1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.427 2010/11/28 02:46:23 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 Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::lonlocal;
50: use Apache::loncommon();
51: use Apache::Constants qw(:common);
52: use File::Basename;
53: use LONCAPA();
54: # use Data::Dumper;
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62:
63: sub initialize_londefdef {
64: $Apache::londefdef::TD_redirection=0;
65: @Apache::londefdef::table = ();
66: $Apache::londefdef::select=0;
67: undef(@Apache::londefdef::description);
68: @Apache::londefdef::DD=(0);
69: @Apache::londefdef::DT=(0);
70: @Apache::londefdef::seenDT=(0);
71: $Apache::londefdef::list_index=0;
72: undef($Apache::londefdef::head);
73: undef($Apache::londefdef::title);
74: }
75:
76: #======================= TAG SUBROUTINES =====================
77: #-- <output>
78: sub start_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
81: return '';
82: }
83: sub end_output {
84: my ($target) = @_;
85: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
86: return '';
87: }
88: #-- <m> tag
89: sub start_m {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
91: my $currentstring = '';
92: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
93: if ($target eq 'web' || $target eq 'analyze') {
94: &Apache::lonxml::debug("M is starting with:$inside:");
95: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
96: if ($eval eq 'on') {
97: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
98: #&Apache::lonxml::debug("M is evaluated to:$inside:");
99: }
100: my $tex = $inside;
101: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
102: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
103: if ($Apache::lontexconvert::errorstring) {
104: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
105: $tex = &HTML::Entities::encode($tex,'<>&"');
106: my ($linenumber) =
107: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
108: if (defined($linenumber)) {
109: my @tex=split("\n",$tex);
110: $tex[$linenumber]='<b><font color="red">'.
111: $tex[$linenumber].'</font></b>';
112: $tex=join("\n",@tex);
113: }
114: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
115: $Apache::lontexconvert::errorstring='';
116: }
117: #&Apache::lonxml::debug("M is ends with:$currentstring:");
118: $Apache::lonxml::post_evaluate=0;
119: } elsif ($target eq 'tex') {
120:
121: $currentstring = $inside;
122: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
123: if ($eval eq 'on') {
124: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
125: }
126: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
127: # detect simple math mode entry exits, and convert them
128: # to use \ensuremath ... unless there's a \verb inside.
129: if (! ($currentstring=~/\\verb/)) {
130: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
131: $currentstring=~s/^(\s*)\$/$1/;
132: $currentstring=~s/\$(\s*)$/$1/;
133: $currentstring='\ensuremath{'.$currentstring.'}';
134: }
135: }
136: $Apache::lonxml::post_evaluate=0;
137: }
138: return $currentstring;
139: }
140:
141: sub end_m {
142: my ($target,$token) = @_;
143: my $currentstring = '';
144: if ($target eq 'tex') {
145: $currentstring = "";
146: }
147: return $currentstring;
148: }
149:
150: sub start_tthoption {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
152: my $result;
153: if ($target eq 'web' || $target eq 'webgrade') {
154: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
155: $style);
156: $inside=~s/^\s*//;
157: if ($env{'browser.mathml'}) {
158: &tth::ttmoptions($inside);
159: } else {
160: &tth::tthoptions($inside);
161: }
162: }
163: return $result;
164: }
165:
166: sub end_tthoption {
167: my ($target,$token) = @_;
168: my $result;
169: return $result;
170: }
171:
172: #-- <html> tag (end tag optional)
173: sub start_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
177: # start_body() takes care of emitting the <html>
178: } elsif ($target eq 'tex') {
179:
180: $currentstring .= &latex_header();
181: }
182: return $currentstring;
183: }
184:
185: sub end_html {
186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'webgrade') {
189: # end_body takes care of the </html>
190: }
191: return $currentstring;
192: }
193:
194: #-- <head> tag (end tag optional)
195: sub start_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' || $target eq 'webgrade') {
199: &Apache::lonxml::startredirection();
200: }
201: return $currentstring;
202: }
203:
204: sub end_head {
205: my ($target,$token) = @_;
206: my $currentstring = '';
207: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
208: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
209: # in case there is a </head> but no <head>
210: if ($Apache::lonxml::redirection) {
211: $Apache::londefdef::head = &Apache::lonxml::endredirection();
212: }
213: }
214: return $currentstring;
215: }
216:
217: #-- <map> tag (end tag required)
218: sub start_map {
219: my ($target,$token) = @_;
220: my $currentstring = '';
221: if ($target eq 'web' || $target eq 'webgrade') {
222: $currentstring = $token->[4];
223: }
224: return $currentstring;
225: }
226:
227: sub end_map {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web' || $target eq 'webgrade') {
231: $currentstring = $token->[2];
232: }
233: return $currentstring;
234: }
235:
236: #-- <select> tag (end tag required)
237: sub start_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web' || $target eq 'webgrade') {
241: $currentstring = $token->[4];
242: } elsif ($target eq 'tex') {
243: $Apache::londefdef::select=0;
244: }
245: return $currentstring;
246: }
247:
248: sub end_select {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if ($target eq 'web' || $target eq 'webgrade') {
252: $currentstring = $token->[2];
253: }
254: return $currentstring;
255: }
256:
257: #-- <option> tag (end tag optional)
258: sub start_option {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[4];
263: } elsif ($target eq 'tex') {
264: $Apache::londefdef::select++;
265: if ($Apache::londefdef::select == 1) {
266: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
267: } else {
268: $currentstring='\keephidden{';
269: }
270: }
271: return $currentstring;
272: }
273:
274: sub end_option {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: } elsif ($target eq 'tex') {
280: $currentstring='}';
281: }
282: return $currentstring;
283: }
284:
285: #-- <input> tag (end tag forbidden)
286: sub start_input {
287: my ($target,$token) = @_;
288: my $currentstring = '';
289: if ($target eq 'web' || $target eq 'webgrade') {
290: $currentstring = $token->[4];
291: }
292: return $currentstring;
293: }
294:
295: sub end_input {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web' || $target eq 'webgrade') {
299: $currentstring = $token->[2];
300: }
301: return $currentstring;
302: }
303:
304: #-- <textarea> tag (end tag required)
305: sub start_textarea {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[4];
310: }
311: return $currentstring;
312: }
313:
314: sub end_textarea {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web' || $target eq 'webgrade') {
318: $currentstring = $token->[2];
319: }
320: return $currentstring;
321: }
322:
323: #-- <form> tag (end tag required)
324: sub start_form {
325: my ($target,$token) = @_;
326: my $currentstring = '';
327: if ($target eq 'web' || $target eq 'webgrade') {
328: $currentstring = $token->[4];
329: }
330: return $currentstring;
331: }
332:
333: sub end_form {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web' || $target eq 'webgrade') {
337: $currentstring = $token->[2];
338: }
339: return $currentstring;
340: }
341:
342: #-- <title> tag (end tag required)
343: sub start_title {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
345: my $currentstring = '';
346: if ($target eq 'web' || $target eq 'webgrade') {
347: $Apache::londefdef::title =
348: &Apache::lonxml::get_all_text('/title',$parser,$style);
349: } elsif ($target eq 'tex') {
350: $currentstring .= '\keephidden{Title of the document: '
351: }
352: if ($target eq 'meta') {
353: $currentstring='<title>';
354: &start_output($target);
355: }
356: return $currentstring;
357: }
358:
359: sub end_title {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: # start_title takes care of swallowing the title
364: } elsif ($target eq 'tex') {
365: $currentstring .= '}';
366: }
367: if ($target eq 'meta') {
368: &end_output($target);
369: $currentstring='</title>';
370: }
371: return $currentstring;
372: }
373:
374: #-- <meta> tag (end tag forbidden)
375: sub start_meta {
376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
377: my $currentstring = '';
378: if ($target eq 'web' || $target eq 'webgrade') {
379: my $args='';
380: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
381: if ($args eq '') {
382: &Apache::lonxml::get_all_text("/meta",$parser,$style);
383: } else {
384: $currentstring = $token->[4];
385: }
386: } elsif ($target eq 'meta') {
387: unless (&Apache::lonxml::get_param
388: ('http-equiv',$parstack,$safeeval,undef,1)) {
389: my $name=$token->[2]->{'name'};
390: $name=~tr/A-Z/a-z/;
391: $name=~s/\s/\_/gs;
392: $name=~s/\W//gs;
393: if ($name) {
394: $currentstring='<'.$name;
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=~s/\"/\'/g;
399: $currentstring.=' display="'.$display.'"';
400: }
401: $currentstring.='>'.
402: &Apache::lonxml::get_param
403: ('content',$parstack,$safeeval,undef,1).
404: '</'.$name.'>';
405: }
406: my $display=&Apache::lonxml::get_param
407: ('display',$parstack,$safeeval,undef,1);
408: if ($display) {
409: $display=&HTML::Entities::encode($display,'<>&"');
410: $currentstring.='<'.$name.'.display>'.$display.
411: '</'.$name.'.display>';
412: }
413: }
414: } elsif ($target eq 'tex') {
415: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
416: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
417: if ((not defined $content) && (not defined $name)) {
418: &Apache::lonxml::startredirection();
419: }
420: } elsif ($target eq 'edit') {
421: $currentstring .= &Apache::edit::tag_start($target,$token);
422: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
423: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
424: $currentstring .= &Apache::edit::end_row();
425: } elsif ($target eq 'modified') {
426: my $constructtag =
427: &Apache::edit::get_new_args($token,$parstack,$safeeval,
428: 'name','content');
429: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
430: }
431: return $currentstring;
432: }
433:
434: sub end_meta {
435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
436: my $currentstring = '';
437: if ($target eq 'web' || $target eq 'webgrade') {
438: my $args='';
439: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
440: if ($args ne '') {
441: $currentstring = $token->[4];
442: }
443: } elsif ($target eq 'tex') {
444: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
445: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
446: if ((not defined $content) && (not defined $name)) {
447: &Apache::lonxml::endredirection();
448: }
449: }
450: return $currentstring;
451: }
452:
453: sub insert_meta {
454: return '
455: <meta />';
456: }
457:
458: # accessrule
459: sub start_accessrule {
460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
461: my $currentstring = '';
462: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
463: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
464: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
465: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
466:
467: my ($dom,$crs,$sec,$separator);
468: if ($type eq 'user') {
469: ($dom,$crs,$sec)=split(m{/},$realm);
470: $crs = &LONCAPA::clean_username($crs);
471: $separator = '/';
472: } else {
473: ($dom,$crs,$sec)=split(/\_/,$realm);
474: $crs = &LONCAPA::clean_courseid($crs);
475: $separator = '_';
476: }
477: $dom = &LONCAPA::clean_domain($dom);
478:
479: $sec =~s/\W//;
480: $realm = $dom;
481: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
482: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
483: $role=~s/\W//g;
484:
485: if ($target eq 'web') {
486: my $args='';
487: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
488: if ($args eq '') {
489: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
490: } else {
491: $currentstring = $token->[4];
492: }
493: }
494: if ($target eq 'meta') {
495: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
496: }
497: return $currentstring;
498: }
499:
500: sub end_accessrule {
501: my ($target,$token,$tagstack,$parstack,$parser) = @_;
502: my $currentstring = '';
503: if ($target eq 'web') {
504: my $args='';
505: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
506: if ($args ne '') {
507: $currentstring = $token->[4];
508: }
509: }
510: return $currentstring;
511: }
512:
513: sub generate_css_links {
514: my $links;
515: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
516: if ($css_href =~ /\S/) {
517: &Apache::lonxml::extlink($css_href);
518: $links .=
519: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
520: }
521: return $links;
522: }
523:
524: #-- <body> tag (end tag required)
525: sub start_body {
526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
527: my $currentstring = '';
528:
529: if ($target eq 'web' || $target eq 'webgrade') {
530: if ($Apache::lonhomework::parsing_a_problem) {
531: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
532: return '';
533: }
534:
535: if (&is_inside_of($tagstack, "head")) {
536: &end_head(@_);
537: }
538:
539: my $extra_head = &generate_css_links();
540:
541: # Breadcrumbs
542: &Apache::lonhtmlcommon::clear_breadcrumbs();
543: if ($env{'request.state'} eq 'construct') {
544: &Apache::lonhtmlcommon::add_breadcrumb({
545: 'text' => 'Construction Space',
546: 'href' => &Apache::loncommon::authorspace(),
547: });
548: &Apache::lonhtmlcommon::add_breadcrumb({
549: 'text' => 'HTML Editor',
550: 'href' => '',
551: });
552: # breadcrumbs (and tools) will be created
553: # in start_page->bodytag->innerregister
554: } else {
555: # FIXME Where are we?
556: }
557:
558: $currentstring =
559: &Apache::loncommon::start_page($Apache::londefdef::title,
560: $Apache::londefdef::head
561: .$extra_head,
562: {'add_entries' => $token->[2],
563: # 'no_title' => 1,
564: 'force_register' => 1});
565:
566: my $header = '';
567: if ($env{'request.state'} ne 'published' &&
568: $env{'request.state'} ne 'construct') {
569: $header=&Apache::lonmenu::constspaceform();
570: }
571: if ($env{'request.state'} ne 'published') {
572: $header.=&Apache::londefdef::edit_controls();
573: }
574: if ($env{'request.state'} eq 'construct') {
575: $currentstring.=&Apache::loncommon::head_subbox(
576: &Apache::loncommon::CSTR_pageheader()
577: .$header);
578: } elsif ($env{'request.state'} eq 'edit') {
579: $currentstring.=&Apache::loncommon::head_subbox($header);
580: }
581: $currentstring.=&Apache::lonxml::message_location();
582: } elsif ($target eq 'tex') {
583: $currentstring = ''; # '\begin{document}' is in header.
584: }
585:
586: return $currentstring;
587: }
588:
589: sub edit_controls {
590: my ($nochgview) = @_;
591: my $result .= '
592: <form method="post" action="">
593: <div class="LC_edit_problem_header">';
594: unless ($nochgview) {
595: $result .= '
596: <div class="LC_edit_problem_header_row1">'.
597: &Apache::lonxml::renderingoptions().'
598: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
599: </div>';
600: }
601: $result .= '
602: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
603: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
604: my $viewtext = &mt('Course View');
605: if (&Apache::loncommon::course_type() eq 'Community') {
606: $viewtext = &mt('Community View');
607: }
608: $result .= (' ' x 3).'<input type="button" value="'.
609: $viewtext.'" onclick="javascript:location.href=currentURL" />';
610: }
611: $result .= '</div>
612: </div>
613: </form>
614: ';
615: return $result;
616: }
617:
618: sub end_body {
619: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
620: my $currentstring = &end_p(); # Close off unclosed <p>
621: if ($target eq 'web' || $target eq 'webgrade') {
622: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
623: } elsif ($target eq 'tex') {
624: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
625: }
626: return $currentstring;
627: }
628:
629: # \begin{center} causes a new paragprah spacing that looks odd inside
630: # of a table cell. Same at the end of a \center but with a slightly
631: # larger space .. hence center_correction and center_end_correction.
632: #
633: sub center_correction { return '\vspace*{-6 mm}'; }
634: sub center_end_correction { return '\vspace*{-7 mm}'; }
635:
636: #-- <center> tag (end tag required)
637: sub start_center {
638: my ($target,$token,$tagstack) = @_;
639: my $currentstring = &end_p(); # Close off any prior para.
640: if ($target eq 'web' || $target eq 'webgrade') {
641: $currentstring .= $token->[4];
642: } elsif ($target eq 'tex') {
643: if (&is_inside_of($tagstack, "table")) {
644: $currentstring .= ¢er_correction();
645: }
646: $currentstring .= '\begin{center}';
647: }
648: return $currentstring;
649: }
650:
651: sub end_center {
652: my ($target,$token,$tagstack) = @_;
653: my $currentstring = '';
654: if ($target eq 'web' || $target eq 'webgrade') {
655: $currentstring = $token->[2];
656: } elsif ($target eq 'tex') {
657: $currentstring = '\end{center}';
658: if (&is_inside_of($tagstack, "table")) {
659: $currentstring .= ¢er_end_correction();
660: }
661: }
662: return $currentstring;
663: }
664:
665: #-- <b> tag (end tag required)
666: # NOTE: In TeX mode disables internal <p>
667: sub start_b {
668: my ($target,$token) = @_;
669: my $currentstring = '';
670: if ($target eq 'web' || $target eq 'webgrade') {
671: $currentstring = $token->[4];
672: } elsif ($target eq 'tex') {
673: &disable_para();
674: $currentstring .= '\textbf{';
675: }
676: return $currentstring;
677: }
678:
679: sub end_b {
680: my ($target,$token) = @_;
681: my $currentstring = '';
682: if ($target eq 'web' || $target eq 'webgrade') {
683: $currentstring = $token->[2];
684: } elsif ($target eq 'tex') {
685: &enable_para();
686: $currentstring = '}';
687: }
688: return $currentstring;
689: }
690:
691: #-- <strong> tag (end tag required)
692: # NOTE: in TeX mode disables internal <p>
693: sub start_strong {
694: my ($target,$token) = @_;
695: my $currentstring = '';
696: if ($target eq 'web' || $target eq 'webgrade') {
697: $currentstring = $token->[4];
698: } elsif ($target eq 'tex') {
699: &disable_para();
700: $currentstring = '\textbf{';
701: }
702: return $currentstring;
703: }
704:
705: sub end_strong {
706: my ($target,$token) = @_;
707: my $currentstring = '';
708: if ($target eq 'web' || $target eq 'webgrade') {
709: $currentstring = $token->[2];
710: } elsif ($target eq 'tex') {
711: &enable_para();
712: $currentstring = '}';
713: }
714: return $currentstring;
715: }
716:
717: #-- <h1> tag (end tag required)
718: sub start_h1 {
719: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
720: my $currentstring = &end_p(); # Close off any prior para.
