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| <template>
<div class="slide-btn" ref="wrap" :style="{minWidth}">
<div class="btns">
<button v-for="(e, i) in options" :key="e + i" :ref="`btn${i}`" @click="changeCur(i)">{{ e }}</button>
</div>
<div class="slide" :style="{width: slideWidth + 'px', left: slideLeft + 'px', background: slideBgColor}"></div>
</div>
</template>
<script>
export default {
props: {
options: {
type: Array,
default: () => []
},
slideBgColor: {
type: String,
default: '#1A5493'
}
},
data () {
return {
slideWidth: 0,
slideLeft: 0,
current: 0,
minWidth: 0
}
},
watch: {
current (val, old) {
if (val !== old) {
this.getSlideWidth()
}
},
options: {
handler (val, old) {
this.getMinWidth()
},
deep: true
}
},
mounted () {
this.getSlideWidth()
this.getMinWidth()
},
methods: {
getMinWidth() {
this.$nextTick(() => {
let w = 0
this.options.forEach((e, i) => {
const styles = this.$refs[`btn${i}`][0].getBoundingClientRect()
w += styles.width
})
this.minWidth = w + 'px'
})
},
getSlideWidth () {
this.$nextTick(() => {
const wrapStyles = this.$refs.wrap.getBoundingClientRect()
const styles = this.$refs[`btn${this.current}`][0].getBoundingClientRect()
this.slideWidth = styles.width
this.slideLeft = styles.left - wrapStyles.left
})
},
changeCur(idx) {
this.current = idx
this.$emit('click', idx)
}
}
}
</script>
<style scoped>
.slide-btn {
box-sizing: border-box;
display: flex;
flex-wrap: nowrap;
align-items: center;
position: relative;
width: fit-content;
border: 1px solid #118899;
border-radius: 20px;
height: 32px;
padding: 3px 3px 3px 1px;
background: #121212;
}
.btns {
box-sizing: border-box;
position: relative;
z-index: 1;
display: flex;
flex-wrap: nowrap;
align-items: center;
}
.slide {
box-sizing: border-box;
position: absolute;
height: 100%;
border-radius: 20px;
transition: all .3s;
height: 26px;
}
button {
box-sizing: border-box;
border: none;
outline: none;
color: #fff;
background: none;
padding: 0 15px;
cursor: pointer;
font-size: 12px;
white-space: nowrap;
}
</style>
|
