公众号H5页面截屏并保存图片

其他 2020-03-06 12:50:16 阅读次数: 0

直接贴代码

html代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <link rel="stylesheet" href="css/style.css">
    <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>
    <!-- bluebird.js - 让所有浏览器都支持 ES6 Promise 对象 -->
    <script src="https://cdn.jsdelivr.net/bluebird/latest/bluebird.js"></script>
    <script src="https://cdn.bootcss.com/html2canvas/0.5.0-beta3/html2canvas.js"></script>
    <script type="text/javascript" src="js/qrcode.js"></script>
    <title>递易峰会</title>
</head>

<body class="body_wrap" id="body">
    <div class="content" id="content">
        <div class="head">
            <img class="icon" src="./img/ll.png" alt="">
            <span class="title">请选择您的身份</span>
            <img class="icon" src="./img/ll.png" alt="">
        </div>

        <!-- 身份选择 -->
        <div class="body" id="identity">
            <div class="item_wrap">
                <div class="item item_1">
                    <div class="item_left">
                        递易小伙伴
                    </div>
                    <div class="item_rgt">
                        <img class="item_img" src="./img/women.png" alt="" srcset="">
                    </div>
                </div>
            </div>
            <div class="item_wrap">
                <div class="item item_2">
                    <div class="item_left">
                        远道而来的贵宾
                    </div>
                    <div class="item_rgt">
                        <img class="item_img" src="./img/man.png" alt="" srcset="">
                    </div>
                </div>
            </div>
        </div>

        <!-- 手机信息填写 -->
        <div class="body write_msg" id="form_msg">
            <div class="form">
                <div class="form_item">
                    <div class="lab">姓名</div>
                    <input class="form_text" maxlength="11" id="userName" type="text" placeholder="请输入您的姓名">
                </div>
                <div class="form_item">
                    <div class="lab">手机号</div>
                    <input class="form_text" maxlength="11" id="userPhone" type="text" placeholder="输入您的手机号">
                    <button class="button" id="codebutton">发送验证码</button>
                </div>
                <div class="form_item">
                    <div class="lab">验证码</div>
                    <input class="form_text" id="code" maxlength="6" type="text" placeholder="输入您的验证码">
                </div>
                <div class="foot_btn">
                    <button class="submit_btn submit_2">确定并生成二维码</button>
                    <button class="submit_btn submit_1" id="submit">确定并生成二维码</button>
                </div>
            </div>
        </div>

        <!-- 生成二维码 -->
        <div class="qrcode_wrap">
            <div class="qrcode_item code_img">
                <div id="qrcode"></div>
            </div>
            <div class="qrcode_item">
                <p class="p1">请将二维码平放在高拍仪上进行扫描</p>
                <p class="p2">请您长按二维码生成整图再进行保存~~~</p>
            </div>
            <div class="qrcode_item item_logo">
                <img class="logo_img" src="./img/logo.png" alt="" srcset="">
            </div>
        </div>

        <!-- 提示弹框 -->
        <div class="tips">
            <div class="tips_title"></div>
        </div>
    </div>
    <div id="screen_img">
        <div class="img_title">请长按下图进行保存</div>
        <!-- <img id="close" src="img/close1.png" alt="" srcset=""> -->
    </div>
    <script src="js/index.js"></script>
    <script>
        $('#screen_img').hide()
        $(".code_img").on({ 
            touchstart: function(e) { 
                console.log('触摸开始', e)
                // 长按事件触发  
                timeOutEvent = setTimeout(function() {  
                    timeOutEvent = 0
                    screenShot()
                }, 500)
            },  
            touchmove: function(e) {  
                // console.log('触摸移动', e)
                clearTimeout(timeOutEvent);  
                timeOutEvent = 0;  
            },  
            touchend: function(e) {
                // console.log('触摸结束', e)
                clearTimeout(timeOutEvent);  
                if (timeOutEvent != 0) {  
                    // 点击事件   
                }  
                return false;
            }  
        })
        
        // 截屏
        function screenShot() {
            let shareContent = document.getElementById("body")
            html2canvas(shareContent, {
                allowTaint: true,
                taintTest: false,
                useCORS: true,      // 火狐浏览器添加项
                onrendered: canvas => {
                    $('#close').show()
                    let img = new Image
                    let html = '<img id="close" src="img/close1.png" alt="" srcset="">'
                    img.src = canvas.toDataURL('image/png')
                    $('#screen_img').append(img)
                    $('#screen_img').append(html)
                    $('#screen_img img').addClass('screenImg')
                    $('#screen_img').slideDown()

