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https://github.com/chillerlan/php-qrcode.git
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smiley
728 lines
18 KiB
PHP
Executable File
728 lines
18 KiB
PHP
Executable File
<?php
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/**
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* Class QRMatrix
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*
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* @created 15.11.2017
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* @author Smiley <smiley@chillerlan.net>
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* @copyright 2017 Smiley
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* @license MIT
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*/
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namespace chillerlan\QRCode\Data;
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use chillerlan\QRCode\Common\{BitBuffer, EccLevel, MaskPattern, ReedSolomonEncoder, Version};
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use function array_fill, count, floor, range;
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/**
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* Holds an array representation of the final QR Code that contains numerical values for later output modifications;
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* maps the ECC coded binary data and applies the mask pattern
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*
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* @see http://www.thonky.com/qr-code-tutorial/format-version-information
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*/
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class QRMatrix{
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/** @var int */
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public const IS_DARK = 0b100000000000;
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/** @var int */
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public const M_NULL = 0b000000000000;
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/** @var int */
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public const M_DARKMODULE = 0b100000000001;
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/** @var int */
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public const M_DATA = 0b000000000010;
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/** @var int */
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public const M_DATA_DARK = 0b100000000010;
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/** @var int */
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public const M_FINDER = 0b000000000100;
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/** @var int */
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public const M_FINDER_DARK = 0b100000000100;
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/** @var int */
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public const M_SEPARATOR = 0b000000001000;
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/** @var int */
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public const M_ALIGNMENT = 0b000000010000;
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/** @var int */
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public const M_ALIGNMENT_DARK = 0b100000010000;
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/** @var int */
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public const M_TIMING = 0b000000100000;
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/** @var int */
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public const M_TIMING_DARK = 0b100000100000;
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/** @var int */
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public const M_FORMAT = 0b000001000000;
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/** @var int */
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public const M_FORMAT_DARK = 0b100001000000;
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/** @var int */
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public const M_VERSION = 0b000010000000;
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/** @var int */
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public const M_VERSION_DARK = 0b100010000000;
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/** @var int */
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public const M_QUIETZONE = 0b000100000000;
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/** @var int */
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public const M_QUIETZONE_DARK = 0b100100000000;
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/** @var int */
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public const M_LOGO = 0b001000000000;
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/** @var int */
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public const M_LOGO_DARK = 0b101000000000;
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/** @var int */
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public const M_FINDER_DOT = 0b110000000000;
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/** @var int */
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public const M_TEST = 0b011111111111;
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/** @var int */
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public const M_TEST_DARK = 0b111111111111;
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/**
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* Map of flag => coord
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*
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* @see \chillerlan\QRCode\Data\QRMatrix::checkNeighbours()
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*
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* @var array
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*/
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protected const neighbours = [
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0b00000001 => [-1, -1],
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0b00000010 => [ 0, -1],
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0b00000100 => [ 1, -1],
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0b00001000 => [ 1, 0],
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0b00010000 => [ 1, 1],
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0b00100000 => [ 0, 1],
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0b01000000 => [-1, 1],
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0b10000000 => [-1, 0],
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];
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/**
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* the matrix version - always set in QRMatrix, may be null in BitMatrix
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*/
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protected ?Version $version = null;
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/**
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* the current ECC level - always set in QRMatrix, may be null in BitMatrix
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*/
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protected ?EccLevel $eccLevel = null;
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/**
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* the mask pattern that was used in the most recent operation, set via:
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*
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* - QRMatrix::setFormatInfo()
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* - QRMatrix::mask()
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* - BitMatrix::readFormatInformation()
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*/
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protected ?MaskPattern $maskPattern = null;
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/**
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* the size (side length) of the matrix, including quiet zone (if created)
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*/
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protected int $moduleCount;
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/**
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* the actual matrix data array
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*
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* @var int[][]
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*/
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protected array $matrix;
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/**
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* QRMatrix constructor.
