From 8ca6cc32b2c789a3149861159ad258f2cb9491e3 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 14:39:39 +0200 Subject: Adding upstream version 2.11.4. Signed-off-by: Daniel Baumann --- library/vendor/lessphp/lib/Less/Functions.php | 1186 +++++++++++++++++++++++++ 1 file changed, 1186 insertions(+) create mode 100644 library/vendor/lessphp/lib/Less/Functions.php (limited to 'library/vendor/lessphp/lib/Less/Functions.php') diff --git a/library/vendor/lessphp/lib/Less/Functions.php b/library/vendor/lessphp/lib/Less/Functions.php new file mode 100644 index 0000000..3794e86 --- /dev/null +++ b/library/vendor/lessphp/lib/Less/Functions.php @@ -0,0 +1,1186 @@ +env = $env; + $this->currentFileInfo = $currentFileInfo; + } + + /** + * @param string $op + */ + public static function operate( $op, $a, $b ) { + switch ( $op ) { + case '+': +return $a + $b; + case '-': +return $a - $b; + case '*': +return $a * $b; + case '/': +return $a / $b; + } + } + + public static function clamp( $val, $max = 1 ) { + return min( max( $val, 0 ), $max ); + } + + public static function fround( $value ) { + if ( $value === 0 ) { + return $value; + } + + if ( Less_Parser::$options['numPrecision'] ) { + $p = pow( 10, Less_Parser::$options['numPrecision'] ); + return round( $value * $p ) / $p; + } + return $value; + } + + public static function number( $n ) { + if ( $n instanceof Less_Tree_Dimension ) { + return floatval( $n->unit->is( '%' ) ? $n->value / 100 : $n->value ); + } else if ( is_numeric( $n ) ) { + return $n; + } else { + throw new Less_Exception_Compiler( "color functions take numbers as parameters" ); + } + } + + public static function scaled( $n, $size = 255 ) { + if ( $n instanceof Less_Tree_Dimension && $n->unit->is( '%' ) ) { + return (float)$n->value * $size / 100; + } else { + return Less_Functions::number( $n ); + } + } + + public function rgb( $r = null, $g = null, $b = null ) { + if ( is_null( $r ) || is_null( $g ) || is_null( $b ) ) { + throw new Less_Exception_Compiler( "rgb expects three parameters" ); + } + return $this->rgba( $r, $g, $b, 1.0 ); + } + + public function rgba( $r = null, $g = null, $b = null, $a = null ) { + $rgb = array( $r, $g, $b ); + $rgb = array_map( array( 'Less_Functions','scaled' ), $rgb ); + + $a = self::number( $a ); + return new Less_Tree_Color( $rgb, $a ); + } + + public function hsl( $h, $s, $l ) { + return $this->hsla( $h, $s, $l, 1.0 ); + } + + public function hsla( $h, $s, $l, $a ) { + $h = fmod( self::number( $h ), 360 ) / 360; // Classic % operator will change float to int + $s = self::clamp( self::number( $s ) ); + $l = self::clamp( self::number( $l ) ); + $a = self::clamp( self::number( $a ) ); + + $m2 = $l <= 0.5 ? $l * ( $s + 1 ) : $l + $s - $l * $s; + + $m1 = $l * 2 - $m2; + + return $this->rgba( self::hsla_hue( $h + 1 / 3, $m1, $m2 ) * 255, + self::hsla_hue( $h, $m1, $m2 ) * 255, + self::hsla_hue( $h - 1 / 3, $m1, $m2 ) * 255, + $a ); + } + + /** + * @param double $h + */ + public function hsla_hue( $h, $m1, $m2 ) { + $h = $h < 0 ? $h + 1 : ( $h > 1 ? $h - 1 : $h ); + if ( $h * 6 < 1 ) return $m1 + ( $m2 - $m1 ) * $h * 6; else if ( $h * 2 < 1 ) return $m2; else if ( $h * 3 < 2 ) return $m1 + ( $m2 - $m1 ) * ( 2 / 3 - $h ) * 6; else return $m1; + } + + public function hsv( $h, $s, $v ) { + return $this->hsva( $h, $s, $v, 1.0 ); + } + + /** + * @param double $a + */ + public function hsva( $h, $s, $v, $a ) { + $h = ( ( Less_Functions::number( $h ) % 360 ) / 360 ) * 360; + $s = Less_Functions::number( $s ); + $v = Less_Functions::number( $v ); + $a = Less_Functions::number( $a ); + + $i = floor( ( $h / 60 ) % 6 ); + $f = ( $h / 60 ) - $i; + + $vs = array( $v, + $v * ( 1 - $s ), + $v * ( 1 - $f * $s ), + $v * ( 1 - ( 1 - $f ) * $s ) ); + + $perm = array( array( 0, 3, 1 ), + array( 2, 0, 1 ), + array( 1, 0, 3 ), + array( 1, 2, 0 ), + array( 3, 1, 0 ), + array( 0, 1, 2 ) ); + + return $this->rgba( $vs[$perm[$i][0]] * 255, + $vs[$perm[$i][1]] * 255, + $vs[$perm[$i][2]] * 255, + $a ); + } + + public function hue( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to hue must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $c = $color->toHSL(); + return