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package PostScript::LabelSheet; |
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166094
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use warnings; |
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use strict; |
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6591
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use parent qw/ Class::Accessor /; |
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3063
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33845
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use Carp; |
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use File::Basename qw/ dirname /; |
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4660
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use Template; |
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181275
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4165
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our $VERSION = 0.02; |
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__PACKAGE__->mk_accessors(qw/ |
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columns rows |
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label_width label_height |
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width height |
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v_margin h_margin |
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v_spacing h_spacing |
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v_padding h_padding |
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skip fill_last_page grid |
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labels |
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postscript_skeleton |
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portrait |
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/ |
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); |
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sub set { |
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1
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4681
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my $self = shift; |
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258
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$self->SUPER::set(@_); |
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617
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return $self; |
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} |
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sub new { |
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1
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my $class = shift; |
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my $self = $class->SUPER::new(@_); |
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# Default values |
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3
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100
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55
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$self->width(595) unless defined $self->width(); # 210 mm (a4) |
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50
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$self->height(842) unless defined $self->height(); # 297 mm (a4) |
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50
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$self->v_margin(14.17) unless defined $self->v_margin(); # 5 mm |
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50
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$self->h_margin(14.17) unless defined $self->h_margin(); # 5 mm |
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50
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$self->v_spacing(0) unless defined $self->v_spacing(); |
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50
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$self->h_spacing(0) unless defined $self->h_spacing(); |
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50
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$self->v_padding(0) unless defined $self->v_padding(); |
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$self->h_padding(0) unless defined $self->h_padding(); |
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$self->skip(0) unless defined $self->skip(); |
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$self->fill_last_page(1) unless defined $self->fill_last_page(); |
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$self->grid(1) unless defined $self->grid(); |
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$self->portrait(1) unless defined $self->portrait(); |
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3
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return $self; |
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} |
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53
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sub label_height { |
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4
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1
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510
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my $self = shift; |
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4
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100
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24
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if ( @_ ) { |
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100
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1
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5
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$self->_rows_accessor(undef); |
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} |
58
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elsif ( !defined $self->_label_height_accessor() ) { |
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1
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15
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$self->_label_height_accessor( |
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($self->height() - $self->v_margin() * 2 + $self->v_spacing()) / $self->rows() - $self->v_spacing() |
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); |
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} |
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4
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33
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$self->_label_height_accessor(@_); |
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} |
65
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66
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sub label_width { |
67
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4
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4
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1
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468
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my $self = shift; |
68
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4
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100
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21
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if ( @_ ) { |
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100
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69
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1
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4
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$self->_columns_accessor(undef); |
70
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} |
71
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elsif ( !defined $self->_label_width_accessor() ) { |
72
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1
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48
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$self->_label_width_accessor( |
73
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($self->width() - $self->h_margin() * 2 + $self->h_spacing()) / $self->columns() - $self->h_spacing() |
74
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); |
75
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} |
76
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4
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31
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$self->_label_width_accessor(@_); |
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} |
78
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79
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sub rows { |
80
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11
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11
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1
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933
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my $self = shift; |
81
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11
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100
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38
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if ( @_ ) { |
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100
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82
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2
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26
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$self->_label_height_accessor(undef); |
83
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} |
84
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elsif ( !defined $self->_rows_accessor() ) { |
85
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1
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16
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$self->_rows_accessor( |
86
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int(($self->height() - $self->v_margin() * 2 + $self->v_spacing()) / ($self->label_height() + $self->v_spacing())) |
87
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); |
88
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} |
