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2026-08-20 11:41:17 +00:00
commit 6949695eac
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+<?php
+
+/**
+ * E041_layers_visibility.php
+ *
+ * @since       2017-05-08
+ * @category    Library
+ * @package     Pdf
+ * @author      Nicola Asuni <info@tecnick.com>
+ * @copyright   2002-2026 Nicola Asuni - Tecnick.com LTD
+ * @license     https://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE)
+ * @link        https://github.com/tecnickcom/tc-lib-pdf
+ *
+ * This file is part of tc-lib-pdf software library.
+ */
+
+// NOTE: local file reads (images, fonts, attachments) are restricted to an allowlist of
+// trusted paths that covers this package tree, so run the examples in place. To read assets
+// from other locations, list them in the 'allowedPaths' entry of the fileOptions constructor
+// parameter (see E047_remote_resources_security.php).
+
+// NOTE: run make fonts in the project root to generate the dependencies and example fonts.
+
+// autoloader when using Composer
+require __DIR__ . '/../vendor/autoload.php';
+
+\define('OUTPUT_FILE', \realpath(__DIR__ . '/../target') . '/example.pdf');
+
+// define fonts directory
+\define('K_PATH_FONTS', \realpath(__DIR__ . '/../vendor/tecnickcom/tc-lib-pdf-font/target/fonts'));
+
+// autoloader when using RPM or DEB package installation
+//require ('/usr/share/php/Com/Tecnick/Pdf/autoload.php');
+
+// main TCPDF object
+$pdf = new \Com\Tecnick\Pdf\Tcpdf(
+    unit: \Com\Tecnick\Pdf\Page\Unit::Millimeter,
+    isunicode: true,
+    subsetfont: false,
+    compress: true,
+    mode: \Com\Tecnick\Pdf\PdfConformance::None,
+    objEncrypt: null,
+);
+
+// ----------
+
+$pdf->setCreator('tc-lib-pdf');
+$pdf->setAuthor('Nicola Asuni');
+$pdf->setSubject('tc-lib-pdf example: 041');
+$pdf->setTitle('Layer Visibility (OCG)');
+$pdf->setKeywords('TCPDF tc-lib-pdf layers visibility OCG optional content groups');
+$pdf->setPDFFilename('041_layers_visibility.pdf');
+
+$pdf->setViewerPreferences(['DisplayDocTitle' => true]);
+
+$pdf->enableDefaultPageContent();
+
+// ----------
+// Insert fonts
+
+$bfont1 = $pdf->font->insert($pdf->pon, 'helvetica', '', 14);
+
+// test images directory
+$imgdir = \realpath(__DIR__ . '/../vendor/tecnickcom/tc-lib-pdf-image/test/images/');
+
+// ----------
+
+// Layers
+
+$page1 = $pdf->addPage();
+
+$pdf->page->addContent($pdf->getTextCell(
+    txt: 'Layers and Optional Content Groups',
+    posx: 15,
+    posy: 15,
+    width: 180,
+    height: 8,
+));
+
+$pdf->page->addContent($pdf->getTextCell(
+    txt: 'This page contains objects assigned to different visibility layers.',
+    posx: 15,
+    posy: 28,
+    width: 180,
+    height: 6,
+));
+
+$pdf->page->addContent($pdf->getTextCell('Always visible text', 15, 40, 120, 7, 0, 0, 'T', 'L', drawcell: true));
+
+$lyrScreen = $pdf->newLayer(name: 'screen_only', intent: ['view' => true], print: false, view: true, lock: false);
+$pdf->page->addContent($lyrScreen);
+$pdf->page->addContent($pdf->getTextCell('Screen-only layer content', 15, 54, 120, 7, 0, 0, 'T', 'L', drawcell: true));
+$pdf->page->addContent($pdf->closeLayer());
+
+$lyrPrint = $pdf->newLayer(name: 'print_only', intent: ['design' => true], print: true, view: false, lock: false);
+$pdf->page->addContent($lyrPrint);
+$pdf->page->addContent($pdf->getTextCell('Print-only layer content', 15, 66, 120, 7, 0, 0, 'T', 'L', drawcell: true));
+$pdf->page->addContent($pdf->closeLayer());
+
+$pdf->page->addContent($pdf->getTextCell(
+    txt: 'Viewer support for layer toggles varies by PDF reader.',
+    posx: 15,
+    posy: 82,
+    width: 180,
+    height: 6,
+));
+
+// =============================================================
+
+// ----------
+// get PDF document as raw string
+$rawpdf = $pdf->getOutPDFString();
+
+// ----------
+
+// Various output modes:
+
+//$pdf->savePDF(\dirname(__DIR__).'/target', $rawpdf);
+$pdf->renderPDF(rawpdf: $rawpdf);
+
+//$pdf->downloadPDF($rawpdf);
+//echo $pdf->getMIMEAttachmentPDF($rawpdf);