debug("Now looking for $src");
4646: #if no ps file try to replicate it.
4647: my $didrepcopy = &Apache::lonnet::repcopy($src);
4648: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4649: if ( (not -e $src) ||
4650: ($didrepcopy ne 'ok')) {
4651: &Apache::lonxml::debug("Failed to find or replicate $src");
4652:
4653: #if replication failed try to produce eps file dynamically
4654: $src=~s/\.ps$/\.eps/;
4655: my $temp_file;
4656: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4657: my $newsrc=$orig_src;
4658: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4659: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4660: print FILE ("$newsrc\n");
4661: close(FILE);
4662: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4663: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4664: if ($sext ne "") { # Put the ext. back in to uniquify.
4665: $src =~ s/\.eps$/$sext.eps/;
4666: }
4667:
4668: }
4669:
4670: }
4671: } else {
4672: # If the postscript file has spaces in its name,
4673: # LaTeX will gratuitiously vomit. Therefore
4674: # queue such files for copy with " " replaced by "_".
4675: # printout.pm will know them by their .ps or .eps extensions.
4676: my $newsrc = $orig_src;
4677: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4678: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4679: print FILE "$src\n";
4680: close FILE;
4681: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4682: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4683: }
4684: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4685: $path =~ s/ /\_/g;
4686: $file =~ s/ /\_/g;
4687: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4688: return ($path.'/',$file);
4689: }
4690:
4691: sub eps_generation {
4692: my ($src,$file,$width_param) = @_;
4693: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4694: my $temp_file = Apache::File->new('>>'.$filename);
4695: print $temp_file "$src\n";
4696: my $newsrc = $src;
4697: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4698: $newsrc=~s{/home/httpd/html/res}{};
4699: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4700: $newsrc=~s{/\./}{/};
4701: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4702: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4703: $newsrc=~s{/home/httpd/lonUsers}{};
4704: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4705: }
4706: if ($newsrc=~m{/userfiles/}) {
4707: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4708: } else {
4709: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4710: }
4711: }
4712:
4713: sub file_path {
4714: my $src=shift;
4715: my ($file,$path);
4716: if ($src =~ m!(.*)/([^/]*)$!) {
4717: $file = $2;
4718: $path = $1.'/';
4719: }
4720: return $file,$path;
4721: }
4722:
4723:
4724: sub recalc {
4725: my $argument = shift;
4726: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4727: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4728: my $value=$1;
4729: my $units=$2;
4730: if ($units eq 'cm') {
4731: $value*=10;
4732: } elsif ($units eq 'in') {
4733: $value*=25.4;
4734: } elsif ($units eq 'pc') {
4735: $value*=(25.4*12/72.27);
4736: } elsif ($units eq 'pt') {
4737: $value*=(25.4/72.27);
4738: }
4739: return $value.' mm';
4740: }
4741:
4742: sub LATEX_length {
4743: my $garbage=shift;
4744: $garbage=~s/^\s+$//;
4745: $garbage=~s/^\s+(\S.*)/$1/;#space before
4746: $garbage=~s/(.*\S)\s+$/$1/;#space after
4747: $garbage=~s/(\s)+/$1/;#only one space
4748: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4749: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4750: $garbage=~s/([^\\])\$/$1/g;#$
4751: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4752: $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;
4753: $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;
4754: $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;
4755: $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;
4756: $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;
4757: $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;
4758: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4759: #remove some other LaTeX command
4760: $garbage=~s|\\(\w+)\\|\\|g;
4761: $garbage=~s|\\(\w+)(\s*)|$2|g;
4762: $garbage=~s|\+|11|g;
4763: my $value=length($garbage);
4764: return $value;
4765: }
4766:
4767:
4768: sub align_latex_image {
4769: my ($align, $latex_rendering, $image, $width, $height) = @_;
4770: my $currentstring; # The 1/2 wrapped image.
4771: my $closure; # The closure of the wrappage.
