<?php
/*
  +----------------------------------------------------------------------+
  | ThumbnaiI Image v.: 0.1 (05.12.2006)                                 |
  +----------------------------------------------------------------------+
  | Generate thumbnail images                                            |
  +----------------------------------------------------------------------+  
  | Author: Stigmat <multzone@inbox.ru>                                  |
  +----------------------------------------------------------------------+
*/

class thumbnail_images {

// get
var $PathImgOld;
var $PathImgNew;
var $NewWidth;
var $NewHeight;

// tmp
var $mime;

function imagejpeg_new ($NewImg,$path_img) {
if ($this->mime == 'image/jpeg' or $this->mime == 'image/pjpeg') imagejpeg($NewImg,$path_img);
elseif ($this->mime == 'image/gif') imagegif($NewImg,$path_img);
elseif ($this->mime == 'image/png') imagepng($NewImg,$path_img);
else return(false);
return(true);
}

function imagecreatefromjpeg_new($path_img) {
if ($this->mime == 'image/jpeg' or $this->mime == 'image/pjpeg') $OldImg=imagecreatefromjpeg($path_img);
elseif ($this->mime == 'image/gif') $OldImg=imagecreatefromgif($path_img);
elseif ($this->mime == 'image/png') $OldImg=imagecreatefrompng($path_img);
else return(false);
return($OldImg);
}

function create_thumbnail_images() {
$PathImgOld = $this->PathImgOld;
$PathImgNew = $this->PathImgNew;
$NewWidth = $this->NewWidth;
$NewHeight = $this->NewHeight;

$Oldsize = @getimagesize($PathImgOld);
$this->mime = $Oldsize['mime'];
$OldWidth = $Oldsize[0];
$OldHeight = $Oldsize[1];

if ($NewHeight=='' and $NewWidth!='') {
$NewHeight = ceil(($OldHeight*$NewWidth)/$OldWidth);
}
elseif ($NewWidth=='' and $NewHeight!='') {
$NewWidth = ceil(($OldWidth*$NewHeight)/$OldHeight);
}
elseif ($NewHeight=='' and $NewWidth=='') {
return(false);
}

$OldHeight_castr = ceil(($OldWidth*$NewHeight)/$NewWidth);
$castr_bottom = ($OldHeight-$OldHeight_castr)/2;

$OldWidth_castr = ceil(($OldHeight*$NewWidth)/$NewHeight);
$castr_right = ($OldWidth-$OldWidth_castr)/2;

if ($castr_bottom>0) {
$OldWidth_castr = $OldWidth;
$castr_right = 0;
}
elseif ($castr_right>0) {
$OldHeight_castr = $OldHeight;
$castr_bottom = 0;
}
else {
$OldWidth_castr = $OldWidth;
$OldHeight_castr = $OldHeight;
$castr_right = 0;
$castr_bottom = 0;
}

$OldImg=$this->imagecreatefromjpeg_new($PathImgOld);
if ($OldImg) {
$NewImg_castr=imagecreatetruecolor($OldWidth_castr,$OldHeight_castr);
if ($NewImg_castr) {
$negro = imagecolorallocate($NewImg_castr, 0, 0, 0);
imagecolortransparent($NewImg_castr, $negro);
imagecopyresampled($NewImg_castr,$OldImg,0,0,$castr_right,$castr_bottom,$OldWidth_castr,$OldHeight_castr,$OldWidth_castr,$OldHeight_castr);
$NewImg=imagecreatetruecolor($NewWidth,$NewHeight);
if ($NewImg) {
$negro = imagecolorallocate($NewImg_castr, 0, 0, 0);
imagecolortransparent($NewImg_castr, $negro);
imagecopyresampled($NewImg,$NewImg_castr,0,0,0,0,$NewWidth,$NewHeight,$OldWidth_castr,$OldHeight_castr);

imagedestroy($NewImg_castr);
imagedestroy($OldImg);
if (!$this->imagejpeg_new($NewImg,$PathImgNew)) return (false);
imagedestroy($NewImg);
}

}
}
else {
return(false);
}

return(true);
}

}
?>