139 lines
3.0 KiB
PHP
139 lines
3.0 KiB
PHP
<?php
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/**
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* @private
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*/
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class Less_Tree_Unit extends Less_Tree {
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var $numerator = [];
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var $denominator = [];
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public $backupUnit;
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public $type = 'Unit';
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public function __construct( $numerator = [], $denominator = [], $backupUnit = null ) {
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$this->numerator = $numerator;
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$this->denominator = $denominator;
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$this->backupUnit = $backupUnit;
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}
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public function __clone() {
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}
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/**
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* @see Less_Tree::genCSS
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*/
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public function genCSS( $output ) {
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if ( $this->numerator ) {
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$output->add( $this->numerator[0] );
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} elseif ( $this->denominator ) {
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$output->add( $this->denominator[0] );
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} elseif ( !Less_Parser::$options['strictUnits'] && $this->backupUnit ) {
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$output->add( $this->backupUnit );
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return;
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}
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}
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public function toString() {
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$returnStr = implode( '*', $this->numerator );
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foreach ( $this->denominator as $d ) {
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$returnStr .= '/' . $d;
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}
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return $returnStr;
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}
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public function __toString() {
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return $this->toString();
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}
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/**
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* @param Less_Tree_Unit $other
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*/
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public function compare( $other ) {
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return $this->is( $other->toString() ) ? 0 : -1;
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}
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public function is( $unitString ) {
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return $this->toString() === $unitString;
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}
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public function isLength() {
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$css = $this->toCSS();
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return (bool)preg_match( '/px|em|%|in|cm|mm|pc|pt|ex/', $css );
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}
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public function isAngle() {
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return isset( Less_Tree_UnitConversions::$angle[$this->toCSS()] );
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}
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public function isEmpty() {
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return !$this->numerator && !$this->denominator;
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}
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public function isSingular() {
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return count( $this->numerator ) <= 1 && !$this->denominator;
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}
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public function usedUnits() {
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$result = [];
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foreach ( Less_Tree_UnitConversions::$groups as $groupName ) {
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$group = Less_Tree_UnitConversions::${$groupName};
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foreach ( $this->numerator as $atomicUnit ) {
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if ( isset( $group[$atomicUnit] ) && !isset( $result[$groupName] ) ) {
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$result[$groupName] = $atomicUnit;
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}
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}
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foreach ( $this->denominator as $atomicUnit ) {
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if ( isset( $group[$atomicUnit] ) && !isset( $result[$groupName] ) ) {
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$result[$groupName] = $atomicUnit;
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}
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}
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}
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return $result;
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}
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public function cancel() {
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$counter = [];
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$backup = null;
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foreach ( $this->numerator as $atomicUnit ) {
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if ( !$backup ) {
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$backup = $atomicUnit;
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}
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$counter[$atomicUnit] = ( $counter[$atomicUnit] ?? 0 ) + 1;
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}
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foreach ( $this->denominator as $atomicUnit ) {
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if ( !$backup ) {
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$backup = $atomicUnit;
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}
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$counter[$atomicUnit] = ( $counter[$atomicUnit] ?? 0 ) - 1;
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}
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$this->numerator = [];
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$this->denominator = [];
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foreach ( $counter as $atomicUnit => $count ) {
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if ( $count > 0 ) {
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for ( $i = 0; $i < $count; $i++ ) {
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$this->numerator[] = $atomicUnit;
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}
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} elseif ( $count < 0 ) {
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for ( $i = 0; $i < -$count; $i++ ) {
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$this->denominator[] = $atomicUnit;
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}
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}
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}
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if ( !$this->numerator && !$this->denominator && $backup ) {
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$this->backupUnit = $backup;
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}
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sort( $this->numerator );
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sort( $this->denominator );
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}
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}
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