1.22

user/utils/debounce.js

@@ -0,0 +1,15 @@
+function debounce(fn,wait=1500){
+  var flag = true;
+  var timer = null;
+  return function(){
+    if(flag) {
+      fn.apply(this,arguments);
+      flag = false;
+      timer = setTimeout(() => {
+        flag = true
+      },wait)
+    }
+  }
+}
+
+export default debounce

user/utils/fileutil.js

@@ -0,0 +1,91 @@
+const FileUtil = {
+
+  //file 为微信file 单文件
+  getFileName(file){
+    // size: 132224
+    // thumb: "http://tmp/0ftStiYfd18K517836423bbfde024c385140a666b344.png"
+    // type: "image"
+    // url: "http://tmp/0ftStiYfd18K517836423bbfde024c385140a666b344.png"
+
+    if(file){
+      const uuid = this.UUID().replace("/-/g","");
+      if(file.url && (file.url.indexOf(".") > -1)){
+        const fileType = file.url.split(".")[1];
+        return uuid+"."+fileType;
+      }else{
+        return;
+      }
+    }
+    return;
+  },
+
+  UUID () {
+    if (typeof crypto === 'object') {
+      if (typeof crypto.randomUUID === 'function') {
+        return crypto.randomUUID();
+      }
+      if (typeof crypto.getRandomValues === 'function' && typeof Uint8Array === 'function') {
+        const callback = (c) => {
+          const num = Number(c);
+          return (num ^ (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (num / 4)))).toString(16);
+        };
+        return ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, callback);
+      }
+    }
+    let timestamp = new Date().getTime();
+    let perforNow = (typeof performance !== 'undefined' && performance.now && performance.now() * 1000) || 0;
+    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+      let random = Math.random() * 16;
+      if (timestamp > 0) {
+        random = (timestamp + random) % 16 | 0;
+        timestamp = Math.floor(timestamp / 16);
+      } else {
+        random = (perforNow + random) % 16 | 0;
+        perforNow = Math.floor(perforNow / 16);
+      }
+      return (c === 'x' ? random : (random & 0x3) | 0x8).toString(16);
+    });
+  },
+
+  canvasToFile(){
+    let canvas = window.map3DControl.viewer.canvas;
+    let imgWidth = 1920;
+    let img = Canvas2Image.convertToImage(
+      canvas,
+      imgWidth,
+      (imgWidth * canvas.height) / canvas.width,
+      "png"
+    );
+    let file_name = new Date().getTime() + ".png";
+    let imgsrc = img.src.slice(22)
+    
+    let file = this.convertBase64UrlToImgFile(
+      imgsrc,
+      file_name,
+      "image/png"
+    )
+    return file;
+  },
+  
+  convertBase64UrlToImgFile(urlData, fileName, fileType) {
+    urlData = urlData.replace(/^data:image\/\w+;base64,/, "");
+    let bytes = wx.base64ToArrayBuffer(urlData);
+
+    // var bytes = wx.atob(urlData); //转换为byte
+    //处理异常,将ascii码小于0的转换为大于0
+    var ab = new ArrayBuffer(bytes.length);
+    var ia = new Int8Array(ab);
+    var i;
+    for (i = 0; i < bytes.length; i++) {
+      ia[i] = bytes.charCodeAt(i);
+    }
+    //转换成文件，添加文件的type，name，lastModifiedDate属性
+    var blob = new Blob([ab], { type: fileType });
+    blob.lastModifiedDate = new Date();
+    blob.name = fileName;
+    return blob;
+  }
+}
+
+
+export { FileUtil }