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|
# /=====================================================================\ #
# | LaTeXML::Core::Alignment | #
# | Support for tabular/array environments | #
# |=====================================================================| #
# | Part of LaTeXML: | #
# | Public domain software, produced as part of work done by the | #
# | United States Government & not subject to copyright in the US. | #
# |---------------------------------------------------------------------| #
# | Bruce Miller <bruce.miller@nist.gov> #_# | #
# | http://dlmf.nist.gov/LaTeXML/ (o o) | #
# \=========================================================ooo==U==ooo=/ #
package LaTeXML::Core::Alignment::Template;
use strict;
use warnings;
use base qw(LaTeXML::Common::Object);
use LaTeXML::Global;
use LaTeXML::Common::Object;
use LaTeXML::Core::Token;
use LaTeXML::Core::Tokens;
sub new {
my ($class, %data) = @_;
$data{columns} = [] unless $data{columns};
$data{repeating} = 1 if $data{repeating} || $data{repeated};
$data{repeated} = [] unless $data{repeated};
$data{non_repeating} = scalar(@{ $data{columns} });
$data{save_before} = [] unless $data{save_before};
$data{save_between} = [] unless $data{save_between}; # between comes before before!
map { $$_{empty} = 1 } @{ $data{columns} };
map { $$_{empty} = 1 } @{ $data{repeated} };
return bless {%data}, $class; }
sub revert {
my ($self) = @_;
return @{ $$self{tokens} }; }
# Methods for constructing a template.
sub setReversion {
my ($self, @tokens) = @_;
$$self{tokens} = [@tokens];
return; }
sub setRepeating {
my ($self) = @_;
$$self{repeating} = 1;
return; }
# These add material before & after the current column
sub addBeforeColumn {
my ($self, @tokens) = @_;
unshift(@{ $$self{save_before} }, @tokens); # NOTE: goes all the way to front!
return; }
# NOTE: \lx@column@trimright should ONLY be added to LaTeX tabular style templates!!!!
# NOT \halign style templates!
sub addAfterColumn {
my ($self, @tokens) = @_;
$$self{current_column}{after} = Tokens(T_CS('\lx@column@trimright'),
@tokens, @{ $$self{current_column}{after} });
return; }
# Or between this column & next...
sub addBetweenColumn {
my ($self, @tokens) = @_;
my @cols = @{ $$self{columns} };
if (my $col = $$self{current_column}) {
if (!$$self{disabled_intercolumn}) {
unshift(@tokens, T_CS('\lx@intercol')); }
$$self{current_column}{after} = Tokens(@{ $$self{current_column}{after} }, @tokens); }
else {
push(@{ $$self{save_between} }, @tokens); }
return; }
sub disableIntercolumn {
my ($self) = @_;
if (my $col = $$self{current_column}) {
$$self{disabled_intercolumn} = 1; }
return; }
sub addColumn {
my ($self, %properties) = @_;
my $col = {%properties};
if (my $prev = $$self{current_column}) {
$$prev{after} = Tokens(($$prev{after} || ()), T_CS('\lx@intercol'))
unless $$self{disabled_intercolumn}; }
my @before = ();
push(@before, @{ $$self{save_between} }) if $$self{save_between};
push(@before, T_CS('\lx@intercol')) unless $$self{disabled_intercolumn};
delete $$self{disabled_intercolumn};
push(@before, $properties{before}->unlist) if $properties{before};
push(@before, @{ $$self{save_before} }) if $$self{save_before};
$$col{before} = Tokens(@before);
my @after = ();
push(@after, T_CS('\lx@column@trimright'));
push(@after, $properties{after}->unlist) if $properties{after};
$$col{after} = Tokens(@after);
$$col{thead} = $properties{thead};
$$col{empty} = 1;
$$self{save_between} = [];
$$self{save_before} = [];
$$self{current_column} = $col;
if ($$self{repeating}) {
$$self{non_repeating} = scalar(@{ $$self{columns} });
push(@{ $$self{repeated} }, $col); }
else {
push(@{ $$self{columns} }, $col); }
return; }
sub finish {
my ($self) = @_;
if (my $prev = $$self{current_column}) {
$$prev{after} = Tokens(($$prev{after} || ()), T_CS('\lx@intercol'))
unless $$self{disabled_intercolumn}; }
return; }
# Methods for using a template.
sub clone {
my ($self) = @_;
my @dup = ();
foreach my $cell (@{ $$self{columns} }) {
push(@dup, {%$cell}); }
return bless { columns => [@dup],
repeated => $$self{repeated}, non_repeating => $$self{non_repeating},
repeating => $$self{repeating} }, ref $self; }
sub show {
my ($self) = @_;
my @strings = ();
push(@strings, "\nColumns:\n");
foreach my $col (@{ $$self{columns} }) {
push(@strings, "\n{" . join(', ', map { "$_=>" . Stringify($$col{$_}) } sort keys %$col) . '}'); }
if ($$self{repeating}) {
push(@strings, "\nRepeated Columns:\n");
foreach my $col (@{ $$self{repeated} }) {
push(@strings, "\n{" . join(', ', map { "$_=>" . Stringify($$col{$_}) } sort keys %$col) . '}'); } }
return join(', ', @strings); }
sub column {
my ($self, $n) = @_;
my $N = scalar(@{ $$self{columns} });
if (($n > $N) && $$self{repeating}) {
my @rep = @{ $$self{repeated} };
if (my $m = scalar(@rep)) {
for (my $i = $N ; $i < $n ; $i++) {
my %dup = %{ $rep[($i - $$self{non_repeating}) % $m] };
push(@{ $$self{columns} }, {%dup}); } } }
return ($n > 0 ? $$self{columns}->[$n - 1] : undef); }
sub columns {
my ($self) = @_;
return @{ $$self{columns} }; }
#======================================================================
1;
|
