File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.337:
download - view:
text,
annotated -
select for diffs
Tue Sep 19 10:57:11 2006 UTC (17 years, 8 months ago) by
foxr
Branches:
MAIN
CVS tags:
HEAD
- Do table cell alignments using the \multicolumn{1}{|alignspec}{ method.
- Add a correction for spacing at the end of a \center in a table cell.
this looks like it fixes all the nasty issues with space after centering.
See bug 3058.
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.337 2006/09/19 10:57:11 foxr Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::File();
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::Constants qw(:common);
50: use File::Basename;
51: # use Data::Dumper;
52:
53: BEGIN {
54:
55: &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'));
56:
57: }
58:
59: #
60: # Dumps all elements of the table structure.
61: # Need this 'cause evidently when given an array, Data::Dumper only seems
62: # to dump element 0.
63: #
64: #sub debug_dump_table {
65: # my $lastrow = $#Apache::londefdef::table;
66: # &Apache::lonnet::logthis("Dumping table: Last row index: $lastrow");
67: # my $row;
68: # for ($row =0; $row <= $lastrow; $row++ ) {
69: # my $text = Dumper($Apache::londefdef::table[$row]);
70: # &Apache::lonnet::logthis("table [ $row ]".$text);
71: # }
72: #}
73: sub initialize_londefdef {
74: $Apache::londefdef::TD_redirection=0;
75: @Apache::londefdef::table = ();
76: $Apache::londefdef::select=0;
77: undef(@Apache::londefdef::description);
78: @Apache::londefdef::DD=(0);
79: @Apache::londefdef::DT=(0);
80: @Apache::londefdef::seenDT=(0);
81: $Apache::londefdef::list_index=0;
82: undef($Apache::londefdef::head);
83: undef($Apache::londefdef::title);
84: }
85:
86: #======================= TAG SUBROUTINES =====================
87: #-- <output>
88: sub start_output {
89: my ($target) = @_;
90: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
91: return '';
92: }
93: sub end_output {
94: my ($target) = @_;
95: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
96: return '';
97: }
98: #-- <m> tag
99: sub start_m {
100: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
101: my $currentstring = '';
102: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
103: if ($target eq 'web' || $target eq 'analyze') {
104: &Apache::lonxml::debug("M is starting with:$inside:");
105: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
106: if ($eval eq 'on') {
107: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
108: #&Apache::lonxml::debug("M is evaulated to:$inside:");
109: }
110: my $tex = $inside;
111: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
112: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
113: if ($Apache::lontexconvert::errorstring) {
114: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>';
115: $tex = &HTML::Entities::encode($tex,'<>&"');
116: my ($linenumber) =
117: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
118: if (defined($linenumber)) {
119: my @tex=split("\n",$tex);
120: $tex[$linenumber]='<b><font color="red">'.
121: $tex[$linenumber].'</font></b>';
122: $tex=join("\n",@tex);
123: }
124: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
125: $Apache::lontexconvert::errorstring='';
126: }
127: #&Apache::lonxml::debug("M is ends with:$currentstring:");
128: $Apache::lonxml::post_evaluate=0;
129: } elsif ($target eq 'tex') {
130: $currentstring = $inside;
131: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
132: if ($eval eq 'on') {
133: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
134: }
135: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
136: # detect simple math mode entry exits, and convert them
137: # to use \ensuremath
138: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
139: $currentstring=~s/^(\s*)\$/$1/;
140: $currentstring=~s/\$(\s*)$/$1/;
141: $currentstring='\ensuremath{'.$currentstring.'}';
142: }
143: $Apache::lonxml::post_evaluate=0;
144: }
145: return $currentstring;
146: }
147:
148: sub end_m {
149: my ($target,$token) = @_;
150: my $currentstring = '';
151: if ($target eq 'tex') {
152: $currentstring = "";
153: }
154: return $currentstring;
155: }
156:
157: sub start_tthoption {
158: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
159: my $result;
160: if ($target eq 'web' || $target eq 'webgrade') {
161: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
162: $style);
163: $inside=~s/^\s*//;
164: if ($env{'browser.mathml'}) {
165: &tth::ttmoptions($inside);
166: } else {
167: &tth::tthoptions($inside);
168: }
169: }
170: return $result;
171: }
172:
173: sub end_tthoption {
174: my ($target,$token) = @_;
175: my $result;
176: return $result;
177: }
178:
179: #-- <html> tag (end tag optional)
180: sub start_html {
181: my ($target,$token) = @_;
182: my $currentstring = '';
183: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
184: # start_body() takes care of emitting the <html>
185: } elsif ($target eq 'tex') {
186: $currentstring .=
187: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
188: if (($env{'form.latex_type'}=~'batchmode') ||
189: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
190: $currentstring .= '\newcommand{\keephidden}[1]{}'.
191: '\renewcommand{\deg}{$^{\circ}$}'.
192: '\usepackage{multirow}'.
193: '\usepackage{longtable}'.
194: '\usepackage{textcomp}'.
195: '\usepackage{makeidx}'.
196: '\usepackage[dvips]{graphicx}'.
197: '\usepackage{wrapfig}'.
198: '\usepackage{picins}'.
199: '\usepackage{epsfig}'.
200: '\usepackage{calc}'.
201: '\usepackage{amsmath}'.
202: '\usepackage{amssymb}'.
203: '\usepackage{amsfonts}'.
204: '\usepackage{amsthm}'.
205: '\usepackage{amscd}'.
206: '\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}}'.
207: '\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}}';
208: }
209: return $currentstring;
210: }
211:
212: sub end_html {
213: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
214: my $currentstring = '';
215: if ($target eq 'web' || $target eq 'webgrade') {
216: # end_body takes care of the </html>
217: }
218: return $currentstring;
219: }
220:
221: #-- <head> tag (end tag optional)
222: sub start_head {
223: my ($target,$token) = @_;
224: my $currentstring = '';
225: if ($target eq 'web' || $target eq 'webgrade') {
226: &Apache::lonxml::startredirection();
227: }
228: return $currentstring;
229: }
230:
231: sub end_head {
232: my ($target,$token) = @_;
233: my $currentstring = '';
234: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
235: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
236: # in case there is a </head> but no <head>
237: if ($Apache::lonxml::redirection) {
238: $Apache::londefdef::head = &Apache::lonxml::endredirection();
239: }
240: }
241: return $currentstring;
242: }
243:
244: #-- <map> tag (end tag required)
245: sub start_map {
246: my ($target,$token) = @_;
247: my $currentstring = '';
248: if ($target eq 'web' || $target eq 'webgrade') {
249: $currentstring = $token->[4];
250: }
251: return $currentstring;
252: }
253:
254: sub end_map {
255: my ($target,$token) = @_;
256: my $currentstring = '';
257: if ($target eq 'web' || $target eq 'webgrade') {
258: $currentstring = $token->[2];
259: }
260: return $currentstring;
261: }
262:
263: #-- <select> tag (end tag required)
264: sub start_select {
265: my ($target,$token) = @_;
266: my $currentstring = '';
267: if ($target eq 'web' || $target eq 'webgrade') {
268: $currentstring = $token->[4];
269: } elsif ($target eq 'tex') {
270: $Apache::londefdef::select=0;
271: }
272: return $currentstring;
273: }
274:
275: sub end_select {
276: my ($target,$token) = @_;
277: my $currentstring = '';
278: if ($target eq 'web' || $target eq 'webgrade') {
279: $currentstring = $token->[2];
280: }
281: return $currentstring;
282: }
283:
284: #-- <option> tag (end tag optional)
285: sub start_option {
286: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
287: my $currentstring = '';
288: if ($target eq 'web' || $target eq 'webgrade') {
289: $currentstring = $token->[4];
290: } elsif ($target eq 'tex') {
291: $Apache::londefdef::select++;
292: if ($Apache::londefdef::select == 1) {
293: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
294: } else {
295: $currentstring='\keephidden{';
296: }
297: }
298: return $currentstring;
299: }
300:
301: sub end_option {
302: my ($target,$token) = @_;
303: my $currentstring = '';
304: if ($target eq 'web' || $target eq 'webgrade') {
305: $currentstring = $token->[2];
306: } elsif ($target eq 'tex') {
307: $currentstring='}';
308: }
309: return $currentstring;
310: }
311:
312: #-- <input> tag (end tag forbidden)
313: sub start_input {
314: my ($target,$token) = @_;
315: my $currentstring = '';
316: if ($target eq 'web' || $target eq 'webgrade') {
317: $currentstring = $token->[4];
318: }
319: return $currentstring;
320: }
321:
322: sub end_input {
323: my ($target,$token) = @_;
324: my $currentstring = '';
325: if ($target eq 'web' || $target eq 'webgrade') {
326: $currentstring = $token->[2];
327: }
328: return $currentstring;
329: }
330:
331: #-- <textarea> tag (end tag required)
332: sub start_textarea {
333: my ($target,$token) = @_;
334: my $currentstring = '';
335: if ($target eq 'web' || $target eq 'webgrade') {
336: $currentstring = $token->[4];
337: }
338: return $currentstring;
339: }
340:
341: sub end_textarea {
342: my ($target,$token) = @_;
343: my $currentstring = '';
344: if ($target eq 'web' || $target eq 'webgrade') {
345: $currentstring = $token->[2];
346: }
347: return $currentstring;
348: }
349:
350: #-- <form> tag (end tag required)
351: sub start_form {
352: my ($target,$token) = @_;
353: my $currentstring = '';
354: if ($target eq 'web' || $target eq 'webgrade') {
355: $currentstring = $token->[4];
356: }
357: return $currentstring;
358: }
359:
360: sub end_form {
361: my ($target,$token) = @_;
362: my $currentstring = '';
363: if ($target eq 'web' || $target eq 'webgrade') {
364: $currentstring = $token->[2];
365: }
366: return $currentstring;
367: }
368:
369: #-- <title> tag (end tag required)
370: sub start_title {
371: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
372: my $currentstring = '';
373: if ($target eq 'web' || $target eq 'webgrade') {
374: $Apache::londefdef::title =
375: &Apache::lonxml::get_all_text('/title',$parser,$style);
376: } elsif ($target eq 'tex') {
377: $currentstring .= '\keephidden{Title of the document: '
378: }
379: if ($target eq 'meta') {
380: $currentstring='<title>';
381: &start_output($target);
382: }
383: return $currentstring;
384: }
385:
386: sub end_title {
387: my ($target,$token) = @_;
388: my $currentstring = '';
389: if ($target eq 'web' || $target eq 'webgrade') {
390: # start_title takes care of swallowing the title
391: } elsif ($target eq 'tex') {
392: $currentstring .= '}';
393: }
394: if ($target eq 'meta') {
395: &end_output($target);
396: $currentstring='</title>';
397: }
398: return $currentstring;
399: }
400:
401: #-- <meta> tag (end tag forbidden)
402: sub start_meta {
403: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
404: my $currentstring = '';
405: if ($target eq 'web' || $target eq 'webgrade') {
406: my $args='';
407: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
408: if ($args eq '') {
409: &Apache::lonxml::get_all_text("/meta",$parser,$style);
410: } else {
411: $currentstring = $token->[4];
412: }
413: } elsif ($target eq 'meta') {
414: unless (&Apache::lonxml::get_param
415: ('http-equiv',$parstack,$safeeval,undef,1)) {
416: my $name=$token->[2]->{'name'};
417: $name=~tr/A-Z/a-z/;
418: $name=~s/\s/\_/gs;
419: $name=~s/\W//gs;
420: if ($name) {
421: $currentstring='<'.$name;
422: my $display=&Apache::lonxml::get_param
423: ('display',$parstack,$safeeval,undef,1);
424: if ($display) {
425: $display=~s/\"/\'/g;
426: $currentstring.=' display="'.$display.'"';
427: }
428: $currentstring.='>'.
429: &Apache::lonxml::get_param
430: ('content',$parstack,$safeeval,undef,1).
431: '</'.$name.'>';
432: }
433: my $display=&Apache::lonxml::get_param
434: ('display',$parstack,$safeeval,undef,1);
435: if ($display) {
436: $display=&HTML::Entities::encode($display,'<>&"');
437: $currentstring.='<'.$name.'.display>'.$display.
438: '</'.$name.'.display>';
439: }
440: }
441: } elsif ($target eq 'tex') {
442: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
443: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
444: if ((not defined $content) && (not defined $name)) {
445: &Apache::lonxml::startredirection();
446: }
447: }
448: return $currentstring;
449: }
450:
451: sub end_meta {
452: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
453: my $currentstring = '';
454: if ($target eq 'web' || $target eq 'webgrade') {
455: my $args='';
456: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
457: if ($args ne '') {
458: $currentstring = $token->[4];
459: }
460: } elsif ($target eq 'tex') {
461: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
462: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
463: if ((not defined $content) && (not defined $name)) {
464: &Apache::lonxml::endredirection();
465: }
466: }
467: return $currentstring;
468: }
469:
470: # accessrule
471: sub start_accessrule {
472: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
473: my $currentstring = '';
474: my $eff=&Apache::lonxml::get_param
475: ('effect',$parstack,$safeeval,undef,1);
476: my $realm=&Apache::lonxml::get_param
477: ('realm',$parstack,$safeeval,undef,1);
478: my $role=&Apache::lonxml::get_param
479: ('role',$parstack,$safeeval,undef,1);
480: $realm=~s/\s+//g;
481: $realm=~s/\//\_/g;
482: $realm=~s/^\_//;
483: $realm=~s/\W/\;/g;
484: $role=~s/\s+//g;
485: $role=~s/\//\_/g;
486: $role=~s/\W/\;/g;
487: if ($target eq 'web') {
488: my $args='';
489: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
490: if ($args eq '') {
491: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
492: } else {
493: $currentstring = $token->[4];
494: }
495: }
496: if ($target eq 'meta') {
497: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
498: }
499: return $currentstring;
500: }
501:
502: sub end_accessrule {
503: my ($target,$token,$tagstack,$parstack,$parser) = @_;
504: my $currentstring = '';
505: if ($target eq 'web') {
506: my $args='';
507: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
508: if ($args ne '') {
509: $currentstring = $token->[4];
510: }
511: }
512: return $currentstring;
513: }
514:
515: #-- <body> tag (end tag required)
516: sub start_body {
517: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
518: my $currentstring = '';
519:
520: if ($target eq 'web' || $target eq 'webgrade') {
521: if ($Apache::lonhomework::parsing_a_problem) {
522: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
523: return '';
524: }
525:
526: if (&is_inside_of($tagstack, "head")) {
527: &end_head(@_);
528: }
529: $currentstring =
530: &Apache::loncommon::start_page($Apache::londefdef::title,
531: $Apache::londefdef::head,
532: {'add_entries' => $token->[2],
533: 'no_title' => 1,
534: 'force_register' => 1});
535:
536: if ($env{'request.state'} ne 'published') {
537: $currentstring.=&Apache::lonmenu::constspaceform();
538: $currentstring.=(<<EDITBUTTON);
539: <form method="post">
540: <input type="submit" name="editmode" accesskey="e" value="Edit" />
541: </form>
542: <br />
543: EDITBUTTON
544: }
545: $currentstring.=&Apache::lonxml::message_location();
546: } elsif ($target eq 'tex') {
547: $currentstring = '\begin{document}';
548: }
549: return $currentstring;
550: }
551:
552: sub end_body {
553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
554: my $currentstring = &end_p(); # Close off unclosed <p>
555: if ($target eq 'web' || $target eq 'webgrade') {
556: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
557: } elsif ($target eq 'tex') {
558: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
559: }
560: return $currentstring;
561: }
562:
563: # \begin{center} causes a new paragprah spacing that looks odd inside
564: # of a table cell. Same at the end of a \center but with a slightly
565: # larger space .. hence center_correction and center_end_correction.
566: #
567: sub center_correction { return '\vspace*{-6 mm}'; }
568: sub center_end_correction { return '\vspace*{-7 mm}'; }
569:
570: #-- <center> tag (end tag required)
571: sub start_center {
572: my ($target,$token,$tagstack) = @_;
573: my $currentstring = &end_p(); # Close off any prior para.
