444 lines
12 KiB
Vue
444 lines
12 KiB
Vue
<template>
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<view class="qiqb-ctx" v-bind:class="{'on':show}">
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<view class="qiqb-ctx-box">
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<!-- <text @click="show=false"></text> -->
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<canvas canvas-id="ctx" style="width:330px;height:300px" v-show="img_show"></canvas>
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</view>
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<view class="qiqb-ctx-btns u-border-bottom">
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<view>分享至</view>
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<view>长按海报可转发分享</view>
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<view>
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<!-- <text>微信好友</text><text>分享朋友圈</text> -->
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<text @click="down">保存图片</text>
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</view>
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</view>
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<view class="qiqb-ctx-close" @click="show=false">取消</view>
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</view>
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</template>
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<!-- https://crmeb-test.shop.lihaink.cn/api/upload/image/field -->
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<script>
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export default {
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name: "share",
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data() {
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return {
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show: false,
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img_show: true,
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mode: 'img',
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list: [],
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pext1: '',
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pext2: ''
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}
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},
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onLoad() {
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uni.$on('add', function(res) {
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console.log(res.listData) // 为 B 页面传过来的值
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})
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},
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mounted() {
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// console.log(this.list,'222222')
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},
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methods: {
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//子组件接受参数
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refresh(index) {
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this.list = index;
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this.pext1 = index[index.length - 2].content
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this.pext2 = index[index.length - 1].content
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// console.log(this.list)
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},
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init() { // 通过opt传参数
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uni.showLoading({
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title: '生成中'
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})
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let self = this
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let ctx = uni.createCanvasContext('ctx')
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// 绘制背景 宽度 高度 圆角 颜色
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self.drawBg(ctx, 330, 300, 8, '#fff')
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// 需要用到的图片提前循环下载好，本地除外
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uni.downloadFile({
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url: 'http://banbai.oss-cn-beijing.aliyuncs.com/20230524/96e80fb572e35d4acebdce67dbd41f30.jpg',
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success: function(e) {
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let img = e.tempFilePath // 封面图
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uni.downloadFile({
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url: 'http://banbai.oss-cn-beijing.aliyuncs.com/20230524/96e80fb572e35d4acebdce67dbd41f30.jpg',
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success: function(e) {
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let photo = e.tempFilePath // 头像
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uni.downloadFile({
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url: 'http://banbai.oss-cn-beijing.aliyuncs.com/20230606/f0738e1ff432c08b369ca5e4b906a34a.png',
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success: function(e) {
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uni.hideLoading()
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let qrcode = e.tempFilePath // 二维码
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self.drawTxtOne(ctx, '农业咨询小程序', 220, 35, 100,
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'#222', 12, false)
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// 绘制圆角头像 图片地址 距离左边 距离上边 宽度 高度 圆角
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self.drawImg(ctx,
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'https://lihai001.oss-cn-chengdu.aliyuncs.com/storage/202310/20231013091310.png',
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170, 10, 40, 40, 20)
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self.drawImg(ctx,
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'https://lihai001.oss-cn-chengdu.aliyuncs.com/storage/202310/20231013091059.png',
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10, 50, 40, 40, 20)
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self.drawImg(ctx,
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'https://lihai001.oss-cn-chengdu.aliyuncs.com/storage/202310/20231013091310.png',
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10, 118, 40, 40, 20)
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// 绘制封面图 图片地址 距离左边 距离上边 宽度 高度 圆角
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// self.drawImg(ctx, img, 10, 120, 210, 260, 8)
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// 绘制二维码 图片地址 距离左边 距离上边 宽度 高度 圆角
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self.drawImg(ctx,
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'https://lihai001.oss-cn-chengdu.aliyuncs.com/storage/202310/ai_qr_20231013091327.jpg',
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174, 195, 100, 100, 0)
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// 绘制单行文字 图片地址 距离左边 距离上边 宽度 颜色 字号 加粗
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self.drawTxtOne(ctx, self.pext1, 60, 70, 100,
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'#222', 12, false)
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// self.drawTxtTwo(ctx, self.pext1, 60, 64, 80,
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// '#222', 13)
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// self.drawTxtTwo(ctx, self.pext1, 60,64,
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// 190, 20, '#222', 12)
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// 绘制单行文字 图片地址 距离左边 距离上边 宽度 颜色 字号 加粗
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// self.drawTxtOne(ctx, '邀请您一起购好物', 60, 80, 100,
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// '#666', 9, false)
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// 绘制两行文字 图片地址 距离左边 距离上边 宽度 行高 颜色 字号
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self.drawTxtFour(ctx,
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self.pext2,
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60, 120,
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190, 20, '#222', 12)
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// 绘制单行文字 图片地址 距离左边 距离上边 宽度 颜色 字号 加粗
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self.drawTxtOne(ctx, '下载二维码', 15, 250, 100,
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'#666', 11, false)
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// 绘制单行文字 图片地址 距离左边 距离上边 宽度 颜色 字号 加粗
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// self.drawTxtOne(ctx, '今日特价：￥', 15, 350, 100,
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// '#ED3327', 11, false)
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// 绘制单行文字 图片地址 距离左边 距离上边 宽度 颜色 字号 加粗