                    // 点击关闭按钮
                    $('#close').on('click', () => {
                        $('#screen_img').hide()
                        $('#close').remove()
                        $('.screenImg').remove()    // 清除图片
                    })
                }
            })
        }

    </script>
</body>
</html>

css代码

*{
    margin: 0;
    padding: 0;
    font-family: PingFangSC-Medium,PingFang SC;
}
body{
    width: 100vw;
    height: 100vh;
    transition: .7s;
    user-select: none;
}
a {
    cursor: pointer;
    color: rgb(85, 26, 139);
    text-decoration: underline;
}
.body_wrap{
    background: url(../img/bg1.png) no-repeat;
    background-size: cover;
}
.body_qrcode{
    background: url(../img/bg2.png) no-repeat;
    background-size: cover;
}
.item_wrap{
    min-height: 170px;
    display: flex;
    justify-content: center;
}
.content{
    padding-top: 60px;
    position: relative;
}
.head{
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 40px 0 30px;
}
.icon{
    width: 15px;
    height: 17px;
}
.title{
    font-size: 14px;
    font-weight: 600;
    color: rgba(255,255,255,1);
    padding: 0 9px;
}

.item{
    display: flex;
    align-items: center;
    width: 295px;
    height: 100px;
    transition: .5s;
}
.item_1{
    background: url(../img/dy.png) no-repeat;
    background-size: 100%;
    margin-bottom: 50px;
}
.item_2{
    background: url(../img/v.png) no-repeat;
    background-size: 100%;
}
.item_left{
    width: 50%;
    display: flex;
    justify-content: flex-start;
    color: #fff;
    font-size: 14px;
    padding-left: 30px;
}
.item_rgt{
    flex: 1;
    display: flex;
    justify-content: flex-end;
    padding-right: 30px;
}
.item_img{
    width: 50px;
    height: 50px;
}

/* active */
.item_active1{
    background: url(../img/dy_active.png) no-repeat;
    background-size: 100%;
    width: 313px;
    height: 120px;
}
.item_active2{
    background: url(../img/v_active.png) no-repeat;
    background-size: 100%;
    width: 313px;
    height: 120px;
}
.go_left{
    transform: translateX(-700px);
    transition: 1.2s;
}

/* 手机信息填写 */
.write_msg{
    background: #fff;
    border-radius: 10px;
    width: calc(100% - 60px);
    max-width: 315px;
    margin: auto;
    position: relative;
    box-shadow: 0 0 10px #1d1668;
    display: none;
}
.little_form{
    width: calc(100% - 30px);
}
.form{
    padding: 15px;
}
.form_item{
    height: 50px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #E9E9E9;
}
.lab{
    color: #222222;
    font-size: 14px;
    width: 43px;
    padding-right: 26px;
}
.form_text{
    flex: 1;
    border: none;
    outline: none;
    width: 104px;
}
.button{
    font-size: 12px;
    width: 80px;
    height: 27px;
    border-radius: 2px;
    color: #888;
    background: #e8e8e8;
    outline: none;
    border: none;
    padding: 5px 0;
}
.foot_btn{
    margin-top: 14px;
    text-align: center;
}
.submit_btn{
    border: none;
    font-size: 14px;
    color: #888;
    background: #e8e8e8;
    width: 215px;
    height: 40px;
    outline: none;
    border-radius: 2px;
}
.submit_1{
    display: none;
    background: #FCD100;
    color: #222222;
}

.color_btn{
    background: #FCD100;
    color: #222222;
}

/* 生成二维码 */
.qrcode_wrap{
    display: none;
}
.qrcode_item{
    text-align: center;
}
.item_logo{
    margin-top: 40px;
}
.code_img{
    width: 160px;
    height: 160px;
    margin: auto;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}
#qrcode{
    display: flex;
    justify-content: center;
    cursor: pointer;
}
.p1{
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 5px;
}
.p2{
    color: #aaa;
    font-size: 12px;
    text-align: center;
}
.logo_img{
    box-shadow: 0px 4px 10px 0px rgba(255,255,255,0.05);
    width: 238pt;
    height: 43pt;
}

/* 提示框 */
.tips {
    position: absolute;
    top: 15px;
    left: 0;
    right: 0;
    width: 90%;
    height: 50px;
    line-height: 50px;
    margin: auto;
    background: rgb(46, 44, 143);
    text-align: center;
    border-radius: 6px;
    color: #fff;
    font-size: 14px;
    display: none;
}
.snow{
    font-size: 12px;
}

/* 音乐 */
#audio{
    position: absolute;
    bottom: 0;
    width: 100%;
    display: none;
}

