public function Tracking::content in Flot 8

Zooming.

1 string reference to 'Tracking::content'

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

flot_examples/flot_examples.routing.yml

File

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

Class

Tracking

Demonstrate tracking values with the cursor.

Namespace

Drupal\flot_examples\Controller

Code

public function content() {
  $cos = [];
  $sin = [];
  for ($i = 0; $i < 14; $i += 0.1) {
    $sin[] = [
      $i,
      sin($i),
    ];
    $cos[] = [
      $i,
      cos($i),
    ];
  }
  $data = [
    [
      'data' => $sin,
      'label' => 'sin(x) = -0.00',
    ],
    [
      'data' => $cos,
      'label' => 'cos(x) = -0.00',
    ],
  ];
  $options = [
    'series' => [
      'lines' => [
        'show' => TRUE,
      ],
    ],
    'crosshair' => [
      'mode' => "x",
    ],
    'grid' => [
      'hoverable' => TRUE,
      'autoHighlight' => FALSE,
    ],
    'yaxis' => [
      'min' => -1.2,
      'max' => 1.2,
    ],
  ];
  $text = [];
  $text[] = $this
    ->t("You can add crosshairs that'll track the mouse position, either on both axes or as here on only one.");
  $text[] = $this
    ->t('If you combine it with listening on hover events, you can use it to track the intersection on the curves by interpolating the data points (look at the legend).');
  $text[] = [
    [
      '#markup' => '<p id="hoverdata"></p>',
    ],
  ];
  $output[] = [
    '#type' => 'flot',
    '#theme' => 'flot_examples',
    '#data' => $data,
    '#options' => $options,
    '#attached' => [
      'library' => [
        'flot_examples/tracking',
      ],
    ],
    '#text' => $text,
  ];
  return $output;
}