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// self.drawTxtOne(ctx, '86.00', 82, 350, 100,
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// '#ED3327', 11, true)
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// 绘制删除文字 图片地址 距离左边 距离上边 行高 颜色 字号 加粗
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// self.drawTxtDel(ctx, '原价:20', 15, 370, 4,
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// '#818181', 10, false)
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// 结束绘制
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ctx.draw()
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self.show = true
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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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},
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down() {
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uni.showLoading({
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title: '保存中'
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})
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uni.canvasToTempFilePath({
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canvasId: 'ctx',
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quality: 1,
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success: (res) => {
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uni.hideLoading()
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console.log(res)
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this.$emit('down', res)
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this.show = false
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// 保存到相册 自定义实现
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uni.saveImageToPhotosAlbum({
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filePath: res.tempFilePath,
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success: (res) => {
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console.log('保存')
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uni.showModal({
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title: '保存成功'
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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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// 绘制背景 宽度 高度 圆角 颜色
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drawBg(ctx, w, h, r, color) {
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let x = 0
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let y = 0
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ctx.setFillStyle(color)
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ctx.save()
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ctx.beginPath()
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ctx.moveTo(x + r, y)
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ctx.arcTo(x + w, y, x + w, y + h, r)
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ctx.arcTo(x + w, y + h, x, y + h, r)
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ctx.arcTo(x, y + h, x, y, r)
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ctx.arcTo(x, y, x + w, y, r)
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ctx.closePath()
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ctx.fill()
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},
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// 绘制图片 图片地址 距离左边 距离上边 宽度 高度 圆角
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drawImg(ctx, img, x, y, w, h, r) {
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let self = this
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ctx.save()
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ctx.beginPath()
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ctx.arc(x + r, y + r, r, Math.PI, Math.PI * 1.5)
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ctx.arc(x + w - r, y + r, r, Math.PI * 1.5, Math.PI * 2)
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ctx.arc(x + w - r, y + h - r, r, 0, Math.PI * 0.5)
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ctx.arc(x + r, y + h - r, r, Math.PI * 0.5, Math.PI)
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ctx.clip()
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ctx.drawImage(img, x, y, w, h)
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ctx.restore()
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},
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// 绘制单行文字 图片地址 距离左边 距离上边 宽度 颜色 字号 加粗
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drawTxtOne(ctx, text, x, y, maxWidth, color, size, bold) {
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ctx.save()
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ctx.beginPath()
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let chr = text.split("")
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let temp = ""
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let row = []
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ctx.setFontSize(size)
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ctx.setFillStyle(color)
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for (let a = 0; a < chr.length; a++) {
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if (ctx.measureText(temp).width < maxWidth) {
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temp += chr[a]
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}
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}
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row.push(temp)
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if (ctx.measureText(temp).width > maxWidth) row[0] = row[0] + '...'
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for (var b = 0; b < row.length; b++) {
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ctx.fillStyle = color
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if (bold) {
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ctx.font = 'normal bold ' + size + 'px sans-serif'
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} else {
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ctx.font = 'normal ' + size + 'px sans-serif'
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}
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ctx.fillText(row[b], x, y)
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}
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},
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// 绘制两行文字 图片地址 距离左边 距离上边 宽度 行高 颜色 字号
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drawTxtTwo(ctx, text, x, y, maxWidth, lineHeight, color, size) {
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ctx.save()
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ctx.beginPath()
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let chr = text.split("")
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let temp = ""
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let row = []
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ctx.setFontSize(size)
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ctx.setFillStyle(color)
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for (let a = 0; a < chr.length; a++) {
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if (ctx.measureText(temp).width < maxWidth) {
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temp += chr[a];
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} else {
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a--
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row.push(temp)
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temp = ""
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}
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}
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row.push(temp)
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if (row.length > 2) {
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let rowCut = row.slice(0, 2)
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let rowPart = rowCut[1]
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let test = ""
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let empty = []
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for (var a = 0; a < rowPart.length; a++) {
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if (ctx.measureText(test).width < maxWidth) {
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test += rowPart[a]
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} else {
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break
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}
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}
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empty.push(test)
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var group = empty[0] + "..."
