css中实现环形/扇形菜单的方法

这篇文章主要介绍了css中实现环形/扇形菜单的方法，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。

前言

项目需要用到环形菜单，初略在网上找了一下，没有找到合适的，于是自己写了一个很简单的，后续再优化。

这个组件是基于react,但是原理都一样。

展开效果如下：

实现

css(less)

@centerIconSize:30px;

.flex(@justify:flex-start,@align:center){
justify-content:@justify;
align-items:@align;
display:flex;
}
.sector-menu-wrapper{
position:relative;
width:@centerIconSize;
margin:auto;

.center-icon{
.flex(center);
width:@centerIconSize;
height:@centerIconSize;
border-radius:50%;
background:rgba(0,0,0,0.3);
color:white;
cursor:pointer;
}

.sector-item{
position:absolute;
.flex(center);
width:@centerIconSize;
height:@centerIconSize;
border-radius:50%;
background:rgba(0,0,0,0.3);
cursor:pointer;
color:white;
top:0;
left:0;
transition:alllinear0.5s;
transform:translate(0,0);
//display:none;
visibility:hidden;
}

.sector-list{
&.sector-list-active{
transition:alllinear0.5s;
.sector-item{
.flex(center);
transition:alllinear0.5s;
transform:translate(0,0);
visibility:visible;

&:first-child{
transform:translate(0,-@centerIconSize*1.5);
}

&:nth-child(2){
transform:translate(-@centerIconSize*1.5,0);
}

&:nth-child(3){
transform:translate(0,@centerIconSize*1.5);

}
}
}
}
}

SectorMenu.js

importReactfrom'react';

exportdefaultclassSectorMenuextendsReact.Component{
state={
direction:'left',
sectorMenuVisible:false,
centerIconSize:30,
sectorItemSize:30,
}

/**
*显示环形菜单
*/
showSectorMenu=()=>{
const{sectorMenuVisible}=this.state;
this.setState({
sectorMenuVisible:!sectorMenuVisible,
})
}

onClickSectorMenuItem=(index)=>{
const{sectorMenuItemFunctions}=this.props;
if(!sectorMenuItemFunctions||typeof(sectorMenuItemFunctions[index])!=='function'){
return;
}
sectorMenuItemFunctions[index]();
}

getSectorJsx=()=>{
const{sectorMenuItems}=this.props;

if(!sectorMenuItems||!Array.isArray(sectorMenuItems)||sectorMenuItems.length===0){
return;
}

conststyles={};
const{sectorMenuVisible}=this.state;

returnsectorMenuItems.map((item,i)=>{
//conststyles={
//transform:translate(0,-centerIconSize*2);
//};

return(
this.onClickSectorMenuItem(i)}
key={i}
>
{item}
)
});
}
render(){
const{sectorMenuVisible}=this.state;
return(


{
sectorMenuVisible?'x':'···'
}