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<?php |
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/** |
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* Class MaskPattern |
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* |
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* @filesource MaskPattern.php |
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* @created 19.01.2021 |
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* @package chillerlan\QRCode\Common |
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* @author smiley <[email protected]> |
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* @copyright 2021 smiley |
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* @license MIT |
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*/ |
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namespace chillerlan\QRCode\Common; |
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use chillerlan\QRCode\QRCodeException; |
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use Closure; |
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/** |
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* |
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*/ |
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class MaskPattern{ |
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public const PATTERN_000 = 0b000; |
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public const PATTERN_001 = 0b001; |
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public const PATTERN_010 = 0b010; |
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public const PATTERN_011 = 0b011; |
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public const PATTERN_100 = 0b100; |
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public const PATTERN_101 = 0b101; |
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public const PATTERN_110 = 0b110; |
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public const PATTERN_111 = 0b111; |
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public const PATTERNS = [ |
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self::PATTERN_000, |
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self::PATTERN_001, |
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self::PATTERN_010, |
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self::PATTERN_011, |
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self::PATTERN_100, |
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self::PATTERN_101, |
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self::PATTERN_110, |
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self::PATTERN_111, |
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]; |
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private int $maskPattern; |
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/** |
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* MaskPattern constructor. |
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* |
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* ISO/IEC 18004:2000 Section 8.8.1 |
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* |
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* @throws \chillerlan\QRCode\QRCodeException |
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*/ |
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public function __construct(int $maskPattern){ |
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if((0b111 & $maskPattern) !== $maskPattern){ |
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throw new QRCodeException('invalid mask pattern'); // @codeCoverageIgnore |
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} |
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$this->maskPattern = $maskPattern; |
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} |
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public function getPattern():int{ |
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return $this->maskPattern; |
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} |
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/** |
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* ISO/IEC 18004:2000 Section 8.8.1 |
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* |
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* Note that some versions of the QR code standard have had errors in the section about mask patterns. |
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* The information below has been corrected. (https://www.thonky.com/qr-code-tutorial/mask-patterns) |
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*/ |
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public function getMask():Closure{ |
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return [ |
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self::PATTERN_000 => fn($x, $y):int => ($x + $y) % 2, |
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self::PATTERN_001 => fn($x, $y):int => $y % 2, |
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self::PATTERN_010 => fn($x, $y):int => $x % 3, |
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self::PATTERN_011 => fn($x, $y):int => ($x + $y) % 3, |
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self::PATTERN_100 => fn($x, $y):int => ((int)($y / 2) + (int)($x / 3)) % 2, |
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self::PATTERN_101 => fn($x, $y):int => (($x * $y) % 2) + (($x * $y) % 3), |
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self::PATTERN_110 => fn($x, $y):int => ((($x * $y) % 2) + (($x * $y) % 3)) % 2, |
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self::PATTERN_111 => fn($x, $y):int => ((($x * $y) % 3) + (($x + $y) % 2)) % 2, |
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][$this->maskPattern]; |
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} |
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} |
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chillerlan /
php-qrcode
This check looks for parameters that have been defined for a function or method, but which are not used in the method body.