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<?php |
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/** |
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* Trait implementation of Red-Green-Blue (RGB) colour format generation for generator services. |
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*/ |
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namespace CryptoManana\Core\Traits\Randomness; |
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use CryptoManana\Core\Traits\Randomness\RandomnessTrait as RandomnessSpecification; |
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/** |
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* Trait RgbOutputTrait - Reusable implementation of `RgbOutputInterface`. |
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* |
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* @see \CryptoManana\Core\Interfaces\Randomness\RgbOutputInterface The abstract specification. |
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* |
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* @package CryptoManana\Core\Traits\Randomness |
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* |
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* @mixin RandomnessSpecification |
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*/ |
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trait RgbOutputTrait |
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{ |
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/** |
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* Forcing the implementation of the software abstract randomness. |
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* |
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* {@internal Forcing the implementation of `AbstractRandomness`. }} |
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*/ |
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use RandomnessSpecification; |
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/** |
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* Internal method for converting RGB integer colours to HEX notations. |
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* |
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* @param array $rgbColour An array containing three integers between 0 and 255. |
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* |
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* @return string The HEX representation of the RGB colour pair. |
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*/ |
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protected function calculateRgbArrayToHexString(array $rgbColour) |
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{ |
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$pairCount = count($rgbColour); |
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for ($i = 0; $i < $pairCount; $i++) { |
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$rgbColour[$i] = ($rgbColour[$i] <= 15) ? '0' . dechex($rgbColour[$i]) : dechex($rgbColour[$i]); |
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} |
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return ($pairCount > 0) ? '#' . implode('', $rgbColour) : ''; |
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} |
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/** |
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* Generate a random Red-Green-Blue (RGB) colour combination using all colours. |
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* |
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* @param bool $toArray Flag to force array output instead of string (default => true). |
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* |
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* @return array|string Randomly generated RGB array or hexadecimal RGB color. |
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* @throws \Exception Validation errors. |
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*/ |
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public function getRgbColourPair($toArray = true) |
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{ |
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$rgb = [$this->getInt(0, 255), $this->getInt(0, 255), $this->getInt(0, 255)]; |
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return ($toArray) ? $rgb : $this->calculateRgbArrayToHexString($rgb); |
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} |
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/** |
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* Generate a random Red-Green-Blue (RGB) colour combination using only greyscale colours. |
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* |
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* @param bool $toArray Flag to force array output instead of string (default => true). |
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* |
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* @return array|string Randomly generated RGB array or hexadecimal RGB color. |
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* @throws \Exception Validation errors. |
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*/ |
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public function getRgbGreyscalePair($toArray = true) |
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{ |
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$grayChart = [ |
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[255, 255, 255], // white |
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[220, 220, 220], // gainsboro |
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[211, 211, 211], // lightgrey |
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[192, 192, 192], // silver |
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[169, 169, 169], // darkgray |
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[128, 128, 128], // gray |
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[105, 105, 105], // dimgray |
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[0, 0, 0] // black |
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]; |
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$rgb = $grayChart[$this->getInt(0, 255) % 8]; // A bit faster |
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return ($toArray) ? $rgb : $this->calculateRgbArrayToHexString($rgb); |
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} |
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/** |
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* Generate a random Red-Green-Blue (RGB) colour combination using only black&white colours. |
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* |
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* @param bool $toArray Flag to force array output instead of string (default => true). |
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* |
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* @return array|string Randomly generated RGB array or hexadecimal RGB color. |
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* @throws \Exception Validation errors. |
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*/ |
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public function getRgbBlackOrWhitePair($toArray = true) |
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{ |
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$rgb = $this->getBool() ? [0, 0, 0] : [255, 255, 255]; |
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return ($toArray) ? $rgb : $this->calculateRgbArrayToHexString($rgb); |
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} |
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} |
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