<?php
namespace Intervention\Image;
use Closure;
use Intervention\Image\Exception\MissingDependencyException;
use Intervention\Image\Exception\NotSupportedException;
class ImageManager
{
/**
* Config
*
* @var array
*/
public $config = [
'driver' => 'gd'
];
/**
* Creates new instance of Image Manager
*
* @param array $config
*/
public function __construct(array $config = [])
{
$this->checkRequirements();
$this->configure($config);
}
/**
* Overrides configuration settings
*
* @param array $config
*
* @return self
*/
public function configure(array $config = [])
{
$this->config = array_replace($this->config, $config);
return $this;
}
/**
* Initiates an Image instance from different input types
*
* @param mixed $data
*
* @return \Intervention\Image\Image
*/
public function make($data)
{
return $this->createDriver()->init($data);
}
/**
* Creates an empty image canvas
*
* @param int $width
* @param int $height
* @param mixed $background
*
* @return \Intervention\Image\Image
*/
public function canvas($width, $height, $background = null)
{
return $this->createDriver()->newImage($width, $height, $background);
}
/**
* Create new cached image and run callback
* (requires additional package intervention/imagecache)
*
* @param Closure $callback
* @param int $lifetime
* @param boolean $returnObj
*
* @return Image
*/
public function cache(Closure $callback, $lifetime = null, $returnObj = false)
{
if (class_exists('Intervention\\Image\\ImageCache')) {
// create imagecache
$imagecache = new ImageCache($this);
// run callback
if (is_callable($callback)) {
$callback($imagecache);
}
return $imagecache->get($lifetime, $returnObj);
}
throw new MissingDependencyException(
"Please install package intervention/imagecache before running this function."
);
}
/**
* Creates a driver instance according to config settings
*
* @return \Intervention\Image\AbstractDriver
*/
private function createDriver()
{
if (is_string($this->config['driver'])) {
$drivername = ucfirst($this->config['driver']);
$driverclass = sprintf('Intervention\\Image\\%s\\Driver', $drivername);
if (class_exists($driverclass)) {
return new $driverclass;
}
throw new NotSupportedException(
"Driver ({$drivername}) could not be instantiated."
);
}
if ($this->config['driver'] instanceof AbstractDriver) {
return $this->config['driver'];
}
throw new NotSupportedException(
"Unknown driver type."
);
}
/**
* Check if all requirements are available
*
* @return void
*/
private function checkRequirements()
{
if ( ! function_exists('finfo_buffer')) {
throw new MissingDependencyException(
"PHP Fileinfo extension must be installed/enabled to use Intervention Image."
);
}
}
}
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