Del\Image\Strategy\PngStrategy

Complexity

Total Complexity

6

Size/Duplication

Total Lines	56
Duplicated Lines	0 %

Test Coverage

Coverage

94.44%

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	save()	0	4	1
A	create()	0	3	1
A	getContentType()	0	3	1
A	handleTransparency()	0	15	2
A	render()	0	5	1

<?php


namespace Del\Image\Strategy;


class PngStrategy extends AbstractTransparentImage  implements ImageTypeStrategyInterface

{

    /**

     * @param string $filename

     * @return resource

     */

    public function create($filename)

    {

        return imagecreatefrompng($filename);

    }


    /**

     * @param resource $resource

     * @param string $filename

     * @param int $compression

     * @return void

     */

    public function save($resource, $filename, $compression)

    {

        unset($compression);

        imagepng($resource, $filename);

    }


    /**

     * @return string

     */

    public function getContentType()

    {

        return 'image/png';

    }


    /**

     * @param $resource

     */

    public function render($resource)

    {

        imagealphablending($resource, true);

        imagesavealpha($resource, true);

        imagepng($resource);

    }


    public function handleTransparency($newImage, $image)

    {

        // Get transparency color's index number

        $transparency = $this->getTransparencyIndex($image);


        // Is a strange index other than -1 set?

        if ($transparency >= 0) {


            // deal with alpha channels

            $this->prepWithExistingIndex($newImage, $image, $transparency);


        } else {


            // deal with alpha channels

            $this->prepTransparentPng($newImage);

        }

    }

}