ImageValidator.php in Plug 7

Namespace

Symfony\Component\Validator\Constraints

File

lib/Symfony/validator/Symfony/Component/Validator/Constraints/ImageValidator.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[e-mail]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\Validator\Constraints;

use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;

/**
 * Validates whether a value is a valid image file and is valid
 * against minWidth, maxWidth, minHeight and maxHeight constraints.
 *
 * @author Benjamin Dulau <[e-mail]>
 * @author Bernhard Schussek <[e-mail]>
 */
class ImageValidator extends FileValidator {

  /**
   * {@inheritdoc}
   */
  public function validate($value, Constraint $constraint) {
    if (!$constraint instanceof Image) {
      throw new UnexpectedTypeException($constraint, __NAMESPACE__ . '\\Image');
    }
    $violations = count($this->context
      ->getViolations());
    parent::validate($value, $constraint);
    $failed = count($this->context
      ->getViolations()) !== $violations;
    if ($failed || null === $value || '' === $value) {
      return;
    }
    if (null === $constraint->minWidth && null === $constraint->maxWidth && null === $constraint->minHeight && null === $constraint->maxHeight && null === $constraint->minRatio && null === $constraint->maxRatio && $constraint->allowSquare && $constraint->allowLandscape && $constraint->allowPortrait) {
      return;
    }
    $size = @getimagesize($value);
    if (empty($size) || $size[0] === 0 || $size[1] === 0) {
      $this
        ->buildViolation($constraint->sizeNotDetectedMessage)
        ->setCode(Image::SIZE_NOT_DETECTED_ERROR)
        ->addViolation();
      return;
    }
    $width = $size[0];
    $height = $size[1];
    if ($constraint->minWidth) {
      if (!ctype_digit((string) $constraint->minWidth)) {
        throw new ConstraintDefinitionException(sprintf('"%s" is not a valid minimum width', $constraint->minWidth));
      }
      if ($width < $constraint->minWidth) {
        $this
          ->buildViolation($constraint->minWidthMessage)
          ->setParameter('{{ width }}', $width)
          ->setParameter('{{ min_width }}', $constraint->minWidth)
          ->setCode(Image::TOO_NARROW_ERROR)
          ->addViolation();
        return;
      }
    }
    if ($constraint->maxWidth) {
      if (!ctype_digit((string) $constraint->maxWidth)) {
        throw new ConstraintDefinitionException(sprintf('"%s" is not a valid maximum width', $constraint->maxWidth));
      }
      if ($width > $constraint->maxWidth) {
        $this
          ->buildViolation($constraint->maxWidthMessage)
          ->setParameter('{{ width }}', $width)
          ->setParameter('{{ max_width }}', $constraint->maxWidth)
          ->setCode(Image::TOO_WIDE_ERROR)
          ->addViolation();
        return;
      }
    }
    if ($constraint->minHeight) {
      if (!ctype_digit((string) $constraint->minHeight)) {
        throw new ConstraintDefinitionException(sprintf('"%s" is not a valid minimum height', $constraint->minHeight));
      }
      if ($height < $constraint->minHeight) {
        $this
          ->buildViolation($constraint->minHeightMessage)
          ->setParameter('{{ height }}', $height)
          ->setParameter('{{ min_height }}', $constraint->minHeight)
          ->setCode(Image::TOO_LOW_ERROR)
          ->addViolation();
        return;
      }
    }
    if ($constraint->maxHeight) {
      if (!ctype_digit((string) $constraint->maxHeight)) {
        throw new ConstraintDefinitionException(sprintf('"%s" is not a valid maximum height', $constraint->maxHeight));
      }
      if ($height > $constraint->maxHeight) {
        $this
          ->buildViolation($constraint->maxHeightMessage)
          ->setParameter('{{ height }}', $height)
          ->setParameter('{{ max_height }}', $constraint->maxHeight)
          ->setCode(Image::TOO_HIGH_ERROR)
          ->addViolation();
      }
    }
    $ratio = round($width / $height, 2);
    if (null !== $constraint->minRatio) {
      if (!is_numeric((string) $constraint->minRatio)) {
        throw new ConstraintDefinitionException(sprintf('"%s" is not a valid minimum ratio', $constraint->minRatio));
      }
      if ($ratio < $constraint->minRatio) {
        $this
          ->buildViolation($constraint->minRatioMessage)
          ->setParameter('{{ ratio }}', $ratio)
          ->setParameter('{{ min_ratio }}', $constraint->minRatio)
          ->setCode(Image::RATIO_TOO_SMALL_ERROR)
          ->addViolation();
      }
    }
    if (null !== $constraint->maxRatio) {
      if (!is_numeric((string) $constraint->maxRatio)) {
        throw new ConstraintDefinitionException(sprintf('"%s" is not a valid maximum ratio', $constraint->maxRatio));
      }
      if ($ratio > $constraint->maxRatio) {
        $this
          ->buildViolation($constraint->maxRatioMessage)
          ->setParameter('{{ ratio }}', $ratio)
          ->setParameter('{{ max_ratio }}', $constraint->maxRatio)
          ->setCode(Image::RATIO_TOO_BIG_ERROR)
          ->addViolation();
      }
    }
    if (!$constraint->allowSquare && $width == $height) {
      $this
        ->buildViolation($constraint->allowSquareMessage)
        ->setParameter('{{ width }}', $width)
        ->setParameter('{{ height }}', $height)
        ->setCode(Image::SQUARE_NOT_ALLOWED_ERROR)
        ->addViolation();
    }
    if (!$constraint->allowLandscape && $width > $height) {
      $this
        ->buildViolation($constraint->allowLandscapeMessage)
        ->setParameter('{{ width }}', $width)
        ->setParameter('{{ height }}', $height)
        ->setCode(Image::LANDSCAPE_NOT_ALLOWED_ERROR)
        ->addViolation();
    }
    if (!$constraint->allowPortrait && $width < $height) {
      $this
        ->buildViolation($constraint->allowPortraitMessage)
        ->setParameter('{{ width }}', $width)
        ->setParameter('{{ height }}', $height)
        ->setCode(Image::PORTRAIT_NOT_ALLOWED_ERROR)
        ->addViolation();
    }
  }

}

Classes

Name	Description
ImageValidator	Validates whether a value is a valid image file and is valid against minWidth, maxWidth, minHeight and maxHeight constraints.