3 ### texi2html customization script for Lilypond
4 ### Author: Reinhold Kainhofer <reinhold@kainhofer.com>, 2008.
5 ### Some code parts copied from texi2html and adapted.
9 ### Features implemented here:
10 ### -) For split manuals, the main page is index.html.
11 ### -) All @unnumbered* sections are placed into the same file
12 ### (implemented by split_at_numbered_sections)
13 ### -) Use our custom CSS file, with IE-specific fixes in another CSS file,
14 ### impelmented by lilypond_css_lines
15 ### -) TOC (folded, with the current page highlighted) in an iframe is added
16 ### to every page; implemented by:
17 ### lilypond_print_element_header -- building of the TOC
18 ### lilypond_toc_body -- generation of customized TOC output
19 ### lilypond_print_page_head -- start <div id="main">
20 ### print_lilypond_page_foot -- closing id=main, output of footer & TOC
21 ### -) External refs are formatted only as "Text of the node" (not as >>see
22 ### "NODE" section "SECTION" in "BOOK"<< like with default texi2html). Also,
23 ### the leading "(book-name)" is removed.
24 ### Implemented by overriding lilypond_external_ref
25 ### -) Navigation bars on top/bottom of the page and between sections are not
26 ### left-aligned, but use a combination of left/center/right aligned table
27 ### cells; For this, I heavily extend the texi2html code to allow for
28 ### differently aligned cells and for multi-line tables);
29 ### Implemented in lilypond_print_navigation
30 ### -) Different formatting than the default: example uses the same formatting
32 ### -) Allow translated section titles: All section titles can be translated,
33 ### the original (English) title is associated with @translationof. This is
34 ### needed, because the file name / anchor is generated from the original
35 ### English title, since otherwise language-autoselection would break with
37 ### Since it is then no longer possible to obtain the file name from the
38 ### section title, I keep a sectionname<=>filename/anchor around. This way,
39 ### xrefs from other manuals can simply load that map and retrieve the
40 ### correct file name for the link. Implemented in:
41 ### lilypond_unknown (handling of @translationof, in case
42 ### extract_texi_filenames.py messes up...)
43 ### split_at_numbered_sections (correct file name: use the map)
44 ### lilypond_init_map (read in the externally created map from disk)
45 ### lilypond_external_href (load the map for xrefs, use the correct
49 ### Useful helper functions:
50 ### -) texinfo_file_name($node_name): returns a texinfo-compatible file name
51 ### for the given string $node_name (whitespace trimmed/replaced by -,
52 ### non-standard chars replaced by _xxxx (ascii char code) and forced to
53 ### start with a letter by prepending t_g if necessary)
56 package Texi2HTML::Config;
62 #############################################################################
63 ### SETTINGS FOR TEXI2HTML
64 #############################################################################
66 @Texi2HTML::Config::CSS_REFS = ("lilypond.css");
67 $Texi2HTML::Config::USE_ACCESSKEY = 1;
68 $Texi2HTML::Config::USE_LINKS = 1;
69 $Texi2HTML::Config::USE_REL_REV = 1;
70 $Texi2HTML::Config::element_file_name = \&split_at_numbered_sections;
71 $Texi2HTML::Config::print_element_header = \&lilypond_print_element_header;
72 $Texi2HTML::Config::print_page_foot = \&print_lilypond_page_foot;
73 $Texi2HTML::Config::print_navigation = \&lilypond_print_navigation;
74 $Texi2HTML::Config::external_ref = \&lilypond_external_ref;
75 $Texi2HTML::Config::external_href = \&lilypond_external_href;
76 $Texi2HTML::Config::toc_body = \&lilypond_toc_body;
77 $Texi2HTML::Config::css_lines = \&lilypond_css_lines;
78 $Texi2HTML::Config::unknown = \&lilypond_unknown;
79 $Texi2HTML::Config::print_page_head = \&lilypond_print_page_head;