574: if ($target eq 'web' || $target eq 'webgrade') {
575: $currentstring .= $token->[4];
576: } elsif ($target eq 'tex') {
577: if (&is_inside_of($tagstack, "table")) {
578: $currentstring .= ¢er_correction();
579: }
580: $currentstring .= '\begin{center}';
581: }
582: return $currentstring;
583: }
584:
585: sub end_center {
586: my ($target,$token,$tagstack) = @_;
587: my $currentstring = '';
588: if ($target eq 'web' || $target eq 'webgrade') {
589: $currentstring = $token->[2];
590: } elsif ($target eq 'tex') {
591: $currentstring = '\end{center}';
592: if (&is_inside_of($tagstack, "table")) {
593: $currentstring .= ¢er_end_correction();
594: }
595: }
596: return $currentstring;
597: }
598:
599: #-- <b> tag (end tag required)
600: # NOTE: In TeX mode disables internal <p>
601: sub start_b {
602: my ($target,$token) = @_;
603: my $currentstring = '';
604: if ($target eq 'web' || $target eq 'webgrade') {
605: $currentstring = $token->[4];
606: } elsif ($target eq 'tex') {
607: &disable_para();
608: $currentstring .= '\textbf{';
609: }
610: return $currentstring;
611: }
612:
613: sub end_b {
614: my ($target,$token) = @_;
615: my $currentstring = '';
616: if ($target eq 'web' || $target eq 'webgrade') {
617: $currentstring = $token->[2];
618: } elsif ($target eq 'tex') {
619: &enable_para();
620: $currentstring = '}';
621: }
622: return $currentstring;
623: }
624:
625: #-- <strong> tag (end tag required)
626: # NOTE: in TeX mode disables internal <p>
627: sub start_strong {
628: my ($target,$token) = @_;
629: my $currentstring = '';
630: if ($target eq 'web' || $target eq 'webgrade') {
631: $currentstring = $token->[4];
632: } elsif ($target eq 'tex') {
633: &disable_para();
634: $currentstring = '\textbf{';
635: }
636: return $currentstring;
637: }
638:
639: sub end_strong {
640: my ($target,$token) = @_;
641: my $currentstring = '';
642: if ($target eq 'web' || $target eq 'webgrade') {
643: $currentstring = $token->[2];
644: } elsif ($target eq 'tex') {
645: &enable_para();
646: $currentstring = '}';
647: }
648: return $currentstring;
649: }
650:
651: #-- <h1> tag (end tag required)
652: sub start_h1 {
653: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
654: my $currentstring = &end_p(); # Close off any prior para.
655: if ($target eq 'web' || $target eq 'webgrade') {
656: $currentstring .= $token->[4];
657: } elsif ($target eq 'tex') {
658: my $pre;
659: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
660: if ($align eq 'center') {
661: $pre='\begin{center}';
662: } elsif ($align eq 'left') {
663: $pre='\rlap{';
664: } elsif ($align eq 'right') {
665: $pre=' \hfill \llap{';
666: }
667: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
668: if (not defined $TeXsize) {$TeXsize="large";}
669: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
670: } elsif ($target eq 'meta') {
671: $currentstring.='<subject>';
672: &start_output($target);
673: }
674: return $currentstring;
675: }
676:
677: sub end_h1 {
678: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
679: my $currentstring = '';
680: if ($target eq 'web' || $target eq 'webgrade') {
681: $currentstring .= $token->[2];
682: } elsif ($target eq 'tex') {
683: my $post='\vskip 0 mm ';
684: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
685: if ($align eq 'center') {
686: $post='\end{center}';
687: } elsif ($align eq 'left') {
688: $post='} \hfill'.'\vskip 0 mm ';
689: } elsif ($align eq 'right') {
690: $post='}'.'\vskip 0 mm ';
691: }
692: $currentstring .= '}}'.$post;
693: } elsif ($target eq 'meta') {
694: &end_output($target);
695: $currentstring='</subject>';
696: }
697: return $currentstring;
698: }
699:
700: #-- <h2> tag
701: sub start_h2 {
702: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
703: my $currentstring = &end_p(); # Close off any prior para.
704: if ($target eq 'web' || $target eq 'webgrade') {
705: $currentstring .= $token->[4];
706: } elsif ($target eq 'tex') {
707: my $pre;
708: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
709: if ($align eq 'center') {
710: $pre='\begin{center}';
711: } elsif ($align eq 'left') {
712: $pre='\rlap{';
713: } elsif ($align eq 'right') {
714: $pre=' \hfill \llap{';
715: }
716: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
717: if (not defined $TeXsize) {$TeXsize="large";}
718: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
719: }
720: return $currentstring;
721: }
722:
723: sub end_h2 {
724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
725: my $currentstring = '';
726: if ($target eq 'web' || $target eq 'webgrade') {
727: $currentstring .= $token->[2];
728: } elsif ($target eq 'tex') {
729: my $post='\vskip 0 mm ';
730: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
731: if ($align eq 'center') {
732: $post='\end{center}';
733: } elsif ($align eq 'left') {
734: $post='} \hfill'.'\vskip 0 mm ';
735: } elsif ($align eq 'right') {
736: $post='}'.'\vskip 0 mm ';
737: }
738: $currentstring .= '}}'.$post;
739: }
740: return $currentstring;
741: }
742:
743: #-- <h3> tag
744: sub start_h3 {
745: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
746: my $currentstring = &end_p(); # Close off any prior para.
747: if ($target eq 'web' || $target eq 'webgrade') {
748: $currentstring .= $token->[4];
749: } elsif ($target eq 'tex') {
750: my $pre;
751: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
752: if ($align eq 'center') {
753: $pre='\begin{center}';
754: } elsif ($align eq 'left') {
755: $pre='\rlap{';
756: } elsif ($align eq 'right') {
757: $pre=' \hfill \llap{';
758: }
759: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
760: if (not defined $TeXsize) {$TeXsize="large";}
761: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
762: }
763: return $currentstring;
764: }
765:
766: sub end_h3 {
767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
768: my $currentstring = '';
769: if ($target eq 'web' || $target eq 'webgrade') {
770: $currentstring .= $token->[2];
771: } elsif ($target eq 'tex') {
772: my $post='\vskip 0 mm ';
773: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
774: if ($align eq 'center') {
775: $post='\end{center}';
776: } elsif ($align eq 'left') {
777: $post='} \hfill'.'\vskip 0 mm ';
778: } elsif ($align eq 'right') {
779: $post='}'.'\vskip 0 mm ';
780: }
781: $currentstring .= '}}'.$post;
782: }
783: return $currentstring;
784: }
785:
786: #-- <h4> tag
787: sub start_h4 {
788: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
789: my $currentstring = &end_p(); # Close off any prior para.
790: if ($target eq 'web' || $target eq 'webgrade') {
791: $currentstring .= $token->[4];
792: } elsif ($target eq 'tex') {
793: my $pre;
794: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
795: if ($align eq 'center') {
796: $pre='\begin{center}';
797: } elsif ($align eq 'left') {
798: $pre='\rlap{';
799: } elsif ($align eq 'right') {
800: $pre=' \hfill \llap{';
801: }
802: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
803: if (not defined $TeXsize) {$TeXsize="large";}
804: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
805: }
806: return $currentstring;
807: }
808:
809: sub end_h4 {
810: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
811: my $currentstring = '';
812: if ($target eq 'web' || $target eq 'webgrade') {
813: $currentstring .= $token->[2];
814: } elsif ($target eq 'tex') {
815: my $post='\vskip 0 mm ';
816: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
817: if ($align eq 'center') {
818: $post='\end{center}';
819: } elsif ($align eq 'left') {
820: $post='} \hfill'.'\vskip 0 mm ';
821: } elsif ($align eq 'right') {
822: $post='}'.'\vskip 0 mm ';
823: }
824: $currentstring .= '}}'.$post;
825: }
826: return $currentstring;
827: }
828:
829: #-- <h5> tag
830: sub start_h5 {
831: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
832: my $currentstring = &end_p(); # Close off any prior paras.
833: if ($target eq 'web' || $target eq 'webgrade') {
834: $currentstring .= $token->[4];
835: } elsif ($target eq 'tex') {
836: my $pre;
837: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
838: if ($align eq 'center') {
839: $pre='\begin{center}';
840: } elsif ($align eq 'left') {
841: $pre='\rlap{';
842: } elsif ($align eq 'right') {
843: $pre=' \hfill \llap{';
844: }
845: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
846: if (not defined $TeXsize) {$TeXsize="large";}
847: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
848: }
849: return $currentstring;
850: }
851:
852: sub end_h5 {
853: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
854: my $currentstring = '';
855: if ($target eq 'web' || $target eq 'webgrade') {
856: $currentstring .= $token->[2];
857: } elsif ($target eq 'tex') {
858: my $post='\vskip 0 mm ';
859: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
860: if ($align eq 'center') {
861: $post='\end{center}';
862: } elsif ($align eq 'left') {
863: $post='} \hfill'.'\vskip 0 mm ';
864: } elsif ($align eq 'right') {
865: $post='}'.'\vskip 0 mm ';
866: }
867: $currentstring .= '}}'.$post;
868: }
869: return $currentstring;
870: }
871:
872: #-- <h6> tag
873: sub start_h6 {
874: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
875: my $currentstring = &end_p(); # Close off any prior paras.
876: if ($target eq 'web' || $target eq 'webgrade') {
877: $currentstring .= $token->[4];
878: } elsif ($target eq 'tex') {
879: my $pre;
880: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
881: if ($align eq 'center') {
882: $pre='\begin{center}';
883: } elsif ($align eq 'left') {
884: $pre='\rlap{';
885: } elsif ($align eq 'right') {
886: $pre=' \hfill \llap{';
887: }
888: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
889: if (not defined $TeXsize) {$TeXsize="large";}
890: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
891: }
892: return $currentstring;
893: }
894:
895: sub end_h6 {
896: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
897: my $currentstring = '';
898: if ($target eq 'web' || $target eq 'webgrade') {
899: $currentstring .= $token->[2];
900: } elsif ($target eq 'tex') {
901: my $post='\vskip 0 mm ';
902: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
903: if ($align eq 'center') {
904: $post='\end{center}';
905: } elsif ($align eq 'left') {
906: $post='} \hfill'.'\vskip 0 mm ';
907: } elsif ($align eq 'right') {
908: $post='}'.'\vskip 0 mm ';
909: }
910: $currentstring .= '}}'.$post;
911: }
912: return $currentstring;
913: }
914:
915: #--- <cite> tag (end tag required)
916: sub start_cite {
917: my ($target,$token) = @_;
918: my $currentstring = '';
919: if ($target eq 'web' || $target eq 'webgrade') {
920: $currentstring .= $token->[4];
921: } elsif ($target eq 'tex') {
922: $currentstring .= '\textit{';
923: }
924: return $currentstring;
925: }
926:
927: sub end_cite {
928: my ($target,$token) = @_;
929: my $currentstring = '';
930: if ($target eq 'web' || $target eq 'webgrade') {
931: $currentstring .= $token->[2];
932: } elsif ($target eq 'tex') {
933: $currentstring .= '}';
934: }
935: return $currentstring;
936: }
937:
938: #-- <i> tag (end tag required)
939: sub start_i {
940: my ($target,$token) = @_;
941: my $currentstring = '';
942: if ($target eq 'web' || $target eq 'webgrade') {
943: $currentstring .= $token->[4];
944: } elsif ($target eq 'tex') {
945: $currentstring .= '\textit{';
946: }
947: return $currentstring;
948: }
949:
950: sub end_i {
951: my ($target,$token) = @_;
952: my $currentstring = '';
953: if ($target eq 'web' || $target eq 'webgrade') {
954: $currentstring .= $token->[2];
955: } elsif ($target eq 'tex') {
956: $currentstring .= '}';
957: }
958: return $currentstring;
959: }
960:
961: #-- <address> tag (end tag required)
962: sub start_address {
963: my ($target,$token) = @_;
964: my $currentstring = '';
965: if ($target eq 'web' || $target eq 'webgrade') {
966: $currentstring .= $token->[4];
967: } elsif ($target eq 'tex') {
968: $currentstring .= '\textit{';
969: }
970: return $currentstring;
971: }
972:
973: sub end_address {
974: my ($target,$token) = @_;
975: my $currentstring = '';
976: if ($target eq 'web' || $target eq 'webgrade') {
977: $currentstring .= $token->[2];
978: } elsif ($target eq 'tex') {
979: $currentstring .= '}';
980: }
981: return $currentstring;
982: }
983:
984: #-- <dfn> tag (end tag required)
985: sub start_dfn {
986: my ($target,$token) = @_;
987: my $currentstring = '';
988: if ($target eq 'web' || $target eq 'webgrade') {
989: $currentstring .= $token->[4];
990: } elsif ($target eq 'tex') {
991: $currentstring .= '\textit{';
992: }
993: return $currentstring;
994: }
995:
996: sub end_dfn {
997: my ($target,$token) = @_;
998: my $currentstring = '';
999: if ($target eq 'web' || $target eq 'webgrade') {
1000: $currentstring .= $token->[2];
1001: } elsif ($target eq 'tex') {
1002: $currentstring .= '}';
1003: }
1004: return $currentstring;
1005: }
1006:
1007: #-- <tt> tag (end tag required)
1008: sub start_tt {
1009: my ($target,$token) = @_;
1010: my $currentstring = '';
1011: if ($target eq 'web' || $target eq 'webgrade') {
1012: $currentstring .= $token->[4];
1013: } elsif ($target eq 'tex') {
1014: $currentstring .= '\texttt{';
1015: }
1016: return $currentstring;
1017: }
1018:
1019: sub end_tt {
1020: my ($target,$token) = @_;
1021: my $currentstring = '';
1022: if ($target eq 'web' || $target eq 'webgrade') {
1023: $currentstring .= $token->[2];
1024: } elsif ($target eq 'tex') {
1025: $currentstring .= '}';
1026: }
1027: return $currentstring;
1028: }
1029:
1030: #-- <kbd> tag (end tag required)
1031: sub start_kbd {
1032: my ($target,$token) = @_;
1033: my $currentstring = '';
1034: if ($target eq 'web' || $target eq 'webgrade') {
1035: $currentstring .= $token->[4];
1036: } elsif ($target eq 'tex') {
1037: $currentstring .= '\texttt{';
1038: }
1039: return $currentstring;
1040: }
1041:
1042: sub end_kbd {
1043: my ($target,$token) = @_;
1044: my $currentstring = '';
1045: if ($target eq 'web' || $target eq 'webgrade') {
1046: $currentstring .= $token->[2];
1047: } elsif ($target eq 'tex') {
1048: $currentstring .= '}';
1049: }
1050: return $currentstring;
1051: }
1052:
1053: #-- <code> tag (end tag required)
1054: sub start_code {
1055: my ($target,$token) = @_;
1056: my $currentstring = '';
1057: if ($target eq 'web' || $target eq 'webgrade') {
1058: $currentstring .= $token->[4];
1059: } elsif ($target eq 'tex') {
1060: $currentstring .= '\texttt{';
1061: }
1062: return $currentstring;
1063: }
1064:
1065: sub end_code {
1066: my ($target,$token) = @_;
1067: my $currentstring = '';
1068: if ($target eq 'web' || $target eq 'webgrade') {
1069: $currentstring .= $token->[2];
1070: } elsif ($target eq 'tex') {
1071: $currentstring .= '}';
1072: }
1073: return $currentstring;
1074: }
1075:
1076: #-- <em> tag (end tag required)
1077: sub start_em {
1078: my ($target,$token) = @_;
1079: my $currentstring = '';
1080: if ($target eq 'web' || $target eq 'webgrade') {
1081: $currentstring .= $token->[4];
1082: } elsif ($target eq 'tex') {
1083: $currentstring .= '\emph{';
1084: }
1085: return $currentstring;
1086: }
1087:
1088: sub end_em {
1089: my ($target,$token) = @_;
1090: my $currentstring = '';
1091: if ($target eq 'web' || $target eq 'webgrade') {
1092: $currentstring .= $token->[2];
1093: } elsif ($target eq 'tex') {
1094: $currentstring .= '}';
1095: }
1096: return $currentstring;
1097: }
1098:
1099: #-- <q> tag (end tag required)
1100: sub start_q {
1101: my ($target,$token) = @_;
1102: my $currentstring = '';
1103: if ($target eq 'web' || $target eq 'webgrade') {
1104: $currentstring .= $token->[4];
1105: } elsif ($target eq 'tex') {
1106: $currentstring .= '\emph{';
1107: }
1108: return $currentstring;
1109: }
1110:
1111: sub end_q {
1112: my ($target,$token) = @_;
1113: my $currentstring = '';
1114: if ($target eq 'web' || $target eq 'webgrade') {
1115: $currentstring .= $token->[2];
1116: } elsif ($target eq 'tex') {
1117: $currentstring .= '}';
1118: }
1119: return $currentstring;
1120: }
1121:
1122: # <p> is a bit strange since it does not require a closing </p>
1123: # However in latex, we must often output closing stuff to end
1124: # environments and {}'s etc. Therefore we do all the work
1125: # of figuring out the ending strings in the start tag processing,
1126: # and provide a mechanism to output the stop text external
1127: # to tag processing.
