/**
* Hydrate and render an image variation with parent data.
*
* You can use this to create a variation with a source image
*
* @param Image $parent
* @param ImageVariation $variation
*
* @return ImageVariation
*
* @throws BadImageException
* @throws ImageManagerException
*/
protected function hydrateVariation(Image $parent, ImageVariation &$variation)
{
if (!$parent->isHydrated()) {
throw new ImageManagerException('Parent: ' . self::ERR_NOT_HYDRATED);
}
$quality = $variation->getQuality() ?: 90;
if ($quality < 1) {
$quality = 1;
} elseif ($quality > 100) {
$quality = 100;
}
$variation->setData(null);
$input = $parent->getData();
foreach ($this->encoders as $encoder) {
if ($encoder->supports($input)) {
$encoder->setData($input);
$variation->setData($encoder->createVariation($variation->getFormat(), $quality, $variation->getDimensions(), $variation->getCropDimensions()));
$encoder->setData(null);
break;
}
}
if (!$variation->getData()) {
throw new NoSupportedEncoderException('There is no known encoder for this data type');
}
return $variation;
}
/**
* @medium
*/
public function testVariationLocalCreate()
{
$fn = __DIR__ . '/../Resources/image.png';
$im = new ImageManager(new Filesystem(new LocalAdapter(static::$tmp_dir . 'remote')));
$source = $im->loadFromFile($fn, self::TEST_KEY);
// Create and render the variation
$var = $im->createVariation($source, ImageFormat::JPEG(), 50);
$this->assertFalse($var->isPersistent());
$this->assertTrue($var->isHydrated());
// Test the local save
$im->save($var, self::$tmp_dir . 'local/variation.jpg');
$this->assertFalse($var->isPersistent());
$im->push($var);
$this->assertTrue($var->isPersistent());
// Test the pull
$var_pull = new ImageVariation(self::TEST_KEY, ImageFormat::JPEG(), 50);
$this->assertFalse($var_pull->isPersistent());
$this->assertFalse($var_pull->isHydrated());
$im->pull($var_pull);
$this->assertTrue($var_pull->isPersistent());
$this->assertTrue($var_pull->isHydrated());
$im->save($var_pull, self::$tmp_dir . 'local/variation_pulled.jpg');
// Test an auto-pull
$var_autopull = new ImageVariation(self::TEST_KEY, ImageFormat::JPEG(), 50);
$this->assertFalse($var_autopull->isPersistent());
$this->assertFalse($var_autopull->isHydrated());
$im->save($var_autopull, self::$tmp_dir . 'local/variation_autopulled.jpg');
// Image data should be identical - no loss
$md5_a = md5_file(self::$tmp_dir . 'local/variation.jpg');
$md5_b = md5_file(self::$tmp_dir . 'local/variation_pulled.jpg');
$md5_c = md5_file(self::$tmp_dir . 'local/variation_autopulled.jpg');
$this->assertEquals($md5_a, $md5_b);
$this->assertEquals($md5_a, $md5_c);
}
