I believe the code is somewhere in the Uploads.module.php file. And I found out some webpage which got the script to auto generate thumbnail at the same time user upload the images. Here is the link:
http://www.reconn.us/image_thumbnail.html
I try to embed the script above into the _handleUpload function in uploads.module.php & the coding as below:
Code: Select all
function _handleUpload ($destDir, $realAuthor, $maxFileSize = false, $fieldName = '_upload', $nameCallback = false,
$destname = '',$enforceextension = true,
$replace_existing = false)
{
//make sure something is there
if (!isset ($_FILES[$fieldName]) || !isset ($_FILES)
|| !is_array ($_FILES[$fieldName]) || !$_FILES[$fieldName]['name'])
{
return array (false, $this->Lang('error_nofilesuploaded'));
}
//normalize the file variable
$theAuthor = $realAuthor;
$file = $_FILES[$fieldName];
if (!isset ($file['type']))
$file['type'] = '';
if (!isset ($file['size']))
$file['size'] = '';
if (!isset ($file['tmp_name']))
$file['tmp_name'] = '';
$file['name'] =
preg_replace('/[^a-zA-Z0-9\.\$\%\'\`\-\@\{\}\~\!\#\(\)\&\_\^]/', '',
str_replace (array (' ', '%20'), array ('_', '_'), $file['name']));
// validate the filename
if (!$this->_isValidFilename ($file['name']))
{
return array (false, $this->Lang ('error_invaliduploadfilename',$file['name']));
}
//was it to big?
if ($maxFileSize && ($file['size'] > ($maxFileSize * 1024)))
return array (false, $this->Lang ('error_filetoolarge'));
//normalize destDir
if (strlen ($destDir) > 0 && $destDir[strlen ($destDir) - 1] != "/")
$destDir = $destDir.'/';
// get the destination name
if( $destname == '' ) {
$destname = $file['name'];
}
//should we change the filename via a callback?
if ($nameCallback)
{
$destname =
call_user_func_array ($nameCallback, array ($file, $destDir));
}
if( $enforceextension == true && $this->GetPreference('requirefilename_extensions',1))
{
// make sure it has an extension
// if it doesn't have one, we give it one (the one off the input file)
if( strpos($destname,'.') == false )
{
if( ($p = strpos( $file['name'], '.' ) ) != false )
{
$destname = $destname . substr( $file['name'], $p );
}
}
}
// and clean it up
$destname =
preg_replace('/[^a-zA-Z0-9\.\$\%\'\`\-\@\{\}\~\!\#\(\)\&\_\^]/', '',
str_replace (array (' ', '%20'), array ('_', '_'), $destname));
if( $replace_existing == false )
{
if( file_exists( $destDir.$destname ) && $replace_existing == false ) {
return array( false, $this->Lang( 'error_fileexists', $destDir.$destname ));
}
}
//and now the big moment
//HERE ARE THE THUMBNAIL CODES FROM THE LINK I PROVIDED ABOVE
$newName2 = $file['name'];
if (!@copy ($file['tmp_name'], $destDir.$destname))
{
return array (false,
$this->Lang ('error_couldnotwrite').
': '.$file['name']." -> ".$destDir." ".
$this->Lang ('error_permissiondenied'));
}
else
{
// define the width and height for the thumbnail
define ("WIDTH","150");
define ("HEIGHT","100");
// the new thumbnail image will be placed in same image folder
$thumb_name= $destDir.'thumb_'.$file['name'];
$thumb = $this->make_thumb($newName2,$thumb_name,WIDTH,HEIGHT);
if(!$thumb)
{
return array (false, "Failed to generate thumbnail for the image ". $newName2);
}
else
{
return array (true, array('name' => $destname, 'size' => $file['size'], 'dir' => $destDir ));
}
}
}Code: Select all
function make_thumb($img_name,$filename,$new_w,$new_h)
{
//get image extension.
$ext=getExtension($img_name);
//creates the new image using the appropriate function from gd library
if(!strcmp("jpg",$ext) || !strcmp("jpeg",$ext))
$src_img=imagecreatefromjpeg($img_name);
if(!strcmp("png",$ext))
$src_img=imagecreatefrompng($img_name);
//gets the dimmensions of the image
$old_x=imageSX($src_img);
$old_y=imageSY($src_img);
// next we will calculate the new dimmensions for the thumbnail image
// the next steps will be taken:
// 1. calculate the ratio by dividing the old dimmensions with the new ones
// 2. if the ratio for the width is higher, the width will remain the one define in WIDTH variable
// and the height will be calculated so the image ratio will not change
// 3. otherwise we will use the height ratio for the image
// as a result, only one of the dimmensions will be from the fixed ones
$ratio1=$old_x/$new_w;
$ratio2=$old_y/$new_h;
if($ratio1>$ratio2) {
$thumb_w=$new_w;
$thumb_h=$old_y/$ratio1;
}
else {
$thumb_h=$new_h;
$thumb_w=$old_x/$ratio2;
}
// we create a new image with the new dimmensions
$dst_img=ImageCreateTrueColor($thumb_w,$thumb_h);
// resize the big image to the new created one
imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y);
// output the created image to the file. Now we will have the thumbnail into the file named by $filename
if(!strcmp("png",$ext))
imagepng($dst_img,$filename);
else
imagejpeg($dst_img,$filename);
//destroys source and destination images.
imagedestroy($dst_img);
imagedestroy($src_img);
}Code: Select all
// This function reads the extension of the file.
// It is used to determine if the file is an image by checking the extension.
function getExtension($str) {
$i = strrpos($str,".");
if (!$i) { return ""; }
$l = strlen($str) - $i;
$ext = substr($str,$i+1,$l);
return $ext;
}
I not a good coder & I hope anyone of you can guide me through this. Your help is greatly appreciated.Eric
