最近客户需要修改一个手机端合同签约样子，但是他们的合同内容是后端加载过来的，为了保留他们原有的功能，尽可能的让手机端的样子和PC端一致，我使用了css中的transform属性，因为他们合同的正常显示的宽度大概是900px，所以将外层的div进行transform的缩放，并且为了兼容高度用js重新计算一个transform缩放后的高度的，下面是大概的场景和解决方案
<style>
@media only screen and (max-width: 767px) {
/* 移动设备样式 */
.treary_box{
width: 900px;
transform-origin: top left;
transform: scale(0.37);
}
.cons{
display: inline-block; /* 用于包裹所有元素，但不撑开.height */
overflow: hidden;
}
}
.treary_name{font-size: 25px;text-align: center}
.treary_content{margin-top: 5px}
.treary_content img{max-width: 100%!important;}
.form_tip{font-size: 20px;text-align: center;color: red}
.my_form{margin-top: 15px}
.signature_tip{text-align: center;font-weight: bold;font-size: 18px}
.signature{background-color: #eeeeee;margin: 20px auto}
.signature_but_box{margin: 20px;height: 25px;}
.signature_but{height: 25px;width: 50%;float: left;}
.img_box{max-width: 95%;display: block;margin: 0 auto}
.n-default .msg-wrap{position: relative;}
/*.login-section{min-height: 550px}*/
.showproduct {
margin: 10px;
font-size: 18px;
}
span.txt.flex1 {
text-align: center;
}
.showproduct {
background: #fff;
font-family: 'Microsoft Yahei';
padding: .25rem .3rem;
position: relative;
}
.popupBox{background: rgba(0, 0, 0, 0.3);position: fixed;top: 0;bottom: 0;right: 0;left: 0;display: none;justify-content: center;align-items: center;}
.popup{background: #fff;border-radius: 10px;overflow: hidden;}
.btnBox{height: 50px;display: flex;font-size: 22px;align-items: center;}
.btnBox div{flex: 1;text-align: center;}
.signature_img{height: 40px;width: 80px;border-style: dashed; border-width: 1px;border-color: red;}
</style>
<div id="content-container" class="container" style="background-color: #8c8a8a;">
<div class="showproduct" >
<div class="logon-tab clearfix"> </div>
<div class="login-main">
<div class="cons">
<div class="treary_box" id="myDiv">
<div class="treary_item treary_name">
合同的标题
</div>
<div >
这里是合同的内容
</div>
</div>
</div>
<div class="popupBox">
<div class="popup">
<div id="signature" class="signature" ></div>
<!-- <canvas id="signName" width="500" height="250">-->
<!-- 您的浏览器当前不支持canvas画布，请更换别的浏览器进行签名操作-->
<!-- </canvas>-->
<div class="btnBox">
<div id="createImage">确定</div>
<div id="clearCanvas">取消</div>
</div>
</div>
</div>
<hr/>
<div >
{:token()}
<input type="hidden" name="category_id" id="category_id" value="{$treaty_info.id}" />
<input type="hidden" name="image" id="image" value="" />
<div class="form-group">
<button class="btn btn-primary btn-lg btn-block btn-submit">{:__('提交')}</button>
</div>
</div>
</div>
</div>
</div>
<script src="__ADDON__/js/index.js"></script>
<script>
$(document).ready(function(){
var innerDiv = document.querySelector("#myDiv");
var innerHeight = innerDiv.offsetHeight;
// 获取缩放比例并计算高度
var transformValue = window.getComputedStyle(innerDiv).getPropertyValue("transform");
var values = transformValue.split("(")[1].split(")")[0].split(",");
var scaleX = values[0];
var scaleY = values[3];
var transformedHeight = innerHeight * scaleY;
// 将父级DIV元素的高度设置为内部DIV元素的高度
var container = document.querySelector(".cons");
container.style.height = transformedHeight+100+ "px";
var index = 0;
var images = [];
var tag_name = '';
console.log("初始化",images);
//初始化签名样式
var arguments = {
width: '400px',
height: '250px',
cssclass: 'signature',
signatureLine: false,//去除默认画布上那条横线
lineWidth: '5',
};
$("#signature").jSignature(arguments);
//清除重写
$('#clearCanvas').on('click',function(){
$("#signature").jSignature("reset");
//清除重写调用方式
// $('#signName').clearSignature();
$('.popupBox').css('display' , 'none')
});
//点击唤起签名
$('.signClass' ).on('click', function(e) {
tag_name = e.currentTarget.dataset.tag_name;//每个签名的标志
index = $(this).index()
$('.popupBox').css('display' , 'flex')
})
//确认按钮
$('#createImage').on('click',function(){
// console.log(tag_name)
//标准格式但是base64会被tp框架过滤，所不校验，但是jSignature默认是使用png
var datapair = $("#signature").jSignature("getData", "image");
var i = new Image();
i.src = "data:" + datapair[0] + "," + datapair[1];
i.image = datapair[1];
$.ajax({
url: "/addons/treaty/index/upload",
data: {'image_data':encodeURIComponent(i.src)},
type: "post",
success: function (res) {
if (res.code == 1) {
layer.msg(res.msg);
// console.log("tag_name",tag_name);
// console.log("开始",images);
var is_replace = 0;
$.each(images, function (index, item) {
if(item['name'] == tag_name){
images[index] = {name:tag_name,url:res.data.url};
is_replace = 1
}
})
if(!is_replace){
images.push({name:tag_name,url:res.data.url});
}
// console.log("结束",images);
$('#newImage').attr('src',res.data.url);
var className = ".sign_"+tag_name
$(className).html(' <img class="signature_img" src="' +res.data.url + '" />')
$("#signature").jSignature("reset");
$('.popupBox').css('display' , 'none')
} else {
layer.msg(res.msg);
}
}
});
});
$(".btn-submit").click(function () {
var category_id = $("#category_id").val();
var token = $("input[name='__token__']").val();
$.ajax({
url: "/addons/treaty/index/index",
data: {__token__:token,images:images,category_id:category_id},
type: "post",
success: function (res) {
if (res.code == 1) {
layer.msg(res.msg);
setTimeout(function () {
window.location.href=res.url;
},1000)
} else {
$("input[name='__token__']").val(res.data.token)
layer.msg(res.msg);
return false;
}
}
})
});
$("img").click(function () {
var src = $(this).attr("src");
// layer.open({
// type: 1,
// title: false,
// closeBtn: 1,
// shadeClose: false,
// skin: 'img_box',
// content: '<img style="display: block;margin: 0 auto;max-width: 85%" src="'+$(this).attr("src")+'">'
// });
});
});
</script>