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<?php |
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namespace LesserPhp\Library; |
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use LesserPhp\Color\Converter; |
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use LesserPhp\Compiler; |
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use LesserPhp\Exception\GeneralException; |
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/** |
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* lesserphp |
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* https://www.maswaba.de/lesserphp |
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* |
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* LESS CSS compiler, adapted from http://lesscss.org |
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* |
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* Copyright 2013, Leaf Corcoran <[email protected]> |
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* Copyright 2016, Marcus Schwarz <[email protected]> |
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* Licensed under MIT or GPLv3, see LICENSE |
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* @package LesserPhp |
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*/ |
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class Functions |
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{ |
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/** |
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* @var \LesserPhp\Library\Assertions |
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*/ |
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private $assertions; |
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/** |
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* @var \LesserPhp\Library\Coerce |
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*/ |
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private $coerce; |
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/** |
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* @var \LesserPhp\Compiler |
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*/ |
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private $compiler; |
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/** |
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* @var \LesserPhp\Color\Converter |
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*/ |
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private $converter; |
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public static $TRUE = ["keyword", "true"]; |
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public static $FALSE = ["keyword", "false"]; |
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public static $lengths = ["px", "m", "cm", "mm", "in", "pt", "pc"]; |
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public static $times = ["s", "ms"]; |
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public static $angles = ["rad", "deg", "grad", "turn"]; |
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public static $lengths_to_base = [1, 3779.52755906, 37.79527559, 3.77952756, 96, 1.33333333, 16]; |
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64 |
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/** |
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* Functions constructor. |
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* |
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* @param \LesserPhp\Library\Assertions $assertions |
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* @param \LesserPhp\Library\Coerce $coerce |
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* @param \LesserPhp\Compiler $compiler |
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* @param \LesserPhp\Color\Converter $converter |
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1 |
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*/ |
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public function __construct(Assertions $assertions, Coerce $coerce, Compiler $compiler, Converter $converter) |
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1 |
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{ |
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$this->assertions = $assertions; |
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$this->coerce = $coerce; |
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$this->compiler = $compiler; // temporary solution to get it working |
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$this->converter = $converter; |
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} |
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/** |
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* @param array $args |
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1 |
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* |
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* @return array |
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1 |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function pow(array $args) |
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1 |
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{ |
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list($base, $exp) = $this->assertions->assertArgs($args, 2, 'pow'); |
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1 |
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return [ |
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'number', |
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pow($this->assertions->assertNumber($base), $this->assertions->assertNumber($exp)), |
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$args[2][0][2], |
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]; |
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} |
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1 |
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/** |
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* @return float |
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*/ |
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public function pi() |
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1 |
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{ |
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return M_PI; |