721: if ($target eq 'web' || $target eq 'webgrade') {
722: $currentstring .= $token->[4];
723: } elsif ($target eq 'tex') {
724: my $pre;
725: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
726: if ($align eq 'center') {
727: $pre='\begin{center}';
728: } elsif ($align eq 'left') {
729: $pre='\rlap{';
730: } elsif ($align eq 'right') {
731: $pre=' \hfill \llap{';
732: }
733: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
734: if (not defined $TeXsize) {$TeXsize="large";}
735: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
736: } elsif ($target eq 'meta') {
737: $currentstring.='<subject>';
738: &start_output($target);
739: }
740: return $currentstring;
741: }
742:
743: sub end_h1 {
744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
745: my $currentstring = '';
746: if ($target eq 'web' || $target eq 'webgrade') {
747: $currentstring .= $token->[2];
748: } elsif ($target eq 'tex') {
749: my $post='\vskip 0 mm ';
750: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
751: if ($align eq 'center') {
752: $post='\end{center}';
753: } elsif ($align eq 'left') {
754: $post='} \hfill'.'\vskip 0 mm ';
755: } elsif ($align eq 'right') {
756: $post='}'.'\vskip 0 mm ';
757: }
758: $currentstring .= '}}'.$post;
759: } elsif ($target eq 'meta') {
760: &end_output($target);
761: $currentstring='</subject>';
762: }
763: return $currentstring;
764: }
765:
766: #-- <h2> tag
767: sub start_h2 {
768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
769: my $currentstring = &end_p(); # Close off any prior para.
770: if ($target eq 'web' || $target eq 'webgrade') {
771: $currentstring .= $token->[4];
772: } elsif ($target eq 'tex') {
773: my $pre;
774: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
775: if ($align eq 'center') {
776: $pre='\begin{center}';
777: } elsif ($align eq 'left') {
778: $pre='\rlap{';
779: } elsif ($align eq 'right') {
780: $pre=' \hfill \llap{';
781: }
782: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
783: if (not defined $TeXsize) {$TeXsize="large";}
784: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
785: }
786: return $currentstring;
787: }
788:
789: sub end_h2 {
790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
791: my $currentstring = '';
792: if ($target eq 'web' || $target eq 'webgrade') {
793: $currentstring .= $token->[2];
794: } elsif ($target eq 'tex') {
795: my $post='\vskip 0 mm ';
796: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
797: if ($align eq 'center') {
798: $post='\end{center}';
799: } elsif ($align eq 'left') {
800: $post='} \hfill'.'\vskip 0 mm ';
801: } elsif ($align eq 'right') {
802: $post='}'.'\vskip 0 mm ';
803: }
804: $currentstring .= '}}'.$post;
805: }
806: return $currentstring;
807: }
808:
809: #-- <h3> tag
810: sub start_h3 {
811: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
812: my $currentstring = &end_p(); # Close off any prior para.
813: if ($target eq 'web' || $target eq 'webgrade') {
814: $currentstring .= $token->[4];
815: } elsif ($target eq 'tex') {
816: my $pre;
817: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
818: if ($align eq 'center') {
819: $pre='\begin{center}';
820: } elsif ($align eq 'left') {
821: $pre='\rlap{';
822: } elsif ($align eq 'right') {
823: $pre=' \hfill \llap{';
824: }
825: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
826: if (not defined $TeXsize) {$TeXsize="large";}
827: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
828: }
829: return $currentstring;
830: }
831:
832: sub end_h3 {
833: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
834: my $currentstring = '';
835: if ($target eq 'web' || $target eq 'webgrade') {
836: $currentstring .= $token->[2];
837: } elsif ($target eq 'tex') {
838: my $post='\vskip 0 mm ';
839: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
840: if ($align eq 'center') {
841: $post='\end{center}';
842: } elsif ($align eq 'left') {
843: $post='} \hfill'.'\vskip 0 mm ';
844: } elsif ($align eq 'right') {
845: $post='}'.'\vskip 0 mm ';
846: }
847: $currentstring .= '}}'.$post;
848: }
849: return $currentstring;
850: }
851:
852: #-- <h4> tag
853: sub start_h4 {
854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
855: my $currentstring = &end_p(); # Close off any prior para.
856: if ($target eq 'web' || $target eq 'webgrade') {
857: $currentstring .= $token->[4];
858: } elsif ($target eq 'tex') {
859: my $pre;
860: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
861: if ($align eq 'center') {
862: $pre='\begin{center}';
863: } elsif ($align eq 'left') {
864: $pre='\rlap{';
865: } elsif ($align eq 'right') {
866: $pre=' \hfill \llap{';
867: }
868: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
869: if (not defined $TeXsize) {$TeXsize="large";}
870: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
871: }
872: return $currentstring;
873: }
874:
875: sub end_h4 {
876: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
877: my $currentstring = '';
878: if ($target eq 'web' || $target eq 'webgrade') {
879: $currentstring .= $token->[2];
880: } elsif ($target eq 'tex') {
881: my $post='\vskip 0 mm ';
882: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
883: if ($align eq 'center') {
884: $post='\end{center}';
885: } elsif ($align eq 'left') {
886: $post='} \hfill'.'\vskip 0 mm ';
887: } elsif ($align eq 'right') {
888: $post='}'.'\vskip 0 mm ';
889: }
890: $currentstring .= '}}'.$post;
891: }
892: return $currentstring;
893: }
894:
895: #-- <h5> tag
896: sub start_h5 {
897: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
898: my $currentstring = &end_p(); # Close off any prior paras.
899: if ($target eq 'web' || $target eq 'webgrade') {
900: $currentstring .= $token->[4];
901: } elsif ($target eq 'tex') {
902: my $pre;
903: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
904: if ($align eq 'center') {
905: $pre='\begin{center}';
906: } elsif ($align eq 'left') {
907: $pre='\rlap{';
908: } elsif ($align eq 'right') {
909: $pre=' \hfill \llap{';
910: }
911: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
912: if (not defined $TeXsize) {$TeXsize="large";}
913: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
914: }
915: return $currentstring;
916: }
917:
918: sub end_h5 {
919: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
920: my $currentstring = '';
921: if ($target eq 'web' || $target eq 'webgrade') {
922: $currentstring .= $token->[2];
923: } elsif ($target eq 'tex') {
924: my $post='\vskip 0 mm ';
925: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
926: if ($align eq 'center') {
927: $post='\end{center}';
928: } elsif ($align eq 'left') {
929: $post='} \hfill'.'\vskip 0 mm ';
930: } elsif ($align eq 'right') {
931: $post='}'.'\vskip 0 mm ';
932: }
933: $currentstring .= '}}'.$post;
934: }
935: return $currentstring;
936: }
937:
938: #-- <h6> tag
939: sub start_h6 {
940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
941: my $currentstring = &end_p(); # Close off any prior paras.
942: if ($target eq 'web' || $target eq 'webgrade') {
943: $currentstring .= $token->[4];
944: } elsif ($target eq 'tex') {
945: my $pre;
946: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
947: if ($align eq 'center') {
948: $pre='\begin{center}';
949: } elsif ($align eq 'left') {
950: $pre='\rlap{';
951: } elsif ($align eq 'right') {
952: $pre=' \hfill \llap{';
953: }
954: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
955: if (not defined $TeXsize) {$TeXsize="large";}
956: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
957: }
958: return $currentstring;
959: }
960:
961: sub end_h6 {
962: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
963: my $currentstring = '';
964: if ($target eq 'web' || $target eq 'webgrade') {
965: $currentstring .= $token->[2];
966: } elsif ($target eq 'tex') {
967: my $post='\vskip 0 mm ';
968: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
969: if ($align eq 'center') {
970: $post='\end{center}';
971: } elsif ($align eq 'left') {
972: $post='} \hfill'.'\vskip 0 mm ';
973: } elsif ($align eq 'right') {
974: $post='}'.'\vskip 0 mm ';
975: }
976: $currentstring .= '}}'.$post;
977: }
978: return $currentstring;
979: }
980:
981: #--- <cite> tag (end tag required)
982: sub start_cite {
983: my ($target,$token) = @_;
984: my $currentstring = '';
985: if ($target eq 'web' || $target eq 'webgrade') {
986: $currentstring .= $token->[4];
987: } elsif ($target eq 'tex') {
988: $currentstring .= '\textit{';
989: }
990: return $currentstring;
991: }
992:
993: sub end_cite {
994: my ($target,$token) = @_;
995: my $currentstring = '';
996: if ($target eq 'web' || $target eq 'webgrade') {
997: $currentstring .= $token->[2];
998: } elsif ($target eq 'tex') {
999: $currentstring .= '}';
1000: }
1001: return $currentstring;
1002: }
1003:
1004: #-- <i> tag (end tag required)
1005: sub start_i {
1006: my ($target,$token) = @_;
1007: my $currentstring = '';
1008: if ($target eq 'web' || $target eq 'webgrade') {
1009: $currentstring .= $token->[4];
1010: } elsif ($target eq 'tex') {
1011: $currentstring .= '\textit{';
1012: }
1013: return $currentstring;
1014: }
1015:
1016: sub end_i {
1017: my ($target,$token) = @_;
1018: my $currentstring = '';
1019: if ($target eq 'web' || $target eq 'webgrade') {
1020: $currentstring .= $token->[2];
1021: } elsif ($target eq 'tex') {
1022: $currentstring .= '}';
1023: }
1024: return $currentstring;
1025: }
1026:
1027: #-- <address> tag (end tag required)
1028: sub start_address {
1029: my ($target,$token) = @_;
1030: my $currentstring = '';
1031: if ($target eq 'web' || $target eq 'webgrade') {
1032: $currentstring .= $token->[4];
1033: } elsif ($target eq 'tex') {
1034: $currentstring .= '\textit{';
1035: }
1036: return $currentstring;
1037: }
1038:
1039: sub end_address {
1040: my ($target,$token) = @_;
1041: my $currentstring = '';
1042: if ($target eq 'web' || $target eq 'webgrade') {
1043: $currentstring .= $token->[2];
1044: } elsif ($target eq 'tex') {
1045: $currentstring .= '}';
1046: }
1047: return $currentstring;
1048: }
1049:
1050: #-- <dfn> tag (end tag required)
1051: sub start_dfn {
1052: my ($target,$token) = @_;
1053: my $currentstring = '';
1054: if ($target eq 'web' || $target eq 'webgrade') {
1055: $currentstring .= $token->[4];
1056: } elsif ($target eq 'tex') {
1057: $currentstring .= '\textit{';
1058: }
1059: return $currentstring;
1060: }
1061:
1062: sub end_dfn {
1063: my ($target,$token) = @_;
1064: my $currentstring = '';
1065: if ($target eq 'web' || $target eq 'webgrade') {
1066: $currentstring .= $token->[2];
1067: } elsif ($target eq 'tex') {
1068: $currentstring .= '}';
1069: }
1070: return $currentstring;
1071: }
1072:
1073: #-- <tt> tag (end tag required)
1074: sub start_tt {
1075: my ($target,$token) = @_;
1076: my $currentstring = '';
1077: if ($target eq 'web' || $target eq 'webgrade') {
1078: $currentstring .= $token->[4];
1079: } elsif ($target eq 'tex') {
1080: $currentstring .= '\texttt{';
1081: }
1082: return $currentstring;
1083: }
1084:
1085: sub end_tt {
1086: my ($target,$token) = @_;
1087: my $currentstring = '';
1088: if ($target eq 'web' || $target eq 'webgrade') {
1089: $currentstring .= $token->[2];
1090: } elsif ($target eq 'tex') {
1091: $currentstring .= '}';
1092: }
1093: return $currentstring;
1094: }
1095:
1096: #-- <kbd> tag (end tag required)
1097: sub start_kbd {
1098: my ($target,$token) = @_;
1099: my $currentstring = '';
1100: if ($target eq 'web' || $target eq 'webgrade') {
1101: $currentstring .= $token->[4];
1102: } elsif ($target eq 'tex') {
1103: $currentstring .= '\texttt{';
1104: }
1105: return $currentstring;
1106: }
1107:
1108: sub end_kbd {
1109: my ($target,$token) = @_;
1110: my $currentstring = '';
1111: if ($target eq 'web' || $target eq 'webgrade') {
1112: $currentstring .= $token->[2];
1113: } elsif ($target eq 'tex') {
1114: $currentstring .= '}';
1115: }
1116: return $currentstring;
1117: }
1118:
1119: #-- <code> tag (end tag required)
1120: sub start_code {
1121: my ($target,$token) = @_;
1122: my $currentstring = '';
1123: if ($target eq 'web' || $target eq 'webgrade') {
1124: $currentstring .= $token->[4];
1125: } elsif ($target eq 'tex') {
1126: $currentstring .= '\texttt{';
1127: }
1128: return $currentstring;
1129: }
1130:
1131: sub end_code {
1132: my ($target,$token) = @_;
1133: my $currentstring = '';
1134: if ($target eq 'web' || $target eq 'webgrade') {
1135: $currentstring .= $token->[2];
1136: } elsif ($target eq 'tex') {
1137: $currentstring .= '}';
1138: }
1139: return $currentstring;
1140: }
1141:
1142: #-- <em> tag (end tag required)
1143: sub start_em {
1144: my ($target,$token) = @_;
1145: my $currentstring = '';
1146: if ($target eq 'web' || $target eq 'webgrade') {
1147: $currentstring .= $token->[4];
1148: } elsif ($target eq 'tex') {
1149: $currentstring .= '\emph{';
1150: }
1151: return $currentstring;
1152: }
1153:
1154: sub end_em {
1155: my ($target,$token) = @_;
1156: my $currentstring = '';
1157: if ($target eq 'web' || $target eq 'webgrade') {
1158: $currentstring .= $token->[2];
1159: } elsif ($target eq 'tex') {
1160: $currentstring .= '}';
1161: }
1162: return $currentstring;
1163: }
1164:
1165: #-- <q> tag (end tag required)
1166: sub start_q {
1167: my ($target,$token) = @_;
1168: my $currentstring = '';
1169: if ($target eq 'web' || $target eq 'webgrade') {
1170: $currentstring .= $token->[4];
1171: } elsif ($target eq 'tex') {
1172: $currentstring .= '\emph{';
1173: }
1174: return $currentstring;
1175: }
1176:
1177: sub end_q {
1178: my ($target,$token) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web' || $target eq 'webgrade') {
1181: $currentstring .= $token->[2];
1182: } elsif ($target eq 'tex') {
1183: $currentstring .= '}';
1184: }
1185: return $currentstring;
1186: }
1187:
1188: # <p> is a bit strange since it does not require a closing </p>
1189: # However in latex, we must often output closing stuff to end
1190: # environments and {}'s etc. Therefore we do all the work
1191: # of figuring out the ending strings in the start tag processing,
1192: # and provide a mechanism to output the stop text external
1193: # to tag processing.
1194: #
1195: {
1196:
1197: my $closing_string = ''; # String required to close <p>
1198:
1199: # Some tags are <p> fragile meaning that <p> inside of them
1200: # does not work within TeX mode. This is managed via the
1201: # counter below:
1202: #
1203:
1204: my $para_disabled = 0;
1205:
1206: sub disable_para {
1207: $para_disabled++;
1208: }
1209: sub enable_para {
1210: $para_disabled--;
1211: }
1212:
1213:
1214: #-- <p> tag (end tag optional)
1215: #optional attribute - align="center|left|right"
1216: sub start_p {
1217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1218: my $currentstring = '';
1219: if ($target eq 'web' || $target eq 'webgrade') {
1220: $currentstring .= &end_p(); # close off prior para if in progress.
1221: $currentstring .= $token->[4];
1222: if (! ($currentstring =~ /\//)) {
1223: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1224: }
1225: } elsif ($target eq 'tex' && !$para_disabled) {
1226:
1227: $currentstring .= &end_p(); # close off prior para if in progress.
