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<?php |
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namespace Spatie\Color; |
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class Rgba implements Color |
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{ |
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/** @var int */ |
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protected $red, $green, $blue; |
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/** @var float */ |
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protected $alpha; |
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public function __construct(int $red, int $green, int $blue, float $alpha) |
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{ |
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Validate::rgbChannelValue($red, 'red'); |
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Validate::rgbChannelValue($green, 'green'); |
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Validate::rgbChannelValue($blue, 'blue'); |
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Validate::alphaChannelValue($alpha); |
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$this->red = $red; |
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$this->green = $green; |
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$this->blue = $blue; |
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$this->alpha = $alpha; |
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} |
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public static function fromString(string $string) |
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{ |
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Validate::rgbaColorString($string); |
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$matches = null; |
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preg_match('/rgba\( *(\d{1,3} *, *\d{1,3} *, *\d{1,3} *, *[0-1](\.\d{1,2})?) *\)/i', $string, $matches); |
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$channels = explode(',', $matches[1]); |
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[$red, $green, $blue, $alpha] = array_map('trim', $channels); |
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return new static($red, $green, $blue, $alpha); |
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} |
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public function red(): int |
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{ |
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return $this->red; |
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} |
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public function green(): int |
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{ |
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return $this->green; |
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} |
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public function blue(): int |
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{ |
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return $this->blue; |
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} |
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public function alpha(): float |
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{ |
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return $this->alpha; |
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} |
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public function toHex(): Hex |
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{ |
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return $this->toRgb()->toHex(); |
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} |
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public function toHsl(): Hsl |
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{ |
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[$hue, $saturation, $lightness] = Convert::rgbValueToHsl( |
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$this->red, |
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$this->green, |
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$this->blue |
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); |
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return new Hsl($hue, $saturation, $lightness); |
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} |
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public function toHsla(float $alpha = 1): Hsla |
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{ |
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[$hue, $saturation, $lightness] = Convert::rgbValueToHsl( |
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$this->red, |
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$this->green, |
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$this->blue |
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); |
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return new Hsla($hue, $saturation, $lightness, $alpha); |
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} |
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public function toRgb(): Rgb |
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{ |
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return new Rgb($this->red, $this->green, $this->blue); |
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} |
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public function toRgba(float $alpha = 1): self |
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{ |
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return new self($this->red, $this->green, $this->blue, $alpha); |
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} |
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public function __toString(): string |
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{ |
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$alpha = number_format($this->alpha, 2); |
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return "rgba({$this->red},{$this->green},{$this->blue},{$alpha})"; |
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} |
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} |
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spatie /
color
Loading history...
This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.