new Less_Tree_Dimension( Less_Parser::round( $c['h'] ) ); + } + + public function saturation( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to saturation must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $c = $color->toHSL(); + return new Less_Tree_Dimension( Less_Parser::round( $c['s'] * 100 ), '%' ); + } + + public function lightness( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to lightness must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $c = $color->toHSL(); + return new Less_Tree_Dimension( Less_Parser::round( $c['l'] * 100 ), '%' ); + } + + public function hsvhue( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to hsvhue must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsv = $color->toHSV(); + return new Less_Tree_Dimension( Less_Parser::round( $hsv['h'] ) ); + } + + public function hsvsaturation( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to hsvsaturation must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsv = $color->toHSV(); + return new Less_Tree_Dimension( Less_Parser::round( $hsv['s'] * 100 ), '%' ); + } + + public function hsvvalue( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to hsvvalue must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsv = $color->toHSV(); + return new Less_Tree_Dimension( Less_Parser::round( $hsv['v'] * 100 ), '%' ); + } + + public function red( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to red must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return new Less_Tree_Dimension( $color->rgb[0] ); + } + + public function green( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to green must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return new Less_Tree_Dimension( $color->rgb[1] ); + } + + public function blue( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to blue must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return new Less_Tree_Dimension( $color->rgb[2] ); + } + + public function alpha( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to alpha must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $c = $color->toHSL(); + return new Less_Tree_Dimension( $c['a'] ); + } + + public function luma( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to luma must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return new Less_Tree_Dimension( Less_Parser::round( $color->luma() * $color->alpha * 100 ), '%' ); + } + + public function luminance( $color = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to luminance must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $luminance = + ( 0.2126 * $color->rgb[0] / 255 ) + + ( 0.7152 * $color->rgb[1] / 255 ) + + ( 0.0722 * $color->rgb[2] / 255 ); + + return new Less_Tree_Dimension( Less_Parser::round( $luminance * $color->alpha * 100 ), '%' ); + } + + public function saturate( $color = null, $amount = null ) { + // filter: saturate(3.2); + // should be kept as is, so check for color + if ( $color instanceof Less_Tree_Dimension ) { + return null; + } + + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to saturate must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$amount instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The second argument to saturate must be a percentage' . ( $amount instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsl = $color->toHSL(); + + $hsl['s'] += $amount->value / 100; + $hsl['s'] = self::clamp( $hsl['s'] ); + + return $this->hsla( $hsl['h'], $hsl['s'], $hsl['l'], $hsl['a'] ); + } + + /** + * @param Less_Tree_Dimension $amount + */ + public function desaturate( $color = null, $amount = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to desaturate must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$amount instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The second argument to desaturate must be a percentage' . ( $amount instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsl = $color->toHSL(); + + $hsl['s'] -= $amount->value / 100; + $hsl['s'] = self::clamp( $hsl['s'] ); + + return $this->hsla( $hsl['h'], $hsl['s'], $hsl['l'], $hsl['a'] ); + } + + public function lighten( $color = null, $amount = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to