89
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11
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100
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$self->_rows_accessor(@_); |
90
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} |
91
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92
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sub columns { |
93
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11
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11
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1
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505
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my $self = shift; |
94
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11
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100
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43
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if ( @_ ) { |
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100
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95
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2
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8
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$self->_label_width_accessor(undef); |
96
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} |
97
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elsif ( !defined $self->_columns_accessor() ) { |
98
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1
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15
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$self->_columns_accessor( |
99
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int(($self->width() - $self->h_margin() * 2 + $self->h_spacing()) / ($self->label_width() + $self->h_spacing())) |
100
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); |
101
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} |
102
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11
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129
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$self->_columns_accessor(@_); |
103
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} |
104
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105
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sub _parse_eps_file { |
106
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5
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5
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13
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my ($self, $filename) = @_; |
107
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108
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5
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50
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373
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open my $eps_fh, '<', $filename |
109
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or croak "Cannot read $filename: $!"; |
110
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5
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23
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my %record = ( path => $filename ); |
111
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5
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11
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my $buffer = ''; |
112
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5
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139
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while ( <$eps_fh> ) { |
113
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318
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100
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18009
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@record{map "eps_bb_$_", qw/ ll_x ll_y ur_x ur_y/} = /(\d+)/g if /%%BoundingBox/; |
114
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318
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1256
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$buffer .= $_; |
115
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} |
116
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5
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96
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close $eps_fh; |
117
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5
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31
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$record{code} = $buffer; |
118
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5
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0
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33
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50
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if ( !$record{eps_bb_ll_x} |
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33
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33
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119
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&& !$record{eps_bb_ll_y} |
120
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&& !$record{eps_bb_ur_x} |
121
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&& !$record{eps_bb_ur_y} ) { |
122
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0
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0
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croak "No bounding box info found in $filename" |
123
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} |
124
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5
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36
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return \%record; |
125
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} |
126
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127
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sub add { |
128
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5
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5
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1
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8
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my $self = shift; |
129
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5
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29
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my ($eps, $count) = @_; |
130
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5
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100
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25
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$count ||= 1; |
131
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5
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100
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18
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my $label_aref = $self->labels || []; |
132
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5
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90
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my $eps_record = $self->_parse_eps_file($eps); |
133
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5
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13
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$eps_record->{count} = $count; |
134
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5
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12
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push @$label_aref, $eps_record; |
135
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136
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5
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28
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$self->labels($label_aref); |
137
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} |
138
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139
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sub _make_h_and_v_setter { |
140
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12
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12
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22
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my $setting_name = shift; |
141
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12
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22
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my $v_accessor = "v_$setting_name"; |
142
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12
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29
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my $h_accessor = "h_$setting_name"; |
143
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4
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4
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49
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no strict 'refs'; |
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4
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8
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4
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2566
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144
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*$setting_name = sub { |
145
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4
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4
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794
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my $self = shift; |
146
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4
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50
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11
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if ( @_ ) { |
147
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4
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13
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$self->$v_accessor(@_); |
148
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4
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13
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$self->$h_accessor(@_); |
149
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4