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} |
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1 |
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/** |
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* @param array $args |
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* |
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* @return array |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function mod(array $args) |
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{ |
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list($a, $b) = $this->assertions->assertArgs($args, 2, 'mod'); |
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1 |
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return ['number', $this->assertions->assertNumber($a) % $this->assertions->assertNumber($b), $args[2][0][2]]; |
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} |
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/** |
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* @param array $color |
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* |
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1 |
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* @return int |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function red(array $color) |
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{ |
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$color = $this->coerce->coerceColor($color); |
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if ($color === null) { |
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throw new GeneralException('color expected for red()'); |
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} |
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2 |
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return $color[1]; |
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} |
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/** |
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* @param array $color |
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* |
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* @return int |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function green(array $color) |
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{ |
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$color = $this->coerce->coerceColor($color); |
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if ($color === null) { |
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throw new GeneralException('color expected for green()'); |
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} |
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return $color[2]; |
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} |
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/** |
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* @param array $color |
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* |
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* @return int |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function blue(array $color) |
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{ |
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$color = $this->coerce->coerceColor($color); |
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if ($color === null) { |
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throw new GeneralException('color expected for blue()'); |
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} |
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3 |
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return $color[3]; |
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} |
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/** |
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* @param array $args |
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* |
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* @return array |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function convert(array $args) |
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{ |
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list($value, $to) = $this->assertions->assertArgs($args, 2, 'convert'); |
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1 |
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// If it's a keyword, grab the string version instead |
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if (is_array($to) && $to[0] === 'keyword') { |
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$to = $to[1]; |
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} |
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1 |
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return $this->convertMe($value, $to); |
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} |
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/** |
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* @param array $num |
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* |
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* @return array |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function abs(array $num) |
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{ |
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return ['number', abs($this->assertions->assertNumber($num)), $num[2]]; |
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} |
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/** |
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* @param array $args |
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* |
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* @return int |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function min(array $args) |
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{ |
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$values = $this->assertions->assertMinArgs($args, 1, 'min'); |
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$firstFormat = $values[0][2]; |
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$minIndex = 0; |
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$minValue = $values[0][1]; |
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1 |
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foreach ($values as $a => $value) { |
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$converted = $this->convertMe($value, $firstFormat); |