1128: #
1129: {
1130:
1131: my $closing_string = ''; # String required to close <p>
1132:
1133: # Some tags are <p> fragile meaning that <p> inside of them
1134: # does not work within TeX mode. This is managed via the
1135: # counter below:
1136: #
1137:
1138: my $para_disabled = 0;
1139:
1140: sub disable_para {
1141: $para_disabled++;
1142: }
1143: sub enable_para {
1144: $para_disabled--;
1145: }
1146:
1147:
1148: #-- <p> tag (end tag optional)
1149: #optional attribute - align="center|left|right"
1150: sub start_p {
1151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1152: my $currentstring = '';
1153: if ($target eq 'web' || $target eq 'webgrade') {
1154: $currentstring .= &end_p(); # close off prior para if in progress.
1155: $currentstring .= $token->[4];
1156: if (! ($currentstring =~ /\//)) {
1157: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1158: }
1159: } elsif ($target eq 'tex' && !$para_disabled) {
1160:
1161: $currentstring .= &end_p(); # close off prior para if in progress.
1162: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1163: if ($align eq 'center') {
1164: $currentstring .='\begin{center}\par ';
1165: $closing_string = '\end{center}';
1166: if (&is_inside_of($tagstack, "table")) {
1167: $currentstring = ¢er_correction().$currentstring;
1168: }
1169: } elsif ($align eq 'right') {
1170: $currentstring.="\n".'{\flushright ';
1171: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1172: $closing_string= "}\n";
1173: } elsif ($align eq 'left') {
1174: $currentstring.= "\n".'{\flushleft ';
1175: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1176: $closing_string = "}\n";
1177: } else {
1178: $currentstring.='\par ';
1179: if (&is_inside_of($tagstack, 'table')) {
1180: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1181: } else {
1182: $closing_string = '\strut\\\\\strut ';
1183: }
1184: }
1185:
1186: }
1187: return $currentstring;
1188: }
1189: #
1190: # End paragraph processing just requires that we output the
1191: # closing string that was saved and blank it.
1192: sub end_p {
1193: # Note only 'tex' mode uses disable_para and enable_para
1194: # so we don't need to know the target in the check below:
1195:
1196: if (!$para_disabled) {
1197: my $current_string = $closing_string;
1198: $closing_string = ''; # Not in a para anymore.
1199: return $current_string;
1200: } else {
1201: return '';
1202: }
1203:
1204: }
1205: }
1206: #-- <br> tag (end tag forbidden)
1207: sub start_br {
1208: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1209: my $currentstring = '';
1210: if ($target eq 'web' || $target eq 'webgrade') {
1211: $currentstring .= $token->[4];
1212: } elsif ($target eq 'tex') {
1213: my @tempo=@$tagstack;
1214: my $signal=0;
1215: # Not going to factor this to is_inside_of since that would require
1216: # multiple stack traversals.
1217: #
1218: for (my $i=$#tempo;$i>=0;$i--) {
1219: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1220: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1221: $signal=1;
1222: }
1223: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1224: $signal = 1;
1225: }
1226: }
1227: if ($signal eq 1) {
1228: $currentstring .= ' \vskip 0 mm ';
1229: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1230: $currentstring .= '\strut \\\\ \strut ';
1231: }
1232: }
1233: return $currentstring;
1234: }
1235:
1236: sub end_br {
1237: my ($target,$token) = @_;
1238: my $currentstring = '';
1239: if ($target eq 'web' || $target eq 'webgrade') {
1240: $currentstring .= $token->[2];
1241: }
1242: return $currentstring;
1243: }
1244:
1245: #-- <big> tag (end tag required)
1246: sub start_big {
1247: my ($target,$token) = @_;
1248: my $currentstring = '';
1249: if ($target eq 'web' || $target eq 'webgrade') {
1250: $currentstring .= $token->[4];
1251: } elsif ($target eq 'tex') {
1252: $currentstring .= '{\large ';
1253: }
1254: return $currentstring;
1255: }
1256:
1257: sub end_big {
1258: my ($target,$token) = @_;
1259: my $currentstring = '';
1260: if ($target eq 'web' || $target eq 'webgrade') {
1261: $currentstring .= $token->[2];
1262: } elsif ($target eq 'tex') {
1263: $currentstring .= '}';
1264: }
1265: return $currentstring;
1266: }
1267:
1268: #-- <small> tag (end tag required)
1269: sub start_small {
1270: my ($target,$token) = @_;
1271: my $currentstring = '';
1272: if ($target eq 'web' || $target eq 'webgrade') {
1273: $currentstring .= $token->[4];
1274: } elsif ($target eq 'tex') {
1275: $currentstring .= '{\footnotesize ';
1276: }
1277: return $currentstring;
1278: }
1279:
1280: sub end_small {
1281: my ($target,$token) = @_;
1282: my $currentstring = '';
1283: if ($target eq 'web' || $target eq 'webgrade') {
1284: $currentstring .= $token->[2];
1285: } elsif ($target eq 'tex') {
1286: $currentstring .= '}';
1287: }
1288: return $currentstring;
1289: }
1290:
1291: #-- <basefont> tag (end tag forbidden)
1292: sub start_basefont {
1293: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1294: my $currentstring = '';
1295: if ($target eq 'web' || $target eq 'webgrade') {
1296: $currentstring = $token->[4];
1297: } elsif ($target eq 'tex') {
1298: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1299: if (defined $basesize) {
1300: $currentstring = '{\\'.$basesize.' ';
1301: }
1302: }
1303: return $currentstring;
1304: }
1305:
1306: sub end_basefont {
1307: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1308: my $currentstring = '';
1309: if ($target eq 'web' || $target eq 'webgrade') {
1310: $currentstring = $token->[4];
1311: } elsif ($target eq 'tex') {
1312: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1313: if (defined $basesize) {
1314: $currentstring = '}';
1315: }
1316: }
1317: return $currentstring;
1318: }
1319:
1320: #-- <font> tag (end tag required)
1321: sub start_font {
1322: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1323: my $currentstring = '';
1324: if ($target eq 'web' || $target eq 'webgrade') {
1325: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1326: if ($face!~/symbol/i) {
1327: if (($env{'browser.fontenhance'} eq 'on') ||
1328: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1329: }
1330: $currentstring = $token->[4];
1331: } elsif ($target eq 'tex') {
1332: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1333: if (defined $fontsize) {
1334: $currentstring = '{\\'.$fontsize.' ';
1335: }
1336: }
1337: return $currentstring;
1338: }
1339:
1340: sub end_font {
1341: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1342: my $currentstring = '';
1343: if ($target eq 'web' || $target eq 'webgrade') {
1344: $currentstring = $token->[2];
1345: } elsif ($target eq 'tex') {
1346: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1347: if (defined $fontsize) {
1348: $currentstring = '}';
1349: }
1350: }
1351: return $currentstring;
1352: }
1353:
1354: #-- <strike> tag (end tag required)
1355: sub start_strike {
1356: my ($target,$token) = @_;
1357: my $currentstring = '';
1358: if ($target eq 'web' || $target eq 'webgrade') {
1359: $currentstring .= $token->[4];
1360: } elsif ($target eq 'tex') {
1361: &Apache::lonxml::startredirection();
1362: }
1363: return $currentstring;
1364: }
1365:
1366: sub end_strike {
1367: my ($target,$token) = @_;
1368: my $currentstring = '';
1369: if ($target eq 'web' || $target eq 'webgrade') {
1370: $currentstring .= $token->[2];
1371: } elsif ($target eq 'tex') {
1372: $currentstring=&Apache::lonxml::endredirection();
1373: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1374: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1375: $currentstring=~s/(\S)\s*$/$1\}/;
1376: }
1377: return $currentstring;
1378: }
1379:
1380: #-- <s> tag (end tag required)
1381: sub start_s {
1382: my ($target,$token) = @_;
1383: my $currentstring = '';
1384: if ($target eq 'web' || $target eq 'webgrade') {
1385: $currentstring .= $token->[4];
1386: } elsif ($target eq 'tex') {
1387: &Apache::lonxml::startredirection();
1388: }
1389: return $currentstring;
1390: }
1391:
1392: sub end_s {
1393: my ($target,$token) = @_;
1394: my $currentstring = '';
1395: if ($target eq 'web' || $target eq 'webgrade') {
1396: $currentstring .= $token->[2];
1397: } elsif ($target eq 'tex') {
1398: $currentstring=&Apache::lonxml::endredirection();
1399: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1400: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1401: $currentstring=~s/(\S)\s*$/$1\}/;
1402: }
1403: return $currentstring;
1404: }
1405:
1406: #-- <sub> tag (end tag required)
1407: sub start_sub {
1408: my ($target,$token) = @_;
1409: my $currentstring = '';
1410: if ($target eq 'web' || $target eq 'webgrade') {
1411: $currentstring .= $token->[4];
1412: } elsif ($target eq 'tex') {
1413: $currentstring .= '\ensuremath{_{';
1414: }
1415: return $currentstring;
1416: }
1417:
1418: sub end_sub {
1419: my ($target,$token) = @_;
1420: my $currentstring = '';
1421: if ($target eq 'web' || $target eq 'webgrade') {
1422: $currentstring .= $token->[2];
1423: } elsif ($target eq 'tex') {
1424: $currentstring .= '}}';
1425: }
1426: return $currentstring;
1427: }
1428:
1429: #-- <sup> tag (end tag required)
1430: sub start_sup {
1431: my ($target,$token) = @_;
1432: my $currentstring = '';
1433: if ($target eq 'web' || $target eq 'webgrade') {
1434: $currentstring .= $token->[4];
1435: } elsif ($target eq 'tex') {
1436: $currentstring .= '\ensuremath{^{';
1437: }
1438: return $currentstring;
1439: }
1440:
1441: sub end_sup {
1442: my ($target,$token) = @_;
1443: my $currentstring = '';
1444: if ($target eq 'web' || $target eq 'webgrade') {
1445: $currentstring .= $token->[2];
1446: } elsif ($target eq 'tex') {
1447: $currentstring .= '}}';
1448: }
1449: return $currentstring;
1450: }
1451:
1452: #-- <hr> tag (end tag forbidden)
1453: sub start_hr {
1454: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1455: my $currentstring = &end_p(); # End enclosing para.
1456: if ($target eq 'web' || $target eq 'webgrade') {
1457: $currentstring .= $token->[4];
1458: } elsif ($target eq 'tex') {
1459: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1460: if (defined $LaTeXwidth) {
1461: if ($LaTeXwidth=~/^%/) {
1462: substr($LaTeXwidth,0,1)='';
1463: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1464: }
1465: } else {
1466: $LaTeXwidth ='0.9\textwidth';
1467: }
1468: my ($pre,$post);
1469: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1470: if (($align eq 'center') || (not defined $align)) {
1471: $pre=''; $post='';
1472: } elsif ($align eq 'left') {
1473: $pre='\rlap{'; $post='} \hfill';
1474: } elsif ($align eq 'right') {
1475: $pre=' \hfill \llap{'; $post='}';
1476: }
1477: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1478: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1479: }
1480: return $currentstring;
1481: }
1482:
1483: sub end_hr {
1484: my ($target,$token) = @_;
1485: my $currentstring = '';
1486: if ($target eq 'web' || $target eq 'webgrade') {
1487: $currentstring .= $token->[2];
1488: }
1489: return $currentstring;
1490: }
1491:
1492: #-- <div> tag (end tag required)
1493: {
1494:
1495: # Since div can be nested, the stack below is used
1496: # in 'tex' mode to store the ending strings
1497: # for the div stack.
1498:
1499: my @div_end_stack;
1500:
1501: sub start_div {
1502: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1503: my $currentstring = &end_p(); # Close enclosing para.
1504: if ($target eq 'web' || $target eq 'webgrade') {
1505: $currentstring .= $token->[4];
1506: }
1507: if ($target eq 'tex') {
1508: # 4 possible alignments: left, right, center, and -missing-.
1509:
1510: my $endstring = '';
1511:
1512: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1513: $safeeval, undef, 1));
1514: if ($align eq 'center') {
1515: $currentstring .= '\begin{center}';
1516: $endstring = '\end{center}';
1517: if (&is_inside_of($tagstack, "table")) {
1518: $currentstring = ¢er_correction().$currentstring;
1519: }
1520: }
1521: elsif ($align eq 'right') {
1522: $currentstring .= '\begin{flushright}';
1523: $endstring .= '\end{flushright}';
1524: } elsif ($align eq 'left') {
1525: $currentstring .= '\begin{flushleft}';
1526: $endstring = '\end{flushleft}';
1527: } else {
1528:
1529: }
1530: $currentstring .= "\n"; # For human readability.
1531: $endstring = "\n$endstring\n"; # For human readability
1532: push(@div_end_stack, $endstring);
1533: }
1534: return $currentstring;
1535: }
1536:
1537: sub end_div {
1538: my ($target,$token) = @_;
1539: my $currentstring = '';
1540: if ($target eq 'web' || $target eq 'webgrade') {
1541: $currentstring .= $token->[2];
1542: }
1543: if ($target eq 'tex') {
1544: my $endstring = pop @div_end_stack;
1545: $currentstring .= $endstring;
1546: }
1547: return $currentstring;
1548: }
1549: }
1550:
1551: #-- <a> tag (end tag required)
1552: sub start_a {
1553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1554: my $currentstring = '';
1555: if ($target eq 'web' || $target eq 'webgrade') {
1556: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1557: undef,1);
1558: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1559: } elsif ($target eq 'tex') {
1560: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1561: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1562: if ($a=~/\S/) {
1563: $a=~s/([^\\])%/$1\\\%/g;
1564: $currentstring .= '\ref{URI: '.$a.'}';
1565: } elsif ($b=~/\S/) {
1566: $currentstring .= '\ref{Anchor: '.$b.'}';
1567: } else {
1568: $currentstring.='';
1569: }
1570: }
1571: return $currentstring;
1572: }
1573:
1574: sub end_a {
1575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1576: my $currentstring = '';
1577: if ($target eq 'web' || $target eq 'webgrade') {
1578: $currentstring .= $token->[2];
1579: }
1580: return $currentstring;
1581: }
1582:
1583: #-- <li> tag (end tag optional)
1584: sub start_li {
1585: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1586: my $currentstring = '';
1587: if ($target eq 'web' || $target eq 'webgrade') {
1588: $currentstring = $token->[4];
1589: } elsif ($target eq 'tex') {
1590: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1591: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1592: #FIXME need to support types i and I
1593: if ($type=~/disc/) {
1594: $currentstring .= ' \item[$\bullet$] ';
1595: } elsif ($type=~/circle/) {
1596: $currentstring .= ' \item[$\circ$] ';
1597: } elsif ($type=~/square/) {
1598: $currentstring .= ' \item[$\diamond$] ';
1599: } elsif ($type eq '1') {
1600: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1601: } elsif ($type eq 'A') {
1602: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1603: } elsif ($type eq 'a') {
1604: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1605: } elsif ($value ne '') {
1606: $currentstring .= ' \item['.$value.'] ';
1607: } else {
1608: $currentstring .= ' \item ';
1609: }
1610: $Apache::londefdef::list_index++;
1611: }
1612: return $currentstring;
1613: }
1614:
1615: sub end_li {
1616: my ($target,$token) = @_;
1617: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1618: if ($target eq 'web' || $target eq 'webgrade') {
1619: $currentstring .= $token->[2];
1620: }
1621: return $currentstring;
1622: }
1623:
1624: #-- <u> tag (end tag required)
1625: sub start_u {
1626: my ($target,$token) = @_;
1627: my $currentstring = '';
1628: if ($target eq 'web' || $target eq 'webgrade') {
1629: $currentstring .= $token->[4];
1630: } elsif ($target eq 'tex') {
1631: &Apache::lonxml::startredirection();
1632: }
1633: return $currentstring;
1634: }
1635:
1636: sub end_u {
1637: my ($target,$token) = @_;
1638: my $currentstring = '';
1639: if ($target eq 'web' || $target eq 'webgrade') {
1640: $currentstring .= $token->[2];
1641: } elsif ($target eq 'tex') {
1642: $currentstring=&Apache::lonxml::endredirection();
1643: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1644: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1645: $currentstring=~s/(\S)\s*$/$1\}/;
1646: }
1647: return $currentstring;
1648: }
1649:
1650: #-- <ul> tag (end tag required)
1651: sub start_ul {
1652: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1653: my $currentstring = &end_p(); # Close off enclosing list.