lighten must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$amount instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The second argument to lighten must be a percentage' . ( $amount instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsl = $color->toHSL(); + + $hsl['l'] += $amount->value / 100; + $hsl['l'] = self::clamp( $hsl['l'] ); + + return $this->hsla( $hsl['h'], $hsl['s'], $hsl['l'], $hsl['a'] ); + } + + public function darken( $color = null, $amount = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to darken must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$amount instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The second argument to darken must be a percentage' . ( $amount instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsl = $color->toHSL(); + $hsl['l'] -= $amount->value / 100; + $hsl['l'] = self::clamp( $hsl['l'] ); + + return $this->hsla( $hsl['h'], $hsl['s'], $hsl['l'], $hsl['a'] ); + } + + public function fadein( $color = null, $amount = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to fadein must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$amount instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The second argument to fadein must be a percentage' . ( $amount instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsl = $color->toHSL(); + $hsl['a'] += $amount->value / 100; + $hsl['a'] = self::clamp( $hsl['a'] ); + return $this->hsla( $hsl['h'], $hsl['s'], $hsl['l'], $hsl['a'] ); + } + + public function fadeout( $color = null, $amount = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to fadeout must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$amount instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The second argument to fadeout must be a percentage' . ( $amount instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsl = $color->toHSL(); + $hsl['a'] -= $amount->value / 100; + $hsl['a'] = self::clamp( $hsl['a'] ); + return $this->hsla( $hsl['h'], $hsl['s'], $hsl['l'], $hsl['a'] ); + } + + public function fade( $color = null, $amount = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to fade must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$amount instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The second argument to fade must be a percentage' . ( $amount instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsl = $color->toHSL(); + + $hsl['a'] = $amount->value / 100; + $hsl['a'] = self::clamp( $hsl['a'] ); + return $this->hsla( $hsl['h'], $hsl['s'], $hsl['l'], $hsl['a'] ); + } + + public function spin( $color = null, $amount = null ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to spin must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$amount instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The second argument to spin must be a number' . ( $amount instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $hsl = $color->toHSL(); + $hue = fmod( $hsl['h'] + $amount->value, 360 ); + + $hsl['h'] = $hue < 0 ? 360 + $hue : $hue; + + return $this->hsla( $hsl['h'], $hsl['s'], $hsl['l'], $hsl['a'] ); + } + + // + // Copyright (c) 2006-2009 Hampton Catlin, Nathan Weizenbaum, and Chris Eppstein + // https://sass-lang.com/ + // + + /** + * @param Less_Tree_Color $color1 + */ + public function mix( $color1 = null, $color2 = null, $weight = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to mix must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to mix must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$weight ) { + $weight = new Less_Tree_Dimension( '50', '%' ); + } + if ( !$weight instanceof Less_Tree_Dimension ) { + throw new Less_Exception_Compiler( 'The third argument to contrast must be a percentage' . ( $weight instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + $p = $weight->value / 100.0; + $w = $p * 2 - 1; + $hsl1 = $color1->toHSL(); + $hsl2 = $color2->toHSL(); + $a = $hsl1['a'] - $hsl2['a']; + + $w1 = ( ( ( ( $w * $a ) == -1 ) ? $w : ( $w + $a ) / ( 1 + $w * $a ) ) + 1 ) / 2; + $w2 = 1 - $w1; + + $rgb = array( $color1->rgb[0] * $w1 + $color2->rgb[0] * $w2, + $color1->rgb[1] * $w1 + $color2->rgb[1] * $w2, + $color1->rgb[2] * $w1 + $color2->rgb[2] * $w2 ); + + $alpha = $color1->alpha * $p + $color2->alpha * ( 1 - $p ); + + return new Less_Tree_Color( $rgb, $alpha ); + } + + public function greyscale( $color ) { + return $this->desaturate( $color, new Less_Tree_Dimension( 100, '%' ) ); + } + + public function contrast( $color, $dark = null, $light = null, $threshold = null ) { + // filter: contrast(3.2); + // should be kept as is, so check for color + if ( !