ImageSizeCalculator.php

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<?php

declare(strict_types=1);

namespace ILIAS\ResourceStorage\Flavour\Machine\DefaultMachines;

trait ImageSizeCalculator
{
    private function calculateWidthHeight(float $original_width, float $original_height, int $max_size): array
    {
        if ($original_width === $original_height) {
            return [$max_size, $max_size];
        }

        if ($original_width > $original_height) {
            $columns = $max_size;
            $rows = (float) ($max_size * $original_height / $original_width);
            return [$columns, $rows];
        }

        $columns = (float) ($max_size * $original_width / $original_height);
        $rows = $max_size;
        return [$columns, $rows];
    }

    private function calculateWidthHeightFromImage(\Imagick $original, int $max_size): array
    {
        return $this->calculateWidthHeight(
            $original->getImageWidth(),
            $original->getImageHeight(),
            $max_size
        );
    }
}