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275 lines
8.2 KiB
275 lines
8.2 KiB
<template>
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<view class="placard">
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<view class="placard-content">
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<view class="img-box" :style="{ width: canvasW + 'px', height: canvasH + 'px' }">
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<img v-show="tempFilePath" :style="{ width: canvasW + 'px', height: canvasH + 'px' }" :src="tempFilePath" alt="" />
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</view>
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<div class="qrcode" style="display: none;">
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<vue-qrcode :value="qrCodeValue" :width="qrCodeSize"
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:color="{ dark: qrCodeDarkColor, light: qrCodeLightColor }" :margin="margin"
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type="image/png"></vue-qrcode>
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</div>
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<canvas :style="{ width: canvasW + 'px', height: canvasH + 'px' }"
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canvas-id="myCanvas" id="myCanvas"></canvas>
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<view class="add-btn">
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<view class="btn">
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长按图片保存到手机
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</view>
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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>
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import drawTextVertical from '@/utils/Canvas.js'
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import VueQrcode from 'vue-qrcode'
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export default {
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name: 'Placard',
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components : { VueQrcode },
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data() {
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return {
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qrCodeValue: import.meta.env.VITE_REDIRECT_URI + `?vid=${this.getUserInfo()}`,
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qrCodeSize: 180 * (window.innerWidth / 750),
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qrCodeDarkColor: '#000',
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qrCodeLightColor: '#fff',
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margin: 0,
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//画布信息
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canvasW: 299,
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canvasH: 403,
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//设备信息
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systemInfo: {},
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//图片路径
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tempFilePath: '',
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_rpx: 0,
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_center: 0
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}
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},
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methods: {
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async draw() { //绘制海报
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let self = this
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//获取设备信息
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self.systemInfo = await self.getSystemInfo();
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//转换相对单位
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let rpx = self.systemInfo.windowWidth / 750
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self._rpx = rpx
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//设置画布宽高
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self.canvasW = 542 * rpx
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self.canvasH = 731 * rpx
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//海报背景
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let bg = new Image();
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bg.src = import.meta.env.VITE_REDIRECT_URI + '/static/placard/placard-bg.png'
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//logo
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let logo = new Image();
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logo.src = import.meta.env.VITE_REDIRECT_URI + '/static/placard/logo.png'
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bg.onload = () => {
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logo.onload = () => { //确保背景和logo加载完成(不然海报可能会少logo)
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setTimeout(() => {
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let ctx = document.querySelector('canvas').getContext('2d')
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let img = document.querySelector('.qrcode img')
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let center = self.canvasW / 2; //画布中心位置
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self._center = center
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//绘制图片
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ctx.drawImage(bg, 0, 0, self.canvasW, self.canvasH)
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ctx.drawImage(img, center - (self.qrCodeSize / 2), 295 * rpx, self.qrCodeSize, self
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.qrCodeSize)
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ctx.drawImage(logo, center - (100 * rpx / 2) , 60 * rpx , 100 * rpx, 100 * rpx)
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//绘制文字
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ctx.font = `bold ${40 * rpx}px 楷体`
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ctx.textAlign = 'center'
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ctx.fillStyle = "#59B495";
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ctx.fillText('上门服务', center, 200 * rpx, 400)
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ctx.fillStyle = "#0A543B";
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ctx.font = `100 ${25 * rpx}px 楷体`
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ctx.fillText(`一扫疲劳 舒服入眠`, center, 240 * rpx, 400)
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ctx.font = `100 ${25 * rpx}px 宋体`
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ctx.fillStyle = "#0A543B";
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ctx.textAlign = 'center';
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drawTextVertical(ctx, '微信扫码下单', 130 * rpx, 315 * rpx, self.qrCodeSize);
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ctx.textAlign = 'center';
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drawTextVertical(ctx, '在线选择技师', 400 * rpx, 315 * rpx, self.qrCodeSize);
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ctx.font = `100 ${18 * rpx}px 宋体`
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ctx.fillStyle = '#053323'
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ctx.fillText(`长按扫一扫下单可领取`, center, 525 * rpx, 400)
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ctx.font = `bold ${43 * rpx}px 宋体`
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ctx.fillStyle = '#EC8D44'
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ctx.fillText(`200元`, center, 580 * rpx, 400)
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ctx.font = `100 ${18 * rpx}px 宋体`
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ctx.fillText(`百万明星技师在线接单`, center, 625 * rpx, 400)
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//画图形
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this.paintingCapsule(ctx, center - (90 * rpx / 2), 250 * rpx, 90 * rpx, 25 * rpx,
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13 * rpx, '#59B495', 'time')
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this.paintingCapsule(ctx, center + (130 * rpx / 2), 530 * rpx, 25 * rpx, 70 * rpx,
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13 * rpx, '#BCEED6', 'coupon')
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////画海报最后的标签列表
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this.drawList(ctx, 135 * rpx, 650 * rpx, 60 * rpx, 20 * rpx, 10 * rpx, '#59B495')
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uni.canvasToTempFilePath({
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x: 0, // 起点坐标
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y: 0,
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width: self.canvasW, // canvas 宽
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height: self.canvasH, // canvas 高
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canvasId: 'myCanvas', // canvas id
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success(res) {
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self.tempFilePath = res.tempFilePath //相对路径
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}
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})
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})
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}
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}
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},
