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2025-06-06 03:08:19 +08:00
<template>
<view class="poster_page">
<nav-bar title="海报"></nav-bar>
<canvas canvas-id="poster" class="poster_canvas"></canvas>
<swiper class="poster_swiper" previous-margin="110rpx" circular :current="swiperIndex" next-margin="110rpx" @change="onSwiperChange">
<swiper-item v-for="(item, index) of dataInfo.headImgs" :key="index">
<view class="goods_info_box" :class="{ active: swiperIndex == index }">
<image class="goods_image" :src="item" mode="aspectFit"></image>
<view class="goods_info">
<view class="goods_name">{{dataInfo.goodsRecommendShare.goodsName}}</view>
<view class="price_box">
<view class="price">{{dataInfo.goodsRecommendShare.goodsPrice}}</view>
<view class="store_price">{{dataInfo.priceShop}}</view>
</view>
<view class="poster_info">
<view class="info">
<view>长按识别二维码访问</view>
<text>{{platformName}}</text>
</view>
<image class="poster_code_image" :src="dataInfo.goodsRecommendShare.recommendCodeGoods" mode="aspectFit"></image>
</view>
</view>
</view>
</swiper-item>
</swiper>
<view class="share_save_box">
<!-- #ifdef MP -->
<button open-type="share">
<image src="../../static/demo/ic_pic.png" mode="aspectFit"></image>
<text>发给好友</text>
</button>
<!-- #endif -->
<!-- #ifdef APP-PLUS -->
<button @click="onAppShare">
<image src="../../static/demo/ic_pic.png" mode="aspectFit"></image>
<text>发给好友</text>
</button>
<!-- #endif -->
<button class="onSave" @click="onSaveImg">
<image src="../../static/demo/ic_weixin.png" mode="aspectFit"></image>
<text>保存图片</text>
</button>
</view>
<!-- #ifdef H5 -->
<view class="h5_press_save" v-if="h5SaveImg" @click="h5SaveImg = ''">
<image :src="h5SaveImg" mode="widthFix"></image>
<button class="download">长按图片保存图片</button>
</view>
<!-- #endif -->
</view>
</template>
<script>
import { mapState, mapMutations } from 'vuex';
// 文字换行
function drawtext(text, maxWidth) {
let textArr = text.split("");
let len = textArr.length;
// 上个节点
let previousNode = 0;
// 记录节点宽度
let nodeWidth = 0;
// 文本换行数组
let rowText = [];
// 如果是字母,侧保存长度
let letterWidth = 0;
// 汉字宽度
let chineseWidth = 21;
// otherFont宽度
let otherWidth = 10.5;
for (let i = 0; i < len; i++) {
if (/[\u4e00-\u9fa5]|[\uFE30-\uFFA0]/g.test(textArr[i])) {
if(letterWidth > 0){
if(nodeWidth + chineseWidth + letterWidth * otherWidth > maxWidth){
rowText.push({
type: "text",
content: text.substring(previousNode, i)
});
previousNode = i;
nodeWidth = chineseWidth;
letterWidth = 0;
} else {
nodeWidth += chineseWidth + letterWidth * otherWidth;
letterWidth = 0;
}
} else {
if(nodeWidth + chineseWidth > maxWidth){
rowText.push({
type: "text",
content: text.substring(previousNode, i)
});
previousNode = i;
nodeWidth = chineseWidth;
}else{
nodeWidth += chineseWidth;
}
}
} else {
if(/\n/g.test(textArr[i])){
rowText.push({
type: "break",
content: text.substring(previousNode, i)
});
previousNode = i + 1;
nodeWidth = 0;
letterWidth = 0;
}else if(textArr[i] == "\\" && textArr[i + 1] == "n"){
rowText.push({
type: "break",
content: text.substring(previousNode, i)
});
previousNode = i + 2;
nodeWidth = 0;
letterWidth = 0;
}else if(/[a-zA-Z0-9]/g.test(textArr[i])){
letterWidth += 1;
