|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* |
|
4
|
|
|
* This file is part of the ILess |
|
5
|
|
|
* |
|
6
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
7
|
|
|
* file that was distributed with this source code. |
|
8
|
|
|
*/ |
|
9
|
|
|
|
|
10
|
|
|
namespace ILess\Node; |
|
11
|
|
|
|
|
12
|
|
|
use ILess\Context; |
|
13
|
|
|
use ILess\Node; |
|
14
|
|
|
use ILess\Output\OutputInterface; |
|
15
|
|
|
use ILess\Util\UnitConversion; |
|
16
|
|
|
|
|
17
|
|
|
/** |
|
18
|
|
|
* Dimension unit. |
|
19
|
|
|
*/ |
|
20
|
|
|
class UnitNode extends Node implements ComparableInterface |
|
21
|
|
|
{ |
|
22
|
|
|
/** |
|
23
|
|
|
* Length regular expression. |
|
24
|
|
|
*/ |
|
25
|
|
|
const LENGTH_REGEXP = '/px|em|%|in|cm|mm|pc|pt|ex/'; |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* Numerator. |
|
29
|
|
|
* |
|
30
|
|
|
* @var array |
|
31
|
|
|
*/ |
|
32
|
|
|
public $numerator = []; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* Denominator. |
|
36
|
|
|
* |
|
37
|
|
|
* @var array |
|
38
|
|
|
*/ |
|
39
|
|
|
public $denominator = []; |
|
40
|
|
|
|
|
41
|
|
|
/** |
|
42
|
|
|
* The backup unit to use when unit is empty. |
|
43
|
|
|
* |
|
44
|
|
|
* @var string |
|
45
|
|
|
*/ |
|
46
|
|
|
public $backupUnit; |
|
47
|
|
|
|
|
48
|
|
|
/** |
|
49
|
|
|
* Constructor. |
|
50
|
|
|
* |
|
51
|
|
|
* @param array $numerator |
|
52
|
|
|
* @param array $denominator |
|
53
|
|
|
* @param string $backupUnit |
|
54
|
|
|
*/ |
|
55
|
|
|
public function __construct(array $numerator = [], array $denominator = [], $backupUnit = null) |
|
56
|
|
|
{ |
|
57
|
|
|
$this->numerator = $numerator; |
|
58
|
|
|
$this->denominator = $denominator; |
|
59
|
|
|
|
|
60
|
|
|
sort($this->numerator); |
|
61
|
|
|
sort($this->denominator); |
|
62
|
|
|
|
|
63
|
|
|
if ($backupUnit) { |
|
64
|
|
|
$this->backupUnit = $backupUnit; |
|
65
|
|
|
} elseif ($numerator) { |
|
66
|
|
|
$this->backupUnit = $numerator[0]; |
|
67
|
|
|
} |
|
68
|
|
|
} |
|
69
|
|
|
|
|
70
|
|
|
/** |
|
71
|
|
|
* Converts to string. |
|
72
|
|
|
* |
|
73
|
|
|
* @return string |
|
74
|
|
|
*/ |
|
75
|
|
|
public function toString() |
|
76
|
|
|
{ |
|
77
|
|
|
$returnStr = implode('*', $this->numerator); |
|
78
|
|
|
foreach ($this->denominator as $d) { |
|
79
|
|
|
$returnStr .= '/' . $d; |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
return $returnStr; |
|
83
|
|
|
} |
|
84
|
|
|
|
|
85
|
|
|
/** |
|
86
|
|
|
* {@inheritdoc} |
|
87
|
|
|
*/ |
|
88
|
|
|
public function compare(Node $other) |
|
89
|
|
|
{ |
|
90
|
|
|
// we can compare only units |
|
91
|
|
|
if ($other instanceof self) { |
|
92
|
|
|
return $this->is($other->toString()) ? 0 : null; |
|
93
|
|
|
} |
|
94
|
|
|
} |
|
95
|
|
|
|
|
96
|
|
|
/** |
|
97
|
|
|
* Take care about backup unit when cloning, see the constructor. |
|
98
|
|
|
*/ |
|
99
|
|
|
public function __clone() |
|
100
|
|
|
{ |
|
101
|
|
|
if (null === $this->backupUnit && count($this->numerator)) { |
|
102
|
|
|
$this->backupUnit = $this->numerator[0]; |
|
103
|
|
|
} |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
/** |
|
107
|
|
|
* Is the unit equal to $unitString? |
|
108
|
|
|
* |
|
109
|
|
|
* @param string $unitString |
|
110
|
|
|
* |
|
111
|
|
|
* @return bool |
|
112
|
|
|
*/ |
|
113
|
|
|
public function is($unitString) |
|
114
|
|
|
{ |
|
115
|
|
|
return strtoupper($this->toString()) === strtoupper($unitString); |
|
116
|
|
|
} |
|
117
|
|
|
|
|
118
|
|
|
/** |
|
119
|
|
|
* Is the unit length unit? |
|
120
|
|
|
* |
|
121
|
|
|
* @return bool |
|
122
|
|
|
*/ |
|
123
|
|
|
public function isLength() |
|
124
|
|
|
{ |
|
125
|
|
|
$css = $this->toCSS(new Context()); |
|
126
|
|
|
|
|
127
|
|
|
return (bool) preg_match(self::LENGTH_REGEXP, $css); |
|
128
|
|
|
} |
|
129
|
|
|
|
|
130
|
|
|
/** |
|
131
|
|
|
* Is the unit angle unit? |
