Enforce the non-negativity of some attributes with anonymous types

[perl/modules/LaTeX-TikZ.git] / lib / LaTeX / TikZ / Mod / Pattern / Dots.pm

diff --git a/lib/LaTeX/TikZ/Mod/Pattern/Dots.pm b/lib/LaTeX/TikZ/Mod/Pattern/Dots.pm
index 3fea8a6b08bd863e5b9384f64b05e83eb788dd1c..45714b1f3b0a5c71d1949594b0329067e85f8f48 100644 (file)
--- a/lib/LaTeX/TikZ/Mod/Pattern/Dots.pm
+++ b/lib/LaTeX/TikZ/Mod/Pattern/Dots.pm
@@ -18,18 +18,19 @@ our $VERSION = '0.01';
 use Sub::Name ();
 
 use Any::Moose;
+use Any::Moose 'Util::TypeConstraints';
 
 extends 'LaTeX::TikZ::Mod::Pattern';
 
 has 'dot_width' => (
  is      => 'ro',
- isa     => 'Int',
+ isa     => subtype('Num' => where { LaTeX::TikZ::Tools::numcmp($_, 0) >= 0 }),
  default => 1,
 );
 
 has 'space_width' => (
  is      => 'ro',
- isa     => 'Int',
+ isa     => subtype('Num' => where { LaTeX::TikZ::Tools::numcmp($_, 0) >= 0 }),
  default => 1,
 );
 
@@ -53,16 +54,16 @@ my $forge_template = Sub::Name::subname('forge_template' => sub {
  $center     = "\\pgfqpoint{$half_width}{$half_width}";
  $tile_size  = "\\pgfqpoint{$width}{$width}";
 
- <<" PATTERN";
-\\pgfdeclarepatternformonly{#NAME#}{$low_left}{$up_right}{$tile_size}{%
- \\pgfpathcircle{$center}{$dot_width}
- \\pgfusepath{fill}
-}
- PATTERN
+ return [
+  "\\pgfdeclarepatternformonly{#NAME#}{$low_left}{$up_right}{$tile_size}{",
+  "\\pgfpathcircle{$center}{$dot_width}",
+  "\\pgfusepath{fill}",
+  '}',
+ ];
 });
 
 around 'BUILDARGS' => sub {
- my ($orig, $class, %args);
+ my ($orig, $class, %args) = @_;
 
  confess('Can\'t specify an explicit template for a '. __PACKAGE__ .' pattern')
                                                       if exists $args{template};