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✏️ Editing: ImageColor.php

<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */
declare (strict_types=1);
namespace RectorPrefix202411\Nette\Utils;

use RectorPrefix202411\Nette;
/**
 * Represent RGB color (0..255) with opacity (0..1).
 */
class ImageColor
{
    /**
     * @var int
     */
    public $red;
    /**
     * @var int
     */
    public $green;
    /**
     * @var int
     */
    public $blue;
    /**
     * @var float
     */
    public $opacity = 1;
    public static function rgb(int $red, int $green, int $blue, float $opacity = 1) : self
    {
        return new self($red, $green, $blue, $opacity);
    }
    /**
     * Accepts formats #RRGGBB, #RRGGBBAA, #RGB, #RGBA
     */
    public static function hex(string $hex) : self
    {
        $hex = \ltrim($hex, '#');
        $len = \strlen($hex);
        if ($len === 3 || $len === 4) {
            return new self((int) \hexdec($hex[0]) * 17, (int) \hexdec($hex[1]) * 17, (int) \hexdec($hex[2]) * 17, (int) \hexdec($hex[3] ?? 'F') * 17 / 255);
        } elseif ($len === 6 || $len === 8) {
            return new self((int) \hexdec($hex[0] . $hex[1]), (int) \hexdec($hex[2] . $hex[3]), (int) \hexdec($hex[4] . $hex[5]), (int) \hexdec(($hex[6] ?? 'F') . ($hex[7] ?? 'F')) / 255);
        } else {
            throw new Nette\InvalidArgumentException('Invalid hex color format.');
        }
    }
    private function __construct(int $red, int $green, int $blue, float $opacity = 1)
    {
        $this->red = $red;
        $this->green = $green;
        $this->blue = $blue;
        $this->opacity = $opacity;
        $this->red = \max(0, \min(255, $red));
        $this->green = \max(0, \min(255, $green));
        $this->blue = \max(0, \min(255, $blue));
        $this->opacity = \max(0, \min(1, $opacity));
    }
    public function toRGBA() : array
    {
        return [\max(0, \min(255, $this->red)), \max(0, \min(255, $this->green)), \max(0, \min(255, $this->blue)), \max(0, \min(127, (int) \round(127 - $this->opacity * 127)))];
    }
}

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