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#=======================================================================
# ____ ____ _____ _ ____ ___ ____
# | _ \| _ \| ___| _ _ / \ | _ \_ _| |___ \
# | |_) | | | | |_ (_) (_) / _ \ | |_) | | __) |
# | __/| |_| | _| _ _ / ___ \| __/| | / __/
# |_| |____/|_| (_) (_) /_/ \_\_| |___| |_____|
#
# A Perl Module Chain to faciliate the Creation and Modification
# of High-Quality "Portable Document Format (PDF)" Files.
#
# Copyright 1999-2005 Alfred Reibenschuh <areibens@cpan.org>.
#
#=======================================================================
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# $Id: DeviceN.pm,v 1.3 2005/03/14 22:01:27 fredo Exp $
#
#=======================================================================
package PDF::API2::Resource::ColorSpace::DeviceN;
BEGIN {
use strict;
use vars qw(@ISA $VERSION);
use PDF::API2::Resource::ColorSpace;
use PDF::API2::Basic::PDF::Utils;
use PDF::API2::Util;
use Math::Trig;
@ISA = qw( PDF::API2::Resource::ColorSpace );
( $VERSION ) = '$Revision: 1.3 $' =~ /Revision: (\S+)\s/; # $Date: 2005/03/14 22:01:27 $
}
no warnings qw[ deprecated recursion uninitialized ];
=item $cs = PDF::API2::Resource::ColorSpace::DeviceN->new $pdf, $key, %parameters
Returns a new colorspace object.
=cut
sub new {
my ($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);
}
=item $cs = PDF::API2::Resource::ColorSpace::DeviceN->new_api $api
Returns a DeviceN color-space object. This method is different from 'new' that
it needs an PDF::API2-object rather than a Text::PDF::File-object.
=cut
sub new_api {
my ($class,$api,@opts)=@_;
my $obj=$class->new($api->{pdf},pdfkey(),@opts);
$self->{' api'}=$api;
return($obj);
}
sub param {
my $self=shift @_;
return(@_);
}
1;
__END__
=head1 HISTORY
$Log: DeviceN.pm,v $
Revision 1.3 2005/03/14 22:01:27 fredo
upd 2005
Revision 1.2 2004/12/16 00:30:53 fredo
added no warn for recursion
Revision 1.1 2004/07/20 20:27:43 fredo
genesis
=cut
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