Proyectos de Subversion LeadersLinked - Backend

<?php
namespace LeadersLinked\Library;


class Image 
{
    
    /**
     *
     * @var \LeadersLinked\Library\Image
     */
    private static $_instance;
    
    
    /**
     *
     * @var array
     */
    private $config;

     /**
     * 
     * @param array $config
     */
    private function __construct($config) 
    {
        $this->config       = $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;
    }
    

   
    
    /**
     * 
     * @param string $source
     * @param string $target_filename
     * @param number $target_width
     * @param number $target_height
     * @param boolean $crop_to_dimensions
     * @return boolean
     */
    public function uploadProcessChangeSize($source, $target_filename, $target_width, $target_height,  $crop_to_dimensions)
    {
        $temp_filename = '';
       
        
        try {

            $data = file_get_contents($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 = 'data' . DIRECTORY_SEPARATOR . 'tmp' . DIRECTORY_SEPARATOR . $target_filename;
                imagepng($new_image, $temp_filename);

                
                
            } else {
                $temp_filename = '';
            }
            
        }
        catch (\Throwable $e)
        {
            
            $temp_filename = '';
            
        }
        
        @unlink($source);
        return $temp_filename;
    }
    
    /**
     * 
     * @param string $source
     * @param string $target_filename
     * @return boolean
     */
    public function uploadProcessWithOutChangeSize($source, $target_filename)
    {
        $temp_filename = '';
 
        try {
            $data = file_get_contents($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);
                
                
       
                
                $temp_filename = 'data' . DIRECTORY_SEPARATOR . 'tmp' . DIRECTORY_SEPARATOR . $target_filename;
                imagepng($new_image, $temp_filename);
                
                
                
            } else {
                $temp_filename = '';
            }
            
        }
        catch (\Throwable $e)
        {
            
            $temp_filename = '';
            
        }
        
        @unlink($source);
        return $temp_filename;
    
    }
}