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rowCut.splice(1, 1, group)
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row = rowCut
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}
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for (var b = 0; b < row.length; b++) {
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ctx.fillStyle = color
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ctx.font = 'normal ' + size + 'px sans-serif'
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ctx.fillText(row[b], x, y + b * lineHeight, 300)
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}
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},
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drawTxtFour(ctx, text, x, y, maxWidth, lineHeight, color, size) {
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ctx.save()
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ctx.beginPath()
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let chr = text.split("")
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let temp = ""
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let row = []
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ctx.setFontSize(size)
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ctx.setFillStyle(color)
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for (let a = 0; a < chr.length; a++) {
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if (ctx.measureText(temp).width < maxWidth) {
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temp += chr[a];
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} else {
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a--
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row.push(temp)
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temp = ""
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}
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}
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row.push(temp)
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if (row.length > 4) {
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let rowCut = row.slice(0, 4)
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let rowPart = rowCut[1]
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let test = ""
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let empty = []
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for (var a = 0; a < rowPart.length; a++) {
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if (ctx.measureText(test).width < maxWidth) {
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test += rowPart[a]
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} else {
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break
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}
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}
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empty.push(test)
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var group = empty[0] + "..."
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rowCut.splice(1, 1, group)
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row = rowCut
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}
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for (var b = 0; b < row.length; b++) {
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ctx.fillStyle = color
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ctx.font = 'normal ' + size + 'px sans-serif'
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ctx.fillText(row[b], x, y + b * lineHeight, 300)
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}
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},
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// 绘制删除线文字 图片地址 距离左边 距离上边 行高 颜色 字号 加粗
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drawTxtDel(ctx, txt, x, y, h, color, size) {
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ctx.fillStyle = color
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ctx.font = 'normal ' + size + 'px sans-serif'
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ctx.fillText(txt, x, y)
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ctx.beginPath()
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let width = ctx.measureText(txt).width;
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ctx.rect(x, y - h, width, 1)
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ctx.fillStyle = color
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ctx.fill()
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}
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}
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}
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</script>
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<style>
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.qiqb-ctx {
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position: fixed;
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top: 0;
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right: 0;
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bottom: 0;
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bottom: 0;
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left: 0;
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z-index: -1;
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display: flex;
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background: rgba(0, 0, 0, .6);
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opacity: 0;
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transition: all .3s;
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flex-direction: column;
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align-items: flex-end;
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justify-content: flex-end
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}
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.qiqb-ctx.on {
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z-index: 2000;
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opacity: 1
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}
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.qiqb-ctx-box {
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position: relative;
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display: flex;
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padding: 30upx 0 40upx;
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width: 750upx;
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justify-content: center
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}
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.qiqb-ctx-box text {
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position: absolute;
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top: -40upx;
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right: 145upx;
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display: inline-flex;
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width: 47upx;
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height: 47upx;
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background: url('img/close.png');
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background-size: 100% 100%
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}
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.qiqb-ctx-btns {
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display: flex;
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width: 750upx;
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height: 330upx;
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border-radius: 20upx 20upx 0 0;
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background: #fff;
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flex-direction: row;
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flex-direction: column;
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align-items: center
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}
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.qiqb-ctx-btns view:nth-child(1) {
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display: flex;
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padding-top: 10upx;
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height: 80upx;
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font-weight: 700;
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font-size: 30upx;
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align-items: center
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}
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.qiqb-ctx-btns view:nth-child(2) {
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height: 80upx;
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color: #666;
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font-size: 24upx
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}
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.qiqb-ctx-btns view:nth-child(3) {
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display: flex;
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padding-bottom: 30upx;
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font-size: 26upx;
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flex-direction: row;
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align-items: center
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}
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.qiqb-ctx-btns view:nth-child(3) text {
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display: flex;
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width: 250upx;
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flex-direction: column;
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align-items: center;
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justify-content: center
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}
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.qiqb-ctx-btns view:nth-child(3) text:nth-child(1)::before {
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display: inline-flex;
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margin-bottom: 20upx;
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width: 86upx;
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height: 86upx;
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background: url('img/3.png');
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background-size: 100% 100%;
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content: ''
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}
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.qiqb-ctx-btns view:nth-child(3) text:nth-child(2)::before {
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display: inline-flex;
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margin-bottom: 20upx;
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width: 86upx;
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height: 86upx;
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background: url('img/1.png');
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background-size: 100% 100%;
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content: ''
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}
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.qiqb-ctx-btns view:nth-child(3) text:nth-child(3)::before {
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display: inline-flex;
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margin-bottom: 20upx;
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width: 86upx;
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height: 86upx;
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background: url('img/2.png');
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background-size: 100% 100%;
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content: ''
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}
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.qiqb-ctx-close {
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display: flex;
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padding-bottom: 50upx;
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width: 100%;
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height: 150upx;
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background: #fff;
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font-size: 32upx;
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align-items: center;
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justify-content: center
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}
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</style> |