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| // 屏幕适配 mixin 函数
|
| // * 默认缩放值
| const scale = {
| width: '1',
| height: '1',
| }
|
| // * 设计稿尺寸（px）
| const baseWidth = 1920
| const baseHeight = 1080
|
| // * 需保持的比例（默认1.77778）
| const baseProportion = parseFloat((baseWidth / baseHeight).toFixed(5))
|
| export default {
| data() {
| return {
| // * 定时函数
| drawTiming: null
| }
| },
| mounted () {
| this.calcRate()
| window.addEventListener('resize', this.resize)
| },
| beforeDestroy () {
| window.removeEventListener('resize', this.resize)
| },
| methods: {
| calcRate () {
| const appRef = this.$refs["appRef"]
| if (!appRef) return
| // 当前宽高比
| const currentRate = parseFloat((window.innerWidth / window.innerHeight).toFixed(5))
| if (appRef) {
| if (currentRate > baseProportion) {
| // 表示更宽
| scale.width = ((window.innerHeight * baseProportion) / baseWidth).toFixed(5)
| scale.height = (window.innerHeight / baseHeight).toFixed(5)
| appRef.style.transform = `scale(${scale.width}, ${scale.height}) translate(-50%, -50%)`
| } else {
| // 表示更高
| scale.height = ((window.innerWidth / baseProportion) / baseHeight).toFixed(5)
| scale.width = (window.innerWidth / baseWidth).toFixed(5)
| appRef.style.transform = `scale(${scale.width}, ${scale.height}) translate(-50%, -50%)`
| }
| }
| },
| resize () {
| clearTimeout(this.drawTiming)
| this.drawTiming = setTimeout(() => {
| this.calcRate()
| }, 200)
| }
| },
| }
|
|