1654: if ($target eq 'web' || $target eq 'webgrade') {
1655: $currentstring .= $token->[4];
1656: } elsif ($target eq 'tex') {
1657: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1658: $Apache::londefdef::list_index=0;
1659: if ($TeXtype eq 'disc') {
1660: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1661: '\renewcommand{\labelitemii}{$\bullet$}'.
1662: '\renewcommand{\labelitemiii}{$\bullet$}'.
1663: '\renewcommand{\labelitemiv}{$\bullet$}';
1664: } elsif ($TeXtype eq 'circle') {
1665: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1666: '\renewcommand{\labelitemii}{$\circ$}'.
1667: '\renewcommand{\labelitemiii}{$\circ$}'.
1668: '\renewcommand{\labelitemiv}{$\circ$}';
1669: } elsif ($TeXtype eq 'square') {
1670: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1671: '\renewcommand{\labelitemii}{$\diamond$}'.
1672: '\renewcommand{\labelitemiii}{$\diamond$}'.
1673: '\renewcommand{\labelitemiv}{$\diamond$}';
1674: }
1675: $currentstring .= '\strut \begin{itemize}';
1676: }
1677: return $currentstring;
1678: }
1679:
1680: sub end_ul {
1681: my ($target,$token) = @_;
1682: my $currentstring = '';
1683: if ($target eq 'web' || $target eq 'webgrade') {
1684: $currentstring = $token->[2];
1685: } elsif ($target eq 'tex') {
1686: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1687: '\renewcommand{\labelitemii}{$\bullet$}'.
1688: '\renewcommand{\labelitemiii}{$\bullet$}'.
1689: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1690: }
1691: return $currentstring;
1692: }
1693:
1694: #-- <menu> tag (end tag required)
1695: sub start_menu {
1696: my ($target,$token) = @_;
1697: my $currentstring = '';
1698: if ($target eq 'web' || $target eq 'webgrade') {
1699: $currentstring = $token->[4];
1700: } elsif ($target eq 'tex') {
1701: $currentstring = " \\begin{itemize} ";
1702: }
1703: return $currentstring;
1704: }
1705:
1706: sub end_menu {
1707: my ($target,$token) = @_;
1708: my $currentstring = '';
1709: if ($target eq 'web' || $target eq 'webgrade') {
1710: $currentstring = $token->[2];
1711: } elsif ($target eq 'tex') {
1712: $currentstring = " \\end{itemize}";
1713: }
1714: return $currentstring;
1715: }
1716:
1717: #-- <dir> tag (end tag required)
1718: sub start_dir {
1719: my ($target,$token) = @_;
1720: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1721: if ($target eq 'web' || $target eq 'webgrade') {
1722: $currentstring .= $token->[4];
1723: } elsif ($target eq 'tex') {
1724: $currentstring .= " \\begin{itemize} ";
1725: }
1726: return $currentstring;
1727: }
1728:
1729: sub end_dir {
1730: my ($target,$token) = @_;
1731: my $currentstring = '';
1732: if ($target eq 'web' || $target eq 'webgrade') {
1733: $currentstring = $token->[2];
1734: } elsif ($target eq 'tex') {
1735: $currentstring = " \\end{itemize}";
1736: }
1737: return $currentstring;
1738: }
1739:
1740: #-- <ol> tag (end tag required)
1741: sub start_ol {
1742: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1743: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1744: if ($target eq 'web' || $target eq 'webgrade') {
1745: $currentstring .= $token->[4];
1746: } elsif ($target eq 'tex') {
1747: $Apache::londefdef::list_index=0;
1748: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1749: if ($type eq '1') {
1750: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1751: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1752: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1753: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1754: } elsif ($type eq 'A') {
1755: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1756: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1757: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1758: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1759: } elsif ($type eq 'a') {
1760: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1761: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1762: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1763: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1764: } elsif ($type eq 'i') {
1765: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1766: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1767: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1768: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1769: } elsif ($type eq 'I') {
1770: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1771: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1772: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1773: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1774: }
1775: $currentstring .= '\strut \begin{enumerate}';
1776: }
1777: return $currentstring;
1778: }
1779:
1780: sub end_ol {
1781: my ($target,$token) = @_;
1782: my $currentstring = '';
1783: if ($target eq 'web' || $target eq 'webgrade') {
1784: $currentstring = $token->[2];
1785: } elsif ($target eq 'tex') {
1786: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1787: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1788: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1789: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1790: }
1791: return $currentstring;
1792: }
1793:
1794: #-- <dl> tag (end tag required)
1795: sub start_dl {
1796: my ($target,$token) = @_;
1797: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1798: if ($target eq 'web' || $target eq 'webgrade') {
1799: $currentstring .= $token->[4];
1800: } elsif ($target eq 'tex') {
1801: $currentstring .= '\begin{description}';
1802: $Apache::londefdef::DL++;
1803: push(@Apache::londefdef::description,[]);
1804: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1805: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1806: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1807: }
1808: return $currentstring;
1809: }
1810:
1811: sub end_dl {
1812: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1813: my $currentstring = '';
1814: if ($target eq 'web' || $target eq 'webgrade') {
1815: $currentstring = $token->[2];
1816: } elsif ($target eq 'tex') {
1817: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1818: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1819: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1820: $currentstring.=' '.$element.' ';
1821: }
1822: pop(@Apache::londefdef::description);
1823: $currentstring.='\end{description}';
1824: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1825: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1826: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1827: $Apache::londefdef::DL--;
1828: }
1829: return $currentstring;
1830: }
1831:
1832: #-- <dt> tag (end tag optional)
1833: sub start_dt {
1834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1835: my $currentstring='';
1836: if ($target eq 'web' || $target eq 'webgrade') {
1837: $currentstring = $token->[4];
1838: } elsif ($target eq 'tex') {
1839: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1840: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1841: &Apache::lonxml::startredirection();
1842: $Apache::londefdef::DT[-1]++;
1843: $Apache::londefdef::seenDT[-1]=1;
1844: }
1845: return $currentstring;
1846: }
1847:
1848: sub end_dt {
1849: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1850: my $currentstring = '';
1851: if ($target eq 'web' || $target eq 'webgrade') {
1852: $currentstring = $token->[2];
1853: } elsif ($target eq 'tex') {
1854: if ($Apache::londefdef::DT[-1]) {
1855: my $data=&item_cleanup();
1856: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1857: $Apache::londefdef::DT[-1]--;
1858: }
1859: }
1860: return $currentstring;
1861: }
1862:
1863: sub item_cleanup {
1864: my $item=&Apache::lonxml::endredirection();
1865: $item=~s/\\begin{center}//g;
1866: $item=~s/\\end{center}//g;
1867: return $item;
1868: }
1869:
1870: #-- <dd> tag (end tag optional)
1871: sub start_dd {
1872: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1873: my $currentstring = '';
1874: if ($target eq 'web' || $target eq 'webgrade') {
1875: $currentstring = $token->[4];
1876: } elsif ($target eq 'tex') {
1877: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1878: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1879: if (!$Apache::londefdef::seenDT[-1]) {
1880: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1881: }
1882: push(@{$Apache::londefdef::description[-1]},'');
1883: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1884: $Apache::londefdef::DD[-1]++;
1885: &Apache::lonxml::startredirection();
1886: }
1887: return $currentstring;
1888: }
1889:
1890: sub end_dd {
1891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1892: my $currentstring = '';
1893: if ($target eq 'web' || $target eq 'webgrade') {
1894: $currentstring = $token->[2];
1895: } elsif ($target eq 'tex') {
1896: $Apache::londefdef::description[-1]->[-1].=
1897: &Apache::lonxml::endredirection().' \vskip 0mm ';
1898: $Apache::londefdef::DD[-1]--;
1899: }
1900: return $currentstring;
1901: }
1902:
1903: #-- <table> tag (end tag required)
1904: # <table> also ends any prior <p> that is not closed.
1905: # but, unless I allow <p>'s to nest, that's the
1906: # only way I could think of to allow <p> in
1907: # <tr> <th> bodies
1908: #
1909: #list of supported attributes: border,width,TeXwidth
1910: sub start_table {
1911: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1912: my $textwidth = '';
1913: my $currentstring = &end_p();
1914: if ($target eq 'web' || $target eq 'webgrade') {
1915: $currentstring .= $token->[4];
1916: } elsif ($target eq 'tex') {
1917: my $aa = {};
1918: push @Apache::londefdef::table, $aa;
1919: $Apache::londefdef::table[-1]{'row_number'} = -1;
1920: #maximum table's width (default coincides with text line length)
1921: if ($#Apache::londefdef::table==0) {
1922: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
1923: $textwidth=~/(\d+\.?\d*)/;
1924: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1925: } else {
1926: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1927: #the maximum width of nested table is determined by LATeX width of parent cell
1928: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1929: } else {
1930: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1931: $textwidth=$Apache::londefdef::table[-2]{'width'};
1932: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1933: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1934: }
1935: }
1936: }
1937:
1938: # width either comes forced from the TeXwidth or the width parameters.
1939: # in either case it can be a percentage or absolute width.
1940: # in the width case we ignore absolute width
1941: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1942: if (!defined($TeXwidth)) {
1943: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
1944: $safeeval,undef,1);
1945: if ($htmlwidth =~ /%/) {
1946: $TeXwidth = $htmlwidth;
1947: } else {
1948: $TeXwidth = $textwidth;
1949: }
1950: } else {
1951: $Apache::londefdef::table[-1]{'forcedtablewidth'} = 1;
1952: }
1953: if ($TeXwidth=~/%/) {
1954: $Apache::londefdef::table[-1]{'percent'}=1;
1955: $TeXwidth=~/(\d+)/;
1956: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1957: } else {
1958: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1959: }
1960: # In the end, however the table width cannot be wider than $textwidth...
1961:
1962: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
1963: $Apache::londefdef::table[-1]{'width'} = $textwidth;
1964: }
1965:
1966: #table's border
1967: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1968: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1969: unless (defined $border) { $border = 0; }
1970: if ($border) {
1971: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1972: $Apache::londefdef::table[-1]{'vinc'} = '&';
1973: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1974: } else {
1975: $Apache::londefdef::table[-1]{'hinc'} = '';
1976: $Apache::londefdef::table[-1]{'vinc'} = '&';
1977: $Apache::londefdef::table[-1]{'vvinc'} = '';
1978: }
1979: if ($#Apache::londefdef::table==0) {
1980: # Note that \newline seems to destroy the alignment envs.
1981: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1982: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
1983: }
1984: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1985: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1986: $Apache::londefdef::table[-1]{'objectlen'}=[];
1987: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1988: $Apache::londefdef::table[-1]{'maxlen'}=[];
1989: $Apache::londefdef::table[-1]{'minlen'}=[];
1990: $Apache::londefdef::table[-1]{'content'}=[];
1991: $Apache::londefdef::table[-1]{'align'}=[];
1992: $currentstring.='\keephidden{NEW TABLE ENTRY}';
1993:
1994:
1995: }
1996: return $currentstring;
1997: }
1998:
1999: sub end_table {
2000: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2001: my $currentstring = '';
2002: if ($target eq 'web' || $target eq 'webgrade') {
2003: $currentstring = $token->[2];
2004: } elsif ($target eq 'tex') {
2005: my $inmemory = '';
2006: my $output = '';
2007: my $WARNING='';
2008: #width of columns from TeXwidth attributes
2009:
2010: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2011: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2012: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2013: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2014: }
2015: }
2016: }
2017: #free space and number of empty columns
2018: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2019: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2020: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2021: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2022: $empty_columns++;
2023: } else {
2024: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2025: }
2026: }
2027: #boundaries for contents columns
2028: my @min_len=();#columns can not be narrower
2029: my @max_len=();#maximum length of column
2030: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2031: my ($localmin,$localmax)=(0,0);
2032: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2033: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2034: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2035: }
2036: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2037: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2038: }
2039: }
2040: push @min_len, $localmin;
2041: push @max_len, $localmax;
2042: }
2043: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2044: my $localmin=0,;
2045: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2046: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2047: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2048: }
2049: }
2050: if ($max_len[$jn]<$localmin) {
2051: $max_len[$jn]=$localmin;
2052: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2053: }#object size is bigger
2054: if ($min_len[$jn]<$localmin) {
2055: $min_len[$jn]=$localmin;
2056: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2057: }#object size is bigger
2058: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2059: $min_len[$jn]=0;
2060: $max_len[$jn]=0;
2061: }
2062: }
2063: #final adjustment of column width
2064: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2065: my @adjust=();
2066: #step 1. adjustment by maximum value
2067: my $space_neeeded=0;
2068: for (my $jn=0;$jn<=$#max_len;$jn++) {
2069: $space_neeeded=$space_neeeded+$max_len[$jn];
2070: }
2071: if ($space_neeeded<=$available_space) {
2072: for (my $jn=0;$jn<=$#max_len;$jn++) {
2073: if ($fwidth[$jn]==0) {
2074: $fwidth[$jn]=$max_len[$jn];
2075: }
2076: }
2077: } else {
2078: #step 2. adjustment by minimum value (estimation)
2079: $space_neeeded=0;
2080: for (my $jn=0;$jn<=$#min_len;$jn++) {
2081: $space_neeeded+=$min_len[$jn];
2082: }
2083: if ($space_neeeded>$available_space) {
2084: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2085: for (my $jn=0;$jn<=$#max_len;$jn++) {
2086: if ($fwidth[$jn]==0) {
2087: $fwidth[$jn]=$min_len[$jn];
2088: }
2089: }
2090: #check if we have objects which can be scaled
2091: my $how_many_to_scale=0;
2092: my @to_scale=();
2093: for (my $jn=0;$jn<=$#max_len;$jn++) {
2094: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2095: $how_many_to_scale++;
2096: push @to_scale, $jn;
2097: }
2098: }
2099: if ($how_many_to_scale>0) {
2100: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
2101: foreach my $jn (@to_scale) {
2102: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2103: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2104: if ($1 ne '') {
2105: my $current_length=&recalc($1);
2106: $current_length=~/(\d+\.?\d*)/;
2107: $current_length=$current_length-$space_to_adjust;
2108: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2109: }
2110: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2111: if ($1 ne '') {
2112: my $current_length=$1;
2113: $current_length=$current_length-$space_to_adjust;
2114: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2115: }
2116: }
2117: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2118: }
2119: }
2120: } else {
2121: #step 3. adjustment over minimal + corrections
2122: my $enlarge_coef=$available_space/$space_neeeded;
2123: my $acsessive=0;
2124: for (my $jn=0;$jn<=$#min_len;$jn++) {
2125: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2126: if ($adjust[$jn]>$max_len[$jn]) {
2127: $fwidth[$jn]=$max_len[$jn];
2128: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2129: $adjust[$jn]=0;
2130: }
2131: }
2132: if ($acsessive>0) {
2133: #we have an excess of space and can redistribute it
2134: my $notempty_columns=0;
2135: for (my $jn=0;$jn<=$#min_len;$jn++) {
2136: if ($adjust[$jn]!=0) {
2137: $notempty_columns++;
2138: }
2139: }
2140: my $per_column=$acsessive/$notempty_columns;
2141: for (my $jn=0;$jn<=$#min_len;$jn++) {
2142: if ($adjust[$jn]!=0) {
2143: $adjust[$jn]+=$per_column;
2144: $fwidth[$jn]=$adjust[$jn];
2145: }
2146: }
2147: } else {
2148: for (my $jn=0;$jn<=$#min_len;$jn++) {
2149: $fwidth[$jn]=$adjust[$jn];
2150: }
2151: }
2152: }
2153: }
2154: #use all available width if it is defined in % or as TeXwidth
2155: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2156: my $current=0;
2157: for (my $i=0;$i<=$#fwidth;$i++) {
2158: $current+=$fwidth[$i];
2159: }
2160: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2161: for (my $i=0;$i<=$#fwidth;$i++) {
2162: $fwidth[$i]*=$coef;
2163: }
2164: }
2165: #removing of empty columns if allowed
2166: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2167: if ($permission eq 'yes') {
2168: my @cleaned_table=();
2169: my @cleaned_header=();
2170: my $colind=0;
2171: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2172: if ($fwidth[$jn]!=0) {
2173: #we need to copy column
2174: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2175: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2176: $cleaned_header[$colind]=$fwidth[$jn];
2177: }
2178: $colind++;
2179: }
2180: }
2181: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2182: @fwidth=@cleaned_header;
2183: }
2184: #construct header of the table
2185: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2186: for (my $in=0;$in<=$#fwidth;$in++) {
2187: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2188: }
2189: $header_of_table .= '}';
2190: #fill the table
2191: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2192: my $have_rowspan = 0;
2193: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2194:
2195: #-----------------------------------------------------------
2196: # I think this order of doing things will ensure that
2197: # single rowspan, columspan and combined row/colspans will
2198: # work correctly. LaTeX is delicate here.