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*/
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public function __construct(Version $version, EccLevel $eccLevel){
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$this->version = $version;
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$this->eccLevel = $eccLevel;
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$this->moduleCount = $this->version->getDimension();
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$this->matrix = $this->createMatrix($this->moduleCount, $this::M_NULL);
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}
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/**
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* Creates a 2-dimensional array (square) of the given $size
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*/
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protected function createMatrix(int $size, int $value):array{
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return array_fill(0, $size, array_fill(0, $size, $value));
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}
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/**
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* shortcut to initialize the functional patterns
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*/
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public function initFunctionalPatterns():self{
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return $this
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->setFinderPattern()
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->setSeparators()
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->setAlignmentPattern()
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->setTimingPattern()
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->setDarkModule()
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->setVersionNumber()
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->setFormatInfo()
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;
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}
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/**
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* Returns the data matrix, returns a pure boolean representation if $boolean is set to true
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*
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* @return int[][]|bool[][]
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*/
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public function getMatrix(bool $boolean = null):array{
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$matrix = [];
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foreach($this->matrix as $y => $row){
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$matrix[$y] = [];
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foreach($row as $x => $val){
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$matrix[$y][$x] = $boolean === true
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? $this->checkType($x, $y, $this::IS_DARK)
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: $this->get($x, $y);
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}
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}
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return $matrix;
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}
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/**
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* @deprecated 5.0.0 use QRMatrix::getMatrix() instead
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* @see \chillerlan\QRCode\Data\QRMatrix::getMatrix()
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* @codeCoverageIgnore
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*/
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public function matrix(bool $boolean = null):array{
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return $this->getMatrix($boolean);
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}
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/**
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* Returns the current version number
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*/
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public function getVersion():?Version{
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return $this->version;
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}
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/**
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* @deprecated 5.0.0 use QRMatrix::getVersion() instead
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* @see \chillerlan\QRCode\Data\QRMatrix::getVersion()
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* @codeCoverageIgnore
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*/
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public function version():?Version{
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return $this->getVersion();
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}
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/**
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* Returns the current ECC level
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*/
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public function getEccLevel():?EccLevel{
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return $this->eccLevel;
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}
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/**
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* @deprecated 5.0.0 use QRMatrix::getEccLevel() instead
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* @see \chillerlan\QRCode\Data\QRMatrix::getEccLevel()
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* @codeCoverageIgnore
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*/
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public function eccLevel():?EccLevel{
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return $this->getEccLevel();
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}
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/**
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* Returns the current mask pattern
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*/
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public function getMaskPattern():?MaskPattern{
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return $this->maskPattern;
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}
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/**
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* @deprecated 5.0.0 use QRMatrix::getMaskPattern() instead
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* @see \chillerlan\QRCode\Data\QRMatrix::getMaskPattern()
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* @codeCoverageIgnore
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*/
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public function maskPattern():?MaskPattern{
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return $this->getMaskPattern();
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}
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/**
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* Returns the absoulute size of the matrix, including quiet zone (after setting it).
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*
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* size = version * 4 + 17 [ + 2 * quietzone size]
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*/
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public function getSize():int{
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return $this->moduleCount;
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}
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/**
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* @deprecated 5.0.0 use QRMatrix::getSize() instead
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* @see \chillerlan\QRCode\Data\QRMatrix::getSize()
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* @codeCoverageIgnore
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*/
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public function size():int{
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return $this->getSize();
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}
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/**
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* Returns the value of the module at position [$x, $y] or -1 if the coordinate is outside the matrix
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*/
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public function get(int $x, int $y):int{
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if(!isset($this->matrix[$y][$x])){
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return -1;
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}
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return $this->matrix[$y][$x];
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}
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/**
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* Sets the $M_TYPE value for the module at position [$x, $y]
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*
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* true => $M_TYPE | 0x800
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* false => $M_TYPE
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*/
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public function set(int $x, int $y, bool $value, int $M_TYPE):self{
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if(isset($this->matrix[$y][$x])){
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$this->matrix[$y][$x] = (($M_TYPE & ~$this::IS_DARK) | (($value) ? $this::IS_DARK : 0));
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}
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return $this;
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}
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/**
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* Fills an area of $width * $height, from the given starting point [$startX, $startY] (top left) with $value for $M_TYPE.
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*/
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public function setArea(int $startX, int $startY, int $width, int $height, bool $value, int $M_TYPE):self{
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for($y = $startY; $y < ($startY + $height); $y++){
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for($x = $startX; $x < ($startX + $width); $x++){
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$this->set($x, $y, $value, $M_TYPE);
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}
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}
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return $this;
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}
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/**
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* Checks whether the module at ($x, $y) is of the given $M_TYPE
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*
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* true => $value & $M_TYPE === $M_TYPE
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*/
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public function checkType(int $x, int $y, int $M_TYPE):bool{
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$val = $this->get($x, $y);
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if($val === -1){
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return false;
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}
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return ($val & $M_TYPE) === $M_TYPE;
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}
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/**
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* checks whether the module at ($x, $y) is in the given array of $M_TYPES,
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* returns true if a match is found, otherwise false.
