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js_sdk/u-draw-poster/utils/wx-utils.js

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+/*
+ * @Author: Mr.Mao
+ * @LastEditors: Mr.Mao
+ * @Date: 2020-10-12 08:49:27
+ * @LastEditTime: 2020-12-09 13:54:10
+ * @Description:
+ * @任何一个傻子都能写出让电脑能懂的代码，而只有好的程序员可以写出让人能看懂的代码
+ */
+import uni from "./global";
+import { isBaseUrl, isNetworkUrl, isTmpUrl } from './utils';
+// 下载指定地址图片, 如果不符合下载图片, 则直接返回
+export const downloadImgUrl = (url) => {
+    const isLocalFile = isBaseUrl(url) || isTmpUrl(url) || !isNetworkUrl(url);
+    return new Promise((resolve, reject) => {
+        if (isLocalFile) {
+            return resolve(url);
+        }
+        uni.downloadFile({
+            url,
+            success: (res) => resolve(res.tempFilePath),
+            fail: reject
+        });
+    });
+};
+// 获取当前指定 node 节点
+export const getCanvas2dContext = (selector, componentThis) => {
+    return new Promise(resolve => {
+        const query = (componentThis ?
+            uni.createSelectorQuery().in(componentThis) :
+            uni.createSelectorQuery());
+        query.select(selector)
+            .fields({ node: true }, res => {
+            const node = res === null || res === void 0 ? void 0 : res.node;
+            resolve(node || {});
+        }).exec();
+    });
+};