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: all linear 0.5s;
transform: translate(0, 0);
// display: none;
visibility: hidden;
}
.sector-list {
&.sector-list-active {
transition: all linear 0.5s;
.sector-item {
.flex(center);
transition: all linear 0.5s;
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);
}
}
}
}
}
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SectorMenu.js
import React from 'react';
export default class SectorMenu extends React.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;
}
const styles = {};
const { sectorMenuVisible } = this.state;
return sectorMenuItems.map((item, i) => {
// const styles = {
// transform: translate(0, -centerIconSize * 2);
// };
return (<div
className={`sector-item ${sectorMenuVisible && 'sector-item-active'}`}
style={styles}
onClick={() => this.onClickSectorMenuItem(i)}
key={i}
>
{item}
</div>)
});
}
render() {
const { sectorMenuVisible } = this.state;
return (
<div className="sector-menu-wrapper">
<div className="center-icon" onClick={this.showSectorMenu}>
{
sectorMenuVisible ? 'x' : '···'
}
</div>
<div className={`sector-list ${sectorMenuVisible && 'sector-list-active'}`}>
{this.getSectorJsx()}
</div>
</div>
)
}
}
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调用
<SectorMenu
sectorMenuItems={['A1', 'A2', 'A3']}
sectorMenuItemFunctions={[function () {console.log(0)}, function () {console.log(1)}, function () {console.log(2)}]}
/>
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期望
本来是想写成灵活分布，在怎么计算位置这里稍稍卡了一下，项目时间紧，改天抽空优化一下
-
灵活布局sectorMenuItem
-
灵活展示SectorMenu的位置（left,right, top, bottom...）
踩坑
过渡动画一直没有用，后来才知道是我在sector-item这个类里使用了display:none导致的，改用visibility属性就可以了。
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