4772:
4773: # if it's none just return it back
4774: if ($latex_rendering eq 'none') {
4775: return ($image,'');
4776: }
4777:
4778: # If there's an alignment specification we need to honor it here.
4779: # For the horizontal alignments, we will also honor the
4780: # value of the latex specfication. The default is parbox,
4781: # and that's used for illegal values too.
4782: #
4783: # Even though we set a default alignment value, the user
4784: # could have given us an illegal value. In that case we
4785: # just use the default alignment of bottom..
4786: $currentstring = '';
4787: if ($align eq "top") {
4788: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4789: $closure = '}';
4790: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4791: my $offset = $height/2;
4792: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4793: $closure = '}';
4794: } elsif ($align eq "left") {
4795: if ($latex_rendering eq "parpic") {
4796: $currentstring .= '\parpic[l]{'.$image;
4797: $closure = '}';
4798: } elsif ($latex_rendering eq "parbox") {
4799: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4800: .$image;
4801: $closure = '\end{minipage}';
4802: } elsif ($latex_rendering eq "wrapfigure"
4803: || $latex_rendering ne 'none') { # wrapfig render
4804: $currentstring .=
4805: '\begin{wrapfigure}{l}{'.$width.'mm}'
4806: .'\scalebox{1.0}{'.$image;
4807: $closure = '}\end{wrapfigure}';
4808: }
4809: } elsif ($align eq "right") {
4810: if ($latex_rendering eq "parpic") {
4811: $currentstring .= '\parpic[r]{'.$image;
4812: $closure = '}';
4813: } elsif ($latex_rendering eq "parbox") {
4814: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4815: .$image;
4816: $closure = '\end{minipage}';
4817: } elsif ($latex_rendering eq "wrapfigure"
4818: || $latex_rendering ne 'none') { # wrapfig render
4819: $currentstring .=
4820: '\begin{wrapfigure}{r}{'.$width.'mm}'
4821: .'\scalebox{1.0}{'.$image;
4822: $closure = '}\end{wrapfigure}';
4823: }
4824: } else { # Bottom is also default.
4825: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4826: $currentstring .= "{$image";
4827: $closure = '}';
4828: }
4829: return ($currentstring, $closure);
4830: }
4831:
4832:
4833: sub is_inside_of {
4834: my ($tagstack, $tag) = @_;
4835: my @stack = @$tagstack;
4836: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4837: if ($stack[$i] eq $tag) {
4838: return 1;
4839: }
4840: }
4841: return 0;
4842: }
4843:
4844:
4845: #
4846: # This sub provides the typical LaTeX prefix matter for tex output:
4847: #
4848: sub latex_header {
4849: my ($mode) = @_;
4850: my $currentstring = '';
4851:
4852: $currentstring .=
4853: "\n% &Apache::lonxml::londefdef \n" .
4854: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4855: if (($env{'form.latex_type'}=~'batchmode') ||
4856: (!$env{'request.role.adv'}) ||
4857: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4858: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4859: '\renewcommand{\deg}{$^{\circ}$}'.
4860: '\usepackage{multirow}'.
4861: '\usepackage{longtable}'.
4862: '\usepackage{textcomp}'.
4863: '\usepackage{makeidx}'.
4864: '\usepackage[dvips]{graphicx}'.
4865: '\usepackage{wrapfig}'.
4866: '\usepackage{picins}'.
4867: '\usepackage[T1]{fontenc}'."\n".
4868: '\usepackage{lmodern}'."\n".
4869: '\usepackage[postscript]{ucs}'."\n".
4870: '\usepackage[utf8x]{inputenc}'."\n".
4871: '\usepackage{pifont}' ."\n".
4872: '\usepackage{latexsym}'."\n".
4873: '\usepackage{epsfig}'.
4874: "\\usepackage{xtab}\n".
4875: "\\usepackage{tabularx}\n".
4876: "\\usepackage{booktabs}\n".
4877: "\\usepackage{array}\n".
4878: "\\usepackage{colortbl}\n".
4879: "\\usepackage{xcolor}\n".
4880: '\usepackage{calc}'.
4881: '\usepackage{amsmath}'.
4882: '\usepackage{amssymb}'.
4883: '\usepackage{amsfonts}'.
4884: '\usepackage{amsthm}'.
4885: '\usepackage{amscd}'
4886: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4887: '\usepackage[T1]{fontenc}'."\n".
4888: '\usepackage{lmodern}'."\n".
4889: '\usepackage[postscript]{ucs}'."\n".
4890: '\usepackage[utf8x]{inputenc}'."\n".
4891: '\usepackage{pifont}' . "\n";
4892:
4893: if($env{'form.pdfFormFields'} eq 'yes') {
4894: $currentstring .= '\usepackage{hyperref}'.
4895: '\usepackage{eforms}'.
4896: '\usepackage{tabularx}';
4897: }
4898:
4899: $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}}'.
4900: '\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}}';
4901: $currentstring .= '\begin{document}';
4902:
4903: return $currentstring;
4904:
4905: }
4906:
4907: =pod
4908:
4909: =head1 NAME
4910:
4911: Apache::londefdef.pm
4912:
4913: =head1 SYNOPSIS
4914:
4915: Tags Default Definition Module
4916:
4917: This is part of the LearningOnline Network with CAPA project
4918: described at http://www.lon-capa.org.
4919:
4920:
4921: =head1 NOTABLE SUBROUTINES
4922:
4923: =over
4924:
4925: =item start_hideweboutput()
4926:
4927: =item end_hideweboutput()
4928:
4929: =item image_replication()
4930:
4931: =item resize_image()
4932:
4933: Get correct sizing parameter for an image given
4934: it's initial ht. and wid. This allows sizing of
4935: images that are generated on-the-fly (e.g. gnuplot)
4936: as well as serving as a utility for image_size.
4937:
4938: Parameter:
4939: height_param
4940: width_param - Initial picture dimensions.
4941: scaling - A scale factor.
4942: parstack, - the current stack of tag attributes
4943: from the xml parser
4944: safeeval, - pointer to the safespace
4945: depth, - from what level in the stack to look for attributes
4946: (assumes -1 if unspecified)
4947: cis - look for attrubutes case insensitively
4948: (assumes false)
4949:
4950: Returns:
4951: height, width - new dimensions.
4952:
4953: =item image_size()
4954:
4955: =item image_width()
4956:
4957: =item image_height()
4958:
4959: =item get_eps_image()
4960:
4961: =item eps_generation()
4962:
4963: =item file_path()
4964:
4965: =item recalc()
4966:
4967: Converts a measurement in to mm from any of
4968: the other valid LaTeX units of measure.
4969: If the units of measure are missing from the
4970: parameter, it is assumed to be in and returned
4971: with mm units of measure
4972:
4973: =item LATEX_length()
4974:
4975: =item align_latex_image()
4976:
4977: Wrap image 'stuff' inside of the LaTeX required to implement
4978: alignment:
4979: align_tex_image(align, latex_rendering, image)
4980: Where:
4981: align - The HTML alignment specification.
4982: latex_rendering - rendering hint for latex.
4983: image - The LaTeX needed to insert the image itsef.
4984: width,height - dimensions of the image.
4985: Returns:
4986: The 1/2 wrapped image and the stuff required to close the
4987: wrappage. This allows e.g. randomlabel to insert more stuff
4988: into the closure.
4989:
4990:
4991: =item is_inside_of($tagstack, $tag)
4992: This sub returns true if the current state of Xml processing is inside of the tag.
4993: Parameters:
4994: tagstack - The tagstack from the parser.
4995: tag - The tag (without the <>'s.).
4996: Sample usage:
4997: if (is_inside_of($tagstack "table")) {
4998: I'm in a table....
4999: }
5000:
5001:
5002:
5003: =back
5004:
5005: =cut
5006:
5007:
5008: 1;
5009: __END__
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