<?php
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namespace app\common\service\qrcode;
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use Grafika\Color;
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use Grafika\Grafika;
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use Endroid\QrCode\QrCode;
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use app\common\exception\BaseException;
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class BranchActivityService extends Base
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{
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// 活动信息
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private $activity;
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// 用户id
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private $user_id;
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private $user;
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// 来源，微信小程序，公众号
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private $source;
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// 小程序码链接
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private $page = 'pages/branch/activity/detail/detail';
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/**
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* 构造方法
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*/
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public function __construct($activity, $user, $source)
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{
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parent::__construct();
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// 活动信息
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$this->activity = $activity;
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// 当前用户id
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$this->user_id = $user ? $user['user_id'] : 0;
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$this->user = $user;
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//来源
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$this->source = $source;
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}
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/**
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* 获取核销二维码
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* @return mixed
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*/
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public function getVerifyImage()
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{
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// 保存目录
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$savePath = $this->getPosterPath('verify');
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// 删除目录下的文件
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if(!$this->is_empty_dir($savePath)) {
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$this->deleteDir(substr($savePath, 0, -1));
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}
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// mkdir($savePath, 0755, true);
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if ($this->source == 'wx') {
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// 下载小程序码
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$scene = "activity_id:{$this->activity['activity_id']},user_verify:1";
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$fileName = $this->saveBranchActivityQrcodeToDir($this->activity['app_id'], 'pages/branch/activity/detail/detail', $savePath, $scene);
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} else if ($this->source == 'mp' || $this->source == 'h5'){
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$fileName = $this->saveBranchActivityVerifyMpQrcodeToDir('h5/pages/branch/activity/detail/detail',$savePath, $this->activity['activity_id'], $this->activity['app_id']);
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}
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if (!$fileName) {
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throw new BaseException(['msg' => '下载失败, 文件不存在']);
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}
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return $this->getVerifyUrl($fileName);
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// header('Content-Type: image/png');
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// header('Content-disposition: attachment; filename='. $this->activity['name'] .'_'. $this->source . '.png');
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// readfile($fullPath);
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// header('Content-Length: ' .filesize($fullPath));
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}
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/**
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* 分享海报
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* @return mixed
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*/
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public function getImage()
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{
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// 判断海报图文件存在则直接返回url
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// if (file_exists($this->getPosterPath() . $this->getPosterName())) {
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// return $this->getPosterUrl();
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// }
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// 小程序id
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$appId = $this->activity['app_id'];
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// 二维码区域背景
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$mark_bg = __DIR__ . '/resource/activity_mark.png';
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// 默认海报背景图
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$backdrop = __DIR__ . '/resource/activity_bg.png';
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// 如果上传了活动海报图
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if ($this->activity['pic_id']) {
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$backdrop = $this->saveTempImage($appId, $this->activity['pic']['file_path'], 'activity');
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}
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// 用户头像
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if ($this->user['avatarUrl']) {
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$avatar = $this->saveTempImage($appId, $this->user['avatarUrl'], 'avatar');
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} else {
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$avatar = base_url() . 'image/user/avatar.png';
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}
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$qrcode = null;
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if($this->source == 'wx'){
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// 小程序码参数
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$scene = "activity_id:{$this->activity['activity_id']},uid:" . ($this->user_id ?: '');
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// // 下载小程序码
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// $qrcode = $this->saveQrcode($appId, $scene, $this->page);
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// 下载小程序码
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$qrcode = $this->saveBranchActivityQrcodeToDir($this->activity['app_id'], 'pages/branch/activity/detail/detail', $this->getPosterPath(), $scene);
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}else if($this->source == 'mp' || $this->source == 'h5'){
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$scene = "gid:{$this->activity['activity_id']},uid:" . ($this->user_id ?: '');
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$qrcode = new QrCode(base_url().'h5/pages/activity/detail/detail?activity_id='.$this->activity['activity_id'].'&app_id='.$appId.'&referee_id='.$this->user_id ?: '');
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$qrcode = $this->saveMpQrcode($qrcode, $appId, $scene, 'image_mp');
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}
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// 拼接海报图
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return $this->savePoster($backdrop, $mark_bg, $avatar, $qrcode);
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}
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/**
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* 拼接海报图
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*/
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private function savePoster($backdrop, $mark_bg, $avatar, $qrcode)
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{
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// 实例化图像编辑器
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$editor = Grafika::createEditor(['Gd']);
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// 字体文件路径
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$fontPath = Grafika::fontsDir() . '/' . 'st-heiti-light.ttc';
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// 打开海报背景图
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$editor->open($backdropImage, $backdrop);
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// 打开活动图片
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$editor->open($markImage, $mark_bg);
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// 重设活动图片宽高
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$editor->resizeExact($backdropImage, 750, 1250);
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// 活动图片添加到背景图
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$editor->blend($backdropImage, $markImage, 'normal', 1.0, 'top-left', 0, 0);
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// 活动名称处理换行
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$fontSize = 22;
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$activityName = $this->wrapText($fontSize, 0, $fontPath, '邀您参加“'. $this->activity['name'] . '”', 460, 2);
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// 写入活动名称
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$editor->text($backdropImage, $activityName, $fontSize, 228, 1092, new Color('#000000'), $fontPath);
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// 生成圆形用户头像
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$this->circular($avatar, $avatar);
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// 打开用户头像
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$editor->open($avatarImage, $avatar);
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// 重设活动图片宽高
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$editor->resizeExact($avatarImage, 45, 45);
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// 头像添加到背景图
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$editor->blend($backdropImage, $avatarImage, 'normal', 1.0, 'top-left', 228, 1026);
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// 添加用户名称
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$user_name = $this->user['nickName'] ?: '匿名用户';
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$editor->text($backdropImage, $user_name, 22, 288, 1036, new Color('#333333'), $fontPath);
