Imagecow\Utils\SvgExtractor

Complexity

Total Complexity

8

Size/Duplication

Total Lines	61
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	17	3
A	get()	0	28	5

<?php

namespace Imagecow\Utils;

use Exception;
use Imagick;
use ImagickPixel;
use Imagecow;

/**
 * Simple class to convert a svg file to png
 * Requires Imagick.
 */
class SvgExtractor
{
    protected $image;

    /**
     * Contructor.
     *
     * @param string $filename The path of the svg file
     */
    public function __construct($filename)
    {
        if (!extension_loaded('imagick')) {
            throw new Exception('SvgExtractor needs imagick extension');
        }

        $image = new Imagick();
        $image->setBackgroundColor(new ImagickPixel('transparent'));

        if (!is_file($filename)) {
            throw new Exception("'$filename' is not a readable file");
        }

        $image->readImage($filename);

        $this->image = $image;
    }

    /**
     * Get the svg as an image.
     *
     * @return \Imagecow\Image
     */
    public function get($width = 0, $height = 0)
    {
        $imageWidth = $this->image->getImageWidth();
        $imageHeight = $this->image->getImageHeight();

        if ($width !== 0 && ($height === 0 || ($imageWidth / $width) > ($imageHeight / $height))) {
            $height = ceil(($width / $imageWidth) * $imageHeight);
        } elseif ($height !== 0) {
            $width = ceil(($height / $imageHeight) * $imageWidth);
        } else {
            $width = $imageWidth;
            $height = $imageHeight;
        }

        $image = new Imagick();
        $image->setBackgroundColor(new ImagickPixel('transparent'));
        $image->setResolution($width, $height);

        $blob = $this->image->getImageBlob();

        $blob = preg_replace('/<svg([^>]*) width="([^"]*)"/si', '<svg$1 width="'.$width.'px"', $blob);
        $blob = preg_replace('/<svg([^>]*) height="([^"]*)"/si', '<svg$1 height="'.$height.'px"', $blob);

        $image->readImageBlob($blob);
        $image->setImageFormat('png');

        return new Imagecow\Image(new Imagecow\Libs\Imagick($image));
    }
}