81 # Examples should be formatted similar to quotes:
82 $Texi2HTML::Config::complex_format_map->{'example'} = {
83 'begin' => q{"<blockquote><pre class=\"example\">"},
84 'end' => q{"</pre></blockquote>\n"},
88 my @section_to_filename;
93 #############################################################################
95 #############################################################################
98 $Data::Dumper::Maxdepth = 2;
100 sub print_element_info($)
103 print "~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n";
104 print "Element: $element\n";
105 print Dumper($element);
112 #############################################################################
114 #############################################################################
116 # Convert a given node name to its proper file name (normalization as explained
117 # in the texinfo manual:
118 # http://www.gnu.org/software/texinfo/manual/texinfo/html_node/HTML-Xref-Node-Name-Expansion.html
119 sub texinfo_file_name($)
123 # File name normalization by texinfo:
124 # 1/2: letters and numbers are left unchanged
125 # 3/4: multiple, leading and trailing whitespace is removed
126 $text = main::normalise_space($text);
127 # 5/6: all remaining spaces are converted to '-', all other 7- or 8-bit
128 # chars are replaced by _xxxx (xxxx=ascii character code)
129 while ($text ne '') {
130 if ($text =~ s/^([A-Za-z0-9]+)//o) { # number or letter stay unchanged
132 } elsif ($text =~ s/^ //o) { # space -> '-'
134 } elsif ($text =~ s/^(.)//o) { # Otherwise use _xxxx (ascii char code)
136 if ( $ccode <= 0xFFFF ) {
137 $result .= sprintf("_%04x", $ccode);
139 $result .= sprintf("__%06x", $ccode);
143 # 7: if name does not begin with a letter, prepend 't_g' (so it starts with a letter)
144 if ($result !~ /^[a-zA-Z]/) {
145 $result = 't_g' . $result;
152 # Load a file containing a nodename<=>filename map (tab-sepatared, i.e.
153 # NODENAME\tFILENAME\tANCHOR
154 # Returns a ref to a hash "Node title" => ["FilenameWithoutExt", "Anchor"]
155 sub load_map_file ($)
160 if (open(XREFFILE, $mapfile)) {
161 while ( <XREFFILE> ) {
162 # parse the tab-separated entries and insert them into the map:
164 my @entries = split(/\t/, $_);
165 if (scalar (@entries) == 3) {
166 $node_map->{$entries[0]} = [$entries[1], $entries[2]];
168 print STDERR "Invalid entry in the node file $mapfile: $_\n";
173 print STDERR "Unable to load the map file $mapfile\n";
182 #############################################################################
184 #############################################################################
186 # Include our standard CSS file, not hard-coded CSS code directly in the HTML!
187 # For IE, conditionally include the lilypond-ie-fixes.css style sheet
188 sub lilypond_css_lines ($$)
190 my $import_lines = shift;
191 my $rule_lines = shift;
192 return if (defined($CSS_LINES));
193 if (@$rule_lines or @$import_lines)
195 $CSS_LINES = "<style type=\"text/css\">\n<!--\n";
196 $CSS_LINES .= join('',@$import_lines) . "\n" if (@$import_lines);
197 $CSS_LINES .= join('',@$rule_lines) . "\n" if (@$rule_lines);
198 $CSS_LINES .= "-->\n</style>\n";
200 foreach my $ref (@CSS_REFS)
202 $CSS_LINES .= "<link rel=\"stylesheet\" type=\"text/css\" href=\"$ref\">\n";
204 $CSS_LINES .= "<!--[if lte IE 7]>\n<link href=\"lilypond-ie-fixes.css\" rel=\"stylesheet\" type=\"text/css\">\n<![endif]-->\n";
211 #############################################################################
212 ### SPLITTING BASED ON NUMBERED SECTIONS
213 #############################################################################
217 my $node_to_filename_map = ();
219 # This function makes sure that files are only generated for numbered sections,
220 # but not for unnumbered ones. It is called after texi2html has done its own
