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1 |
1 | <?php |
2 | /** |
3 | * Pop PHP Framework (https://www.popphp.org/) |
4 | * |
5 | * @link https://github.com/popphp/popphp-framework |
6 | * @author Nick Sagona, III <dev@noladev.com> |
7 | * @copyright Copyright (c) 2009-2025 NOLA Interactive, LLC. |
8 | * @license https://www.popphp.org/license New BSD License |
9 | */ |
10 | |
11 | /** |
12 | * @namespace |
13 | */ |
14 | namespace Pop\Color\Color; |
15 | |
16 | use OutOfRangeException; |
17 | |
18 | /** |
19 | * Pop Color HSL color class |
20 | * |
21 | * @category Pop |
22 | * @package Pop\Color |
23 | * @author Nick Sagona, III <dev@noladev.com> |
24 | * @copyright Copyright (c) 2009-2025 NOLA Interactive, LLC. |
25 | * @license https://www.popphp.org/license New BSD License |
26 | * @version 1.0.2 |
27 | */ |
28 | class Hsl extends AbstractColor implements \ArrayAccess |
29 | { |
30 | |
31 | /** |
32 | * H value |
33 | * @var int |
34 | */ |
35 | protected int $h = 0; |
36 | |
37 | /** |
38 | * S value |
39 | * @var int |
40 | */ |
41 | protected int $s = 0; |
42 | |
43 | /** |
44 | * L value |
45 | * @var int |
46 | */ |
47 | protected int $l = 0; |
48 | |
49 | /** |
50 | * Alpha value |
51 | * @var ?float |
52 | */ |
53 | protected ?float $a = null; |
54 | |
55 | /** |
56 | * Constructor |
57 | * |
58 | * Instantiate the CSS HSL color object |
59 | * |
60 | * @param int|string $h |
61 | * @param int|string $s |
62 | * @param int|string $l |
63 | * @param float|string|null $a |
64 | */ |
65 | public function __construct(int|string $h, int|string $s, int|string $l, float|string|null $a = null) |
66 | { |
67 | $this->setH($h); |
68 | $this->setS($s); |
69 | $this->setL($l); |
70 | if ($a !== null) { |
71 | $this->setA($a); |
72 | } |
73 | } |
74 | |
75 | /** |
76 | * Set H value |
77 | * |
78 | * @param int|string $h |
79 | * @throws OutOfRangeException |
80 | * @return self |
81 | */ |
82 | public function setH(int|string $h): self |
83 | { |
84 | $h = (int)$h; |
85 | if (($h > 360) || ($h < 0)) { |
86 | throw new OutOfRangeException('Error: The value of $h must be between 0 and 360.'); |
87 | } |
88 | $this->h = $h; |
89 | return $this; |
90 | } |
91 | |
92 | /** |
93 | * Set S value |
94 | * |
95 | * @param int|string $s |
96 | * @throws OutOfRangeException |
97 | * @return self |
98 | */ |
99 | public function setS(int|string $s): self |
100 | { |
101 | $s = (int)$s; |
102 | if (($s > 100) || ($s < 0)) { |
103 | throw new OutOfRangeException('Error: The value of $s must be between 0 and 100.'); |
104 | } |
105 | $this->s = $s; |
106 | return $this; |
107 | } |
108 | |
109 | /** |
110 | * Set L value |
111 | * |
112 | * @param int|string $l |
113 | * @throws OutOfRangeException |
114 | * @return self |
115 | */ |
116 | public function setL(int|string $l): self |
117 | { |
118 | $l = (int)$l; |
119 | if (($l > 100) || ($l < 0)) { |
120 | throw new OutOfRangeException('Error: The value of $l must be between 0 and 100.'); |
121 | } |
122 | $this->l = $l; |
123 | return $this; |
124 | } |
125 | |
126 | /** |
127 | * Set A value |
128 | * |
129 | * @param float|string $a |
130 | * @throws OutOfRangeException |
131 | * @return self |
132 | */ |
133 | public function setA(float|string $a): self |
134 | { |
135 | $a = (float)$a; |
136 | if (($a > 1) || ($a < 0)) { |
137 | throw new OutOfRangeException('Error: The value of $l must be between 0 and 1.'); |
138 | } |
139 | $this->a = $a; |
140 | return $this; |
141 | } |
142 | |
143 | /** |
144 | * Get H value |
145 | * |
146 | * @return int |
147 | */ |
148 | public function getH(): int |