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14
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return $self; |
150
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} |
151
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else { |
152
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0
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0
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return $self->$h_accessor(); |
153
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} |
154
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} |
155
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12
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122
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} |
156
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_make_h_and_v_setter('margin'); |
157
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_make_h_and_v_setter('spacing'); |
158
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_make_h_and_v_setter('padding'); |
159
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160
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sub _install_dir { |
161
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0
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0
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0
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(my $module = __PACKAGE__ ) =~ s|::|/|g; |
162
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0
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0
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return dirname( $INC{"$module.pm"} ); |
163
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} |
164
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165
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sub count_labels_per_page { |
166
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5
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5
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1
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72
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my $self = shift; |
167
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5
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12
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return $self->columns() * $self->rows(); |
168
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} |
169
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170
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sub count_labels { |
171
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6
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6
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1
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894
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my $self = shift; |
172
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6
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9
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my $count = 0; |
173
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6
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7
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foreach ( @{$self->labels} ) { |
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6
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18
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174
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7
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73
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$count += $_->{count}; |
175
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} |
176
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6
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35
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return $count; |
177
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} |
178
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179
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sub _stretch_last_label { |
180
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2
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2
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3
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my $self = shift; |
181
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2
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6
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my $rest = ( $self->count_labels() + $self->skip() ) % $self->count_labels_per_page(); |
182
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2
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25
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$self->labels()->[-1]{count} += $self->count_labels_per_page() - $rest; |
183
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} |
184
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185
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sub _finalize { |
186
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4
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4
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298
|
my $self = shift; |
187
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4
|
100
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14
|
if ( $self->fill_last_page() ) { |
188
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2
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27
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$self->_stretch_last_label(); |
189
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} |
190
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} |
191
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192
|
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sub as_postscript { |
193
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0
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|
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0
|
1
|
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my $self = shift; |
194
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0
|
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0
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|
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my $template = $self->postscript_skeleton() || $self->_install_dir() . '/LabelSheet/LabelSheet.ps'; |
195
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0
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my $buffer = ''; |
196
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$self->_finalize(); |
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my $tt = new Template { ABSOLUTE => 1 }; |
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$tt->process($template, { sheet => $self }, \$buffer); |
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return $buffer; |
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} |
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=head1 NAME |
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PostScript::LabelSheet - print multiple labels on a sheet, starting from PostScript label template. |
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=head1 SYNOPSIS |
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use PostScript::LabelSheet; |
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my $sheet = new PostScript::LabelSheet; |
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$sheet->columns(3); # 3 labels abreast |
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$sheet->rows(10); # on 10 rows |
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# Or specify the dimensions of the labels, in PostScript points |
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# $sheet->label_width(...); $sheet->label_height(...); |
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$sheet->skip(5); # leave 5 labels blank |
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$sheet->add('/path/to/label_1.eps', 5); |
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$sheet->add('/path/to/label_2.eps', 3); |
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$sheet->add('/path/to/label_3.eps'); |
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$sheet->fill_last_page(1); # label_3 will fill the last sheet. |
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print $sheet->as_postscript(); |
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=head1 DESCRIPTION |
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=head2 Why this module? |
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I sometimes have to print a sheet of labels, each label bearing the same |
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design, for example to label jars of marmelade. I tried to do this with |
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OpenOffice.org writer, in a table. But I had to manually copy and paste the |
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design of the first label into every cell, and of course, if I changed the |
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design, the changes had to be reported manually to the other cells. And of |
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course, changing the dimensions, or adding a column or a row, need some manual |
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intervention. |
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This module is here to easily print a sheet (or sheets) of labels representing |
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a repeating pattern. Give it a design in Encapsulated PostScript (EPS), how |
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many labels you want, how big they should be or how many should fit in the |
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width and heigth of the page, and PostScript::LabelSheet generates the |
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PostScript code for you, which you can then directly print. |
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There are options to print several kinds of labels on the same sheet, each with |
