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| 1 | <?php |
| 2 | /** |
| 3 | * @private |
| 4 | * @see less-2.5.3.js#Dimension.prototype |
| 5 | */ |
| 6 | class Less_Tree_Dimension extends Less_Tree implements Less_Tree_HasValueProperty { |
| 7 | |
| 8 | /** @var float */ |
| 9 | public $value; |
| 10 | public $unit; |
| 11 | |
| 12 | public function __construct( $value, $unit = null ) { |
| 13 | $this->value = floatval( $value ); |
| 14 | |
| 15 | if ( $unit instanceof Less_Tree_Unit ) { |
| 16 | $this->unit = $unit; |
| 17 | } elseif ( $unit ) { |
| 18 | $this->unit = new Less_Tree_Unit( [ $unit ] ); |
| 19 | } else { |
| 20 | $this->unit = new Less_Tree_Unit(); |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | public function accept( $visitor ) { |
| 25 | $this->unit = $visitor->visitObj( $this->unit ); |
| 26 | } |
| 27 | |
| 28 | public function toColor() { |
| 29 | return new Less_Tree_Color( [ $this->value, $this->value, $this->value ] ); |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @see Less_Tree::genCSS |
| 34 | */ |
| 35 | public function genCSS( $output ) { |
| 36 | if ( Less_Parser::$options['strictUnits'] && !$this->unit->isSingular() ) { |
| 37 | throw new Less_Exception_Compiler( "Multiple units in dimension. Correct the units or use the unit function. Bad unit: " . $this->unit->toString() ); |
| 38 | } |
| 39 | |
| 40 | $value = $this->fround( $this->value ); |
| 41 | $strValue = (string)$value; |
| 42 | |
| 43 | if ( $value !== 0 && $value < 0.000001 && $value > -0.000001 ) { |
| 44 | // would be output 1e-6 etc. |
| 45 | $strValue = number_format( (float)$strValue, 10 ); |
| 46 | $strValue = preg_replace( '/\.?0+$/', '', $strValue ); |
| 47 | } |
| 48 | |
| 49 | if ( Less_Parser::$options['compress'] ) { |
| 50 | // Zero values doesn't need a unit |
| 51 | if ( $value === 0 && $this->unit->isLength() ) { |
| 52 | $output->add( $strValue ); |
| 53 | return; |
| 54 | } |
| 55 | |
| 56 | // Float values doesn't need a leading zero |
| 57 | if ( $value > 0 && $value < 1 && $strValue[0] === '0' ) { |
| 58 | $strValue = substr( $strValue, 1 ); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | $output->add( $strValue ); |
| 63 | $this->unit->genCSS( $output ); |
| 64 | } |
| 65 | |
| 66 | public function __toString() { |
| 67 | return $this->toCSS(); |
| 68 | } |
| 69 | |
| 70 | // In an operation between two Dimensions, |
| 71 | // we default to the first Dimension's unit, |
| 72 | // so `1px + 2em` will yield `3px`. |
| 73 | |
| 74 | /** |
| 75 | * @param string $op |
| 76 | * @param self $other |
| 77 | */ |
| 78 | public function operate( $op, $other ) { |
| 79 | $value = $this->_operate( $op, $this->value, $other->value ); |
| 80 | $unit = $this->unit->clone(); |
| 81 | |
| 82 | if ( $op === '+' || $op === '-' ) { |
| 83 | if ( !$unit->numerator && !$unit->denominator ) { |
| 84 | $unit = $other->unit->clone(); |
| 85 | if ( $this->unit->backupUnit ) { |
| 86 | $unit->backupUnit = $this->unit->backupUnit; |
| 87 | } |
| 88 | } elseif ( !$other->unit->numerator && !$other->unit->denominator ) { |
| 89 | // do nothing |
| 90 | } else { |
| 91 | $other = $other->convertTo( $this->unit->usedUnits() ); |
| 92 | |
| 93 | if ( Less_Parser::$options['strictUnits'] && $other->unit->toString() !== $unit->toCSS() ) { |
