php - Concrete5: set File thumbnail to generated image (e.g. for PDFs) -


i'm using concrete5, , i'm trying display thumbnails various uploaded files. while of these might images, majority pdfs.

i'm using:

<?php $file = file::getbyid($fid); $imagehelper = core::make('helper/image'); try {     $imagehelper->outputthumbnail($file, 200, 200); } catch(invalidargumentexception $e) { ?>     <img src='https://placehold.it/200x200'> <?php } ?>

i'd prefer somehow create smaller thumbnail of pdf files, example using ghostscript in background. in built-in file manager, @ least pdf icon displayed. non-optimal option, still better not displaying signify we're dealing pdf..

how can access built-in thumbnails? and, more importantly, how can overwrite them file-types when uploaded?

edit:

i came across $file->getthumbnailurl('type'); , created type own purposes. how automatically generate such thumbnail when file uploaded? can figure out how generate file plain php, storing in concrete5 i'm unsure about.

in end, here's how did it.

i started off creating new thumbnail type in configure method of package's controller, follows:

use concrete\core\file\image\thumbnail\type\type;  ...  public function configure($pkg) {     ...      $thumbnailtype = new type();     $thumbnailtype->setname(tc('thumbnailtypename', 'pdf thumbnails'));     $thumbnailtype->sethandle('pdfthumbnails');     $thumbnailtype->setwidth(200);     $thumbnailtype->setheight(200);     $thumbnailtype->save(); }

then created class mypackage/src/document_processing/pdfthumbnails.php following contents:

namespace concrete\package\mypackage\src\documentprocessing;  use core; use file; use concrete\core\file\image\thumbnail\type\type;  class pdfthumbnails {      public function processpdfthumbnails($fv) {         $fi = core::make('helper/file');         $fvobj = $fv->getfileversionobject();         $ext = $fi->getextension($fvobj->getfilename());         $file = $fvobj->getfile();         if ($ext == 'pdf') {             $type = type::getbyhandle('pdfthumbnails');             $basetype = $type->getbaseversion();             $thumbpath = $basetype->getfilepath($fvobj);              $fsl = $file->getfilestoragelocationobject()->getfilesystemobject();             $fre = $fvobj->getfileresource();             // requires sufficient permissions..             // depending on setup, reconsider 0777             mkdir('application/files'.dirname($thumbpath), 0777, true);             exec('gs -o application/files'.escapeshellarg($thumbpath).' -dpdffitpage -sdevice=png16m -g200x200 -dlastpage=1 -f application/files/'.escapeshellarg($fre->getpath()));         }     } }

and hooked on_file_version_add event in package's controller:

use concrete\package\mypackage\src\documentprocessing\pdfthumbnails;  ...      public function on_start() {         events::addlistener('on_file_version_add', array(new pdfthumbnails(), 'processpdfthumbnails'));     }

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