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SVGDocument.php in Forena Reports 7.5

SVGDocument Embedded SVG Graph as it's own document. @author davidmetzler

Namespace

Drupal\forena\DocumentFormats

File

src/DocumentFormats/SVGDocument.php
View source 
<?php

/**
 * @file SVGDocument
 * Embedded SVG Graph as it's own document.
 * @author davidmetzler
 *
 */
namespace Drupal\forena\DocumentFormats;

class SVGDocument extends DocumentTypeBase {
  public function __construct() {
    $this->content_type = 'image/svg+xml';
  }
  public function header($r, $print = TRUE) {
    $r->html = '';
    if ($print && $this->content_type) {
      header('Content-Type: ' . $this->content_type);
    }
  }
  public function render($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;
  }

  /**
   * Output SVG content type headers.
   */
  public function output(&$output) {
    if ($this->content_type) {
      print $output;
      return TRUE;
    }
    else {
      return FALSE;
    }
  }

}

Classes

Namesort descending Description
SVGDocument