<?php
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namespace app\common\service\qrcode;
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use app\common\model\settings\Setting as SettingModel;
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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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class RoomService extends Base
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{
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// 房间信息
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private $room;
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// 来源，微信小程序，公众号
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private $source;
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// 分享用户信息
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private $user;
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// 小程序码链接
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//private $pages = 'pages/pagesLive/live/live';
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private $pages = 'pages/index/index';
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/**
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* 构造方法
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*/
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public function __construct($room, $user, $source)
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{
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parent::__construct();
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// 商品信息
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$this->room = $room;
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//来源
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$this->source = $source;
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$this->user = $user;
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}
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/**
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* @return mixed
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*/
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public function getImage()
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{
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// 判断海报图文件存在则直接返回url
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if (file_exists($this->getPosterPath())) {
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return $this->getPosterUrl();
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}
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// 小程序id
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$appId = $this->room['app_id'];
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// 商品海报背景图
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$backdrop = __DIR__ . '/resource/room_bg.png';
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// 下载推广图
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$shareUrl = $this->saveTempImage($appId, $this->room['share']['file_path'], 'temp');
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// 2. 下载用户头像
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$avatarUrl = $this->saveTempImage($appId, $this->room['user']['avatarUrl'], 'avatar');
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// 3. 下载分享用户头像
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$shareAvatarUrl = $this->saveTempImage($appId, $this->user['avatarUrl'], 'avatar');
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$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 = "rid:{$this->room['room_id']}";
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// 下载小程序码
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$qrcode = $this->saveQrcode($appId, $scene, $this->pages);
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}else if($this->source == 'mp' || $this->source == 'h5'){
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$scene = "rid:{$this->room['room_id']}";
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$qrcode = new QrCode(base_url().'h5/'.$this->pages.'?roomId='.$this->room['room_id'].'&app_id='.$appId);
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$qrcode = $this->saveMpQrcode($qrcode, $appId, $scene, 'image_mp');
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}else if($this->source == 'app'){
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$appshare = SettingModel::getItem('appshare');
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$down_url = '';
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//下载页
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if($appshare['bind_type'] == 1){
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$down_url = $appshare['down_url'];
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}else{
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$down_url = base_url(). "/index.php/api/user.useropen/invite?app_id=".$appId."&referee_id=" .$this->user['user_id'];
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}
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$scene = 'uid:' . $this->user['user_id'];
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$qrcode = new QrCode($down_url);
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$qrcode = $this->saveMpQrcode($qrcode, $appId, $scene, 'image_app');
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}
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// 拼接海报图
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return $this->savePoster($backdrop, $shareUrl, $qrcode, $avatarUrl, $shareAvatarUrl);
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}
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/**
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* 拼接海报图
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*/
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private function savePoster($backdrop, $shareUrl, $qrcode, $avatarUrl, $shareAvatarUrl)
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{
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// 实例化图像编辑器
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$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, $backdrop);
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// 生成圆形用户头像
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$this->circular($avatarUrl, $avatarUrl);
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// 打开用户头像
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$editor->open($avatarImage, $avatarUrl);
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// 重设用户头像宽高
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$avatarWidth = 110;
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$editor->resizeExact($avatarImage, $avatarWidth, $avatarWidth);
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// 用户头像添加到背景图
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$editor->blend($backdropImage, $avatarImage, 'normal', 1.0, 'top-left', 30, 30);
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// 写入用户昵称
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$editor->text($backdropImage, $this->room['user']['nickName'], 28, 150, 50, new Color('#333333'), $fontPath);
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// 写入开播时间
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$editor->text($backdropImage, '开播时间：'.substr($this->room['create_time'], 0, 16), 24, 150, 100, new Color('#ff0000'), $fontPath);
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// 打开分享图
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$editor->open($shareImage, $shareUrl);
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// 重设分享图宽高
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$editor->resizeExact($shareImage, 690, 690);
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// 分享图添加到背景图
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$editor->blend($backdropImage, $shareImage, 'normal', 1.0, 'top-left', 30, 160);
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// 直播间名称处理换行
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$fontSize = 30;
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$productName = $this->wrapText($fontSize, 0, $fontPath, $this->room['name'], 680, 2);
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// 写入商品名称
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$editor->text($backdropImage, $productName, $fontSize, 30, 900, 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($qrcodeImage, 140, 140);
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// 小程序码添加到背景图
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$editor->blend($backdropImage, $qrcodeImage, 'normal', 1.0, 'top-left', 570, 914);
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//分享用户信息
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// 生成圆形用户头像
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$this->circular($shareAvatarUrl, $shareAvatarUrl);
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// 打开用户头像
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$editor->open($shareAvatarImage, $shareAvatarUrl);
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// 重设用户头像宽高
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$avatarWidth = 60;
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$editor->resizeExact($shareAvatarImage, $avatarWidth, $avatarWidth);
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// 用户头像添加到背景图
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$editor->blend($backdropImage, $shareAvatarImage, 'normal', 1.0, 'top-left', 30, 1000);
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// 写入用户昵称
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$editor->text($backdropImage, $this->user['nickName'].'向你推荐', 18, 100, 1020, new Color('#333333'), $fontPath);
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// 保存图片
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$editor->save($backdropImage, $this->getPosterPath());
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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 $content;
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}
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/**
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* 海报图文件路径
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*/
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private function getPosterPath()
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{
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// 保存路径
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$tempPath = root_path('public') . 'temp' . '/' . $this->room['app_id'] . '/' . $this->source. '/';
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!is_dir($tempPath) && mkdir($tempPath, 0755, true);
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return $tempPath . $this->getPosterName();
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}
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/**
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* 海报图文件名称
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*/
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private function getPosterName()
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{
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return 'room_' . md5("{$this->room['room_id']}}{$this->user['user_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/' . $this->room['app_id'] . '/' .$this->source . '/' . $this->getPosterName() . '?t=' . time();
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}
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/**
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* 生成圆形图片
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*/
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private function circular($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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}
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