$color instanceof Less_Tree_Color ) { + return null; + } + if ( !$light ) { + $light = $this->rgba( 255, 255, 255, 1.0 ); + } + if ( !$dark ) { + $dark = $this->rgba( 0, 0, 0, 1.0 ); + } + + if ( !$dark instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to contrast must be a color' . ( $dark instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$light instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The third argument to contrast must be a color' . ( $light instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + // Figure out which is actually light and dark! + if ( $dark->luma() > $light->luma() ) { + $t = $light; + $light = $dark; + $dark = $t; + } + if ( !$threshold ) { + $threshold = 0.43; + } else { + $threshold = Less_Functions::number( $threshold ); + } + + if ( $color->luma() < $threshold ) { + return $light; + } else { + return $dark; + } + } + + public function e( $str ) { + if ( is_string( $str ) ) { + return new Less_Tree_Anonymous( $str ); + } + return new Less_Tree_Anonymous( $str instanceof Less_Tree_JavaScript ? $str->expression : $str->value ); + } + + public function escape( $str ) { + $revert = array( '%21' => '!', '%2A' => '*', '%27' => "'",'%3F' => '?','%26' => '&','%2C' => ',','%2F' => '/','%40' => '@','%2B' => '+','%24' => '$' ); + + return new Less_Tree_Anonymous( strtr( rawurlencode( $str->value ), $revert ) ); + } + + /** + * todo: This function will need some additional work to make it work the same as less.js + * + */ + public function replace( $string, $pattern, $replacement, $flags = null ) { + $result = $string->value; + + $expr = '/'.str_replace( '/', '\\/', $pattern->value ).'/'; + if ( $flags && $flags->value ) { + $expr .= self::replace_flags( $flags->value ); + } + + $result = preg_replace( $expr, $replacement->value, $result ); + + if ( property_exists( $string, 'quote' ) ) { + return new Less_Tree_Quoted( $string->quote, $result, $string->escaped ); + } + return new Less_Tree_Quoted( '', $result ); + } + + public static function replace_flags( $flags ) { + $flags = str_split( $flags, 1 ); + $new_flags = ''; + + foreach ( $flags as $flag ) { + switch ( $flag ) { + case 'e': + case 'g': + break; + + default: + $new_flags .= $flag; + break; + } + } + + return $new_flags; + } + + public function _percent() { + $string = func_get_arg( 0 ); + + $args = func_get_args(); + array_shift( $args ); + $result = $string->value; + + foreach ( $args as $arg ) { + if ( preg_match( '/%[sda]/i', $result, $token ) ) { + $token = $token[0]; + $value = stristr( $token, 's' ) ? $arg->value : $arg->toCSS(); + $value = preg_match( '/[A-Z]$/', $token ) ? urlencode( $value ) : $value; + $result = preg_replace( '/%[sda]/i', $value, $result, 1 ); + } + } + $result = str_replace( '%%', '%', $result ); + + return new Less_Tree_Quoted( $string->quote, $result, $string->escaped ); + } + + public function unit( $val, $unit = null ) { + if ( !( $val instanceof Less_Tree_Dimension ) ) { + throw new Less_Exception_Compiler( 'The first argument to unit must be a number' . ( $val instanceof Less_Tree_Operation ? '. Have you forgotten parenthesis?' : '.' ) ); + } + + if ( $unit ) { + if ( $unit instanceof Less_Tree_Keyword ) { + $unit = $unit->value; + } else { + $unit = $unit->toCSS(); + } + } else { + $unit = ""; + } + return new Less_Tree_Dimension( $val->value, $unit ); + } + + public function convert( $val, $unit ) { + return $val->convertTo( $unit->value ); + } + + public function round( $n, $f = false ) { + $fraction = 0; + if ( $f !