woocommerce-pos / vendor_prefixed / chillerlan / php-qrcode / src / Output / QROutputAbstract.php

QROutputAbstract.php in WCPOS – Point of Sale (POS) plugin for WooCommerce 1.9.15, at vendor_prefixed/chillerlan/php-qrcode/src/Output/QROutputAbstract.php

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1	<?php
2
3	/**
4	* Class QROutputAbstract
5	*
6	* @created 09.12.2015
7	* @author Smiley <smiley@chillerlan.net>
8	* @copyright 2015 Smiley
9	* @license MIT
10	*/
11	namespace WCPOS\Vendor\chillerlan\QRCode\Output;
12
13	use WCPOS\Vendor\chillerlan\QRCode\Data\QRMatrix;
14	use WCPOS\Vendor\chillerlan\Settings\SettingsContainerInterface;
15	use Closure;
16	use function base64_encode, dirname, file_put_contents, is_writable, ksort, sprintf;
17	/**
18	* common output abstract
19	*/
20	abstract class QROutputAbstract implements QROutputInterface
21	{
22	/**
23	* the current size of the QR matrix
24	*
25	* @see \chillerlan\QRCode\Data\QRMatrix::getSize()
26	*/
27	protected int $moduleCount;
28	/**
29	* the side length of the QR image (modules * scale)
30	*/
31	protected int $length;
32	/**
33	* an (optional) array of color values for the several QR matrix parts
34	*/
35	protected array $moduleValues;
36	/**
37	* the (filled) data matrix object
38	*/
39	protected QRMatrix $matrix;
40	/**
41	* @var \chillerlan\Settings\SettingsContainerInterface\|\chillerlan\QRCode\QROptions
42	*/
43	protected SettingsContainerInterface $options;
44	/** @see \chillerlan\QRCode\QROptions::$scale */
45	protected int $scale;
46	/** @see \chillerlan\QRCode\QROptions::$connectPaths */
47	protected bool $connectPaths;
48	/** @see \chillerlan\QRCode\QROptions::$excludeFromConnect */
49	protected array $excludeFromConnect;
50	/** @see \chillerlan\QRCode\QROptions::$eol */
51	protected string $eol;
52	/** @see \chillerlan\QRCode\QROptions::$drawLightModules */
53	protected bool $drawLightModules;
54	/** @see \chillerlan\QRCode\QROptions::$drawCircularModules */
55	protected bool $drawCircularModules;
56	/** @see \chillerlan\QRCode\QROptions::$keepAsSquare */
57	protected array $keepAsSquare;
58	/** @see \chillerlan\QRCode\QROptions::$circleRadius */
59	protected float $circleRadius;
60	protected float $circleDiameter;
61	/**
62	* QROutputAbstract constructor.
63	*/
64	public function __construct(SettingsContainerInterface $options, QRMatrix $matrix)
65	{
66	$this->options = $options;
67	$this->matrix = $matrix;
68	if ($this->options->invertMatrix) {
69	$this->matrix->invert();
70	}
71	$this->copyVars();
72	$this->setMatrixDimensions();
73	$this->setModuleValues();
74	}
75	/**
76	* Creates copies of several QROptions values to avoid calling the magic getters
77	* in long loops for a significant performance increase.
78	*
79	* These variables are usually used in the "module" methods and are called up to 31329 times (at version 40).
80	*/
81	protected function copyVars() : void
82	{
83	$vars = ['connectPaths', 'excludeFromConnect', 'eol', 'drawLightModules', 'drawCircularModules', 'keepAsSquare', 'circleRadius'];
84	foreach ($vars as $property) {
85	$this->{$property} = $this->options->{$property};
86	}
87	$this->circleDiameter = $this->circleRadius * 2;
88	}
89	/**
90	* Sets/updates the matrix dimensions
91	*
92	* Call this method if you modify the matrix from within your custom module in case the dimensions have been changed
93	*/
94	protected function setMatrixDimensions() : void
95	{
96	$this->moduleCount = $this->matrix->getSize();
97	$this->scale = $this->options->scale;
98	$this->length = $this->moduleCount * $this->scale;
99	}
100	/**
101	* Returns a 2 element array with the current output width and height
102	*
103	* The type and units of the values depend on the output class. The default value is the current module count * scale.