if(nodeWidth + letterWidth * otherWidth > maxWidth){
rowText.push({
type: "text",
content: text.substring(previousNode, i + 1 - letterWidth)
});
previousNode = i + 1 - letterWidth;
nodeWidth = letterWidth * otherWidth;
letterWidth = 0;
}
} else{
if(nodeWidth + otherWidth > maxWidth){
rowText.push({
type: "text",
content: text.substring(previousNode, i)
});
previousNode = i;
nodeWidth = otherWidth;
}else{
nodeWidth += otherWidth;
}
}
}
}
if (previousNode < len) {
rowText.push({
type: "text",
content: text.substring(previousNode, len)
});
}
return rowText;
}
let settingWritePhotosAlbum = false;
export default {
data() {
return {
swiperIndex: 1,
posterImgs: [],
dataInfo: {
priceShop: "¥699.0",
headImgs: [
"http://qn.kemean.cn/file/upload/202005/21/1590043402088i2jxb79n.jpg?imageView2/0/w/800",
"http://qn.kemean.cn/file/upload/202005/21/1590043404759qml3zmlm.jpg?imageView2/0/w/800",
"http://qn.kemean.cn/file/upload/202005/21/1590043407501c6o63bmi.jpg?imageView2/0/w/800",
"http://qn.kemean.cn/file/upload/202005/21/1590043410966jwbtkyw1.jpg?imageView2/0/w/800",
"http://qn.kemean.cn/file/upload/202005/21/1590043413622bnysmgy9.jpg?imageView2/0/w/800"
],
goodsRecommendShare: {
goodsImg: "https://qn.kemean.cn/file/upload/202005/21/1590043402088i2jxb79n.jpg?imageView2/0/w/800",
goodsName: "冰希黎巴黎红精粹沙龙香水50ml",
goodsPrice: "¥699.0",
mainLogo: "https://qn.kemean.cn//file/upload/202005/22/1590138818080cmvg4qnl.png",
recommendCodeGoods: "https://qn.kemean.cn/upload/202007/03/9c6a38df800e46bbba6aede3d84c3427"
},
share: {
shareContent: "商家云系统,点击了解",
shareImg: "http://qn.kemean.cn/file/upload/202005/21/1590043402088i2jxb79n.jpg?imageView2/0/w/800",
shareTitle: "冰希黎巴黎红精粹沙龙香水50ml",
shareUrl: "http://kemean.com/download/3jiayunbz/index.htmlpages/mall/shopPage/goodsDetail?objId=18111505&recommendCode=32029043"
}
},
platformName: "",
h5SaveImg: ""
};
},
//第一次加载
onLoad(e) {
this.platformName = this.$base.platformName;
if (e.objId) {
this.objId = e.objId;
}
},
computed: {
...mapState(["userInfo"])
},
//方法
methods: {
// 轮播图变化
onSwiperChange(e) {
this.swiperIndex = e.detail.current;
},
// 创建海报
createPoster() {
return new Promise((resolve, reject) => {
uni.showLoading({
title: '海报生成中'
});
const ctx = uni.createCanvasContext('poster');
ctx.fillRect(0, 0, 375, 673);
ctx.setFillStyle("#FFF");
ctx.fillRect(0, 0, 375, 673);
uni.downloadFile({
url: this.dataInfo.headImgs[this.swiperIndex],
success: (res) => {
if (res.statusCode === 200) {
ctx.drawImage(res.tempFilePath, 0, 0, 375, 375);
uni.downloadFile({
url: this.dataInfo.goodsRecommendShare.recommendCodeGoods,
success: (res2) => {
if (res.statusCode === 200) {
// 商品标题
ctx.setFontSize(21);
ctx.setFillStyle('#333');
let drawtextList = drawtext(this.dataInfo.goodsRecommendShare.goodsName, 341);
let textTop = 0;
drawtextList.forEach((item,index) => {
if(index < 2){
textTop = 380 + (index + 1) * 28;
ctx.fillText(item.content, 17, textTop);
}
});
// 商品价格
ctx.setFontSize(26);
ctx.setFillStyle('#f00');
ctx.fillText(this.dataInfo.goodsRecommendShare.goodsPrice, 17, textTop + 47);
// 商品门市价
ctx.setFontSize(18);
ctx.setFillStyle('#999');
let textLeft = 38 + (this.dataInfo.goodsRecommendShare.goodsPrice.length * 13)
