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ReduceColorsModifier.php
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40 lines (35 loc) · 1.13 KB
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<?php
declare(strict_types=1);
namespace Intervention\Image\Modifiers;
use Intervention\Image\Drivers\SpecializableModifier;
use Intervention\Image\Exceptions\InvalidArgumentException;
use Intervention\Image\Exceptions\StateException;
use Intervention\Image\Interfaces\ColorInterface;
use Intervention\Image\Interfaces\ImageInterface;
class ReduceColorsModifier extends SpecializableModifier
{
/**
* Create new modifier object.
*
* @throws InvalidArgumentException
*/
public function __construct(
public int $limit,
public null|string|ColorInterface $background = null,
) {
if ($this->limit < 1) {
throw new InvalidArgumentException('Invalid color limit. Only use int<1, max>');
}
}
/**
* Return color in colorspace of image to fill transparent areas.
*
* @throws StateException
*/
protected function backgroundColor(ImageInterface $image): ColorInterface
{
return $this->driver()->decodeColor(
$this->background ?? $this->driver()->config()->backgroundColor,
)->toColorspace($image->colorspace());
}
}