Different Font-Styles / Rich-Text Stamp / Stamp Types / SetaPDF-Stamper / Demos

PHP

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<?php

use setasign\SetaPDF2\Demos\FontLoader;
use setasign\SetaPDF2\Core\Document;
use setasign\SetaPDF2\Core\Writer\HttpWriter;
use setasign\SetaPDF2\Stamper\Stamp\RichTextStamp;
use setasign\SetaPDF2\Stamper\Stamper;

// load and register the autoload function
require_once __DIR__ . '/../../../../../../bootstrap.php';

// create a writer
$writer = new HttpWriter('styled.pdf', true);
// get a document instance
$document = Document::loadByFilename(
    $assetsDirectory . '/pdfs/lenstown/Laboratory-Report.pdf',
    $writer
);

/* Font styles are done by using different font programs for each style. To
 * benefit from font subsetting, we need to create a callback that will create
 * the right font instances for us. See FontLoader.php for details:
 */
require_once $classesDirectory . '/FontLoader.php';
$fontLoader = new FontLoader($assetsDirectory);

// now simply create a stamp instance
$stamp = new RichTextStamp($document, $fontLoader);
$stamp->setDefaultFontFamily('DejaVuSans');
$stamp->setDefaultFontSize(10);
// pass an HTML like text to format the output
$stamp->setText(<<<HTML
    This document is licensed to <b><u>test@example.com</u></b> and was created on <i>www.setasign.com</i>.
HTML
);

// create a stamper instance
$stamper = new Stamper($document);
// pass the stamp instance
$stamper->addStamp($stamp, [
    'position' => Stamper::POSITION_CENTER_TOP,
    'translateY' => -5
]);

// stamp the document
$stamper->stamp();

// save and send it to the client
$document->save()->finish();

PHP

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<?php

namespace setasign\SetaPDF2\Demos;

use setasign\SetaPDF2\Core\Document;
use setasign\SetaPDF2\Core\Font\Type0\Subset;

/**
 * This is a simple, straight forward font-loader implementation.
 * It should give you an idea of how to create your own.
 */
class FontLoader
{
    /**
     * @var Subset[]
     */
    protected $loadedFonts = [];

    /**
     * @var string
     */
    protected $assetsDirectory;

    /**
     * @param $assetsDirectory
     * @param $loadedFonts
     */
    public function __construct($assetsDirectory, &$loadedFonts = [])
    {
        $this->assetsDirectory = $assetsDirectory;
        $this->loadedFonts = &$loadedFonts;
    }

    /**
     * This is the method that is called when a font is requested.
     *
     * @param Document $document
     * @param string $fontFamily
     * @param string $fontStyle
     * @return Subset
     */
    public function __invoke(Document $document, string $fontFamily, string $fontStyle)
    {
        $cacheKey = $document->getInstanceIdent() . '_' . $fontFamily . '_' . $fontStyle;
        if (!array_key_exists($cacheKey, $this->loadedFonts)) {
            $dejavuFontPath = $this->assetsDirectory . '/fonts/DejaVu/ttf/DejaVuSans';
            if ($fontFamily === 'DejaVuSans' && $fontStyle === 'B') {
                $font = new Subset($document, $dejavuFontPath . '-Bold.ttf');
            } elseif ($fontFamily === 'DejaVuSans' && $fontStyle === 'I') {
                $font = new Subset($document, $dejavuFontPath . '-Oblique.ttf');
            } elseif ($fontFamily === 'DejaVuSans' && $fontStyle === 'BI') {
                $font = new Subset($document, $dejavuFontPath . '-BoldOblique.ttf');
            } else {
                $font = new Subset($document, $dejavuFontPath . '.ttf');
            }

            $this->loadedFonts[$cacheKey] = $font;
        }
        return $this->loadedFonts[$cacheKey];
    }
}