ctx.fillText(this.dataInfo.priceShop, textLeft, textTop + 45);
// 商品门市价横线
ctx.beginPath();
ctx.setLineWidth(1);
ctx.moveTo(textLeft - 1, textTop + 38);
ctx.lineTo((textLeft + 5 + this.dataInfo.priceShop.length * 9), textTop + 38);
ctx.setStrokeStyle('#999');
ctx.stroke();
// 商品分割线
ctx.beginPath();
ctx.setLineWidth(1);
ctx.moveTo(17, textTop + 70);
ctx.lineTo(358, textTop + 70);
ctx.setStrokeStyle('#eee');
ctx.stroke();
// 长按识别二维码访问
ctx.setFontSize(19);
ctx.setFillStyle('#333');
ctx.fillText("长按识别二维码访问", 17, textTop + 136);
// 平台名称
ctx.setFontSize(16);
ctx.setFillStyle('#999');
ctx.fillText(this.platformName, 17, textTop + 170);
// 二维码
ctx.drawImage(res2.tempFilePath, 238, textTop + 88, 120, 120);
ctx.draw(true, () => {
// canvas画布转成图片并返回图片地址
uni.canvasToTempFilePath({
canvasId: 'poster',
width: 375,
height: 673,
success: (res) => {
if(this.posterImgs[this.swiperIndex]){
this.posterImgs[this.swiperIndex].temporary = res.tempFilePath;
}else{
this.posterImgs[this.swiperIndex] = {
temporary: res.tempFilePath
};
}
console.log("海报制作成功!");
resolve(res.tempFilePath);
},
fail: () => {
uni.hideLoading();
reject();
}
})
});
} else {
uni.hideLoading();
uni.showToast({
title: '海报制作失败,图片下载失败',
icon: 'none'
});
}
},
fail: err => {
uni.hideLoading();
uni.showToast({
title: '海报制作失败,图片下载失败',
icon: 'none'
});
}
});
} else {
uni.hideLoading();
uni.showToast({
title: '海报制作失败,图片下载失败',
icon: 'none'
});
}
},
fail: err => {
uni.hideLoading();
uni.showToast({
title: '海报制作失败,图片下载失败',
icon: 'none'
});
}
});
});
},
// 保存图片
async onSaveImg() {
let imgUrl = "";
if(this.posterImgs[this.swiperIndex] && this.posterImgs[this.swiperIndex].temporary){
imgUrl = await this.posterImgs[this.swiperIndex].temporary;
}else{
imgUrl = await this.createPoster();
}
// #ifdef H5
this.h5SaveImg = imgUrl;
uni.hideLoading();
// #endif
// #ifdef MP-WEIXIN
uni.showLoading({
title: '海报下载中'
});
if (settingWritePhotosAlbum) {
uni.getSetting({
success: res => {
if (res.authSetting['scope.writePhotosAlbum']) {
uni.saveImageToPhotosAlbum({
filePath: imgUrl,
success: () => {
uni.hideLoading();
uni.showToast({
title: '保存成功'
});
}
});
} else {
uni.showModal({
title: '提示',
content: '请先在设置页面打开“保存相册”使用权限',
confirmText: '去设置',
cancelText: '算了',
success: data => {
if (data.confirm) {
uni.hideLoading();
uni.openSetting();
}
}
});
}
}
});
} else {
settingWritePhotosAlbum = true;
uni.authorize({
scope: 'scope.writePhotosAlbum',
success: () => {
uni.saveImageToPhotosAlbum({
filePath: imgUrl,
success: () => {
uni.hideLoading();
uni.showToast({
title: '保存成功'
});
}
});
}
});
}
// #endif
// #ifdef APP-PLUS
uni.showLoading({
title: '海报下载中'
});
uni.saveImageToPhotosAlbum({
filePath: imgUrl,
success: () => {
uni.hideLoading();
uni.showToast({
title: '保存成功'
});
}
});
// #endif
},
async onAppShare() {
// let imgUrl = "";
// if(this.posterImgs[this.swiperIndex] && this.posterImgs[this.swiperIndex].url){
// imgUrl = this.posterImgs[this.swiperIndex].url;
// } else if(this.posterImgs[this.swiperIndex] && this.posterImgs[this.swiperIndex].temporary){
// let imgData = await this.$http.qnFileUpload([this.posterImgs[this.swiperIndex].temporary]);
// imgUrl = imgData[0];
// }else{
// let data = await this.createPoster();
