forked from miraty/libreqr
Generate QR code before outputting anything
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parent
d0f211f61e
commit
a706b97a1c
114
index.php
114
index.php
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@ -38,7 +38,7 @@ $params = array(
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"fgColor" => DEFAULT_FGCOLOR,
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);
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$validFormSubmitted = false;
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$qrCodeAvailable = NULL;
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if (
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isset($_POST['txt'])
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@ -49,6 +49,8 @@ if (
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AND isset($_POST['fgColor'])
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) {
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$qrCodeAvailable = true;
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if (strlen($_POST['txt']) >= 1 AND strlen($_POST['txt']) <= 4096) {
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$params['txt'] = $_POST['txt'];
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} else {
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@ -96,6 +98,48 @@ if (
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}
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$validFormSubmitted = true;
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$rgbBgColor = array(
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'r' => hexdec(substr($params['bgColor'],0,2)),
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'g' => hexdec(substr($params['bgColor'],2,2)),
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'b' => hexdec(substr($params['bgColor'],4,2)),
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);
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$qrCode = Builder::create()
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->data($params['txt']);
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if (!is_null($params['margin']))
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$qrCode->margin($params['margin']);
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if (!is_null($params['size']))
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$qrCode->size($params['size']);
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if ($params['redundancy'] === "high")
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$qrCode->errorCorrectionLevel(new ErrorCorrectionLevelHigh());
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else if ($params['redundancy'] === "quartile")
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$qrCode->errorCorrectionLevel(new ErrorCorrectionLevelQuartile());
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else if ($params['redundancy'] === "medium")
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$qrCode->errorCorrectionLevel(new ErrorCorrectionLevelMedium());
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else if ($params['redundancy'] === "low")
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$qrCode->errorCorrectionLevel(new ErrorCorrectionLevelLow());
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$qrCode
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->backgroundColor(new Color(
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$rgbBgColor['r'],
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$rgbBgColor['g'],
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$rgbBgColor['b']
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))
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->foregroundColor(new Color(
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hexdec(substr($params['fgColor'],0,2)),
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hexdec(substr($params['fgColor'],2,2)),
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hexdec(substr($params['fgColor'],4,2))
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));
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try {
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$result = $qrCode->build();
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} catch (Exception $ex) {
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http_response_code(500);
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$qrCodeAvailable = false;
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error_log("LibreQR encountered an error while generating a QR code: " . $ex);
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}
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}
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?>
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@ -205,64 +249,20 @@ foreach($themeDimensionsIcons as $dimFav) // Set all icons dimensions
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<?php
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if ($validFormSubmitted) {
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$rgbBgColor = array(
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'r' => hexdec(substr($params['bgColor'],0,2)),
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'g' => hexdec(substr($params['bgColor'],2,2)),
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'b' => hexdec(substr($params['bgColor'],4,2)),
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);
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$qrCode = Builder::create()
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->data($params['txt']);
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if (!is_null($params['margin']))
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$qrCode->margin($params['margin']);
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if (!is_null($params['size']))
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$qrCode->size($params['size']);
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if ($params['redundancy'] === "high")
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$qrCode->errorCorrectionLevel(new ErrorCorrectionLevelHigh());
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else if ($params['redundancy'] === "quartile")
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$qrCode->errorCorrectionLevel(new ErrorCorrectionLevelQuartile());
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else if ($params['redundancy'] === "medium")
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$qrCode->errorCorrectionLevel(new ErrorCorrectionLevelMedium());
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else if ($params['redundancy'] === "low")
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$qrCode->errorCorrectionLevel(new ErrorCorrectionLevelLow());
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$qrCode
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->backgroundColor(new Color(
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$rgbBgColor['r'],
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$rgbBgColor['g'],
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$rgbBgColor['b']
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))
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->foregroundColor(new Color(
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hexdec(substr($params['fgColor'],0,2)),
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hexdec(substr($params['fgColor'],2,2)),
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hexdec(substr($params['fgColor'],4,2))
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));
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try {
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$result = $qrCode->build();
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} catch (Exception $ex) {
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http_response_code(500);
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echo "<p><strong>" . $loc['error_generation'] . "</strong></p></body></html>";
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error_log("LibreQR encountered an error while generating a QR code: " . $ex);
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exit();
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}
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if ($qrCodeAvailable) {
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$dataUri = $result->getDataUri();
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$qrSize = $params['size'] + 2 * $params['margin'];
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?>
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<section id="output">
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<div class="centered" id="downloadQR">
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<a href="<?= $dataUri ?>" class="button" download="<?= htmlspecialchars($params['txt']); ?>.png"><?= $loc['button_download'] ?></a>
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</div>
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<section id="output">
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<div class="centered" id="downloadQR">
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<a href="<?= $dataUri ?>" class="button" download="<?= htmlspecialchars($params['txt']); ?>.png"><?= $loc['button_download'] ?></a>
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</div>
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<div class="centered" id="showOnlyQR">
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<a title="<?= $loc['title_showOnlyQR'] ?>" href="<?= $dataUri ?>"><img width="<?= $qrSize ?>" height="<?= $qrSize ?>" alt='<?= $loc['alt_QR_before'] ?><?= htmlspecialchars($params['txt']); ?><?= $loc['alt_QR_after'] ?>' id="qrCode"<?php
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<div class="centered" id="showOnlyQR">
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<a title="<?= $loc['title_showOnlyQR'] ?>" href="<?= $dataUri ?>"><img width="<?= $qrSize ?>" height="<?= $qrSize ?>" alt='<?= $loc['alt_QR_before'] ?><?= htmlspecialchars($params['txt']); ?><?= $loc['alt_QR_after'] ?>' id="qrCode"<?php
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// Compute the difference between the QR code and theme background colors
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$diffLight = abs($rgbBgColor['r']-hexdec(substr($colorScheme['bg-light'],-6,2))) + abs($rgbBgColor['g']-hexdec(substr($colorScheme['bg-light'],-4,2))) + abs($rgbBgColor['b']-hexdec(substr($colorScheme['bg-light'],-2,2)));
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@ -275,10 +275,14 @@ if ($validFormSubmitted) {
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if ($diffDark < $contrastThreshold)
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echo " class='needDarkContrast'";
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?> src="<?= $dataUri ?>"></a>
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</div>
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</section>
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</div>
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</section>
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<?php } ?>
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<?php
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} else if ($qrCodeAvailable === false) {
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echo " <p><strong>" . $loc['error_generation'] . "</strong></p></body></html>";
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}
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?>
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<footer>
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