class.ilSystemStyleIcon.php

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<?php
include_once("Services/Style/System/classes/Icons/class.ilSystemStyleIconColorSet.php");


class ilSystemStyleIcon
{

    protected $path = "";

    protected $name = "";

    protected $type = "";

    protected $color_set = null;

    public function __construct($name, $path, $type)
    {
        $this->setName($name);
        $this->setType($type);
        $this->setPath($path);
    }


    public function changeColors(array $color_changes)
    {
        if ($this->getType() == "svg") {
            $icon = file_get_contents($this->getPath());
            foreach ($color_changes as $old_color => $new_color) {
                $icon = preg_replace('/' . $old_color . '/i', $new_color, $icon, -1);
            }
            file_put_contents($this->getPath(), $icon);
        }
        $this->extractColorSet();
    }

    public function getType()
    {
        return $this->type;
    }

    public function setType($type)
    {
        $this->type = $type;
    }

    public function getName()
    {
        return $this->name;
    }

    public function setName($name)
    {
        $this->name = $name;
    }


    public function __toString()
    {
        return $this->getName();
    }

    public function getPath()
    {
        return $this->path;
    }

    public function setPath($path)
    {
        $this->path = $path;
    }

    public function getDirRelToCustomizing()
    {
        return dirname(strstr($this->getPath(), 'global/skin'));
    }

    public function getColorSet()
    {
        if (!$this->color_set) {
            $this->extractColorSet();
        }
        return $this->color_set;
    }

    protected function extractColorSet()
    {
        $regex_for_extracting_color = '/(?<=#)[\dabcdef]{6}/i';

        $this->color_set = new ilSystemStyleIconColorSet();
        if ($this->getType() == "svg") {
            $icon_content = file_get_contents($this->getPath());
            $color_matches = [];
            preg_match_all($regex_for_extracting_color, $icon_content, $color_matches);
            if (is_array($color_matches) && is_array($color_matches[0])) {
                foreach ($color_matches[0] as $color_value) {
                    $numeric = strtoupper(str_replace("#", "", $color_value));
                    $color = new ilSystemStyleIconColor($numeric, $color_value, $numeric, $color_value);
                    $this->getColorSet()->addColor($color);
                }
            }
        }
    }

    public function setColorSet($color_set)
    {
        $this->color_set = $color_set;
    }

    public function usesColor($color_id)
    {
        return $this->getColorSet()->doesColorExist($color_id);
    }
}