/**
* saveThumbnail
* create thumbnail image from original
*
* @param Leimg_ImageObject $obj
*
* @return bool
**/
public function saveThumbnail($obj)
{
$ret = true;
$filePath = $obj->getFilePath($this->get('tsize'));
$orgFilePath = $obj->getFilePath();
//create resized image
$size = $this->_getResizedSize($obj->getImageInfo('width'), $obj->getImageInfo('height'));
$result = function_exists('imagecreatetruecolor') ? imagecreatetruecolor($size['width'], $size['height']) : imagecreate($size['width'], $size['height']);
//create image source
switch ($obj->getImageInfo('file_type')) {
case Lenum_ImageType::JPG:
//2
$source = imagecreatefromjpeg($orgFilePath);
break;
case Lenum_ImageType::GIF:
//1
$source = imagecreatefromgif($orgFilePath);
// set alpha channel
$alpha = imagecolortransparent($source);
imagefill($result, 0, 0, $alpha);
imagecolortransparent($result, $alpha);
break;
case Lenum_ImageType::PNG:
//3
$source = imagecreatefrompng($orgFilePath);
// set alpha channel
imagealphablending($result, false);
imagesavealpha($result, true);
break;
default:
$ret = false;
break;
}
if (!imagecopyresampled($result, $source, 0, 0, 0, 0, $size['width'], $size['height'], $obj->get('image_width'), $obj->get('image_height'))) {
die('failed to imagecopyresampled');
}
//delete old thumbnails
if (file_exists($filePath)) {
@unlink($filePath);
}
//create thumbnail image
switch ($obj->getImageInfo('file_type')) {
case Lenum_ImageType::JPG:
imagejpeg($result, $filePath, self::QUALITY);
break;
case Lenum_ImageType::GIF:
imagegif($result, $filePath);
break;
case Lenum_ImageType::PNG:
imagepng($result, $filePath);
break;
default:
$ret = false;
break;
}
return $ret;
}
