downloadPicture(imgSrc, name) {
const image = new Image();
// 解决跨域 Canvas 污染问题
image.setAttribute("crossOrigin", "anonymous");
image.src = imgSrc;
image.onload = () => {
const canvas = document.createElement("canvas");
canvas.width = image.width;
canvas.height = image.height;
const context = canvas.getContext("2d");
context.drawImage(image, 0, 0, image.width, image.height);
canvas.toBlob((blob) => {
const url = URL.createObjectURL(blob);
const a = document.createElement("a");
a.download = name || "photo";
a.href = url;
a.click();
a.remove();
URL.revokeObjectURL(url);
});
};
},
downLineFlow(row) {
this.downloadPicture(row.signatureUrl, row.username);
},