Current File : /var/www/html/o91-api/vendor/spatie/pdf-to-image/src/Pdf.php
<?php
namespace Spatie\PdfToImage;
use Spatie\PdfToImage\Exceptions\InvalidFormat;
use Spatie\PdfToImage\Exceptions\PdfDoesNotExist;
use Spatie\PdfToImage\Exceptions\PageDoesNotExist;
class Pdf
{
protected $pdfFile;
protected $resolution = 144;
protected $outputFormat = '';
protected $page = 1;
protected $validOutputFormats = ['jpg', 'jpeg', 'png'];
/**
* @param string $pdfFile The path to the pdffile.
*
* @throws \Spatie\PdfToImage\Exceptions\PdfDoesNotExist
*/
public function __construct($pdfFile)
{
if (! file_exists($pdfFile)) {
throw new PdfDoesNotExist();
}
$this->pdfFile = $pdfFile;
}
/**
* Set the raster resolution.
*
* @param int $resolution
*
* @return $this
*/
public function setResolution($resolution)
{
$this->resolution = $resolution;
return $this;
}
/**
* Set the output format.
*
* @param string $outputFormat
*
* @return $this
*
* @throws \Spatie\PdfToImage\Exceptions\InvalidFormat
*/
public function setOutputFormat($outputFormat)
{
if (! $this->isValidOutputFormat($outputFormat)) {
throw new InvalidFormat('Format '.$outputFormat.' is not supported');
}
$this->outputFormat = $outputFormat;
return $this;
}
/**
* Determine if the given format is a valid output format.
*
* @param $outputFormat
*
* @return bool
*/
public function isValidOutputFormat($outputFormat)
{
return in_array($outputFormat, $this->validOutputFormats);
}
/**
* Set the page number that should be rendered.
*
* @param int $page
*
* @return $this
*
* @throws \Spatie\PdfToImage\Exceptions\PageDoesNotExist
*/
public function setPage($page)
{
if ($page > $this->getNumberOfPages()) {
throw new PageDoesNotExist('Page '.$page.' does not exist');
}
$this->page = $page;
return $this;
}
/**
* Get the number of pages in the pdf file.
*
* @return int
*/
public function getNumberOfPages()
{
return (new \Imagick($this->pdfFile))->getNumberImages();
}
/**
* Save the image to the given path.
*
* @param string $pathToImage
*
* @return bool
*/
public function saveImage($pathToImage)
{
$imageData = $this->getImageData($pathToImage);
return file_put_contents($pathToImage, $imageData) === false ? false : true;
}
/**
* Save the file as images to the given directory.
*
* @param string $directory
* @param string $prefix
*
* @return array $files the paths to the created images
*/
public function saveAllPagesAsImages($directory, $prefix = '')
{
$numberOfPages = $this->getNumberOfPages();
if ($numberOfPages === 0) {
return [];
}
return array_map(function ($pageNumber) use ($directory, $prefix) {
$this->setPage($pageNumber);
$destination = "{$directory}/{$prefix}{$pageNumber}.{$this->outputFormat}";
$this->saveImage($destination);
return $destination;
}, range(1, $numberOfPages));
}
/**
* Return raw image data.
*
* @param string $pathToImage
*
* @return \Imagick
*/
public function getImageData($pathToImage)
{
$imagick = new \Imagick();
$imagick->setResolution($this->resolution, $this->resolution);
$imagick->readImage(sprintf('%s[%s]', $this->pdfFile, $this->page - 1));
$imagick->mergeImageLayers(\Imagick::LAYERMETHOD_FLATTEN);
$imagick->setFormat($this->determineOutputFormat($pathToImage));
return $imagick;
}
/**
* Determine in which format the image must be rendered.
*
* @param $pathToImage
*
* @return string
*/
protected function determineOutputFormat($pathToImage)
{
$outputFormat = pathinfo($pathToImage, PATHINFO_EXTENSION);
if ($this->outputFormat != '') {
$outputFormat = $this->outputFormat;
}
$outputFormat = strtolower($outputFormat);
if (! $this->isValidOutputFormat($outputFormat)) {
$outputFormat = 'jpg';
}
return $outputFormat;
}
}
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