<div class="show-box" ref="rotate" @mousedown="moveImg" @mousewheel.prevent="rollImg($event,)">
<img :src="singleList.fileImgUrl" class="uploadimg" ref="img" :style="{transform:'scale('+multiples/100+') rotate('+rotate +'deg)'}"/>
</div>
<div class="img-plus" @click="toBIgChange()"><span class="tip">放大</span></div>
<div class="img-minus" @click="toSmallChange()"><span class="tip">缩小</span></div>
<div class="img-rotate" @click="toRotate()"><span class="tip">旋转</span></div>
</div>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=UTF-8">
<title>Document</title>
</head>
<body>
<div id="box1" style = 'width:100pxheight: 100pxbackground:#cccposition:fixed'></div>
<!-- 注意 盒子一定要定位 position:fixed或者 position:absolute-->
</body>
<script type="text/javascript">
function getPos(e){//这是一个 获取鼠标位置的函数
var oEvent = e || event
return {x: oEvent.clientX + document.documentElement.scrollLeft || document.body.scrollLeft,
y: oEvent.clientY +document.documentElement.scrollTop || document.body.scrollTop}
}
document.getElementById('box1').onmousedown = function(e){ //你要拖动对象在mousedown的时候发生的事情
var oEvent = e || event
var pos = getPos(oEvent)
var _this = this
_this.style.cursor = 'move'//改变鼠标状态
_this.disY = pos.y - _this.offsetTop
_this.disX = pos.x - _this.offsetLeft
document.onmousemove =function(e){ //在鼠标按下的时候 并且 移动的时候 发生的事情
var oEvent = e || event
var dpos = getPos(oEvent)
var t = dpos.y-_this.disY //移动的时候获取的 移动 top值
var l = dpos.x-_this.disX //移动的时候获取的 移动 left
_this.style.top=t + "px" //这两条给盒子赋值
_this.style.left=l + "px"
}
document.onmouseup = function(){//鼠标弹起的时候做的事情 一些释放 操作
_this.style.cursor = 'pointer'
this.onmousemove = null
this.onmouseup = null
try{
_this.releaseCapture()}catch(e){}
}
try{
_this.setCapture()}catch(b){} //这里是为了 让盒子拖动的时候不要复制页面里面的其他内容
return false
}
</script>
</html>
