HTML2PDFRenderer.php

<?php namespace App\Http\Renderers;
/**
 * Copyright 2023 OpenStack Foundation
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/

use TCPDF;
/**
 * Class HTML2PDFRenderer
 * @package App\Http\Renderers
 */
final class HTML2PDFRenderer implements IRenderer
{
    /**
     * @var string
     */
    private $html;

    /**
     * HTML2PDFRenderer constructor.
     * @param string $html
     */
    public function __construct(string $html)
    {
        $this->html = $html;
    }

    public function render(): string
    {
        // create new PDF document
        $pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);

        // set document information
        $pdf->SetCreator(PDF_CREATOR);
        $pdf->SetTitle('');

        // remove default header/footer
        $pdf->setPrintHeader(false);
        $pdf->setPrintFooter(false);

        // set header and footer fonts
        $pdf->setHeaderFont(Array(PDF_FONT_NAME_MAIN, '', PDF_FONT_SIZE_MAIN));
        $pdf->setFooterFont(Array(PDF_FONT_NAME_DATA, '', PDF_FONT_SIZE_DATA));

        // set default monospaced font
        $pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);

        // set margins
        $pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
        $pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
        $pdf->SetFooterMargin(PDF_MARGIN_FOOTER);

        // set auto page breaks
        $pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);

        // set image scale factor
        $pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);

        // set font
        $pdf->setFont('helvetica', '', 10);

        // add a page
        $pdf->AddPage();

        $pdf->writeHTML($this->html, true, false, true, false, '');

        //Close and output PDF document
        return $pdf->Output('', 'S');
    }
}