Proyectos de Subversion LeadersLinked - Services

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<?php
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namespace LeadersLinked\Library;
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class Image
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{
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    /**
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     *
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     * @var \LeadersLinked\Library\Image
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     */
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    private static $_instance;
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    /**
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     *
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     * @var array
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     */
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    private $config;
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     /**
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     *
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     * @param array $config
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     */
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    private function __construct($config)
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    {
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        $this->config       = $config;
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    }
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    /**
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     *
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     * @param array $config
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     * @return \LeadersLinked\Library\Image
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     */
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    public static function getInstance($config)
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    {
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        if(self::$_instance == null) {
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            self::$_instance = new Image($config);
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        }
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        return self::$_instance;
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    }
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    /**
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     *
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     * @param string $source
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     * @param string $target_filename
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     * @param number $target_width
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     * @param number $target_height
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     * @param boolean $crop_to_dimensions
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     * @return boolean
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     */
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    public function uploadProcessChangeSize($source, $target_filename, $target_width, $target_height,  $crop_to_dimensions)
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    {
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        $temp_filename = '';
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        try {
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            $data = file_get_contents($source);
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            $img = imagecreatefromstring($data);
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            if($img) {
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                list($source_width, $source_height) = getimagesize($source);
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                if($crop_to_dimensions) {
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                    $width_ratio = $target_width / $source_width;
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                    $height_ratio = $target_height / $source_height;
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                    if($width_ratio > $height_ratio) {
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                        $resized_width = $target_width;
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                        $resized_height = $source_height * $width_ratio;
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                    } else {
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                        $resized_height = $target_height;
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                        $resized_width = $source_width * $height_ratio;
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                    }
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                } else {
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                    $width_ratio = $target_width / $source_width;
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                    $resized_width = $target_width;
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                    $resized_height = $source_height * $width_ratio;
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                    if($resized_height > $target_height) {
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                        $height_ratio = $target_height / $resized_height;
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                        $resized_height = $target_height;
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                        $resized_width = $resized_width * $height_ratio;
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                    }
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                }
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                $resized_width = round($resized_width);
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                $resized_height = round($resized_height);
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                $offset_width = round(($target_width - $resized_width) / 2);
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                $offset_height = round(($target_height - $resized_height) / 2);
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                $new_image = imageCreateTrueColor($target_width, $target_height);
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                imageAlphaBlending($new_image, False);
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                imageSaveAlpha($new_image, True);
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                $transparent = imageColorAllocateAlpha($new_image, 0, 0, 0, 127);
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                imagefill($new_image, 0, 0, $transparent);
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                imageCopyResampled($new_image, $img , $offset_width, $offset_height, 0, 0, $resized_width, $resized_height, $source_width, $source_height);
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                $temp_filename = 'data' . DIRECTORY_SEPARATOR . 'tmp' . DIRECTORY_SEPARATOR . $target_filename;
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                imagepng($new_image, $temp_filename);
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            } else {
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                $temp_filename = '';
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            }
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        }
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        catch (\Throwable $e)
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        {
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            $temp_filename = '';
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        }
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        @unlink($source);
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        return $temp_filename;
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    }
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    /**
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     *
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     * @param string $source
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     * @param string $target_filename
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     * @return boolean
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     */
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    public function uploadProcessWithOutChangeSize($source, $target_filename)
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    {
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        $temp_filename = '';
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        try {
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            $data = file_get_contents($source);
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            $img = imagecreatefromstring($data);
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            if($img) {
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                list($source_width, $source_height) = getimagesize($source);
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                $target_width = $source_width;
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                $target_height =  $source_height;
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                $width_ratio    = $target_width / $source_width;
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                $height_ratio   = $target_height / $source_height;
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                if($width_ratio > $height_ratio) {
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                    $resized_width = $target_width;
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                    $resized_height = $source_height * $width_ratio;
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                } else {
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                    $resized_height = $target_height;
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                    $resized_width = $source_width * $height_ratio;
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                }
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                $resized_width = round($resized_width);
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                $resized_height = round($resized_height);
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                $offset_width = round(($target_width - $resized_width) / 2);
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                $offset_height = round(($target_height - $resized_height) / 2);
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                $new_image = imageCreateTrueColor($target_width, $target_height);
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                imageAlphaBlending($new_image, False);
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                imageSaveAlpha($new_image, True);
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                $transparent = imageColorAllocateAlpha($new_image, 0, 0, 0, 127);
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                imagefill($new_image, 0, 0, $transparent);
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                imageCopyResampled($new_image, $img , $offset_width, $offset_height, 0, 0, $resized_width, $resized_height, $source_width, $source_height);
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                $temp_filename = 'data' . DIRECTORY_SEPARATOR . 'tmp' . DIRECTORY_SEPARATOR . $target_filename;
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                imagepng($new_image, $temp_filename);
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            } else {
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                $temp_filename = '';
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            }
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        }
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        catch (\Throwable $e)
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        {
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            $temp_filename = '';
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        }
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        @unlink($source);
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        return $temp_filename;
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    }
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}