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<?php
/**
* Theme based generator for SVG gradient.
*
* @package PhpMyAdmin-theme
*/
declare(strict_types=1);
header('Content-Type: image/svg+xml');
header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 3600) . ' GMT');
/**
* Gets single color from GET parameters validating it.
*
* @param string $get_name Name of parameter in request
* @param string $default Default value
*
* @return string Color name or code.
*/
function PMA_gradientGetColor($get_name, $default)
{
// get color from GET args, only alphanumeric characters
$opts = ['options' => ['regexp' => '/^[a-z0-9]+$/i']];
$color = filter_input(INPUT_GET, $get_name, FILTER_VALIDATE_REGEXP, $opts);
if (preg_match('/^[a-f0-9]{6}$/', $color)) {
return '#' . $color;
}
return $color ? $color : $default;
}
$from = PMA_gradientGetColor('from', 'white');
$to = PMA_gradientGetColor('to', 'blank');
echo '<?xml version="1.0" ?>';
?>
<svg
xmlns="http://www.w3.org/2000/svg"
preserveAspectRatio="none"
version="1.0" width="100%" height="100%">
<defs>
<linearGradient id="linear-gradient" x1="0%" y1="0%" x2="0%" y2="100%">
<stop
offset="0%"
stop-color="<?php echo $from; ?>"
stop-opacity="1"
/>
<stop
offset="100%"
stop-color="<?php echo $to; ?>"
stop-opacity="1"
/>
</linearGradient>
</defs>
<rect width="100%" height="100%" style="fill:url(#linear-gradient);" />
</svg>
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