public function Zooming::content in Flot 8

Zooming.

1 string reference to 'Zooming::content'

flot_examples.routing.yml in flot_examples/flot_examples.routing.yml

flot_examples/flot_examples.routing.yml

File

flot_examples/src/Controller/Zooming.php, line 15

Class

Zooming

Display a chart demonstrating zooming in and out.

Namespace

Drupal\flot_examples\Controller

Code

public function content() {

  // Basic line chart.
  $d = array();
  $x1 = 0;
  $x2 = 3 * pi();
  for ($i = 0; $i <= 100; $i++) {
    $x = $x1 + $i * ($x2 - $x1) / 100;
    $d[] = array(
      $x,
      sin($x * sin($x)),
    );
  }
  $data[] = array(
    'label' => 'sin(x*sin(x))',
    'data' => $d,
  );
  $options_p = [
    'legend' => [
      'show' => FALSE,
    ],
    'series' => [
      'lines' => [
        'show' => TRUE,
      ],
      'points' => [
        'show' => TRUE,
      ],
    ],
    'yaxis' => [
      'ticks' => 10,
    ],
    'selection' => [
      'mode' => 'xy',
    ],
  ];
  $options_o = [
    'legend' => [
      'show' => FALSE,
    ],
    'series' => [
      'lines' => [
        'show' => TRUE,
        'lineWidth' => 1,
      ],
      'shadowSize' => 0,
    ],
    'xaxis' => [
      'ticks' => 4,
    ],
    'yaxis' => [
      'ticks' => 3,
      'min' => -2,
      'max' => 2,
    ],
    'grid' => [
      'color' => "#999",
    ],
    'selection' => [
      'mode' => 'xy',
    ],
  ];
  $text = [];
  $text[] = $this
    ->t('Selection support makes it easy to construct flexible zooming schemes. With a few lines of code, the small overview plot to the right has been connected to the large plot. Try selecting a rectangle on either of them.');
  $output['placeholder'] = [
    '#type' => 'flot',
    '#data' => $data,
    '#options' => $options_p,
    '#theme' => 'flot_examples_zooming',
    '#text' => $text,
  ];

  // This next entry ensures the data is available to the javascript.
  // The JS script provided in the above twig template will handle the
  // rendering.
  // Alternatinvely, a new Element could be made and used which will accept
  // additional data and options parameters to render charts with a defined
  // overview/zoom relationship.
  $output['overview'] = [
    '#type' => 'flot',
    '#data' => $data,
    '#options' => $options_o,
    '#id' => 'overview',
    '#theme' => NULL,
  ];
  return $output;
}