== false ) { + $fraction = $f->value; + } + + return $this->_math( 'Less_Parser::round', null, $n, $fraction ); + } + + public function pi() { + return new Less_Tree_Dimension( M_PI ); + } + + public function mod( $a, $b ) { + return new Less_Tree_Dimension( $a->value % $b->value, $a->unit ); + } + + public function pow( $x, $y ) { + if ( is_numeric( $x ) && is_numeric( $y ) ) { + $x = new Less_Tree_Dimension( $x ); + $y = new Less_Tree_Dimension( $y ); + } elseif ( !( $x instanceof Less_Tree_Dimension ) || !( $y instanceof Less_Tree_Dimension ) ) { + throw new Less_Exception_Compiler( 'Arguments must be numbers' ); + } + + return new Less_Tree_Dimension( pow( $x->value, $y->value ), $x->unit ); + } + + // var mathFunctions = [{name:"ce ... + public function ceil( $n ) { + return $this->_math( 'ceil', null, $n ); + } + + public function floor( $n ) { + return $this->_math( 'floor', null, $n ); + } + + public function sqrt( $n ) { + return $this->_math( 'sqrt', null, $n ); + } + + public function abs( $n ) { + return $this->_math( 'abs', null, $n ); + } + + public function tan( $n ) { + return $this->_math( 'tan', '', $n ); + } + + public function sin( $n ) { + return $this->_math( 'sin', '', $n ); + } + + public function cos( $n ) { + return $this->_math( 'cos', '', $n ); + } + + public function atan( $n ) { + return $this->_math( 'atan', 'rad', $n ); + } + + public function asin( $n ) { + return $this->_math( 'asin', 'rad', $n ); + } + + public function acos( $n ) { + return $this->_math( 'acos', 'rad', $n ); + } + + private function _math() { + $args = func_get_args(); + $fn = array_shift( $args ); + $unit = array_shift( $args ); + + if ( $args[0] instanceof Less_Tree_Dimension ) { + + if ( $unit === null ) { + $unit = $args[0]->unit; + } else { + $args[0] = $args[0]->unify(); + } + $args[0] = (float)$args[0]->value; + return new Less_Tree_Dimension( call_user_func_array( $fn, $args ), $unit ); + } else if ( is_numeric( $args[0] ) ) { + return call_user_func_array( $fn, $args ); + } else { + throw new Less_Exception_Compiler( "math functions take numbers as parameters" ); + } + } + + /** + * @param boolean $isMin + */ + private function _minmax( $isMin, $args ) { + $arg_count = count( $args ); + + if ( $arg_count < 1 ) { + throw new Less_Exception_Compiler( 'one or more arguments required' ); + } + + $j = null; + $unitClone = null; + $unitStatic = null; + + $order = array(); // elems only contains original argument values. + $values = array(); // key is the unit.toString() for unified tree.Dimension values, + // value is the index into the order array. + + for ( $i = 0; $i < $arg_count; $i++ ) { + $current = $args[$i]; + if ( !( $current instanceof Less_Tree_Dimension ) ) { + if ( is_array( $args[$i]->value ) ) { + $args[] = $args[$i]->value; + } + continue; + } + + if ( $current->unit->toString() === '' && !$unitClone ) { + $temp = new Less_Tree_Dimension( $current->value, $unitClone ); + $currentUnified = $temp->unify(); + } else { + $currentUnified = $current->unify(); + } + + if ( $currentUnified->unit->toString() === "" && !$unitStatic ) { + $unit = $unitStatic; + } else { + $unit = $currentUnified->unit->toString(); + } + + if ( $unit !== '' && !$unitStatic || $unit !== '' && $order[0]->unify()->unit->toString() === "" ) { + $unitStatic = $unit; + } + + if ( $unit != '' && !$unitClone ) { + $unitClone = $current->unit->toString(); + } + + if ( isset( $values[''] ) && $unit !== '' && $unit === $unitStatic ) { + $j = $values['']; + } elseif ( isset( $values[$unit] ) ) { + $j = $values[$unit]; + } else { + + if ( $unitStatic && $unit !== $unitStatic ) { + throw new Less_Exception_Compiler( 'incompatible types' ); + } + $values[$unit] = count( $order ); + $order[] = $current; + continue; + } + + if ( $order[$j]->unit->toString() === "" && $unitClone ) { + $temp = new Less_Tree_Dimension( $order[$j]->value, $unitClone ); + $referenceUnified = $temp->unify(); + } else { + $referenceUnified = $order[$j]->unify(); + } + if ( ( $isMin && $currentUnified->value < $referenceUnified->value ) || ( !$isMin && $currentUnified->value > $referenceUnified->value ) ) { + $order[$j] = $current; + } + } + + if ( count( $order ) == 1 ) { + return $order[0]; + } + $args = array(); + foreach ( $order as $a ) { + $args[] = $a->toCSS(); + } + return new Less_Tree_Anonymous( ( $isMin ? 