221 # splitting and simply returns the filename for the node given as first argument
222 # Nodes with the same filename will be printed out to the same filename, so
223 # this really all we need. Also, make sure that the file names for sections
224 # are derived from the section title. We also might want to name the anchors
225 # according to node titles, which works by simply overriding the id element of
227 # If an external nodename<=>filename/anchor map file is found (loaded in
228 # lilypond_init_out, use the externally created values, otherwise use the
230 sub split_at_numbered_sections($$$)
234 my $docu_name = shift;
235 my $docu_ext = $Texi2HTML::Config::EXTENSION;
237 my $node_name = main::remove_texi($element->{'node_ref'}->{'texi'});
238 if (exists ($node_to_filename_map->{$node_name})) {
239 (my $filename, my $anchor) = @{$node_to_filename_map->{$node_name}};
240 $filename .= ".$docu_ext" if (defined($docu_ext));
241 $element->{id} = $anchor;
242 if ($filename == $lastfilename) {
243 $$element{doc_nr} = $docnr;
246 $$element{doc_nr} = $docnr;
247 $lastfilename = $filename;
251 } elsif ($type eq "top" or $type eq "toc" or $type eq "doc" or $type eq "stoc" or $type eq "foot" or $type eq "about") {
252 # TOC, footer, about etc. are called with undefined $element and $type == "toc"|"stoc"|"foot"|"about"
255 print STDERR "WARNING: Node '$node_name' was NOT found in the map\n"
256 unless $node_name eq '';
257 # If we have an entry in the section<=>filename map, use that one, otherwise
258 # generate the filename/anchor here. In the latter case, external manuals
259 # will not be able to retrieve the file name for xrefs!!! Still, I already
260 # had that code, so I'll leave it in in case something goes wrong with the
261 #extract_texi_filenames.py script in the lilypond build process!
262 # TODO: lookup node name in nodename<=>filename map
264 # derive the name of the anchor (i.e. the part after # in the links!),
265 # don't use texi2html's SECx.x default!
267 my $sec_name = main::remove_texi($element->{'texi'});
268 if ($element->{'node_ref'}->{'texi'} ne '') { # if we have a node, use its name:
269 $sec_name = main::remove_texi($element->{'node_ref'}->{'texi'});
271 my $anchor = $sec_name;
272 if ($$element{translationof}) {
273 $anchor = main::remove_texi($$element{translationof});
275 # normalize to the same file name as texinfo
276 $anchor = texinfo_file_name($anchor);
277 $$element{id} = $anchor;
278 # Numbered sections will get a filename Node_title, unnumbered sections will use
279 # the file name of the previous numbered section:
280 if (($element->{number}) or ($lastfilename eq '') or ($element->{level} == 1)) {
281 my $filename = $anchor;
282 $filename .= ".$docu_ext" if (defined($docu_ext));
284 $$element{doc_nr} = $docnr;
285 $lastfilename = $filename;
288 $$element{doc_nr} = $docnr;
289 return $lastfilename;
297 ## Load the map file for the corrently processed texi file. We do this
298 # (mis-)using a command init handler, since texi2html does not have any
299 # other hooks that are called after THISDOC is filled but before phase 2
300 # of the texi2html conversion.
301 sub lilypond_init_map ()
303 my $docu = $Texi2HTML::THISDOC{'input_file_name'};
304 my $docu_dir, $docu_name;
305 if ($docu =~ /(.*\/)/) {
306 chop($docu_dir = $1);
308 $docu_name =~ s/.*\///;
313 $docu_name =~ s/\.te?x(i|info)?$//;
315 my $map_filename = "$docu_dir/${docu_name}_xref.map";
316 $node_to_filename_map = load_map_file ($map_filename);
318 push @Texi2HTML::Config::command_handler_init, \&lilypond_init_map;
322 #############################################################################
323 ### CLEANER LINK TITLE FOR EXTERNAL REFS
324 #############################################################################
326 # The default formatting of external refs returns e.g.
