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更换贺报下载的方法2

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xuxingjun
2024-12-25 10:10:46 +08:00
parent ba7ee05264
commit a36dd38fad
1 changed files with 19 additions and 33 deletions
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52
src/views/ebiz/generateImg/generateImg.vue
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@@ -222,43 +222,21 @@ export default {
captureAndProcessImage();
},
downloadFn() {
const clientWidth = this.$refs.generateImg.offsetWidth;//获取容易的宽高
const clientWidth = this.$refs.generateImg.offsetWidth;
const clientHeight = this.$refs.generateImg.offsetHeight;
let canvas = document.createElement("canvas");//创建Canvas对象
var scale = 2;//用于渲染的比例。默认为浏览器设备像素比率
canvas.width = clientWidth * scale;
canvas.height = clientHeight * scale;
const ops = {
width: clientWidth,//画布的宽度
height: clientHeight,//画布的高度
// 跨域配置
useCORS: true, // 使用跨域
allowTaint: true, // 允许使用跨域资源
tainTest: false,
scale: scale,
backgroundColor: null,
};
html2canvas(this.$refs.generateImg, ops).then((canvas) => {
// 转成图片，生成图片地址
this.imgUrl = canvas.toDataURL("image/png");
this.download(this.imgUrl, [canvas.width, canvas.height]);
});
},
download(imgUrl, kh) {
this.getUrlBase64(imgUrl, kh).then((base64) => {
const link = document.createElement("a");
link.href = base64;
link.download = `图片.png`;
link.click();
const kh = [clientWidth, clientHeight];
html2canvas(this.$refs.generateImg, { useCORS: true, logging: true }).then((canvas) => {
const dataURL = canvas.toDataURL('image/png');
this.download(dataURL, kh);
});
},
getUrlBase64(url, kh) {
return new Promise((resolve) => {
let canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
let canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
const img = new Image();
img.crossOrigin = "Anonymous"; // 允许跨域
img.crossOrigin = 'Anonymous'; // 允许跨域
img.src = url;
img.onload = () => {
// eslint-disable-next-line prefer-destructuring
@@ -266,13 +244,21 @@ export default {
// eslint-disable-next-line prefer-destructuring
canvas.width = kh[0];
ctx.drawImage(img, 0, 0, kh[0], kh[1]);
const dataURL = canvas.toDataURL("image/png");
const dataURL = canvas.toDataURL('image/png');
canvas = null;
resolve(dataURL);
this.$toast('下载成功')
};
});
},
download(imgUrl, kh) {
this.getUrlBase64(imgUrl, kh).then((base64) => {
const link = document.createElement('a');
link.href = base64;
link.download = `业绩贺报.png`;
link.click();
this.$toast('下载成功')
});
},
close() {
this.$emit('child-colse', '1')
this.$refs.generateImg.src = '';