Replace itbz (deprecated) with setasign (#14)

Replaced itbz with setasign.
Also change the composer.json file

Author: laraben

src/PDFMerger/PDFMerger.php

@@ -12,7 +12,8 @@
 
 namespace Webklex\PDFMerger;
 
-use fpdi\FPDI;
+use setasign\Fpdi\Fpdi as FPDI;
+use setasign\Fpdi\PdfParser\StreamReader;
 use Illuminate\Filesystem\Filesystem;
 use Illuminate\Support\Collection;
 
@@ -213,15 +214,15 @@ protected function doMerge($orientation, $duplexSafe) {
 
         $this->aFiles->each(function($file) use($oFPDI, $orientation, $duplexSafe){
             $file['orientation'] = is_null($file['orientation'])?$orientation:$file['orientation'];
-            $count = $oFPDI->setSourceFile($file['name']);
+            $count = $oFPDI->setSourceFile(StreamReader::createByString(file_get_contents($file['name'])));
+
             if ($file['pages'] == 'all') {
 
                 for ($i = 1; $i <= $count; $i++) {
                     $template   = $oFPDI->importPage($i);
                     $size       = $oFPDI->getTemplateSize($template);
-                    $autoOrientation = ($size['h'] > $size['w']) ? 'P' : 'L';
 
-                    $oFPDI->AddPage($autoOrientation, [$size['w'], $size['h']]);
+                    $oFPDI->AddPage($file['orientation'], [$size['width'], $size['height']]);
                     $oFPDI->useTemplate($template);
                 }
             } else {
@@ -230,15 +231,14 @@ protected function doMerge($orientation, $duplexSafe) {
                         throw new \Exception("Could not load page '$page' in PDF '".$file['name']."'. Check that the page exists.");
                     }
                     $size = $oFPDI->getTemplateSize($template);
-                    $autoOrientation = ($size['h'] > $size['w']) ? 'P' : 'L';
 
-                    $oFPDI->AddPage($autoOrientation, [$size['w'], $size['h']]);
+                    $oFPDI->AddPage($file['orientation'], [$size['width'], $size['height']]);
                     $oFPDI->useTemplate($template);
                 }
             }
 
             if ($duplexSafe && $oFPDI->page % 2) {
-                $oFPDI->AddPage($file['orientation'], [$size['w'], $size['h']]);
+                $oFPDI->AddPage($file['orientation'], [$size['width'], $size['height']]);
             }
         });
     }