package PDF::API2::Resource::ColorSpace::Separation;
use base 'PDF::API2::Resource::ColorSpace';
use strict;
no warnings qw[ deprecated recursion uninitialized ];
our $VERSION = '2.031'; # VERSION
use PDF::API2::Basic::PDF::Utils;
use PDF::API2::Util;
=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;
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;