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// 获取设备信息
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getSystemInfo() {
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return new Promise((req, rej) => {
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uni.getSystemInfo({
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success: function(res) {
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req(res)
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}
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});
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})
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},
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paintingCapsule(ctx, x, y, width, height, radius, color, current) { //画椭圆(胶囊)
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// 开始新的路径
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ctx.beginPath();
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// 绘制左上角圆角
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ctx.moveTo(x + radius, y);
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ctx.arcTo(x + width, y, x + width, y + height, radius);
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// 绘制右上角圆角
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ctx.arcTo(x + width, y + height, x, y + height, radius);
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// 绘制右下角圆角
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ctx.arcTo(x, y + height, x, y, radius);
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// 绘制左下角圆角
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ctx.arcTo(x, y, x + width, y, radius);
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// 闭合路径（实际上在arcTo后已经是闭合的，但显式调用可以增加可读性）
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ctx.closePath();
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// 设置填充颜色
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ctx.fillStyle = color;
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// 填充路径
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ctx.fill();
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//下面是再写不同区域的内容
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if (current == 'time') {
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ctx.fillStyle = "#fff";
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ctx.font = `100 ${17 * this._rpx}px 楷体`
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ctx.fillText(`24小时`, this._center, 267 * this._rpx);
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} else if (current == 'coupon') {
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ctx.fillStyle = "#EC8D44";
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ctx.font = `100 ${13 * this._rpx}px 楷体`
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let offset = 13 * this._rpx
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drawTextVertical(ctx, '优惠券', 349 * this._rpx, 555 * this._rpx, height - offset);
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}
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},
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drawList(ctx, x, y, width, height, radius, color) { //画海报最后的标签列表
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let list = ['安全', '正规', '健康', '便捷']
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let offset = 15 //偏移量
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let currentTagInfo = {
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x
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}
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list.forEach(item => {
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// 开始新的路径
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ctx.beginPath();
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// 绘制左上角圆角
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ctx.moveTo(currentTagInfo.x + radius, y);
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ctx.arcTo(currentTagInfo.x + width, y, currentTagInfo.x + width, y + height, radius);
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// 绘制右上角圆角
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ctx.arcTo(currentTagInfo.x + width, y + height, currentTagInfo.x, y + height, radius);
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// 绘制右下角圆角
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ctx.arcTo(currentTagInfo.x, y + height, currentTagInfo.x, y, radius);
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// 绘制左下角圆角
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ctx.arcTo(currentTagInfo.x, y, currentTagInfo.x + width, y, radius);
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// 设置边框颜色
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ctx.strokeStyle = color;
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// 设置边框宽度（可选）
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ctx.lineWidth = 1; // 或者你想要的任何宽度
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// 闭合路径（实际上在arcTo后已经是闭合的，但显式调用可以增加可读性）
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ctx.closePath();
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// 绘制边框
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ctx.stroke();
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//圆点
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ctx.beginPath();
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ctx.fillStyle = color;
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ctx.arc(currentTagInfo.x + (10 * this._rpx), y + (10 * this._rpx), 2, 0,360)
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ctx.fill()
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//绘制文本
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ctx.font = `100 ${13 * this._rpx}px 楷体`
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ctx.fillText(item, currentTagInfo.x + (33 * this._rpx), y + (15 * this._rpx), 400)
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let next = currentTagInfo.x + width + offset; //下一个标签的位置
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currentTagInfo = { x : next }
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})
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},
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getUserInfo(){
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if(localStorage.getItem('userInfo')){
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return JSON.parse(localStorage.getItem('userInfo')).id
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}else{
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uni.navigateTo({
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url: '/pages/login/login'
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})
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}
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}
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}
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}
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</script>
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<style lang="scss" scoped>
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.placard {
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display: flex;
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min-height: 100vh;
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align-items: center;
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justify-content: center;
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.placard-content{
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display: flex;
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flex-direction: column;
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align-items: center;
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.add-btn {
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100rpx;
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width: 750rpx;
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.btn {
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display: flex;
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align-items: center;
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justify-content: center;
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width: 72%;
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height: 80rpx;
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border-radius: 40rpx;
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color: white;
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font-size: 28rpx;
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background: linear-gradient(180deg, #6FDFBE, #5AC796);
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margin-top: 40rpx;
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}
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}
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}
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}
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canvas{
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opacity: 0;
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position: fixed;
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top: 100%;
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left: 0;
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}
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</style>
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