AbstractWriter.php
3 years ago
BinaryWriter.php
3 years ago
DebugWriter.php
3 years ago
EpsWriter.php
3 years ago
FpdfWriter.php
3 years ago
PngWriter.php
3 years ago
SvgWriter.php
3 years ago
WriterInterface.php
3 years ago
PngWriter.php
226 lines
| 1 | <?php |
| 2 | |
| 3 | declare (strict_types=1); |
| 4 | /* |
| 5 | * (c) Jeroen van den Enden <info@endroid.nl> |
| 6 | * |
| 7 | * This source file is subject to the MIT license that is bundled |
| 8 | * with this source code in the file LICENSE. |
| 9 | */ |
| 10 | namespace WP2FA_Vendor\Endroid\QrCode\Writer; |
| 11 | |
| 12 | use WP2FA_Vendor\Endroid\QrCode\Exception\GenerateImageException; |
| 13 | use WP2FA_Vendor\Endroid\QrCode\Exception\MissingFunctionException; |
| 14 | use WP2FA_Vendor\Endroid\QrCode\Exception\MissingLogoHeightException; |
| 15 | use WP2FA_Vendor\Endroid\QrCode\Exception\ValidationException; |
| 16 | use WP2FA_Vendor\Endroid\QrCode\LabelAlignment; |
| 17 | use WP2FA_Vendor\Endroid\QrCode\QrCodeInterface; |
| 18 | use WP2FA_Vendor\Zxing\QrReader; |
| 19 | class PngWriter extends AbstractWriter |
| 20 | { |
| 21 | public function writeString(QrCodeInterface $qrCode) : string |
| 22 | { |
| 23 | if (!\extension_loaded('gd')) { |
| 24 | throw new GenerateImageException('Unable to generate image: check your GD installation'); |
| 25 | } |
| 26 | $image = $this->createImage($qrCode->getData(), $qrCode); |
| 27 | $logoPath = $qrCode->getLogoPath(); |
| 28 | if (null !== $logoPath) { |
| 29 | $image = $this->addLogo($image, $logoPath, $qrCode->getLogoWidth(), $qrCode->getLogoHeight()); |
| 30 | } |
| 31 | $label = $qrCode->getLabel(); |
| 32 | if (null !== $label) { |
| 33 | $image = $this->addLabel($image, $label, $qrCode->getLabelFontPath(), $qrCode->getLabelFontSize(), $qrCode->getLabelAlignment(), $qrCode->getLabelMargin(), $qrCode->getForegroundColor(), $qrCode->getBackgroundColor()); |
| 34 | } |
| 35 | $string = $this->imageToString($image); |
| 36 | if (\PHP_VERSION_ID < 80000) { |
| 37 | \imagedestroy($image); |
| 38 | } |
| 39 | if ($qrCode->getValidateResult()) { |
| 40 | $reader = new QrReader($string, QrReader::SOURCE_TYPE_BLOB); |
| 41 | if ($reader->text() !== $qrCode->getText()) { |
| 42 | throw new ValidationException('Built-in validation reader read "' . $reader->text() . '" instead of "' . $qrCode->getText() . '". |
| 43 | Adjust your parameters to increase readability or disable built-in validation.'); |
| 44 | } |
| 45 | } |
| 46 | return $string; |
| 47 | } |
| 48 | /** |
| 49 | * @param array<mixed> $data |
| 50 | * |
| 51 | * @return mixed |
| 52 | */ |
| 53 | private function createImage(array $data, QrCodeInterface $qrCode) |
| 54 | { |
| 55 | $baseSize = $qrCode->getRoundBlockSize() ? $data['block_size'] : 25; |
| 56 | $baseImage = $this->createBaseImage($baseSize, $data, $qrCode); |
| 57 | $interpolatedImage = $this->createInterpolatedImage($baseImage, $data, $qrCode); |
| 58 | if (\PHP_VERSION_ID < 80000) { |
| 59 | \imagedestroy($baseImage); |
| 60 | } |
| 61 | return $interpolatedImage; |
| 62 | } |
| 63 | /** |
| 64 | * @param array<mixed> $data |
| 65 | * |
| 66 | * @return mixed |
| 67 | */ |
| 68 | private function createBaseImage(int $baseSize, array $data, QrCodeInterface $qrCode) |
| 69 | { |
| 70 | $image = \imagecreatetruecolor($data['block_count'] * $baseSize, $data['block_count'] * $baseSize); |
| 71 | if (!$image) { |
| 72 | throw new GenerateImageException('Unable to generate image: check your GD installation'); |
| 73 | } |
| 74 | $foregroundColor = \imagecolorallocatealpha($image, $qrCode->getForegroundColor()['r'], $qrCode->getForegroundColor()['g'], $qrCode->getForegroundColor()['b'], $qrCode->getForegroundColor()['a']); |
