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编辑当前文件:/home/digitalh/panorama.panoramawholesale.com/app/libraries/Resizeimage.php

<?php

namespace App\libraries;

use DB;

/**
 * Filename :  Resizeimage.php
 * Purpose  :  This is for resize images, create thumbnail image, add image over another image (only for GIF[image type 1], JPG[image type 2], PNG[image type 3] format)
 * author   : Rasel Ahmed < raselsub2001@gmail.com > Cell : +8801964843191
 */
class Resizeimage
{
    public $name;

public $imagePath;

public $source;

public $success;

public $width;

public $height;

public $type;

public $thumb;

public $thumb_width;

public $thumb_height;

public function Resizeimage($original = false)
    {
        $this->imagePath = $original;
    }

/* function copyImage
    *
    *  @params imagePath
    *  @return
    */
    public function copyImage($name)
    {
        // reverse the Dir
        $name = strrev($name);

// Find the position of first '/'
        $slashPos = strpos($name, '/img/');

// Find the Substring of $name after first '/'
        $fileDir = substr($name, $slashPos);

// reverse the substring to check directory
        $fileDir = strrev($fileDir);

// Again reverse the string
        $name = strrev($name);

if (is_dir($fileDir)) {
            try {

copy($this->imagePath, $name);
            } catch (Exception $e) {
                echo 'Cannot copy image ' . $e->getMessage() . "\n";
            }
        }
    }

/* function delete
    *
    *  @param   none
    *  @return  none
    */
    public function delete()
    {
        try {
            unlink($this->imagepath);

return 1;
        } catch (Exception $e) {
            echo 'Cannot delete image' . $e->getMessage() . "\n";
        }
    }

/*
    * funcion createthumbNail
    *
    * @param  $name      - filename
    * @param  $maxWidth - Maximum height of the width image
    * @param  $maxHeight - Maximum height of the resized image
    * @param  $proportion - check if aspect ratio should maintain; boolean true for check , false otherwise
    * @param  $logo_file - Additional image to add over resized image
    * @param  $dest_x (x coordinate)  - postion of the additional image over resized image
    * @param  $dest_y (y coordinate)  - postion of the additional image over resized image
    * @return
    */

public function doResize($name, $maxWidth, $maxHeight, $proportion = true, $logo_file = false, $dest_x = 0, $dest_y = 0)
    {

$this->name = $name;

[$this->width, $this->height, $this->type] = getimagesize($this->imagePath);

$new_width  = $maxWidth;

$new_height = $maxHeight;

if ($proportion) {

if ($this->width > $maxWidth || $this->height > $maxHeight) {

$proportions = $this->width / $this->height;

if ($proportions > 1.25 || $proportions < 0.8) {
                    if ($this->width > $this->height) {
                        $new_width = $maxWidth;
                        $new_height = round($maxWidth / $proportions);
                    } else {
                        $new_height = $maxHeight;
                        $new_width = round($maxHeight * $proportions);
                    }
                }
            } else {
                $new_width  = $this->width;
                $new_height = $this->height;
            }
        }

switch ($this->type) {
            case 1:
                //Create a new image from file, GIF Format.
                $this->source = @ imagecreatefromgif($this->imagePath);

break;
            case 2:
                //Create a new image from file, JPEG Format.
                $this->source = imagecreatefromjpeg($this->imagePath);

break;
            case 3:
                //Create a new image from file, PNG Format.
                $this->source = imagecreatefrompng($this->imagePath);

break;
            default:
                $this->source = null;

}

if ($this->source) {
            $this->thumb_width  = $new_width;
            $this->thumb_height = $new_height;

//create an image identifier representing a black image of size x_size by y_size.
            $this->thumb = imagecreatetruecolor($this->thumb_width, $this->thumb_height);

// Resize the image
            imagecopyresized($this->thumb, $this->source, 0, 0, 0, 0, $this->thumb_width, $this->thumb_height, $this->width, $this->height);

// Add image over resized image
            if ($logo_file) {

$logoImage = imagecreatefromgif($logo_file); // Get logo information
                $logoW = imagesx($logoImage);
                $logoH = imagesy($logoImage);

imagecopy($this->thumb, $logoImage, $dest_x, $dest_y, 0, 0, $logoW, $logoH);
            }

// Save the image
            switch ($this->type) {
                case 1:
                    if (function_exists('imagegif')) {
                        $this->success = imagegif($this->thumb, $this->name);

break;
                    }
                    $this->success = imagejpeg($this->thumb, $this->name, 50);

break;
                case 2:
                    $this->success = imagejpeg($this->thumb, $this->name, 100);

break;
                case 3:
                    $this->success = imagepng($this->thumb, $this->name);

break;
            }
        }

// Copy the image
        $this->copyImage($this->name);
    }

/**
     * Purpose: check if the the uploaded file is of supported type
     *
     * @param  string  $type  -type of the uploaded file
     * @return bool $status -true if valid ,false otherwise
     */
    public static function checkTypeValidity($type)
    {
        switch ($type) {

case 'image/pjpeg': $status = true;

break;
            case 'image/jpeg': $status = true;

break;
            case 'image/jpg': $status = true;

break;
            case 'image/JPG': $status = true;

break;
            case 'image/JPEG': $status = true;

break;
            case 'image/png': $status = true;

break;
            case 'image/x-png': $status = true;

break;
            case 'image/gif': $status = true;

break;
            default: $status = false;

break;

}

return $status;
    }

public static function makeFileName($extension, $start_string = '')
    {
        $file_name = '';
        if ($extension[0] != '.') {
            $extension = '.' . $extension;
        }
        while (1) {
            $file_name = $start_string . rand(111, 999) . time() . $extension;
            $exist = DB::table('files')->where('filename', '=', $file_name)->get();
            if (count($exist) == 0) {
                break;
            }
        }

return $file_name;
    }
}

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