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package PDF::API2::Resource::ColorSpace::DeviceN;
our $VERSION = '2.019';
use base 'PDF::API2::Resource::ColorSpace';
use PDF::API2::Basic::PDF::Utils;
use PDF::API2::Util;
no warnings qw[ deprecated recursion uninitialized ];
sub new {
my ($class,$pdf,$key,@opts)=@_;
my ($clrs,$sampled)=@opts;
$sampled=2;
$class = ref $class if ref $class;
$self=$class->SUPER::new($pdf,$key);
$pdf->new_obj($self) unless($self->is_obj($pdf));
$self->{' apipdf'}=$pdf;
my $fct=PDFDict();
my $csname=$clrs->[0]->type;
my @xclr=map { $_->color } @{$clrs};
my @xnam=map { $_->tintname } @{$clrs};
# $self->{' comments'}="DeviceN ColorSpace\n";
if($csname eq 'DeviceCMYK') {
@xclr=map { [ namecolor_cmyk($_) ] } @xclr;
$fct->{FunctionType}=PDFNum(0);
$fct->{Order}=PDFNum(3);
$fct->{Range}=PDFArray(map {PDFNum($_)} (0,1,0,1,0,1,0,1));
$fct->{BitsPerSample}=PDFNum(8);
$fct->{Domain}=PDFArray();
$fct->{Size}=PDFArray();
foreach (@xclr) {
$fct->{Size}->add_elements(PDFNum($sampled));
$fct->{Domain}->add_elements(PDFNum(0),PDFNum(1));
}
my @spec=();
foreach my $xc (0..(scalar @xclr)-1) {
foreach my $n (0..($sampled**(scalar @xclr))-1) {
$spec[$n]||=[0,0,0,0];
my $factor=($n/($sampled**$xc)) % $sampled;
# $self->{' comments'}.="C($n): xc=$xc i=$factor ";
my @thiscolor=map { ($_*$factor)/($sampled-1) } @{$xclr[$xc]};
# $self->{' comments'}.="(@{$xclr[$xc]}) --> (@thiscolor) ";
foreach my $s (0..3) {
$spec[$n]->[$s]+=$thiscolor[$s];
}
@{$spec[$n]}=map { $_>1?1:$_ } @{$spec[$n]};
# $self->{' comments'}.="--> (@{$spec[$n]})\n";
# $self->{' comments'}.="\n";
}
}
my @b=();
foreach my $s (@spec) {
push @b,(map { pack('C',($_*255)) } @{$s});
}
$fct->{' stream'}=join('',@b);
} else {
die "unsupported colorspace specification (=$csname).";
}
$fct->{Filter}=PDFArray(PDFName('ASCIIHexDecode'));
$self->type($csname);
$pdf->new_obj($fct);
my $attr=PDFDict();
foreach my $cs (@{$clrs}) {
$attr->{$cs->tintname}=$cs;
}
$self->add_elements(PDFName('DeviceN'), PDFArray(map { PDFName($_) } @xnam), PDFName($csname), $fct);
return($self);
}
sub new_api {
my ($class,$api,@opts)=@_;
my $obj=$class->new($api->{pdf},pdfkey(),@opts);
$self->{' api'}=$api;
return($obj);
}
sub param {
my $self=shift @_;
return(@_);
}
1;
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