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<template>
<view>
<view class="ui-fixed" :class="{'fixed-top':position=='top','fixed-bottom':position=='bottom'}"
:style="{top:position=='top'?`${top}px`:`` , zIndex: zIndex}">
<slot></slot>
</view>
<view :style="{height:height+'px'}" v-if="position=='top'"></view>
</view>
</template>
<script>
export default {
name: 'fixed',
props: {
position: {
type: [String],
default () {
return 'top'
}
},
top: {
type: [Number],
default () {
return 0
}
},
zIndex: {
type: [Number],
default () {
return 999
}
},
initHeight: {
type: String || Number,
default () {
return ''
}
},
},
data() {
return {
height: uni.getSystemInfoSync().windowWidth * 100 / 750
}
},
mounted() {
setTimeout(() => {
this.setHeight();
}, 100)
},
watch: {
initHeight(newVal, oldval) {
this.$nextTick(() => {
this.setHeight()
})
}
},
methods: {
setHeight() {
var _this = this;
var query = uni.createSelectorQuery().in(_this);
query.select('.ui-fixed').boundingClientRect(function(res) {
_this.height = res.height;
_this.$emit('height', res.height)
}).exec();
}
},
}
</script>
<style>
.ui-fixed {
position: fixed;
left: 0;
width: 100%;
z-index: 999;
}
.fixed-top {
top: 0;
}
.fixed-bottom {
bottom: 0;
}
</style>