1228: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1229: if ($align eq 'center') {
1230: $currentstring .='\begin{center}\par ';
1231: $closing_string = '\end{center}';
1232: if (&is_inside_of($tagstack, "table")) {
1233: $currentstring = ¢er_correction().$currentstring;
1234: }
1235: } elsif ($align eq 'right') {
1236: $currentstring.="\n".'{\flushright ';
1237: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1238: $closing_string= "}\n";
1239: } elsif ($align eq 'left') {
1240: $currentstring.= "\n".'{\flushleft ';
1241: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1242: $closing_string = "}\n";
1243: } else {
1244: $currentstring.='\par ';
1245: if (&is_inside_of($tagstack, 'table')) {
1246: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1247: } else {
1248: $closing_string = '\strut\\\\\strut ';
1249: }
1250: }
1251:
1252: }
1253: return $currentstring;
1254: }
1255: #
1256: # End paragraph processing just requires that we output the
1257: # closing string that was saved and blank it.
1258: sub end_p {
1259: # Note only 'tex' mode uses disable_para and enable_para
1260: # so we don't need to know the target in the check below:
1261:
1262: if (!$para_disabled) {
1263: my $current_string = $closing_string;
1264: $closing_string = ''; # Not in a para anymore.
1265: return $current_string;
1266: } else {
1267: return '';
1268: }
1269:
1270: }
1271: }
1272: #-- <br> tag (end tag forbidden)
1273: sub start_br {
1274: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1275: my $currentstring = '';
1276: if ($target eq 'web' || $target eq 'webgrade') {
1277: $currentstring .= $token->[4];
1278: } elsif ($target eq 'tex') {
1279: my @tempo=@$tagstack;
1280: my $signal=0;
1281: # Not going to factor this to is_inside_of since that would require
1282: # multiple stack traversals.
1283: #
1284: for (my $i=$#tempo;$i>=0;$i--) {
1285: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1286: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1287: $signal=1;
1288: }
1289: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1290: $signal = 1;
1291: }
1292: }
1293: if ($signal != 1) {
1294: $currentstring .= '\strut \\\\ \strut ';
1295: }
1296:
1297: }
1298: return $currentstring;
1299: }
1300:
1301: sub end_br {
1302: my ($target,$token) = @_;
1303: my $currentstring = '';
1304: if ($target eq 'web' || $target eq 'webgrade') {
1305: $currentstring .= $token->[2];
1306: }
1307: return $currentstring;
1308: }
1309:
1310: #-- <big> tag (end tag required)
1311: sub start_big {
1312: my ($target,$token) = @_;
1313: my $currentstring = '';
1314: if ($target eq 'web' || $target eq 'webgrade') {
1315: $currentstring .= $token->[4];
1316: } elsif ($target eq 'tex') {
1317: $currentstring .= '{\large ';
1318: }
1319: return $currentstring;
1320: }
1321:
1322: sub end_big {
1323: my ($target,$token) = @_;
1324: my $currentstring = '';
1325: if ($target eq 'web' || $target eq 'webgrade') {
1326: $currentstring .= $token->[2];
1327: } elsif ($target eq 'tex') {
1328: $currentstring .= '}';
1329: }
1330: return $currentstring;
1331: }
1332:
1333: #-- <small> tag (end tag required)
1334: sub start_small {
1335: my ($target,$token) = @_;
1336: my $currentstring = '';
1337: if ($target eq 'web' || $target eq 'webgrade') {
1338: $currentstring .= $token->[4];
1339: } elsif ($target eq 'tex') {
1340: $currentstring .= '{\footnotesize ';
1341: }
1342: return $currentstring;
1343: }
1344:
1345: sub end_small {
1346: my ($target,$token) = @_;
1347: my $currentstring = '';
1348: if ($target eq 'web' || $target eq 'webgrade') {
1349: $currentstring .= $token->[2];
1350: } elsif ($target eq 'tex') {
1351: $currentstring .= '}';
1352: }
1353: return $currentstring;
1354: }
1355:
1356: #-- <basefont> tag (end tag forbidden)
1357: sub start_basefont {
1358: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1359: my $currentstring = '';
1360: if ($target eq 'web' || $target eq 'webgrade') {
1361: $currentstring = $token->[4];
1362: } elsif ($target eq 'tex') {
1363: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1364: if (defined $basesize) {
1365: $currentstring = '{\\'.$basesize.' ';
1366: }
1367: }
1368: return $currentstring;
1369: }
1370:
1371: sub end_basefont {
1372: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web' || $target eq 'webgrade') {
1375: $currentstring = $token->[4];
1376: } elsif ($target eq 'tex') {
1377: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1378: if (defined $basesize) {
1379: $currentstring = '}';
1380: }
1381: }
1382: return $currentstring;
1383: }
1384:
1385: #-- <font> tag (end tag required)
1386: sub start_font {
1387: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1388: my $currentstring = '';
1389: if ($target eq 'web' || $target eq 'webgrade') {
1390: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1391: $currentstring = $token->[4];
1392: } elsif ($target eq 'tex') {
1393: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1394: if (defined $fontsize) {
1395: $currentstring = '{\\'.$fontsize.' ';
1396: }
1397: }
1398: return $currentstring;
1399: }
1400:
1401: sub end_font {
1402: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1403: my $currentstring = '';
1404: if ($target eq 'web' || $target eq 'webgrade') {
1405: $currentstring = $token->[2];
1406: } elsif ($target eq 'tex') {
1407: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1408: if (defined $fontsize) {
1409: $currentstring = '}';
1410: }
1411: }
1412: return $currentstring;
1413: }
1414:
1415: #-- <strike> tag (end tag required)
1416: sub start_strike {
1417: my ($target,$token) = @_;
1418: my $currentstring = '';
1419: if ($target eq 'web' || $target eq 'webgrade') {
1420: $currentstring .= $token->[4];
1421: } elsif ($target eq 'tex') {
1422: &Apache::lonxml::startredirection();
1423: }
1424: return $currentstring;
1425: }
1426:
1427: sub end_strike {
1428: my ($target,$token) = @_;
1429: my $currentstring = '';
1430: if ($target eq 'web' || $target eq 'webgrade') {
1431: $currentstring .= $token->[2];
1432: } elsif ($target eq 'tex') {
1433: $currentstring=&Apache::lonxml::endredirection();
1434: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1435: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1436: $currentstring=~s/(\S)\s*$/$1\}/;
1437: }
1438: return $currentstring;
1439: }
1440:
1441: #-- <s> tag (end tag required)
1442: sub start_s {
1443: my ($target,$token) = @_;
1444: my $currentstring = '';
1445: if ($target eq 'web' || $target eq 'webgrade') {
1446: $currentstring .= $token->[4];
1447: } elsif ($target eq 'tex') {
1448: &Apache::lonxml::startredirection();
1449: }
1450: return $currentstring;
1451: }
1452:
1453: sub end_s {
1454: my ($target,$token) = @_;
1455: my $currentstring = '';
1456: if ($target eq 'web' || $target eq 'webgrade') {
1457: $currentstring .= $token->[2];
1458: } elsif ($target eq 'tex') {
1459: $currentstring=&Apache::lonxml::endredirection();
1460: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1461: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1462: $currentstring=~s/(\S)\s*$/$1\}/;
1463: }
1464: return $currentstring;
1465: }
1466:
1467: #-- <sub> tag (end tag required)
1468: sub start_sub {
1469: my ($target,$token) = @_;
1470: my $currentstring = '';
1471: if ($target eq 'web' || $target eq 'webgrade') {
1472: $currentstring .= $token->[4];
1473: } elsif ($target eq 'tex') {
1474: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1475: }
1476: return $currentstring;
1477: }
1478:
1479: sub end_sub {
1480: my ($target,$token) = @_;
1481: my $currentstring = '';
1482: if ($target eq 'web' || $target eq 'webgrade') {
1483: $currentstring .= $token->[2];
1484: } elsif ($target eq 'tex') {
1485: $currentstring .= '}}';
1486: }
1487: return $currentstring;
1488: }
1489:
1490: #-- <sup> tag (end tag required)
1491: sub start_sup {
1492: my ($target,$token) = @_;
1493: my $currentstring = '';
1494: if ($target eq 'web' || $target eq 'webgrade') {
1495: $currentstring .= $token->[4];
1496: } elsif ($target eq 'tex') {
1497: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1498: }
1499: return $currentstring;
1500: }
1501:
1502: sub end_sup {
1503: my ($target,$token) = @_;
1504: my $currentstring = '';
1505: if ($target eq 'web' || $target eq 'webgrade') {
1506: $currentstring .= $token->[2];
1507: } elsif ($target eq 'tex') {
1508: $currentstring .= '}}';
1509: }
1510: return $currentstring;
1511: }
1512:
1513: #-- <hr> tag (end tag forbidden)
1514: sub start_hr {
1515: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1516: my $currentstring = &end_p(); # End enclosing para.
1517: if ($target eq 'web' || $target eq 'webgrade') {
1518: $currentstring .= $token->[4];
1519: } elsif ($target eq 'tex') {
1520:
1521: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1522: #
1523: my $restart_sub = 0;
1524: my $restart_sup = 0;
1525:
1526: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1527: # using the start_ stop_ functions.. those tags only care about
1528: # $target.
1529:
1530: if (&is_inside_of($tagstack, "sub")) {
1531: $restart_sub = 1;
1532: $currentstring .= &end_sub($target, $token, $tagstack,
1533: $parstack, $parser, $safeeval);
1534: }
1535: if (&is_inside_of($tagstack, "sup")) {
1536: $restart_sup = 1;
1537: $currentstring .= &end_sup($target, $token, $tagstack,
1538: $parstack, $parser, $safeeval);
1539: }
1540:
1541: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1542: if (defined $LaTeXwidth) {
1543: if ($LaTeXwidth=~/^%/) {
1544: substr($LaTeXwidth,0,1)='';
1545: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1546: }
1547: } else {
1548: $LaTeXwidth ='0.9\textwidth';
1549: }
1550: my ($pre,$post);
1551: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1552: if (($align eq 'center') || (not defined $align)) {
1553: $pre=''; $post='';
1554: } elsif ($align eq 'left') {
1555: $pre='\rlap{'; $post='} \hfill';
1556: } elsif ($align eq 'right') {
1557: $pre=' \hfill \llap{'; $post='}';
1558: }
1559: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1560: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1561: # Turn stuff back on that we can't be inside of.
1562:
1563: if ($restart_sub) {
1564: $currentstring .= &start_sub($target, $token, $tagstack,
1565: $parstack, $parser, $safeeval);
1566: }
1567: if ($restart_sup) {
1568: $currentstring .= &start_sup($target, $token, $tagstack,
1569: $parstack, $parser, $safeeval);
1570: }
1571: }
1572: return $currentstring;
1573: }
1574:
1575: sub end_hr {
1576: my ($target,$token) = @_;
1577: my $currentstring = '';
1578: if ($target eq 'web' || $target eq 'webgrade') {
1579: $currentstring .= $token->[2];
1580: }
1581: return $currentstring;
1582: }
1583:
1584: #-- <div> tag (end tag required)
1585: {
1586:
1587: # Since div can be nested, the stack below is used
1588: # in 'tex' mode to store the ending strings
1589: # for the div stack.
1590:
1591: my @div_end_stack;
1592:
1593: sub start_div {
1594: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1595: my $currentstring = &end_p(); # Close enclosing para.
1596: if ($target eq 'web' || $target eq 'webgrade') {
1597: $currentstring .= $token->[4];
1598: }
1599: if ($target eq 'tex') {
1600: # 4 possible alignments: left, right, center, and -missing-.
1601: # If inside a table row, we must let the table logic
1602: # do the alignment, however.
1603: #
1604:
1605: my $endstring = '';
1606:
1607: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1608: $safeeval, undef, 1));
1609: if ($align eq 'center') {
1610: $currentstring .= '\begin{center}';
1611: $endstring = '\end{center}';
1612: if (&is_inside_of($tagstack, "table")) {
1613: $currentstring = ¢er_correction().$currentstring;
1614: $endstring .= ¢er_end_correction();
1615: }
1616: }
1617: elsif ($align eq 'right') {
1618: $currentstring .= '\begin{flushright}';
1619: $endstring .= '\end{flushright}';
1620: } elsif ($align eq 'left') {
1621: $currentstring .= '\begin{flushleft}';
1622: $endstring = '\end{flushleft}';
1623: } else {
1624:
1625: }
1626: $currentstring .= "\n"; # For human readability.
1627: $endstring = "\n$endstring\n"; # For human readability
1628: push(@div_end_stack, $endstring);
1629: }
1630: return $currentstring;
1631: }
1632:
1633: sub end_div {
1634: my ($target,$token) = @_;
1635: my $currentstring = '';
1636: if ($target eq 'web' || $target eq 'webgrade') {
1637: $currentstring .= $token->[2];
1638: }
1639: if ($target eq 'tex') {
1640: my $endstring = pop @div_end_stack;
1641: $currentstring .= $endstring;
1642: }
1643: return $currentstring;
1644: }
1645: }
1646:
1647: #-- <a> tag (end tag required)
1648: sub start_a {
1649: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1650: my $currentstring = '';
1651: if ($target eq 'web' || $target eq 'webgrade') {
1652: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1653: undef,1);
1654: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1655: if ($href =~ /\S/) {
1656: if ($href !~ m{^https?://}) {
1657: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1658: my $linkurl;
1659: if ($href =~ m{^/uploaded/}) {
1660: $linkurl = $href;
1661: } elsif ($href =~ m{^[^/]}) {
1662: my $path = $url;
1663: $path =~ s{[^/]*$}{};
1664: $linkurl = $path.$href;
1665: }
1666: if ($linkurl =~ m{^/uploaded/}) {
1667: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1668: if (&Apache::lonnet::is_on_map($url)) {
1669: &Apache::lonxml::extlink($linkurl);
1670: }
1671: }
1672: }
1673: }
1674: }
1675: }
1676: return $currentstring;
1677: }
1678:
1679: sub end_a {
1680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1681: my $currentstring = '';
1682: if ($target eq 'web' || $target eq 'webgrade') {
1683: $currentstring .= $token->[2];
1684: }
1685: if ($target eq 'tex') {
1686: my $href =
1687: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1688: my $name =
1689: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1690: my $uriprint =
1691: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1692: my $anchorprint =
1693: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1694: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1695: $href =~ s/([^\\])%/$1\\\%/g;
1696: # Substitute special symbols... and allow line breaks at each /
1697: #
1698: $href = &Apache::lonxml::latex_special_symbols($href);
1699: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1700: $currentstring .= ' ({\tt URI:'.$href.'})';
1701: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1702: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1703: } else {
1704: $currentstring.='';
1705: }
1706: }
1707: return $currentstring;
1708: }
1709:
1710: #-- <li> tag (end tag optional)
1711: sub start_li {
1712: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1713: my $currentstring = '';
1714: if ($target eq 'web' || $target eq 'webgrade') {
1715: $currentstring = $token->[4];
1716: } elsif ($target eq 'tex') {
1717: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1718: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1719: #FIXME need to support types i and I
1720: if ($type=~/disc/) {
1721: $currentstring .= ' \item[$\bullet$] ';
1722: } elsif ($type=~/circle/) {
1723: $currentstring .= ' \item[$\circ$] ';
1724: } elsif ($type=~/square/) {
1725: $currentstring .= ' \item[$\diamond$] ';
1726: } elsif ($type eq '1') {
1727: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1728: } elsif ($type eq 'A') {
1729: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1730: } elsif ($type eq 'a') {
1731: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1732: } elsif ($value ne '') {
1733: $currentstring .= ' \item['.$value.'] ';
1734: } else {
1735: $currentstring .= ' \item ';
1736: }
1737: $Apache::londefdef::list_index++;
1738: }
1739: return $currentstring;
1740: }
1741:
1742: sub end_li {
1743: my ($target,$token) = @_;
1744: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1745: if ($target eq 'web' || $target eq 'webgrade') {
1746: $currentstring .= $token->[2];
1747: }
1748: return $currentstring;
1749: }
1750:
1751: #-- <u> tag (end tag required)
1752: sub start_u {
1753: my ($target,$token) = @_;
1754: my $currentstring = '';
1755: if ($target eq 'web' || $target eq 'webgrade') {
1756: $currentstring .= $token->[4];
1757: } elsif ($target eq 'tex') {
1758: &Apache::lonxml::startredirection();
1759: }
1760: return $currentstring;
1761: }
1762:
1763: sub end_u {
1764: my ($target,$token) = @_;
1765: my $currentstring = '';
1766: if ($target eq 'web' || $target eq 'webgrade') {
1767: $currentstring .= $token->[2];
1768: } elsif ($target eq 'tex') {
1769: $currentstring=&Apache::lonxml::endredirection();
1770: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1771: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1772: $currentstring=~s/(\S)\s*$/$1\}/;
1773: }
1774: return $currentstring;
1775: }
1776:
1777: #-- <ul> tag (end tag required)
1778: sub start_ul {
1779: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1780: my $currentstring = &end_p(); # Close off enclosing list.