149 | { |
150 | return $this->h; |
151 | } |
152 | |
153 | /** |
154 | * Get S value |
155 | * |
156 | * @return int |
157 | */ |
158 | public function getS(): int |
159 | { |
160 | return $this->s; |
161 | } |
162 | |
163 | /** |
164 | * Get L value |
165 | * |
166 | * @return int |
167 | */ |
168 | public function getL(): int |
169 | { |
170 | return $this->l; |
171 | } |
172 | |
173 | /** |
174 | * Get A value |
175 | * |
176 | * @return float|null |
177 | */ |
178 | public function getA(): float|null |
179 | { |
180 | return $this->a; |
181 | } |
182 | |
183 | /** |
184 | * Determine if the color object has an alpha value |
185 | * |
186 | * @return bool |
187 | */ |
188 | public function hasA(): bool |
189 | { |
190 | return ($this->a !== null); |
191 | } |
192 | |
193 | /** |
194 | * Determine if the color object has an alpha value (alias) |
195 | * |
196 | * @return bool |
197 | */ |
198 | public function hasAlpha(): bool |
199 | { |
200 | return ($this->a !== null); |
201 | } |
202 | |
203 | /** |
204 | * Convert to RGB |
205 | * |
206 | * @return Rgb |
207 | */ |
208 | public function toRgb(): Rgb |
209 | { |
210 | $s = $this->s / 100; |
211 | $v = $this->l / 100; |
212 | |
213 | if ($this->s == 0) { |
214 | $r = round($v * 255); |
215 | $g = round($v * 255); |
216 | $b = round($v * 255); |
217 | } else { |
218 | $h = $this->h / 360; |
219 | $h = $h * 6; |
220 | if ($h == 6) { |
221 | $h = 0; |
222 | } |
223 | |
224 | $i = floor($h); |
225 | $v1 = $v * (1 - $s); |
226 | $v2 = $v * (1 - ($s * ($h - $i))); |
227 | $v3 = $v * (1 - ($s * (1 - ($h - $i)))); |
228 | |
229 | switch ($i) { |
230 | case 0: |
231 | $r = $v; |
232 | $g = $v3; |
233 | $b = $v1; |
234 | break; |
235 | case 1: |
236 | $r = $v2; |
237 | $g = $v; |
238 | $b = $v1; |
239 | break; |
240 | case 2: |
241 | $r = $v1; |
242 | $g = $v; |
243 | $b = $v3; |
244 | break; |
245 | case 3: |
246 | $r = $v1; |
247 | $g = $v; |
248 | $b = $v3; |
249 | break; |
250 | case 4: |
251 | $r = $v3; |
252 | $g = $v1; |
253 | $b = $v; |
254 | break; |
255 | default: |
256 | $r = $v; |
257 | $g = $v1; |
258 | $b = $v2; |
259 | } |
260 | |
261 | $r = round($r * 255); |
262 | $g = round($g * 255); |
263 | $b = round($b * 255); |
264 | } |
265 | |
266 | return new Rgb($r, $g, $b, $this->a); |
267 | } |
268 | |
269 | /** |
270 | * Convert to hex |
271 | * |
272 | * @return Hex |
273 | */ |
274 | public function toHex(): Hex |
275 | { |
276 | return $this->toRgb()->toHex(); |
277 | } |
278 | |
279 | /** |
280 | * Convert to array |
281 | * |
282 | * @param bool $assoc |
283 | * @return array |
284 | */ |
285 | public function toArray(bool $assoc = true): array |
286 | { |
287 | $hsl = []; |
288 | |
289 | if ($assoc) { |
290 | $hsl['h'] = $this->h; |
291 | $hsl['s'] = $this->s . '%'; |
292 | $hsl['l'] = $this->l . '%'; |
293 | if ($this->a !== null) { |
294 | $hsl['a'] = $this->a; |
295 | } |
296 | } else { |
297 | $hsl[] = $this->h; |
298 | $hsl[] = $this->s . '%'; |
299 | $hsl[] = $this->l . '%'; |
300 | if ($this->a !== null) { |
301 | $hsl[] = $this->a; |
302 | } |
303 | } |
304 | |
305 | return $hsl; |
306 | } |
307 | |
308 | /** |
309 | * Convert to readable string |
310 | * |
311 | * @param ?string $format |
312 | * @return string |
313 | */ |
314 | public function render(?string $format = null): string |
315 | { |
316 | if ($format == self::COMMA) { |
317 | return $this->h . ', ' . $this->s . ', ' . $this->l . (!empty($this->a) ? ', ' . $this->a : ''); |
318 | } else if ($format == self::CSS) { |
319 | return (($this->a !== null) ? 'hsla(' : 'hsl(') . implode(', ', $this->toArray()) . ')'; |
