build/testcases/NP_ImageLimitSize.php

   1 <?php
   2
   3 class NP_ImageLimitSize extends NucleusPlugin {
   4 /*
   5  Nucleus Plugin
   6
   7  History:
   8         v0.01 (2006-12-30):
   9                 - release for testing purposes (demonstrates the usage of the PreMediaUpload event)
  10 */
  11
  12         function getName()                { return 'NP_ImageLimitSize'; }
  13         function getAuthor()      { return 'Kai Greve'; }
  14         function getURL()                 { return 'http://www.nucleuscms.org/'; }
  15         function getVersion()     { return '0.01'; }
  16         function getDescription() { return 'Rescales an image (jpg/png) during the upload if it is bigger then a maximum with.'; }
  17
  18         function getMinNucleusVersion() { return 330; }
  19
  20         function supportsFeature($what) {
  21                 switch($what)
  22                 { case 'SqlTablePrefix':
  23                                 return 1;
  24                         default:
  25                                 return 0; }
  26         }
  27
  28         function install() {
  29                 $this->createOption('maxwidth', 'Maximal width for images', 'text', '450');
  30         }
  31
  32         function unInstall() {
  33         }
  34
  35         function getEventList() {
  36                 return array('PreMediaUpload');
  37         }
  38
  39         function event_PreMediaUpload(&$data) {
  40
  41                 $collection = $data['collection'];
  42                 $uploadfile = $data['uploadfile'];
  43                 $filename = $data['filename'];
  44
  45                 // evaluate the filetype from the filename
  46                 $filetype = strtolower(substr($filename, strpos($filename, ".")+1));
  47
  48                 // filetype is jpeg
  49                 if ($filetype=='jpg' || $filetype=='jpeg') {
  50
  51                         $size=getimagesize($data['uploadfile']);
  52
  53                         // size[0] is the image width
  54                         if ($size[0]>$this->getOption('maxwidth')) {
  55
  56                                 $newheight =  $this->getOption('maxwidth') * $size[1]/$size[0];
  57                         $image_orig = imagecreatefromjpeg($uploadfile);
  58                                 $image_new = imagecreatetruecolor($this->getOption('maxwidth'), $newheight);
  59
  60                                 imagecopyresampled($image_new, $image_orig, 0, 0, 0, 0, $this->getOption('maxwidth'), $newheight, $size[0], $size[1]);
  61
  62                                 imagejpeg ($image_new , $uploadfile);
  63
  64                                 // clear the memory
  65                                 imagedestroy($image_orig);
  66                                 imagedestroy($image_new);
  67
  68                         }
  69                 }
  70
  71                 // filetype is png
  72                 if ($filetype=='png') {
  73
  74                         $size=getimagesize($data['uploadfile']);
  75
  76                         // size[0] is the image width
  77                         if ($size[0]>$this->getOption('maxwidth')) {
  78
  79                                 $newheight =  $this->getOption('maxwidth') * $size[1]/$size[0];
  80                         $image_orig = imagecreatefrompng($uploadfile);
  81                                 $image_new = imagecreatetruecolor($this->getOption('maxwidth'), $newheight);
  82
  83                                 imagecopyresampled($image_new, $image_orig, 0, 0, 0, 0, $this->getOption('maxwidth'), $newheight, $size[0], $size[1]);
  84
  85                                 imagepng ( $image_new , $uploadfile);
  86
  87                                 // clear the memory
  88                                 imagedestroy($image_orig);
  89                                 imagedestroy($image_new);
  90
  91                         }
  92                 }
  93         }
  94 }
  95
  96 ?>