PrintingColorAdminStyle.php

<?php


namespace AppBundle\DataObject;


use Pimcore\Model\DataObject\PrintingColor;
use Pimcore\Model\Element\AdminStyle;

class PrintingColorAdminStyle extends AdminStyle
{
    public function __construct($element)
    {
        parent::__construct($element);
        if (!($element instanceof PrintingColor)) {
            return;
        }
        /** @var $element PrintingColor */
        $rgb = $element->getRbgPreview();
        $filename = "printing_color_{$rgb->getHex(false, false)}.png";
        if (!file_exists(PIMCORE_ASSET_DIRECTORY . "/printing_colors")) {
            mkdir(PIMCORE_ASSET_DIRECTORY . "/printing_colors");
        }
        $path = PIMCORE_ASSET_DIRECTORY . "/printing_colors/$filename";
        if (!file_exists($path)) {
            $im = imagecreatetruecolor(20, 20);
            $bg = imagecolorallocate($im, $rgb->getR(), $rgb->getG(), $rgb->getB());
            imagefilledrectangle($im, 0, 0, 20, 20, $bg);
            imagepng($im, $path);
            imagedestroy($im);
        }
        $this->elementIcon = "/printing_colors/$filename";
        $this->elementIconClass = null;
    }
}