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#! perl |
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use strict; |
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use warnings; |
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package Music::ChordBot::Opus::Section; |
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=head1 NAME |
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Music::ChordBot::Opus::Section - ChordBot song section. |
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=cut |
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our $VERSION = 0.01; |
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use parent 'Music::ChordBot::Opus::Base'; |
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use Music::ChordBot::Opus::Section::Chord; |
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use Music::ChordBot::Opus::Section::Style; |
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2038
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=head1 SYNOPSIS |
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use Music::ChordBot::Opus::Section; |
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my $sect = Music::ChordBot::Opus::Section->new; |
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$sect->name("First movement"); |
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$sect->set_style("Kubiac"); |
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$sect->add_chord(...); |
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$sect->add_chord(...); |
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=cut |
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#### TODO: Repeat sections. |
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# |
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# A repeat section has a name, optionally a style, and no chords. The |
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# field 'repeat' contains the index of the original section that is to |
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# be repeated. This can be tricky when inserting/deleting sections. |
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=head1 METHODS |
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=head2 new [ args ] |
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Creates a new Music::ChordBot::Opus::Section object. |
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Initial attributes may be passed as a hash. |
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Attributes: |
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=over 4 |
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=item name |
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The name of the section. |
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=item chords |
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An arrayref containing Music::ChordBot::Opus::Section::Chord objects, |
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more commonly known as 'chords', |
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=item style |
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A hashref representing the attributes of a style. See |
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L. |
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=cut |
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66
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sub new { |
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my $pkg = shift; |
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my $data = { name => "Section 1", |
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chords => [], |
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style => { chorus => 4, reverb => 8, |
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tracks => [ { volume => 7, id => 95 } ] }, |
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@_ }; |
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bless { data => $data }, $pkg; |
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} |
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=head2 name [ I ] |
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Sets or gets the name of the section. |
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=cut |
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sub name { shift->_setget( "name", @_ ) } |
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=head2 add_chord I |
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Adds a chord to the section. |
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I must be a Music::ChordBot::Opus::Section::Chord object, or a |
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string denoting a chord, e.g. "C Maj 4". For convenience, the three |
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elements may also be passed separately, e.g., C
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4)>. |
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93
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A bass note can be specified by adding the note to the key, separated |
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by a slash, e.g., C<"C/B">. |
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96
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=cut |
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sub add_chord { |
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1
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my ( $self, $chord ) = @_; |
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my $ok = 0; |
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eval { push( @{$self->{data}->{chords}}, $chord->{data} ); $ok = 1 }; |
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551
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return if $ok; |
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48
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shift; |
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push( @{$self->{data}->{chords}}, |
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240
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105
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Music::ChordBot::Opus::Section::Chord->new(@_)->data ); |
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} |
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108
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sub chords { |
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wantarray |
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0
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? @{ $_[0]->{data}->{chords} } |
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0
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0
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111
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: $_[0]->{data}->{chords}; |
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} |
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114
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=head2 no_style |
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116
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A newly created Music::ChordBot::Opus::Section object has a default |
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style associated. Calling this method removes the style from the |
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118
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section. |
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=cut |
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122
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sub no_style { |
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delete $_[0]->{data}->{style}; |
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} |
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126
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=head2 set_style [ I |