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 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);
        }
}