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1 |
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if ($converted[1] < $minValue) { |
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$minIndex = $a; |
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$minValue = $value[1]; |
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} |
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} |
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return $values[$minIndex]; |
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} |
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/** |
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* @param array $args |
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* |
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* @return int |
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* @throws \LesserPhp\Exception\GeneralException |
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1 |
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*/ |
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public function max(array $args) |
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{ |
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$values = $this->assertions->assertMinArgs($args, 1, 'max'); |
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$firstFormat = $values[0][2]; |
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1 |
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$maxIndex = 0; |
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$maxValue = $values[0][1]; |
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2 |
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foreach ($values as $a => $value) { |
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$converted = $this->convertMe($value, $firstFormat); |
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if ($converted[1] > $maxValue) { |
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$maxIndex = $a; |
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$maxValue = $value[1]; |
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} |
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} |
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return $values[$maxIndex]; |
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} |
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3 |
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/** |
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* @param $num |
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1 |
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* |
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* @return float |
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1 |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function tan($num) |
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2 |
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{ |
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return tan($this->assertions->assertNumber($num)); |
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2 |
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} |
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/** |
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1 |
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* @param $num |
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* |
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1 |
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* @return float |
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* @throws \LesserPhp\Exception\GeneralException |
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*/ |
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public function sin($num) |
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{ |
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return sin($this->assertions->assertNumber($num)); |
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} |
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/** |
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* @param $num |
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* |
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* @return float |
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* @throws \LesserPhp\Exception\GeneralException |
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1 |
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*/ |
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public function cos($num) |
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1 |
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{ |
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1 |
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return cos($this->assertions->assertNumber($num)); |
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} |
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/** |
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1 |
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* @param $num |
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1 |
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* |
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1 |
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* @return array |
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1 |
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* @throws \LesserPhp\Exception\GeneralException |
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1 |
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*/ |
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1 |
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public function atan($num) |
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{ |
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$num = atan($this->assertions->assertNumber($num)); |
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1 |
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return ['number', $num, 'rad']; |
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} |
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1 |
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282
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/** |
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* @param $num |
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* |
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285
