1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
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);
}
}
|