'min(' : 'max(' ) . implode( Less_Environment::$_outputMap[','], $args ).')' ); + } + + public function min() { + $args = func_get_args(); + return $this->_minmax( true, $args ); + } + + public function max() { + $args = func_get_args(); + return $this->_minmax( false, $args ); + } + + public function getunit( $n ) { + return new Less_Tree_Anonymous( $n->unit ); + } + + public function argb( $color ) { + if ( !$color instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to argb must be a color' . ( $color instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return new Less_Tree_Anonymous( $color->toARGB() ); + } + + public function percentage( $n ) { + return new Less_Tree_Dimension( $n->value * 100, '%' ); + } + + public function color( $n ) { + if ( $n instanceof Less_Tree_Quoted ) { + $colorCandidate = $n->value; + $returnColor = Less_Tree_Color::fromKeyword( $colorCandidate ); + if ( $returnColor ) { + return $returnColor; + } + if ( preg_match( '/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/', $colorCandidate ) ) { + return new Less_Tree_Color( substr( $colorCandidate, 1 ) ); + } + throw new Less_Exception_Compiler( "argument must be a color keyword or 3/6 digit hex e.g. #FFF" ); + } else { + throw new Less_Exception_Compiler( "argument must be a string" ); + } + } + + public function iscolor( $n ) { + return $this->_isa( $n, 'Less_Tree_Color' ); + } + + public function isnumber( $n ) { + return $this->_isa( $n, 'Less_Tree_Dimension' ); + } + + public function isstring( $n ) { + return $this->_isa( $n, 'Less_Tree_Quoted' ); + } + + public function iskeyword( $n ) { + return $this->_isa( $n, 'Less_Tree_Keyword' ); + } + + public function isurl( $n ) { + return $this->_isa( $n, 'Less_Tree_Url' ); + } + + public function ispixel( $n ) { + return $this->isunit( $n, 'px' ); + } + + public function ispercentage( $n ) { + return $this->isunit( $n, '%' ); + } + + public function isem( $n ) { + return $this->isunit( $n, 'em' ); + } + + /** + * @param string $unit + */ + public function isunit( $n, $unit ) { + if ( is_object( $unit ) && property_exists( $unit, 'value' ) ) { + $unit = $unit->value; + } + + return ( $n instanceof Less_Tree_Dimension ) && $n->unit->is( $unit ) ? new Less_Tree_Keyword( 'true' ) : new Less_Tree_Keyword( 'false' ); + } + + /** + * @param string $type + */ + private function _isa( $n, $type ) { + return is_a( $n, $type ) ? new Less_Tree_Keyword( 'true' ) : new Less_Tree_Keyword( 'false' ); + } + + public function tint( $color, $amount = null ) { + return $this->mix( $this->rgb( 255, 255, 255 ), $color, $amount ); + } + + public function shade( $color, $amount = null ) { + return $this->mix( $this->rgb( 0, 0, 0 ), $color, $amount ); + } + + public function extract( $values, $index ) { + $index = (int)$index->value - 1; // (1-based index) + // handle non-array values as an array of length 1 + // return 'undefined' if index is invalid + if ( property_exists( $values, 'value' ) && is_array( $values->value ) ) { + if ( isset( $values->value[$index] ) ) { + return $values->value[$index]; + } + return null; + + } elseif ( (int)$index === 0 ) { + return $values; + } + + return null; + } + + public function length( $values ) { + $n = ( property_exists( $values, 'value' ) && is_array( $values->value ) ) ? count( $values->value ) : 1; + return new Less_Tree_Dimension( $n ); + } + + public function datauri( $mimetypeNode, $filePathNode = null ) { + $filePath = ( $filePathNode ? $filePathNode->value : null ); + $mimetype = $mimetypeNode->value; + + $args = 2; + if ( !$filePath ) { + $filePath = $mimetype; + $args = 1; + } + + $filePath = str_replace( '\\', '/', $filePath ); + if ( Less_Environment::isPathRelative( $filePath ) ) { + + if ( Less_Parser::$options['relativeUrls'] ) { + $temp = $this->currentFileInfo['currentDirectory']; + } else { + $temp = $this->currentFileInfo['entryPath']; + } + + if ( !empty( $temp ) ) { + $filePath = Less_Environment::normalizePath( rtrim( $temp, '/' ).'/'.