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* @return array |
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* @throws \LesserPhp\Exception\GeneralException |
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287
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*/ |
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public function asin($num) |
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{ |
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$num = asin($this->assertions->assertNumber($num)); |
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1 |
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292
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return ['number', $num, 'rad']; |
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1 |
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} |
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1 |
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/** |
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1 |
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* @param $num |
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297
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* |
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1 |
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* @return array |
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* @throws \LesserPhp\Exception\GeneralException |
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300
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1 |
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*/ |
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301
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1 |
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public function acos($num) |
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302
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1 |
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{ |
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303
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1 |
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$num = acos($this->assertions->assertNumber($num)); |
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1 |
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return ['number', $num, 'rad']; |
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} |
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308
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1 |
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/** |
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309
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* @param $num |
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310
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1 |
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* |
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311
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* @return float |
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312
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* @throws \LesserPhp\Exception\GeneralException |
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313
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*/ |
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314
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public function sqrt($num) |
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315
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1 |
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{ |
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316
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return sqrt($this->assertions->assertNumber($num)); |
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317
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} |
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318
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319
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13 |
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/** |
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320
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* @param $value |
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321
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13 |
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* |
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322
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13 |
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* @return mixed |
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323
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2 |
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* @throws \LesserPhp\Exception\GeneralException |
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324
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2 |
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*/ |
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325
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1 |
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public function extract($value) |
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326
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{ |
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327
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1 |
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list($list, $idx) = $this->assertions->assertArgs($value, 2, 'extract'); |
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328
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12 |
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$idx = $this->assertions->assertNumber($idx); |
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329
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12 |
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// 1 indexed |
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330
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if ($list[0] === 'list' && isset($list[2][$idx - 1])) { |
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331
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12 |
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return $list[2][$idx - 1]; |
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332
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6 |
