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[autoinstallsdev/mediawiki.git] / vendor / oyejorge / less.php / lib / Less / Tree / Dimension.php

diff --git a/vendor/oyejorge/less.php/lib/Less/Tree/Dimension.php b/vendor/oyejorge/less.php/lib/Less/Tree/Dimension.php
new file mode 100644 (file)
index 0000000..2bfb9d5
--- /dev/null
+++ b/vendor/oyejorge/less.php/lib/Less/Tree/Dimension.php
@@ -0,0 +1,201 @@
+<?php
+
+/**
+ * Dimension
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Dimension extends Less_Tree{
+
+       public $value;
+       public $unit;
+       public $type = 'Dimension';
+
+    public function __construct($value, $unit = null){
+        $this->value = floatval($value);
+
+               if( $unit && ($unit instanceof Less_Tree_Unit) ){
+                       $this->unit = $unit;
+               }elseif( $unit ){
+                       $this->unit = new Less_Tree_Unit( array($unit) );
+               }else{
+                       $this->unit = new Less_Tree_Unit( );
+               }
+    }
+
+    public function accept( $visitor ){
+               $this->unit = $visitor->visitObj( $this->unit );
+       }
+
+    public function compile(){
+        return $this;
+    }
+
+    public function toColor() {
+        return new Less_Tree_Color(array($this->value, $this->value, $this->value));
+    }
+
+    /**
+     * @see Less_Tree::genCSS
+     */
+       public function genCSS( $output ){
+
+               if( Less_Parser::$options['strictUnits'] && !$this->unit->isSingular() ){
+                       throw new Less_Exception_Compiler("Multiple units in dimension. Correct the units or use the unit function. Bad unit: ".$this->unit->toString());
+               }
+
+               $value = Less_Functions::fround( $this->value );
+               $strValue = (string)$value;
+
+               if( $value !== 0 && $value < 0.000001 && $value > -0.000001 ){
+                       // would be output 1e-6 etc.
+                       $strValue = number_format($strValue,10);
+                       $strValue = preg_replace('/\.?0+$/','', $strValue);
+               }
+
+               if( Less_Parser::$options['compress'] ){
+                       // Zero values doesn't need a unit
+                       if( $value === 0 && $this->unit->isLength() ){
+                               $output->add( $strValue );
+                               return $strValue;
+                       }
+
+                       // Float values doesn't need a leading zero
+                       if( $value > 0 && $value < 1 && $strValue[0] === '0' ){
+                               $strValue = substr($strValue,1);
+                       }
+               }
+
+               $output->add( $strValue );
+               $this->unit->genCSS( $output );
+       }
+
+    public function __toString(){
+        return $this->toCSS();
+    }
+
+    // In an operation between two Dimensions,
+    // we default to the first Dimension's unit,
+    // so `1px + 2em` will yield `3px`.
+
+    /**
+     * @param string $op
+     */
+    public function operate( $op, $other){
+
+               $value = Less_Functions::operate( $op, $this->value, $other->value);
+               $unit = clone $this->unit;
+
+               if( $op === '+' || $op === '-' ){
+
+                       if( !$unit->numerator && !$unit->denominator ){
+                               $unit->numerator = $other->unit->numerator;
+                               $unit->denominator = $other->unit->denominator;
+                       }elseif( !$other->unit->numerator && !$other->unit->denominator ){
+                               // do nothing
+                       }else{
+                               $other = $other->convertTo( $this->unit->usedUnits());
+
+                               if( Less_Parser::$options['strictUnits'] && $other->unit->toString() !== $unit->toCSS() ){
+                                       throw new Less_Exception_Compiler("Incompatible units. Change the units or use the unit function. Bad units: '" . $unit->toString() . "' and " . $other->unit->toString() . "'.");
+                               }
+
+                               $value = Less_Functions::operate( $op, $this->value, $other->value);
+                       }
+               }elseif( $op === '*' ){
+                       $unit->numerator = array_merge($unit->numerator, $other->unit->numerator);
+                       $unit->denominator = array_merge($unit->denominator, $other->unit->denominator);
+                       sort($unit->numerator);
+                       sort($unit->denominator);
+                       $unit->cancel();
+               }elseif( $op === '/' ){
+                       $unit->numerator = array_merge($unit->numerator, $other->unit->denominator);
+                       $unit->denominator = array_merge($unit->denominator, $other->unit->numerator);
+                       sort($unit->numerator);
+                       sort($unit->denominator);
+                       $unit->cancel();
+               }
+               return new Less_Tree_Dimension( $value, $unit);
+    }
+
+       public function compare($other) {
+               if ($other instanceof Less_Tree_Dimension) {
+
+                       if( $this->unit->isEmpty() || $other->unit->isEmpty() ){
+                               $a = $this;
+                               $b = $other;
+                       } else {
+                               $a = $this->unify();
+                               $b = $other->unify();
+                               if( $a->unit->compare($b->unit) !== 0 ){
+                                       return -1;
+                               }
+                       }
+                       $aValue = $a->value;
+                       $bValue = $b->value;
+
+                       if ($bValue > $aValue) {
+                               return -1;
+                       } elseif ($bValue < $aValue) {
+                               return 1;
+                       } else {
+                               return 0;
+                       }
+               } else {
+                       return -1;
+               }
+       }
+
+    public function unify() {
+               return $this->convertTo(array('length'=> 'px', 'duration'=> 's', 'angle' => 'rad' ));
+       }
+
+    public function convertTo($conversions) {
+               $value = $this->value;
+               $unit = clone $this->unit;
+
+               if( is_string($conversions) ){
+                       $derivedConversions = array();
+                       foreach( Less_Tree_UnitConversions::$groups as $i ){
+                               if( isset(Less_Tree_UnitConversions::${$i}[$conversions]) ){
+                                       $derivedConversions = array( $i => $conversions);
+                               }
+                       }
+                       $conversions = $derivedConversions;
+               }
+
+
+               foreach($conversions as $groupName => $targetUnit){
+                       $group = Less_Tree_UnitConversions::${$groupName};
+
+                       //numerator
+                       foreach($unit->numerator as $i => $atomicUnit){
+                               $atomicUnit = $unit->numerator[$i];
+                               if( !isset($group[$atomicUnit]) ){
+                                       continue;
+                               }
+
+                               $value = $value * ($group[$atomicUnit] / $group[$targetUnit]);
+
+                               $unit->numerator[$i] = $targetUnit;
+                       }
+
+                       //denominator
+                       foreach($unit->denominator as $i => $atomicUnit){
+                               $atomicUnit = $unit->denominator[$i];
+                               if( !isset($group[$atomicUnit]) ){
+                                       continue;
+                               }
+
+                               $value = $value / ($group[$atomicUnit] / $group[$targetUnit]);
+
+                               $unit->denominator[$i] = $targetUnit;
+                       }
+               }
+
+               $unit->cancel();
+
+               return new Less_Tree_Dimension( $value, $unit);
+    }
+}