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<?php |
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declare(strict_types=1); |
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namespace AppUtils\RGBAColor\FormatsConverter; |
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use AppUtils\RGBAColor; |
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use AppUtils\RGBAColor\ColorException; |
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use AppUtils\RGBAColor\ColorFactory; |
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use AppUtils\RGBAColor\ColorChannel; |
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class HEXParser |
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{ |
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/** |
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* Converts the HEX color string to an 8-Bit color array. |
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* |
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* @param string $hex |
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* @param string $name |
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* @return RGBAColor |
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* |
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* @throws ColorException |
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* @see RGBAColor::ERROR_INVALID_HEX_LENGTH |
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*/ |
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public function parse(string $hex, string $name='') : RGBAColor |
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{ |
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$hex = ltrim($hex, '#'); // Remove the hash if present |
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$hex = strtoupper($hex); |
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$length = strlen($hex); |
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if($length === 3) |
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{ |
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return $this->parseHEX3($hex, $name); |
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} |
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if($length === 6) |
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{ |
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return $this->parseHEX6($hex, $name); |
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} |
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if ($length === 8) |
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{ |
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return $this->parseHEX8($hex, $name); |
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} |
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throw new ColorException( |
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'Invalid HEX color value.', |
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sprintf( |
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'The hex string [%s] has an invalid length ([%s] characters). '. |
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'It must be either 6 characters (RRGGBB) or 8 characters (RRGGBBAA) long.', |
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$hex, |
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$length |
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), |
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RGBAColor::ERROR_INVALID_HEX_LENGTH |
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); |
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} |
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/** |
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* Parses a three-letter HEX color string to a color array. |
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* |
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* @param string $hex |
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* @param string $name |
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* @return RGBAColor |
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*/ |
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private function parseHEX3(string $hex, string $name) : RGBAColor |
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{ |
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return ColorFactory::create( |
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ColorChannel::EightBit(hexdec(str_repeat($hex[0], 2))), |
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ColorChannel::EightBit(hexdec(str_repeat($hex[1], 2))), |
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ColorChannel::EightBit(hexdec(str_repeat($hex[2], 2))), |
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null, |
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$name |
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); |
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} |
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/** |
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* Parses a six-letter HEX color string to a color array. |
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* @param string $hex |
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* @param string $name |
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* @return RGBAColor |
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*/ |
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private function parseHEX6(string $hex, string $name) : RGBAColor |
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{ |
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return ColorFactory::create( |
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ColorChannel::EightBit(hexdec(substr($hex, 0, 2))), |
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ColorChannel::EightBit(hexdec(substr($hex, 2, 2))), |
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ColorChannel::EightBit(hexdec(substr($hex, 4, 2))), |
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null, |
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$name |
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); |
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} |
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/** |
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* Parses an eight-letter HEX color string (with alpha) to a color array. |
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* @param string $hex |
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* @param string $name |
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* @return RGBAColor |
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*/ |
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private function parseHEX8(string $hex, string $name) : RGBAColor |
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{ |
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return ColorFactory::create( |
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ColorChannel::EightBit(hexdec(substr($hex, 0, 2))), |
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ColorChannel::EightBit(hexdec(substr($hex, 2, 2))), |
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ColorChannel::EightBit(hexdec(substr($hex, 4, 2))), |
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ColorChannel::EightBit(hexdec(substr($hex, 6, 2))), |
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$name |
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); |
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} |
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} |
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Mistralys /
application-utils
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