2199: # RF.
2200:
2201: # Start a rowspan if necessary:
2202:
2203: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2204: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2205: #
2206: # Do the appropriate magic if this has a colspan
2207: #
2208:
2209: if ($colspan > 1) {
2210: my $spanwidth = 0;
2211: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2212: $spanwidth += $fwidth[$spancol];
2213: }
2214: $output .= '\multicolumn{'.
2215: $colspan
2216: ."}";
2217: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2218: $output .= '{|c|}{';
2219: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2220: $output .= '{|r|}{';
2221: }
2222: else {
2223: $output .= "{|p{$spanwidth mm}|}{";
2224: }
2225:
2226: }
2227:
2228: # Rowspan... if colspan is 1, and there's an alignment we'll need
2229: # to kick in a multicolumn in order to get the alignment spec.
2230: # this must precede the multirow or LaTex gets quite upset.
2231: # Naturally if colspan > 1 we've already done that above ^
2232: #
2233: my $multirow_aligned = 0;
2234: if ($rowspan > 1) {
2235: if ($colspan == 1) {
2236: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2237: $output .= '\multicolumn{1}{|c|}{';
2238: $multirow_aligned = 1;
2239: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2240: $output .= '\multicolumn{1}{|r|}{';
2241: $multirow_aligned = 1;
2242: }
2243: }
2244: $have_rowspan++;
2245: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2246: #
2247: # If we did not throw in a multicolumn to align, then add
2248: # an extra {
2249: # so we close correctly without having to keep additional state
2250: # around
2251: #
2252: if (!$multirow_aligned) {
2253: $output .= '{';
2254: }
2255: }
2256: if (($rowspan eq '^') || ($rowspan eq '_')) {
2257: $have_rowspan++;
2258: }
2259: #--------------------------------------------------------------
2260:
2261:
2262: # For right and center alignment of single cells.
2263: # we are going to use a multicolumn with a span of 1 to specify alignment.
2264: #
2265: if ($colspan == 1 && $rowspan == 1) {
2266: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2267: $output .= '\multicolumn{1}{|c|}{';
2268: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2269: $output .= '\multicolumn{1}{|r|}{';
2270: }
2271: }
2272:
2273: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2274:
2275: if (($colspan == 1 && $rowspan == 1) &&
2276: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2277: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2278: $output .= '}';
2279: }
2280:
2281: # Close off any open multirow:
2282:
2283: if ($rowspan > 1) {
2284: $output .= '}}';
2285: }
2286: # Close off the colspan...
2287: #
2288: if ($colspan > 1) {
2289: $output .= '}';
2290: $jn += $colspan-1; # Adjust for number of rows really left.
2291: }
2292: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2293: }
2294: # If have_rowspan > 0, and borders are on, then
2295: # we need to do more than put an \hline at the bottom of row.
2296: # we need to do the appropriate \cline to ensure that
2297: # the spanned rows don't have \hlines through them.
2298:
2299: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2300: $output .= ' \\\\ ';
2301: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2302: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2303: if ($rowspan ne "^") {
2304: if (($rowspan <= 1) || ($rowspan eq '_')) {
2305: my $column = $jn+1;
2306: $output .= '\cline{'.$column.'-'.$column.'} ';
2307: }
2308: }
2309: }
2310:
2311: } else {
2312: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2313: }
2314: }
2315: # Note that \newline destroys alignment env's produced by e.g. <div>
2316: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2317: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2318: if ($#Apache::londefdef::table > 0) {
2319: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2320: # Figure out max/and min width by summing us and then
2321: # apply that to the current column of the table we nest in
2322: # if it's larger than the current width or the current width
2323: # is undefined.
2324: #
2325: my $min_nested_width = 0;
2326: my $max_nested_width = 0;
2327: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2328: $min_nested_width += $min_len[$col];
2329: $max_nested_width += $max_len[$col];
2330:
2331: }
2332: # Fudge in an extra 5 mm for borders etc:
2333:
2334: $min_nested_width += 5;
2335: $max_nested_width += 5;
2336:
2337: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2338: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2339: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2340: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2341: }
2342: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2343: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2344: }
2345:
2346: pop @Apache::londefdef::table;
2347: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2348: } else {
2349: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2350: pop @Apache::londefdef::table;
2351: undef @Apache::londefdef::table;
2352: }
2353: }
2354: return $currentstring;
2355: }
2356:
2357: #-- <tr> tag (end tag optional)
2358: sub start_tr {
2359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2360: my $currentstring = '';
2361: if ($target eq 'web' || $target eq 'webgrade') {
2362: $currentstring = $token->[4];
2363: } elsif ($target eq 'tex') {
2364: $Apache::londefdef::table[-1]{'row_number'}++;
2365: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2366: if ($alignchar ne '') {
2367: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2368: } else {
2369: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2370: }
2371: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2372: #
2373: # Need to save the number of table columns to preserve the max # columns.
2374: #
2375: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2376: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2377: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2378: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2379: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2380: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2381: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2382: }
2383: return $currentstring;
2384: }
2385:
2386: sub end_tr {
2387: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2388: my $currentstring = &end_p(); # Close any pending <p> in the row.
2389: if ($target eq 'web' || $target eq 'webgrade') {
2390: $currentstring .= $token->[2];
2391: } elsif ($target eq 'tex') {
2392: if ($Apache::londefdef::TD_redirection) {
2393: &end_td_tex($parstack,$parser,$safeeval);
2394: }
2395: # Counter columns must be the maximum number of columns seen
2396: # in the table so far so:
2397: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2398: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2399: }
2400:
2401:
2402:
2403: }
2404: return $currentstring;
2405: }
2406:
2407: #-- <td> tag (end tag optional)
2408: sub start_td {
2409: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2410: my $currentstring = '';
2411: if ($target eq 'web' || $target eq 'webgrade') {
2412: $currentstring = $token->[4];
2413: } elsif ($target eq 'tex') {
2414: $Apache::londefdef::TD_redirection = 1;
2415: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2416: }
2417: return $currentstring;
2418: }
2419:
2420: sub tag_check {
2421: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2422: my @ar=@$parstack;
2423: for (my $i=$#ar-1;$i>=0;$i--) {
2424: if (lc($$tagstack[$i]) eq $good_tag) {
2425: &start_td_tex($parstack,$parser,$safeeval);
2426: last;
2427: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2428: splice @ar, $i+1;
2429: &end_td_tex(\@ar,$parser,$safeeval);
2430: &start_td_tex($parstack,$parser,$safeeval);
2431: last;
2432: }
2433: }
2434: return '';
2435: }
2436:
2437: sub start_td_tex {
2438: my ($parstack,$parser,$safeeval) = @_;
2439: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2440: if ($alignchar eq '') {
2441: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2442: }
2443: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2444: $Apache::londefdef::table[-1]{'counter_columns'}++;
2445: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2446: if (defined $TeXwidth) {
2447: my $current_length=&recalc($TeXwidth);
2448: $current_length=~/(\d+\.?\d*)/;
2449: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2450: }
2451: &Apache::lonxml::startredirection();
2452: return '';
2453: }
2454:
2455: sub end_td_tex {
2456: my ($parstack,$parser,$safeeval) = @_;
2457: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2458: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2459: my $data = &Apache::lonxml::endredirection();
2460:
2461: # The rowspan array of the table indicates which cells are part of a span.
2462: # n indicates the start of a span set of n rows.
2463: # ^ indicates a cell that continues a span set.
2464: # _ indicates the cell is at the bottom of a span set.
2465: # If this and subsequent cells are part of a rowspan, we must
2466: # push along the row until we find one that is not.
2467:
2468: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2469: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2470: # Part of a span.
2471: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2472: $current_column++;
2473: }
2474: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2475:
2476:
2477: # Get the column and row spans.
2478: # Colspan can be done via \multicolumn if I can figure out the data structs.
2479:
2480: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2481: if (!$colspan) {
2482: $colspan = 1;
2483: }
2484:
2485: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2486: if (!$rowspan) {
2487: $rowspan = 1;
2488: }
2489:
2490:
2491:
2492: for (my $c = 0; $c < $colspan; $c++) {
2493: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2494: for (my $i = 1; $i < $rowspan; $i++) {
2495: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2496: if ($i == ($rowspan-1)) {
2497: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2498: }
2499: }
2500: }
2501:
2502: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2503: if (defined $TeXwidth) {
2504: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2505: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2506: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2507: } else {
2508: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2509: my $garbage_data=$data;
2510: my $fwidth=0;
2511: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2512: my $current_length=&recalc($1);
2513: $current_length=~/(\d+\.?\d*)/;
2514: if ($fwidth<$1) {$fwidth=$1;}
2515: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2516: }
2517: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2518: my $current_length=$1;
2519: if ($fwidth<$current_length) {$fwidth=$current_length;}
2520: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2521: }
2522: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2523: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2524: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2525: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2526: } elsif ($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)*/) {
2527: my $garbage_data=$data;
2528: my $fwidth=0;
2529: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2530: my $current_length=&recalc($1);
2531: $current_length=~/(\d+\.?\d*)/;
2532: if ($fwidth<$1) {$fwidth=$1;}
2533: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2534: }
2535: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2536: my $current_length=&recalc($1);
2537: $current_length=~/(\d+\.?\d*)/;
2538: if ($fwidth<$1) {$fwidth=$1;}
2539: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2540: }
2541: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2542: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2543: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2544: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2545: $data=~s/\\\\\s*$//;
2546: } else {
2547: $data=~s/^\s+(\S.*)/$1/;
2548: $data=~s/(.*\S)\s+$/$1/;
2549: $data=~s/(\s)+/$1/;
2550: my ($current_length,$min_length)=(0,0);
2551: if ($data=~/\\vskip/) {
2552: my $newdata=$data;
2553: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2554: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2555: foreach my $elementdata (@newdata) {
2556: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2557: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2558: my @words=split(/ /,$elementdata);
2559: foreach my $word (@words) {
2560: my $lengthword=2.5*&LATEX_length($word);
2561: if ($min_length<$lengthword) {$min_length=$lengthword;}
2562: }
2563: }
2564: } else {
2565: $current_length=2.5*&LATEX_length($data);
2566: my @words=split(/ /,$data);
2567: foreach my $word (@words) {
2568: my $lengthword=2*&LATEX_length($word);
2569: if ($min_length<$lengthword) {$min_length=$lengthword;}
2570: }
2571: }
2572: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2573: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2574: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2575: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2576: }
2577: }
2578: # Substitute all of the tables nested in this cell in their appropriate places.
2579:
2580:
2581: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2582: for (my $in=0; $in<=$nested_count; $in++) {
2583: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2584: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2585: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2586: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2587:
2588: }
2589: # Should be be killing off the 'include' elements as they're used up?
2590:
2591: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2592:
2593:
2594:
2595:
2596: # the colspan array will indicate how many columns will be spanned by this
2597: # cell..this requires that counter_columns also be adjusted accordingly
2598: # so that the next bunch of text goes in the right cell. Note that since
2599: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2600: #
2601:
2602: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2603: for (my $i = 0; $i < ($colspan -1); $i++) {
2604: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2605: }
2606: for (my $r = 0; $r < $rowspan; $r++) {
2607: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2608: # Put empty text in spanned cols.
2609:
2610: }
2611:
2612:
2613:
2614: return '';
2615: }
2616:
2617: sub end_td {
2618: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2619: my $currentstring = '';
2620: if ($target eq 'web' || $target eq 'webgrade') {
2621: $currentstring = $token->[2];
2622: } elsif ($target eq 'tex') {
2623: $Apache::londefdef::TD_redirection =0;
2624: &end_td_tex($parstack,$parser,$safeeval);
2625: }
2626: return $currentstring;
2627: }
2628:
2629: #-- <th> tag (end tag optional)
2630: sub start_th {
2631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2632: my $currentstring = '';
2633: if ($target eq 'web' || $target eq 'webgrade') {
2634: $currentstring = $token->[4];
2635: } elsif ($target eq 'tex') {
2636: $Apache::londefdef::TD_redirection = 1;
2637: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2638: }
2639: return $currentstring;
2640: }
2641:
2642: sub tagg_check {
2643: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2644: my @ar=@$parstack;
2645: for (my $i=$#ar-1;$i>=0;$i--) {
2646: if (lc($$tagstack[$i]) eq $good_tag) {
2647: &start_th_tex($parstack,$parser,$safeeval);
2648: last;
2649: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2650: splice @ar, $i+1;
2651: &end_th_tex(\@ar,$parser,$safeeval);
2652: &start_th_tex($parstack,$parser,$safeeval);
2653: last;
2654: }
2655: }
2656: return '';
2657: }
2658:
2659: sub start_th_tex {
2660: my ($parstack,$parser,$safeeval) = @_;
2661: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2662: if ($alignchar eq '') {
2663: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2664: }
2665: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2666: $Apache::londefdef::table[-1]{'counter_columns'}++;
2667: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2668: if (defined $TeXwidth) {
2669: my $current_length=&recalc($TeXwidth);
2670: $current_length=~/(\d+\.?\d*)/;
2671: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2672: }
2673: &Apache::lonxml::startredirection();
2674: return '';
2675: }
2676:
2677: sub end_th_tex {
2678: my ($parstack,$parser,$safeeval) = @_;
2679: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2680: my $data=&Apache::lonxml::endredirection();
2681: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2682: if (defined $TeXwidth) {
2683: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2684: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2685: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2686: } else {
2687: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2688: my $garbage_data=$data;
2689: my $fwidth=0;
2690: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2691: my $current_length=&recalc($1);
2692: $current_length=~/(\d+\.?\d*)/;
2693: if ($fwidth<$1) {$fwidth=$1;}
2694: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2695: }
2696: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2697: my $current_length=$1;
2698: if ($fwidth<$current_length) {$fwidth=$current_length;}
2699: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2700: }
2701: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2702: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2703: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2704: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2705: } else {
2706: $data=~s/^\s+(\S.*)/$1/;
2707: $data=~s/(.*\S)\s+$/$1/;
2708: $data=~s/(\s)+/$1/;
2709: my ($current_length,$min_length)=(0,0);
2710: if ($data=~/\\vskip/) {
2711: my $newdata=$data;
2712: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2713: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2714: foreach my $elementdata (@newdata) {
2715: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2716: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2717: my @words=split(/ /,$elementdata);
2718: foreach my $word (@words) {
2719: my $lengthword=2.5*&LATEX_length($word);
2720: if ($min_length<$lengthword) {$min_length=$lengthword;}
2721: }
2722: }
2723: } else {
2724: $current_length=2.5*&LATEX_length($data);
2725: my @words=split(/ /,$data);
2726: foreach my $word (@words) {
2727: my $lengthword=2*&LATEX_length($word);
2728: if ($min_length<$lengthword) {$min_length=$lengthword;}
2729: }
2730: }
2731: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2732: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2733: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2734: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2735: }
2736: }
2737: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2738: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2739: }
2740: #make data bold
2741: $data='\textbf{'.$data.'}';
2742: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2743: return'';
2744: }
2745:
2746: sub end_th {
2747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2748: my $currentstring = &end_p(); # Close any open <p> in the row.
2749: if ($target eq 'web' || $target eq 'webgrade') {
2750: $currentstring .= $token->[2];
2751: } elsif ($target eq 'tex') {
2752: $Apache::londefdef::TD_redirection =0;
2753: &end_th_tex($parstack,$parser,$safeeval);
2754: }
2755: return $currentstring;
2756: }
2757:
2758: #-- <img> tag (end tag forbidden)
2759: #
2760: # Render the <IMG> tag.
