private static function SassExtentionsCompassFunctionsColourStops::normalize_stops in Sassy 7

1 call to SassExtentionsCompassFunctionsColourStops::normalize_stops()

SassExtentionsCompassFunctionsColourStops::grad_colour_stops in phamlp/sass/extensions/compass/functions/colourStops.php

File

phamlp/sass/extensions/compass/functions/colourStops.php, line 231

Class

SassExtentionsCompassFunctionsColourStops

Compass extension SassScript colour stops functions class. A collection of functions for use in SassSCript. @package PHamlP @subpackage Sass.extensions.compass.functions

Code

private static function normalize_stops($colourList) {
  $positions = $colourList->values;
  $s = sizeof($positions);

  # fill in the start and end positions, if unspecified
  if (empty($positions[0]->stop)) {
    $positions[0]->stop = new SassNumber(0);
  }
  if (empty($positions[$s - 1]->stop)) {
    $positions[$s - 1]->stop = new SassNumber('100%');
  }

  # fill in empty values
  for ($i = 0; $i < $s; $i++) {
    if (is_null($positions[$i]->stop)) {
      $num = 2;
      for ($j = $i + 1; $j < $s; $j++) {
        if (isset($positions[$j]->stop)) {
          $positions[$i]->stop = $positions[$i - 1]->stop
            ->op_plus($positions[$j]->stop
            ->op_minus($positions[$i - 1]->stop))
            ->op_div(new SassNumber($num));
          break;
        }
        else {
          $num += 1;
        }
      }
    }
  }

  # normalize unitless numbers
  foreach ($positions as &$pos) {
    if ($pos->stop
      ->isUnitless()) {
      $pos->stop = $pos->stop->value <= 1 ? $pos->stop
        ->op_times(new SassNumber('100%')) : $pos->stop
        ->op_times(new SassNumber('1px'));
    }
  }
  if ($positions[$s - 1]->stop
    ->op_eq(new SassNumber('0px'))
    ->toBoolean() || $positions[$s - 1]->stop
    ->op_eq(new SassNumber('0%'))
    ->toBoolean()) {
    throw new SassScriptFunctionException('Colour stops must be specified in increasing order', array(), SassScriptParser::$context->node);
  }
  return null;
}