327 # "(lilypond-internals)Timing_translator", so we remove all (...) from the
328 # file_and_node argument. Also, we want only a very simple format, so we don't
329 # even call the default handler!
330 sub lilypond_external_ref($$$$$$)
335 my $file_node = shift;
337 my $cross_ref = shift;
339 $file_node =~ s/\(.*\)//;
340 $file_node = &$anchor('', $href, $file_node) if ($file_node ne '');
341 return &$I('%{node_file_href}', { 'node_file_href' => $file_node });
343 # Default: format as "see <a ..>NODE</a> section 'SECTION' in BOOK". We don't want this!
344 # return t2h_default_external_ref($type, $section, $book, $file_node, $href, $cross_ref);
351 #############################################################################
352 ### HANDLING TRANSLATED SECTIONS: handle @translationof, secname<->filename
353 ### map stored on disk, xrefs in other manuals load that map
354 #############################################################################
357 # Try to make use of @translationof to generate files according to the original
358 # English section title...
359 sub lilypond_unknown($$$$$)
367 # the @translationof macro provides the original English section title,
368 # which should be used for file/anchor naming, while the title will be
369 # translated to each language
370 # It is already used by extract_texi_filenames.py, so this should not be
371 # necessary here at all. Still, I'll leave the code in just in case the
372 # python script messed up ;-)
373 if ($pass == 1 and $macro eq "translationof") {
374 if (ref($state->{'element'})=='HASH') {
375 $state->{'element'}->{'translationof'} = main::normalise_space($line);
377 return ('', true, undef, undef);
379 return t2h_default_unknown($macro, $line, $pass, $stack, $state);
386 my %translated_books = ();
387 # Construct a href to an external source of information.
388 # node is the node with texinfo @-commands
389 # node_id is the node transliterated and transformed as explained in the
391 # node_xhtml_id is the node transformed such that it is unique and can
392 # be used to make an html cross ref as explained in the texinfo manual
393 # file is the file in '(file)node'
394 sub lilypond_external_href($$$)
398 my $node_xhtml_id = shift;
400 my $original_func = \&t2h_default_external_href;
403 # 1) Keep a hash of book->section_map
404 # 2) if not file in keys hash => try to load the map (assign empty map is non-existent => will load only once!)
405 # 3) if node in the section=>(file, anchor) map, replace node_id and node_xhtml_id by the map's values
406 # 4) call the t2h_default_external_href with these values (or the old ones if not found)
407 # print STDERR "lilypond_external_href: texi_node='$node', node_file='$node_id', node_xhtml_id='$node_xhtml_id', file='$file'\n";
408 if (($node_id ne '') and defined($file)) {
409 if (!exists($translated_books{$file})) {
410 print STDERR "Map for book $file not yet loaded, trying to initialize\n";
411 # TODO: Load the file...
412 $translated_books{$file}={};
414 my $section_name_map = $translated_books{$file};
415 if (exists($section_name_map->{$node_id})) {
416 print STDERR "Found key $node_id in section_name_map\n";
417 # TODO: Assign the new values to $file, $node_id and $node_xhtml_id!
418 # TODO: Am I doing this right?