| 94 | throw new Less_Exception_Compiler( "Incompatible units. Change the units or use the unit function. Bad units: '" . $unit->toString() . "' and " . $other->unit->toString() . "'." ); |
| 95 | } |
| 96 | |
| 97 | $value = $this->_operate( $op, $this->value, $other->value ); |
| 98 | } |
| 99 | } elseif ( $op === '*' ) { |
| 100 | $unit->numerator = array_merge( $unit->numerator, $other->unit->numerator ); |
| 101 | $unit->denominator = array_merge( $unit->denominator, $other->unit->denominator ); |
| 102 | sort( $unit->numerator ); |
| 103 | sort( $unit->denominator ); |
| 104 | $unit->cancel(); |
| 105 | } elseif ( $op === '/' ) { |
| 106 | $unit->numerator = array_merge( $unit->numerator, $other->unit->denominator ); |
| 107 | $unit->denominator = array_merge( $unit->denominator, $other->unit->numerator ); |
| 108 | sort( $unit->numerator ); |
| 109 | sort( $unit->denominator ); |
| 110 | $unit->cancel(); |
| 111 | } |
| 112 | return new self( $value, $unit ); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * @param Less_Tree $other |
| 117 | * @return int|null |
| 118 | * @see less-2.5.3.js#Dimension.prototype.compare |
| 119 | */ |
| 120 | public function compare( $other ) { |
| 121 | if ( !$other instanceof self ) { |
| 122 | return null; |
| 123 | } |
| 124 | |
| 125 | if ( $this->unit->isEmpty() || $other->unit->isEmpty() ) { |
| 126 | $a = $this; |
| 127 | $b = $other; |
| 128 | } else { |
| 129 | $a = $this->unify(); |
| 130 | $b = $other->unify(); |
| 131 | if ( $a->unit->compare( $b->unit ) !== 0 ) { |
| 132 | return null; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | return Less_Tree::numericCompare( $a->value, $b->value ); |
| 137 | } |
| 138 | |
| 139 | public function unify() { |
| 140 | return $this->convertTo( [ 'length' => 'px', 'duration' => 's', 'angle' => 'rad' ] ); |
| 141 | } |
| 142 | |
| 143 | public function convertTo( $conversions ) { |
| 144 | $value = $this->value; |
| 145 | $unit = $this->unit->clone(); |
| 146 | |
| 147 | if ( is_string( $conversions ) ) { |
| 148 | $derivedConversions = []; |
| 149 | foreach ( Less_Tree_UnitConversions::$groups as $i ) { |
| 150 | if ( isset( Less_Tree_UnitConversions::${$i}[$conversions] ) ) { |
| 151 | $derivedConversions = [ $i => $conversions ]; |
| 152 | } |
| 153 | } |
| 154 | $conversions = $derivedConversions; |
| 155 | } |
| 156 | |
| 157 | foreach ( $conversions as $groupName => $targetUnit ) { |
| 158 | $group = Less_Tree_UnitConversions::${$groupName}; |
| 159 | |
| 160 | // numerator |
| 161 | foreach ( $unit->numerator as $i => $atomicUnit ) { |
| 162 | $atomicUnit = $unit->numerator[$i]; |
| 163 | if ( !isset( $group[$atomicUnit] ) ) { |
| 164 | continue; |
| 165 | } |
| 166 | |
| 167 | $value *= $group[$atomicUnit] / $group[$targetUnit]; |
| 168 | |
| 169 | $unit->numerator[$i] = $targetUnit; |
| 170 | } |
| 171 | |
| 172 | // denominator |
| 173 | foreach ( $unit->denominator as $i => $atomicUnit ) { |
| 174 | $atomicUnit = $unit->denominator[$i]; |
| 175 | if ( !isset( $group[$atomicUnit] ) ) { |
| 176 | continue; |
| 177 | } |
| 178 | |
| 179 | $value /= $group[$atomicUnit] / $group[$targetUnit]; |
| 180 | |
| 181 | $unit->denominator[$i] = $targetUnit; |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | $unit->cancel(); |
| 186 | |
| 187 | return new self( $value, $unit ); |
| 188 | } |
| 189 | } |