feat: 初始化
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George
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uni_modules/lime-qrcode/components/l-qrcode/l-qrcode.vue
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uni_modules/lime-qrcode/components/l-qrcode/l-qrcode.vue
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<template>
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<view class="l-qrcode" :style="[styles]">
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<!-- #ifndef APP-NVUE -->
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<canvas :style="styles" type="2d" :canvas-id="canvasId" :id="canvasId"></canvas>
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<!-- #endif -->
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<!-- #ifdef APP-NVUE -->
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<web-view
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ref="qrcodeRef"
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@pagefinish="onFinished"
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@error="onError"
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@onPostMessage="onMessage"
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:style="styles" src="/uni_modules/lime-qrcode/hybrid/html/index.html?v=1"></web-view>
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<!-- #endif -->
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<!-- <view class="l-qrcode-mask" v-if="['loading', 'expired'].includes(props.status)">
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<l-loading v-if="props.status == 'loading'"></l-loading>
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<view class="l-qrcode-expired" v-if="props.status == 'expired'">
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<slot></slot>
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</view>
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</view> -->
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</view>
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</template>
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<script lang="ts">
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// @ts-nocheck
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import { computed, defineComponent, getCurrentInstance, watch, onUnmounted, onMounted } from '@/uni_modules/lime-shared/vue';
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import QRCodeProps from './props'
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// #ifndef APP-NVUE
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import { getCanvas, isCanvas2d } from './useCanvas'
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import { QRCodeCanvas } from './qrcode.js';
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// #endif
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import { addUnit } from '@/uni_modules/lime-shared/addUnit'
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import { createImage } from '@/uni_modules/lime-shared/createImage'
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import { unitConvert } from '@/uni_modules/lime-shared/unitConvert'
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import { isBase64 } from '@/uni_modules/lime-shared/isBase64'
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import { pathToBase64 } from '@/uni_modules/lime-shared/pathToBase64'
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import { debounce } from '@/uni_modules/lime-shared/debounce'
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const name = 'l-qrcode'
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export default defineComponent({
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name,
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props: QRCodeProps,
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emits: ['success'],
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setup(props, {emit}) {
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const context = getCurrentInstance();
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const canvasId = `l-qrcode${context.uid}`
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const styles = computed(() => `width: ${addUnit(props.size)}; height: ${addUnit(props.size)};`)
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let qrcode = null
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let canvas = null
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const qrCodeProps = computed(() => {
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const { value, icon, size, color, bgColor, bordered, iconSize, errorLevel, marginSize } = props
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const imageSettings = {
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src: icon,
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x: undefined,
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y: undefined,
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height: unitConvert(iconSize),
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width: unitConvert(iconSize),
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excavate: true,
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}
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return {
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value,
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size: unitConvert(size),
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level: errorLevel,
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bgColor,
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fgColor: color,
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imageSettings: icon ? imageSettings : undefined,
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includeMargin: bordered,
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marginSize: marginSize ?? 0
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}
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})
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// #ifdef APP-NVUE
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const stacks = new Map()
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// #endif
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const canvasToTempFilePath = debounce((args: UniNamespace.CanvasToTempFilePathRes) => {
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if(!canvas) return
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// #ifndef APP-NVUE
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const copyArgs = Object.assign({
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canvasId,
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canvas: null
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}, args)
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if (isCanvas2d) {
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copyArgs.canvas = canvas
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}
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if ('toTempFilePath' in canvas) {
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canvas.toTempFilePath(copyArgs)
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} else {
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uni.canvasToTempFilePath(copyArgs, context);
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}
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// #endif
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// #ifdef APP-NVUE
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if(!stacks.size) {
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const flie = 'file-' + Math.random();
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const stack = {args, time: +new Date()}
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stacks.set(`${flie}`, stack)
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canvas.toDataURL(flie)
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setTimeout(() => {
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const stack = stacks.get(flie)
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if(stack && 'fail' in stack.args) {
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stack.args.fail({
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error: '超时'
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})
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stacks.delete(flie)
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}
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},5000)
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}
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// #endif
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})
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const useCanvasToTempFilePath = () => {
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if(props.useCanvasToTempFilePath) {
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canvasToTempFilePath({
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success(res: UniNamespace.CanvasToTempFilePathRes) {
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emit('success', res.tempFilePath)
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}
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})
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}
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}
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// #ifdef APP-NVUE
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const onFinished = () => {
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const { pixelRatio } = uni.getSystemInfoSync()
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canvas = {
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toDataURL(flie: string) {
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const ref: any = context.refs['qrcodeRef'];
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if(ref) {
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ref?.evalJS(`toDataURL('${flie}')`)
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}
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}
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};
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qrcode = {
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async render(props: any) {
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const ref: any = context.refs['qrcodeRef'];
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const { src } = props.imageSettings || { };
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if(!ref) return
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if(src && !isBase64(src) && !/^http/.test(src) && /^\/static/.test(src)) {
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props.imageSettings.src = await pathToBase64(src)
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}
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const _props = JSON.stringify(Object.assign({}, props, {pixelRatio}));
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ref?.evalJS(`render(${_props})`);
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}
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}
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qrcode.render(qrCodeProps.value)
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useCanvasToTempFilePath()
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}
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const onError = () => {
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console.warn('lime-qrcode 加载失败')
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}
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const onMessage = (e: any) => {
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const {detail:{data: [res]}} = e
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if(res.event == 'toDataURL') {
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const {file, image, msg} = res.data;
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const stack = stacks.get(file)
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if(stack && image && 'success' in stack.args) {
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stack.args.success({tempFilePath: image})
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stacks.delete(file)
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} else if(stack && 'fails' in stack.args) {
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stack.args.fail({error: msg})
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stacks.delete(file)
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}
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}
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}
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// #endif
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const propsWatch = watch(props, () => {
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if (qrcode) {
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qrcode.render(qrCodeProps.value)
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useCanvasToTempFilePath()
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}
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})
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onMounted(() => {
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// #ifndef APP-NVUE
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getCanvas(canvasId, { context }).then(res => {
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canvas = res
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qrcode = new QRCodeCanvas(res, {
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// #ifdef H5
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path2D: false,
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// #endif
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pixelRatio: isCanvas2d ? uni.getSystemInfoSync().pixelRatio : 1,
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createImage
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})
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qrcode.render(qrCodeProps.value)
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useCanvasToTempFilePath()
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})
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// #endif
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})
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onUnmounted(() => {
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propsWatch && propsWatch()
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})
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return {
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canvasId,
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styles,
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props,
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canvasToTempFilePath,
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// #ifdef APP-NVUE
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onFinished,
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onError,
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onMessage
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// #endif
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}
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}
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})
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</script>
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<style lang="scss">
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.l-qrcode {
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position: relative;
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&-mask {
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position: absolute;
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inset: 0;
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// inset-block-start: 0;
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// inset-inline-start: 0;
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z-index: 10;
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display: flex;
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flex-direction: column;
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justify-content: center;
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align-items: center;
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// width: 100%;
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// height: 100%;
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color: rgba(0, 0, 0, 0.88);
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line-height: 1.5714285714285714;
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background: rgba(255, 255, 255, 0.96);
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text-align: center;
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}
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}
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</style>
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