1781: if ($target eq 'web' || $target eq 'webgrade') {
1782: $currentstring .= $token->[4];
1783: } elsif ($target eq 'tex') {
1784: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1785: $Apache::londefdef::list_index=0;
1786: if ($TeXtype eq 'disc') {
1787: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1788: '\renewcommand{\labelitemii}{$\bullet$}'.
1789: '\renewcommand{\labelitemiii}{$\bullet$}'.
1790: '\renewcommand{\labelitemiv}{$\bullet$}';
1791: } elsif ($TeXtype eq 'circle') {
1792: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1793: '\renewcommand{\labelitemii}{$\circ$}'.
1794: '\renewcommand{\labelitemiii}{$\circ$}'.
1795: '\renewcommand{\labelitemiv}{$\circ$}';
1796: } elsif ($TeXtype eq 'square') {
1797: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1798: '\renewcommand{\labelitemii}{$\diamond$}'.
1799: '\renewcommand{\labelitemiii}{$\diamond$}'.
1800: '\renewcommand{\labelitemiv}{$\diamond$}';
1801: }
1802: $currentstring .= '\strut \begin{itemize}';
1803: }
1804: return $currentstring;
1805: }
1806:
1807: sub end_ul {
1808: my ($target,$token) = @_;
1809: my $currentstring = '';
1810: if ($target eq 'web' || $target eq 'webgrade') {
1811: $currentstring = $token->[2];
1812: } elsif ($target eq 'tex') {
1813: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1814: '\renewcommand{\labelitemii}{$\bullet$}'.
1815: '\renewcommand{\labelitemiii}{$\bullet$}'.
1816: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1817: }
1818: return $currentstring;
1819: }
1820:
1821: #-- <menu> tag (end tag required)
1822: sub start_menu {
1823: my ($target,$token) = @_;
1824: my $currentstring = '';
1825: if ($target eq 'web' || $target eq 'webgrade') {
1826: $currentstring = $token->[4];
1827: } elsif ($target eq 'tex') {
1828: $currentstring = " \\begin{itemize} ";
1829: }
1830: return $currentstring;
1831: }
1832:
1833: sub end_menu {
1834: my ($target,$token) = @_;
1835: my $currentstring = '';
1836: if ($target eq 'web' || $target eq 'webgrade') {
1837: $currentstring = $token->[2];
1838: } elsif ($target eq 'tex') {
1839: $currentstring = " \\end{itemize}";
1840: }
1841: return $currentstring;
1842: }
1843:
1844: #-- <dir> tag (end tag required)
1845: sub start_dir {
1846: my ($target,$token) = @_;
1847: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1848: if ($target eq 'web' || $target eq 'webgrade') {
1849: $currentstring .= $token->[4];
1850: } elsif ($target eq 'tex') {
1851: $currentstring .= " \\begin{itemize} ";
1852: }
1853: return $currentstring;
1854: }
1855:
1856: sub end_dir {
1857: my ($target,$token) = @_;
1858: my $currentstring = '';
1859: if ($target eq 'web' || $target eq 'webgrade') {
1860: $currentstring = $token->[2];
1861: } elsif ($target eq 'tex') {
1862: $currentstring = " \\end{itemize}";
1863: }
1864: return $currentstring;
1865: }
1866:
1867: #-- <ol> tag (end tag required)
1868: sub start_ol {
1869: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1870: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1871: if ($target eq 'web' || $target eq 'webgrade') {
1872: $currentstring .= $token->[4];
1873: } elsif ($target eq 'tex') {
1874: $Apache::londefdef::list_index=0;
1875: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1876: if ($type eq '1') {
1877: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1878: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1879: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1880: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1881: } elsif ($type eq 'A') {
1882: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1883: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1884: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1885: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1886: } elsif ($type eq 'a') {
1887: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1888: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1889: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1890: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1891: } elsif ($type eq 'i') {
1892: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1893: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1894: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1895: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1896: } elsif ($type eq 'I') {
1897: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1898: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1899: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1900: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1901: }
1902: $currentstring .= '\strut \begin{enumerate}';
1903: }
1904: return $currentstring;
1905: }
1906:
1907: sub end_ol {
1908: my ($target,$token) = @_;
1909: my $currentstring = '';
1910: if ($target eq 'web' || $target eq 'webgrade') {
1911: $currentstring = $token->[2];
1912: } elsif ($target eq 'tex') {
1913: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1914: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1915: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1916: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1917: }
1918: return $currentstring;
1919: }
1920:
1921: #-- <dl> tag (end tag required)
1922: sub start_dl {
1923: my ($target,$token) = @_;
1924: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1925: if ($target eq 'web' || $target eq 'webgrade') {
1926: $currentstring .= $token->[4];
1927: } elsif ($target eq 'tex') {
1928: $currentstring .= '\begin{description}';
1929: $Apache::londefdef::DL++;
1930: push(@Apache::londefdef::description,[]);
1931: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1932: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1933: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1934: }
1935: return $currentstring;
1936: }
1937:
1938: sub end_dl {
1939: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1940: my $currentstring = '';
1941: if ($target eq 'web' || $target eq 'webgrade') {
1942: $currentstring = $token->[2];
1943: } elsif ($target eq 'tex') {
1944: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1945: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1946: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1947: $currentstring.=' '.$element.' ';
1948: }
1949: pop(@Apache::londefdef::description);
1950: $currentstring.='\end{description}';
1951: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1952: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1953: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1954: $Apache::londefdef::DL--;
1955: }
1956: return $currentstring;
1957: }
1958:
1959: #-- <dt> tag (end tag optional)
1960: sub start_dt {
1961: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1962: my $currentstring='';
1963: if ($target eq 'web' || $target eq 'webgrade') {
1964: $currentstring = $token->[4];
1965: } elsif ($target eq 'tex') {
1966: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1967: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1968: &Apache::lonxml::startredirection();
1969: $Apache::londefdef::DT[-1]++;
1970: $Apache::londefdef::seenDT[-1]=1;
1971: }
1972: return $currentstring;
1973: }
1974:
1975: sub end_dt {
1976: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1977: my $currentstring = '';
1978: if ($target eq 'web' || $target eq 'webgrade') {
1979: $currentstring = $token->[2];
1980: } elsif ($target eq 'tex') {
1981: if ($Apache::londefdef::DT[-1]) {
1982: my $data=&item_cleanup();
1983: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1984: $Apache::londefdef::DT[-1]--;
1985: }
1986: }
1987: return $currentstring;
1988: }
1989:
1990: sub item_cleanup {
1991: my $item=&Apache::lonxml::endredirection();
1992: $item=~s/\\begin{center}//g;
1993: $item=~s/\\end{center}//g;
1994: return $item;
1995: }
1996:
1997: #-- <dd> tag (end tag optional)
1998: sub start_dd {
1999: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2000: my $currentstring = '';
2001: if ($target eq 'web' || $target eq 'webgrade') {
2002: $currentstring = $token->[4];
2003: } elsif ($target eq 'tex') {
2004: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2005: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2006: if (!$Apache::londefdef::seenDT[-1]) {
2007: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2008: }
2009: push(@{$Apache::londefdef::description[-1]},'');
2010: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2011: $Apache::londefdef::DD[-1]++;
2012: &Apache::lonxml::startredirection();
2013: }
2014: return $currentstring;
2015: }
2016:
2017: sub end_dd {
2018: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2019: my $currentstring = '';
2020: if ($target eq 'web' || $target eq 'webgrade') {
2021: $currentstring = $token->[2];
2022: } elsif ($target eq 'tex') {
2023: $Apache::londefdef::description[-1]->[-1].=
2024: &Apache::lonxml::endredirection().' \vskip 0mm ';
2025: $Apache::londefdef::DD[-1]--;
2026: }
2027: return $currentstring;
2028: }
2029:
2030: #-- <table> tag (end tag required)
2031: # <table> also ends any prior <p> that is not closed.
2032: # but, unless I allow <p>'s to nest, that's the
2033: # only way I could think of to allow <p> in
2034: # <tr> <th> bodies
2035: #
2036: #list of supported attributes: border,width,TeXwidth,TeXtheme
2037: # align
2038: sub start_table {
2039: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2040: my $textwidth = '';
2041: my $currentstring = &end_p();
2042: if ($target eq 'web' || $target eq 'webgrade') {
2043: $currentstring .= $token->[4];
2044: } elsif ($target eq 'tex') {
2045: &disable_para(); # Can't have paras in a table.
2046:
2047:
2048: # New table code:
2049:
2050: # Get the parameters that we can do something about:
2051:
2052: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2053: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2054: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2055: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2056: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2057:
2058: # The only thing that needs any figuring out is the width.. and then only if it is
2059: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2060: #
2061:
2062: my $table = new Apache::lontable();
2063: if ((defined $border) && ($border > 0)) {
2064: # &Apache::lonnet::logthis("Turning on table borders: $border");
2065: $table->table_border(1);
2066: if ($cell_border ne 'none') {
2067: $table->cell_border(1); # html specs that border turns on both...unless rules='none'.
2068: }
2069: }
2070: # Only all or nothing for cell borders for now:
2071:
2072: if ((defined $cell_border) && ($cell_border ne 'none')) {
2073: # &Apache::lonnet::logthis("Turning on cell borders: $cell_border");
2074: $table->cell_border(1);
2075: }
2076: if (defined $theme) {
2077: $table->theme($theme);
2078: }
2079: if (defined $align) {
2080: $table->alignment($align);
2081: }
2082:
2083: # Missing width is most of page width
2084:
2085: if (!(defined $width)) {
2086: $width = '70%';
2087: }
2088:
2089: # If a percentage, need to calculate what this means in terms of
2090: # page width:
2091:
2092: if ($width =~ /%$/) {
2093: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2094: $width =~ s/%//;
2095: $width = $width * $textwidth / 100.0;
2096: $width .= " mm";
2097: $table->width($width);
2098: }
2099:
2100: push(@Apache::londefdef::table, $table);
2101: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2102:
2103: #--------------------------------------------------------
2104: # Old table code here.
2105: #--------------------------------------------------------
2106:
2107:
2108: if (0) {
2109: push(@Apache::londefdef::table, {});
2110: $Apache::londefdef::table[-1]{'row_number'} = -1;
2111: #maximum table's width (default coincides with text line length)
2112: if ($#Apache::londefdef::table==0) {
2113: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2114: $textwidth=~/(\d+\.?\d*)/;
2115: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2116: } else {
2117: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2118: #the maximum width of nested table is determined by LATeX width of parent cell
2119: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2120: } else {
2121: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2122: $textwidth=$Apache::londefdef::table[-2]{'width'};
2123: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2124: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2125: }
2126: }
2127: }
2128:
2129: # width either comes forced from the TeXwidth or the width parameters.
2130: # in either case it can be a percentage or absolute width.
2131: # in the width case we ignore absolute width
2132: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2133: if (!defined($TeXwidth)) {
2134: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2135: $safeeval,undef,1);
2136: if ($htmlwidth =~ /%/) {
2137: $TeXwidth = $htmlwidth;
2138: } else {
2139: $TeXwidth = $textwidth;
2140: }
2141: }
2142: # if the width is specified as a % it is converted to an absolute width.
2143: # otherwise.. just plugged right in the hash
2144:
2145: if ($TeXwidth=~/%/) {
2146: $TeXwidth=~/(\d+)/;
2147: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2148: } else {
2149: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2150: }
2151: # In the end, however the table width cannot be wider than $textwidth...
2152:
2153: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2154: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2155: }
2156: #table's border
2157: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2158: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2159: unless (defined $border) { $border = 0; }
2160: if ($border) {
2161: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2162: $Apache::londefdef::table[-1]{'vinc'} = '&';
2163: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2164: } else {
2165: $Apache::londefdef::table[-1]{'hinc'} = '';
2166: $Apache::londefdef::table[-1]{'vinc'} = '&';
2167: $Apache::londefdef::table[-1]{'vvinc'} = '';
2168: }
2169: if ($#Apache::londefdef::table==0) {
2170: # Note that \newline seems to destroy the alignment envs.
2171: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2172: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2173: }
2174: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2175: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2176: $Apache::londefdef::table[-1]{'objectlen'}=[];
2177: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2178: $Apache::londefdef::table[-1]{'maxlen'}=[];
2179: $Apache::londefdef::table[-1]{'minlen'}=[];
2180: $Apache::londefdef::table[-1]{'content'}=[];
2181: $Apache::londefdef::table[-1]{'align'}=[];
2182: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2183: }
2184:
2185: }
2186: return $currentstring;
2187: }
2188:
2189: sub end_table {
2190: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2191: my $currentstring = '';
2192: if ($target eq 'web' || $target eq 'webgrade') {
2193: $currentstring = $token->[2];
2194: } elsif ($target eq 'tex') {
2195:
2196:
2197: # New table code:
2198:
2199: my $table = pop(@Apache::londefdef::table);
2200: my $t = $table->generate();
2201: # &Apache::lonnet::logthis("Generating string");
2202: $currentstring = $t->generate_string();
2203: # &Apache::lonnet::logthis("Generated: $currentstring");
2204: &enable_para();
2205:
2206: }
2207: return $currentstring;
2208: }
2209:
2210: #-- <tr> tag (end tag optional)
2211: sub start_tr {
2212: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2213: my $currentstring = '';
2214: if ($target eq 'web' || $target eq 'webgrade') {
2215: $currentstring = $token->[4];
2216: } elsif ($target eq 'tex') {
2217:
2218: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2219: $Apache::londefdef::table[-1]->start_row();
2220:
2221: if ($align ne '') {
2222: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2223: }
2224:
2225: #---------------------------------------------------------------
2226: # Old table code.
2227: #---------------------------------------------------------------
2228:
2229: if (0) {
2230: $Apache::londefdef::table[-1]{'row_number'}++;
2231: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2232: if ($alignchar ne '') {
2233: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2234: } else {
2235: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2236: }
2237: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2238: #
2239: # Need to save the number of table columns to preserve the max # columns.
2240: #
2241: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2242: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2243: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2244: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2245: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2246: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2247: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2248: }
2249: }
2250: return $currentstring;
2251: }
2252:
2253: sub end_tr {
2254: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2255: my $currentstring = &end_p(); # Close any pending <p> in the row.
2256: if ($target eq 'web' || $target eq 'webgrade') {
2257: $currentstring .= $token->[2];
2258: } elsif ($target eq 'tex') {
2259:
2260: # In case the user is missing a </td> or </th> tag:
2261:
2262: if ($Apache::londefdef::TD_redirection) {
2263: &end_td_tex($parstack,$parser,$safeeval);
2264: }
2265: $Apache::londefdef::table[-1]->end_row();
2266:
2267: #-----------------------------------------------
2268: # Old table code
2269: #-----------------------------------------------
2270:
2271: if (0) {
2272: if ($Apache::londefdef::TD_redirection) {
2273: &end_td_tex($parstack,$parser,$safeeval);
2274: }
2275: # Counter columns must be the maximum number of columns seen
2276: # in the table so far so:
2277: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2278: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2279: }
2280: }
2281:
2282:
2283: }
2284: return $currentstring;
2285: }
2286:
2287: #-- <td> tag (end tag optional)
2288: sub start_td {
2289: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2290: my $currentstring = '';
2291: if ($target eq 'web' || $target eq 'webgrade') {
2292: $currentstring = $token->[4];
2293: } elsif ($target eq 'tex') {
2294: $Apache::londefdef::TD_redirection = 1;
2295: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2296: }
2297: return $currentstring;
2298: }
2299:
2300: sub tag_check {
2301: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2302: my @ar=@$parstack;
2303: for (my $i=$#ar-1;$i>=0;$i--) {
2304: if (lc($$tagstack[$i]) eq $good_tag) {
2305: &start_td_tex($parstack,$parser,$safeeval);
2306: last;
2307: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2308: splice @ar, $i+1;
2309: &end_td_tex(\@ar,$parser,$safeeval);
2310: &start_td_tex($parstack,$parser,$safeeval);
2311: last;
2312: }
2313: }
2314: return '';
2315: }
2316:
2317: #
2318: # Factor out cell configuration hash generation:
2319: #
2320:
2321: sub cell_config_hash {
2322: my ($align, $rowspan, $colspan, $width) = @_;
2323: if ($rowspan ne '') {
2324: $rowspan =~ s/^\s+|\s+$//g;
2325: }
2326: if ($colspan ne '') {
2327: $colspan =~ s/^\s+|\s+$//g;
2328: }
2329: my %config;
2330: if ($align ne '') {
2331: $config{'halign'} = $align;
2332: }
2333: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2334: $config{'colspan'} = $colspan;
2335: }
2336: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2337: $config{'rowspan'} = $rowspan;
2338: }
2339: if ($width ne '') {
2340: $config{'width'} = $width;
2341: }
2342: return \%config;
2343: }
2344:
2345: sub start_td_tex {
2346: my ($parstack,$parser,$safeeval) = @_;
2347:
2348: # At this stage, an empty cell is created with the
2349: # appropriate rowspan/colspan and alignment
2350: # attributes, but empty of text. end_td_tex will
2351: # fetch the contents from the recursive parse and
2352: # fill the cell with them:
2353: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2354: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2355: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2356: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2357: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2358:
2359: my $table = $Apache::londefdef::table[-1];
2360: $table->add_cell('', $config);
2361:
2362:
2363: #------------------------------------------------
2364: # Old table code.
