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<?php |
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namespace Spatie\Color; |
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class Hex implements Color |
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{ |
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/** @var string */ |
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protected $red, $green, $blue; |
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public function __construct(string $red, string $green, string $blue) |
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{ |
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Validate::hexChannelValue($red, 'red'); |
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Validate::hexChannelValue($green, 'green'); |
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Validate::hexChannelValue($blue, 'blue'); |
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$this->red = strtolower($red); |
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$this->green = strtolower($green); |
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$this->blue = strtolower($blue); |
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} |
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public static function fromString(string $string) |
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{ |
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Validate::hexColorString($string); |
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list($red, $green, $blue) = str_split(ltrim($string, '#'), 2); |
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return new static($red, $green, $blue); |
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} |
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public function red(): string |
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{ |
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return $this->red; |
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} |
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public function green(): string |
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{ |
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return $this->green; |
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} |
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public function blue(): string |
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{ |
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return $this->blue; |
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} |
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public function toHex(): Hex |
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{ |
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return new self($this->red, $this->green, $this->blue); |
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} |
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public function toRgb(): Rgb |
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{ |
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return new Rgb( |
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Convert::hexChannelToRgbChannel($this->red), |
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Convert::hexChannelToRgbChannel($this->green), |
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Convert::hexChannelToRgbChannel($this->blue) |
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); |
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} |
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public function toRgba(float $alpha = 1): Rgba |
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{ |
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return $this->toRgb()->toRgba($alpha); |
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} |
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public function __toString(): string |
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{ |
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return "#{$this->red}{$this->green}{$this->blue}"; |
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} |
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} |
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Only declaring a single property per statement allows you to later on add doc comments more easily.
It is also recommended by PSR2, so it is a common style that many people expect.