320 | } else if ($format == self::PERCENT) { |
321 | $rgb = $this->toRgb(); |
322 | return $rgb->render($format); |
323 | } else { |
324 | return $this->h . ' ' . $this->s . ' ' . $this->l . (!empty($this->a) ? ' ' . $this->a : ''); |
325 | } |
326 | } |
327 | |
328 | /** |
329 | * Return CSS-formatted string |
330 | * |
331 | * @return string |
332 | */ |
333 | public function __toString(): string |
334 | { |
335 | return $this->render(self::CSS); |
336 | } |
337 | |
338 | /** |
339 | * Magic method to set the color value |
340 | * |
341 | * @param string $name |
342 | * @param mixed $value |
343 | * @throws Exception |
344 | * @return void |
345 | */ |
346 | public function __set(string $name, mixed $value): void |
347 | { |
348 | $this->offsetSet($name, $value); |
349 | } |
350 | |
351 | /** |
352 | * Magic method to return the color value |
353 | * |
354 | * @param string $name |
355 | * @throws Exception |
356 | * @return mixed |
357 | */ |
358 | public function __get(string $name): mixed |
359 | { |
360 | return $this->offsetGet($name); |
361 | } |
362 | |
363 | /** |
364 | * Magic method to return whether the color value exists |
365 | * |
366 | * @param string $name |
367 | * @return bool |
368 | */ |
369 | public function __isset(string $name): bool |
370 | { |
371 | return $this->offsetExists($name); |
372 | } |
373 | |
374 | /** |
375 | * Magic method to unset color value |
376 | * |
377 | * @param string $name |
378 | * @throws Exception |
379 | * @return void |
380 | */ |
381 | public function __unset(string $name): void |
382 | { |
383 | throw new Exception('You cannot unset the properties of this color object.'); |
384 | } |
385 | |
386 | /** |
387 | * ArrayAccess offsetExists |
388 | * |
389 | * @param mixed $offset |
390 | * @return bool |
391 | */ |
392 | public function offsetExists(mixed $offset): bool |
393 | { |
394 | return (($offset == 'h') || ($offset == 's') || ($offset == 'l') || ($offset == 'a')); |
395 | } |
396 | |
397 | /** |
398 | * ArrayAccess offsetGet |
399 | * |
400 | * @param mixed $offset |
401 | * @throws Exception |
402 | * @return mixed |
403 | */ |
404 | public function offsetGet(mixed $offset): mixed |
405 | { |
406 | switch ($offset) { |
407 | case 'h': |
408 | return $this->getH(); |
409 | break; |
410 | case 's': |
411 | return $this->getS(); |
412 | break; |
413 | case 'l': |
414 | return $this->getL(); |
415 | break; |
416 | case 'a': |
417 | return $this->getA(); |
418 | break; |
419 | default: |
420 | throw new Exception("Error: You can only use 'h', 's', 'l' or 'a'."); |
421 | } |
422 | } |
423 | |
424 | /** |
425 | * ArrayAccess offsetSet |
426 | * |
427 | * @param mixed $offset |
428 | * @param mixed $value |
429 | * @throws Exception |
430 | * @return void |
431 | */ |
432 | public function offsetSet(mixed $offset, mixed $value): void |
433 | { |
434 | switch ($offset) { |
435 | case 'h': |
436 | $this->setH($value); |
437 | break; |
438 | case 's': |
439 | $this->setS($value); |
440 | break; |
441 | case 'l': |
442 | $this->setL($value); |
443 | break; |
444 | case 'a': |
445 | $this->setA($value); |
446 | break; |
447 | default: |
448 | throw new Exception("Error: You can only use 'h', 's', 'l' or 'a'."); |
449 | } |
450 | } |
451 | |
452 | /** |
453 | * ArrayAccess offsetUnset |
454 | * |
455 | * @param mixed $offset |
456 | * @throws Exception |
457 | * @return void |
458 | */ |
459 | public function offsetUnset(mixed $offset): void |
460 | { |
461 | throw new Exception('You cannot unset the properties of this color object.'); |
462 | } |
463 | |
464 | } |