2365: #------------------------------------------------
2366:
2367: if (0) {
2368:
2369: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2370: if ($alignchar eq '') {
2371: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2372: }
2373: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2374: $Apache::londefdef::table[-1]{'counter_columns'}++;
2375: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2376: if (defined $TeXwidth) {
2377: my $current_length=&recalc($TeXwidth);
2378: $current_length=~/(\d+\.?\d*)/;
2379: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2380: }
2381: }
2382: &Apache::lonxml::startredirection();
2383: return '';
2384: }
2385:
2386: sub end_td_tex {
2387:
2388: my $text = &Apache::lonxml::endredirection();
2389: my $table = $Apache::londefdef::table[-1];
2390: $table->append_cell_text($text);
2391:
2392: #-------------------------------------------------
2393: # Old table code
2394: #-------------------------------------------------
2395:
2396: if (0) {
2397: my ($parstack,$parser,$safeeval) = @_;
2398: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2399: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2400: my $data = &Apache::lonxml::endredirection();
2401:
2402: # The rowspan array of the table indicates which cells are part of a span.
2403: # n indicates the start of a span set of n rows.
2404: # ^ indicates a cell that continues a span set.
2405: # _ indicates the cell is at the bottom of a span set.
2406: # If this and subsequent cells are part of a rowspan, we must
2407: # push along the row until we find one that is not.
2408:
2409: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2410: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2411: # Part of a span.
2412: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2413: $current_column++;
2414: }
2415: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2416:
2417:
2418: # Get the column and row spans.
2419: # Colspan can be done via \multicolumn if I can figure out the data structs.
2420:
2421: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2422: if (!$colspan) {
2423: $colspan = 1;
2424: }
2425:
2426: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2427: if (!$rowspan) {
2428: $rowspan = 1;
2429: }
2430:
2431:
2432:
2433: for (my $c = 0; $c < $colspan; $c++) {
2434: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2435: for (my $i = 1; $i < $rowspan; $i++) {
2436: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2437: if ($i == ($rowspan-1)) {
2438: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2439: }
2440: }
2441: }
2442:
2443: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2444: if (defined $TeXwidth) {
2445: for (my $c = 0; $c < $colspan; $c++) {
2446: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2447: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2448: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2449: }
2450: } else {
2451: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2452: my $garbage_data=$data;
2453: my $fwidth=0;
2454: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2455: my $current_length=&recalc($1);
2456: $current_length=~/(\d+\.?\d*)/;
2457: if ($fwidth<$1) {$fwidth=$1;}
2458: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2459: }
2460: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2461: my $current_length=$1;
2462: if ($fwidth<$current_length) {$fwidth=$current_length;}
2463: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2464: }
2465: for (my $c = 0; $c < $colspan; $c++) {
2466: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2467: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2468: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2469: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2470: }
2471: } 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)*/) {
2472: my $garbage_data=$data;
2473: my $fwidth=0;
2474: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2475: my $current_length=&recalc($1);
2476: $current_length=~/(\d+\.?\d*)/;
2477: if ($fwidth<$1) {$fwidth=$1;}
2478: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2479: }
2480: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2481: my $current_length=&recalc($1);
2482: $current_length=~/(\d+\.?\d*)/;
2483: if ($fwidth<$1) {$fwidth=$1;}
2484: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2485: }
2486: for (my $c = 0; $c < $colspan; $c++) {
2487: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2488: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2489: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2490: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2491: }
2492: $data=~s/\\\\\s*$//;
2493: } else {
2494: $data=~s/^\s+(\S.*)/$1/;
2495: $data=~s/(.*\S)\s+$/$1/;
2496: $data=~s/(\s)+/$1/;
2497: my ($current_length,$min_length)=(0,0);
2498: if ($data=~/\\vskip/) {
2499: my $newdata=$data;
2500: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2501: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2502: foreach my $elementdata (@newdata) {
2503: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2504: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2505: my @words=split(/ /,$elementdata);
2506: foreach my $word (@words) {
2507: my $lengthword=2.5*&LATEX_length($word);
2508: if ($min_length<$lengthword) {$min_length=$lengthword;}
2509: }
2510: }
2511: } else {
2512: $current_length=2.5*&LATEX_length($data);
2513: my @words=split(/ /,$data);
2514: foreach my $word (@words) {
2515: my $lengthword=2*&LATEX_length($word);
2516: if ($min_length<$lengthword) {$min_length=$lengthword;}
2517: }
2518: }
2519: for (my $c = 0; $c < $colspan; $c++) {
2520: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2521: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2522: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2523: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2524: }
2525: }
2526: }
2527: # Substitute all of the tables nested in this cell in their appropriate places.
2528:
2529:
2530: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2531: for (my $in=0; $in<=$nested_count; $in++) {
2532: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2533: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2534: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2535: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2536:
2537: }
2538: # Should be be killing off the 'include' elements as they're used up?
2539:
2540: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2541:
2542:
2543:
2544:
2545: # the colspan array will indicate how many columns will be spanned by this
2546: # cell..this requires that counter_columns also be adjusted accordingly
2547: # so that the next bunch of text goes in the right cell. Note that since
2548: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2549: #
2550:
2551: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2552: for (my $i = 0; $i < ($colspan -1); $i++) {
2553: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2554: }
2555: for (my $r = 0; $r < $rowspan; $r++) {
2556: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2557: # Put empty text in spanned cols.
2558:
2559: }
2560:
2561: }
2562:
2563: return '';
2564: }
2565:
2566: sub end_td {
2567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2568: my $currentstring = '';
2569: if ($target eq 'web' || $target eq 'webgrade') {
2570: $currentstring = $token->[2];
2571: } elsif ($target eq 'tex') {
2572: $Apache::londefdef::TD_redirection =0;
2573: &end_td_tex($parstack,$parser,$safeeval);
2574: }
2575: return $currentstring;
2576: }
2577:
2578: #-- <th> tag (end tag optional)
2579: sub start_th {
2580: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2581: my $currentstring = '';
2582: if ($target eq 'web' || $target eq 'webgrade') {
2583: $currentstring = $token->[4];
2584: } elsif ($target eq 'tex') {
2585: $Apache::londefdef::TD_redirection = 1;
2586: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2587: }
2588: return $currentstring;
2589: }
2590:
2591: sub tagg_check {
2592: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2593: my @ar=@$parstack;
2594: for (my $i=$#ar-1;$i>=0;$i--) {
2595: if (lc($$tagstack[$i]) eq $good_tag) {
2596: &start_th_tex($parstack,$parser,$safeeval);
2597: last;
2598: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2599: splice @ar, $i+1;
2600: &end_th_tex(\@ar,$parser,$safeeval);
2601: &start_th_tex($parstack,$parser,$safeeval);
2602: last;
2603: }
2604: }
2605: return '';
2606: }
2607:
2608: sub start_th_tex {
2609: my ($parstack,$parser,$safeeval) = @_;
2610:
2611: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2612: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2613: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2614:
2615: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2616: my $table = $Apache::londefdef::table[-1];
2617: $table->add_cell('\textbf{', $config);
2618:
2619: #-------------------------------------------------------------------------------------
2620: #
2621: # Old table code.
2622: #
2623: #--------------------------------------------------------------------------------------
2624:
2625: if (0) {
2626:
2627:
2628: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2629: if ($alignchar eq '') {
2630: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2631: }
2632: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2633: $Apache::londefdef::table[-1]{'counter_columns'}++;
2634: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2635: if (defined $TeXwidth) {
2636: my $current_length=&recalc($TeXwidth);
2637: $current_length=~/(\d+\.?\d*)/;
2638: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2639: }
2640: }
2641:
2642: # Accept xml until the </th> tag.
2643:
2644: &Apache::lonxml::startredirection();
2645: return '';
2646: }
2647:
2648: sub end_th_tex {
2649: my ($parstack,$parser,$safeeval) = @_;
2650:
2651: my $table = $Apache::londefdef::table[-1];
2652: my $text = &Apache::lonxml::endredirection();
2653: $table->append_cell_text($text.'}');
2654:
2655: #-----------------------------------------------------------------------------
2656: # Old table code:
2657: #-----------------------------------------------------------------------------
2658:
2659: if (0) {
2660: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2661: my $data=&Apache::lonxml::endredirection();
2662: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2663: if (defined $TeXwidth) {
2664: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2665: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2666: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2667: } else {
2668: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2669: my $garbage_data=$data;
2670: my $fwidth=0;
2671: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2672: my $current_length=&recalc($1);
2673: $current_length=~/(\d+\.?\d*)/;
2674: if ($fwidth<$1) {$fwidth=$1;}
2675: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2676: }
2677: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2678: my $current_length=$1;
2679: if ($fwidth<$current_length) {$fwidth=$current_length;}
2680: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2681: }
2682: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2683: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2684: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2685: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2686: } else {
2687: $data=~s/^\s+(\S.*)/$1/;
2688: $data=~s/(.*\S)\s+$/$1/;
2689: $data=~s/(\s)+/$1/;
2690: my ($current_length,$min_length)=(0,0);
2691: if ($data=~/\\vskip/) {
2692: my $newdata=$data;
2693: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2694: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2695: foreach my $elementdata (@newdata) {
2696: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2697: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2698: my @words=split(/ /,$elementdata);
2699: foreach my $word (@words) {
2700: my $lengthword=2.5*&LATEX_length($word);
2701: if ($min_length<$lengthword) {$min_length=$lengthword;}
2702: }
2703: }
2704: } else {
2705: $current_length=2.5*&LATEX_length($data);
2706: my @words=split(/ /,$data);
2707: foreach my $word (@words) {
2708: my $lengthword=2*&LATEX_length($word);
2709: if ($min_length<$lengthword) {$min_length=$lengthword;}
2710: }
2711: }
2712: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2713: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2714: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2715: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2716: }
2717: }
2718: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2719: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2720: }
2721: #make data bold
2722: $data='\textbf{'.$data.'}';
2723: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2724: }
2725: return'';
2726: }
2727:
2728: sub end_th {
2729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2730: my $currentstring = &end_p(); # Close any open <p> in the row.
2731: if ($target eq 'web' || $target eq 'webgrade') {
2732: $currentstring .= $token->[2];
2733: } elsif ($target eq 'tex') {
2734: $Apache::londefdef::TD_redirection =0;
2735: &end_th_tex($parstack,$parser,$safeeval);
2736: }
2737: return $currentstring;
2738: }
2739:
2740: #-- <img> tag (end tag forbidden)
2741: #
2742: # Render the <IMG> tag.
2743: # <IMG> has the following attributes (in addition to the
2744: # standard HTML ones:
2745: # TeXwrap - Governs how the tex target will try to wrap text around
2746: # horizontally aligned images.
2747: # TeXwidth - The width of the image when rendered for print (mm).
2748: # TeXheight - The height of the image when rendered for print (mm)
2749: # (Note there seems to also be support for this as a % of page size)
2750: #
2751: sub start_img {
2752: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2753: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2754: undef,1);
2755: if (! $src &&
2756: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2757: ) {
2758: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2759: return '';
2760: }
2761: &Apache::lonxml::extlink($src);
2762: my $currentstring = '';
2763: my $scaling = .3;
2764:
2765: # Render unto browsers that which are the browser's...
2766:
2767: if ($target eq 'web' || $target eq 'webgrade') {
2768: my $enc = ('yes' eq
2769: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2770: $safeeval)));
2771: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2772: $enc);
2773:
2774: # and render unto TeX that which is LaTeX
2775: } elsif ($target eq 'tex') {
2776: #
2777: # The alignment will require some superstructure to be put around
2778: # the \includegraphics stuff. At present we can only partially
2779: # simulate the alignments offered by html.
2780: #
2781: #
2782: my $align = lc(&Apache::lonxml::get_param('align',
2783: $parstack,
2784: $safeeval,
2785: undef,1));
2786: if(!$align) {
2787: $align = "bottom"; # This is html's default so it's ours too.
2788: }
2789: #
2790: &Apache::lonxml::debug("Alignemnt = $align");
2791: # LaTeX's image/text wrapping is really bad since it wants to
2792: # make figures float.
2793: # The user has the optional parameter (applicable only to l/r
2794: # alignment to use the picins/parpic directive to get wrapped text
2795: # this is also imperfect.. that's why we give them a choice...
2796: # so they can't yell at us for our choice.
2797: #
2798: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2799: $parstack,
2800: $safeeval,
2801: undef,0);
2802: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2803: if(!$latex_rendering) {
2804: $latex_rendering = "texwrap";
2805: }
2806: # using texwrap inside a table does not work. So, if after all of this,
2807: # texwrap is on, we turn it off if we detect we're in a table:
2808: #
2809: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2810: $latex_rendering = 'parpic';
2811: }
2812:
2813: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2814:
2815: #if original bmp/gif/jpg/png file exist do following:
2816: my $origsrc=$src;
2817: my ($path,$file) = &get_eps_image($src);
2818: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2819: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2820: &Apache::lonxml::debug("path = $path file = $file src = $src");
2821: if (-e $src) {
2822: &Apache::lonxml::debug("$src exists");
2823: my ($height_param,$width_param)=
2824: &image_size($origsrc,0.3,$parstack,$safeeval);
2825: my $size;
2826: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2827: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2828: # Default size if not able to extract that (e.g. eps image).
2829:
2830: # &Apache::lonnet::logthis("Size = $size");
2831:
2832: $size='['.$size;
2833: $size=~s/,$/]/;
2834: $currentstring .= '\graphicspath{{'.$path.'}}'
2835: .'\includegraphics'.$size.'{'.$file.'} ';
2836: my $closure;
2837: ($currentstring, $closure) = &align_latex_image($align,
2838: $latex_rendering,
2839: $currentstring,
2840: $width_param,
2841: $height_param);
2842: $currentstring .= $closure;
2843:
2844: } else {
2845: &Apache::lonxml::debug("$src does not exist");
2846: #original image file doesn't exist so check the alt attribute
2847: my $alt =
2848: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2849: unless ($alt) {
2850: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2851: }
2852:
2853: if ($alt) { $currentstring .= ' '.$alt.' '; }
2854: }
2855:
2856: # And here's where the semi-quote breaks down: allow the user
2857: # to edit the beast as well by rendering the problem for edit:
2858: } elsif ($target eq 'edit') {
2859: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2860: $currentstring .=&Apache::edit::tag_start($target,$token);
2861: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2862: &Apache::edit::browse('src',undef,'alt',$only).' '.
2863: &Apache::edit::search('src',undef,'alt').'<br />';
2864: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2865: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2866: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2867: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2868: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2869: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2870: ['','bottom','middle','top','left','right'],$token,5);
2871: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2872: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2873: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2874: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2875:
2876: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2877: ['no','yes'], $token, 2);
2878: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2879: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2880: }
2881: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2882: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2883: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2884: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2885:
2886: if ($token->[2]{'src'}=~/\$/) {
2887: $currentstring.=&mt('Variable image source');
2888: } elsif ($token->[2]{'src'}=~/\S/) {
2889: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2890: if ($width) { $currentstring.=' width="'.$width.'" '; }
2891: if ($height) { $currentstring.=' height="'.$height.'" '; }
2892: $currentstring .= ' />';
2893: } else {
2894: $currentstring.=&mt("No image source specified");
2895: }
2896: } elsif ($target eq 'modified') {
2897: my ($osrc,$owidth,$oheight)=
2898: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2899: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2900: $safeeval,'src','alt','align',
2901: 'TeXwidth','TeXheight', 'TeXwrap',
2902: 'width','height','encrypturl');
2903: my ($nsrc,$nwidth,$nheight)=
2904: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2905: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2906: &image_replication($loc);
2907: my ($iwidth,$iheight);
2908: if (-e $loc) {
2909: my $image = Image::Magick->new;
2910: $image->Read($loc);
2911: ($iwidth, $iheight) = ($image->Get('width'),
2912: $image->Get('height'));
2913: }
2914: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2915: # changed image or no size specified,
2916: # if they didn't explicitly change the
2917: # width or height use the ones from the image
2918: if ($iwidth && $iheight) {
2919: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2920: $token->[2]{'width'} = $iwidth;$ctag=1;
2921: }
2922: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2923: $token->[2]{'height'}=$iheight;$ctag=1;
2924: }
2925: }
2926: }
2927: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2928: # if we don't have a width or height
2929: if ($iwidth && $cwidth && !$cheight) {
2930: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2931: }
2932: if ($iheight && $cheight && !$cwidth) {
2933: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2934: }
2935: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2936: }
2937:
2938: return $currentstring;
2939: }
2940:
2941: sub end_img {
2942: my ($target,$token) = @_;
2943: my $currentstring = '';
2944: if ($target eq 'web' || $target eq 'webgrade') {
2945: $currentstring = $token->[2];
2946: } elsif ($target eq 'tex') {
2947: $currentstring = '';
2948: }
2949: return $currentstring;
2950: }
2951:
2952: #-- <applet> tag (end tag required)
2953: sub start_applet {
2954: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2955:
2956: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2957: &Apache::lonxml::extlink($code);
2958: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2959: undef,1);
2960: &Apache::lonxml::extlink($archive);
2961: my $currentstring = '';
2962: if ($target eq 'web' || $target eq 'webgrade') {
2963: $currentstring = &Apache::lonenc::encrypt_ref($token,
2964: {'code'=>$code,
2965: 'archive'=>$archive}
2966: );
2967: } elsif ($target eq 'tex') {
2968: # Turn off some stuff we can't be inside thank you LaTeX
2969:
2970: my $restart_sub = 0;
2971: my $restart_sup = 0;
2972:
2973: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2974: # using the start_ stop_ functions.. those tags only care about
2975: # $target.
2976:
2977: if (&is_inside_of($tagstack, "sub")) {
2978: $restart_sub = 1;
2979: $currentstring .= &end_sub($target, $token, $tagstack,
2980: $parstack, $parser, $safeeval);
2981: }
2982: if (&is_inside_of($tagstack, "sup")) {
2983: $restart_sup = 1;
2984: $currentstring .= &end_sup($target, $token, $tagstack,
2985: $parstack, $parser, $safeeval);
2986: }
2987:
2988: # Now process the applet; just replace it with its alt attribute.
2989:
2990: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2991: $safeeval,undef,1);
2992: unless ($alttag) {
2993: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2994: undef,1);
2995: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2996: $code);
2997: }
2998: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2999: '.}\end{center}';
3000:
3001: # Turn stuff back on that we can't be inside of.
3002:
3003: if ($restart_sub) {
3004: $currentstring .= &start_sub($target, $token, $tagstack,
3005: $parstack, $parser, $safeeval);
3006: }
3007: if ($restart_sup) {
3008: $currentstring .= &start_sup($target, $token, $tagstack,
3009: $parstack, $parser, $safeeval);
3010: }
3011: }
3012: return $currentstring;
3013: }
3014:
3015: sub end_applet {
3016: my ($target,$token) = @_;
3017: my $currentstring = '';
3018: if ($target eq 'web' || $target eq 'webgrade') {
3019: $currentstring = $token->[2];
3020: } elsif ($target eq 'tex') {
3021: }
3022: return $currentstring;
3023: }
3024:
3025: #-- <embed> tag (end tag optional/required)
3026: sub start_embed {
3027: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3028: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3029: &Apache::lonxml::extlink($src);
3030: my $currentstring = '';
3031: if ($target eq 'web' || $target eq 'webgrade') {
3032: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3033: } elsif ($target eq 'tex') {
3034: }
3035: return $currentstring;
3036: }
3037:
3038: sub end_embed {
3039: my ($target,$token) = @_;
3040: my $currentstring = '';
3041: if ($target eq 'web' || $target eq 'webgrade') {
3042: $currentstring = $token->[2];
3043: } elsif ($target eq 'tex') {
3044: # ./.
3045: }
3046: return $currentstring;
3047: }
3048:
3049: #-- <param> tag (end tag forbidden)
3050: sub start_param {
3051: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3052: if (&Apache::lonxml::get_param('name',$parstack,
3053: $safeeval,undef,1)=~/^cabbase$/i) {
3054: my $value=&Apache::lonxml::get_param('value',$parstack,
3055: $safeeval,undef,1);
3056: &Apache::lonxml::extlink($value);
3057: }
3058:
3059: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3060: &Apache::lonxml::extlink($src);
3061: my $currentstring = '';
3062: if ($target eq 'web' || $target eq 'webgrade') {
3063: my %toconvert;
3064: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3065: if ($src) { $toconvert{'src'}= $src; }
3066: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3067: undef,1);
3068: if ($name=~/^cabbase$/i) {
3069: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3070: $safeeval,undef,1);
3071: }
3072: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3073: } elsif ($target eq 'tex') {
3074: }
3075: return $currentstring;
3076: }
3077:
3078: sub end_param {
3079: my ($target,$token) = @_;
3080: my $currentstring = '';
3081: if ($target eq 'web' || $target eq 'webgrade') {
3082: $currentstring = $token->[2];
3083: } elsif ($target eq 'tex') {
3084: }
3085: return $currentstring;
3086: }
3087:
3088: #-- <allow> tag
3089: sub start_allow {
3090: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3091: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3092: &Apache::lonxml::extlink($src);
3093:
3094: if ($target eq 'tex') { &image_replication($src); }
3095: my $result;
3096: if ($target eq 'edit') {
3097: $result .=&Apache::edit::tag_start($target,$token);
3098: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3099: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3100: } elsif ($target eq 'modified') {
3101: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3102: $safeeval,'src');
3103: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3104: }
3105: return $result;
3106: }
3107:
3108: sub end_allow {
3109: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3110: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3111: return '';
3112: }
3113:
3114: #-- Frames (end tag required)
3115: #-- <frameset>
3116: sub start_frameset {
3117: my ($target,$token) = @_;
3118: my $currentstring = ''; # Close any pending para.
3119: if ($target eq 'web' || $target eq 'webgrade') {
3120: $currentstring =
3121: &Apache::loncommon::start_page($Apache::londefdef::title,
3122: $Apache::londefdef::head,
3123: {'add_entries' => $token->[2],
3124: # 'no_title' => 1,
3125: 'force_register' => 1,
3126: 'frameset' => 1,});
3127:
3128: }
3129: return $currentstring;
3130: }
3131:
3132: sub end_frameset {
3133: my ($target,$token) = @_;
3134: my $currentstring = '';
3135: if ($target eq 'web' || $target eq 'webgrade') {
3136: $currentstring = $token->[2];
3137: }
3138: return $currentstring;
3139: }
3140:
3141: #-- <xmp> (end tag required)
3142: sub start_xmp {
3143: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3144: my $currentstring = '';
3145: if ($target eq 'web' || $target eq 'webgrade') {
3146: $currentstring .= $token->[4];
3147: } elsif ($target eq 'tex') {
3148: $currentstring .= '\begin{verbatim}';
3149: }
3150: return $currentstring;
3151: }
3152:
3153: sub end_xmp {
3154: my ($target,$token) = @_;
3155: my $currentstring = '';
3156: if ($target eq 'web' || $target eq 'webgrade') {
3157: $currentstring .= $token->[2];
3158: } elsif ($target eq 'tex') {
3159: $currentstring .= '\end{verbatim}';
3160: }
3161: return $currentstring;
3162: }
3163:
3164: #-- <pre> (end tag required)
3165: sub start_pre {
3166: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3167: my $currentstring = &end_p(); # close off pending <p>
3168: if ($target eq 'web' || $target eq 'webgrade') {
3169: $currentstring .= $token->[4];
3170: } elsif ($target eq 'tex') {
3171: $currentstring .= '\begin{verbatim}';
3172: &Apache::lonxml::disable_LaTeX_substitutions();
3173: }
3174: return $currentstring;
3175: }
3176:
3177: sub end_pre {
3178: my ($target,$token) = @_;
3179: my $currentstring = '';
3180: if ($target eq 'web' || $target eq 'webgrade') {
3181: $currentstring .= $token->[2];
3182: } elsif ($target eq 'tex') {
3183: $currentstring .= '\end{verbatim}';
3184: &Apache::lonxml::enable_LaTeX_substitutions();
3185: }
3186: return $currentstring;
3187: }
3188:
3189: #-- <insert>
3190: sub start_insert {
3191: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3192: my $currentstring = '';
3193: if ($target eq 'web' || $target eq 'webgrade') {
3194: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3195: $currentstring .= '<b>'.$display.'</b>';;
3196: }
3197: return $currentstring;
3198: }
3199:
3200: sub end_insert {
3201: my ($target,$token) = @_;
3202: my $currentstring = '';
3203: if ($target eq 'web' || $target eq 'webgrade') {
3204: $currentstring .= '';
3205: }
3206: return $currentstring;
3207: }
3208:
3209: #-- <externallink>
3210: sub start_externallink {
3211: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3212: my $currentstring = '';
3213: if ($target eq 'web' || $target eq 'webgrade') {
3214: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3215: $currentstring .= '<b>'.$display.'</b>';;
3216: }
3217: return $currentstring;
3218: }
3219:
3220: sub end_externallink {
3221: my ($target,$token) = @_;
3222: my $currentstring = '';
3223: if ($target eq 'web' || $target eq 'webgrade') {
3224: $currentstring .= '';
3225: }
3226: return $currentstring;
3227: }
3228:
3229: #-- <blankspace heigth="">
3230: sub start_blankspace {
3231: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3232: my $currentstring = &end_p(); # closes off any unclosed <p>
3233: if ($target eq 'tex') {
3234: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3235: $currentstring .= '\vskip '.$howmuch.' ';
3236: }
3237: return $currentstring;
3238: }
3239:
3240: sub end_blankspace {
3241: my ($target,$token) = @_;
3242: my $currentstring = '';
3243: if ($target eq 'tex') {
3244: $currentstring .= '';
3245: }
3246: return $currentstring;
3247: }
3248:
3249: #-- <abbr> tag (end tag required)
3250: sub start_abbr {
3251: my ($target,$token) = @_;
3252: my $currentstring = '';
3253: if ($target eq 'web' || $target eq 'webgrade') {
3254: $currentstring = $token->[4];
3255: }
3256: return $currentstring;
3257: }
3258:
3259: sub end_abbr {
3260: my ($target,$token) = @_;
3261: my $currentstring = '';
3262: if ($target eq 'web' || $target eq 'webgrade') {
3263: $currentstring = $token->[2];
3264: }
3265: return $currentstring;
3266: }
3267:
3268: #-- <acronym> tag (end tag required)
3269: sub start_acronym {
3270: my ($target,$token) = @_;
3271: my $currentstring = '';
3272: if ($target eq 'web' || $target eq 'webgrade') {
3273: $currentstring = $token->[4];
3274: }
3275: return $currentstring;
3276: }
3277:
3278: sub end_acronym {
3279: my ($target,$token) = @_;
3280: my $currentstring = '';
3281: if ($target eq 'web' || $target eq 'webgrade') {
3282: $currentstring = $token->[2];
3283: }
3284: return $currentstring;
3285: }
3286:
3287: #-- <area> tag (end tag forbidden)
3288: sub start_area {
3289: my ($target,$token) = @_;
3290: my $currentstring = '';
3291: if ($target eq 'web' || $target eq 'webgrade') {
3292: $currentstring = $token->[4];
3293: }
3294: return $currentstring;
3295: }
3296:
3297: sub end_area {
3298: my ($target,$token) = @_;
3299: my $currentstring = '';
3300: if ($target eq 'web' || $target eq 'webgrade') {
3301: $currentstring = $token->[2];
3302: }
3303: return $currentstring;
3304: }
3305:
3306: #-- <base> tag (end tag forbidden)
3307: sub start_base {
3308: my ($target,$token) = @_;
3309: my $currentstring = '';
3310: if ($target eq 'web' || $target eq 'webgrade') {
3311: $currentstring = $token->[4];
3312: }
3313: return $currentstring;
3314: }
3315:
3316: sub end_base {
3317: my ($target,$token) = @_;
3318: my $currentstring = '';
3319: if ($target eq 'web' || $target eq 'webgrade') {
3320: $currentstring = $token->[2];
3321: }
3322: return $currentstring;
3323: }
3324:
3325: #-- <bdo> tag (end tag required)
3326: sub start_bdo {
3327: my ($target,$token) = @_;
3328: my $currentstring = '';
3329: if ($target eq 'web' || $target eq 'webgrade') {
3330: $currentstring = $token->[4];
3331: }
3332: return $currentstring;
3333: }
3334:
3335: sub end_bdo {
3336: my ($target,$token) = @_;
3337: my $currentstring = '';
3338: if ($target eq 'web' || $target eq 'webgrade') {
3339: $currentstring = $token->[2];
3340: }
3341: return $currentstring;
3342: }
3343:
3344: #-- <bgsound> tag (end tag optional)
3345: sub start_bgsound {
3346: my ($target,$token) = @_;
3347: my $currentstring = '';
3348: if ($target eq 'web' || $target eq 'webgrade') {
3349: $currentstring = $token->[4];
3350: }
3351: return $currentstring;
3352: }
3353:
3354: sub end_bgsound {
3355: my ($target,$token) = @_;
3356: my $currentstring = '';
3357: if ($target eq 'web' || $target eq 'webgrade') {
3358: $currentstring = $token->[2];
3359: }
3360: return $currentstring;
3361: }
3362:
3363: #-- <blink> tag (end tag required)
3364: sub start_blink {
3365: my ($target,$token) = @_;
3366: my $currentstring = '';
3367: if ($target eq 'web' || $target eq 'webgrade') {
3368: $currentstring = $token->[4];
3369: }
3370: return $currentstring;
3371: }
3372:
3373: sub end_blink {
3374: my ($target,$token) = @_;
3375: my $currentstring = '';
3376: if ($target eq 'web' || $target eq 'webgrade') {
3377: $currentstring = $token->[2];
3378: }
3379: return $currentstring;
3380: }
3381:
3382: #-- <blockquote> tag (end tag required)
3383: sub start_blockquote {
3384: my ($target,$token) = @_;
3385: my $currentstring = &end_p(); # Close any unclosed <p>
3386: if ($target eq 'web' || $target eq 'webgrade') {
3387: $currentstring .= $token->[4];
3388: }
3389: if ($target eq 'tex') {
3390: $currentstring .= '\begin{quote}';
3391: }
3392: return $currentstring;
3393: }
3394:
3395: sub end_blockquote {
3396: my ($target,$token) = @_;
3397: my $currentstring = '';
3398: if ($target eq 'web' || $target eq 'webgrade') {
3399: $currentstring = $token->[2];
3400: }
3401: if ($target eq 'tex') {
3402: $currentstring = '\end{quote}';
3403: }
3404: return $currentstring;
3405: }
3406:
3407: #-- <button> tag (end tag required)
3408: sub start_button {
3409: my ($target,$token) = @_;
3410: my $currentstring = '';
3411: if ($target eq 'web' || $target eq 'webgrade') {
3412: $currentstring = $token->[4];
3413: }
3414: return $currentstring;
3415: }
3416:
3417: sub end_button {
3418: my ($target,$token) = @_;
3419: my $currentstring = '';
3420: if ($target eq 'web' || $target eq 'webgrade') {
3421: $currentstring = $token->[2];
3422: }
3423: return $currentstring;
3424: }
3425:
3426: #-- <caption> tag (end tag required)
3427: sub start_caption {
3428: my ($target,$token) = @_;
3429: my $currentstring = '';
3430: if ($target eq 'web' || $target eq 'webgrade') {
3431: $currentstring = $token->[4];
3432: }
3433: return $currentstring;
3434: }
3435:
3436: sub end_caption {
3437: my ($target,$token) = @_;
3438: my $currentstring = '';
3439: if ($target eq 'web' || $target eq 'webgrade') {
3440: $currentstring = $token->[2];
3441: }
3442: return $currentstring;
3443: }
3444:
3445: #-- <col> tag (end tag forbdden)
3446: sub start_col {
3447: my ($target,$token) = @_;
3448: my $currentstring = '';
3449: if ($target eq 'web' || $target eq 'webgrade') {
3450: $currentstring = $token->[4];
3451: }
3452: return $currentstring;
3453: }
3454:
3455: sub end_col {
3456: my ($target,$token) = @_;
3457: my $currentstring = '';
3458: if ($target eq 'web' || $target eq 'webgrade') {
3459: $currentstring = $token->[2];
3460: }
3461: return $currentstring;
3462: }
3463:
3464: #-- <colgroup> tag (end tag optional)
3465: sub start_colgroup {
3466: my ($target,$token) = @_;
3467: my $currentstring = '';
3468: if ($target eq 'web' || $target eq 'webgrade') {
3469: $currentstring = $token->[4];
3470: }
3471: return $currentstring;
3472: }
3473:
3474: sub end_colgroup {
3475: my ($target,$token) = @_;
3476: my $currentstring = '';
3477: if ($target eq 'web' || $target eq 'webgrade') {
3478: $currentstring = $token->[2];
3479: }
3480: return $currentstring;
3481: }
3482:
3483:
3484: #-- <del> tag (end tag required)
3485: sub start_del {
3486: my ($target,$token) = @_;
3487: my $currentstring = '';
3488: if ($target eq 'web' || $target eq 'webgrade') {
3489: $currentstring = $token->[4];
3490: } elsif ($target eq 'tex') {
3491: &disable_para();
3492: $currentstring .= '\st{';
3493: }
3494: return $currentstring;
3495: }
3496:
3497: sub end_del {
3498: my ($target,$token) = @_;
3499: my $currentstring = '';
3500: if ($target eq 'web' || $target eq 'webgrade') {
3501: $currentstring = $token->[2];
3502: } elsif ($target eq 'tex') {
3503: &enable_para();
3504: $currentstring = '}';
3505: }
3506: return $currentstring;
3507: }
3508:
3509: #-- <fieldset> tag (end tag required)
3510: sub start_fieldset {
3511: my ($target,$token) = @_;
3512: my $currentstring = '';
3513: if ($target eq 'web' || $target eq 'webgrade') {
3514: $currentstring = $token->[4];
3515: }
3516: return $currentstring;