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*/
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public function checkTypeIn(int $x, int $y, array $M_TYPES):bool{
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foreach($M_TYPES as $type){
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if($this->checkType($x, $y, $type)){
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return true;
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}
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}
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return false;
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}
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/**
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* Checks whether the module at ($x, $y) is true (dark) or false (light)
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*/
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public function check(int $x, int $y):bool{
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return $this->checkType($x, $y, $this::IS_DARK);
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}
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/**
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* Checks the status of the neighbouring modules for the module at ($x, $y) and returns a bitmask with the results.
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*
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* The 8 flags of the bitmask represent the status of each of the neighbouring fields,
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* starting with the lowest bit for top left, going clockwise:
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*
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* 1 2 3
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* 8 # 4
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* 7 6 5
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*/
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public function checkNeighbours(int $x, int $y, int $M_TYPE = null):int{
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$bits = 0;
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foreach($this::neighbours as $bit => $coord){
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[$ix, $iy] = $coord;
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$ix += $x;
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$iy += $y;
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// $M_TYPE is given, skip if the field is not the same type
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if($M_TYPE !== null && !$this->checkType($ix, $iy, $M_TYPE)){
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continue;
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}
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if($this->checkType($ix, $iy, $this::IS_DARK)){
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$bits |= $bit;
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}
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}
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return $bits;
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}
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/**
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* Sets the "dark module", that is always on the same position 1x1px away from the bottom left finder
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*
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* 4 * version + 9 or moduleCount - 8
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*/
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public function setDarkModule():self{
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$this->set(8, ($this->moduleCount - 8), true, $this::M_DARKMODULE);
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return $this;
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}
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/**
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* Draws the 7x7 finder patterns in the corners top left/right and bottom left
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*
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* ISO/IEC 18004:2000 Section 7.3.2
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*/
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public function setFinderPattern():self{
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$pos = [
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[0, 0], // top left
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[($this->moduleCount - 7), 0], // top right
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[0, ($this->moduleCount - 7)], // bottom left
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];
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foreach($pos as $c){
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$this
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->setArea($c[0], $c[1], 7, 7, true, $this::M_FINDER)
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->setArea(($c[0] + 1), ($c[1] + 1), 5, 5, false, $this::M_FINDER)
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->setArea(($c[0] + 2), ($c[1] + 2), 3, 3, true, $this::M_FINDER_DOT)
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;
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}
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return $this;
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}
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/**
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* Draws the separator lines around the finder patterns
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*
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* ISO/IEC 18004:2000 Section 7.3.3
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*/
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public function setSeparators():self{
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$h = [
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[7, 0],
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[($this->moduleCount - 8), 0],
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[7, ($this->moduleCount - 8)],
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];
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$v = [
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[7, 7],
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[($this->moduleCount - 1), 7],
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[7, ($this->moduleCount - 8)],
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];
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for($c = 0; $c < 3; $c++){
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for($i = 0; $i < 8; $i++){
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$this->set($h[$c][0] , ($h[$c][1] + $i), false, $this::M_SEPARATOR);
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$this->set(($v[$c][0] - $i), $v[$c][1] , false, $this::M_SEPARATOR);
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}
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}
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return $this;
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}
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/**
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* Draws the 5x5 alignment patterns
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*
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* ISO/IEC 18004:2000 Section 7.3.5
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*/
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public function setAlignmentPattern():self{
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$alignmentPattern = $this->version->getAlignmentPattern();
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foreach($alignmentPattern as $y){
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foreach($alignmentPattern as $x){
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// skip existing patterns
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if($this->matrix[$y][$x] !== $this::M_NULL){
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continue;
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}
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$this
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->setArea(($x - 2), ($y - 2), 5, 5, true, $this::M_ALIGNMENT)
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->setArea(($x - 1), ($y - 1), 3, 3, false, $this::M_ALIGNMENT)
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->set($x, $y, true, $this::M_ALIGNMENT)
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;
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}
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}
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return $this;
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}
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/**
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* Draws the timing pattern (h/v checkered line between the finder patterns)
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*
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* ISO/IEC 18004:2000 Section 7.3.4
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*/
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public function setTimingPattern():self{
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foreach(range(8, ($this->moduleCount - 8 - 1)) as $i){
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if($this->matrix[6][$i] !== $this::M_NULL || $this->matrix[$i][6] !== $this::M_NULL){
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continue;
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}
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$v = ($i % 2) === 0;
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$this->set($i, 6, $v, $this::M_TIMING); // h
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$this->set(6, $i, $v, $this::M_TIMING); // v
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}
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return $this;
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}
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/**
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* Draws the version information, 2x 3x6 pixel
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*
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* ISO/IEC 18004:2000 Section 8.10
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*/
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public function setVersionNumber():self{
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$bits = $this->version->getVersionPattern();
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if($bits !== null){
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for($i = 0; $i < 18; $i++){
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$a = (int)($i / 3);
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$b = (($i % 3) + ($this->moduleCount - 8 - 3));
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$v = (($bits >> $i) & 1) === 1;
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$this->set($b, $a, $v, $this::M_VERSION); // ne
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$this->set($a, $b, $v, $this::M_VERSION); // sw
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}
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}
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return $this;
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}
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/**
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* Draws the format info along the finder patterns. If no $maskPattern, all format info modules will be set to false.
