Proyectos de Subversion LeadersLinked - Backend

<?php

namespace LeadersLinked\Library;

class Image

{

    /**

     *

     * @var \LeadersLinked\Library\Image

     */

    private static $_instance;

    /**

     *

     * @var \LeadersLinked\Library\Storage

     */

    private $storage;

    /**

     *

     * @var array

     */

    private $config;

    /**

     *

     * @param array $config

     */

    private function __construct($config)

    {

        $this->config = $config;

        $this->storage = Storage::getInstance($config);

    }

    /**

     *

     * @param array $config

     * @return \LeadersLinked\Library\Image

     */

    public static function getInstance($config)

    {

        if(self::$_instance == null) {

            self::$_instance = new Image($config);

        }

        return self::$_instance;

    }

    /**

     *

     * @return \LeadersLinked\Library\Storage

     */

    public function getStorage()

    {

        return $this->storage;

    }

    /**

     *

     * @param string $source

     * @param string $target_path

     * @param string $target_code

     * @param string $target_filename

     * @param number $target_width

     * @param number $target_height

     * @param boolean $crop_to_dimensions

     * @param boolean $unlink_source

     * @return boolean

     */

    public function uploadImageChangeSize($source, $target_path, $target_code, $target_filename, $target_width, $target_height,  $crop_to_dimensions, $unlink_source)

    {

        try {

            $data = file_get_contents($source);

            if($unlink_source) {

                unlink($source);

            }

            $img = imagecreatefromstring($data);

            if($img) {

                list($source_width, $source_height) = getimagesize($source);

                if($crop_to_dimensions) {

                    $width_ratio = $target_width / $source_width;

                    $height_ratio = $target_height / $source_height;

                    if($width_ratio > $height_ratio) {

                        $resized_width = $target_width;

                        $resized_height = $source_height * $width_ratio;

                    } else {

                        $resized_height = $target_height;

                        $resized_width = $source_width * $height_ratio;

                    }

                } else {

                    $width_ratio = $target_width / $source_width;

                    $resized_width = $target_width;

                    $resized_height = $source_height * $width_ratio;

                    if($resized_height > $target_height) {

                        $height_ratio = $target_height / $resized_height;

                        $resized_height = $target_height;

                        $resized_width = $resized_width * $height_ratio;

                    }

                }

                $resized_width = round($resized_width);

                $resized_height = round($resized_height);

                $offset_width = round(($target_width - $resized_width) / 2);

                $offset_height = round(($target_height - $resized_height) / 2);

                $new_image = imageCreateTrueColor($target_width, $target_height);

                imageAlphaBlending($new_image, False);

                imageSaveAlpha($new_image, True);

                $transparent = imageColorAllocateAlpha($new_image, 0, 0, 0, 127);

                imagefill($new_image, 0, 0, $transparent);

                imageCopyResampled($new_image, $img , $offset_width, $offset_height, 0, 0, $resized_width, $resized_height, $source_width, $source_height);

                $temp_filename = sys_get_temp_dir() . DIRECTORY_SEPARATOR . $target_filename;

                imagepng($new_image, $temp_filename);

                $result = $this->storage->putFile($target_path, $target_code, $temp_filename);

                unlink($temp_filename);

                return $result;

            } else {

                return true;

            }

        }

        catch (\Throwable $e)

        {

            error_log($e->getTraceAsString());

            return false;

        }

    }

    /**

     *

     * @param string $source

     * @param string $target_path

     * @param string $target_code

     * @param string $target_filename

     * @param boolean $unlink_source

     * @return boolean

     */

    public function uploadImageRaw($source, $target_path, $target_code, $target_filename, $unlink_source)

    {

        try {

            $data = file_get_contents($source);

            if($unlink_source) {

                unlink($source);

            }

            $img = imagecreatefromstring($data);

            if($img) {

                list($source_width, $source_height) = getimagesize($source);

                $target_width = $source_width;

                $target_height =  $source_height;

                $width_ratio    = $target_width / $source_width;

                $height_ratio   = $target_height / $source_height;

                if($width_ratio > $height_ratio) {

                    $resized_width = $target_width;

                    $resized_height = $source_height * $width_ratio;

                } else {

                    $resized_height = $target_height;

                    $resized_width = $source_width * $height_ratio;

                }

                $resized_width = round($resized_width);

                $resized_height = round($resized_height);

                $offset_width = round(($target_width - $resized_width) / 2);

                $offset_height = round(($target_height - $resized_height) / 2);

                $new_image = imageCreateTrueColor($target_width, $target_height);

                imageAlphaBlending($new_image, False);

                imageSaveAlpha($new_image, True);

                $transparent = imageColorAllocateAlpha($new_image, 0, 0, 0, 127);

                imagefill($new_image, 0, 0, $transparent);

                imageCopyResampled($new_image, $img , $offset_width, $offset_height, 0, 0, $resized_width, $resized_height, $source_width, $source_height);

                $target = $target_path . DIRECTORY_SEPARATOR . $target_filename;

                if(file_exists($target)) {

                    @unlink($target);

                }

                $temp_filename = sys_get_temp_dir() . DIRECTORY_SEPARATOR . $target_filename;

                imagepng($new_image, $temp_filename);

                $result = $this->storage->putFile($target_path, $target_code, $temp_filename);

                unlink($temp_filename);

                return $result;

            }

            return true;

        }

        catch (\Throwable $e)

        {

            error_log($e->getTraceAsString());

            return false;

        }

    }

}