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} |
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333
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3 |
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334
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return null; |
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335
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4 |
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} |
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336
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337
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/** |
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338
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* @param $value |
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339
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1 |
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* |
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340
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* @return array |
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341
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1 |
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*/ |
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342
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public function isnumber($value) |
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343
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{ |
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344
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1 |
|
return $this->toBool($value[0] === 'number'); |
|
345
|
1 |
|
} |
|
346
|
1 |
|
|
|
347
|
|
|
/** |
|
348
|
1 |
|
* @param $value |
|
349
|
1 |
|
* |
|
350
|
1 |
|
* @return array |
|
351
|
1 |
|
*/ |
|
352
|
1 |
|
public function isstring($value) |
|
353
|
|
|
{ |
|
354
|
|
|
return $this->toBool($value[0] === 'string'); |
|
355
|
1 |
|
} |
|
356
|
1 |
|
|
|
357
|
|
|
/** |
|
358
|
|
|
* @param $value |
|
359
|
|
|
* |
|
360
|
1 |
|
* @return array |
|
361
|
1 |
|
*/ |
|
362
|
1 |
|
public function iscolor($value) |
|
363
|
1 |
|
{ |
|
364
|
|
|
$yesno = $this->coerce->coerceColor($value) !== null; |
|
365
|
|
|
return $this->toBool($yesno); |
|
366
|
1 |
|
} |
|
367
|
|
|
|
|
368
|
|
|
/** |
|
369
|
|
|
* @param $value |
|
370
|
|
|
* |
|
371
|
1 |
|
* @return array |
|
372
|
|
|
*/ |
|
373
|
1 |
|
public function iskeyword($value) |
|
374
|
|
|
{ |
|
375
|
|
|
return $this->toBool($value[0] === 'keyword'); |
|
376
|
1 |
|
} |
|
377
|
|
|
|
|
378
|
1 |
|
/** |
|
379
|
|
|
* @param $value |
|
380
|
1 |
|
* |
|
381
|
|
|
* @return array |
|
382
|
|
|
*/ |
|
383
|
1 |
|
public function ispixel($value) |
|
384
|
|
|
{ |
|
385
|
1 |
|
return $this->toBool($value[0] === 'number' && $value[2] === 'px'); |
|
386
|
|
|
} |
|
387
|
1 |
|
|
|
388
|
|
|
/** |
|
389
|
|
|
* @param $value |
|
390
|
1 |
|
* |
|
391
|
|
|
* @return array |
|
392
|
1 |
|
*/ |
|
393
|
1 |
|
public function ispercentage($value) |
|
394
|
|
|
{ |
|
395
|
1 |
|
return $this->toBool($value[0] === 'number' && $value[2] === '%'); |
|
396
|
|
|
} |
|
397
|
|
|
|
|
398
|
|
|
/** |
|
399
|
|
|
* @param $value |
|
400
|
|
|
* |
|
401
|
|
|
* @return array |
|
402
|
|
|
*/ |
|
403
|
|
|
public function isem($value) |
|
404
|
1 |
|
{ |
|
405
|
|
|
return $this->toBool($value[0] === 'number' && $value[2] === 'em'); |
|
406
|
1 |
|
} |
|
407
|
1 |
|
|
|
408
|
|
|
/** |
|
409
|
|
|
* @param $value |
|
410
|
1 |
|
* |
|
411
|
1 |
|
* @return array |
|
412
|
1 |
|
*/ |
|
413
|
|
|
public function isrem($value) |
|
414
|
|
|
{ |
|
415
|
1 |
|
return $this->toBool($value[0] === 'number' && $value[2] === 'rem'); |
|
416
|
|
|
} |
|
417
|
|
|
|
|
418
|
|
|
/** |
|
419
|
|
|
* @param $color |
|
420
|
1 |
|
* |
|
421
|
|
|
* @return string |
|
422
|
1 |
|
* @throws \LesserPhp\Exception\GeneralException |
|
423
|
|
|
*/ |
|
424
|
1 |
|
public function rgbahex($color) |
|
425
|
1 |
|
{ |
|
426
|
|
|
$color = $this->coerce->coerceColor($color); |
|
427
|
1 |
|
if ($color === null) { |
|
428
|
|
|
throw new GeneralException('color expected for rgbahex'); |
|
429
|
|
|
} |
|
430
|
2 |
|
|
|
431
|
|
|
return sprintf( |
|
432
|
2 |
|
'#%02x%02x%02x%02x', |
|
433
|
|
|
isset($color[4]) ? $color[4] * 255 : 255, |
|
434
|
2 |
|
$color[1], |
|
435
|
2 |
|
$color[2], |
|
436
|
|
|
$color[3] |
|
437
|
2 |
|
); |
|
438
|
|
|
} |
|
439
|
|
|
|
|
440
|
1 |
|
/** |
|
441
|
|
|
* @param $color |
|
442
|
1 |
|
* |
|
443
|
|
|
* @return string |
|
444
|
1 |
|
* @throws \LesserPhp\Exception\GeneralException |
|
445
|
1 |
|
*/ |
|
446
|
|
|
public function argb($color) |
|
447
|
1 |
|
{ |
|
448
|
|
|
return $this->rgbahex($color); |
|
449
|
|
|
} |
|
450
|
1 |
|
|
|
451
|
|
|
/** |
|
452
|
1 |
|
* Given an url, decide whether to output a regular link or the base64-encoded contents of the file |
|
453
|
|
|
* |
|
454
|
1 |
|
* @param array $value either an argument list (two strings) or a single string |
|
455
|
1 |
|
* |
|
456
|
|
|
* @return string formatted url(), either as a link or base64-encoded |
|
457
|
1 |
|
*/ |
|
458
|
|
|
public function data_uri($value) |
|
459
|
|
|
{ |
|
460
|
1 |
|
$mime = ($value[0] === 'list') ? $value[2][0][2] : null; |
|
461
|
|
|
$url = ($value[0] === 'list') ? $value[2][1][2][0] : $value[2][0]; |
|
462
|
1 |
|
|
|
463
|
|
|
$fullpath = $this->findImport($url); |
|
464
|
1 |
|
|
|
465
|
|
|
if ($fullpath && ($fsize = filesize($fullpath)) !== false) { |
|
|
|
|
|
|
466
|
1 |
|
// IE8 can't handle data uris larger than 32KB |
|
467
|
1 |
|
if ($fsize / 1024 < 32) { |
|
468
|
1 |
|
if ($mime === null) { |
|
469
|
|
|
$finfo = new \finfo(FILEINFO_MIME); |
|
470
|
|
|
$mime = explode('; ', $finfo->file($fullpath)); |
|
471
|
1 |
|
$mime = $mime[0]; |
|
472
|
|
|
} |
|
473
|
|
|
|
|
474
|
1 |
|
//todo find out why this suddenly breakes data-uri-test |
|
475
|
|
|
if ($mime !== null && $mime !== 'text/x-php') { |
|
476
|
1 |
|
// fallback if the mime type is still unknown |
|
477
|
1 |
|
$url = sprintf('data:%s;base64,%s', $mime, base64_encode(file_get_contents($fullpath))); |
|
478
|
|
|
} |
|
479
|
1 |
|
} |
|
480
|
|
|
} |
|
481
|
|
|
|
|
482
|
1 |
|
return 'url("' . $url . '")'; |
|
483
|
|
|
} |
|
484
|
1 |
|
|
|
485
|
1 |
|
// utility func to unquote a string |
|
486
|
|
|
|
|
487
|
1 |
|
/** |
|
488
|
|
|
* @param array $arg |
|
489
|
|
|
* |
|
490
|
1 |
|
