Make sure POD headings are linkable

[perl/modules/LaTeX-TikZ.git] / lib / LaTeX / TikZ / Set.pm

diff --git a/lib/LaTeX/TikZ/Set.pm b/lib/LaTeX/TikZ/Set.pm
index e719643a3a7fea5d64c81efd4cd873da5ee2fd4e..3d8112f91b0a15cb8d652c2d0e812ed44688a8d5 100644 (file)
--- a/lib/LaTeX/TikZ/Set.pm
+++ b/lib/LaTeX/TikZ/Set.pm
@@ -9,23 +9,26 @@ LaTeX::TikZ::Set - Base role for LaTeX::TikZ set objects.
 
 =head1 VERSION
 
-Version 0.01
+Version 0.02
 
 =cut
 
-our $VERSION = '0.01';
-
-use Scope::Guard ();
+our $VERSION = '0.02';
 
+use LaTeX::TikZ::Context;
 use LaTeX::TikZ::Scope;
 
 use LaTeX::TikZ::Tools;
 
-use Any::Moose 'Role';
+use Mouse::Role;
 
-requires qw(
- draw
-);
+=head1 ATTRIBUTES
+
+=head2 C<mods>
+
+Returns the list of the L<LaTeX::TikZ::Mod> objects associated with the current set.
+
+=cut
 
 has '_mods' => (
  is       => 'ro',
@@ -37,6 +40,35 @@ has '_mods' => (
 
 sub mods { @{$_[0]->_mods} }
 
+=head1 METHODS
+
+This method is required by the interface :
+
+=over 4
+
+=item *
+
+C<draw $formatter, $context>
+
+Returns an array reference of TikZ code lines required to effectively draw the current set object, formatted by the L<LaTeX::TikZ::Formatter> object C<$formatter>.
+The current evaluation context is passed as the L<LaTeX::TikZ::Context> object C<$context>.
+
+=back
+
+=cut
+
+requires qw<
+ draw
+>;
+
+=head2 C<mod>
+
+    $set->mod(@mods)
+
+Apply the given list of L<LaTeX::TikZ::Mod> objects to the current set.
+
+=cut
+
 my $ltm_tc  = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod');
 my $ltml_tc = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod::Layer');
 my $ltmc_tc = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod::Clip');
@@ -44,94 +76,81 @@ my $ltmc_tc = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod::Clip');
 sub mod {
  my $set = shift;
 
- push @{$set->_mods},
-  map { $ltm_tc->check($_) ? $_ : $ltm_tc->coerce($_) }
-   @_;
+ my @mods = map $ltm_tc->coerce($_), @_;
+ $ltm_tc->assert_valid($_) for @mods;
+
+ push @{$set->_mods}, @mods;
 
  $set;
 }
 
-{
- our %mods;
- our $last_mod = 0;
-
- sub mods_unique {
-  my ($set) = @_;
-
-  my (@mods, $has_layer);
-MOD:
-  for my $mod ($set->mods) {
-   $has_layer = 1 if $ltml_tc->check($mod);
-   my $tag = $mod->tag;
-   my $old = $mods{$tag} || [];
-   for (@$old) {
-    next MOD if $_->[0]->cover($mod);
-   }
-   push @{$mods{$tag}}, [ $mod, $last_mod++ ];
-   push @mods,          $mod;
-  }
-
-  if ($has_layer) {
-   # Clips and mods don't propagate through layers. Hence if a layer is set,
-   # force their reuse.
-   @mods = map $_->[0], sort { $a->[1] <=> $b->[1] } map @$_, values %mods;
-  }
-
-  return @mods;
- }
+around 'draw' => sub {
+ my ($orig, $set, $tikz, $pcxt) = @_;
 
- around 'draw' => sub {
-  my ($orig, $set, $tikz) = @_;
+ my $cxt = LaTeX::TikZ::Context->new(
+  parent => $pcxt,
+  mods   => [ $set->mods ],
+ );
 
-  local $last_mod = $last_mod;
+ my $body = $set->$orig($tikz, $cxt);
 
-  # Save a deep copy
-  my %saved_idx = map { $_ => $#{$mods{$_}} } keys %mods;
-  my $guard     = Scope::Guard->new(sub {
-   for (keys %mods) {
-    if (exists $saved_idx{$_}) {
-     $#{$mods{$_}} = $saved_idx{$_};
-    } else {
-     delete $mods{$_};
-    }
-   }
-  });
+ my @mods = $cxt->effective_mods;
+ if (@mods) {
+  $body = LaTeX::TikZ::Scope->new(
+   mods => [ map $_->apply($tikz), @mods ],
+   body => $body,
+  );
+ }
 
-  my @mods = $set->mods_unique;
+ $body;
+};
 
-  my $body = $set->$orig($tikz);
+=head2 C<layer>
 
-  if (@mods) {
-   $body = LaTeX::TikZ::Scope->new
-                             ->mod(map $_->apply($tikz), @mods)
-                             ->body($body);
-  }
+    $set->layer($layer)
 
-  $body;
- };
-}
+Puts the current set in the corresponding layer.
+This is a shortcut for C<< $set->mod(Tikz->layer($layer)) >>.
+
+=cut
 
 sub layer {
- return $_[0] unless @_ > 1;
+ my $set = shift;
 
- my $layer = $_[1];
+ return $set unless @_;
 
- $_[0]->mod(
+ my $layer = $_[0];
+ $set->mod(
   $ltml_tc->check($layer) ? $layer
                           : LaTeX::TikZ::Mod::Layer->new(name => $layer)
  )
 }
 
+=head2 C<clip>
+
+    $set->clip($path)
+
+Clips the current set by the path given by C<$path>.
+This is a shortcut for C<< $set->mod(Tikz->clip($path)) >>.
+
+=cut
+
 sub clip {
- return $_[0] unless @_ > 1;
+ my $set = shift;
+
+ return $set unless @_;
 
- $_[0]->mod(
+ $set->mod(
   map {
-   $ltmc_tc->check($_) ? $_ : LaTeX::TikZ::Mod::Clip->new($_)
-  } @_[1 .. $#_]
+   $ltmc_tc->check($_) ? $_ : LaTeX::TikZ::Mod::Clip->new(clip => $_)
+  } @_
  )
 }
 
+=head1 SEE ALSO
+
+L<LaTeX::TikZ>.
+
 =head1 AUTHOR
 
 Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
@@ -151,7 +170,7 @@ You can find documentation for this module with the perldoc command.
 
 =head1 COPYRIGHT & LICENSE
 
-Copyright 2010 Vincent Pit, all rights reserved.
+Copyright 2010,2011,2012,2013,2014,2015 Vincent Pit, all rights reserved.
 
 This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.