3517: }
3518:
3519: sub end_fieldset {
3520: my ($target,$token) = @_;
3521: my $currentstring = '';
3522: if ($target eq 'web' || $target eq 'webgrade') {
3523: $currentstring = $token->[2];
3524: }
3525: return $currentstring;
3526: }
3527:
3528: #-- <frame> tag (end tag forbidden)
3529: sub start_frame {
3530: my ($target,$token) = @_;
3531: my $currentstring = '';
3532: if ($target eq 'web' || $target eq 'webgrade') {
3533: $currentstring = $token->[4];
3534: }
3535: return $currentstring;
3536: }
3537:
3538: sub end_frame {
3539: my ($target,$token) = @_;
3540: my $currentstring = '';
3541: if ($target eq 'web' || $target eq 'webgrade') {
3542: $currentstring = $token->[2];
3543: }
3544: return $currentstring;
3545: }
3546:
3547: #-- <iframe> tag (end tag required)
3548: sub start_iframe {
3549: my ($target,$token) = @_;
3550: my $currentstring = '';
3551: if ($target eq 'web' || $target eq 'webgrade') {
3552: $currentstring = $token->[4];
3553: }
3554: return $currentstring;
3555: }
3556:
3557: sub end_iframe {
3558: my ($target,$token) = @_;
3559: my $currentstring = '';
3560: if ($target eq 'web' || $target eq 'webgrade') {
3561: $currentstring = $token->[2];
3562: }
3563: return $currentstring;
3564: }
3565:
3566: #-- <ins> tag (end tag required)
3567: sub start_ins {
3568: my ($target,$token) = @_;
3569: my $currentstring = '';
3570: if ($target eq 'web' || $target eq 'webgrade') {
3571: $currentstring = $token->[4];
3572: }
3573: return $currentstring;
3574: }
3575:
3576: sub end_ins {
3577: my ($target,$token) = @_;
3578: my $currentstring = '';
3579: if ($target eq 'web' || $target eq 'webgrade') {
3580: $currentstring = $token->[2];
3581: }
3582: return $currentstring;
3583: }
3584:
3585: #-- <isindex> tag (end tag forbidden)
3586: sub start_isindex {
3587: my ($target,$token) = @_;
3588: my $currentstring = '';
3589: if ($target eq 'web' || $target eq 'webgrade') {
3590: $currentstring = $token->[4];
3591: }
3592: return $currentstring;
3593: }
3594:
3595: sub end_isindex {
3596: my ($target,$token) = @_;
3597: my $currentstring = '';
3598: if ($target eq 'web' || $target eq 'webgrade') {
3599: $currentstring = $token->[2];
3600: }
3601: return $currentstring;
3602: }
3603:
3604: #-- <keygen> tag (end tag forbidden)
3605: sub start_keygen {
3606: my ($target,$token) = @_;
3607: my $currentstring = '';
3608: if ($target eq 'web' || $target eq 'webgrade') {
3609: $currentstring = $token->[4];
3610: }
3611: return $currentstring;
3612: }
3613:
3614: sub end_keygen {
3615: my ($target,$token) = @_;
3616: my $currentstring = '';
3617: if ($target eq 'web' || $target eq 'webgrade') {
3618: $currentstring = $token->[2];
3619: }
3620: return $currentstring;
3621: }
3622:
3623: #-- <label> tag
3624: sub start_label {
3625: my ($target,$token) = @_;
3626: my $currentstring = '';
3627: if ($target eq 'web' || $target eq 'webgrade') {
3628: $currentstring = $token->[4];
3629: }
3630: return $currentstring;
3631: }
3632:
3633: sub end_label {
3634: my ($target,$token) = @_;
3635: my $currentstring = '';
3636: if ($target eq 'web' || $target eq 'webgrade') {
3637: $currentstring = $token->[2];
3638: }
3639: return $currentstring;
3640: }
3641:
3642: #-- <layer> tag (end tag required)
3643: sub start_layer {
3644: my ($target,$token) = @_;
3645: my $currentstring = '';
3646: if ($target eq 'web' || $target eq 'webgrade') {
3647: $currentstring = $token->[4];
3648: }
3649: return $currentstring;
3650: }
3651:
3652: sub end_layer {
3653: my ($target,$token) = @_;
3654: my $currentstring = '';
3655: if ($target eq 'web' || $target eq 'webgrade') {
3656: $currentstring = $token->[2];
3657: }
3658: return $currentstring;
3659: }
3660:
3661: #-- <legend> tag (end tag required)
3662: sub start_legend {
3663: my ($target,$token) = @_;
3664: my $currentstring = '';
3665: if ($target eq 'web' || $target eq 'webgrade') {
3666: $currentstring = $token->[4];
3667: }
3668: return $currentstring;
3669: }
3670:
3671: sub end_legend {
3672: my ($target,$token) = @_;
3673: my $currentstring = '';
3674: if ($target eq 'web' || $target eq 'webgrade') {
3675: $currentstring = $token->[2];
3676: }
3677: return $currentstring;
3678: }
3679:
3680: #-- <link> tag (end tag forbidden)
3681: sub start_link {
3682: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3683: my $currentstring = '';
3684: if ($target eq 'web' || $target eq 'webgrade') {
3685: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3686: undef,1);
3687: &Apache::lonxml::extlink($href);
3688: $currentstring = $token->[4];
3689: }
3690: return $currentstring;
3691: }
3692:
3693: sub end_link {
3694: my ($target,$token) = @_;
3695: my $currentstring = '';
3696: if ($target eq 'web' || $target eq 'webgrade') {
3697: $currentstring = $token->[2];
3698: }
3699: return $currentstring;
3700: }
3701:
3702: #-- <marquee> tag (end tag optional)
3703: sub start_marquee {
3704: my ($target,$token) = @_;
3705: my $currentstring = '';
3706: if ($target eq 'web' || $target eq 'webgrade') {
3707: $currentstring = $token->[4];
3708: }
3709: return $currentstring;
3710: }
3711:
3712: sub end_marquee {
3713: my ($target,$token) = @_;
3714: my $currentstring = '';
3715: if ($target eq 'web' || $target eq 'webgrade') {
3716: $currentstring = $token->[2];
3717: }
3718: return $currentstring;
3719: }
3720:
3721: #-- <multicol> tag (end tag required)
3722: sub start_multicol {
3723: my ($target,$token) = @_;
3724: my $currentstring = &end_p(); # Close any pending <p>
3725: if ($target eq 'web' || $target eq 'webgrade') {
3726: $currentstring .= $token->[4];
3727: }
3728: return $currentstring;
3729: }
3730:
3731: sub end_multicol {
3732: my ($target,$token) = @_;
3733: my $currentstring = '';
3734: if ($target eq 'web' || $target eq 'webgrade') {
3735: $currentstring = $token->[2];
3736: }
3737: return $currentstring;
3738: }
3739:
3740: #-- <nobr> tag (end tag required)
3741: sub start_nobr {
3742: my ($target,$token) = @_;
3743: my $currentstring = '';
3744: if ($target eq 'web' || $target eq 'webgrade') {
3745: $currentstring = $token->[4];
3746: } elsif ($target eq 'tex') {
3747: $currentstring='\mbox{';
3748: }
3749: return $currentstring;
3750: }
3751:
3752: sub end_nobr {
3753: my ($target,$token) = @_;
3754: my $currentstring = '';
3755: if ($target eq 'web' || $target eq 'webgrade') {
3756: $currentstring = $token->[2];
3757: } elsif ($target eq 'tex') {
3758: $currentstring='}';
3759: }
3760: return $currentstring;
3761: }
3762:
3763: #-- <noembed> tag (end tag required)
3764: sub start_noembed {
3765: my ($target,$token) = @_;
3766: my $currentstring = '';
3767: if ($target eq 'web' || $target eq 'webgrade') {
3768: $currentstring = $token->[4];
3769: }
3770: return $currentstring;
3771: }
3772:
3773: sub end_noembed {
3774: my ($target,$token) = @_;
3775: my $currentstring = '';
3776: if ($target eq 'web' || $target eq 'webgrade') {
3777: $currentstring = $token->[2];
3778: }
3779: return $currentstring;
3780: }
3781:
3782: #-- <noframes> tag (end tag required)
3783: sub start_noframes {
3784: my ($target,$token) = @_;
3785: my $currentstring = '';
3786: if ($target eq 'web' || $target eq 'webgrade') {
3787: $currentstring = $token->[4];
3788: }
3789: return $currentstring;
3790: }
3791:
3792: sub end_noframes {
3793: my ($target,$token) = @_;
3794: my $currentstring = '';
3795: if ($target eq 'web' || $target eq 'webgrade') {
3796: $currentstring = $token->[2];
3797: }
3798: return $currentstring;
3799: }
3800:
3801: #-- <nolayer> tag (end tag required)
3802: sub start_nolayer {
3803: my ($target,$token) = @_;
3804: my $currentstring = '';
3805: if ($target eq 'web' || $target eq 'webgrade') {
3806: $currentstring = $token->[4];
3807: }
3808: return $currentstring;
3809: }
3810:
3811: sub end_nolayer {
3812: my ($target,$token) = @_;
3813: my $currentstring = '';
3814: if ($target eq 'web' || $target eq 'webgrade') {
3815: $currentstring = $token->[2];
3816: }
3817: return $currentstring;
3818: }
3819:
3820: #-- <noscript> tag (end tag required)
3821: sub start_noscript {
3822: my ($target,$token) = @_;
3823: my $currentstring = '';
3824: if ($target eq 'web' || $target eq 'webgrade') {
3825: $currentstring = $token->[4];
3826: }
3827: return $currentstring;
3828: }
3829:
3830: sub end_noscript {
3831: my ($target,$token) = @_;
3832: my $currentstring = '';
3833: if ($target eq 'web' || $target eq 'webgrade') {
3834: $currentstring = $token->[2];
3835: }
3836: return $currentstring;
3837: }
3838:
3839: #-- <object> tag (end tag required)
3840: sub start_object {
3841: my ($target,$token) = @_;
3842: my $currentstring = '';
3843: if ($target eq 'web' || $target eq 'webgrade') {
3844: $currentstring = $token->[4];
3845: }
3846: return $currentstring;
3847: }
3848:
3849: sub end_object {
3850: my ($target,$token) = @_;
3851: my $currentstring = '';
3852: if ($target eq 'web' || $target eq 'webgrade') {
3853: $currentstring = $token->[2];
3854: }
3855: return $currentstring;
3856: }
3857:
3858: #-- <optgroup> tag (end tag required)
3859: sub start_optgroup {
3860: my ($target,$token) = @_;
3861: my $currentstring = '';
3862: if ($target eq 'web' || $target eq 'webgrade') {
3863: $currentstring = $token->[4];
3864: }
3865: return $currentstring;
3866: }
3867:
3868: sub end_optgroup {
3869: my ($target,$token) = @_;
3870: my $currentstring = '';
3871: if ($target eq 'web' || $target eq 'webgrade') {
3872: $currentstring = $token->[2];
3873: }
3874: return $currentstring;
3875: }
3876:
3877: #-- <samp> tag (end tag required)
3878: sub start_samp {
3879: my ($target,$token) = @_;
3880: my $currentstring = '';
3881: if ($target eq 'web' || $target eq 'webgrade') {
3882: $currentstring = $token->[4];
3883: } elsif ($target eq 'tex') {
3884: $currentstring='\texttt{';
3885: }
3886: return $currentstring;
3887: }
3888:
3889: sub end_samp {
3890: my ($target,$token) = @_;
3891: my $currentstring = '';
3892: if ($target eq 'web' || $target eq 'webgrade') {
3893: $currentstring = $token->[2];
3894: } elsif ($target eq 'tex') {
3895: $currentstring='}';
3896: }
3897: return $currentstring;
3898: }
3899:
3900: #-- <server> tag
3901: sub start_server {
3902: my ($target,$token) = @_;
3903: my $currentstring = '';
3904: if ($target eq 'web' || $target eq 'webgrade') {
3905: $currentstring = $token->[4];
3906: }
3907: return $currentstring;
3908: }
3909:
3910: sub end_server {
3911: my ($target,$token) = @_;
3912: my $currentstring = '';
3913: if ($target eq 'web' || $target eq 'webgrade') {
3914: $currentstring = $token->[2];
3915: }
3916: return $currentstring;
3917: }
3918:
3919: #-- <spacer> tag (end tag forbidden)
3920: sub start_spacer {
3921: my ($target,$token) = @_;
3922: my $currentstring = &end_p(); # Close off any open <p> tag.
3923: if ($target eq 'web' || $target eq 'webgrade') {
3924: $currentstring .= $token->[4];
3925: }
3926: return $currentstring;
3927: }
3928:
3929: sub end_spacer {
3930: my ($target,$token) = @_;
3931: my $currentstring = '';
3932: if ($target eq 'web' || $target eq 'webgrade') {
3933: $currentstring = $token->[2];
3934: }
3935: return $currentstring;
3936: }
3937:
3938: #-- <span> tag (end tag required)
3939: sub start_span {
3940: my ($target,$token) = @_;
3941: my $currentstring = '';
3942: if ($target eq 'web' || $target eq 'webgrade') {
3943: $currentstring = $token->[4];
3944: }
3945: return $currentstring;
3946: }
3947:
3948: sub end_span {
3949: my ($target,$token) = @_;
3950: my $currentstring = '';
3951: if ($target eq 'web' || $target eq 'webgrade') {
3952: $currentstring = $token->[2];
3953: }
3954: return $currentstring;
3955: }
3956:
3957: #-- <tbody> tag (end tag optional)
3958: sub start_tbody {
3959: my ($target,$token) = @_;
3960: my $currentstring = '';
3961: if ($target eq 'web' || $target eq 'webgrade') {
3962: $currentstring = $token->[4];
3963: }
3964: return $currentstring;
3965: }
3966:
3967: sub end_tbody {
3968: my ($target,$token) = @_;
3969: my $currentstring = '';
3970: if ($target eq 'web' || $target eq 'webgrade') {
3971: $currentstring = $token->[2];
3972: }
3973: return $currentstring;
3974: }
3975:
3976: #-- <tfoot> tag (end tag optional)
3977: sub start_tfoot {
3978: my ($target,$token) = @_;
3979: my $currentstring = '';
3980: if ($target eq 'web' || $target eq 'webgrade') {
3981: $currentstring = $token->[4];
3982: }
3983: return $currentstring;
3984: }
3985:
3986: sub end_tfoot {
3987: my ($target,$token) = @_;
3988: my $currentstring = '';
3989: if ($target eq 'web' || $target eq 'webgrade') {
3990: $currentstring = $token->[2];
3991: }
3992: return $currentstring;
3993: }
3994:
3995: #-- <thead> tag (end tag optional)
3996: sub start_thead {
3997: my ($target,$token) = @_;
3998: my $currentstring = '';
3999: if ($target eq 'web' || $target eq 'webgrade') {
4000: $currentstring = $token->[4];
4001: }
4002: return $currentstring;
4003: }
4004:
4005: sub end_thead {
4006: my ($target,$token) = @_;
4007: my $currentstring = '';
4008: if ($target eq 'web' || $target eq 'webgrade') {
4009: $currentstring = $token->[2];
4010: }
4011: return $currentstring;
4012: }
4013:
4014: #-- <var> tag
4015: sub start_var {
4016: my ($target,$token) = @_;
4017: my $currentstring = '';
4018: if ($target eq 'web' || $target eq 'webgrade') {
4019: $currentstring = $token->[4];
4020: } elsif ($target eq 'tex') {
4021: $currentstring = '\textit{';
4022: }
4023: return $currentstring;
4024: }
4025:
4026: sub end_var {
4027: my ($target,$token) = @_;
4028: my $currentstring = '';
4029: if ($target eq 'web' || $target eq 'webgrade') {
4030: $currentstring = $token->[2];
4031: } elsif ($target eq 'tex') {
4032: $currentstring = '}';
4033: }
4034: return $currentstring;
4035: }
4036:
4037: #-- <wbr> tag (end tag forbidden)
4038: sub start_wbr {
4039: my ($target,$token) = @_;
4040: my $currentstring = '';
4041: if ($target eq 'web' || $target eq 'webgrade') {
4042: $currentstring = $token->[4];
4043: }
4044: return $currentstring;
4045: }
4046:
4047: sub end_wbr {
4048: my ($target,$token) = @_;
4049: my $currentstring = '';
4050: if ($target eq 'web' || $target eq 'webgrade') {
4051: $currentstring = $token->[2];
4052: }
4053: return $currentstring;
4054: }
4055:
4056: #-- <hideweboutput> tag
4057: sub start_hideweboutput {
4058: my ($target,$token) = @_;
4059: if ($target eq 'web' || $target eq 'webgrade') {
4060: &Apache::lonxml::startredirection();
4061: }
4062: return '';
4063: }
4064:
4065: sub end_hideweboutput {
4066: my ($target,$token) = @_;
4067: my $currentstring = '';
4068: if ($target eq 'web' || $target eq 'webgrade') {
4069: $currentstring = &Apache::lonxml::endredirection();
4070: }
4071: return '';
4072: }
4073:
4074:
4075: sub image_replication {
4076: my $src = shift;
4077: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4078: #replicates eps or ps
4079: my $epssrc = my $pssrc = $src;
4080: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4081: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4082: if (not -e $epssrc && not -e $pssrc) {
4083: my $result=&Apache::lonnet::repcopy($epssrc);
4084: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4085: }
4086: return '';
4087: }
4088:
4089:
4090:
4091: sub resize_image {
4092: my ($height_param, $width_param, $scaling,
4093: $parstack, $safeeval, $depth, $cis) = @_;
4094:
4095: # First apply the scaling...
