Styled Text
In this demo we create the stamp appearance complete on our own by low-level access to the canvas of an XObject instance.
We style single text pieces by different font styles.
THIS DEMO IS OBSOLETE AND YOU CAN USE THE RICH-TEXT STAMP TO GET THE SAME RESULT AS DEMOED HERE.
PHP
<?php
// load and register the autoload function
require_once __DIR__ . '/../../../../../../bootstrap.php';
// create a writer
$writer = new \SetaPDF_Core_Writer_Http('styled.pdf', true);
// get a document instance
$document = \SetaPDF_Core_Document::loadByFilename(
$assetsDirectory . '/pdfs/lenstown/Laboratory-Report.pdf',
$writer
);
// The text for our stamp should "look" like:
// "This document is licensed to <b>test@example.com</b> and was created on <i>www.setasign.com</i>."
// We need to draw the text style-by-style.
// First we prepare font instances:
$font = new \SetaPDF_Core_Font_TrueType_Subset(
$document,
$assetsDirectory . '/fonts/DejaVu/ttf/DejaVuSans.ttf'
);
$fontB = new \SetaPDF_Core_Font_TrueType_Subset(
$document,
$assetsDirectory . '/fonts/DejaVu/ttf/DejaVuSans-Bold.ttf'
);
$fontI = new \SetaPDF_Core_Font_TrueType_Subset(
$document,
$assetsDirectory . '/fonts/DejaVu/ttf/DejaVuSans-Oblique.ttf'
);
$text[] = ['This document is licensed to ', $font];
$text[] = ['test@example.com', $fontB];
$text[] = [' and was created on ', $font];
$text[] = ['www.setasign.com', $fontI];
$text[] = ['.', $font];
$fontSize = 10;
$height = $fontSize * 1.2;
$width = 0;
// calculate total width
foreach ($text as $textItem) {
$width += ($textItem[1]->getGlyphsWidth($textItem[0], 'UTF-8') / 1000 * $fontSize);
}
// create a XObject
$xObject = \SetaPDF_Core_XObject_Form::create($document, [0, 0, $width, $height]);
// get the Canvas
$canvas = $xObject->getCanvas();
// start the text output
$canvasText = $canvas->text()
->begin()
->moveToNextLine(0, -$text[0][1]->getDescent() / 1000 * $fontSize);
foreach ($text as $textItem) {
/** @var \SetaPDF_Core_Font_FontInterface $font */
$font = $textItem[1];
$canvasText
->setFont($font, $fontSize)
->showText($font->getCharCodes($textItem[0], 'UTF-8'));
}
$canvasText->end();
// create the stamp object for the XObject
$xObjectStamp = new \SetaPDF_Stamper_Stamp_XObject($xObject);
// create a stamper instance
$stamper = new \SetaPDF_Stamper($document);
// pass the stamp instance
$stamper->addStamp($xObjectStamp, [
'position' => \SetaPDF_Stamper::POSITION_CENTER_TOP,
'translateY' => -5
]);
// stamp the document
$stamper->stamp();
// save and send it to the client
$document->save()->finish();