| 75 | if (!\is_int($foregroundColor)) { |
| 76 | throw new GenerateImageException('Foreground color could not be allocated'); |
| 77 | } |
| 78 | $backgroundColor = \imagecolorallocatealpha($image, $qrCode->getBackgroundColor()['r'], $qrCode->getBackgroundColor()['g'], $qrCode->getBackgroundColor()['b'], $qrCode->getBackgroundColor()['a']); |
| 79 | if (!\is_int($backgroundColor)) { |
| 80 | throw new GenerateImageException('Background color could not be allocated'); |
| 81 | } |
| 82 | \imagefill($image, 0, 0, $backgroundColor); |
| 83 | foreach ($data['matrix'] as $row => $values) { |
| 84 | foreach ($values as $column => $value) { |
| 85 | if (1 === $value) { |
| 86 | \imagefilledrectangle($image, $column * $baseSize, $row * $baseSize, \intval(($column + 1) * $baseSize), \intval(($row + 1) * $baseSize), $foregroundColor); |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | return $image; |
| 91 | } |
| 92 | /** |
| 93 | * @param mixed $baseImage |
| 94 | * @param array<mixed> $data |
| 95 | * |
| 96 | * @return mixed |
| 97 | */ |
| 98 | private function createInterpolatedImage($baseImage, array $data, QrCodeInterface $qrCode) |
| 99 | { |
| 100 | $image = \imagecreatetruecolor($data['outer_width'], $data['outer_height']); |
| 101 | if (!$image) { |
| 102 | throw new GenerateImageException('Unable to generate image: check your GD installation'); |
| 103 | } |
| 104 | $backgroundColor = \imagecolorallocatealpha($image, $qrCode->getBackgroundColor()['r'], $qrCode->getBackgroundColor()['g'], $qrCode->getBackgroundColor()['b'], $qrCode->getBackgroundColor()['a']); |
| 105 | if (!\is_int($backgroundColor)) { |
| 106 | throw new GenerateImageException('Background color could not be allocated'); |
| 107 | } |
| 108 | \imagefill($image, 0, 0, $backgroundColor); |
| 109 | \imagecopyresampled($image, $baseImage, (int) $data['margin_left'], (int) $data['margin_left'], 0, 0, (int) $data['inner_width'], (int) $data['inner_height'], \imagesx($baseImage), \imagesy($baseImage)); |
| 110 | if ($qrCode->getBackgroundColor()['a'] > 0) { |
| 111 | \imagesavealpha($image, \true); |
| 112 | } |
| 113 | return $image; |
| 114 | } |
| 115 | /** |
| 116 | * @param mixed $sourceImage |
| 117 | * |
| 118 | * @return mixed |
| 119 | */ |
| 120 | private function addLogo($sourceImage, string $logoPath, int $logoWidth = null, int $logoHeight = null) |
| 121 | { |
| 122 | $mimeType = $this->getMimeType($logoPath); |
| 123 | $logoImage = \imagecreatefromstring(\strval(\file_get_contents($logoPath))); |
| 124 | if ('image/svg+xml' === $mimeType && (null === $logoHeight || null === $logoWidth)) { |
| 125 | throw new MissingLogoHeightException('SVG Logos require an explicit height set via setLogoSize($width, $height)'); |
| 126 | } |
| 127 | if (!$logoImage) { |
| 128 | throw new GenerateImageException('Unable to generate image: check your GD installation or logo path'); |
| 129 | } |
| 130 | $logoSourceWidth = \imagesx($logoImage); |
| 131 | $logoSourceHeight = \imagesy($logoImage); |
| 132 | if (null === $logoWidth) { |
| 133 | $logoWidth = $logoSourceWidth; |
| 134 | } |
| 135 | if (null === $logoHeight) { |
| 136 | $aspectRatio = $logoWidth / $logoSourceWidth; |
| 137 | $logoHeight = \intval($logoSourceHeight * $aspectRatio); |
| 138 | } |
| 139 | $logoX = \imagesx($sourceImage) / 2 - $logoWidth / 2; |
| 140 | $logoY = \imagesy($sourceImage) / 2 - $logoHeight / 2; |
| 141 | \imagecopyresampled($sourceImage, $logoImage, \intval($logoX), \intval($logoY), 0, 0, $logoWidth, $logoHeight, $logoSourceWidth, $logoSourceHeight); |
| 142 | if (\PHP_VERSION_ID < 80000) { |
