1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
package PDF::API2::Resource::ColorSpace::Separation;
use base 'PDF::API2::Resource::ColorSpace';
use strict;
no warnings qw[ deprecated recursion uninitialized ];
our $VERSION = '2.038'; # VERSION
use PDF::API2::Basic::PDF::Utils;
use PDF::API2::Util;
use Scalar::Util qw(weaken);
=head1 NAME
PDF::API2::Resource::ColorSpace::Separation - Support for color space separations
=head1 METHODS
=over
=item $cs = PDF::API2::Resource::ColorSpace::Separation->new $pdf, $key, %parameters
Returns a new colorspace object.
=cut
sub new {
my ($class,$pdf,$key,@opts)=@_;
my ($name,@clr)=@opts;
$class = ref $class if ref $class;
my $self=$class->SUPER::new($pdf,$key,@opts);
$pdf->new_obj($self) unless($self->is_obj($pdf));
$self->{' apipdf'}=$pdf;
weaken $self->{' apipdf'};
my $fct=PDFDict();
my $csname='DeviceRGB';
$clr[0]=lc($clr[0]);
$self->color(@clr);
if($clr[0]=~/^[a-z\#\!]+/) {
# colorname or #! specifier
# with rgb target colorspace
# namecolor returns always a RGB
my ($r,$g,$b)=namecolor($clr[0]);
$fct->{FunctionType}=PDFNum(0);
$fct->{Size}=PDFArray(PDFNum(2));
$fct->{Range}=PDFArray(map {PDFNum($_)} ($r,1,$g,1,$b,1));
$fct->{Domain}=PDFArray(PDFNum(0),PDFNum(1));
$fct->{BitsPerSample}=PDFNum(8);
$fct->{' stream'}="\xff\xff\xff\x00\x00\x00";
} elsif($clr[0]=~/^[\%]+/) {
# % specifier
# with cmyk target colorspace
my ($c,$m,$y,$k)=namecolor_cmyk($clr[0]);
$csname='DeviceCMYK';
$fct->{FunctionType}=PDFNum(0);
$fct->{Size}=PDFArray(PDFNum(2));
$fct->{Range}=PDFArray(map {PDFNum($_)} (0,$c,0,$m,0,$y,0,$k));
$fct->{Domain}=PDFArray(PDFNum(0),PDFNum(1));
$fct->{BitsPerSample}=PDFNum(8);
$fct->{' stream'}="\x00\x00\x00\x00\xff\xff\xff\xff";
} elsif(scalar @clr == 1) {
# grey color spec.
while($clr[0]>1) { $clr[0]/=255; }
# adjusted for 8/16/32bit spec.
my $g=$clr[0];
$csname='DeviceGray';
$fct->{FunctionType}=PDFNum(0);
$fct->{Size}=PDFArray(PDFNum(2));
$fct->{Range}=PDFArray(map {PDFNum($_)} (0,$g));
$fct->{Domain}=PDFArray(PDFNum(0),PDFNum(1));
$fct->{BitsPerSample}=PDFNum(8);
$fct->{' stream'}="\xff\x00";
} elsif(scalar @clr == 3) {
# legacy rgb color-spec (0 <= x <= 1)
my ($r,$g,$b)=@clr;
$fct->{FunctionType}=PDFNum(0);
$fct->{Size}=PDFArray(PDFNum(2));
$fct->{Range}=PDFArray(map {PDFNum($_)} ($r,1,$g,1,$b,1));
$fct->{Domain}=PDFArray(PDFNum(0),PDFNum(1));
$fct->{BitsPerSample}=PDFNum(8);
$fct->{' stream'}="\xff\xff\xff\x00\x00\x00";
} elsif(scalar @clr == 4) {
# legacy cmyk color-spec (0 <= x <= 1)
my ($c,$m,$y,$k)=@clr;
$csname='DeviceCMYK';
$fct->{FunctionType}=PDFNum(0);
$fct->{Size}=PDFArray(PDFNum(2));
$fct->{Range}=PDFArray(map {PDFNum($_)} (0,$c,0,$m,0,$y,0,$k));
$fct->{Domain}=PDFArray(PDFNum(0),PDFNum(1));
$fct->{BitsPerSample}=PDFNum(8);
$fct->{' stream'}="\x00\x00\x00\x00\xff\xff\xff\xff";
} else {
die 'invalid color specification.';
}
$self->type($csname);
$pdf->new_obj($fct);
$self->add_elements(PDFName('Separation'), PDFName($name), PDFName($csname), $fct);
$self->tintname($name);
return($self);
}
=item @color = $res->color
Returns the base-color of the Separation-Colorspace.
=cut
sub color {
my $self=shift @_;
if(scalar @_ >0 && defined($_[0])) {
$self->{' color'}=[@_];
}
return(@{$self->{' color'}});
}
=item $tintname = $res->tintname $tintname
Returns the tint-name of the Separation-Colorspace.
=cut
sub tintname {
my $self=shift @_;
if(scalar @_ >0 && defined($_[0])) {
$self->{' tintname'}=[@_];
}
return(@{$self->{' tintname'}});
}
sub param {
my $self=shift @_;
return($_[0]);
}
=back
=cut
1;
|
