<?php
// ColourARGB.php
// Created: 2021-09-08
// Updated: 2022-01-03

namespace Index;

class ColourARGB extends ColourRGB {
    public function getAlphaRaw(): int {
        return ($this->raw >> 24) & 0xFF;
    }

    public function getAlpha(): float {
        return ((float)$this->getAlphaRaw() / 0xFF);
    }

    public function toString(): IString {
        return new AString(sprintf(
            'rgba(%d,%d,%d,%F)',
            $this->getRed(),
            $this->getGreen(),
            $this->getBlue(),
            round($this->getAlpha(), 3)
        ));
    }
}