Add-On Spot colors
Informations
Author:OlivierLicense: FPDF
Description
This script allows to use spot colors (used in professional printing). You define a spot color with:AddSpotColor(string name, int c, int m, int y, int k)where
c, m, y and k are the
equivalent CMYK components. Then you select it with:SetDrawSpotColor(string name [, int tint])SetFillSpotColor(string name [, int tint])SetTextSpotColor(string name [, int tint])where
tint is the intensity of the color (100 by default, i.e. full intensity).
Source
<?php
require('fpdf.php');
class PDF_SpotColor extends FPDF
{
protected $SpotColors = array();
function AddSpotColor($name, $c, $m, $y, $k)
{
if(!isset($this->SpotColors[$name]))
{
$i = count($this->SpotColors)+1;
$this->SpotColors[$name] = array('i'=>$i, 'c'=>$c, 'm'=>$m, 'y'=>$y, 'k'=>$k);
}
}
function SetDrawSpotColor($name, $tint=100)
{
if(!isset($this->SpotColors[$name]))
$this->Error('Undefined spot color: '.$name);
$this->DrawColor = sprintf('/CS%d CS %.3F SCN', $this->SpotColors[$name]['i'], $tint/100);
if($this->page>0)
$this->_out($this->DrawColor);
}
function SetFillSpotColor($name, $tint=100)
{
if(!isset($this->SpotColors[$name]))
$this->Error('Undefined spot color: '.$name);
$this->FillColor = sprintf('/CS%d cs %.3F scn', $this->SpotColors[$name]['i'], $tint/100);
$this->ColorFlag = ($this->FillColor!=$this->TextColor);
if($this->page>0)
$this->_out($this->FillColor);
}
function SetTextSpotColor($name, $tint=100)
{
if(!isset($this->SpotColors[$name]))
$this->Error('Undefined spot color: '.$name);
$this->TextColor = sprintf('/CS%d cs %.3F scn', $this->SpotColors[$name]['i'], $tint/100);
$this->ColorFlag = ($this->FillColor!=$this->TextColor);
}
function _putspotcolors()
{
foreach($this->SpotColors as $name=>$color)
{
$this->_newobj();
$this->_put('[/Separation /'.str_replace(' ', '#20', $name));
$this->_put('/DeviceCMYK <<');
$this->_put('/Range [0 1 0 1 0 1 0 1] /C0 [0 0 0 0] ');
$this->_put(sprintf('/C1 [%.3F %.3F %.3F %.3F] ', $color['c']/100, $color['m']/100, $color['y']/100, $color['k']/100));
$this->_put('/FunctionType 2 /Domain [0 1] /N 1>>]');
$this->_put('endobj');
$this->SpotColors[$name]['n'] = $this->n;
}
}
function _putresourcedict()
{
parent::_putresourcedict();
$this->_put('/ColorSpace <<');
foreach($this->SpotColors as $color)
$this->_put('/CS'.$color['i'].' '.$color['n'].' 0 R');
$this->_put('>>');
}
function _putresources()
{
$this->_putspotcolors();
parent::_putresources();
}
}
?>Example
<?php
require('spotcolor.php');
$pdf = new PDF_SpotColor();
$pdf->AddSpotColor('PANTONE 145 CVC', 0, 42, 100, 25);
$pdf->AddPage();
$pdf->SetFillSpotColor('PANTONE 145 CVC');
$pdf->Rect(80, 40, 50, 50, 'F');
$pdf->Output();
?>