* @return array |
|
491
|
|
|
* @throws \LesserPhp\Exception\GeneralException |
|
492
|
1 |
|
*/ |
|
493
|
|
|
public function e(array $arg) |
|
494
|
1 |
|
{ |
|
495
|
|
|
switch ($arg[0]) { |
|
496
|
|
|
case 'list': |
|
497
|
1 |
|
$items = $arg[2]; |
|
498
|
|
|
if (isset($items[0])) { |
|
499
|
1 |
|
return $this->e($items[0]); |
|
500
|
|
|
} |
|
501
|
1 |
|
throw new GeneralException('unrecognised input'); |
|
502
|
|
|
case 'string': |
|
503
|
|
|
$arg[1] = ''; |
|
504
|
|
|
|
|
505
|
|
|
return $arg; |
|
506
|
|
|
case 'keyword': |
|
507
|
|
|
return $arg; |
|
508
|
|
|
default: |
|
509
|
1 |
|
return ['keyword', $this->compiler->compileValue($arg)]; |
|
510
|
|
|
} |
|
511
|
1 |
|
} |
|
512
|
|
|
|
|
513
|
1 |
|
/** |
|
514
|
|
|
* @param array $args |
|
515
|
|
|
* |
|
516
|
|
|
* @return array |
|
517
|
|
|
* @throws \LesserPhp\Exception\GeneralException |
|
518
|
|
|
*/ |
|
519
|
|
|
public function _sprintf(array $args) |
|
520
|
|
|
{ |
|
521
|
|
|
if ($args[0] !== 'list') { |
|
522
|
|
|
return $args; |
|
523
|
|
|
} |
|
524
|
2 |
|
$values = $args[2]; |
|
525
|
|
|
$string = array_shift($values); |
|
526
|
2 |
|
$template = $this->compiler->compileValue($this->e($string)); |
|
527
|
2 |
|
|
|
528
|
1 |
|
$i = 0; |
|
529
|
|
|
if (preg_match_all('/%[dsa]/', $template, $m)) { |
|
530
|
|
|
foreach ($m[0] as $match) { |
|
531
|
1 |
|
$val = isset($values[$i]) ? |
|
532
|
|
|
$this->compiler->reduce($values[$i]) : ['keyword', '']; |
|
533
|
|
|
|
|
534
|
|
|
// lessjs compat, renders fully expanded color, not raw color |
|
535
|
1 |
|
$color = $this->coerce->coerceColor($val); |
|
536
|
|
|
if ($color !== null) { |
|
537
|
1 |
|
$val = $color; |
|
538
|
1 |
|
} |
|
539
|
|
|
|
|
540
|
1 |
|
$i++; |
|
541
|
|
|
$rep = $this->compiler->compileValue($this->e($val)); |
|
542
|
|
|
$template = preg_replace( |
|
543
|
1 |
|
'/' . Compiler::pregQuote($match) . '/', |
|
544
|
|
|
$rep, |
|
545
|
1 |
|
$template, |
|
546
|
|
|
1 |
|
547
|
1 |
|
); |
|
548
|
|
|
} |
|
549
|
|
|
} |
|
550
|
|
|
|
|
551
|
|
|
$d = $string[0] === 'string' ? $string[1] : '"'; |
|
552
|
|
|
|
|
553
|
1 |
|
return ['string', $d, [$template]]; |
|
554
|
|
|
} |
|
555
|
1 |
|
|
|
556
|
|
|
/** |
|
557
|
|
|
* @param array $arg |
|
558
|
|
|
* |
|
559
|
1 |
|
* @return array |
|
560
|
1 |
|
* @throws \LesserPhp\Exception\GeneralException |
|
561
|
1 |
|
*/ |
|
562
|
|
|
public function floor(array $arg) |
|
563
|
1 |
|
{ |
|
564
|
1 |
|
$value = $this->assertions->assertNumber($arg); |
|
565
|
|
|
|
|
566
|
1 |
|
return ['number', floor($value), $arg[2]]; |
|
567
|
1 |
|
} |
|
568
|
|
|
|
|
569
|
1 |
|
/** |
|
570
|
|
|
* @param array $arg |
|
571
|
|
|
* |
|
572
|
1 |
|
* @return array |
|
573
|
1 |
|
* @throws \LesserPhp\Exception\GeneralException |
|
574
|
|
|
*/ |
|
575
|
1 |
|
public function ceil(array $arg) |
|
576
|
1 |
|
{ |
|
577
|
|
|
$value = $this->assertions->assertNumber($arg); |
|
578
|
|
|
|
|
579
|
1 |
|
return ['number', ceil($value), $arg[2]]; |
|
580
|
1 |
|
} |
|
581
|
1 |
|
|
|
582
|
1 |
|
/** |
|
583
|
|
|
* @param array $arg |
|
584
|
|
|
* |
|
585
|
1 |
|
* @return array |
|
586
|
1 |
|
* @throws \LesserPhp\Exception\GeneralException |
|
587
|
|
|
*/ |
|
588
|
|
|
public function round(array $arg) |
|
589
|
1 |
|
{ |
|
590
|
|
|
if ($arg[0] !== 'list') { |
|
591
|
|
|
$value = $this->assertions->assertNumber($arg); |
|
592
|
1 |
|
|
|
593
|
|
|
return ['number', round($value), $arg[2]]; |
|
594
|
1 |
|
} else { |
|
595
|
1 |
|
$value = $this->assertions->assertNumber($arg[2][0]); |
|
596
|
1 |
|
$precision = $this->assertions->assertNumber($arg[2][1]); |
|
597
|
|
|
|
|
598
|
1 |
|
return ['number', round($value, $precision), $arg[2][0][2]]; |
|
599
|
1 |
|
} |
|
600
|
1 |
|
} |
|
601
|
1 |
|
|
|
602
|
1 |
|
/** |
|
603
|
1 |
|
* @param array $arg |
|
604
|
1 |
|
* |
|
605
|
1 |
|
* @return array |
|
606
|
|
|
* @throws \LesserPhp\Exception\GeneralException |
|
607
|
1 |
|
*/ |
|
608
|
|
|
public function unit(array $arg) |
|
609
|
|
|
{ |
|
610
|
|
|
if ($arg[0] === 'list') { |
|
611
|
|
|
list($number, $newUnit) = $arg[2]; |
|
612
|
|
|
|
|
613
|
1 |
|
return [ |
|
614
|
1 |
|
'number', |
|
615
|
1 |
|
$this->assertions->assertNumber($number), |
|
616
|
|
|
$this->compiler->compileValue($this->e($newUnit)), |
|
617
|
|
|
]; |
|
618
|
1 |
|
} else { |
|
619
|
1 |
|
return ['number', $this->assertions->assertNumber($arg), '']; |
|
620
|
1 |
|
} |
|
621
|
1 |
|
} |
|
622
|
|
|
|
|
623
|
|
|
|
|
624
|
1 |
|
/** |
|
625
|
1 |
|
* @param array $args |
|
626
|
1 |
|
* |
|
627
|
|
|
* @return array |
|
628
|
|
|
*/ |
|
629
|
1 |
|
public function darken(array $args) |
|
630
|
|
|
{ |
|
631
|
|
|
list($color, $delta) = $this->compiler->colorArgs($args); |
|
632
|
1 |
|
|
|
633
|
|
|
$hsl = $this->converter->toHSL($color); |
|
634
|
1 |
|
$hsl[3] = $this->converter->clamp($hsl[3] - $delta, 100); |
|
635
|
1 |
|
|
|
636
|
|
|
return $this->converter->toRGB($hsl); |
|
637
|
|
|
} |
|
638
|
|
|
|
|
639
|
3 |
|
/** |
|
640
|
|
|
* @param array $args |
|
641
|
3 |
|
* |
|
642
|
3 |
|
* @return array |
|
643
|
|
|
*/ |
|
644
|
|
|
public function lighten(array $args) |
|
645
|
3 |
|
{ |
|
646
|
2 |
|
list($color, $delta) = $this->compiler->colorArgs($args); |
|
647
|
|
|
|
|
648
|
|
|
$hsl = $this->converter->toHSL($color); |
|
649
|
|
|
$hsl[3] = $this->converter->clamp($hsl[3] + $delta, 100); |
|
650
|
3 |
|
|
|
651
|
|
|
return $this->converter->toRGB($hsl); |
|
652
|
2 |
|
} |
|
653
|
|
|
|
|
654
|
1 |
|
/** |
|
655
|
1 |
|
* @param array $args |
|
656
|
1 |
|
* |
|
657
|
|
|
* @return array |
|
658
|
1 |
|
*/ |
|
659
|
|
|
public function saturate(array $args) |
|
660
|
1 |
|
{ |
|
661
|
|
|
list($color, $delta) = $this->compiler->colorArgs($args); |
|
662
|
|
|
|
|
663
|
|
|
$hsl = $this->converter->toHSL($color); |
|
664
|
|
|
$hsl[2] = $this->converter->clamp($hsl[2] + $delta, 100); |
|
665
|
3 |
|
|
|
666
|
|
|
return $this->converter->toRGB($hsl); |
|
667
|
1 |
|
} |
|
668
|
1 |
|
|
|
669
|
|
|
/** |
|
670
|
1 |
|
* @param array $args |
|
671
|
|
|
* |
|
672
|
|
|
* @return array |
|
673
|
1 |
|
*/ |
|
674
|
|
|
public function desaturate(array $args) |
|
675
|
1 |
|
{ |
|
676
|
|
|
list($color, $delta) = $this->compiler->colorArgs($args); |
|
677
|
|
|
|
|
678
|
|
|
$hsl = $this->converter->toHSL($color); |
|
679
|
3 |
|
$hsl[2] = $this->converter->clamp($hsl[2] - $delta, 100); |
|
680
|
|
|
|
|
681
|
1 |
|
