our $VERSION = '0.01';
-use LaTeX::TikZ::Set::Mod;
+use Scope::Guard ();
+
+use LaTeX::TikZ::Scope;
use LaTeX::TikZ::Tools;
draw
);
-sub mod {
- my $set = $_[0];
+has '_mods' => (
+ is => 'ro',
+ isa => 'Maybe[ArrayRef[LaTeX::TikZ::Mod]]',
+ init_arg => 'mods',
+ default => sub { [ ] },
+ lazy => 1,
+);
- return $set unless @_ > 1;
+sub mods { @{$_[0]->_mods} }
- # If $set is already a Tikz::Set::Mod object, the overridden method is
- # called instead. This ensures that you can't have two T::S::M objects in a
- # row.
+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');
- # Prepend a new set with the mods
- my $new = LaTeX::TikZ::Set::Mod->new(
- set => $set,
- mods => [ @_[1 .. $#_] ],
- );
+sub mod {
+ my $set = shift;
- $_[0] = $new unless defined wantarray;
+ push @{$set->_mods},
+ map { $ltm_tc->check($_) ? $_ : $ltm_tc->coerce($_) }
+ @_;
- $new;
+ $set;
}
-my $ltml_tc = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod::Layer');
-my $ltmc_tc = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod::Clip');
+{
+ 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) = @_;
+
+ local $last_mod = $last_mod;
+
+ # 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 = $set->mods_unique;
+
+ my $body = $set->$orig($tikz);
+
+ if (@mods) {
+ $body = LaTeX::TikZ::Scope->new
+ ->mod(map $_->apply($tikz), @mods)
+ ->body($body);
+ }
+
+ $body;
+ };
+}
sub layer {
return $_[0] unless @_ > 1;