function svg_image_get_image_file_dimensions in Svg Image 1.x

Same name and namespace in other branches

1. 8 svg_image.module \svg_image_get_image_file_dimensions()
2. 2.x svg_image.module \svg_image_get_image_file_dimensions()

Provides image file dimensions.

Parameters

\Drupal\file\Entity\File $file: SVG file.

Return value

integer[] Dimensions array.

1 call to svg_image_get_image_file_dimensions()

SvgImageWidget::process in src/Plugin/Field/FieldWidget/SvgImageWidget.php

Form API callback: Processes a file_generic field element.

File

./svg_image.module, line 59

Contains main functions and hooks for svg_image module.

Code

function svg_image_get_image_file_dimensions(File $file) {
  $image = \Drupal::getContainer()
    ->get('image.factory')
    ->get($file
    ->getFileUri());
  $variables = [];
  if ($image
    ->isValid()) {
    $variables['width'] = $image
      ->getWidth();
    $variables['height'] = $image
      ->getHeight();
  }
  else {

    // Set default width and height values.
    $variables['width'] = $variables['height'] = 64;

    // We can find out only dimensions of the SVG files.
    if (svg_image_is_file_svg($file)) {

      // Parse SVG as XML.
      $fileContents = file_get_contents($file
        ->getFileUri());

      // In some cases file could be not available for the loading. It could be
      // deleted from the files folder physically, moved to other place or
      // permissions will not allow to read it. In this case we will just skip
      // dimensions discovering.
      if ($fileContents) {
        $svg = simplexml_load_string($fileContents);
        $neededVariables = [
          'width',
          'height',
        ];
        if ($svg) {
          foreach ($svg
            ->attributes() as $attribute => $value) {
            if (in_array($attribute, $neededVariables)) {
              $variables[$attribute] = (int) $value;
            }
          }
        }
      }
    }
  }
  return $variables;
}