// let imgData = await this.$http.qnFileUpload([data]);
// imgUrl = imgData[0];
// }
// uni.hideLoading();
uni.share({
provider: 'weixin',
scene: 'WXSceneSession',
type: 0,
title: this.dataInfo.share.shareTitle,
href: this.dataInfo.share.shareUrl,
summary: this.dataInfo.share.shareContent,
imageUrl: this.dataInfo.share.shareImg,
success: function(res) {
console.log('success:' + JSON.stringify(res));
},
fail: function(err) {
console.log('fail:' + JSON.stringify(err));
}
});
}
},
//页面隐藏
onHide() {},
//页面卸载
onUnload() {},
//页面下来刷新
onPullDownRefresh() {},
//页面上拉触底
onReachBottom() {},
//用户点击分享
onShareAppMessage(e) {
let dataInfo = this.dataInfo;
let shareInfo = {
path: "/pages/home/shop/goodsDetail?objId="+dataInfo.objId,
title: dataInfo.share.shareTitle,
imageUrl: dataInfo.share.shareImg
};
if(this.userInfo.token){
shareInfo.path += "&recommendCode=" + this.userInfo.uid;
}
console.log(shareInfo);
return shareInfo;
}
};
</script>
<style lang="scss" scoped>
@import '@/style/mixin.scss';
.poster_page {
min-height: 100vh;
background-color: #f5f5f5;
display: flex;
align-items: center;
}
.poster_canvas {
width: 100vw;
height: 100vh;
position: fixed;
top: -10000rpx;
left: 0rpx;
}
.poster_swiper {
height: 950rpx;
width: 100%;
swiper-item {
box-sizing: border-box;
display: flex;
align-items: center;
.goods_info_box {
width: 100%;
height: 100%;
transform: scale(0.88);
transition: all 0.4s;
position: relative;
overflow: hidden;
background-color: #FFFFFF;
&.active {
transform: scale(1);
}
.goods_image {
width: 100%;
height: calc(100vw - 220rpx);
}
.goods_info {
padding: 24rpx;
.goods_name {
color: #333;
font-size: 30rpx;
@include bov(2);
}
.price_box {
margin-top: 24rpx;
display: flex;
align-items: center;
.price {
font-size: 38rpx;
color: red;
}
.store_price {
margin-left: 30rpx;
font-size: 26rpx;
color: #999;
text-decoration: line-through;
}
}
.poster_info {
border-top: 2rpx solid #f1f1f1;
padding-top: 24rpx;
margin-top: 24rpx;
display: flex;
align-items: center;
justify-content: space-between;
.info {
display: flex;
flex-direction: column;
view {
color: #333;
font-size: 28rpx;
}
text {
color: #999;
font-size: 24rpx;
margin-top: 20rpx;
}
}
.poster_code_image {
width: 170rpx;
height: 170rpx;
flex-shrink: 0;
}
}
}
}
}
}
.share_save_box {
position: fixed;
bottom: calc((100vh - 950rpx - 240rpx) / 4);
left: 0;
z-index: 6;
width: 100%;
display: flex;
justify-content: space-around;
button {
display: flex;
flex-direction: column;
align-items: center;
background-color: transparent;
image {
width: 60rpx;
height: 60rpx;
}
text {
font-size: 24rpx;
color: #333333;
}
}
}
.h5_press_save {
background-color: #000;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
display: flex;
align-items: center;
z-index: 100;
image {
width: 100%;
}
.download {
font-size: 24rpx;
color: #ffffff;
background-color: rgba(0,0,0,0.5);
display: flex;
align-items: center;
flex-direction: row;
justify-content: center;
position: absolute;
padding: 5rpx 30rpx;
border-radius: 40rpx;
bottom: 30rpx;
left: 50%;
transform: translateX(-50%);
&:before {
content: '';
@include bis('../../static/demo/icon_download.png');
width: 24rpx;
height: 24rpx;
margin-right: 15rpx;
}
}
}
</style>