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public function SVGDocument::render in Forena Reports 7.5

Overrides DocumentTypeBase::render

File

src/DocumentFormats/SVGDocument.php, line 23
SVGDocument Embedded SVG Graph as it's own document. @author davidmetzler

Class

SVGDocument

Namespace

Drupal\forena\DocumentFormats

Code

public function render($r, $format, $options = array()) {
  $output = '';
  $doc = new \DomDocument();
  $xml_body = '<html><body>' . $r->html . '</body></html>';
  $doc->formatOutput = FALSE;
  $doc->strictErrorChecking = FALSE;
  libxml_use_internal_errors(true);
  $doc
    ->loadXML($xml_body);
  libxml_clear_errors();
  $xml = simplexml_import_dom($doc);
  $xml
    ->registerXPathNamespace('__empty_ns', 'http://www.w3.org/2000/svg');
  if ($xml) {
    $svg = $xml
      ->xpath('//__empty_ns:svg');
  }
  if ($xml && !$svg) {
    $svg = $xml
      ->xpath('//svg');
  }
  if ($svg) {
    $output = $svg[0]
      ->asXML();
  }
  else {
    $output = '<svg/>';
  }

  // Add in namespaces
  if (!strpos($output, 'xmlns')) {
    $output = str_replace('<svg', '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"', $output);
  }
  return $output;
}