Introduce LaTeX::TikZ::Functor

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

diff --git a/lib/LaTeX/TikZ/Set/Rectangle.pm b/lib/LaTeX/TikZ/Set/Rectangle.pm
index 88af295a570f21ec08cab917a3044279e7f7595d..f70595d6d075670edb7b2fbc59c6c4dd78c7ddb2 100644 (file)
--- a/lib/LaTeX/TikZ/Set/Rectangle.pm
+++ b/lib/LaTeX/TikZ/Set/Rectangle.pm
@@ -15,20 +15,26 @@ Version 0.01
 
 our $VERSION = '0.01';
 
+use LaTeX::TikZ::Set::Point;
+
+use LaTeX::TikZ::Functor;
+
 use Any::Moose;
 
 with 'LaTeX::TikZ::Set::Op';
 
 has 'from' => (
  is       => 'ro',
- does     => 'LaTeX::TikZ::Point',
+ isa      => 'LaTeX::TikZ::Set::Point',
  required => 1,
+ coerce   => 1,
 );
 
 has 'to' => (
  is       => 'ro',
- does     => 'LaTeX::TikZ::Point',
+ isa      => 'LaTeX::TikZ::Set::Point',
  required => 1,
+ coerce   => 1,
 );
 
 has 'width' => (
@@ -47,14 +53,14 @@ sub path {
  $set->from->path(@_) . ' rectangle ' . $set->to->path(@_);
 }
 
+my $meta = __PACKAGE__->meta;
+my $tc1  = $meta->find_attribute_by_name('from')->type_constraint;
+my $tc2  = $meta->find_attribute_by_name('to')->type_constraint;
+
 around 'BUILDARGS' => sub {
  my $orig  = shift;
  my $class = shift;
 
- my $meta = __PACKAGE__->meta;
- my $tc1  = $meta->find_attribute_by_name('from')->type_constraint;
- my $tc2  = $meta->find_attribute_by_name('to')->type_constraint;
-
  if (@_ == 2 and $tc1->check($_[0]) and $tc2->check($_[1])) {
   @_ = (
    from => $_[0],
@@ -62,14 +68,18 @@ around 'BUILDARGS' => sub {
   );
  } else {
   my %args = @_;
-  if (not exists $args{to}
-      and exists $args{from} and $tc1->check($args{from})) {
+  if (not exists $args{to} and exists $args{from}) {
    confess(<<'   MSG') unless exists $args{width} and exists $args{height};
 Attributes 'width' and 'height' are required when 'to' was not given
    MSG
+   $args{from} = $tc1->coerce($args{from});
    $meta->find_attribute_by_name($_)->type_constraint->assert_valid($args{$_})
-                                                           for qw/width height/;
-   $args{to} = $args{from}->translate($args{width}, $args{height});
+                                                      for qw/from width height/;
+   my $p = $args{from}->point;
+   $args{to} = LaTeX::TikZ::Point->new(
+    x => $p->x + $args{width},
+    y => $p->y + $args{height},
+   );
    @_ = %args;
   }
  }
@@ -81,14 +91,21 @@ use LaTeX::TikZ::Interface rectangle => sub {
  shift;
  my ($p, $q) = @_;
 
- my $is_relative = !blessed($q) && ref($q) eq 'ARRAY';
+ my $is_relative = !blessed($q) && ref($q) eq 'HASH';
 
  __PACKAGE__->new(
   from => $p,
-  ($is_relative ? (width => $q->[0], height => $q->[1]) : (to => $q)),
+  ($is_relative ? (map +($_ => $q->{$_}), qw/width height/) : (to => $q)),
  );
 };
 
+LaTeX::TikZ::Functor->default_rule(
+ (__PACKAGE__) => sub {
+  my ($functor, $set, @args) = @_;
+  $set->new(map { $_ => $set->$_->$functor(@args) } qw/from to/)
+ }
+);
+
 __PACKAGE__->meta->make_immutable;
 
 =head1 AUTHOR