lbp-background.js
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/*
* @Author: ly525
* @Date: 2019-11-24 18:51:58
* @LastEditors: ly525
* @LastEditTime: 2020-05-17 21:02:47
* @FilePath: /luban-h5/front-end/h5/src/components/plugins/lbp-background.js
* @Github: https://github.com/ly525/luban-h5
* @Description: luban-h5 background image/color component/plugin
* @Copyright 2018 - 2019 luban-h5. All Rights Reserved
*/
import PropTypes from '@luban-h5/plugin-common-props'
import { renderWaterMark } from '../../utils/dom-helper'
export default {
name: 'lbp-background',
props: {
imgSrc: PropTypes.image({ label: '背景图' }),
backgroundColor: PropTypes.color({ label: '背景色', defaultValue: 'rgba(255, 255, 255, 0.2)' }),
waterMarkText: PropTypes.string({ label: '水印文字', defaultValue: '水印文字' }),
waterMarkFontSize: PropTypes.number({ label: '水印文字大小(px)', defaultValue: 16 }),
waterMarkRotate: PropTypes.number({ label: '水印旋转角度', defaultValue: 10 }),
waterMarkColor: PropTypes.color({ label: '水印文字颜色', defaultValue: 'rgba(184, 184, 184, 0.2)' })
},
methods: {
renderWaterMark () {
renderWaterMark({
container: this.$refs.root,
content: this.waterMarkText,
fontSize: this.waterMarkFontSize,
rotate: this.waterMarkRotate,
fillStyle: this.waterMarkColor
})
}
},
render () {
let style = {
width: '100%',
height: '100%'
}
if (this.imgSrc) {
style = {
...style,
'background-size': 'cover',
'background-position': '50% 50%',
'background-origin': 'content-box',
'background-image': `url(${this.imgSrc})`
}
} else {
style = {
...style,
backgroundColor: this.backgroundColor
}
}
return (
// [知识点:CSS] : https://codesandbox.io/s/ziyuansuzindexzaigao-wufafugaifuyuansudexiongdiyuansu-n15rd?file=/index.html
<div style="width: 100%; height: 100%; overflow: hidden; position: absolute; z-index: 0; opacity: 1;" ref="root">
<div style={style}></div>
</div>
)
},
mounted () {
this.renderWaterMark()
;['waterMarkText', 'waterMarkFontSize', 'waterMarkRotate', 'waterMarkColor'].forEach(key => {
this.$watch(key, this.renderWaterMark)
})
}
}