/**
* Load an image
*
* @param $filename
* @return Image
* @throws Exception
*/
public static function load($filename)
{
$instance = new self();
// Require GD library
if (!extension_loaded('gd')) {
throw new Exception('Required extension GD is not loaded.');
}
$instance->filename = $filename;
$info = getimagesize($instance->filename);
switch ($info['mime']) {
case 'image/gif':
$instance->image = imagecreatefromgif($instance->filename);
break;
case 'image/jpeg':
$instance->image = imagecreatefromjpeg($instance->filename);
break;
case 'image/png':
$instance->image = imagecreatefrompng($instance->filename);
imagesavealpha($instance->image, true);
imagealphablending($instance->image, true);
break;
default:
throw new Exception('Invalid image: ' . $instance->filename);
break;
}
$instance->original_info = array('width' => $info[0], 'height' => $info[1], 'orientation' => $instance->get_orientation(), 'exif' => function_exists('exif_read_data') ? $instance->exif = @exif_read_data($instance->filename) : null, 'format' => preg_replace('/^image\\//', '', $info['mime']), 'mime' => $info['mime']);
$instance->width = $info[0];
$instance->height = $info[1];
imagesavealpha($instance->image, true);
imagealphablending($instance->image, true);
return $instance;
}
