CaptchaBundle/Generator/CaptchaGenerator.php
Gregwar 39e2f390f0 Merge commit 'be90f19'
Conflicts:
	DependencyInjection/Configuration.php
	Generator/CaptchaGenerator.php
	composer.json
2013-04-22 00:35:49 +02:00

153 lines
4.1 KiB
PHP

<?php
namespace Gregwar\CaptchaBundle\Generator;
use Symfony\Component\Finder\Finder;
use Symfony\Component\HttpFoundation\Session\SessionInterface;
use Symfony\Component\Routing\RouterInterface;
use Gregwar\Captcha\CaptchaBuilderInterface;
use Gregwar\Captcha\PhraseBuilderInterface;
/**
* Uses configuration parameters to call the services that generate captcha images
*
* @author Gregwar <g.passault@gmail.com>
* @author Jeremy Livingston <jeremy.j.livingston@gmail.com>
*/
class CaptchaGenerator
{
/**
* @var \Symfony\Component\Routing\RouterInterface
*/
protected $router;
/**
* @var CaptchaBuilder
*/
protected $builder;
/**
* @var PhraseBuilder
*/
protected $phraseBuilder;
/**
* @var ImageFileHandler
*/
protected $imageFileHandler;
/**
* @param \Symfony\Component\Routing\RouterInterface $router
* @param CaptchaBuilderInterface $builder
* @param ImageFileHandlerInterface $imageFileHandler
*/
public function __construct(RouterInterface $router, CaptchaBuilderInterface $builder, PhraseBuilderInterface $phraseBuilder, ImageFileHandler $imageFileHandler)
{
$this->router = $router;
$this->builder = $builder;
$this->phraseBuilder = $phraseBuilder;
$this->imageFileHandler = $imageFileHandler;
}
/**
* Get the captcha URL, stream, or filename that will go in the image's src attribute
*
* @param $key
* @param array $options
*
* @return array
*/
public function getCaptchaCode(array &$options)
{
$this->builder->setPhrase($this->getPhrase($options));
// Randomly execute garbage collection and returns the image filename
if ($options['as_file']) {
$this->imageFileHandler->collectGarbage();
return $this->generate($options);
}
// Returns the image generation URL
if ($options['as_url']) {
return $this->router->generate('gregwar_captcha.generate_captcha', array('key' => $options['session_key']));
}
return 'data:image/jpeg;base64,' . base64_encode($this->generate($options));
}
/**
* Sets the phrase to the builder
*/
public function setPhrase($phrase)
{
$this->builder->setPhrase($phrase);
}
/**
* @param string $key
* @param array $options
*
* @return string
*/
public function generate(array &$options)
{
$this->builder->setDistortion($options['distortion']);
$this->builder->setMaxFrontLines($options['max_front_lines']);
$this->builder->setMaxBehindLines($options['max_behind_lines']);
if ($options['backgroundColor'] != array()) {
if (count($options['backgroundColor'])!=3) {
throw new \RuntimeException('backgroundColor should be an array of r, g and b');
}
$color = $options['backgroundColor'];
$this->builder->setBackgroundColor($color[0], $color[1], $color[2]);
}
$fingerprint = isset($options['fingerprint']) ? $options['fingerprint'] : null;
$content = $this->builder->build(
$options['width'],
$options['height'],
$options['font'],
$fingerprint
)->getGd();
if ($options['keep_value']) {
$options['fingerprint'] = $this->builder->getFingerprint();
}
if (!$options['as_file']) {
ob_start();
imagejpeg($content, null, $options['quality']);
return ob_get_clean();
}
return $this->imageFileHandler->saveAsFile($content);
}
/**
* @param string $key
* @param array $options
*
* @return string
*/
public function getPhrase(array &$options)
{
// Get the phrase that we'll use for this image
if ($options['keep_value'] && isset($options['phrase'])) {
$phrase = $options['phrase'];
} else {
$phrase = $this->phraseBuilder->build($options['length'], $options['charset']);
$options['phrase'] = $phrase;
}
return $phrase;
}
}