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*
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* ISO/IEC 18004:2000 Section 8.9
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*/
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public function setFormatInfo(MaskPattern $maskPattern = null):self{
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$this->maskPattern = $maskPattern;
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$bits = ($this->maskPattern instanceof MaskPattern)
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? $this->eccLevel->getformatPattern($this->maskPattern)
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: 0; // sets all format fields to false (test mode)
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for($i = 0; $i < 15; $i++){
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$v = (($bits >> $i) & 1) === 1;
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if($i < 6){
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$this->set(8, $i, $v, $this::M_FORMAT);
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}
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elseif($i < 8){
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$this->set(8, ($i + 1), $v, $this::M_FORMAT);
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}
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else{
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$this->set(8, ($this->moduleCount - 15 + $i), $v, $this::M_FORMAT);
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}
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if($i < 8){
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$this->set(($this->moduleCount - $i - 1), 8, $v, $this::M_FORMAT);
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}
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elseif($i < 9){
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$this->set(((15 - $i)), 8, $v, $this::M_FORMAT);
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}
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else{
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$this->set((15 - $i - 1), 8, $v, $this::M_FORMAT);
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}
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}
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return $this;
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}
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/**
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* Draws the "quiet zone" of $size around the matrix
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*
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* ISO/IEC 18004:2000 Section 7.3.7
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*
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* @throws \chillerlan\QRCode\Data\QRCodeDataException
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*/
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public function setQuietZone(int $quietZoneSize):self{
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if($this->matrix[($this->moduleCount - 1)][($this->moduleCount - 1)] === $this::M_NULL){
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throw new QRCodeDataException('use only after writing data');
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}
|
|
|
|
// create a matrix with the new size
|
|
$newSize = ($this->moduleCount + ($quietZoneSize * 2));
|
|
$newMatrix = $this->createMatrix($newSize, $this::M_QUIETZONE);
|
|
|
|
// copy over the current matrix
|
|
for($y = 0; $y < $this->moduleCount; $y++){
|
|
for($x = 0; $x < $this->moduleCount; $x++){
|
|
$newMatrix[($y + $quietZoneSize)][($x + $quietZoneSize)] = $this->matrix[$y][$x];
|
|
}
|
|
}
|
|
|
|
// set the new values
|
|
$this->moduleCount = $newSize;
|
|
$this->matrix = $newMatrix;
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Clears a space of $width * $height in order to add a logo or text.
|
|
* If no $height is given, the space will be assumed a square of $width.
|
|
*
|
|
* Additionally, the logo space can be positioned within the QR Code - respecting the main functional patterns -
|
|
* using $startX and $startY. If either of these are null, the logo space will be centered in that direction.
|
|
* ECC level "H" (30%) is required.
|
|
*
|
|
* The coordinates of $startX and $startY do not include the quiet zone:
|
|
* [0, 0] is always the top left module of the top left finder pattern, negative values go into the quiet zone top and left.
|
|
*
|
|
* Please note that adding a logo space minimizes the error correction capacity of the QR Code and
|
|
* created images may become unreadable, especially when printed with a chance to receive damage.
|
|
* Please test thoroughly before using this feature in production.
|
|
*
|
|
* This method should be called from within an output module (after the matrix has been filled with data).
|
|
* Note that there is no restiction on how many times this method could be called on the same matrix instance.
