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<?php |
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namespace EaselDrawing; |
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class Color |
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{ |
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private $red; |
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private $green; |
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private $blue; |
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/** |
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* Color constructor. |
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* @param $red |
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* @param $green |
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* @param $blue |
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*/ |
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public function __construct(int $red, int $green, int $blue) |
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{ |
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$this->red = max(0, min(255, $red)); |
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$this->green = max(0, min(255, $green)); |
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$this->blue = max(0, min(255, $blue)); |
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} |
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public static function newFromArray(array $values) |
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{ |
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$rgb = [0, 0, 0]; |
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$values = array_values($values); |
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foreach (range(0, 2) as $index) { |
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if (isset($values[$index])) { |
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$rgb[$index] = $values[$index]; |
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} |
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} |
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return new Color($rgb[0], $rgb[1], $rgb[2]); |
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} |
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public static function newFromString(string $value) |
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{ |
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$value = strtolower(substr($value, 0, 6)); |
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if (strlen($value) == 3) { |
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$value = substr($value, 0, 1) . substr($value, 0, 1) |
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. substr($value, 1, 1) . substr($value, 1, 1) |
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. substr($value, 2, 1) . substr($value, 2, 1); |
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} |
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if (! preg_match('/^[[:xdigit:]]{6}$/', $value)) { |
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throw new \InvalidArgumentException('A color must contain 3 or 6 hexadecimal characters'); |
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} |
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$rgb = []; |
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foreach (range(0, 2) as $index) { |
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$rgb[$index] = substr($value, $index * 2, 2); |
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} |
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return new Color(hexdec($rgb[0]), hexdec($rgb[1]), hexdec($rgb[2])); |
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} |
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public function getRed(): int |
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{ |
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return $this->red; |
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} |
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public function getGreen(): int |
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{ |
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return $this->green; |
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} |
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public function getBlue(): int |
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{ |
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return $this->blue; |
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} |
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public function getRGB() |
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{ |
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return [$this->red, $this->blue, $this->green]; |
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} |
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public function getHex(): string |
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{ |
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return $this->intToHex($this->red) |
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. $this->intToHex($this->green) |
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. $this->intToHex($this->blue); |
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} |
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private function intToHex($value): string |
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{ |
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return sprintf('%02s', dechex($value)); |
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} |
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} |
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driftking301 /
EaselDrawing
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