编写下载网络图片方法,在excel中画图片的方法

  "require": {

    "ext-json": "*",

    "ext-redis": "*",

    "ext-gd": "*",

    "ext-curl": "*",

    "hyperf/cache": "~1.1.0",

    "hyperf/framework": "~1.1.0",

    "hyperf/db-connection": "~1.1.0",

<?php

/**

 * Created by PhpStorm.

 * User: Zero

 * Date: 2020/7/27

 * Time: 11:44

 */

namespace Meibuyu\Micro\Tools;

use Exception;

use Hyperf\Contract\ConfigInterface;

use PhpOffice\PhpSpreadsheet\Worksheet\Drawing;

use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;

class Drawer

{

    /**

     * @var ConfigInterface

     */

    protected $config;

    private $rootPath;

    private $savePath = '';

    public function __construct()

    {

        $this->config = container(ConfigInterface::class);

        $this->rootPath = $this->config->get('server.settings.document_root', BASE_PATH . '/public');

    }

    private function parseImagePath($imagePath)

    {

        if (strstr($imagePath, 'http') !== false) {

            $imagePath = $this->downloadWebImage($imagePath);

        }

        return $imagePath;

    }

    /**

     * @param string $url

     * @param string $path

     * @return string

     */

    public function downloadWebImage($url, $path = null)

    {

        $filename = pathinfo($url, PATHINFO_BASENAME);

        $url = $this->parseUrl($url);

        $path = $this->rootPath . '/download/images/' . ($path ?: $this->savePath);

        if (!is_dir($path)) {

            // 判断路径是否存在,不存在,则创建

            mkdir($path, 0777, true);

        }

        $filePath = $path . '/' . $filename;

        if (!file_exists($filePath)) {

            $ch = curl_init();

            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 信任任何证书

            curl_setopt($ch, CURLOPT_URL, $url);

            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);

            $file = curl_exec($ch);

            curl_close($ch);

            $resource = fopen($path . '/' . $filename, 'a');

            fwrite($resource, $file);

            fclose($resource);

        }

        return $filePath;

    }

    private function parseUrl($url)

    {

        $url = rawurlencode($url);

        $url = str_replace("%3A", ":", $url);

        return str_replace("%2F", "/", $url);

    }

    /**

     * @param $imgPath

     * @param int $px

     * @return bool|string

     * @throws Exception

     */

    public function addBoard($imgPath, $px = 2)

    {

        $imgPath = $this->parseImagePath($imgPath);

        $imgPathInfo = pathinfo($imgPath);

        $filename = $imgPathInfo['filename']; // 图片名称

        $ext = $imgPathInfo['extension']; // 图片扩展名

        [$img_w, $img_h] = getimagesize($imgPath); // 图片大小

        $savePath = $this->rootPath . '/download/board';

        if (!is_dir($savePath)) {

            // 判断路径是否存在,不存在,则创建

            mkdir($savePath, 0777, true);

        }

        $imgNewPath = $savePath . '/' . $filename . '.' . $ext;

        if (file_exists($imgNewPath)) {

            return $imgNewPath;

        }

        switch ($ext) {

            case 'jpeg':

            case 'jpg':

                $img_create_func = 'imagecreatefromjpeg';

                $img_save_func = 'imagejpeg';

                break;

            case 'png':

                $img_create_func = 'imagecreatefrompng';

                $img_save_func = 'imagepng';

                break;

            case 'bmp':

                $img_create_func = 'imagecreatefrombmp';

                $img_save_func = 'imagebmp';

                break;

            case 'gif':

                $img_create_func = 'imagecreatefromgif';

                $img_save_func = 'imagegif';

                break;

            case 'vnd.wap.wbmp':

                $img_create_func = 'imagecreatefromwbmp';

                $img_save_func = 'imagewbmp';

                break;

            case 'xbm':

                $img_create_func = 'imagecreatefromxbm';

                $img_save_func = 'imagexbm';

                break;

            default:

                throw new Exception("图片类型不支持");

        }

        // 黑色背景图片

        $im = @imagecreatetruecolor(($img_w + $px), ($img_h + $px)) or die ("Cannot Initialize new GD image stream");

        // 为真彩色画布创建背景，再设置为透明

        $color = imagecolorallocate($im, 0, 0, 0);

        imagefill($im, 0, 0, $color);

        imageColorTransparent($im, $color);

        // 把图片放到黑色背景图片上。边框是1px

        $resource = $img_create_func($imgPath);

        imagecopy($im, $resource, $px / 2, $px / 2, 0, 0, $img_w, $img_h);

        $res = $img_save_func($im, $imgNewPath);

        imagedestroy($im);

        return $res ? $imgNewPath : false;

    }

    /**

     * 画图片

     * @param string $path 图片路径

     * @param int $h 图片高度

     * @param string $p 单元格索引

     * @param Worksheet $sheet

     * @param bool $addBoard

     */

    public function draw2Excel($path, $h, $p, $sheet, $addBoard = true)

    {

        try {

            $path = $this->parseImagePath($path);

            if ($addBoard) {

                $path = $this->addBoard($path);

            }

            $drawing = new Drawing();

            $drawing->setPath($path)->setCoordinates($p)->setHeight($h)->setWorksheet($sheet);

        } catch (Exception $e) {

            put_log($e->getMessage());

        }

    }

    public function setSavePath($path)

    {

        $this->savePath = $path;

    }

}