function theme_yr_verdata_wind in Yr Weatherdata 7

Same name and namespace in other branches

1. 6.2 yr_verdata.module \theme_yr_verdata_wind()

Function for generating a themed wind symbol for one forecast period.

Parameters

$vars: Array with two keys: dir: The windDirection property from the loaded xml object. Should have the attributes 'deg', 'code' and 'name'. speed: The windSpeed property from the loaded xml object. Should have the attributes 'mps' and 'name'.

Return value

Returns a themed image for the wind symbol.

3 theme calls to theme_yr_verdata_wind()

yr_verdata_generate in ./yr_verdata.module

Function for generating a forecast for a location. This function should only be called after having checked if there is an up-to-date cache available, as this will load and parse an xml-file, possibly getting it from a remote host first, which is…

yr_verdata_generate_forecastboxes in ./yr_verdata.module

Function for generating one or more forecast boxes for given periods.

yr_verdata_page_all in ./yr_verdata.module

Function for generating the main forecast page.

File

./yr_verdata.module, line 990

yr_verdata.module This file contains the code for getting the forecast from yr.no and displaying it on a Drupal site.

Code

function theme_yr_verdata_wind($vars) {

  // First, calculate different speed units.
  $kph = bcmul($vars['speed']['mps'], 3.6, 1);
  $mph = bcmul($vars['speed']['mps'], 2.24, 1);
  $knots = bcmul($vars['speed']['mps'], 1.94, 1);

  // Set up the return array.
  $wind = array(
    'speed' => array(
      'm/s' => check_plain($vars['speed']['mps']),
      'km/h' => $kph,
      'mph' => $mph,
      'knots' => $knots,
    ),
    'speedname' => check_plain($vars['speed']['name']),
    'deg' => check_plain($vars['dir']['deg']),
    'code' => check_plain($vars['dir']['code']),
    'dirname' => check_plain($vars['dir']['name']),
  );

  // Add the 'mps' notation for meters per second.
  $wind['speed']['mps'] = $wind['speed']['m/s'];

  // And then generate an image for this wind value. The image will be generated by yr.no's servers,
  // so we need to set up the parameters with the correct values.
  // First, we round the degrees to the nearest 5, and make sure it's a 3-digit number.
  $deg = $vars['dir']['deg'] - $vars['dir']['deg'] % 5;

  // Add leading zeroes as necessary.
  if (drupal_strlen($deg) == 2) {
    $deg = '0' . $deg;
  }
  elseif (drupal_strlen($deg) == 1) {
    $deg = '00' . $deg;
  }

  // 360 degrees doesn't work in the url, but 000 does.
  $deg = $deg == 360 ? '000' : $deg;

  // Then we set up the speed to supply in the URL. It's supplied to the nearest 2.5, but in the URL,
  // it's multiplied by 10.
  $speed = $vars['speed']['mps'] * 10;
  $speed = round($speed / 25) * 25;

  // Speed may also need leading zeroes, but as a 4-digit number.
  if (drupal_strlen($speed) == 3) {
    $speed = '0' . $speed;
  }
  elseif (drupal_strlen($speed) == 2) {
    $speed = '00' . $speed;
  }
  elseif (drupal_strlen($speed) == 1) {
    $speed = '000' . $speed;
  }

  // Create the <img>.
  $unit = variable_get('yr_verdata_windspeed_unit', 'm/s');
  $url = variable_get('yr_verdata_wind_url', 'http://fil.nrk.no/yr/grafikk/vindpiler/32/') . 'vindpil.' . $speed . '.' . $deg . '.png';
  $windtext = $wind['dirname'] . ', ' . $wind['speedname'] . ', ' . $wind['speed'][$unit] . ' ' . $unit;
  return theme('image', array(
    'path' => $url,
    'alt' => $windtext,
    'title' => $windtext,
  ));
}