$filePath ); + } + + } + + // detect the mimetype if not given + if ( $args < 2 ) { + + /* incomplete + $mime = require('mime'); + mimetype = mime.lookup(path); + + // use base 64 unless it's an ASCII or UTF-8 format + var charset = mime.charsets.lookup(mimetype); + useBase64 = ['US-ASCII', 'UTF-8'].indexOf(charset) < 0; + if (useBase64) mimetype += ';base64'; + */ + + $mimetype = Less_Mime::lookup( $filePath ); + + $charset = Less_Mime::charsets_lookup( $mimetype ); + $useBase64 = !in_array( $charset, array( 'US-ASCII', 'UTF-8' ) ); + if ( $useBase64 ) { $mimetype .= ';base64'; + } + + } else { + $useBase64 = preg_match( '/;base64$/', $mimetype ); + } + + if ( file_exists( $filePath ) ) { + $buf = @file_get_contents( $filePath ); + } else { + $buf = false; + } + + // IE8 cannot handle a data-uri larger than 32KB. If this is exceeded + // and the --ieCompat flag is enabled, return a normal url() instead. + $DATA_URI_MAX_KB = 32; + $fileSizeInKB = round( strlen( $buf ) / 1024 ); + if ( $fileSizeInKB >= $DATA_URI_MAX_KB ) { + $url = new Less_Tree_Url( ( $filePathNode ?: $mimetypeNode ), $this->currentFileInfo ); + return $url->compile( $this ); + } + + if ( $buf ) { + $buf = $useBase64 ? base64_encode( $buf ) : rawurlencode( $buf ); + $filePath = '"data:' . $mimetype . ',' . $buf . '"'; + } + + return new Less_Tree_Url( new Less_Tree_Anonymous( $filePath ) ); + } + + // svg-gradient + public function svggradient( $direction ) { + $throw_message = 'svg-gradient expects direction, start_color [start_position], [color position,]..., end_color [end_position]'; + $arguments = func_get_args(); + + if ( count( $arguments ) < 3 ) { + throw new Less_Exception_Compiler( $throw_message ); + } + + $stops = array_slice( $arguments, 1 ); + $gradientType = 'linear'; + $rectangleDimension = 'x="0" y="0" width="1" height="1"'; + $useBase64 = true; + $directionValue = $direction->toCSS(); + + switch ( $directionValue ) { + case "to bottom": + $gradientDirectionSvg = 'x1="0%" y1="0%" x2="0%" y2="100%"'; + break; + case "to right": + $gradientDirectionSvg = 'x1="0%" y1="0%" x2="100%" y2="0%"'; + break; + case "to bottom right": + $gradientDirectionSvg = 'x1="0%" y1="0%" x2="100%" y2="100%"'; + break; + case "to top right": + $gradientDirectionSvg = 'x1="0%" y1="100%" x2="100%" y2="0%"'; + break; + case "ellipse": + case "ellipse at center": + $gradientType = "radial"; + $gradientDirectionSvg = 'cx="50%" cy="50%" r="75%"'; + $rectangleDimension = 'x="-50" y="-50" width="101" height="101"'; + break; + default: + throw new Less_Exception_Compiler( "svg-gradient direction must be 'to bottom', 'to right', 'to bottom right', 'to top right' or 'ellipse at center'" ); + } + + $returner = '' . + '' . + '<' . $gradientType . 'Gradient id="gradient" gradientUnits="userSpaceOnUse" ' . $gradientDirectionSvg . '>'; + + for ( $i = 0; $i < count( $stops ); $i++ ) { + if ( is_object( $stops[$i] ) && property_exists( $stops[$i], 'value' ) ) { + $color = $stops[$i]->value[0]; + $position = $stops[$i]->value[1]; + } else { + $color = $stops[$i]; + $position = null; + } + + if ( !( $color instanceof Less_Tree_Color ) || ( !( ( $i === 0 || $i + 1 === count( $stops ) ) && $position === null ) && !( $position instanceof Less_Tree_Dimension ) ) ) { + throw new Less_Exception_Compiler( $throw_message ); + } + if ( $position ) { + $positionValue = $position->toCSS(); + } elseif ( $i === 0 ) { + $positionValue = '0%'; + } else { + $positionValue = '100%'; + } + $alpha = $color->alpha; + $returner .= ''; + } + + $returner .= ''; + + if ( $useBase64 ) { + $returner = "'data:image/svg+xml;base64,".base64_encode( $returner )."'"; + } else { + $returner = "'data:image/svg+xml,".$returner."'"; + } + + return new Less_Tree_URL( new Less_Tree_Anonymous( $returner ) ); + } + + /** + * Php version of javascript's `encodeURIComponent` function + * + * @param string $string The string to encode + * @return string The encoded string + */ + public static function encodeURIComponent( $string ) { + $revert = array( '%21' => '!', '%2A' => '*', '%27' => "'", '%28' => '(', '%29' => ')' ); + return strtr( rawurlencode( $string ), $revert ); + } + + // Color Blending + // ref: https://www.w3.org/TR/compositing-1/ + + public function colorBlend( $mode, $color1, $color2 ) { + $ab = $color1->alpha; // backdrop + $as = $color2->alpha; // source + $r = array(); // result + + $ar = $as + $ab * ( 1 - $as ); + for ( $i = 0; $i < 3; $i++ ) { + $cb = $color1->rgb[$i] / 255; + $cs = $color2->rgb[$i] / 255; + $cr = call_user_func( $mode, $cb, $cs ); + if ( $ar ) { + $cr = ( $as * $cs + $ab * ( $cb - $as * ( $cb + $cs - $cr ) ) ) / $ar; + } + $r[$i] = $cr * 255; + } + + return new Less_Tree_Color( $r, $ar ); + } + + public function multiply( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to multiply must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to multiply must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendMultiply' ), $color1, $color2 ); + } + + private function colorBlendMultiply( $cb, $cs ) { + return $cb * $cs; + } + + public function screen( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to screen must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to screen must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendScreen' ), $color1, $color2 ); + } + + private function colorBlendScreen( $cb, $cs ) { + return $cb + $cs - $cb * $cs; + } + + public function overlay( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to overlay must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to overlay must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendOverlay' ), $color1, $color2 ); + } + + private function colorBlendOverlay( $cb, $cs ) { + $cb *= 2; + return ( $cb <= 1 ) + ? $this->colorBlendMultiply( $cb, $cs ) + : $this->colorBlendScreen( $cb - 1, $cs ); + } + + public function softlight( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to softlight must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to softlight must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendSoftlight' ), $color1, $color2 ); + } + + private function colorBlendSoftlight( $cb, $cs ) { + $d = 1; + $e = $cb; + if ( $cs > 0.5 ) { + $e = 1; + $d = ( $cb > 0.25 ) ? sqrt( $cb ) + : ( ( 16 * $cb - 12 ) * $cb + 4 ) * $cb; + } + return $cb - ( 1 - 2 * $cs ) * $e * ( $d - $cb ); + } + + public function hardlight( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to hardlight must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to hardlight must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendHardlight' ), $color1, $color2 ); + } + + private function colorBlendHardlight( $cb, $cs ) { + return $this->colorBlendOverlay( $cs, $cb ); + } + + public function difference( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to difference must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to difference must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendDifference' ), $color1, $color2 ); + } + + private function colorBlendDifference( $cb, $cs ) { + return abs( $cb - $cs ); + } + + public function exclusion( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to exclusion must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to exclusion must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendExclusion' ), $color1, $color2 ); + } + + private function colorBlendExclusion( $cb, $cs ) { + return $cb + $cs - 2 * $cb * $cs; + } + + public function average( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to average must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to average must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendAverage' ), $color1, $color2 ); + } + + // non-w3c functions: + public function colorBlendAverage( $cb, $cs ) { + return ( $cb + $cs ) / 2; + } + + public function negation( $color1 = null, $color2 = null ) { + if ( !$color1 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The first argument to negation must be a color' . ( $color1 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + if ( !$color2 instanceof Less_Tree_Color ) { + throw new Less_Exception_Compiler( 'The second argument to negation must be a color' . ( $color2 instanceof Less_Tree_Expression ? ' (did you forgot commas?)' : '' ) ); + } + + return $this->colorBlend( array( $this,'colorBlendNegation' ), $color1, $color2 ); + } + + public function colorBlendNegation( $cb, $cs ) { + return 1 - abs( $cb + $cs - 1 ); + } + + // ~ End of Color Blending + +} -- cgit v1.2.3