4096:
4097: $height_param = $height_param * $scaling;
4098: $width_param = $width_param * $scaling;
4099:
4100: #do we have any specified LaTeX size of the picture?
4101: my $toget='TeXwidth';
4102: if ($cis) {
4103: $toget=lc($toget);
4104: }
4105: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4106: $safeeval,$depth,$cis);
4107: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4108: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4109: $safeeval,$depth,$cis);
4110: #do we have any specified web size of the picture?
4111: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4112: $depth,1);
4113: if ($TeXwidth) {
4114: my $old_width_param=$width_param;
4115: if ($TeXwidth=~/(\d+)\s*\%/) {
4116: $width_param = $1*$env{'form.textwidth'}/100;
4117: } else {
4118: $width_param = $TeXwidth;
4119: }
4120: if ($TeXheight) {
4121: $height_param = $TeXheight;
4122: } elsif ($old_width_param) {
4123: $height_param=$TeXwidth/$old_width_param*$height_param;
4124: }
4125: } elsif ($TeXheight) {
4126: $height_param = $TeXheight;
4127: if ($height_param) {
4128: $width_param = $TeXheight/$height_param*$width_param;
4129: }
4130: } elsif ($width) {
4131: my $old_width_param=$width_param;
4132: $width_param = $width*$scaling;
4133: if ($old_width_param) {
4134: $height_param=$width_param/$old_width_param*$height_param;
4135: }
4136: }
4137: if ($width_param > $env{'form.textwidth'}) {
4138: my $old_width_param=$width_param;
4139: $width_param =0.95*$env{'form.textwidth'};
4140: if ($old_width_param) {
4141: $height_param=$width_param/$old_width_param*$height_param;
4142: }
4143: }
4144:
4145: return ($height_param, $width_param);
4146: }
4147:
4148: sub image_size {
4149: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4150:
4151: #size of image from gif/jpg/jpeg/png
4152: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4153: if (-e $ressrc) {
4154: $src = $ressrc;
4155: }
4156: my $image = Image::Magick->new;
4157: my $current_figure = $image->Read($src);
4158: my $width_param = $image->Get('width');
4159: my $height_param = $image->Get('height');
4160: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4161: undef($image);
4162:
4163: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4164: $scaling, $parstack, $safeeval,
4165: $depth, $cis);
4166:
4167: return ($height_param, $width_param);
4168: }
4169:
4170: sub image_width {
4171: my ($height, $width) = &image_size(@_);
4172: return $width;
4173: }
4174: # Not yet 100% sure this is correct in all circumstances..
4175: # due to my uncertainty about mods to image_size.
4176: #
4177: sub image_height {
4178: my ($height, $width) = &image_size(@_);
4179: return $height;
4180: }
4181:
4182: sub get_eps_image {
4183: my ($src)=@_;
4184: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4185:
4186: # In order to prevent the substitution of the alt text, we need to
4187: # be sure the orig_src file is on system now so:
4188:
4189: if (! -e $orig_src) {
4190: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4191: }
4192: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4193: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4194: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4195: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4196: &Apache::lonxml::debug("Filelocation gives: $src");
4197: if (! -e $src) {
4198: &Apache::lonxml::debug("$src does not exist");
4199: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4200: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4201: #if replication failed try to find ps file
4202: $src=~s/\.eps$/\.ps/;
4203: &Apache::lonxml::debug("Now looking for $src");
4204: #if no ps file try to replicate it.
4205: my $didrepcopy = &Apache::lonnet::repcopy($src);
4206: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4207: if ( (not -e $src) ||
4208: ($didrepcopy ne 'ok')) {
4209: &Apache::lonxml::debug("Failed to find or replicate $src");
4210:
4211: #if replication failed try to produce eps file dynamically
4212: $src=~s/\.ps$/\.eps/;
4213: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4214: my $newsrc=$orig_src;
4215: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4216: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4217: print FILE ("$newsrc\n");
4218: close(FILE);
4219: }
4220: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4221: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4222: if ($sext ne "") { # Put the ext. back in to uniquify.
4223: $src =~ s/\.eps$/$sext.eps/;
4224: }
4225:
4226: }
4227:
4228: }
4229: } else {
4230: # If the postscript file has spaces in its name,
4231: # LaTeX will gratuitiously vomit. Therefore
4232: # queue such files for copy with " " replaced by "_".
4233: # printout.pm will know them by their .ps or .eps extensions.
4234: my $newsrc = $orig_src;
4235: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4236: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4237: print FILE "$src\n";
4238: close FILE;
4239: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4240: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4241: }
4242: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4243: $path =~ s/ /\_/g;
4244: $file =~ s/ /\_/g;
4245: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4246: return ($path.'/',$file);
4247: }
4248:
4249: sub eps_generation {
4250: my ($src,$file,$width_param) = @_;
4251: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4252: if (open(my $tmpfile,">>$filename")) {
4253: print $tmpfile "$src\n";
4254: close($tmpfile);
4255: }
4256: my $newsrc = $src;
4257: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4258: $newsrc=~s{/home/httpd/html/res}{};
4259: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4260: $newsrc=~s{/\./}{/};
4261: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4262: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4263: $newsrc=~s{/home/httpd/lonUsers}{};
4264: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4265: }
4266: if ($newsrc=~m{/userfiles/}) {
4267: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4268: } else {
4269: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4270: }
4271: }
4272:
4273: sub file_path {
4274: my $src=shift;
4275: my ($file,$path);
4276: if ($src =~ m!(.*)/([^/]*)$!) {
4277: $file = $2;
4278: $path = $1.'/';
4279: }
4280: return $file,$path;
4281: }
4282:
4283:
4284: sub recalc {
4285: my $argument = shift;
4286: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4287: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4288: my $value=$1;
4289: my $units=$2;
4290: if ($units eq 'cm') {
4291: $value*=10;
4292: } elsif ($units eq 'in') {
4293: $value*=25.4;
4294: } elsif ($units eq 'pc') {
4295: $value*=(25.4*12/72.27);
4296: } elsif ($units eq 'pt') {
4297: $value*=(25.4/72.27);
4298: }
4299: return $value.' mm';
4300: }
4301:
4302: sub LATEX_length {
4303: my $garbage=shift;
4304: $garbage=~s/^\s+$//;
4305: $garbage=~s/^\s+(\S.*)/$1/;#space before
4306: $garbage=~s/(.*\S)\s+$/$1/;#space after
4307: $garbage=~s/(\s)+/$1/;#only one space
4308: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4309: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4310: $garbage=~s/([^\\])\$/$1/g;#$
4311: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4312: $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;
4313: $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;
4314: $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;
4315: $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;
4316: $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;
4317: $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;
4318: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4319: #remove some other LaTeX command
4320: $garbage=~s|\\(\w+)\\|\\|g;
4321: $garbage=~s|\\(\w+)(\s*)|$2|g;
4322: $garbage=~s|\+|11|g;
4323: my $value=length($garbage);
4324: return $value;
4325: }
4326:
4327:
4328: sub align_latex_image {
4329: my ($align, $latex_rendering, $image, $width, $height) = @_;
4330: my $currentstring; # The 1/2 wrapped image.
4331: my $closure; # The closure of the wrappage.
4332:
4333: # if it's none just return it back
4334: if ($latex_rendering eq 'none') {
4335: return ($image,'');
4336: }
4337:
4338: # If there's an alignment specification we need to honor it here.
4339: # For the horizontal alignments, we will also honor the
4340: # value of the latex specfication. The default is parbox,
4341: # and that's used for illegal values too.
4342: #
4343: # Even though we set a default alignment value, the user
4344: # could have given us an illegal value. In that case we
4345: # just use the default alignment of bottom..
4346: $currentstring = '';
4347: if ($align eq "top") {
4348: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4349: $closure = '}';
4350: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4351: my $offset = $height/2;
4352: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4353: $closure = '}';
4354: } elsif ($align eq "left") {
4355: if ($latex_rendering eq "parpic") {
4356: $currentstring .= '\parpic[l]{'.$image;
4357: $closure = '}';
4358: } elsif ($latex_rendering eq "parbox") {
4359: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4360: .$image;
4361: $closure = '\end{minipage}';
4362: } elsif ($latex_rendering eq "wrapfigure"
4363: || $latex_rendering ne 'none') { # wrapfig render
4364: $currentstring .=
4365: '\begin{wrapfigure}{l}{'.$width.'mm}'
4366: .'\scalebox{1.0}{'.$image;
4367: $closure = '}\end{wrapfigure}';
4368: }
4369: } elsif ($align eq "right") {
4370: if ($latex_rendering eq "parpic") {
4371: $currentstring .= '\parpic[r]{'.$image;
4372: $closure = '}';
4373: } elsif ($latex_rendering eq "parbox") {
4374: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4375: .$image;
4376: $closure = '\end{minipage}';
4377: } elsif ($latex_rendering eq "wrapfigure"
4378: || $latex_rendering ne 'none') { # wrapfig render
4379: $currentstring .=
4380: '\begin{wrapfigure}{r}{'.$width.'mm}'
4381: .'\scalebox{1.0}{'.$image;
4382: $closure = '}\end{wrapfigure}';
4383: }
4384: } else { # Bottom is also default.
4385: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4386: $currentstring .= "{$image";
4387: $closure = '}';
4388: }
4389: return ($currentstring, $closure);
4390: }
4391:
4392:
4393: sub is_inside_of {
4394: my ($tagstack, $tag) = @_;
4395: my @stack = @$tagstack;
4396: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4397: if ($stack[$i] eq $tag) {
4398: return 1;
4399: }
4400: }
4401: return 0;
4402: }
4403:
4404:
4405: #
4406: # This sub provides the typical LaTeX prefix matter for tex output:
4407: #
4408: sub latex_header {
4409: my ($mode) = @_;
4410: my $currentstring = '';
4411:
4412: $currentstring .=
4413: "\n% &Apache::lonxml::londefdef \n" .
4414: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4415: if (($env{'form.latex_type'}=~'batchmode') ||
4416: (!$env{'request.role.adv'}) ||
4417: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4418: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4419: '\renewcommand{\deg}{$^{\circ}$}'.
4420: '\usepackage{multirow}'.
4421: '\usepackage{longtable}'.
4422: '\usepackage{textcomp}'.
4423: '\usepackage{makeidx}'.
4424: '\usepackage[dvips]{graphicx}'.
4425: '\usepackage{wrapfig}'.
4426: '\usepackage{picins}'.
4427: '\usepackage[T1]{fontenc}'."\n".
4428: '\usepackage{lmodern}'."\n".
4429: '\usepackage[postscript]{ucs}'."\n".
4430: '\usepackage[utf8x]{inputenc}'."\n".
4431: '\usepackage{pifont}' ."\n".
4432: '\usepackage{latexsym}'."\n".
4433: '\usepackage{epsfig}'.
4434: "\\usepackage{xtab}\n".
4435: "\\usepackage{tabularx}\n".
4436: "\\usepackage{booktabs}\n".
4437: "\\usepackage{array}\n".
4438: "\\usepackage{colortbl}\n".
4439: "\\usepackage{xcolor}\n".
4440: '\usepackage{calc}'.
4441: '\usepackage{amsmath}'.
4442: '\usepackage{soul}',
4443: '\usepackage{amssymb}'.
4444: '\usepackage{amsfonts}'.
4445: '\usepackage{amsthm}'.
4446: '\usepackage{amscd}'
4447: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4448: '\usepackage[T1]{fontenc}'."\n".
4449: '\usepackage{lmodern}'."\n".
4450: '\usepackage[postscript]{ucs}'."\n".
4451: '\usepackage[utf8x]{inputenc}'."\n".
4452: '\usepackage{pifont}' . "\n";
4453:
4454: if($env{'form.pdfFormFields'} eq 'yes') {
4455: $currentstring .= '\usepackage{hyperref}'.
4456: '\usepackage{eforms}'.
4457: '\usepackage{tabularx}';
4458: }
4459:
4460: $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}}'.
4461: '\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}}';
4462: $currentstring .= '\begin{document}';
4463:
4464: return $currentstring;
4465:
4466: }
4467:
4468: =pod
4469:
4470: =head1 NAME
4471:
4472: Apache::londefdef.pm
4473:
4474: =head1 SYNOPSIS
4475:
4476: Tags Default Definition Module
4477:
4478: This is part of the LearningOnline Network with CAPA project
4479: described at http://www.lon-capa.org.
4480:
4481:
4482: =head1 NOTABLE SUBROUTINES
4483:
4484: =over
4485:
4486: =item start_hideweboutput()
4487:
4488: =item end_hideweboutput()
4489:
4490: =item image_replication()
4491:
4492: =item resize_image()
4493:
4494: Get correct sizing parameter for an image given
4495: it's initial ht. and wid. This allows sizing of
4496: images that are generated on-the-fly (e.g. gnuplot)
4497: as well as serving as a utility for image_size.
4498:
4499: Parameter:
4500: height_param
4501: width_param - Initial picture dimensions.
4502: scaling - A scale factor.
4503: parstack, - the current stack of tag attributes
4504: from the xml parser
4505: safeeval, - pointer to the safespace
4506: depth, - from what level in the stack to look for attributes
4507: (assumes -1 if unspecified)
4508: cis - look for attrubutes case insensitively
4509: (assumes false)
4510:
4511: Returns:
4512: height, width - new dimensions.
4513:
4514: =item image_size()
4515:
4516: =item image_width()
4517:
4518: =item image_height()
4519:
4520: =item get_eps_image()
4521:
4522: =item eps_generation()
4523:
4524: =item file_path()
4525:
4526: =item recalc()
4527:
4528: Converts a measurement in to mm from any of
4529: the other valid LaTeX units of measure.
4530: If the units of measure are missing from the
4531: parameter, it is assumed to be in and returned
4532: with mm units of measure
4533:
4534: =item LATEX_length()
4535:
4536: =item align_latex_image()
4537:
4538: Wrap image 'stuff' inside of the LaTeX required to implement
4539: alignment:
4540: align_tex_image(align, latex_rendering, image)
4541: Where:
4542: align - The HTML alignment specification.
4543: latex_rendering - rendering hint for latex.
4544: image - The LaTeX needed to insert the image itsef.
4545: width,height - dimensions of the image.
4546: Returns:
4547: The 1/2 wrapped image and the stuff required to close the
4548: wrappage. This allows e.g. randomlabel to insert more stuff
4549: into the closure.
4550:
4551:
4552: =item is_inside_of($tagstack, $tag)
4553: This sub returns true if the current state of Xml processing is inside of the tag.
4554: Parameters:
4555: tagstack - The tagstack from the parser.
4556: tag - The tag (without the <>'s.).
4557: Sample usage:
4558: if (is_inside_of($tagstack "table")) {
4559: I'm in a table....
4560: }
4561:
4562:
4563:
4564: =back
4565:
4566: =cut
4567:
4568:
4569: 1;
4570: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to londefdef.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / xml