优化画图工具类,添加合并图片的方法

     */

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

    {

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

        // excel画图中下载图片时对图片名做urlencode处理,防止中文名不能正常画图片的bug

        $filename = urlencode(trim(pathinfo($url, PATHINFO_FILENAME)));

        $filename = trim(pathinfo($url, PATHINFO_FILENAME));

        $ext = strtolower(pathinfo($url, PATHINFO_EXTENSION));

        $filename = "$filename.$ext";

        $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

            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);

            $file = curl_exec($ch);

            curl_close($ch);

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

            $resource = fopen($filePath, 'a');

            fwrite($resource, $file);

            fclose($resource);

        }

    private function parseUrl($url)

    {

        if (!preg_match('/%[0-9A-Z]{2}/', $url)) {

            $url = rawurlencode($url);

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

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

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

        }

        return $url;

    }

    /**

        return $res ? $imgNewPath : false;

    }

    /**

     * 拼图

     * @param $imgPathList

     * @return bool|string

     */

    public function mergeImages($imgPathList)

    {

        $maxW = $maxH = 0;

        $filenameList = [];

        $imageList = [];

        foreach ($imgPathList as $k => $path) {

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

            $imgPathInfo = pathinfo($path);

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

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

            [$w, $h] = getimagesize($path); // 图片大小

            $imageList[$k] = [

                'path' => $path,

                'filename' => $filename,

                'ext' => $ext,

                'w' => $w,

                'h' => $h,

            ];

            $filenameList[] = $filename;

            $maxW += $w;

            if ($maxH < $h) {

                $maxH = $h;

            }

        }

        $filenameList = collect($filenameList)->unique()->sort()->toArray();

        $filename = implode('_', $filenameList);

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

        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 . '.png';

        if (file_exists($imgNewPath)) {

            return $imgNewPath;

        }

        // 黑色背景图片

        $im = @imagecreatetruecolor($maxW, $maxH) 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);

        // 循环画图片

        $dstX = 0;

        foreach ($imageList as $item) {

            $resource = imagecreatefromstring(file_get_contents($item['path']));

            imagecopy($im, $resource, $dstX, 0, 0, 0, $item['w'], $item['h']);

            $dstX += $item['w'];

        }

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

        imagedestroy($im);

        return $res ? $imgNewPath : false;

    }

    /**

     * 画图片

     * @param string $path 图片路径

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

            }

            $drawing = new Drawing();

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

            $drawing->setPath($path)->setCoordinates($p)->setHeight($h)->setOffsetX(1)->setOffsetY(1)->setWorksheet($sheet);

        } catch (Exception $e) {

            put_log($e->getMessage());

        }