|
132
|
|
|
* |
|
133
|
|
|
* @return bool |
|
134
|
|
|
*/ |
|
135
|
|
|
public function isAngle() |
|
136
|
|
|
{ |
|
137
|
|
|
$angle = UnitConversion::getGroup('angle'); |
|
138
|
|
|
|
|
139
|
|
|
return isset($angle[$this->toCSS(new Context())]); |
|
140
|
|
|
} |
|
141
|
|
|
|
|
142
|
|
|
/** |
|
143
|
|
|
* Is the unit empty? |
|
144
|
|
|
* |
|
145
|
|
|
* @return bool |
|
146
|
|
|
*/ |
|
147
|
|
|
public function isEmpty() |
|
148
|
|
|
{ |
|
149
|
|
|
return count($this->numerator) === 0 && count($this->denominator) === 0; |
|
150
|
|
|
} |
|
151
|
|
|
|
|
152
|
|
|
/** |
|
153
|
|
|
* Is singular? |
|
154
|
|
|
* |
|
155
|
|
|
* @return bool |
|
156
|
|
|
*/ |
|
157
|
|
|
public function isSingular() |
|
158
|
|
|
{ |
|
159
|
|
|
return count($this->numerator) <= 1 && count($this->denominator) == 0; |
|
160
|
|
|
} |
|
161
|
|
|
|
|
162
|
|
|
public function usedUnits() |
|
163
|
|
|
{ |
|
164
|
|
|
$result = []; |
|
165
|
|
|
foreach (UnitConversion::getGroups() as $groupName) { |
|
166
|
|
|
$group = UnitConversion::getGroup($groupName); |
|
167
|
|
|
for ($i = 0; $i < count($this->numerator); ++$i) { |
|
|
|
|
|
|
168
|
|
|
$atomicUnit = $this->numerator[$i]; |
|
169
|
|
|
if (isset($group[$atomicUnit]) && !isset($result[$groupName])) { |
|
170
|
|
|
$result[$groupName] = $atomicUnit; |
|
171
|
|
|
} |
|
172
|
|
|
} |
|
173
|
|
|
for ($i = 0; $i < count($this->denominator); ++$i) { |
|
|
|
|
|
|
174
|
|
|
$atomicUnit = $this->denominator[$i]; |
|
175
|
|
|
if (isset($group[$atomicUnit]) && !isset($result[$groupName])) { |
|
176
|
|
|
$result[$groupName] = $atomicUnit; |
|
177
|
|
|
} |
|
178
|
|
|
} |
|
179
|
|
|
} |
|
180
|
|
|
|
|
181
|
|
|
return $result; |
|
182
|
|
|
} |
|
183
|
|
|
|
|
184
|
|
|
public function cancel() |
|
185
|
|
|
{ |
|
186
|
|
|
$counter = []; |
|
187
|
|
|
|
|
188
|
|
|
for ($i = 0; $i < count($this->numerator); ++$i) { |
|
|
|
|
|
|
189
|
|
|
$atomicUnit = $this->numerator[$i]; |
|
190
|
|
|
$counter[$atomicUnit] = (isset($counter[$atomicUnit]) ? $counter[$atomicUnit] : 0) + 1; |
|
191
|
|
|
} |
|
192
|
|
|
|
|
193
|
|
|
for ($i = 0; $i < count($this->denominator); ++$i) { |
|
|
|
|
|
|
194
|
|
|
$atomicUnit = $this->denominator[$i]; |
|
195
|
|
|
$counter[$atomicUnit] = (isset($counter[$atomicUnit]) ? $counter[$atomicUnit] : 0) - 1; |
|
196
|
|
|
} |
|
197
|
|
|
|
|
198
|
|
|
$this->numerator = []; |
|
199
|
|
|
$this->denominator = []; |
|
200
|
|
|
|
|
201
|
|
|
foreach ($counter as $atomicUnit => $count) { |
|
202
|
|
|
if ($count > 0) { |
|
203
|
|
|
for ($i = 0; $i < $count; ++$i) { |
|
204
|
|
|
$this->numerator[] = $atomicUnit; |
|
205
|
|
|
} |
|
206
|
|
|
} elseif ($count < 0) { |
|
207
|
|
|
for ($i = 0; $i < -$count; ++$i) { |
|
208
|
|
|
$this->denominator[] = $atomicUnit; |
|
209
|
|
|
} |
|
210
|
|
|
} |
|
211
|
|
|
} |
|
212
|
|
|
|
|
213
|
|
|
sort($this->numerator); |
|
214
|
|
|
sort($this->denominator); |
|
215
|
|
|
} |
|
216
|
|
|
|
|
217
|
|
|
/** |
|
218
|
|
|
* {@inheritdoc} |
|
219
|
|
|
*/ |
|
220
|
|
|
public function generateCSS(Context $context, OutputInterface $output) |
|
221
|
|
|
{ |
|
222
|
|
|
if (count($this->numerator) === 1) { |
|
223
|
|
|
$output->add($this->numerator[0]); |
|
224
|
|
|
} elseif (!$context->strictUnits && $this->backupUnit) { |
|
225
|
|
|
$output->add($this->backupUnit); |
|
226
|
|
|
} elseif (!$context->strictUnits && count($this->denominator)) { |
|
227
|
|
|
$output->add($this->denominator[0]); |
|
228
|
|
|
} |
|
229
|
|
|
} |
|
230
|
|
|
|
|
231
|
|
|
/** |
|
232
|
|
|
* Convert to string. |
|
233
|
|
|
* |
|
234
|
|
|
* @return string |
|
235
|
|
|
*/ |
|
236
|
|
|
public function __toString() |
|
237
|
|
|
{ |
|
238
|
|
|
return $this->toString(); |
|
239
|
|
|
} |
|
240
|
|
|
} |
|
241
|
|
|
|
If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: