Example E026 : text rendering modes

<?php

declare(strict_types=1);

/**
 * E026_text_rendering_modes.php
 *
 * @since       2026-04-26
 * @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 fonts directory
\define('K_PATH_FONTS', \realpath(__DIR__ . '/../vendor/tecnickcom/tc-lib-pdf-font/target/fonts'));

$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: 026');
$pdf->setTitle('Text rendering modes and clipping');
$pdf->setKeywords('TCPDF tc-lib-pdf example text rendering mode clipping stroke fill');
$pdf->setPDFFilename('026_text_rendering_modes.pdf');
$pdf->setViewerPreferences(['DisplayDocTitle' => true]);
$pdf->enableDefaultPageContent();

$setFont = static function (\Com\Tecnick\Pdf\Tcpdf $pdf, string $family, string $style, int $size): array {
    $font = $pdf->font->insert($pdf->pon, $family, $style, $size, 0.0, 1.0);
    $pdf->page->addContent($font['out']);
    return $font;
};

$drawTextModeLine = static function (
    \Com\Tecnick\Pdf\Tcpdf $pdf,
    string $text,
    float $y,
    float $strokeWidth,
    bool $fill,
    bool $stroke,
    bool $clip,
    int $imageId,
    float $pageHeight,
): void {
    if ($clip) {
        $pdf->page->addContent($pdf->graph->getStartTransform());
    }

    $pdf->page->addContent($pdf->getTextCell(
        $text,
        15.0,
        $y,
        180.0,
        0.0,
        strokewidth: $strokeWidth,
        fill: $fill,
        stroke: $stroke,
        clip: $clip,
        drawcell: false,
        valign: \Com\Tecnick\Pdf\TextVAlign::Top,
        halign: \Com\Tecnick\Pdf\TextHAlign::Left,
    ));

    if ($clip && $imageId > 0) {
        $pdf->page->addContent($pdf->image->getSetImage($imageId, 15.0, $y + 2.0, 170.0, 10.0, $pageHeight));
        $pdf->page->addContent($pdf->graph->getStopTransform());
    }
};

// Insert one neutral font before addPage() so page context has a valid current font.
$pdf->font->insert($pdf->pon, 'helvetica', '', 10, 0.0, 1.0);

$page = $pdf->addPage();

$setFont($pdf, 'helvetica', '', 11);
$pdf->page->addContent($pdf->getTextCell(
    'Text rendering modes: fill, stroke, fill+stroke, invisible, and clipping.',
    15.0,
    20.0,
    180.0,
    0.0,
    drawcell: false,
    valign: \Com\Tecnick\Pdf\TextVAlign::Top,
    halign: \Com\Tecnick\Pdf\TextHAlign::Left,
));

$setFont($pdf, 'helvetica', '', 22);

$pdf->page->addContent($pdf->color->getPdfColor('black', false));
$pdf->page->addContent($pdf->color->getPdfColor('rgb(255,0,0)', true));

$drawTextModeLine($pdf, 'Fill text', 35.0, 0.0, true, false, false, 0, $page['height']);
$drawTextModeLine($pdf, 'Stroke text', 47.0, 0.2, false, true, false, 0, $page['height']);
$drawTextModeLine($pdf, 'Fill, then stroke text', 59.0, 0.2, true, true, false, 0, $page['height']);
$drawTextModeLine($pdf, 'Neither fill nor stroke text (invisible)', 71.0, 0.0, false, false, false, 0, $page['height']);

$imagePath = __DIR__ . '/images/tcpdf_logo.jpg';
$imageId = 0;
if (\is_file($imagePath)) {
    $imageId = $pdf->image->add($imagePath);
}

$drawTextModeLine(
    $pdf,
    'Fill text and add to path for clipping',
    95.0,
    0.0,
    true,
    false,
    true,
    $imageId,
    $page['height'],
);
$drawTextModeLine(
    $pdf,
    'Stroke text and add to path for clipping',
    107.0,
    0.3,
    false,
    true,
    true,
    $imageId,
    $page['height'],
);
$drawTextModeLine(
    $pdf,
    'Fill, then stroke text and add to path for clipping',
    119.0,
    0.3,
    true,
    true,
    true,
    $imageId,
    $page['height'],
);
$drawTextModeLine($pdf, 'Add text to path for clipping', 131.0, 0.0, false, false, true, $imageId, $page['height']);

$rawpdf = $pdf->getOutPDFString();
$pdf->renderPDF(rawpdf: $rawpdf);