生成海报逻辑待完善
This commit is contained in:
Andy Leong
parent
da38f8c271
commit
3c258cff70
@ -3,6 +3,7 @@ import { gsap } from "gsap";
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import { debounceTap } from "@/plugins";
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import { useMainStore } from "@/store";
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import { mbtiList } from "@/data";
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import { posterCreate } from '@/plugins'
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// 页面配置初始化
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const emit = defineEmits(["ResultPage"]);
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@ -31,6 +32,21 @@ const changBg = (event, number) => {
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0.3
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);
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};
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const createPoster = (event) => {
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let e = event.target
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debounceTap(e, () => {
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let saveImg = posterCreate(
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{ width: 750, height: 1450 },
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[
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new URL(`@/assets/images/result/bg-2.jpg`, import.meta.url).href,
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new URL(`@/assets/images/qa/question.png`, import.meta.url).href,
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new URL(`@/assets/images/qa/showResult-btn.png`, import.meta.url).href
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]
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)
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console.log('saveImg', saveImg);
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}, 0.4)
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}
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</script>
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<template>
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@ -41,15 +57,14 @@ const changBg = (event, number) => {
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<div class="result-container">
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结果页:{{ mbti || "没结果" }}
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<div class="bg-tab">
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<div
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:class="{ active: bgId == item }"
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v-for="item in 4"
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class="li"
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@click="changBg($event, item)"
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>
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<div :class="{ active: bgId == item }" v-for="item in 4" class="li" @click="changBg($event, item)">
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{{ item }}
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</div>
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</div>
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<div @click="createPoster($event)">生成海报</div>
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<div style="width: 500px;height: 700px;">
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<img class="pic" src="" alt="" srcset="">
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</div>
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</div>
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</div>
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</template>
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@ -66,7 +66,7 @@ const drawFn = (item) => {
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}
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};
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const showResult = ref(false);
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const showResult = ref(true);
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const resultFn = (item) => {
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if (item.action == "hide") {
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showResult.value = false;
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@ -432,67 +432,63 @@ export function mostValue(arr) {
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// 海报生成
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export function createPoster(option, arr) {
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export function posterCreate(option, imageArr) {
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const { width, height } = option
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console.log('createPoster');
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/////////////////////////
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let mycanvas = document.createElement('canvas'), // 创建一个canvas画布元素
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ctx = mycanvas.getContext('2d');
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mycanvas.width = width; //设置canvas的宽
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mycanvas.height = height; //设置canvas的高
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const img_src_Arr = [ //需要预加载的资源，比如海报的背景图、二维码、头像等需要用的图像都要先预加载
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require('../img/img_' + this.anniversary + '.jpg'), //加载背景图
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// this.poster_bg,
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]
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//Promise对象加载资源
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let loader_p = [];
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img_src_Arr.forEach((ev, index) => {
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imageArr.map((item) => {
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const _p = new Promise(resolve => {
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const img = new Image();
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img.crossOrigin = 'Anonymous'
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img.onload = () => {
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resolve(img)
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};
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img.src = ev;
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img.src = item;
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});
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loader_p.push(_p);
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});
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})
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// imageArr.forEach((ev, index) => {
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// const _p = new Promise(resolve => {
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// const img = new Image();
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// img.crossOrigin = 'Anonymous'
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// img.onload = () => {
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// resolve(img)
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// };
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// img.src = ev;
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// });
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// loader_p.push(_p);
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// });
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//Promise的.all方法，当所有预加载的图像加载好的回调函数
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Promise.all(loader_p)
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.then(img_Arr => {
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const poster = img_Arr[0]; //声明一个对象替代刚刚加载的资源
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console.log('======开始绘制海报======)');
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this.tHeight = 985
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if (this.anniversary == 2) {
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this.tHeight = 998
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}
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console.log('daihui:', img_Arr);
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// 画海报
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ctx.drawImage(poster, 0, 0, mycanvas.width, mycanvas.height); //原生canvas的绘制图片方法，直接百度搜索 `js drawImage`查看方法的参数
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// 画签文
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ctx.fillStyle = '#524426'; //原生canvas的绘制文字方法,属性类似css，确定好文字颜色、粗细、字号、字体、对齐方式
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ctx.font = 'bold 28px arial'; // normal bold
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ctx.textAlign = 'start'; //type2
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ctx.rotate(-8 * Math.PI / 180);
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ctx.fillText('@' + this.userName, 40, this.tHeight); //绘制文字
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// ctx.fillStyle = '#524426'; //原生canvas的绘制文字方法,属性类似css，确定好文字颜色、粗细、字号、字体、对齐方式
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// ctx.font = 'bold 28px arial'; // normal bold
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// ctx.textAlign = 'start'; //type2
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// ctx.rotate(-8 * Math.PI / 180);
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// ctx.fillText('@' + this.userName, 40, this.tHeight); //绘制文字
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//海报绘制完 ，转成图片对象
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return mycanvas.toDataURL('image/jpeg', 0.85);
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return mycanvas.toDataURL('image/jpeg', 1);
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})
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.then(baseURL => {
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//返回的图片地址，就是最后海报的地址，可以放在DOM显示
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console.log('海报生成完毕 that.posterIsInit');
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that.posterUrl = true;
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$('#savePoster').attr('src', baseURL);
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console.log('海报生成完毕 that.posterIsInit', baseURL);
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// let img = document.querySelector('#pic')
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// img.src = baseURL
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// return baseURL
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})
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}
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