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its own design, to draw a grid around the labels for cutting them, and to |
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control how they are laid out on the page. |
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Additionally, labels can be numbered. This can be useful to print numbered |
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tickets for a local event for instance. |
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=head2 Drawing the design |
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255
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Use inkscape (http://www.inkscape.org) to draw the design that you want to |
256
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print on each label. Keep the original in the SVG format, and export it as |
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Encapsulated PostScript for use with PostScript::LabelSheet. |
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259
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The size of the design is unimportant, as this is vector graphics, the |
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generated PostScript program will resize without losing quality so that it fits |
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within a label. What is important, however, is that the design occupies all the |
262
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space on the page. The easiest is to draw without giving any thought to the |
263
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page, then adjust the page size to the drawing. In inkscape, you can use the |
264
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Document Properties dialog box to let the page fit the design exactly (menu |
265
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File, Document Properties, in the Page tab, click the "Fit page to selection" |
266
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button). |
267
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268
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To save the design in EPS format, in inkscape, go to menu File, Save a copy, |
269
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and choose the "C" format. Inkscape will show |
270
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a dialog with options for the conversion to EPS. Do check the box "Make |
271
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bounding box around full page", so that the generated EPS code contains |
272
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information about the size of the design. PostScript::LabelSheet needs it to |
273
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work out the scale at which the design should be included on the page. |
274
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275
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=head2 Constructor |
276
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277
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=over 4 |
278
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279
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=item B |
280
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281
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Returns a new instance of PostScript::LabelSheet with all its attributes set to |
282
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the built-in default values. |
283
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284
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=back |
285
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286
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=head2 Accessors / Mutators |
287
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288
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The following methods are accessors when given no argument, and mutators when |
289
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given one. As accessor they return the corresponding attribute's value: |
290
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291
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print $sheet->width(); |
292
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293
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As mutators, they set the attribute's value, and return the |
294
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PostScript::LabelSheet instance itself, making it possible to stack several |
295
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calls to mutators: |
296
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297
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my $sheet = PostScript::LabelSheet->new() |
298
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|
->width(595) |
299
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->height(842) |
300
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->grid(0) |
301
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; |
302
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303
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=head2 Labels management |
304
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305
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=over 4 |
306
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307
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=item B |
308
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309
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=item B |
310
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311
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Give the number of columns and rows in which the labels should be laid out on |
312
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each page. The labels width and height will be calculated accordingly. |
313
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314
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=item B |
315
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316
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=item B |
317
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318
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Give the width and height of each label. The program will automatically |
319
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|
calculate how many labels will fit on each row and column. |
320
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321
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|
Either columns() or label_width(), and either row() or label_height(), must be |
322
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|
specified before invoking as_postscript(). |
323
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324
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=item B (defaults to true) |
325
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326
|
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Set this option to a true value to have the last label repeat until the end of |
327
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the last page. |
328
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329
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=back |
330
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331
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=head2 Layout |
332
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333
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=over 4 |
334
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335
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=item B |
336
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337
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=item B |
338
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339
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Dimensions of the page. Default to DIN A4 (S<< 210 E 297 mm >>). |
340
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341
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=item B |
342
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343
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=item B |
344
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345
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Vertical (top and bottom) and horizontal (left and right) margins. |
346
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Default to S<5 mm>. |
347
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Use margin() to set both v_margin() and h_margin() at the same time. |
348
|
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|
It is not possible to set the top margin independantly from the bottom |
349
|
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|
|
margin, nor the left margin independantly from the right one. |
350
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351
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=item B |
352
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353
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=item B |
354
|
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355
|
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|
Space left blank inside each label and around the design within. |
356
|
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|
Default to 0. |
357
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|
|
Use padding() to set both h_padding() and v_padding() at the same time. |
358
|
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|
359
|
|
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|
|
=item B |
360
|
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361
|
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|
=item B |
362
|
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363
|
|
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|
|
Space between columns (h_spacing()) or rows (v_spacing()) of labels. |
364
|
|
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|
|
|
|
Default to 0 (no space between rows and columns). |
365
|
|
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|
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|