2761: # <IMG> has the following attributes (in addition to the
2762: # standard HTML ones:
2763: # TeXwrap - Governs how the tex target will try to wrap text around
2764: # horizontally aligned images.
2765: # TeXwidth - The width of the image when rendered for print (mm).
2766: # TeXheight - The height of the image when rendered for print (mm)
2767: # (Note there seems to also be support for this as a % of page size)
2768: #
2769: sub start_img {
2770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2771: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2772: undef,1);
2773: if (! $src &&
2774: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2775: ) {
2776: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2777: return '';
2778: }
2779: &Apache::lonxml::extlink($src);
2780: my $currentstring = '';
2781: my $scaling = .3;
2782:
2783: # Render unto browsers that which are the browser's...
2784:
2785: if ($target eq 'web' || $target eq 'webgrade') {
2786: if ($env{'browser.imagesuppress'} ne 'on') {
2787: my $enc = ('yes' eq
2788: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2789: $safeeval)));
2790: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2791: $enc);
2792: } else {
2793: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
2794: undef,1);
2795: if (!$alttag) {
2796: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2797: $src);
2798: }
2799: $currentstring.='[IMAGE: '.$alttag.']';
2800: }
2801:
2802: # and render unto TeX that which is LaTeX
2803:
2804: } elsif ($target eq 'tex') {
2805: #
2806: # The alignment will require some superstructure to be put around
2807: # the \includegraphics stuff. At present we can only partially
2808: # simulate the alignments offered by html.
2809: #
2810: #
2811: my $align = lc(&Apache::lonxml::get_param('align',
2812: $parstack,
2813: $safeeval,
2814: undef,1));
2815: if(!$align) {
2816: $align = "bottom"; # This is html's default so it's ours too.
2817: }
2818: #
2819: &Apache::lonxml::debug("Alignemnt = $align");
2820: # LaTeX's image/text wrapping is really bad since it wants to
2821: # make figures float.
2822: # The user has the optional parameter (applicable only to l/r
2823: # alignment to use the picins/parpic directive to get wrapped text
2824: # this is also imperfect.. that's why we give them a choice...
2825: # so they can't yell at us for our choice.
2826: #
2827: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2828: $parstack,
2829: $safeeval,
2830: undef,0);
2831: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2832: if(!$latex_rendering) {
2833: $latex_rendering = "texwrap";
2834: }
2835: # using texwrap inside a table does not work. So, if after all of this,
2836: # texwrap is on, we turn it off if we detect we're in a table:
2837: #
2838: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2839: $latex_rendering = 'parpic';
2840: }
2841:
2842: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2843:
2844: #if original gif/jpg/png file exist do following:
2845: my $origsrc=$src;
2846: my ($path,$file) = &get_eps_image($src);
2847: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2848: &Apache::lonxml::debug("path = $path file = $file src = $src");
2849: if (-e $src) {
2850: &Apache::lonxml::debug("$src exists");
2851: my ($height_param,$width_param)=
2852: &image_size($origsrc,0.3,$parstack,$safeeval);
2853: my $destpath = $path;
2854: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2855: my $destfile = $file;
2856: $destfile =~ s/ /\_/g;
2857: my $size;
2858: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2859: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2860: $size='['.$size;
2861: $size=~s/,$/]/;
2862: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2863: .'\includegraphics'.$size.'{'.$destfile.'} ';
2864:
2865: # If there's an alignment specification we need to honor it here.
2866: # For the horizontal alignments, we will also honor the
2867: # value of the latex specfication. The default is parbox,
2868: # and that's used for illegal values too.
2869: #
2870: # Even though we set a default alignment value, the user
2871: # could have given us an illegal value. In that case we
2872: # just use the default alignment of bottom..
2873: if ($align eq "top") {
2874: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2875: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2876: my $offset = $height_param/2;
2877: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2878: } elsif ($align eq "left") {
2879: if ($latex_rendering eq "parpic") {
2880: $currentstring = '\parpic[l]{'.$currentstring.'}';
2881: } else { # wrapfig render
2882: $currentstring = '\begin{wrapfigure}{l}{'.$width_param.'mm}'
2883: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2884: }
2885: } elsif ($align eq "right") {
2886: if ($latex_rendering eq "parpic") {
2887: $currentstring = '\parpic[r]{'.$currentstring.'}';
2888: } else { # wrapfig rendering
2889: $currentstring = '\begin{wrapfigure}{r}{'.$width_param.'mm}'
2890: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2891:
2892: }
2893: } else { # Bottom is also default.
2894: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2895: }
2896: } else {
2897: &Apache::lonxml::debug("$src does not exist");
2898: #original image file doesn't exist so check the alt attribute
2899: my $alt =
2900: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2901: unless ($alt) {
2902: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2903: }
2904:
2905: if ($alt) { $currentstring .= ' '.$alt.' '; }
2906: }
2907:
2908: # And here's where the semi-quote breaks down: allow the user
2909: # to edit the beast as well by rendering the problem for edit:
2910: } elsif ($target eq 'edit') {
2911: $currentstring .=&Apache::edit::tag_start($target,$token);
2912: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2913: &Apache::edit::browse('src',undef,'alt').' '.
2914: &Apache::edit::search('src',undef,'alt').'<br />';
2915: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2916: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2917: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2918: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2919: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2920: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2921: ['','bottom','middle','top','left','right'],$token,5);
2922: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2923: ['', 'parbox', 'parpic'], $token, 2);
2924: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2925: ['no','yes'], $token, 2);
2926: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2927: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2928: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2929: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2930: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2931:
2932:
2933: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2934: if ($width) { $currentstring.=' width="'.$width.'" '; }
2935: if ($height) { $currentstring.=' height="'.$height.'" '; }
2936: $currentstring .= ' />';
2937: } elsif ($target eq 'modified') {
2938: my ($osrc,$owidth,$oheight)=
2939: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2940: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2941: $safeeval,'src','alt','align',
2942: 'TeXwidth','TeXheight', 'TeXwrap',
2943: 'width','height','encrypturl');
2944: my ($nsrc,$nwidth,$nheight)=
2945: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2946: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2947: &image_replication($loc);
2948: my ($iwidth,$iheight);
2949: if (-e $loc) {
2950: my $image = Image::Magick->new;
2951: $image->Read($loc);
2952: ($iwidth, $iheight) = ($image->Get('width'),
2953: $image->Get('height'));
2954: }
2955: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2956: # changed image or no size specified,
2957: # if they didn't explicitly change the
2958: # width or height use the ones from the image
2959: if ($iwidth && $iheight) {
2960: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2961: $token->[2]{'width'} = $iwidth;$ctag=1;
2962: }
2963: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2964: $token->[2]{'height'}=$iheight;$ctag=1;
2965: }
2966: }
2967: }
2968: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2969: # if we don't have a width or height
2970: if ($iwidth && $cwidth && !$cheight) {
2971: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2972: }
2973: if ($iheight && $cheight && !$cwidth) {
2974: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2975: }
2976: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2977: }
2978:
2979: return $currentstring;
2980: }
2981:
2982: sub end_img {
2983: my ($target,$token) = @_;
2984: my $currentstring = '';
2985: if ($target eq 'web' || $target eq 'webgrade') {
2986: $currentstring = $token->[2];
2987: } elsif ($target eq 'tex') {
2988: $currentstring = '';
2989: }
2990: return $currentstring;
2991: }
2992:
2993: #-- <applet> tag (end tag required)
2994: sub start_applet {
2995: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2996:
2997: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2998: &Apache::lonxml::extlink($code);
2999: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3000: undef,1);
3001: &Apache::lonxml::extlink($archive);
3002: my $currentstring = '';
3003: if ($target eq 'web' || $target eq 'webgrade') {
3004: if ($env{'browser.appletsuppress'} ne 'on') {
3005: $currentstring = &Apache::lonenc::encrypt_ref($token,
3006: {'code'=>$code,
3007: 'archive'=>$archive}
3008: );
3009: } else {
3010: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3011: $safeeval,undef,1);
3012: unless ($alttag) {
3013: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3014: $code);
3015: }
3016: $currentstring='[APPLET: '.$alttag.']';
3017: }
3018: } elsif ($target eq 'tex') {
3019: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3020: $safeeval,undef,1);
3021: unless ($alttag) {
3022: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3023: undef,1);
3024: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3025: $code);
3026: }
3027: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3028: '.}\end{center}';
3029: }
3030: return $currentstring;
3031: }
3032:
3033: sub end_applet {
3034: my ($target,$token) = @_;
3035: my $currentstring = '';
3036: if ($target eq 'web' || $target eq 'webgrade') {
3037: $currentstring = $token->[2];
3038: } elsif ($target eq 'tex') {
3039: }
3040: return $currentstring;
3041: }
3042:
3043: #-- <embed> tag (end tag optional/required)
3044: sub start_embed {
3045: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3046: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3047: &Apache::lonxml::extlink($src);
3048: my $currentstring = '';
3049: if ($target eq 'web' || $target eq 'webgrade') {
3050: if ($env{'browser.embedsuppress'} ne 'on') {
3051: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3052: } else {
3053: my $alttag=&Apache::lonxml::get_param
3054: ('alt',$parstack,$safeeval,undef,1);
3055: unless ($alttag) {
3056: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3057: }
3058: $currentstring='[EMBED: '.$alttag.']';
3059: }
3060: } elsif ($target eq 'tex') {
3061: }
3062: return $currentstring;
3063: }
3064:
3065: sub end_embed {
3066: my ($target,$token) = @_;
3067: my $currentstring = '';
3068: if ($target eq 'web' || $target eq 'webgrade') {
3069: $currentstring = $token->[2];
3070: } elsif ($target eq 'tex') {
3071: }
3072: return $currentstring;
3073: }
3074:
3075: #-- <param> tag (end tag forbidden)
3076: sub start_param {
3077: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3078: if (&Apache::lonxml::get_param('name',$parstack,
3079: $safeeval,undef,1)=~/^cabbase$/i) {
3080: my $value=&Apache::lonxml::get_param('value',$parstack,
3081: $safeeval,undef,1);
3082: &Apache::lonxml::extlink($value);
3083: }
3084:
3085: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3086: &Apache::lonxml::extlink($src);
3087: my $currentstring = '';
3088: if ($target eq 'web' || $target eq 'webgrade') {
3089: my %toconvert;
3090: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3091: if ($src) { $toconvert{'src'}= $src; }
3092: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3093: undef,1);
3094: if ($name=~/^cabbase$/i) {
3095: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3096: $safeeval,undef,1);
3097: }
3098: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3099: } elsif ($target eq 'tex') {
3100: }
3101: return $currentstring;
3102: }
3103:
3104: sub end_param {
3105: my ($target,$token) = @_;
3106: my $currentstring = '';
3107: if ($target eq 'web' || $target eq 'webgrade') {
3108: $currentstring = $token->[2];
3109: } elsif ($target eq 'tex') {
3110: }
3111: return $currentstring;
3112: }
3113:
3114: #-- <allow> tag
3115: sub start_allow {
3116: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3117: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3118: &Apache::lonxml::extlink($src);
3119:
3120: if ($target eq 'tex') { &image_replication($src); }
3121: my $result;
3122: if ($target eq 'edit') {
3123: $result .=&Apache::edit::tag_start($target,$token);
3124: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3125: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3126: } elsif ($target eq 'modified') {
3127: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3128: $safeeval,'src');
3129: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3130: }
3131: return $result;
3132: }
3133:
3134: sub end_allow {
3135: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3136: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3137: return '';
3138: }
3139:
3140: #-- Frames (end tag required)
3141: #-- <frameset>
3142: sub start_frameset {
3143: my ($target,$token) = @_;
3144: my $currentstring = ''; # Close any pending para.
