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<?php
/**
* Class QRFpdf
*
* @created 03.06.2020
* @author Maximilian Kresse
* @license MIT
*
* @see https://github.com/chillerlan/php-qrcode/pull/49
*/
namespace chillerlan\QRCode\Output;
use chillerlan\QRCode\Data\QRMatrix;
use chillerlan\Settings\SettingsContainerInterface;
use FPDF;
use function array_values, class_exists, count, intval, is_array, is_numeric, max, min;
/**
* QRFpdf output module (requires fpdf)
*
* @see https://github.com/Setasign/FPDF
* @see http://www.fpdf.org/
*/
class QRFpdf extends QROutputAbstract{
public const MIME_TYPE = 'application/pdf';
protected FPDF $fpdf;
protected ?array $prevColor = null;
/**
* QRFpdf constructor.
*
* @throws \chillerlan\QRCode\Output\QRCodeOutputException
*/
public function __construct(SettingsContainerInterface $options, QRMatrix $matrix){
if(!class_exists(FPDF::class)){
// @codeCoverageIgnoreStart
throw new QRCodeOutputException(
'The QRFpdf output requires FPDF (https://github.com/Setasign/FPDF)'.
' as dependency but the class "\\FPDF" couldn\'t be found.'
);
// @codeCoverageIgnoreEnd
}
parent::__construct($options, $matrix);
}
/**
* @inheritDoc
*/
public static function moduleValueIsValid($value):bool{
if(!is_array($value) || count($value) < 3){
return false;
}
// check the first 3 values of the array
foreach(array_values($value) as $i => $val){
if($i > 2){
break;
}
if(!is_numeric($val)){
return false;
}
}
return true;
}
/**
* @param array $value
*
* @inheritDoc
* @throws \chillerlan\QRCode\Output\QRCodeOutputException
*/
protected function prepareModuleValue($value):array{
$values = [];
foreach(array_values($value) as $i => $val){
if($i > 2){
break;
}
$values[] = max(0, min(255, intval($val)));
}
if(count($values) !== 3){
throw new QRCodeOutputException('invalid color value');
}
return $values;
}
/**
* @inheritDoc
*/
protected function getDefaultModuleValue(bool $isDark):array{
return ($isDark) ? [0, 0, 0] : [255, 255, 255];
}
/**
* Initializes an FPDF instance
*/
protected function initFPDF():FPDF{
$fpdf = new FPDF('P', $this->options->fpdfMeasureUnit, $this->getOutputDimensions());
$fpdf->AddPage();
return $fpdf;
}
/**
* @inheritDoc
*
* @return string|\FPDF
*/
public function dump(?string $file = null, ?FPDF $fpdf = null){
$this->fpdf = ($fpdf ?? $this->initFPDF());
if($this::moduleValueIsValid($this->options->bgColor)){
$bgColor = $this->prepareModuleValue($this->options->bgColor);
[$width, $height] = $this->getOutputDimensions();
/** @phan-suppress-next-line PhanParamTooFewUnpack */
$this->fpdf->SetFillColor(...$bgColor);
$this->fpdf->Rect(0, 0, $width, $height, 'F');
}
$this->prevColor = null;
foreach($this->matrix->getMatrix() as $y => $row){
foreach($row as $x => $M_TYPE){
$this->module($x, $y, $M_TYPE);
}
}
if($this->options->returnResource){
return $this->fpdf;
}
$pdfData = $this->fpdf->Output('S');
$this->saveToFile($pdfData, $file);
if($this->options->outputBase64){
$pdfData = $this->toBase64DataURI($pdfData);
}
return $pdfData;
}
/**
* Renders a single module
*/
protected function module(int $x, int $y, int $M_TYPE):void{
if(!$this->drawLightModules && !$this->matrix->isDark($M_TYPE)){
return;
}
$color = $this->getModuleValue($M_TYPE);
if($color !== null && $color !== $this->prevColor){
/** @phan-suppress-next-line PhanParamTooFewUnpack */
$this->fpdf->SetFillColor(...$color);
$this->prevColor = $color;
}
$this->fpdf->Rect(($x * $this->scale), ($y * $this->scale), $this->scale, $this->scale, 'F');
}
}
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