420 (my $filename, my $anchor) = @$section_name_map->{$node_id};
421 $filename .= ".$docu_ext" if (defined($docu_ext));
423 $node_xhtml_id = $anchor;
426 # print STDERR "Unable to find key $node_id in section_name_map\n";
429 # Code copied from texi2html:
430 # I'll need to find the correct path to the map file and texi2html already
431 # seems to do a good job for this with the following code, which I will
432 # need to strip down to those parts that we really need:
434 # $file = '' if (!defined($file));
435 # my $default_target_split = $EXTERNAL_CROSSREF_SPLIT;
442 # if ($NEW_CROSSREF_STYLE)
444 # $file =~ s/\.[^\.]*$//;
445 # $file =~ s/^.*\///;
447 # if (exists($Texi2HTML::THISDOC{'htmlxref'}->{$file}))
449 # if (exists($Texi2HTML::THISDOC{'htmlxref'}->{$file}->{'split'}))
452 # $href_split = $Texi2HTML::THISDOC{'htmlxref'}->{$file}->{'split'}->{'href'};
454 # if (exists($Texi2HTML::THISDOC{'htmlxref'}->{$file}->{'mono'}))
457 # $href_mono = $Texi2HTML::THISDOC{'htmlxref'}->{$file}->{'mono'}->{'href'};
461 # if ((not $target_mono) and (not $target_split))
462 # { # nothing specified for that manual, use default
463 # $target_split = $default_target_split;
465 # elsif ($target_split and $target_mono)
466 # { # depends on the splitting of the manual
467 # $target_split = $SPLIT;
469 # elsif ($target_mono)
470 # { # only mono specified
476 # if (defined($href_split))
478 # $file = "$href_split";
480 # elsif (defined($EXTERNAL_DIR))
482 # $file = "$EXTERNAL_DIR/$file";
486 # $file = "../$file";
491 # {# target not split
492 # if (defined($href_mono))
494 # $file = "$href_mono";
498 # if (defined($EXTERNAL_DIR))
500 # $file = "$EXTERNAL_DIR/$file";
504 # $file = "../$file";
506 # $file .= "." . $NODE_FILE_EXTENSION;
513 # if (defined($EXTERNAL_DIR))
515 # $file = $EXTERNAL_DIR . $file;
519 # $file = '../' . $file;
525 # $target_split = $default_target_split;
529 # if ($NEW_CROSSREF_STYLE)
533 # return $file . $TOP_NODE_FILE . '.' . $NODE_FILE_EXTENSION . '#Top';
535 # #return $file . '#Top';
539 # return $file . '#Top';
548 # if ($NEW_CROSSREF_STYLE)
551 # $target = $node_xhtml_id;
555 # $node = main::remove_texi($node);
556 # $node =~ s/[^\w\.\-]/-/g;
558 # my $file_basename = $node;
559 # $file_basename = $TOP_NODE_FILE if ($node =~ /^top$/i);
560 # if ($NEW_CROSSREF_STYLE)
564 # return $file . $file_basename . ".$NODE_FILE_EXTENSION" . '#' . $target;
568 # return $file . '#' . $target;
573 # return $file . $file_basename . ".$NODE_FILE_EXTENSION";
576 return &$original_func($node, $node_id, $node_hxmlt_id, $file);
578 return &$original_func($node, $node_id, $node_hxmlt_id);
586 #############################################################################
587 ### CUSTOM TOC FOR EACH PAGE (in a frame on the left)
588 #############################################################################
590 my $page_toc_depth = 2;
591 my @default_toc = [];
593 # recursively generate the TOC entries for the element and its children (which
594 # are only shown up to maxlevel. All ancestors of the current element are also
595 # shown with their immediate children, irrespective of their level.
596 # Unnumbered entries are only printed out if they are at top-level or their
597 # parent element is an ancestor of the currently viewed node.
598 sub generate_ly_toc_entries($$$$)
601 my $element_path = shift;
602 my $maxlevel = shift;
603 my $always_show_unnumbered_children = shift;
604 # Skip undefined sections, plus all sections generated by index splitting
605 return() if (not defined($element) or exists($element->{'index_page'}));
607 my $level = $element->{'toc_level'};
608 my $is_parent_of_current = $element->{'id'} && $element_path->{$element->{'id'}};
609 my $print_children = ( ($level < $maxlevel) or $is_parent_of_current );
610 my $ind = ' ' x $level;
611 my $this_css_class = $is_parent_of_current ? " class=\"toc_current\"" : "";
613 my $entry = "$ind<li$this_css_class>" . &$anchor ($element->{'tocid'}, "$element->{'file'}#$element->{'id'}",$element->{'text'});
615 my $children = $element->{'section_childs'};
616 # Don't add unnumbered entries, unless they are at top-level or a parent of the current!