| 143 | \imagedestroy($logoImage); |
| 144 | } |
| 145 | return $sourceImage; |
| 146 | } |
| 147 | /** |
| 148 | * @param mixed $sourceImage |
| 149 | * @param array<int> $labelMargin |
| 150 | * @param array<int> $foregroundColor |
| 151 | * @param array<int> $backgroundColor |
| 152 | * |
| 153 | * @return mixed |
| 154 | */ |
| 155 | private function addLabel($sourceImage, string $label, string $labelFontPath, int $labelFontSize, string $labelAlignment, array $labelMargin, array $foregroundColor, array $backgroundColor) |
| 156 | { |
| 157 | if (!\function_exists('imagettfbbox')) { |
| 158 | throw new MissingFunctionException('Missing function "imagettfbbox", please make sure you installed the FreeType library'); |
| 159 | } |
| 160 | $labelBox = \imagettfbbox($labelFontSize, 0, $labelFontPath, $label); |
| 161 | if (!$labelBox) { |
| 162 | throw new GenerateImageException('Unable to add label: check your GD installation'); |
| 163 | } |
| 164 | $labelBoxWidth = \intval($labelBox[2] - $labelBox[0]); |
| 165 | $labelBoxHeight = \intval($labelBox[0] - $labelBox[7]); |
| 166 | $sourceWidth = \imagesx($sourceImage); |
| 167 | $sourceHeight = \imagesy($sourceImage); |
| 168 | $targetWidth = $sourceWidth; |
| 169 | $targetHeight = $sourceHeight + $labelBoxHeight + $labelMargin['t'] + $labelMargin['b']; |
| 170 | // Create empty target image |
| 171 | $targetImage = \imagecreatetruecolor($targetWidth, $targetHeight); |
| 172 | if (!$targetImage) { |
| 173 | throw new GenerateImageException('Unable to generate image: check your GD installation'); |
| 174 | } |
| 175 | $foregroundColor = \imagecolorallocate($targetImage, $foregroundColor['r'], $foregroundColor['g'], $foregroundColor['b']); |
| 176 | if (!\is_int($foregroundColor)) { |
| 177 | throw new GenerateImageException('Foreground color could not be allocated'); |
| 178 | } |
| 179 | $backgroundColor = \imagecolorallocate($targetImage, $backgroundColor['r'], $backgroundColor['g'], $backgroundColor['b']); |
| 180 | if (!\is_int($backgroundColor)) { |
| 181 | throw new GenerateImageException('Background color could not be allocated'); |
| 182 | } |
| 183 | \imagefill($targetImage, 0, 0, $backgroundColor); |
| 184 | // Copy source image to target image |
| 185 | \imagecopyresampled($targetImage, $sourceImage, 0, 0, 0, 0, $sourceWidth, $sourceHeight, $sourceWidth, $sourceHeight); |
| 186 | if (\PHP_VERSION_ID < 80000) { |
| 187 | \imagedestroy($sourceImage); |
| 188 | } |
| 189 | switch ($labelAlignment) { |
| 190 | case LabelAlignment::LEFT: |
| 191 | $labelX = $labelMargin['l']; |
| 192 | break; |
| 193 | case LabelAlignment::RIGHT: |
| 194 | $labelX = $targetWidth - $labelBoxWidth - $labelMargin['r']; |
| 195 | break; |
| 196 | default: |
| 197 | $labelX = \intval($targetWidth / 2 - $labelBoxWidth / 2); |
| 198 | break; |
| 199 | } |
| 200 | $labelY = $targetHeight - $labelMargin['b']; |
| 201 | \imagettftext($targetImage, $labelFontSize, 0, $labelX, $labelY, $foregroundColor, $labelFontPath, $label); |
| 202 | return $targetImage; |
| 203 | } |
| 204 | /** |
| 205 | * @param mixed $image |
| 206 | */ |
| 207 | private function imageToString($image) : string |
| 208 | { |
| 209 | \ob_start(); |
| 210 | \imagepng($image); |
| 211 | return (string) \ob_get_clean(); |
| 212 | } |
| 213 | public static function getContentType() : string |
| 214 | { |
| 215 | return 'image/png'; |
| 216 | } |
| 217 | public static function getSupportedExtensions() : array |
| 218 | { |
| 219 | return ['png']; |
| 220 | } |
| 221 | public function getName() : string |
| 222 | { |
| 223 | return 'png'; |
| 224 | } |
| 225 | } |
| 226 |