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| 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) 2009-2023 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 | * Image gray color class |
| 20 | * |
| 21 | * @category Pop |
| 22 | * @package Pop\Image |
| 23 | * @author Nick Sagona, III <dev@noladev.com> |
| 24 | * @copyright Copyright (c) 2009-2023 NOLA Interactive, LLC. |
| 25 | * @license https://www.popphp.org/license New BSD License |
| 26 | * @version 1.0.2 |
| 27 | */ |
| 28 | class Grayscale extends AbstractColor implements \ArrayAccess |
| 29 | { |
| 30 | |
| 31 | /** |
| 32 | * Gray |
| 33 | * @var float |
| 34 | */ |
| 35 | protected float $gray = 0; |
| 36 | |
| 37 | /** |
| 38 | * Constructor |
| 39 | * |
| 40 | * Instantiate a PERCENT Gray Color object |
| 41 | * |
| 42 | * @param mixed $gray 0 - 100 |
| 43 | */ |
| 44 | public function __construct(mixed $gray) |
| 45 | { |
| 46 | $this->setGray($gray); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Set the gray value |
| 51 | * |
| 52 | * @param mixed $gray |
| 53 | * @throws OutOfRangeException |
| 54 | * @return Grayscale |
| 55 | */ |
| 56 | public function setGray(mixed $gray): Grayscale |
| 57 | { |
| 58 | $gray = (float)$gray; |
| 59 | if (((int)$gray < 0) || ((int)$gray > 100)) { |
| 60 | throw new OutOfRangeException('Error: The value must be between 0 and 100'); |
| 61 | } else if ($gray < 1) { |
| 62 | $gray = (float)($gray * 100); |
| 63 | } |
| 64 | $this->gray = $gray; |
| 65 | return $this; |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Get the gray value |
| 70 | * |
| 71 | * @return float |
| 72 | */ |
| 73 | public function getGray(): float |
| 74 | { |
| 75 | return $this->gray; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Convert to CMYK |
| 80 | * |
| 81 | * @return Cmyk |
| 82 | */ |
| 83 | public function toCmyk(): Cmyk |
| 84 | { |
| 85 | return new Cmyk(0, 0, 0, $this->gray); |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Convert to RGB |
| 90 | * |
| 91 | * @return Rgb |
| 92 | */ |
| 93 | public function toRgb(): Rgb |
| 94 | { |
| 95 | return new Rgb($this->gray, $this->gray, $this->gray); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Convert to array |
| 100 | * |
| 101 | * @param bool $assoc |
| 102 | * @return array |
| 103 | */ |
| 104 | public function toArray(bool $assoc = true): array |
| 105 | { |
| 106 | $gray = []; |
| 107 | |
| 108 | if ($assoc) { |
| 109 | $gray['gray'] = $this->gray; |
| 110 | } else { |
| 111 | $gray[] = $this->gray; |
| 112 | } |
| 113 | |
| 114 | return $gray; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Convert to readable string |
| 119 | * |
| 120 | * @param ?string $format |
| 121 | * @return string |
| 122 | */ |
| 123 | public function render(?string $format = null): string |
| 124 | { |
| 125 | if (($format == self::CSS) || ($format == self::COMMA)) { |
| 126 | $rgb = $this->toRgb(); |
| 127 | return $rgb->render($format); |
| 128 | } else if ($format == self::PERCENT) { |
| 129 | return (string)round(($this->gray / 100), 2); |
| 130 | } else { |
| 131 | return (string)$this->gray; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Method to print the color object |
| 137 | * |
| 138 | * @return string |
| 139 | */ |
| 140 | public function __toString() |
| 141 | { |
| 142 | return $this->render(self::PERCENT); |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Magic method to set the color value |
| 147 | * |
| 148 | * @param string $name |
| 149 | * @param mixed $value |
| 150 | * @throws Exception |
| 151 | * @return void |
| 152 | */ |
| 153 | public function __set(string $name, mixed $value): void |
| 154 | { |
| 155 | $this->offsetSet($name, $value); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Magic method to return the color value |
| 160 | * |
| 161 | * @param string $name |
| 162 | * @throws Exception |
| 163 | * @return mixed |
| 164 | */ |
| 165 | public function __get(string $name): mixed |
| 166 | { |
| 167 | return $this->offsetGet($name); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Magic method to return whether the color value exists |
| 172 | * |
| 173 | * @param string $name |
| 174 | * @return bool |
| 175 | */ |
| 176 | public function __isset(string $name): bool |
| 177 | { |
| 178 | return $this->offsetExists($name); |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Magic method to unset color value |
| 183 | * |
| 184 | * @param string $name |
| 185 | * @throws Exception |
| 186 | * @return void |
| 187 | */ |
| 188 | public function __unset(string $name): void |
| 189 | { |
| 190 | throw new Exception('You cannot unset the properties of this color object.'); |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * ArrayAccess offsetExists |
| 195 | * |
| 196 | * @param mixed $offset |
| 197 | * @return bool |
| 198 | */ |
| 199 | public function offsetExists(mixed $offset): bool |
| 200 | { |
| 201 | return ($offset == 'gray'); |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * ArrayAccess offsetGet |
| 206 | * |
| 207 | * @param mixed $offset |
| 208 | * @throws Exception |
| 209 | * @return mixed |
| 210 | */ |
| 211 | public function offsetGet(mixed $offset): mixed |
| 212 | { |
| 213 | switch ($offset) { |
| 214 | case 'gray': |
| 215 | return $this->getGray(); |
| 216 | break; |
| 217 | default: |
| 218 | throw new Exception("Error: You can only use 'gray'."); |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * ArrayAccess offsetSet |
| 224 | * |
| 225 | * @param mixed $offset |
| 226 | * @param mixed $value |
| 227 | * @throws Exception |
| 228 | * @return void |
| 229 | */ |
| 230 | public function offsetSet(mixed $offset, mixed $value): void |
| 231 | { |
| 232 | switch ($offset) { |
| 233 | case 'gray': |
| 234 | $this->setGray($value); |
| 235 | break; |
| 236 | default: |
| 237 | throw new Exception("Error: You can only use 'gray'."); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * ArrayAccess offsetUnset |
| 243 | * |
| 244 | * @param mixed $offset |
| 245 | * @throws Exception |
| 246 | * @return void |
| 247 | */ |
| 248 | public function offsetUnset(mixed $offset): void |
| 249 | { |
| 250 | throw new Exception('You cannot unset the properties of this color object.'); |
| 251 | } |
| 252 | |
| 253 | } |