617 if (not ($element->{'number'} or $always_show_unnumbered_children)) {
620 if ( $print_children and defined($children) and (ref($children) eq "ARRAY") ) {
621 push (@result, $entry);
622 my @child_result = ();
623 foreach (@$children) {
624 push (@child_result, generate_ly_toc_entries($_, $element_path, $maxlevel, $is_parent_of_current));
626 # if no child nodes were generated, e.g. for the index, where expanded pages
627 # are ignored, don't generate a list at all...
629 push (@result, "\n$ind<ul$NO_BULLET_LIST_ATTRIBUTE>\n");
630 push (@result, @child_result);
631 push (@result, "$ind</ul></li>\n");
634 push (@result, $entry . "</li>\n");
640 # Print a customized TOC, containing only the first two levels plus the whole
641 # path to the current page
642 sub lilypond_generate_page_toc_body($)
645 my $current_element = $element;
647 $parentelements{$element->{'id'}} = 1;
648 # Find the path to the current element
649 while ( defined($current_element->{'sectionup'}) and
650 ($current_element->{'sectionup'} ne $current_element) )
652 $parentelements{$current_element->{'sectionup'}->{'id'}} = 1
653 if ($current_element->{'sectionup'}->{'id'} ne '');
654 $current_element = $current_element->{'sectionup'};
656 return () if not defined($current_element);
657 # Create the toc entries recursively
658 my @toc_entries = ("<div class=\"contents\">\n", "<ul$NO_BULLET_LIST_ATTRIBUTE>\n");
659 my $children = $current_element->{'section_childs'};
660 foreach ( @$children ) {
661 push (@toc_entries, generate_ly_toc_entries($_, \%parentelements, $page_toc_depth, False));
663 push (@toc_entries, "</ul>\n");
664 push (@toc_entries, "</div>\n");
668 sub lilypond_print_toc_div ($$)
672 my @lines = @$tocref;
673 # use default TOC if no custom lines have been generated
674 @lines = @default_toc if (not @lines);
676 print $fh "\n\n<div id=\"tocframe\">\n";
677 print $fh '<h4> ' . $Texi2HTML::NAME{'Contents'} . "</h4>\n";
678 foreach my $line (@lines) {
681 print $fh "</div>\n\n";
685 # Create the custom TOC for this page (partially folded, current page is
686 # highlighted) and store it in a global variable. The TOC is written out after
687 # the html contents (but positioned correctly using CSS), so that browsers with
688 # css turned off still show the contents first.
689 our @this_page_toc = ();
690 sub lilypond_print_element_header
693 my $first_in_page = shift;
694 my $previous_is_top = shift;
695 if ($first_in_page and not @this_page_toc) {
696 if (defined($Texi2HTML::THIS_ELEMENT)) {
697 # Create the TOC for this page
698 @this_page_toc = lilypond_generate_page_toc_body($Texi2HTML::THIS_ELEMENT);
701 return T2H_DEFAULT_print_element_header( $fh, $first_in_page, $previous_is_top);
704 # Generate the HTML output for the TOC
705 sub lilypond_toc_body($)
707 my $elements_list = shift;
708 # Generate a default TOC for pages without THIS_ELEMENT
709 @default_toc = lilypond_generate_page_toc_body(@$elements_list[0]);
710 return T2H_GPL_toc_body($elements_list);
713 # Print out the TOC in a <div> at the beginning of the page
714 sub lilypond_print_page_head($)
717 T2H_DEFAULT_print_page_head($fh);
718 print $fh "<div id=\"main\">\n";
721 # Print out the TOC in a <div> at the end of th page, which will be formatted as a
722 # sidebar mimicking a TOC frame
723 sub print_lilypond_page_foot($)
726 my $program_string = &$program_string();
727 print $fh "<p><font size='-1'>$program_string</font><br>$PRE_BODY_CLOSE</p>\n";
728 print $fh "<!-- FOOTER -->\n\n";
729 print $fh "<!-- end div#main here -->\n</div>\n\n";
731 # Print the TOC frame and reset the TOC:
732 lilypond_print_toc_div ($fh, \@this_page_toc);
736 print $fh "</body>\n</html>\n";
743 #############################################################################
744 ### NICER / MORE FLEXIBLE NAVIGATION PANELS
745 #############################################################################
747 sub get_navigation_text
750 my $text = $NAVIGATION_TEXT{$button};
751 if ( ($button eq 'Back') or ($button eq 'FastBack') ) {
752 $text = $text . $Texi2HTML::NODE{$button} . " ";
753 } elsif ( ($button eq 'Forward') or ($button eq 'FastForward') ) {
754 $text = " " . $Texi2HTML::NODE{$button} . $text;
755 } elsif ( $button eq 'Up' ) {
756 $text = " ".$text.": " . $Texi2HTML::NODE{$button} . " ";
762 # Don't automatically create left-aligned table cells for every link, but
763 # instead create a <td> only on an appropriate '(left|right|center)-aligned-cell-n'
764 # button text. It's alignment as well as the colspan will be taken from the
765 # name of the button. Also, add 'newline' button text to create a new table
766 # row. The texts of the buttons are generated by get_navigation_text and
767 # will contain the name of the next/previous section/chapter.
768 sub lilypond_print_navigation
772 my $vertical = shift;
774 # print $fh '<table cellpadding="', $spacing, '" cellspacing="', $spacing,
775 # "\" border=\"0\" class=\"nav_table\">\n";
776 print $fh "<table class=\"nav_table\">\n";
778 print $fh "<tr>" unless $vertical;
780 foreach my $button (@$buttons)
782 print $fh qq{<tr valign="top" align="left">\n} if $vertical;
783 # Allow (left|right|center)-aligned-cell and newline as buttons!
784 if ( $button =~ /^(.*)-aligned-cell-(.*)$/ )
786 print $fh qq{</td>} unless $beginofline;
787 print $fh qq{<td valign="middle" align="$1" colspan="$2">};
790 elsif ( $button eq 'newline' )
792 print $fh qq{</td>} unless $beginofline;
798 elsif (ref($button) eq 'CODE')
800 &$button($fh, $vertical);
802 elsif (ref($button) eq 'SCALAR')
804 print $fh "$$button" if defined($$button);
806 elsif (ref($button) eq 'ARRAY')
808 my $text = $button->[1];
809 my $button_href = $button->[0];
810 # verify that $button_href is simple text and text is a reference
811 if (defined($button_href) and !ref($button_href)
812 and defined($text) and (ref($text) eq 'SCALAR') and defined($$text))
814 if ($Texi2HTML::HREF{$button_href})
816 my $anchor_attributes = '';
817 if ($USE_ACCESSKEY and (defined($BUTTONS_ACCESSKEY{$button_href})) and ($BUTTONS_ACCESSKEY{$button_href} ne ''))
819 $anchor_attributes = "accesskey=\"$BUTTONS_ACCESSKEY{$button_href}\"";
821 if ($USE_REL_REV and (defined($BUTTONS_REL{$button_href})) and ($BUTTONS_REL{$button_href} ne ''))
823 $anchor_attributes .= " rel=\"$BUTTONS_REL{$button_href}\"";
827 $Texi2HTML::HREF{$button_href},
828 get_navigation_text($$text),
834 print $fh get_navigation_text($$text);
838 elsif ($button eq ' ')
839 { # handle space button
841 ($ICONS && $ACTIVE_ICONS{' '}) ?