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// 打开小程序码
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$editor->open($qrcodeImage, $qrcode);
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// 重设小程序码宽高
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$editor->resizeExact($qrcodeImage, 148, 148);
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// 小程序码添加到背景图
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$editor->blend($backdropImage, $qrcodeImage, 'normal', 1.0, 'top-left', 60, 1020);
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// 保存图片
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$editor->save($backdropImage, $this->getPosterPath() . $this->getPosterName());
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return $this->getPosterUrl();
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}
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/**
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* 处理文字超出长度自动换行
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*/
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private function wrapText($fontsize, $angle, $fontface, $string, $width, $max_line = null)
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{
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// 这几个变量分别是 字体大小, 角度, 字体名称, 字符串, 预设宽度
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$content = "";
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// 将字符串拆分成一个个单字 保存到数组 letter 中
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$letter = [];
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for ($i = 0; $i < mb_strlen($string, 'UTF-8'); $i++) {
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$letter[] = mb_substr($string, $i, 1, 'UTF-8');
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}
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$line_count = 0;
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foreach ($letter as $l) {
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$testbox = imagettfbbox($fontsize, $angle, $fontface, $content . ' ' . $l);
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// 判断拼接后的字符串是否超过预设的宽度
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if (($testbox[2] > $width) && ($content !== "")) {
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$line_count++;
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if ($max_line && $line_count >= $max_line) {
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$content = mb_substr($content, 0, -1, 'UTF-8') . "...";
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break;
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}
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$content .= "\n";
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}
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$content .= $l;
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}
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return $content;
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}
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/**
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* 海报图文件路径
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*/
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private function getPosterPath($type = '')
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{
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$path = $type ? "branch/activity_{$type}_{$this->activity['activity_id']}/" : '';
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// 保存路径
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$tempPath = root_path('public') . 'temp' . '/' . $this->activity['app_id'] . '/' . $path . $this->source. '/';
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!is_dir($tempPath) && mkdir($tempPath, 0755, true);
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return $tempPath;
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}
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/**
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* 海报图文件名称
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*/
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private function getPosterName()
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{
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return 'activity_' . md5("{$this->user_id}_{$this->activity['activity_id']}") . '.png';
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}
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/**
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* 海报图url
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*/
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private function getPosterUrl()
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{
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return \base_url() . 'temp/' . $this->activity['app_id'] . '/' .$this->source . '/' . $this->getPosterName() . '?t=' . time();
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}
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/**
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* 核销码url
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*/
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private function getVerifyUrl($fileName)
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{
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$path = "branch/activity_verify_{$this->activity['activity_id']}/";
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return \base_url() . 'temp/' . $this->activity['app_id'] . '/' .$path . $this->source . '/' . $fileName . '?t=' . time();
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}
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/**
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* 生成圆形图片
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*/
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private function circular($imgpath, $saveName = '')
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{
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$srcImg = imagecreatefromstring(file_get_contents($imgpath));
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$w = imagesx($srcImg);
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$h = imagesy($srcImg);
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$w = $h = min($w, $h);
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$newImg = imagecreatetruecolor($w, $h);
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// 这一句一定要有
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imagesavealpha($newImg, true);
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// 拾取一个完全透明的颜色,最后一个参数127为全透明
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$bg = imagecolorallocatealpha($newImg, 255, 255, 255, 127);
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imagefill($newImg, 0, 0, $bg);
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$r = $w / 2; //圆半径
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for ($x = 0; $x < $w; $x++) {
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for ($y = 0; $y < $h; $y++) {
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$rgbColor = imagecolorat($srcImg, $x, $y);
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if (((($x - $r) * ($x - $r) + ($y - $r) * ($y - $r)) < ($r * $r))) {
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imagesetpixel($newImg, $x, $y, $rgbColor);
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}
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}
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}
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// 输出图片到文件
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imagepng($newImg, $saveName);
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// 释放空间
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imagedestroy($srcImg);
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imagedestroy($newImg);
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}
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private function is_empty_dir($fp)
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{
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if(!file_exists($fp)){
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return false;
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}
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$H = @ opendir($fp);
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$i=0;
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while($_file=readdir($H)){
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$i++;
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}
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closedir($H);
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if($i>2){
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return false;
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}else{
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return true;
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}
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}
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/**
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* 删除当前目录及其目录下的所有目录和文件
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* @param string $path 待删除的目录
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* @note $path路径结尾不要有斜杠/(例如:正确[$path='./static/image'],错误[$path='./static/image/'])
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*/
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private function deleteDir($path) {
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if (is_dir($path)) {
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//扫描一个目录内的所有目录和文件并返回数组
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$dirs = scandir($path);
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foreach ($dirs as $dir) {
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//排除目录中的当前目录(.)和上一级目录(..)
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if ($dir != '.' && $dir != '..') {
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//如果是目录则递归子目录，继续操作
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$sonDir = $path.'/'.$dir;
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if (is_dir($sonDir)) {
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//递归删除
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$this->deleteDir($sonDir);
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//目录内的子目录和文件删除后删除空目录
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@rmdir($sonDir);
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} else {
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//如果是文件直接删除
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@unlink($sonDir);
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}
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}
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}
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@rmdir($path);
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}
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}
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}
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