return $this->converter->toRGB($hsl); |
|
682
|
1 |
|
} |
|
683
|
|
|
|
|
684
|
1 |
|
/** |
|
685
|
1 |
|
* @param array $args |
|
686
|
|
|
* |
|
687
|
1 |
|
* @return array |
|
688
|
1 |
|
*/ |
|
689
|
|
|
public function spin(array $args) |
|
690
|
1 |
|
{ |
|
691
|
|
|
list($color, $delta) = $this->compiler->colorArgs($args); |
|
692
|
|
|
|
|
693
|
|
|
$hsl = $this->converter->toHSL($color); |
|
694
|
|
|
|
|
695
|
|
|
$hsl[1] += $delta % 360; |
|
696
|
1 |
|
if ($hsl[1] < 0) { |
|
697
|
1 |
|
$hsl[1] += 360; |
|
698
|
|
|
} |
|
699
|
|
|
|
|
700
|
1 |
|
return $this->converter->toRGB($hsl); |
|
701
|
1 |
|
} |
|
702
|
|
|
|
|
703
|
|
|
/** |
|
704
|
1 |
|
* @param array $args |
|
705
|
1 |
|
* |
|
706
|
|
|
* @return int[] |
|
707
|
|
|
*/ |
|
708
|
1 |
|
public function fadeout(array $args) |
|
709
|
1 |
|
{ |
|
710
|
|
|
list($color, $delta) = $this->compiler->colorArgs($args); |
|
711
|
|
|
$color[4] = $this->converter->clamp((isset($color[4]) ? $color[4] : 1) - $delta / 100); |
|
712
|
1 |
|
|
|
713
|
|
|
return $color; |
|
714
|
1 |
|
} |
|
715
|
|
|
|
|
716
|
|
|
/** |
|
717
|
|
|
* @param array $args |
|
718
|
2 |
|
* |
|
719
|
|
|
* @return int[] |
|
720
|
|
|
*/ |
|
721
|
|
|
public function fadein(array $args) |
|
722
|
|
|
{ |
|
723
|
|
|
list($color, $delta) = $this->compiler->colorArgs($args); |
|
724
|
|
|
$color[4] = $this->converter->clamp((isset($color[4]) ? $color[4] : 1) + $delta / 100); |
|
725
|
|
|
|
|
726
|
7 |
|
return $color; |
|
727
|
|
|
} |
|
728
|
7 |
|
|
|
729
|
5 |
|
/** |
|
730
|
|
|
* @param array $color |
|
731
|
7 |
|
* |
|
732
|
|
|
* @return float |
|
733
|
|
|
* @throws \LesserPhp\Exception\GeneralException |
|
734
|
|
|
*/ |
|
735
|
|
|
public function hue(array $color) |
|
736
|
|
|
{ |
|
737
|
|
|
$hsl = $this->converter->toHSL($this->assertions->assertColor($color)); |
|
738
|
|
|
|
|
739
|
|
|
return round($hsl[1]); |
|
740
|
|
|
} |
|
741
|
|
|
|
|
742
|
4 |
|
/** |
|
743
|
|
|
* @param array $color |
|
744
|
4 |
|
* |
|
745
|
4 |
|
* @return float |
|
746
|
4 |
|
* @throws \LesserPhp\Exception\GeneralException |
|
747
|
4 |
|
*/ |
|
748
|
|
|
public function saturation(array $color) |
|
749
|
|
|
{ |
|
750
|
|
|
$hsl = $this->converter->toHSL($this->assertions->assertColor($color)); |
|
751
|
2 |
|
|
|
752
|
|
|
return round($hsl[2]); |
|
753
|
|
|
} |
|
754
|
|
|
|
|
755
|
|
|
/** |
|
756
|
|
|
* @param array $color |
|
757
|
|
|
* |
|
758
|
|
|
* @return float |
|
759
|
4 |
|
* @throws \LesserPhp\Exception\GeneralException |
|
760
|
|
|
*/ |
|
761
|
4 |
|
public function lightness(array $color) |
|
762
|
|
|
{ |
|
763
|
|
|
$hsl = $this->converter->toHSL($this->assertions->assertColor($color)); |
|
764
|
|
|
|
|
765
|
|
|
return round($hsl[3]); |
|
766
|
|
|
} |
|
767
|
|
|
|
|
768
|
|
|
/** |
|
769
|
|
|
* get the alpha of a color |
|
770
|
|
|
* defaults to 1 for non-colors or colors without an alpha |
|
771
|
|
|
* |
|
772
|
|
|
* @param array $value |
|
773
|
|
|
* |
|
774
|
|
|
* @return int|null |
|
775
|
|
|
*/ |
|
776
|
|
|
public function alpha(array $value) |
|
777
|
|
|
{ |
|
778
|
|
|
$color = $this->coerce->coerceColor($value); |
|
779
|
|
|
if ($color !== null) { |
|
780
|
|
|
return isset($color[4]) ? $color[4] : 1; |
|
781
|
|
|
} |
|
782
|
|
|
|
|
783
|
|
|
return null; |
|
784
|
|
|
} |
|
785
|
|
|
|
|
786
|
|
|
/** |
|
787
|
|
|
* set the alpha of the color |
|
788
|
|
|
* |
|
789
|
|
|
* @param array $args |
|
790
|
|
|
* |
|
791
|
|
|
* @return int[] |
|
792
|
|
|
*/ |
|
793
|
|
|
public function fade(array $args) |
|
794
|
|
|
{ |
|
795
|
|
|
list($color, $alpha) = $this->compiler->colorArgs($args); |
|
796
|
|
|
$color[4] = $this->converter->clamp($alpha / 100.0); |
|
797
|
|
|
|
|
798
|
|
|
return $color; |
|
799
|
|
|
} |
|
800
|
|
|
|
|
801
|
|
|
/** |
|
802
|
|
|
* @param array $arg |
|
803
|
|
|
* |
|
804
|
|
|
* @return array |
|
805
|
|
|
* @throws \LesserPhp\Exception\GeneralException |
|
806
|
|
|
*/ |
|
807
|
|
|
public function percentage(array $arg) |
|
808
|
|
|
{ |
|
809
|
|
|
$num = $this->assertions->assertNumber($arg); |
|
810
|
|
|
|
|
811
|
|
|
return ['number', $num * 100, '%']; |
|
812
|
|
|
} |
|
813
|
|
|
|
|
814
|
|
|
/** |
|
815
|
|
|
* mixes two colors by weight |
|
816
|
|
|
* mix(@color1, @color2, [@weight: 50%]); |
|
817
|
|
|
* http://sass-lang.com/docs/yardoc/Sass/Script/Functions.html#mix-instance_method |
|
818
|
|
|
* |
|
819
|
|
|
* @param array $args |
|
820
|
|
|
* |
|
821
|
|
|
* @return mixed |
|
822
|
|
|
* @throws \LesserPhp\Exception\GeneralException |
|
823
|
|
|
*/ |
|
824
|
|
|
public function mix(array $args) |
|
825
|
|
|
{ |
|
826
|
|
|
if ($args[0] !== 'list' || count($args[2]) < 2) { |
|
827
|
|
|
throw new GeneralException('mix expects (color1, color2, weight)'); |
|
828
|
|
|
} |
|
829
|
|
|
|
|
830
|
|
|
list($first, $second) = $args[2]; |
|
831
|
|
|
$first = $this->assertions->assertColor($first); |
|
832
|
|
|
$second = $this->assertions->assertColor($second); |
|
833
|
|
|
|
|
834
|
|
|
$firstAlpha = $this->alpha($first); |
|
835
|
|
|
$secondAlpha = $this->alpha($second); |
|
836
|
|
|
|
|
837
|
|
|
if (isset($args[2][2])) { |
|
838
|
|
|
$weight = $args[2][2][1] / 100.0; |
|
839
|
|
|
} else { |
|
840
|
|
|
$weight = 0.5; |
|
841
|
|
|
} |
|
842
|
|
|
|
|
843
|
|
|
$w = $weight * 2 - 1; |
|
844
|
|
|
$a = $firstAlpha - $secondAlpha; |
|
845
|
|
|
|
|
846
|
|
|
$w1 = (($w * $a === -1 ? $w : ($w + $a) / (1 + $w * $a)) + 1) / 2.0; |
|
847
|
|
|
$w2 = 1.0 - $w1; |
|
848
|
|
|
|
|
849
|
|
|
$new = [ |
|
850
|
|
|
'color', |
|
851
|
|
|
$w1 * $first[1] + $w2 * $second[1], |
|
852
|
|
|
$w1 * $first[2] + $w2 * $second[2], |
|
853
|
|
|
$w1 * $first[3] + $w2 * $second[3], |
|
854
|
|
|
]; |
|
855
|
|
|
|
|
856
|
|
|
// do not change the following to type safe comparison... |
|
857
|
|
|
if ($firstAlpha != 1.0 || $secondAlpha != 1.0) { |
|
858
|
|
|
$new[] = $firstAlpha * $weight + $secondAlpha * ($weight - 1); |
|
859
|
|
|
} |
|
860
|
|
|
|
|
861
|
|
|
return $this->compiler->fixColor($new); |
|
862
|
|
|
} |
|
863
|
|
|
|
|
864
|
|
|
/** |
|
865
|
|
|
* @param array $args |
|
866
|
|
|
* |
|
867
|
|
|
* @return array|null |
|
868
|
|
|
* @throws \LesserPhp\Exception\GeneralException |
|
869
|
|
|
*/ |
|
870
|
|
|
public function contrast(array $args) |
|
871
|
|
|
{ |
|
872
|
|
|
$darkColor = ['color', 0, 0, 0]; |
|
873
|
|
|
$lightColor = ['color', 255, 255, 255]; |
|
874
|