|
|
*
|
|
* @link https://github.com/chillerlan/php-qrcode/issues/52
|
|
*
|
|
* @throws \chillerlan\QRCode\Data\QRCodeDataException
|
|
*/
|
|
public function setLogoSpace(int $width, int $height = null, int $startX = null, int $startY = null):self{
|
|
|
|
// for logos, we operate in ECC H (30%) only
|
|
if($this->eccLevel->getLevel() !== EccLevel::H){
|
|
throw new QRCodeDataException('ECC level "H" required to add logo space');
|
|
}
|
|
|
|
if($height === null){
|
|
$height = $width;
|
|
}
|
|
|
|
// if width and height happen to be negative or 0 (default value), just return - nothing to do
|
|
if($width <= 0 || $height <= 0){
|
|
return $this; // @codeCoverageIgnore
|
|
}
|
|
|
|
// $this->moduleCount includes the quiet zone (if created), we need the QR size here
|
|
$length = $this->version->getDimension();
|
|
|
|
// throw if the size is exceeds the qrcode size
|
|
if($width > $length || $height > $length){
|
|
throw new QRCodeDataException('logo dimensions exceed matrix size');
|
|
}
|
|
|
|
// we need uneven sizes to center the logo space, adjust if needed
|
|
if($startX === null && ($width % 2) === 0){
|
|
$width++;
|
|
}
|
|
|
|
if($startY === null && ($height % 2) === 0){
|
|
$height++;
|
|
}
|
|
|
|
// throw if the logo space exceeds the maximum error correction capacity
|
|
if(($width * $height) > floor($length * $length * 0.2)){
|
|
throw new QRCodeDataException('logo space exceeds the maximum error correction capacity');
|
|
}
|
|
|
|
// quiet zone size
|
|
$qz = (($this->moduleCount - $length) / 2);
|
|
// skip quiet zone and the first 9 rows/columns (finder-, mode-, version- and timing patterns)
|
|
$start = ($qz + 9);
|
|
// skip quiet zone
|
|
$end = ($this->moduleCount - $qz);
|
|
|
|
// determine start coordinates
|
|
$startX = ((($startX !== null) ? $startX : ($length - $width) / 2) + $qz);
|
|
$startY = ((($startY !== null) ? $startY : ($length - $height) / 2) + $qz);
|
|
$endX = ($startX + $width);
|
|
$endY = ($startY + $height);
|
|
|
|
// clear the space
|
|
for($y = $startY; $y < $endY; $y++){
|
|
for($x = $startX; $x < $endX; $x++){
|
|
// out of bounds, skip
|
|
if($x < $start || $y < $start ||$x >= $end || $y >= $end){
|
|
continue;
|
|
}
|
|
|
|
$this->set($x, $y, false, $this::M_LOGO);
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Maps the interleaved binary $data on the matrix
|
|
*/
|
|
public function writeCodewords(BitBuffer $bitBuffer):self{
|
|
$data = (new ReedSolomonEncoder($this->version, $this->eccLevel))->interleaveEcBytes($bitBuffer);
|
|
$byteCount = count($data);
|
|
$iByte = 0;
|
|
$iBit = 7;
|
|
$direction = true;
|
|
|
|
for($i = ($this->moduleCount - 1); $i > 0; $i -= 2){
|
|
|
|
// skip vertical alignment pattern
|
|
if($i === 6){
|
|
$i--;
|
|
}
|
|
|
|
for($count = 0; $count < $this->moduleCount; $count++){
|
|
$y = ($direction) ? ($this->moduleCount - 1 - $count) : $count;
|
|
|
|
for($col = 0; $col < 2; $col++){
|
|
$x = ($i - $col);
|
|
|
|
// skip functional patterns
|
|
if($this->get($x, $y) !== $this::M_NULL){
|
|
continue;
|
|
}
|
|
|
|
$v = $iByte < $byteCount && (($data[$iByte] >> $iBit--) & 1) === 1;
|
|
|
|
$this->set($x, $y, $v, $this::M_DATA);
|
|
|
|
if($iBit === -1){
|
|
$iByte++;
|
|
$iBit = 7;
|
|
}
|
|
}
|
|
}
|
|
|
|
$direction = !$direction; // switch directions
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Applies/reverses the mask pattern
|
|
*
|
|
* ISO/IEC 18004:2000 Section 8.8.1
|
|
*/
|
|
public function mask(MaskPattern $maskPattern):self{
|
|
$this->maskPattern = $maskPattern;
|
|
$mask = $this->maskPattern->getMask();
|
|
|
|
foreach($this->matrix as $y => $row){
|
|
foreach($row as $x => $val){
|
|
// skip non-data modules
|
|
if(($val & $this::M_DATA) !== $this::M_DATA){
|
|
continue;
|
|
}
|
|
|
|
if($mask($x, $y)){
|
|
$this->set($x, $y, ($val & $this::IS_DARK) !== $this::IS_DARK, $val);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
}
|