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<?php declare(strict_types=1); |
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namespace Formularium\Validator; |
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use Formularium\Datatype; |
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use Formularium\Exception\ValidatorException; |
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use Formularium\Model; |
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use Formularium\MetadataParameter; |
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use Formularium\ValidatorInterface; |
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use Formularium\Metadata; |
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/** |
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* Image file validation |
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*/ |
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class Image implements ValidatorInterface |
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{ |
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const DIMENSION_WIDTH = 'dimensionWidth'; |
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const DIMENSION_HEIGHT = 'dimensionHeight'; |
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const DIMENSION_MIN_WIDTH = 'dimensionMinWidth'; |
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const DIMENSION_MAX_WIDTH = 'dimensionMaxWidth'; |
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const DIMENSION_MIN_HEIGHT = 'dimensionMinHeight'; |
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const DIMENSION_MAX_HEIGHT = 'dimensionMaxHeight'; |
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const DIMENSION_RATIO = 'dimensionRatio'; |
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protected static function dimension(array $options = [], int $width, int $height): void |
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{ |
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$expectedHeight = $options[self::DIMENSION_HEIGHT] ?? false; |
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if ($expectedHeight !== false && $expectedHeight !== $height) { |
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throw new ValidatorException( |
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'Image height should be exactly ' . $expectedHeight |
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); |
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} |
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$expectedWidth = $options[self::DIMENSION_WIDTH] ?? false; |
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if ($expectedWidth !== false && $expectedWidth !== $width) { |
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throw new ValidatorException( |
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'Image width should be exactly ' . $expectedWidth |
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); |
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} |
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$minHeight = $options[self::DIMENSION_MIN_HEIGHT] ?? false; |
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if ($minHeight !== false && $height < $minHeight) { |
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throw new ValidatorException( |
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'Image height should be at least ' . $minHeight |
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); |
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} |
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$minWidth = $options[self::DIMENSION_MIN_WIDTH] ?? false; |
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if ($minWidth !== false && $width < $minWidth) { |
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throw new ValidatorException( |
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'Image width should be at least ' . $minWidth |
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); |
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} |
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$maxHeight = $options[self::DIMENSION_MAX_HEIGHT] ?? false; |
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if ($maxHeight !== false && $height > $maxHeight) { |
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throw new ValidatorException( |
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'Image height should be at most ' . $maxHeight |
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); |
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} |
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$maxWidth = $options[self::DIMENSION_MAX_WIDTH] ?? false; |
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if ($maxWidth !== false && $width > $maxWidth) { |
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throw new ValidatorException( |
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'Image width should be at most ' . $maxWidth |
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); |
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} |
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$ratio = $options[self::DIMENSION_RATIO] ?? false; |
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if ($ratio !== false) { |
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if (!$width || !$height) { |
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throw new ValidatorException( |
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'Zero width or height' |
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); |
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} |
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$ratio = $width/$height; |
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$expected = $ratio; |
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if (abs(($ratio-$expected)/$expected) > 0.0001) { |
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throw new ValidatorException( |
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'Image width/height ratio should be ' . $ratio |
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); |
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} |
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} |
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} |
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public static function validate($value, array $options = [], ?Model $model = null) |
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{ |
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$imageData = getimagesize($value); |
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if ($imageData === false) { |
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throw new ValidatorException( |
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'Not an image' |
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); |
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} |
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if (($options[self::DIMENSION_HEIGHT] ?? false) || |
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($options[self::DIMENSION_WIDTH] ?? false) || |
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($options[self::DIMENSION_MIN_HEIGHT] ?? false) || |
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($options[self::DIMENSION_MIN_WIDTH] ?? false) || |
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($options[self::DIMENSION_MAX_HEIGHT] ?? false) || |
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($options[self::DIMENSION_MAX_WIDTH] ?? false) || |
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($options[self::DIMENSION_RATIO] ?? false) |
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) { |
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$width = $imageData[0]; |
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$height = $imageData[1]; |
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static::dimension($options, $width, $height); |
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} |
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return $value; |
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} |
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public static function getMetadata(): Metadata |
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{ |
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return new Metadata( |
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'Image', |
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"Image file validations.", |
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[ |
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new MetadataParameter( |
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self::DIMENSION_RATIO, |
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'Float', |
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'The expected ratio (width/height)' |
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) |
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// TODO: missing args |
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] |
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); |
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} |
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} |
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Corollarium /
Formularium
