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<?php |
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/* |
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* This file is part of ocubom/twig-svg-extension |
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* |
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* © Oscar Cubo Medina <https://ocubom.github.io> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Ocubom\Twig\Extension\Svg\Processor; |
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class PreserveAspectRatioProcessor |
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{ |
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const ATTRIBUTE_NAME = 'preserveAspectRatio'; |
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const VALUES = [ |
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[ |
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'name' => 'align', |
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'default' => 'xMidYMid', |
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'values' => [ |
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'none' => 'none', |
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'xminymin' => 'xMinYMin', |
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'xmidymin' => 'xMidYMin', |
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'xmaxymin' => 'xMaxYMin', |
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'xminymid' => 'xMinYMid', |
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'xmidymid' => 'xMidYMid', // Default |
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'xmaxymid' => 'xMaxYMid', |
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'xminymax' => 'xMinYMax', |
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'xmidymax' => 'xMidYMax', |
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'xmaxymax' => 'xMaxYMax', |
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], |
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], [ |
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'name' => 'meet or slice', |
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'default' => 'meet', |
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'values' => [ |
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'meet' => 'meet', // Default |
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'slice' => 'slice', |
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], |
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], |
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]; |
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public function __invoke(\DOMElement $svg, array $options = []): \DOMElement |
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{ |
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$value = preg_split('@\s+@Uis', $svg->getAttribute(self::ATTRIBUTE_NAME)); |
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$value = array_slice($value, 0, count(self::VALUES)); |
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$count = count(self::VALUES); |
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foreach (array_reverse(self::VALUES, true) as $pos => $data) { |
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// Use default value if not set |
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$value[$pos] = $value[$pos] ?? $data['default']; |
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// Normalize value |
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$value[$pos] = $data['values'][mb_strtolower($value[$pos])] ?? $value[$pos]; |
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// Update default value count |
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if ($count === $pos + 1 && $value[$pos] === $data['default']) { |
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$count = $pos; |
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} |
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} |
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// Discard defaults at end |
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$value = array_slice($value, 0, $count); |
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// Set the normalized value or remove attribute if is empty or the defaults |
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if (count($value) > 0) { |
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$svg->setAttribute(self::ATTRIBUTE_NAME, implode(' ', $value)); |
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} else { |
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$svg->removeAttribute(self::ATTRIBUTE_NAME); |
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} |
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return $svg; |
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} |
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} |
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ocubom /
twig-svg-extension