104	*/
105	protected function getOutputDimensions() : array
106	{
107	return [$this->length, $this->length];
108	}
109	/**
110	* Sets the initial module values
111	*/
112	protected function setModuleValues() : void
113	{
114	// first fill the map with the default values
115	foreach ($this::DEFAULT_MODULE_VALUES as $M_TYPE => $defaultValue) {
116	$this->moduleValues[$M_TYPE] = $this->getDefaultModuleValue($defaultValue);
117	}
118	// now loop over the options values to replace defaults and add extra values
119	foreach ($this->options->moduleValues as $M_TYPE => $value) {
120	if ($this::moduleValueIsValid($value)) {
121	$this->moduleValues[$M_TYPE] = $this->prepareModuleValue($value);
122	}
123	}
124	}
125	/**
126	* Prepares the value for the given input (return value depends on the output class)
127	*
128	* @param mixed $value
129	*
130	* @return mixed\|null
131	*/
132	protected abstract function prepareModuleValue($value);
133	/**
134	* Returns a default value for either dark or light modules (return value depends on the output class)
135	*
136	* @return mixed\|null
137	*/
138	protected abstract function getDefaultModuleValue(bool $isDark);
139	/**
140	* Returns the prepared value for the given $M_TYPE
141	*
142	* @return mixed return value depends on the output class
143	* @throws \chillerlan\QRCode\Output\QRCodeOutputException if $moduleValues[$M_TYPE] doesn't exist
144	*/
145	protected function getModuleValue(int $M_TYPE)
146	{
147	if (!isset($this->moduleValues[$M_TYPE])) {
148	throw new QRCodeOutputException(sprintf('$M_TYPE %012b not found in module values map', $M_TYPE));
149	}
150	return $this->moduleValues[$M_TYPE];
151	}
152	/**
153	* Returns the prepared module value at the given coordinate [$x, $y] (convenience)
154	*
155	* @return mixed\|null
156	*/
157	protected function getModuleValueAt(int $x, int $y)
158	{
159	return $this->getModuleValue($this->matrix->get($x, $y));
160	}
161	/**
162	* Returns a base64 data URI for the given string and mime type
163	*/
164	protected function toBase64DataURI(string $data, ?string $mime = null) : string
165	{
166	return sprintf('data:%s;base64,%s', $mime ?? $this::MIME_TYPE, base64_encode($data));
167	}
168	/**
169	* Saves the qr $data to a $file. If $file is null, nothing happens.
170	*
171	* @see file_put_contents()
172	* @see \chillerlan\QRCode\QROptions::$cachefile
173	*
174	* @throws \chillerlan\QRCode\Output\QRCodeOutputException
175	*/
176	protected function saveToFile(string $data, ?string $file = null) : void
177	{
178	if ($file === null) {
179	return;
180	}
181	if (!is_writable(dirname($file))) {
182	throw new QRCodeOutputException(sprintf('Cannot write data to cache file: %s', $file));
183	}
184	if (file_put_contents($file, $data) === \false) {
185	throw new QRCodeOutputException(sprintf('Cannot write data to cache file: %s (file_put_contents error)', $file));
186	}
187	}
188	/**
189	* collects the modules per QRMatrix::M_* type and runs a $transform function on each module and
190	* returns an array with the transformed modules
191	*
192	* The transform callback is called with the following parameters:
193	*
194	* $x - current column
195	* $y - current row
196	* $M_TYPE - field value
197	* $M_TYPE_LAYER - (possibly modified) field value that acts as layer id
198	*
199	* @deprecated 5.0.5 The parameter $transform will be removed in the next major version
200	* in favor of a concrete method QROutputAbstract::moduleTransform()
201	* @see \chillerlan\QRCode\Output\QROutputAbstract::moduleTransform()
202	*/
203	protected function collectModules(Closure $transform) : array
204	{
205	$paths = [];
206	// collect the modules for each type
207	foreach ($this->matrix->getMatrix() as $y => $row) {
208	foreach ($row as $x => $M_TYPE) {
209	$M_TYPE_LAYER = $M_TYPE;
210	if ($this->connectPaths && !$this->matrix->checkTypeIn($x, $y, $this->excludeFromConnect)) {
211	// to connect paths we'll redeclare the $M_TYPE_LAYER to data only
212	$M_TYPE_LAYER = QRMatrix::M_DATA;
213	if ($this->matrix->isDark($M_TYPE)) {
214	$M_TYPE_LAYER = QRMatrix::M_DATA_DARK;
215	}
216	}
217	// collect the modules per $M_TYPE
218	$module = $transform($x, $y, $M_TYPE, $M_TYPE_LAYER);
219	if (!empty($module)) {
220	$paths[$M_TYPE_LAYER][] = $module;
221	}
222	}
223	}
224	// beautify output
225	ksort($paths);
226	return $paths;
227	}
228	/**
229	* The transform callback for the module collector
230	*
231	* $x - current column
232	* $y - current row
233	* $M_TYPE - field value
234	* $M_TYPE_LAYER - (possibly modified) field value that acts as layer id ($paths array key)
235	*
236	* This method should return a value suitable for the current output class.
237	* It must return `null` for an empty value.
238	*
239	* @see \chillerlan\QRCode\Output\QROutputAbstract::collectModules()
240	* @return mixed\|null
241	*/
242	protected function moduleTransform(int $x, int $y, int $M_TYPE, int $M_TYPE_LAYER)
243	{
244	return null;
245	}
246	}
247