79 lines
2.6 KiB
JavaScript
79 lines
2.6 KiB
JavaScript
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import {sendMessage} from '@/utils/iframe';
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const scale = 1
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const VISUAL_CONFIG = {width: 1920 * scale, height: 1080 * scale}
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export default {
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data() {
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return {
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autoStyle: {}
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}
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},
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computed: {
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},
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mounted() {
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this.getAutoStyle()
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this.initScaleEvent()
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},
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beforeDestroy() {
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this._removeScaleEvent()
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},
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methods: {
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getAutoStyle() {
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const innerHeight = window.innerHeight
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const innerWidth = window.innerWidth
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const {scale, origin, position, type} = this.getScale()
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sendMessage('scale', {scale, type, innerHeight, innerWidth})
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localStorage.setItem('scale', JSON.stringify({scale, type, innerHeight, innerWidth}))
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this.autoStyle = {
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width: VISUAL_CONFIG.width + 'px',
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height: VISUAL_CONFIG.height + 'px',
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transform: `scale(${scale})`,
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transformOrigin: origin,
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...position
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}
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},
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getScale() {
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let scale = 1
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// 1 按照高度缩放 2 按照宽度缩放
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let type = 1
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let origin = 'top center'
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const innerWidth = window.innerWidth
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const innerHeight = window.innerHeight
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const widthScale = innerWidth / VISUAL_CONFIG.width
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const scaleHeight = VISUAL_CONFIG.height * widthScale
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const position = {left: 0, top: 0, marginTop: 0, marginLeft: 0}
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if (scaleHeight <= innerHeight) {
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origin = 'left center'
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scale = widthScale
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position.left = 0
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position.top = '50%'
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position.marginTop = -VISUAL_CONFIG.height / 2 + 'px'
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position.marginLeft = 0
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let type = 2
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if (scale > 1) {
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origin = 'left top'
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position.left = 0
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position.top = 0
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position.marginTop = 0
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position.marginLeft = 0
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}
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} else {
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scale = innerHeight / VISUAL_CONFIG.height
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position.left = '50%'
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position.top = 0
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position.marginTop = 0
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position.marginLeft = -VISUAL_CONFIG.width / 2 + 'px'
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}
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return {scale, origin, position, type}
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},
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initScaleEvent() {
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window.addEventListener('resize', this.getAutoStyle.bind(this))
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},
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_removeScaleEvent() {
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window.removeEventListener('resize', this.getAutoStyle.bind(this))
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}
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}
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}
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