|
|
$threshold = 0.43; |
|
875
|
|
|
|
|
876
|
|
|
if ($args[0] === 'list') { |
|
877
|
|
|
$inputColor = isset($args[2][0]) ? $this->assertions->assertColor($args[2][0]) : $lightColor; |
|
878
|
|
|
$darkColor = isset($args[2][1]) ? $this->assertions->assertColor($args[2][1]) : $darkColor; |
|
879
|
|
|
$lightColor = isset($args[2][2]) ? $this->assertions->assertColor($args[2][2]) : $lightColor; |
|
880
|
|
|
if (isset($args[2][3])) { |
|
881
|
|
|
if (isset($args[2][3][2]) && $args[2][3][2] === '%') { |
|
882
|
|
|
$args[2][3][1] /= 100; |
|
883
|
|
|
unset($args[2][3][2]); |
|
884
|
|
|
} |
|
885
|
|
|
$threshold = $this->assertions->assertNumber($args[2][3]); |
|
886
|
|
|
} |
|
887
|
|
|
} else { |
|
888
|
|
|
$inputColor = $this->assertions->assertColor($args); |
|
889
|
|
|
} |
|
890
|
|
|
|
|
891
|
|
|
$inputColor = $this->coerce->coerceColor($inputColor); |
|
892
|
|
|
$darkColor = $this->coerce->coerceColor($darkColor); |
|
893
|
|
|
$lightColor = $this->coerce->coerceColor($lightColor); |
|
894
|
|
|
|
|
895
|
|
|
//Figure out which is actually light and dark! |
|
896
|
|
|
if ($this->luma($darkColor) > $this->luma($lightColor)) { |
|
|
|
|
|
|
897
|
|
|
$t = $lightColor; |
|
898
|
|
|
$lightColor = $darkColor; |
|
899
|
|
|
$darkColor = $t; |
|
900
|
|
|
} |
|
901
|
|
|
|
|
902
|
|
|
$inputColorAlpha = $this->alpha($inputColor); |
|
|
|
|
|
|
903
|
|
|
if (($this->luma($inputColor) * $inputColorAlpha) < $threshold) { |
|
|
|
|
|
|
904
|
|
|
return $lightColor; |
|
905
|
|
|
} |
|
906
|
|
|
|
|
907
|
|
|
return $darkColor; |
|
908
|
|
|
} |
|
909
|
|
|
|
|
910
|
|
|
/** |
|
911
|
|
|
* @param array $color |
|
912
|
|
|
* |
|
913
|
|
|
* @return float |
|
914
|
|
|
*/ |
|
915
|
|
|
public function luma(array $color) |
|
916
|
|
|
{ |
|
917
|
|
|
$color = $this->coerce->coerceColor($color); |
|
918
|
|
|
return (0.2126 * $color[1] / 255) + (0.7152 * $color[2] / 255) + (0.0722 * $color[3] / 255); |
|
919
|
|
|
} |
|
920
|
|
|
|
|
921
|
|
|
|
|
922
|
|
|
/** |
|
923
|
|
|
* @param array $number |
|
924
|
|
|
* @param $to |
|
925
|
|
|
* |
|
926
|
|
|
* @return array |
|
927
|
|
|
* @throws \LesserPhp\Exception\GeneralException |
|
928
|
|
|
*/ |
|
929
|
|
|
public function convertMe(array $number, $to) |
|
930
|
|
|
{ |
|
931
|
|
|
$value = $this->assertions->assertNumber($number); |
|
932
|
|
|
$from = $number[2]; |
|
933
|
|
|
|
|
934
|
|
|
// easy out |
|
935
|
|
|
if ($from == $to) { |
|
936
|
|
|
return $number; |
|
937
|
|
|
} |
|
938
|
|
|
|
|
939
|
|
|
// check if the from value is a length |
|
940
|
|
|
if (($fromIndex = array_search($from, static::$lengths)) !== false) { |
|
941
|
|
|
// make sure to value is too |
|
942
|
|
|
if (in_array($to, static::$lengths)) { |
|
943
|
|
|
// do the actual conversion |
|
944
|
|
|
$toIndex = array_search($to, static::$lengths); |
|
945
|
|
|
$px = $value * static::$lengths_to_base[$fromIndex]; |
|
946
|
|
|
$result = $px * (1 / static::$lengths_to_base[$toIndex]); |
|
947
|
|
|
|
|
948
|
|
|
$result = round($result, 8); |
|
949
|
|
|
|
|
950
|
|
|
return ['number', $result, $to]; |
|
951
|
|
|
} |
|
952
|
|
|
} |
|
953
|
|
|
|
|
954
|
|
|
// do the same check for times |
|
955
|
|
|
if (in_array($from, static::$times) && in_array($to, static::$times)) { |
|
956
|
|
|
// currently only ms and s are valid |
|
957
|
|
|
if ($to === 'ms') { |
|
958
|
|
|
$result = $value * 1000; |
|
959
|
|
|
} else { |
|
960
|
|
|
$result = $value / 1000; |
|
961
|
|
|
} |
|
962
|
|
|
|
|
963
|
|
|
$result = round($result, 8); |
|
964
|
|
|
|
|
965
|
|
|
return ['number', $result, $to]; |
|
966
|
|
|
} |
|
967
|
|
|
|
|
968
|
|
|
// lastly check for an angle |
|
969
|
|
|
if (in_array($from, static::$angles)) { |
|
970
|
|
|
// convert whatever angle it is into degrees |
|
971
|
|
|
$deg = $value; |
|
972
|
|
|
if ($from === 'rad') { |
|
973
|
|
|
$deg = rad2deg($value); |
|
974
|
|
|
} else { |
|
975
|
|
|
if ($from === 'turn') { |
|
976
|
|
|
$deg = $value * 360; |
|
977
|
|
|
} else { |
|
978
|
|
|
if ($from === 'grad') { |
|
979
|
|
|
$deg = $value / (400 / 360); |
|
980
|
|
|
} |
|
981
|
|
|
} |
|
982
|
|
|
} |
|
983
|
|
|
|
|
984
|
|
|
// Then convert it from degrees into desired unit |
|
985
|
|
|
$result = 0; |
|
986
|
|
|
if ($to === 'deg') { |
|
987
|
|
|
$result = $deg; |
|
988
|
|
|
} |
|
989
|
|
|
|
|
990
|
|
|
if ($to === 'rad') { |
|
991
|
|
|
$result = deg2rad($deg); |
|
992
|
|
|
} |
|
993
|
|
|
|
|
994
|
|
|
if ($to === 'turn') { |
|
995
|
|
|
$result = $value / 360; |
|
996
|
|
|
} |
|
997
|
|
|
|
|
998
|
|
|
if ($to === 'grad') { |
|
999
|
|
|
$result = $value * (400 / 360); |
|
1000
|
|
|
} |
|
1001
|
|
|
|
|
1002
|
|
|
$result = round($result, 8); |
|
1003
|
|
|
|
|
1004
|
|
|
return ['number', $result, $to]; |
|
1005
|
|
|
} |
|
1006
|
|
|
|
|
1007
|
|
|
// we don't know how to convert these |
|
1008
|
|
|
throw new GeneralException("Cannot convert {$from} to {$to}"); |
|
1009
|
|
|
} |
|
1010
|
|
|
|
|
1011
|
|
|
/** |
|
1012
|
|
|
* @param bool $a |
|
1013
|
|
|
* |
|
1014
|
|
|
* @return array |
|
1015
|
|
|
*/ |
|
1016
|
|
|
public function toBool($a) |
|
1017
|
|
|
{ |
|
1018
|
|
|
if ($a) { |
|
1019
|
|
|
return static::$TRUE; |
|
1020
|
|
|
} else { |
|
1021
|
|
|
return static::$FALSE; |
|
1022
|
|
|
} |
|
1023
|
|
|
} |
|
1024
|
|
|
|
|
1025
|
|
|
/** |
|
1026
|
|
|
* attempts to find the path of an import url, returns null for css files |
|
1027
|
|
|
* |
|
1028
|
|
|
* @param string $url |
|
1029
|
|
|
* |
|
1030
|
|
|
* @return null|string |
|
1031
|
|
|
*/ |
|
1032
|
|
|
public function findImport($url) |
|
1033
|
|
|
{ |
|
1034
|
|
|
foreach ($this->compiler->getImportDirs() as $dir) { |
|
1035
|
|
|
$full = $dir . (mb_substr($dir, -1) !== '/' ? '/' : '') . $url; |
|
1036
|
|
|
if ($this->fileExists($file = $full . '.less') || $this->fileExists($file = $full)) { |
|
1037
|
|
|
return $file; |
|
1038
|
|
|
} |
|
1039
|
|
|
} |
|
1040
|
|
|
|
|
1041
|
|
|
return null; |
|
1042
|
|
|
} |
|
1043
|
|
|
|
|
1044
|
|
|
/** |
|
1045
|
|
|
* @param string $name |
|
1046
|
|
|
* |
|
1047
|
|
|
* @return bool |
|
1048
|
|
|
*/ |
|
1049
|
|
|
public function fileExists($name) |
|
1050
|
|
|
{ |
|
1051
|
|
|
return is_file($name); |
|
1052
|
|
|
} |
|
1053
|
|
|
} |
|
1054
|
|
|
|
In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
stringvalues, the empty string''is a special case, in particular the following results might be unexpected: