Viewing file:  ColorSpaceRestrictor.php (6.21 KB) -rw-rw-rw-
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
<?php
namespace Mpdf\Color;
use Mpdf\Mpdf;
class ColorSpaceRestrictor
{
const RESTRICT_TO_GRAYSCALE = 1;
const RESTRICT_TO_RGB_SPOT_GRAYSCALE = 2;
const RESTRICT_TO_CMYK_SPOT_GRAYSCALE = 3;
/**
* @var \Mpdf\Mpdf
*/
private $mpdf;
/**
* @var \Mpdf\Color\ColorModeConverter
*/
private $colorModeConverter;
/**
* @var int
*/
private $mode;
/**
* Process $mode settings
* 1 - allow GRAYSCALE only [convert CMYK/RGB->gray]
* 2 - allow RGB / SPOT COLOR / Grayscale [convert CMYK->RGB]
* 3 - allow CMYK / SPOT COLOR / Grayscale [convert RGB->CMYK]
*
* @param \Mpdf\Mpdf $mpdf
* @param \Mpdf\Color\ColorModeConverter $colorModeConverter
* @param int $mode
*/
public function __construct(Mpdf $mpdf, ColorModeConverter $colorModeConverter)
{
$this->mpdf = $mpdf;
$this->colorModeConverter = $colorModeConverter;
}
/**
* @param mixed $c
* @param string $color
* @param string[] $PDFAXwarnings
*
* @return float[]|mixed
*/
public function restrictColorSpace($c, $color, &$PDFAXwarnings = [])
{
if (!is_array($c)) {
return $c;
}
$mode = (int) $c[0];
switch ($mode) {
case 1:
return $c;
case 2:
return $this->restrictSpotColorSpace($c, $PDFAXwarnings);
case 3:
return $this->restrictRgbColorSpace($c, $color, $PDFAXwarnings);
case 4:
return $this->restrictCmykColorSpace($c, $color, $PDFAXwarnings);
case 5:
return $this->restrictRgbaColorSpace($c, $color, $PDFAXwarnings);
case 6:
return $this->restrictCmykaColorSpace($c, $color, $PDFAXwarnings);
}
return $c;
}
/**
* @param string $c
* @param string[] $PDFAXwarnings
*
* @return float[]
*/
private function restrictSpotColorSpace($c, &$PDFAXwarnings = [])
{
if (!isset($this->mpdf->spotColorIDs[$c[1]])) {
throw new \Mpdf\MpdfException('Error: Spot colour has not been defined - ' . $this->mpdf->spotColorIDs[$c[1]]);
}
if ($this->mpdf->PDFA) {
if ($this->mpdf->PDFA && !$this->mpdf->PDFAauto) {
$PDFAXwarnings[] = "Spot color specified '" . $this->mpdf->spotColorIDs[$c[1]] . "' (converted to process color)";
}
if ($this->mpdf->restrictColorSpace != 3) {
$sp = $this->mpdf->spotColors[$this->mpdf->spotColorIDs[$c[1]]];
$c = $this->colorModeConverter->cmyk2rgb([4, $sp['c'], $sp['m'], $sp['y'], $sp['k']]);
}
} elseif ($this->mpdf->restrictColorSpace == 1) {
$sp = $this->mpdf->spotColors[$this->mpdf->spotColorIDs[$c[1]]];
$c = $this->colorModeConverter->cmyk2gray([4, $sp['c'], $sp['m'], $sp['y'], $sp['k']]);
}
return $c;
}
/**
* @param mixed $c
* @param string $color
* @param string[] $PDFAXwarnings
*
* @return float[]
*/
private function restrictRgbColorSpace($c, $color, &$PDFAXwarnings = [])
{
if ($this->mpdf->PDFX || ($this->mpdf->PDFA && $this->mpdf->restrictColorSpace == 3)) {
if (($this->mpdf->PDFA && !$this->mpdf->PDFAauto) || ($this->mpdf->PDFX && !$this->mpdf->PDFXauto)) {
$PDFAXwarnings[] = "RGB color specified '" . $color . "' (converted to CMYK)";
}
$c = $this->colorModeConverter->rgb2cmyk($c);
} elseif ($this->mpdf->restrictColorSpace == 1) {
$c = $this->colorModeConverter->rgb2gray($c);
} elseif ($this->mpdf->restrictColorSpace == 3) {
$c = $this->colorModeConverter->rgb2cmyk($c);
}
return $c;
}
/**
* @param mixed $c
* @param string $color
* @param string[] $PDFAXwarnings
*
* @return float[]
*/
private function restrictCmykColorSpace($c, $color, &$PDFAXwarnings = [])
{
if ($this->mpdf->PDFA && $this->mpdf->restrictColorSpace != 3) {
if ($this->mpdf->PDFA && !$this->mpdf->PDFAauto) {
$PDFAXwarnings[] = "CMYK color specified '" . $color . "' (converted to RGB)";
}
$c = $this->colorModeConverter->cmyk2rgb($c);
} elseif ($this->mpdf->restrictColorSpace == 1) {
$c = $this->colorModeConverter->cmyk2gray($c);
} elseif ($this->mpdf->restrictColorSpace == 2) {
$c = $this->colorModeConverter->cmyk2rgb($c);
}
return $c;
}
/**
* @param mixed $c
* @param string $color
* @param string[] $PDFAXwarnings
*
* @return float[]
*/
private function restrictRgbaColorSpace($c, $color, &$PDFAXwarnings = [])
{
if ($this->mpdf->PDFX || ($this->mpdf->PDFA && $this->mpdf->restrictColorSpace == 3)) {
if (($this->mpdf->PDFA && !$this->mpdf->PDFAauto) || ($this->mpdf->PDFX && !$this->mpdf->PDFXauto)) {
$PDFAXwarnings[] = "RGB color with transparency specified '" . $color . "' (converted to CMYK without transparency)";
}
$c = $this->colorModeConverter->rgb2cmyk($c);
$c = [4, $c[1], $c[2], $c[3], $c[4]];
} elseif ($this->mpdf->PDFA && $this->mpdf->restrictColorSpace != 3) {
if (!$this->mpdf->PDFAauto) {
$PDFAXwarnings[] = "RGB color with transparency specified '" . $color . "' (converted to RGB without transparency)";
}
$c = $this->colorModeConverter->rgb2cmyk($c);
$c = [4, $c[1], $c[2], $c[3], $c[4]];
} elseif ($this->mpdf->restrictColorSpace == 1) {
$c = $this->colorModeConverter->rgb2gray($c);
} elseif ($this->mpdf->restrictColorSpace == 3) {
$c = $this->colorModeConverter->rgb2cmyk($c);
}
return $c;
}
/**
* @param mixed $c
* @param string $color
* @param string[] $PDFAXwarnings
*
* @return float[]
*/
private function restrictCmykaColorSpace($c, $color, &$PDFAXwarnings = [])
{
if ($this->mpdf->PDFA && $this->mpdf->restrictColorSpace != 3) {
if (($this->mpdf->PDFA && !$this->mpdf->PDFAauto) || ($this->mpdf->PDFX && !$this->mpdf->PDFXauto)) {
$PDFAXwarnings[] = "CMYK color with transparency specified '" . $color . "' (converted to RGB without transparency)";
}
$c = $this->colorModeConverter->cmyk2rgb($c);
$c = [3, $c[1], $c[2], $c[3]];
} elseif ($this->mpdf->PDFX || ($this->mpdf->PDFA && $this->mpdf->restrictColorSpace == 3)) {
if (($this->mpdf->PDFA && !$this->mpdf->PDFAauto) || ($this->mpdf->PDFX && !$this->mpdf->PDFXauto)) {
$PDFAXwarnings[] = "CMYK color with transparency specified '" . $color . "' (converted to CMYK without transparency)";
}
$c = $this->colorModeConverter->cmyk2rgb($c);
$c = [3, $c[1], $c[2], $c[3]];
} elseif ($this->mpdf->restrictColorSpace == 1) {
$c = $this->colorModeConverter->cmyk2gray($c);
} elseif ($this->mpdf->restrictColorSpace == 2) {
$c = $this->colorModeConverter->cmyk2rgb($c);
}
return $c;
}
}
|