3145: if ($target eq 'web' || $target eq 'webgrade') {
3146: $currentstring =
3147: &Apache::loncommon::start_page($Apache::londefdef::title,
3148: $Apache::londefdef::head,
3149: {'add_entries' => $token->[2],
3150: 'no_title' => 1,
3151: 'force_register' => 1,
3152: 'frameset' => 1,});
3153:
3154: }
3155: return $currentstring;
3156: }
3157:
3158: sub end_frameset {
3159: my ($target,$token) = @_;
3160: my $currentstring = '';
3161: if ($target eq 'web' || $target eq 'webgrade') {
3162: $currentstring = $token->[2];
3163: }
3164: return $currentstring;
3165: }
3166:
3167: #-- <xmp> (end tag required)
3168: sub start_xmp {
3169: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3170: my $currentstring = '';
3171: if ($target eq 'web' || $target eq 'webgrade') {
3172: $currentstring .= $token->[4];
3173: } elsif ($target eq 'tex') {
3174: $currentstring .= '\begin{verbatim}';
3175: }
3176: return $currentstring;
3177: }
3178:
3179: sub end_xmp {
3180: my ($target,$token) = @_;
3181: my $currentstring = '';
3182: if ($target eq 'web' || $target eq 'webgrade') {
3183: $currentstring .= $token->[2];
3184: } elsif ($target eq 'tex') {
3185: $currentstring .= '\end{verbatim}';
3186: }
3187: return $currentstring;
3188: }
3189:
3190: #-- <pre> (end tag required)
3191: sub start_pre {
3192: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3193: my $currentstring = &end_p(); # close off pending <p>
3194: if ($target eq 'web' || $target eq 'webgrade') {
3195: $currentstring .= $token->[4];
3196: } elsif ($target eq 'tex') {
3197: $currentstring .= '\begin{verbatim}';
3198: &Apache::lonxml::disable_LaTeX_substitutions();
3199: }
3200: return $currentstring;
3201: }
3202:
3203: sub end_pre {
3204: my ($target,$token) = @_;
3205: my $currentstring = '';
3206: if ($target eq 'web' || $target eq 'webgrade') {
3207: $currentstring .= $token->[2];
3208: } elsif ($target eq 'tex') {
3209: $currentstring .= '\end{verbatim}';
3210: &Apache::lonxml::enable_LaTeX_substitutions();
3211: }
3212: return $currentstring;
3213: }
3214:
3215: #-- <insert>
3216: sub start_insert {
3217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3218: my $currentstring = '';
3219: if ($target eq 'web' || $target eq 'webgrade') {
3220: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3221: $currentstring .= '<b>'.$display.'</b>';;
3222: }
3223: return $currentstring;
3224: }
3225:
3226: sub end_insert {
3227: my ($target,$token) = @_;
3228: my $currentstring = '';
3229: if ($target eq 'web' || $target eq 'webgrade') {
3230: $currentstring .= '';
3231: }
3232: return $currentstring;
3233: }
3234:
3235: #-- <externallink>
3236: sub start_externallink {
3237: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3238: my $currentstring = '';
3239: if ($target eq 'web' || $target eq 'webgrade') {
3240: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3241: $currentstring .= '<b>'.$display.'</b>';;
3242: }
3243: return $currentstring;
3244: }
3245:
3246: sub end_externallink {
3247: my ($target,$token) = @_;
3248: my $currentstring = '';
3249: if ($target eq 'web' || $target eq 'webgrade') {
3250: $currentstring .= '';
3251: }
3252: return $currentstring;
3253: }
3254:
3255: #-- <blankspace heigth="">
3256: sub start_blankspace {
3257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3258: my $currentstring = &end_p(); # closes off any unclosed <p>
3259: if ($target eq 'tex') {
3260: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3261: $currentstring .= '\vskip '.$howmuch.' ';
3262: }
3263: return $currentstring;
3264: }
3265:
3266: sub end_blankspace {
3267: my ($target,$token) = @_;
3268: my $currentstring = '';
3269: if ($target eq 'tex') {
3270: $currentstring .= '';
3271: }
3272: return $currentstring;
3273: }
3274:
3275: #-- <abbr> tag (end tag required)
3276: sub start_abbr {
3277: my ($target,$token) = @_;
3278: my $currentstring = '';
3279: if ($target eq 'web' || $target eq 'webgrade') {
3280: $currentstring = $token->[4];
3281: }
3282: return $currentstring;
3283: }
3284:
3285: sub end_abbr {
3286: my ($target,$token) = @_;
3287: my $currentstring = '';
3288: if ($target eq 'web' || $target eq 'webgrade') {
3289: $currentstring = $token->[2];
3290: }
3291: return $currentstring;
3292: }
3293:
3294: #-- <acronym> tag (end tag required)
3295: sub start_acronym {
3296: my ($target,$token) = @_;
3297: my $currentstring = '';
3298: if ($target eq 'web' || $target eq 'webgrade') {
3299: $currentstring = $token->[4];
3300: }
3301: return $currentstring;
3302: }
3303:
3304: sub end_acronym {
3305: my ($target,$token) = @_;
3306: my $currentstring = '';
3307: if ($target eq 'web' || $target eq 'webgrade') {
3308: $currentstring = $token->[2];
3309: }
3310: return $currentstring;
3311: }
3312:
3313: #-- <area> tag (end tag forbidden)
3314: sub start_area {
3315: my ($target,$token) = @_;
3316: my $currentstring = '';
3317: if ($target eq 'web' || $target eq 'webgrade') {
3318: $currentstring = $token->[4];
3319: }
3320: return $currentstring;
3321: }
3322:
3323: sub end_area {
3324: my ($target,$token) = @_;
3325: my $currentstring = '';
3326: if ($target eq 'web' || $target eq 'webgrade') {
3327: $currentstring = $token->[2];
3328: }
3329: return $currentstring;
3330: }
3331:
3332: #-- <base> tag (end tag forbidden)
3333: sub start_base {
3334: my ($target,$token) = @_;
3335: my $currentstring = '';
3336: if ($target eq 'web' || $target eq 'webgrade') {
3337: $currentstring = $token->[4];
3338: }
3339: return $currentstring;
3340: }
3341:
3342: sub end_base {
3343: my ($target,$token) = @_;
3344: my $currentstring = '';
3345: if ($target eq 'web' || $target eq 'webgrade') {
3346: $currentstring = $token->[2];
3347: }
3348: return $currentstring;
3349: }
3350:
3351: #-- <bdo> tag (end tag required)
3352: sub start_bdo {
3353: my ($target,$token) = @_;
3354: my $currentstring = '';
3355: if ($target eq 'web' || $target eq 'webgrade') {
3356: $currentstring = $token->[4];
3357: }
3358: return $currentstring;
3359: }
3360:
3361: sub end_bdo {
3362: my ($target,$token) = @_;
3363: my $currentstring = '';
3364: if ($target eq 'web' || $target eq 'webgrade') {
3365: $currentstring = $token->[2];
3366: }
3367: return $currentstring;
3368: }
3369:
3370: #-- <bgsound> tag (end tag optional)
3371: sub start_bgsound {
3372: my ($target,$token) = @_;
3373: my $currentstring = '';
3374: if ($target eq 'web' || $target eq 'webgrade') {
3375: $currentstring = $token->[4];
3376: }
3377: return $currentstring;
3378: }
3379:
3380: sub end_bgsound {
3381: my ($target,$token) = @_;
3382: my $currentstring = '';
3383: if ($target eq 'web' || $target eq 'webgrade') {
3384: $currentstring = $token->[2];
3385: }
3386: return $currentstring;
3387: }
3388:
3389: #-- <blink> tag (end tag required)
3390: sub start_blink {
3391: my ($target,$token) = @_;
3392: my $currentstring = '';
3393: if ($target eq 'web' || $target eq 'webgrade') {
3394: $currentstring = $token->[4];
3395: }
3396: return $currentstring;
3397: }
3398:
3399: sub end_blink {
3400: my ($target,$token) = @_;
3401: my $currentstring = '';
3402: if ($target eq 'web' || $target eq 'webgrade') {
3403: $currentstring = $token->[2];
3404: }
3405: return $currentstring;
3406: }
3407:
3408: #-- <blockquote> tag (end tag required)
3409: sub start_blockquote {
3410: my ($target,$token) = @_;
3411: my $currentstring = &end_p(); # Close any unclosed <p>
3412: if ($target eq 'web' || $target eq 'webgrade') {
3413: $currentstring .= $token->[4];
3414: }
3415: return $currentstring;
3416: }
3417:
3418: sub end_blockquote {
3419: my ($target,$token) = @_;
3420: my $currentstring = '';
3421: if ($target eq 'web' || $target eq 'webgrade') {
3422: $currentstring = $token->[2];
3423: }
3424: return $currentstring;
3425: }
3426:
3427: #-- <button> tag (end tag required)
3428: sub start_button {
3429: my ($target,$token) = @_;
3430: my $currentstring = '';
3431: if ($target eq 'web' || $target eq 'webgrade') {
3432: $currentstring = $token->[4];
3433: }
3434: return $currentstring;
3435: }
3436:
3437: sub end_button {
3438: my ($target,$token) = @_;
3439: my $currentstring = '';
3440: if ($target eq 'web' || $target eq 'webgrade') {
3441: $currentstring = $token->[2];
3442: }
3443: return $currentstring;
3444: }
3445:
3446: #-- <caption> tag (end tag required)
3447: sub start_caption {
3448: my ($target,$token) = @_;
3449: my $currentstring = '';
3450: if ($target eq 'web' || $target eq 'webgrade') {
3451: $currentstring = $token->[4];
3452: }
3453: return $currentstring;
3454: }
3455:
3456: sub end_caption {
3457: my ($target,$token) = @_;
3458: my $currentstring = '';
3459: if ($target eq 'web' || $target eq 'webgrade') {
3460: $currentstring = $token->[2];
3461: }
3462: return $currentstring;
3463: }
3464:
3465: #-- <col> tag (end tag forbdden)
3466: sub start_col {
3467: my ($target,$token) = @_;
3468: my $currentstring = '';
3469: if ($target eq 'web' || $target eq 'webgrade') {
3470: $currentstring = $token->[4];
3471: }
3472: return $currentstring;
3473: }
3474:
3475: sub end_col {
3476: my ($target,$token) = @_;
3477: my $currentstring = '';
3478: if ($target eq 'web' || $target eq 'webgrade') {
3479: $currentstring = $token->[2];
3480: }
3481: return $currentstring;
3482: }
3483:
3484: #-- <colgroup> tag (end tag optional)
3485: sub start_colgroup {
3486: my ($target,$token) = @_;
3487: my $currentstring = '';
3488: if ($target eq 'web' || $target eq 'webgrade') {
3489: $currentstring = $token->[4];
3490: }
3491: return $currentstring;
3492: }
3493:
3494: sub end_colgroup {
3495: my ($target,$token) = @_;
3496: my $currentstring = '';
3497: if ($target eq 'web' || $target eq 'webgrade') {
3498: $currentstring = $token->[2];
3499: }
3500: return $currentstring;
3501: }
3502:
3503: #-- <del> tag (end tag required)
3504: sub start_del {
3505: my ($target,$token) = @_;
3506: my $currentstring = '';
3507: if ($target eq 'web' || $target eq 'webgrade') {
3508: $currentstring = $token->[4];
3509: }
3510: return $currentstring;
3511: }
3512:
3513: sub end_del {
3514: my ($target,$token) = @_;
3515: my $currentstring = '';
3516: if ($target eq 'web' || $target eq 'webgrade') {
3517: $currentstring = $token->[2];
3518: }
3519: return $currentstring;
3520: }
3521:
3522: #-- <fieldset> tag (end tag required)
3523: sub start_fieldset {
3524: my ($target,$token) = @_;
3525: my $currentstring = '';
3526: if ($target eq 'web' || $target eq 'webgrade') {
3527: $currentstring = $token->[4];
3528: }
3529: return $currentstring;
3530: }
3531:
3532: sub end_fieldset {
3533: my ($target,$token) = @_;
3534: my $currentstring = '';
3535: if ($target eq 'web' || $target eq 'webgrade') {
3536: $currentstring = $token->[2];
3537: }
3538: return $currentstring;
3539: }
3540:
3541: #-- <frame> tag (end tag forbidden)
3542: sub start_frame {
3543: my ($target,$token) = @_;
3544: my $currentstring = '';
3545: if ($target eq 'web' || $target eq 'webgrade') {
3546: $currentstring = $token->[4];
3547: }
3548: return $currentstring;
3549: }
3550:
3551: sub end_frame {
3552: my ($target,$token) = @_;
3553: my $currentstring = '';
3554: if ($target eq 'web' || $target eq 'webgrade') {
3555: $currentstring = $token->[2];
3556: }
3557: return $currentstring;
3558: }
3559:
3560: #-- <iframe> tag (end tag required)
3561: sub start_iframe {
3562: my ($target,$token) = @_;
3563: my $currentstring = '';
3564: if ($target eq 'web' || $target eq 'webgrade') {
3565: $currentstring = $token->[4];
3566: }
3567: return $currentstring;
3568: }
3569:
3570: sub end_iframe {
3571: my ($target,$token) = @_;
3572: my $currentstring = '';
3573: if ($target eq 'web' || $target eq 'webgrade') {
3574: $currentstring = $token->[2];
3575: }
3576: return $currentstring;
3577: }
3578:
3579: #-- <ins> tag (end tag required)
3580: sub start_ins {
3581: my ($target,$token) = @_;
3582: my $currentstring = '';
3583: if ($target eq 'web' || $target eq 'webgrade') {
3584: $currentstring = $token->[4];
3585: }
3586: return $currentstring;
3587: }
3588:
3589: sub end_ins {
3590: my ($target,$token) = @_;
3591: my $currentstring = '';
3592: if ($target eq 'web' || $target eq 'webgrade') {
3593: $currentstring = $token->[2];
3594: }
3595: return $currentstring;
3596: }
3597:
3598: #-- <isindex> tag (end tag forbidden)
3599: sub start_isindex {
3600: my ($target,$token) = @_;
3601: my $currentstring = '';
3602: if ($target eq 'web' || $target eq 'webgrade') {
3603: $currentstring = $token->[4];
3604: }
3605: return $currentstring;
3606: }
3607:
3608: sub end_isindex {
3609: my ($target,$token) = @_;
3610: my $currentstring = '';
3611: if ($target eq 'web' || $target eq 'webgrade') {
3612: $currentstring = $token->[2];
3613: }
3614: return $currentstring;
3615: }
3616:
3617: #-- <keygen> tag (end tag forbidden)
3618: sub start_keygen {
3619: my ($target,$token) = @_;
3620: my $currentstring = '';
3621: if ($target eq 'web' || $target eq 'webgrade') {
3622: $currentstring = $token->[4];
3623: }
3624: return $currentstring;
3625: }
3626:
3627: sub end_keygen {
3628: my ($target,$token) = @_;
3629: my $currentstring = '';
3630: if ($target eq 'web' || $target eq 'webgrade') {
3631: $currentstring = $token->[2];
3632: }
3633: return $currentstring;
3634: }
3635:
3636: #-- <label> tag
3637: sub start_label {
3638: my ($target,$token) = @_;
3639: my $currentstring = '';
3640: if ($target eq 'web' || $target eq 'webgrade') {
3641: $currentstring = $token->[4];
3642: }
3643: return $currentstring;
3644: }
3645:
3646: sub end_label {
3647: my ($target,$token) = @_;
3648: my $currentstring = '';
3649: if ($target eq 'web' || $target eq 'webgrade') {
3650: $currentstring = $token->[2];
3651: }
3652: return $currentstring;
3653: }
3654:
3655: #-- <layer> tag (end tag required)
3656: sub start_layer {
3657: my ($target,$token) = @_;
3658: my $currentstring = '';
3659: if ($target eq 'web' || $target eq 'webgrade') {
3660: $currentstring = $token->[4];
3661: }
3662: return $currentstring;
3663: }
3664:
3665: sub end_layer {
3666: my ($target,$token) = @_;
3667: my $currentstring = '';
3668: if ($target eq 'web' || $target eq 'webgrade') {
3669: $currentstring = $token->[2];
3670: }
3671: return $currentstring;
3672: }
3673:
3674: #-- <legend> tag (end tag required)
3675: sub start_legend {
3676: my ($target,$token) = @_;
3677: my $currentstring = '';
3678: if ($target eq 'web' || $target eq 'webgrade') {
3679: $currentstring = $token->[4];
3680: }
3681: return $currentstring;
3682: }
3683:
3684: sub end_legend {
3685: my ($target,$token) = @_;
3686: my $currentstring = '';
3687: if ($target eq 'web' || $target eq 'webgrade') {
3688: $currentstring = $token->[2];
3689: }
3690: return $currentstring;
3691: }
3692:
3693: #-- <link> tag (end tag forbidden)
3694: sub start_link {
3695: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3696: my $currentstring = '';
3697: if ($target eq 'web' || $target eq 'webgrade') {
3698: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3699: undef,1);
3700: &Apache::lonxml::extlink($href);
3701: $currentstring = $token->[4];
3702: }
3703: return $currentstring;
3704: }
3705:
3706: sub end_link {
3707: my ($target,$token) = @_;
3708: my $currentstring = '';
3709: if ($target eq 'web' || $target eq 'webgrade') {
3710: $currentstring = $token->[2];
3711: }
3712: return $currentstring;
3713: }
3714:
3715: #-- <marquee> tag (end tag optional)
3716: sub start_marquee {
3717: my ($target,$token) = @_;
3718: my $currentstring = '';
3719: if ($target eq 'web' || $target eq 'webgrade') {
3720: $currentstring = $token->[4];
3721: }
3722: return $currentstring;
3723: }
3724:
3725: sub end_marquee {
3726: my ($target,$token) = @_;
3727: my $currentstring = '';
3728: if ($target eq 'web' || $target eq 'webgrade') {
3729: $currentstring = $token->[2];
3730: }
3731: return $currentstring;
3732: }
3733:
3734: #-- <multicol> tag (end tag required)
3735: sub start_multicol {
3736: my ($target,$token) = @_;
3737: my $currentstring = &end_p(); # Close any pending <p>
3738: if ($target eq 'web' || $target eq 'webgrade') {
3739: $currentstring .= $token->[4];
3740: }
3741: return $currentstring;
3742: }
3743:
3744: sub end_multicol {
3745: my ($target,$token) = @_;
3746: my $currentstring = '';
3747: if ($target eq 'web' || $target eq 'webgrade') {
3748: $currentstring = $token->[2];
3749: }
3750: return $currentstring;
3751: }
3752:
3753: #-- <nobr> tag (end tag required)
3754: sub start_nobr {
3755: my ($target,$token) = @_;
3756: my $currentstring = '';
3757: if ($target eq 'web' || $target eq 'webgrade') {
3758: $currentstring = $token->[4];
3759: } elsif ($target eq 'tex') {
3760: $currentstring='\mbox{';
3761: }
3762: return $currentstring;
3763: }
3764:
3765: sub end_nobr {
3766: my ($target,$token) = @_;
3767: my $currentstring = '';
3768: if ($target eq 'web' || $target eq 'webgrade') {
3769: $currentstring = $token->[2];
3770: } elsif ($target eq 'tex') {
3771: $currentstring='}';
3772: }
3773: return $currentstring;
3774: }
3775:
3776: #-- <noembed> tag (end tag required)
3777: sub start_noembed {
3778: my ($target,$token) = @_;
3779: my $currentstring = '';
3780: if ($target eq 'web' || $target eq 'webgrade') {
3781: $currentstring = $token->[4];
3782: }
3783: return $currentstring;
3784: }
3785:
3786: sub end_noembed {
3787: my ($target,$token) = @_;
3788: my $currentstring = '';
3789: if ($target eq 'web' || $target eq 'webgrade') {
3790: $currentstring = $token->[2];
3791: }
3792: return $currentstring;
3793: }
3794:
3795: #-- <noframes> tag (end tag required)
3796: sub start_noframes {
3797: my ($target,$token) = @_;
3798: my $currentstring = '';
3799: if ($target eq 'web' || $target eq 'webgrade') {
3800: $currentstring = $token->[4];
3801: }
3802: return $currentstring;
3803: }
3804:
3805: sub end_noframes {
3806: my ($target,$token) = @_;
3807: my $currentstring = '';
3808: if ($target eq 'web' || $target eq 'webgrade') {
3809: $currentstring = $token->[2];
3810: }
3811: return $currentstring;
3812: }
3813:
3814: #-- <nolayer> tag (end tag required)
3815: sub start_nolayer {
3816: my ($target,$token) = @_;
3817: my $currentstring = '';
3818: if ($target eq 'web' || $target eq 'webgrade') {
3819: $currentstring = $token->[4];
3820: }
3821: return $currentstring;
3822: }
3823:
3824: sub end_nolayer {
3825: my ($target,$token) = @_;
3826: my $currentstring = '';
3827: if ($target eq 'web' || $target eq 'webgrade') {
3828: $currentstring = $token->[2];
3829: }
3830: return $currentstring;
3831: }
3832:
3833: #-- <noscript> tag (end tag required)
3834: sub start_noscript {
3835: my ($target,$token) = @_;
3836: my $currentstring = '';
3837: if ($target eq 'web' || $target eq 'webgrade') {
3838: $currentstring = $token->[4];
3839: }
3840: return $currentstring;
3841: }
3842:
3843: sub end_noscript {
3844: my ($target,$token) = @_;
3845: my $currentstring = '';
3846: if ($target eq 'web' || $target eq 'webgrade') {
3847: $currentstring = $token->[2];
3848: }
3849: return $currentstring;
3850: }
3851:
3852: #-- <object> tag (end tag required)
3853: sub start_object {
3854: my ($target,$token) = @_;
3855: my $currentstring = '';
3856: if ($target eq 'web' || $target eq 'webgrade') {
3857: $currentstring = $token->[4];
3858: }
3859: return $currentstring;
3860: }
3861:
3862: sub end_object {
3863: my ($target,$token) = @_;
3864: my $currentstring = '';
3865: if ($target eq 'web' || $target eq 'webgrade') {
3866: $currentstring = $token->[2];
3867: }
3868: return $currentstring;
3869: }
3870:
3871: #-- <optgroup> tag (end tag required)
3872: sub start_optgroup {
3873: my ($target,$token) = @_;
3874: my $currentstring = '';
3875: if ($target eq 'web' || $target eq 'webgrade') {
3876: $currentstring = $token->[4];
3877: }
3878: return $currentstring;
3879: }
3880:
3881: sub end_optgroup {
3882: my ($target,$token) = @_;
3883: my $currentstring = '';
3884: if ($target eq 'web' || $target eq 'webgrade') {
3885: $currentstring = $token->[2];
3886: }
3887: return $currentstring;
3888: }
3889:
3890: #-- <samp> tag (end tag required)
3891: sub start_samp {
3892: my ($target,$token) = @_;
3893: my $currentstring = '';
3894: if ($target eq 'web' || $target eq 'webgrade') {
3895: $currentstring = $token->[4];
3896: } elsif ($target eq 'tex') {
3897: $currentstring='\texttt{';
3898: }
3899: return $currentstring;
3900: }
3901:
3902: sub end_samp {
3903: my ($target,$token) = @_;
3904: my $currentstring = '';
3905: if ($target eq 'web' || $target eq 'webgrade') {
3906: $currentstring = $token->[2];
3907: } elsif ($target eq 'tex') {
3908: $currentstring='}';
3909: }
3910: return $currentstring;
3911: }
3912:
3913: #-- <server> tag
3914: sub start_server {
3915: my ($target,$token) = @_;
3916: my $currentstring = '';
3917: if ($target eq 'web' || $target eq 'webgrade') {
3918: $currentstring = $token->[4];
3919: }
3920: return $currentstring;
3921: }
3922:
3923: sub end_server {
3924: my ($target,$token) = @_;
3925: my $currentstring = '';
3926: if ($target eq 'web' || $target eq 'webgrade') {
3927: $currentstring = $token->[2];
3928: }
3929: return $currentstring;
3930: }
3931:
3932: #-- <spacer> tag (end tag forbidden)
3933: sub start_spacer {
3934: my ($target,$token) = @_;
3935: my $currentstring = &end_p(); # Close off any open <p> tag.
