Skip to content

Support for labels in SvgWriter #473

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
+44 −0
Open

Support for labels in SvgWriter #473

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
44 changes: 44 additions & 0 deletions src/Writer/SvgWriter.php
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -67,6 +67,10 @@ public function write(QrCodeInterface $qrCode, ?LogoInterface $logo = null, ?Lab

$result = new SvgResult($matrix, $xml, boolval($options[self::WRITER_OPTION_EXCLUDE_XML_DECLARATION]));

if ($label instanceof LabelInterface) {
$this->addLabel($label, $result);
}

if ($logo instanceof LogoInterface) {
$this->addLogo($logo, $result, $options);
}
Expand Down Expand Up @@ -164,6 +168,46 @@ private function addLogo(LogoInterface $logo, SvgResult $result, array $options)
}
}

function setAttribute(\SimpleXMLElement $node, $attributeName, $attributeValue)
{
$attributes = $node->attributes();
if (isset($attributes->$attributeName)) {
$attributes->$attributeName = $attributeValue;
} else {
$attributes->addAttribute($attributeName, $attributeValue);
}
}

private function addLabel(LabelInterface $label, SvgResult $result): void
{
$xml = $result->getXml();

/** @var \SimpleXMLElement $xmlAttributes */
$xmlAttributes = $xml->attributes();
$viewBox = (string) $xmlAttributes->viewBox;
$viewBoxArray = explode(' ', $viewBox);

$this->setAttribute($xml, "viewBox", '0 0 '.$viewBoxArray[2].' '.$viewBoxArray[3] + 50);

$x = intval($xmlAttributes->width) / 2;
$y = intval($xmlAttributes->height) + 20;

// Get text and position of label
$labelText = $label->getText();
$fontSize = $label->getFont()->getSize();
$fontFamily = $label->getFont()->getSize();
$fontColor = $label->getTextColor();

// Create text element in SVG
$text = $xml->addChild('text', $labelText);
$text->addAttribute('x', (string)$x);
$text->addAttribute('y', (string)$y);
$text->addAttribute('font-size', (string)$fontSize);
$text->addAttribute('font-family', "Helvetica");
$text->addAttribute('text-anchor', 'middle'); // Center text horizontally
$text->addAttribute('fill', '#'.sprintf('%02x%02x%02x', $fontColor->getRed(), $fontColor->getGreen(), $fontColor->getBlue()));
}

private function formatNumber(float $number): string
{
$string = number_format($number, self::DECIMAL_PRECISION, '.', '');
Expand Down