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<?php
/*
* (c) Jeroen van den Enden <info@endroid.nl>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace Endroid\QrCode\Writer;
use BaconQrCode\Renderer\Image\Eps;
use BaconQrCode\Writer;
use Endroid\QrCode\QrCodeInterface;
class EpsWriter extends AbstractBaconWriter
{
/**
* {@inheritdoc}
*/
public function writeString(QrCodeInterface $qrCode)
{
$renderer = new Eps();
$renderer->setWidth($qrCode->getSize());
$renderer->setHeight($qrCode->getSize());
$renderer->setMargin(0);
$renderer->setForegroundColor($this->convertColor($qrCode->getForegroundColor()));
$renderer->setBackgroundColor($this->convertColor($qrCode->getBackgroundColor()));
$writer = new Writer($renderer);
$string = $writer->writeString($qrCode->getText(), $qrCode->getEncoding(), $this->convertErrorCorrectionLevel($qrCode->getErrorCorrectionLevel()));
$string = $this->addMargin($string, $qrCode);
return $string;
}
/**
* @param string $string
* @param QrCodeInterface $qrCode
*
* @return string
*/
protected function addMargin($string, QrCodeInterface $qrCode)
{
$targetSize = $qrCode->getSize() + $qrCode->getMargin() * 2;
$lines = explode("\n", $string);
$sourceBlockSize = 0;
$additionalWhitespace = $qrCode->getSize();
foreach ($lines as $line) {
if (preg_match('#[0-9]+ [0-9]+ [0-9]+ [0-9]+ F#i', $line) && false === strpos($line, $qrCode->getSize().' '.$qrCode->getSize().' F')) {
$parts = explode(' ', $line);
$sourceBlockSize = $parts[2];
$additionalWhitespace = min($additionalWhitespace, $parts[0]);
}
}
$blockCount = ($qrCode->getSize() - 2 * $additionalWhitespace) / $sourceBlockSize;
$targetBlockSize = $qrCode->getSize() / $blockCount;
foreach ($lines as &$line) {
if (false !== strpos($line, 'BoundingBox')) {
$line = '%%BoundingBox: 0 0 '.$targetSize.' '.$targetSize;
} elseif (false !== strpos($line, $qrCode->getSize().' '.$qrCode->getSize().' F')) {
$line = '0 0 '.$targetSize.' '.$targetSize.' F';
} elseif (preg_match('#[0-9]+ [0-9]+ [0-9]+ [0-9]+ F#i', $line)) {
$parts = explode(' ', $line);
$parts[0] = $qrCode->getMargin() + $targetBlockSize * ($parts[0] - $additionalWhitespace) / $sourceBlockSize;
$parts[1] = $qrCode->getMargin() + $targetBlockSize * ($parts[1] - $sourceBlockSize - $additionalWhitespace) / $sourceBlockSize;
$parts[2] = $targetBlockSize;
$parts[3] = $targetBlockSize;
$line = implode(' ', $parts);
}
}
$string = implode("\n", $lines);
return $string;
}
/**
* {@inheritdoc}
*/
public static function getContentType()
{
return 'image/eps';
}
/**
* {@inheritdoc}
*/
public static function getSupportedExtensions()
{
return ['eps'];
}
}