3936: if ($target eq 'web' || $target eq 'webgrade') {
3937: $currentstring .= $token->[4];
3938: }
3939: return $currentstring;
3940: }
3941:
3942: sub end_spacer {
3943: my ($target,$token) = @_;
3944: my $currentstring = '';
3945: if ($target eq 'web' || $target eq 'webgrade') {
3946: $currentstring = $token->[2];
3947: }
3948: return $currentstring;
3949: }
3950:
3951: #-- <span> tag (end tag required)
3952: sub start_span {
3953: my ($target,$token) = @_;
3954: my $currentstring = '';
3955: if ($target eq 'web' || $target eq 'webgrade') {
3956: $currentstring = $token->[4];
3957: }
3958: return $currentstring;
3959: }
3960:
3961: sub end_span {
3962: my ($target,$token) = @_;
3963: my $currentstring = '';
3964: if ($target eq 'web' || $target eq 'webgrade') {
3965: $currentstring = $token->[2];
3966: }
3967: return $currentstring;
3968: }
3969:
3970: #-- <tbody> tag (end tag optional)
3971: sub start_tbody {
3972: my ($target,$token) = @_;
3973: my $currentstring = '';
3974: if ($target eq 'web' || $target eq 'webgrade') {
3975: $currentstring = $token->[4];
3976: }
3977: return $currentstring;
3978: }
3979:
3980: sub end_tbody {
3981: my ($target,$token) = @_;
3982: my $currentstring = '';
3983: if ($target eq 'web' || $target eq 'webgrade') {
3984: $currentstring = $token->[2];
3985: }
3986: return $currentstring;
3987: }
3988:
3989: #-- <tfoot> tag (end tag optional)
3990: sub start_tfoot {
3991: my ($target,$token) = @_;
3992: my $currentstring = '';
3993: if ($target eq 'web' || $target eq 'webgrade') {
3994: $currentstring = $token->[4];
3995: }
3996: return $currentstring;
3997: }
3998:
3999: sub end_tfoot {
4000: my ($target,$token) = @_;
4001: my $currentstring = '';
4002: if ($target eq 'web' || $target eq 'webgrade') {
4003: $currentstring = $token->[2];
4004: }
4005: return $currentstring;
4006: }
4007:
4008: #-- <thead> tag (end tag optional)
4009: sub start_thead {
4010: my ($target,$token) = @_;
4011: my $currentstring = '';
4012: if ($target eq 'web' || $target eq 'webgrade') {
4013: $currentstring = $token->[4];
4014: }
4015: return $currentstring;
4016: }
4017:
4018: sub end_thead {
4019: my ($target,$token) = @_;
4020: my $currentstring = '';
4021: if ($target eq 'web' || $target eq 'webgrade') {
4022: $currentstring = $token->[2];
4023: }
4024: return $currentstring;
4025: }
4026:
4027: #-- <var> tag
4028: sub start_var {
4029: my ($target,$token) = @_;
4030: my $currentstring = '';
4031: if ($target eq 'web' || $target eq 'webgrade') {
4032: $currentstring = $token->[4];
4033: } elsif ($target eq 'tex') {
4034: $currentstring = '\textit{';
4035: }
4036: return $currentstring;
4037: }
4038:
4039: sub end_var {
4040: my ($target,$token) = @_;
4041: my $currentstring = '';
4042: if ($target eq 'web' || $target eq 'webgrade') {
4043: $currentstring = $token->[2];
4044: } elsif ($target eq 'tex') {
4045: $currentstring = '}';
4046: }
4047: return $currentstring;
4048: }
4049:
4050: #-- <wbr> tag (end tag forbidden)
4051: sub start_wbr {
4052: my ($target,$token) = @_;
4053: my $currentstring = '';
4054: if ($target eq 'web' || $target eq 'webgrade') {
4055: $currentstring = $token->[4];
4056: }
4057: return $currentstring;
4058: }
4059:
4060: sub end_wbr {
4061: my ($target,$token) = @_;
4062: my $currentstring = '';
4063: if ($target eq 'web' || $target eq 'webgrade') {
4064: $currentstring = $token->[2];
4065: }
4066: return $currentstring;
4067: }
4068:
4069: #-- <hideweboutput> tag
4070: sub start_hideweboutput {
4071: my ($target,$token) = @_;
4072: if ($target eq 'web' || $target eq 'webgrade') {
4073: &Apache::lonxml::startredirection();
4074: }
4075: return '';
4076: }
4077:
4078: sub end_hideweboutput {
4079: my ($target,$token) = @_;
4080: my $currentstring = '';
4081: if ($target eq 'web' || $target eq 'webgrade') {
4082: $currentstring = &Apache::lonxml::endredirection();
4083: }
4084: return '';
4085: }
4086:
4087:
4088: sub image_replication {
4089: my $src = shift;
4090: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4091: #replicates eps or ps
4092: my $epssrc = my $pssrc = $src;
4093: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4094: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4095: if (not -e $epssrc && not -e $pssrc) {
4096: my $result=&Apache::lonnet::repcopy($epssrc);
4097: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4098: }
4099: return '';
4100: }
4101: #
4102: # Get correct sizing parameter for an image given
4103: # it's initial ht. and wid. This allows sizing of
4104: # images that are generated on-the-fly (e.g. gnuplot)
4105: # as well as serving as a utility for image_size.
4106: #
4107: # Parameter:
4108: # height_param
4109: # width_param - Initial picture dimensions.
4110: # scaling - A scale factor.
4111: # parstack, - the current stack of tag attributes
4112: # from the xml parser
4113: # safeeval, - pointer to the safespace
4114: # depth, - from what level in the stack to look for attributes
4115: # (assumes -1 if unspecified)
4116: # cis - look for attrubutes case insensitively
4117: # (assumes false)
4118: #
4119: # Returns:
4120: # height, width - new dimensions.
4121: #
4122: sub resize_image {
4123: my ($height_param, $width_param, $scaling,
4124: $parstack, $safeeval, $depth, $cis) = @_;
4125:
4126: # First apply the scaling...
4127:
4128: $height_param = $height_param * $scaling;
4129: $width_param = $width_param * $scaling;
4130:
4131: #do we have any specified LaTeX size of the picture?
4132: my $toget='TeXwidth';
4133: if ($cis) {
4134: $toget=lc($toget);
4135: }
4136: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4137: $safeeval,$depth,$cis);
4138: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4139: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4140: $safeeval,$depth,$cis);
4141: #do we have any specified web size of the picture?
4142: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4143: $depth,1);
4144: if ($TeXwidth) {
4145: my $old_width_param=$width_param;
4146: if ($TeXwidth=~/(\d+)\s*\%/) {
4147: $width_param = $1*$env{'form.textwidth'}/100;
4148: } else {
4149: $width_param = $TeXwidth;
4150: }
4151: if ($TeXheight) {
4152: $height_param = $TeXheight;
4153: } elsif ($old_width_param) {
4154: $height_param=$TeXwidth/$old_width_param*$height_param;
4155: }
4156: } elsif ($TeXheight) {
4157: $height_param = $TeXheight;
4158: if ($height_param) {
4159: $width_param = $TeXheight/$height_param*$width_param;
4160: }
4161: } elsif ($width) {
4162: my $old_width_param=$width_param;
4163: $width_param = $width*$scaling;
4164: if ($old_width_param) {
4165: $height_param=$width_param/$old_width_param*$height_param;
4166: }
4167: }
4168: if ($width_param > $env{'form.textwidth'}) {
4169: my $old_width_param=$width_param;
4170: $width_param =0.95*$env{'form.textwidth'};
4171: if ($old_width_param) {
4172: $height_param=$width_param/$old_width_param*$height_param;
4173: }
4174: }
4175:
4176: return ($height_param, $width_param);
4177: }
4178:
4179: sub image_size {
4180: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4181:
4182: #size of image from gif/jpg/jpeg/png
4183: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4184: if (-e $ressrc) {
4185: $src = $ressrc;
4186: }
4187: my $image = Image::Magick->new;
4188: my $current_figure = $image->Read($src);
4189: my $width_param = $image->Get('width');
4190: my $height_param = $image->Get('height');
4191: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4192: undef($image);
4193:
4194: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4195: $scaling, $parstack, $safeeval,
4196: $depth, $cis);
4197:
4198: return ($height_param, $width_param);
4199: }
4200:
4201: sub image_width {
4202: my ($height, $width) = &image_size(@_);
4203: return $width;
4204: }
4205: # Not yet 100% sure this is correct in all circumstances..
4206: # due to my uncertainty about mods to image_size.
4207: #
4208: sub image_height {
4209: my ($height, $width) = &image_size(@_);
4210: return $height;
4211: }
4212:
4213: sub get_eps_image {
4214: my ($src)=@_;
4215: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4216:
4217: # In order to prevent the substitution of the alt text, we need to
4218: # be sure the orig_src file is on system now so:
4219:
4220: if (! -e $orig_src) {
4221: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4222: }
4223: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4224: my ($spath, $sname, $sext) = fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
4225: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
4226: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4227: &Apache::lonxml::debug("Filelocation gives: $src");
4228: if (! -e $src) {
4229: &Apache::lonxml::debug("$src does not exist");
4230: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4231: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4232: #if replication failed try to find ps file
4233: $src=~s/\.eps$/\.ps/;
4234: &Apache::lonxml::debug("Now looking for $src");
4235: #if no ps file try to replicate it.
4236: my $didrepcopy = &Apache::lonnet::repcopy($src);
4237: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4238: if ( (not -e $src) ||
4239: ($didrepcopy ne 'ok')) {
4240: &Apache::lonxml::debug("Failed to find or replicate $src");
4241:
4242: #if replication failed try to produce eps file dynamically
4243: $src=~s/\.ps$/\.eps/;
4244: my $temp_file;
4245: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4246: my $newsrc=$orig_src;
4247: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4248: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4249: print FILE "$newsrc\n";
4250: close FILE;
4251: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4252: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4253: if ($sext ne "") { # Put the ext. back in to uniquify.
4254: $src =~ s/\.eps$/$sext.eps/;
4255: }
4256: }
4257: }
4258: }
4259: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4260: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4261: return ($path.'/',$file);
4262: }
4263:
4264: sub eps_generation {
4265: my ($src,$file,$width_param) = @_;
4266: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4267: my $temp_file = Apache::File->new('>>'.$filename);
4268: print $temp_file "$src\n";
4269: my $newsrc = $src;
4270: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4271: $newsrc=~s/\/home\/httpd\/html\/res//;
4272: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
4273: $newsrc=~s/\/\.\//\//;
4274: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
4275: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
4276: $newsrc=~s/\/home\/httpd\/lonUsers//;
4277: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
4278: }
4279: if ($newsrc=~/\/userfiles\//) {
4280: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4281: } else {
4282: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4283: }
4284: }
4285:
4286: sub file_path {
4287: my $src=shift;
4288: my ($file,$path);
4289: if ($src =~ m!(.*)/([^/]*)$!) {
4290: $file = $2;
4291: $path = $1.'/';
4292: }
4293: return $file,$path;
4294: }
4295: # Converts a measurement in to mm from any of
4296: # the other valid LaTeX units of measure.
4297: # If the units of measure are missing from the
4298: # parameter, it is assumed to be in and returned
4299: # with mm units of measure
4300: sub recalc {
4301: my $argument = shift;
4302: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4303: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4304: my $value=$1;
4305: my $units=$2;
4306: if ($units eq 'cm') {
4307: $value*=10;
4308: } elsif ($units eq 'in') {
4309: $value*=25.4;
4310: } elsif ($units eq 'pc') {
4311: $value*=(25.4*12/72.27);
4312: } elsif ($units eq 'pt') {
4313: $value*=(25.4/72.27);
4314: }
4315: return $value.' mm';
4316: }
4317:
4318: sub LATEX_length {
4319: my $garbage=shift;
4320: $garbage=~s/^\s+$//;
4321: $garbage=~s/^\s+(\S.*)/$1/;#space before
4322: $garbage=~s/(.*\S)\s+$/$1/;#space after
4323: $garbage=~s/(\s)+/$1/;#only one space
4324: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4325: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4326: $garbage=~s/([^\\])\$/$1/g;#$
4327: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4328: $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;
4329: $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;
4330: $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;
4331: $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;
4332: $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;
4333: $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;
4334: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4335: #remove some other LaTeX command
4336: $garbage=~s|\\(\w+)\\|\\|g;
4337: $garbage=~s|\\(\w+)(\s*)|$2|g;
4338: $garbage=~s|\+|11|g;
4339: my $value=length($garbage);
4340: return $value;
4341: }
4342:
4343:
4344: # is_inside_of $tagstack $tag
4345: # This sub returns true if the current state of Xml processing
4346: # is inside of the tag.
4347: # Parameters:
4348: # tagstack - The tagstack from the parser.
4349: # tag - The tag (without the <>'s.).
4350: # Sample usage:
4351: # if (is_inside_of($tagstack "table")) {
4352: # # I'm in a table....
4353: # }
4354: sub is_inside_of {
4355: my ($tagstack, $tag) = @_;
4356: my @stack = @$tagstack;
4357: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4358: if ($stack[$i] eq $tag) {
4359: return 1;
4360: }
4361: }
4362: return 0;
4363: }
4364:
4365:
4366: 1;
4367: __END__
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