diff options
Diffstat (limited to 'vendor/chillerlan/php-qrcode/src/Output/QRImage.php')
| -rw-r--r-- | vendor/chillerlan/php-qrcode/src/Output/QRImage.php | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/vendor/chillerlan/php-qrcode/src/Output/QRImage.php b/vendor/chillerlan/php-qrcode/src/Output/QRImage.php new file mode 100644 index 000000000..598948c94 --- /dev/null +++ b/vendor/chillerlan/php-qrcode/src/Output/QRImage.php @@ -0,0 +1,208 @@ +<?php +/** + * Class QRImage + * + * @filesource QRImage.php + * @created 05.12.2015 + * @package chillerlan\QRCode\Output + * @author Smiley <[email protected]> + * @copyright 2015 Smiley + * @license MIT + * + * @noinspection PhpComposerExtensionStubsInspection + */ + +namespace chillerlan\QRCode\Output; + +use chillerlan\QRCode\Data\QRMatrix; +use chillerlan\QRCode\{QRCode, QRCodeException}; +use chillerlan\Settings\SettingsContainerInterface; +use Exception; + +use function array_values, base64_encode, call_user_func, count, imagecolorallocate, imagecolortransparent, + imagecreatetruecolor, imagedestroy, imagefilledrectangle, imagegif, imagejpeg, imagepng, in_array, + is_array, ob_end_clean, ob_get_contents, ob_start, range, sprintf; + +/** + * Converts the matrix into GD images, raw or base64 output + * requires ext-gd + * @link http://php.net/manual/book.image.php + */ +class QRImage extends QROutputAbstract{ + + protected const TRANSPARENCY_TYPES = [ + QRCode::OUTPUT_IMAGE_PNG, + QRCode::OUTPUT_IMAGE_GIF, + ]; + + /** + * @var string + */ + protected $defaultMode = QRCode::OUTPUT_IMAGE_PNG; + + /** + * @see imagecreatetruecolor() + * @var resource + */ + protected $image; + + /** + * @inheritDoc + * + * @throws \chillerlan\QRCode\QRCodeException + */ + public function __construct(SettingsContainerInterface $options, QRMatrix $matrix){ + + if(!extension_loaded('gd')){ + throw new QRCodeException('ext-gd not loaded'); // @codeCoverageIgnore + } + + parent::__construct($options, $matrix); + } + + /** + * @inheritDoc + */ + protected function setModuleValues():void{ + + foreach($this::DEFAULT_MODULE_VALUES as $M_TYPE => $defaultValue){ + $v = $this->options->moduleValues[$M_TYPE] ?? null; + + if(!is_array($v) || count($v) < 3){ + $this->moduleValues[$M_TYPE] = $defaultValue + ? [0, 0, 0] + : [255, 255, 255]; + } + else{ + $this->moduleValues[$M_TYPE] = array_values($v); + } + + } + + } + + /** + * @inheritDoc + * + * @return string|resource + */ + public function dump(string $file = null){ + $this->image = imagecreatetruecolor($this->length, $this->length); + + // avoid: Indirect modification of overloaded property $imageTransparencyBG has no effect + // https://stackoverflow.com/a/10455217 + $tbg = $this->options->imageTransparencyBG; + $background = imagecolorallocate($this->image, ...$tbg); + + if((bool)$this->options->imageTransparent && in_array($this->options->outputType, $this::TRANSPARENCY_TYPES, true)){ + imagecolortransparent($this->image, $background); + } + + imagefilledrectangle($this->image, 0, 0, $this->length, $this->length, $background); + + foreach($this->matrix->matrix() as $y => $row){ + foreach($row as $x => $M_TYPE){ + $this->setPixel($x, $y, $this->moduleValues[$M_TYPE]); + } + } + + if($this->options->returnResource){ + return $this->image; + } + + $imageData = $this->dumpImage($file); + + if($this->options->imageBase64){ + $imageData = sprintf('data:image/%s;base64,%s', $this->options->outputType, base64_encode($imageData)); + } + + return $imageData; + } + + /** + * @param int $x + * @param int $y + * @param array $rgb + * + * @return void + */ + protected function setPixel(int $x, int $y, array $rgb):void{ + imagefilledrectangle( + $this->image, + $x * $this->scale, + $y * $this->scale, + ($x + 1) * $this->scale, + ($y + 1) * $this->scale, + imagecolorallocate($this->image, ...$rgb) + ); + } + + /** + * @param string|null $file + * + * @return string + + * @throws \chillerlan\QRCode\Output\QRCodeOutputException + */ + protected function dumpImage(string $file = null):string{ + $file = $file ?? $this->options->cachefile; + + ob_start(); + + try{ + call_user_func([$this, $this->outputMode ?? $this->defaultMode]); + } + // not going to cover edge cases + // @codeCoverageIgnoreStart + catch(Exception $e){ + throw new QRCodeOutputException($e->getMessage()); + } + // @codeCoverageIgnoreEnd + + $imageData = ob_get_contents(); + imagedestroy($this->image); + + ob_end_clean(); + + if($file !== null){ + $this->saveToFile($imageData, $file); + } + + return $imageData; + } + + /** + * @return void + */ + protected function png():void{ + imagepng( + $this->image, + null, + in_array($this->options->pngCompression, range(-1, 9), true) + ? $this->options->pngCompression + : -1 + ); + } + + /** + * Jiff - like... JitHub! + * @return void + */ + protected function gif():void{ + imagegif($this->image); + } + + /** + * @return void + */ + protected function jpg():void{ + imagejpeg( + $this->image, + null, + in_array($this->options->jpegQuality, range(0, 100), true) + ? $this->options->jpegQuality + : 85 + ); + } + +} |