|
Use spacing() to set both h_spacing() and v_spacing() at the same time. |
366
|
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367
|
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|
=item B |
368
|
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369
|
|
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|
|
Number of labels to leave blank at the top of the first page. The default is to |
370
|
|
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|
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|
|
start at the top left of the page. |
371
|
|
|
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|
|
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372
|
|
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|
|
=item B |
373
|
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374
|
|
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|
|
If set to a true value, the designs are rotated 90 degrees clockwise inside |
375
|
|
|
|
|
|
|
each label. Default to false. |
376
|
|
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|
|
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|
|
377
|
|
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|
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|
|
=item B |
378
|
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|
379
|
|
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|
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|
|
If set to a true value, a grid is drawn around the labels. This is the default. |
380
|
|
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|
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|
381
|
|
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|
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|
|
=back |
382
|
|
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|
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|
|
|
383
|
|
|
|
|
|
|
=head2 Miscellaneous |
384
|
|
|
|
|
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|
|
385
|
|
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|
|
|
|
=over 4 |
386
|
|
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387
|
|
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|
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|
|
=item B |
388
|
|
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389
|
|
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|
|
=item B |
390
|
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391
|
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|
=back |
392
|
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393
|
|
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|
=head2 Methods |
394
|
|
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|
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|
|
395
|
|
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|
|
|
|
=over 4 |
396
|
|
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397
|
|
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|
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|
|
=item B I, I |
398
|
|
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|
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|
|
|
399
|
|
|
|
|
|
|
Adds a design to the sheet of labels. I is the path to a file in the |
400
|
|
|
|
|
|
|
Encapsulated PostScript format. See the L section above for |
401
|
|
|
|
|
|
|
hints on how to make such a file. I is optional and defaults to 1. |
402
|
|
|
|
|
|
|
However, it fill_last_page() is set to a true value, the last design will be |
403
|
|
|
|
|
|
|
repeated until the end of the last page. |
404
|
|
|
|
|
|
|
|
405
|
|
|
|
|
|
|
Returns the instance of the PostScript::LabelSheet object, so calls can be |
406
|
|
|
|
|
|
|
stacked: |
407
|
|
|
|
|
|
|
|
408
|
|
|
|
|
|
|
$sheet->add('file1.eps', 5) |
409
|
|
|
|
|
|
|
->add('file2.eps', 6) |
410
|
|
|
|
|
|
|
->add('file3.eps', 4) |
411
|
|
|
|
|
|
|
; |
412
|
|
|
|
|
|
|
|
413
|
|
|
|
|
|
|
=item B |
414
|
|
|
|
|
|
|
|
415
|
|
|
|
|
|
|
Returns the number labels that would fit on a page. |
416
|
|
|
|
|
|
|
|
417
|
|
|
|
|
|
|
=item B |
418
|
|
|
|
|
|
|
|
419
|
|
|
|
|
|
|
Returns the number of labels printed on all the pages. If fill_last_page() is |
420
|
|
|
|
|
|
|
set to a true value, this might not reflect the number of labels actually |
421
|
|
|
|
|
|
|
printed, as the last one will be printed multiple times. The number will be |
422
|
|
|
|
|
|
|
accurate after the PostScript has been generated in a call to as_postscript(), |
423
|
|
|
|
|
|
|
as the count property of the last design will be adjusted at that moment. |
424
|
|
|
|
|
|
|
|
425
|
|
|
|
|
|
|
=item B I, I |
426
|
|
|
|
|
|
|
|
427
|
|
|
|
|
|
|
A rewrite of Class::Accessor's set() mutator, that returns the instance of the |
428
|
|
|
|
|
|
|
object, instead of the value. |
429
|
|
|
|
|
|
|
|
430
|
|
|
|
|
|
|
=item B I |
431
|
|
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|
|
|
|
|
432
|
|
|
|
|
|
|
=item B I |
433
|
|
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|
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|
434
|
|
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|
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|
|
=item B I |
435
|
|
|
|
|
|
|
|
436
|
|
|
|
|
|
|
Sets both h_margin() and v_margin() to I at the same time, and |
437
|
|
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respectively for h_padding() and v_padding(), and for h_spacing() and |
438
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v_spacing(). |
439
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440
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=item B |
441
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442
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Returns the PostScript code that prints the labels. It can be sent directly to |
443
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a printer spool, or converted to PDF, or whatever you can do with PostScript. |
444
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445
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=back |
446
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447
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=head1 AUTHOR |
448
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449
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Cédric Bouvier, C<< >> |
450
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451
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=head1 BUGS |
452
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453
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Please report any bugs or feature requests to C, or through |
454
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the web interface at L. I will be notified, and then you'll |
455
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automatically be notified of progress on your bug as I make changes. |
456
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457
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=head1 SUPPORT |
458
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459
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You can find documentation for this module with the perldoc command. |
460
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461
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perldoc PostScript::LabelSheet |
462
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463
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464
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You can also look for information at: |
465
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466
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=over 4 |
467
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468
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=item * RT: CPAN's request tracker |
469
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470
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L |
471
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472
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=item * AnnoCPAN: Annotated CPAN documentation |
473
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474
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L |
475
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476
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=item * CPAN Ratings |
477
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478
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L |
479
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480
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=item * Search CPAN |
481
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482
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L |
483
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484
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=back |
485
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486
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=head1 COPYRIGHT & LICENSE |
487
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488
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Copyright 2009 Cédric Bouvier. |
489
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490
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This program is free software; you can redistribute it and/or modify it |
491
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under the terms of either: the GNU General Public License as published |
492
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by the Free Software Foundation; or the Artistic License. |
493
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494
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See http://dev.perl.org/licenses/ for more information. |
495
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496
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497
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=cut |
498
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499
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1; # End of PostScript::LabelSheet |