842 &$button_icon_img($BUTTONS_NAME{$button}, $ACTIVE_ICONS{' '}) :
843 $NAVIGATION_TEXT{' '};
846 elsif ($Texi2HTML::HREF{$button})
848 my $btitle = $BUTTONS_GOTO{$button} ?
849 'title="' . $BUTTONS_GOTO{$button} . '"' : '';
850 if ($USE_ACCESSKEY and (defined($BUTTONS_ACCESSKEY{$button})) and ($BUTTONS_ACCESSKEY{$button} ne ''))
852 $btitle .= " accesskey=\"$BUTTONS_ACCESSKEY{$button}\"";
854 if ($USE_REL_REV and (defined($BUTTONS_REL{$button})) and ($BUTTONS_REL{$button} ne ''))
856 $btitle .= " rel=\"$BUTTONS_REL{$button}\"";
858 if ($ICONS && $ACTIVE_ICONS{$button})
862 $Texi2HTML::HREF{$button},
863 &$button_icon_img($BUTTONS_NAME{$button},
864 $ACTIVE_ICONS{$button},
865 $Texi2HTML::SIMPLE_TEXT{$button}),
874 $Texi2HTML::HREF{$button},
875 get_navigation_text ($button),
882 { # button is passive
884 $ICONS && $PASSIVE_ICONS{$button} ?
885 &$button_icon_img($BUTTONS_NAME{$button},
886 $PASSIVE_ICONS{$button},
887 $Texi2HTML::SIMPLE_TEXT{$button}) :
889 "[" . get_navigation_text($button) . "]";
891 print $fh "</td>\n" if $vertical;
892 print $fh "</tr>\n" if $vertical;
894 print $fh "</td>" unless $beginofline;
895 print $fh "</tr>" unless $vertical;
896 print $fh "</table>\n";
900 @Texi2HTML::Config::SECTION_BUTTONS =
901 ('left-aligned-cell-1', 'FastBack',
902 'center-aligned-cell-3', 'Top', 'Contents', 'Index', 'About',
903 'right-aligned-cell-1', 'FastForward',
905 'left-aligned-cell-2', 'Back',
906 'center-aligned-cell-1', 'Up',
907 'right-aligned-cell-2', 'Forward'
910 # buttons for misc stuff
911 @Texi2HTML::Config::MISC_BUTTONS = ('center-aligned-cell-3', 'Top', 'Contents', 'Index', 'About');
913 # buttons for chapter file footers
914 # (and headers but only if SECTION_NAVIGATION is false)
915 @Texi2HTML::Config::CHAPTER_BUTTONS =
916 ('left-aligned-cell-1', 'FastBack',
917 'center-aligned-cell-3', 'Top', 'Contents', 'Index', 'About',
918 'right-aligned-cell-1', 'FastForward',
921 # buttons for section file footers
922 @Texi2HTML::Config::SECTION_FOOTER_BUTTONS =
923 ('left-aligned-cell-1', 'FastBack',
924 'center-aligned-cell-3', 'Top', 'Contents', 'Index', 'About',
925 'right-aligned-cell-1', 'FastForward',
927 'left-aligned-cell-2', 'Back',
928 'center-aligned-cell-1', 'Up',
929 'right-aligned-cell-2', 'Forward'
932 @Texi2HTML::Config::NODE_FOOTER_BUTTONS =
933 ('left-aligned-cell-1', 'FastBack',
934 'center-aligned-cell-3', 'Top', 'Contents', 'Index', 'About',
935 'right-aligned-cell-1', 'FastForward',
937 'left-aligned-cell-2', 'Back',
938 'center-aligned-cell-1', 'Up',
939 'right-aligned-cell-2', 'Forward'
946 #############################################################################
948 #############################################################################
950 # For split pages, use index.html as start page!
951 if ($Texi2HTML::Config::SPLIT == 'section') {
952 $Texi2HTML::Config::TOP_FILE = 'index.html';