/* 截屏 */
#close{
    position: absolute;
    bottom: 70px;
    width: 30px;
    height: 30px;
    margin: auto;
    left: 0;
    right: 0;
}
.screenImg{
    width: 60%;
    border-radius: 10px;
}
#screen_img{
    height: 100%;
    display: flex;
    flex-flow: column;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.9);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 9999;
}
.img_title {
    color: #fff;
    font-size: 20px;
    padding: 20px;
}

js代码

$(() => {
    let width = $(window).width()
    let height = $(window).height()
    if(width <= 320) {
        $('.write_msg').addClass('little_form')
    }

    // 选择身份
    $('.item_1').click(() => {
        if($('.item_1').hasClass('item_active1')) {
            $('.item_1').removeClass('item_active1')
            $('.item_2').removeClass('item_active2')
        } else {
            $('.item_1').addClass('item_active1')
            $('.item_2').removeClass('item_active2')
        }
        setTimeout(() => {
            $('#identity').addClass('go_left')
            $('.title').html('请输入您的手机号')
            setTimeout(()=> {
                $('#identity').hide()
                $('#form_msg').slideDown()
            }, 300)
        }, 1000)
    })
    $('.item_2').click(() => {
        if($('.item_2').hasClass('item_active2')) {
            $('.item_1').removeClass('item_active1')
            $('.item_2').removeClass('item_active2')
        } else {
            $('.item_1').removeClass('item_active1')
            $('.item_2').addClass('item_active2')
        }
        setTimeout(() => {
            $('#identity').addClass('go_left')
            $('.title').html('请输入您的手机号')
            setTimeout(()=> {
                $('#identity').hide()
                $('#form_msg').slideDown()
            }, 300)
        }, 1000)
    })

    // 信息填写
    // 姓名输入
    $('#userName').bind('input propertychange', () => {
        checkWrite()
    })

    // 手机号输入
    let regMobile = /^[1]([3-9])[0-9]{9}$/
    $('#userPhone').bind('input propertychange', () => {
        $('#userPhone').val($('#userPhone').val().replace( /[^\d]/g,''))
        if($('#userPhone').val().length > 1 && $('#userPhone').val().split('')[0] != 1) {
            $('#userPhone').val('')
            tips('请输入正确的手机号')
        }
        if($('#userPhone').val().length >= 11 && regMobile.test($('#userPhone').val())) {
            $('#codebutton').addClass('color_btn')
        }
        checkWrite()
    })

    // 验证码输入
    $('#code').bind('input propertychange', () => {
        $('#code').val($('#code').val().replace( /[^\d]/g,''))
        checkWrite()
    })

    // 点击按钮获取验证码
    let timer       // 定时器
    let clock = 59  // 倒计时
    $('#codebutton').bind('click', () => {
        if(!$('#userName').val()) {
            $('#userName').focus()
            $('.tips').hide()
            tips('请输入姓名')
        } else if(!$('#userPhone').val()) {
            tips('请输入您的手机号')
        } else if($('#userPhone').val().length < 11 || !regMobile.test($('#userPhone').val())) {
            tips('请输入正确的手机号')
        } else {
            if(clock >= 59) {
                $('#codebutton').removeClass('color_btn')
                timer = setInterval(() => {
                    if(clock == 0) {
                        clock = 59
                        clearInterval(timer)
                        $('#codebutton').html('发送验证码')
                        $('#codebutton').addClass('color_btn')
                    } else {
                        clock--
                        $('#codebutton').html(clock + '秒')
                    }
                }, 1000)
            }
        }
    })

    // 点击提交按钮
    $('#submit').on('click', () => {
        $('#body').addClass('body_qrcode').removeClass('body_wrap')
        $('#form_msg').hide()
        $('.head').hide()
        makeQrCode()
    })
})

// 提示框
function tips(str) {
    $('.tips').hide()
    $('.tips_title').html(str)
    $('.tips').slideDown('slow')
    setTimeout(() => {
        $('.tips').fadeOut('slow')
    }, 3000)
}

// 检查是否输入完
function checkWrite() {
    if($('#userName').val() && $('#userPhone').val() && $('#code').val().length >= 6) {
        $('.submit_2').hide()
        $('#submit').show()
    }
}

function makeQrCode() {
    let qrcode = new QRCode(document.getElementById("qrcode"), {
        text: "这里是二维码内容",
        width: 140,
        height: 140,
        colorDark : "#000000",
        colorLight : "#ffffff",
        correctLevel : QRCode.CorrectLevel.H
    })
    $('.qrcode_wrap').slideDown()
}

效果图在这里插入图片描述

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转载自blog.csdn.net/qq_39024950/article/details/103896553
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