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<?php |
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/** |
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* This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony). |
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* |
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* Copyright (C) 2019 - 2020 Jan Böhmer (https://github.com/jbtronics) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as published |
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* by the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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namespace App\Services\LabelSystem; |
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use App\Entity\Contracts\NamedElementInterface; |
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use App\Entity\LabelSystem\LabelOptions; |
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use App\Entity\Parts\Part; |
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use App\Entity\Parts\PartLot; |
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use App\Entity\Parts\Storelocation; |
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use App\Services\ElementTypeNameGenerator; |
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use Dompdf\Dompdf; |
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use Twig\Environment; |
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final class LabelGenerator |
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{ |
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public const CLASS_SUPPORT_MAPPING = [ |
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'part' => Part::class, |
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'part_lot' => PartLot::class, |
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'storelocation' => Storelocation::class, |
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]; |
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public const MM_TO_POINTS_FACTOR = 2.83465; |
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private $labelHTMLGenerator; |
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public function __construct(LabelHTMLGenerator $labelHTMLGenerator) |
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{ |
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$this->labelHTMLGenerator = $labelHTMLGenerator; |
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} |
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/** |
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* @param LabelOptions $options |
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* @param object|object[] $elements An element or an array of elements for which labels should be generated |
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* @return string |
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*/ |
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public function generateLabel(LabelOptions $options, $elements): string |
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{ |
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if (!is_array($elements) && !is_object($elements)) { |
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throw new \InvalidArgumentException('$element must be an object or an array of objects!'); |
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} |
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if (!is_array($elements)) { |
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$elements = [$elements]; |
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} |
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foreach ($elements as $element) { |
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if (!$this->supports($options, $element)) { |
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throw new \InvalidArgumentException('The given options are not compatible with the given element!'); |
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} |
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} |
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$dompdf = new Dompdf(); |
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$dompdf->setPaper($this->mmToPointsArray($options->getWidth(), $options->getHeight())); |
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$dompdf->loadHtml($this->labelHTMLGenerator->getLabelHTML($options, $elements)); |
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$dompdf->render(); |
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return $dompdf->output(); |
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} |
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/** |
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* Check if the given LabelOptions can be used with $element. |
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* @param LabelOptions $options |
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* @param object $element |
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* @return bool |
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*/ |
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public function supports(LabelOptions $options, object $element) |
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{ |
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$supported_type = $options->getSupportedElement(); |
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if (!isset(static::CLASS_SUPPORT_MAPPING[$supported_type])) { |
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throw new \InvalidArgumentException('Supported type name of the Label options not known!'); |
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} |
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return is_a($element, static::CLASS_SUPPORT_MAPPING[$supported_type]); |
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} |
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/** |
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* Converts width and height given in mm to an size array, that can be used by DOMPDF for page size |
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* @param float $width The width of the paper |
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* @param float $height The height of the paper |
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* @return float[] |
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*/ |
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public function mmToPointsArray(float $width, float $height): array |
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{ |
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return [0.0, 0.0, $width * self::MM_TO_POINTS_FACTOR, $height * self::MM_TO_POINTS_FACTOR]; |
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} |
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} |
Part-DB /
Part-DB-symfony
