refactor: 改善剪贴板监听性能 修复大图卡顿与CPU高占用的问题

public/node_modules/clipboard-event/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Sudhakar R
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

public/node_modules/clipboard-event/index.js

@@ -0,0 +1,29 @@
+const { EventEmitter } = require('events');
+const path = require('path');
+const { execFile } = require('child_process');
+
+class ClipboardEventListener extends EventEmitter {
+  constructor() {
+    super();
+    this.child = null;
+  }
+  startListening() {
+    const { platform } = process;
+    const file = `platform/clipboard-event-handler-${platform}${platform === 'win32' ? '.exe' : ''}`
+    if(platform !== 'win32' && platform !== 'darwin' && platform !== 'linux') {
+      throw new Error(`ClipboardEventListener is not supported on ${platform}`);
+    }
+    this.child = execFile(path.join(__dirname, file));
+    this.child.stdout.on('data', (data) => {
+      if (data.trim() === 'CLIPBOARD_CHANGE') {
+        this.emit('change');
+      }
+    });
+  }
+  stopListening() {
+    const res = this.child.kill();
+    return res;
+  }
+}
+
+module.exports = new ClipboardEventListener();

public/preload.js

@@ -6,19 +6,13 @@
 
 const fs = require('fs')
 const crypto = require('crypto')
+const listener = require('clipboard-event')
 const { clipboard } = require('electron')
-const time = require('./time')
 
-const homePath = utools.getPath('home')
-const userDataPath = utools.getPath('userData')
-const dbName = '_utools_clipboard_manager_storage'
-
-const isMacOs = utools.isMacOs()
-const isWindows = utools.isWindows()
-const sep = isWindows ? '\\' : '/'
-const DBPath = `${isMacOs ? userDataPath : homePath}${sep}${dbName}`
-
-let globalImageOversize = false
+const sep = utools.isWindows() ? '\\' : '/'
+const DBPath = `${
+  utools.isMacOs() ? utools.getPath('userData') : utools.getPath('home')
+}${sep}_utools_clipboard_manager_storage`
 
 class DB {
   constructor(path) {
@@ -133,7 +127,6 @@ const pbpaste = () => {
   // image
   const image = clipboard.readImage() // 大图卡顿来源
   const data = image.toDataURL()
-  globalImageOversize = data.length > 3e5
   if (!image.isEmpty()) {
     return {
       type: 'image',
@@ -142,24 +135,6 @@ const pbpaste = () => {
   }
 }
 
-const watchClipboard = async (db, fn) => {
-  let prev = db.dataBase.data[0] || {}
-  function loop() {
-    time.sleep(250).then(loop)
-    const item = pbpaste()
-    if (!item) return
-    item.id = crypto.createHash('md5').update(item.data).digest('hex')
-    if (item && prev.id != item.id) {
-      // 剪切板元素 与最近一次复制内容不同
-      prev = item
-      fn(item)
-    } else {
-      // 剪切板元素 与上次复制内容相同
-    }
-  }
-  loop()
-}
-
 const copy = (item, isHideMainWindow = true) => {
   switch (item.type) {
     case 'text':
@@ -221,9 +196,12 @@ const focus = (isBlur = false) => {
 const toTop = () => (document.scrollingElement.scrollTop = 0)
 const resetNav = () => document.querySelectorAll('.clip-switch-item')[0]?.click()
 
-watchClipboard(db, (item) => {
-  // 此函数不断执行
+listener.startListening()
+
+listener.on('change', () => {
+  const item = pbpaste()
   if (!item) return
+  item.id = crypto.createHash('md5').update(item.data).digest('hex')
   if (db.updateItemViaId(item.id)) {
     // 在库中 由 updateItemViaId 更新 updateTime
     return
@@ -235,10 +213,6 @@ watchClipboard(db, (item) => {
 })
 
 utools.onPluginEnter(() => {
-  if (globalImageOversize) {
-    utools.copyText('ImageOverSized')
-    globalImageOversize = false
-  }
   toTop()
   resetNav()
 })

public/time.js

@@ -1,2 +0,0 @@
-// time.js author: inu1255
-const path=require("path");function newPromise(fn){let a,b;var tmp={resolve(x){if(this.pending){a(x);this.resolved=true;this.pending=false}},reject(e){if(this.pending){b(e);this.rejectd=true;this.pending=false}},pending:true,resolved:false,rejected:false};var pms=new Promise(function(resolve,reject){a=resolve;b=reject;if(fn)fn(tmp.resolve,tmp.reject)});return Object.assign(pms,tmp)}let cbIdx=1;const cbMap=new Map;function getWorker(){if(getWorker.worker)return getWorker.worker;const worker=new Worker(path.join(__dirname,"time.worker.js"));getWorker.worker=worker;worker.onmessage=e=>{if(e.data&&cbMap.has(e.data.cb)){cbMap.get(e.data.cb).apply(null,e.data.args)}};return worker}function call(method,args){const cb=cbIdx++;let pms=newPromise();cbMap.set(cb,function(err,data){if(err)pms.reject(err);else pms.resolve(data)});getWorker().postMessage({method:method,args:args,cb:cb});return pms}function sleep(ms){return call("sleep",[ms])}exports.sleep=sleep;

public/time.worker.js

@@ -1,2 +0,0 @@
-// time.worker.js author: inu1255
-const apis={sleep(ms){return new Promise(resolve=>setTimeout(resolve,ms))}};onmessage=event=>{const data=event.data;if(!data)return;const{cb,method,args}=data;if(!apis[method]){postMessage({cb:cb,err:"no such method"});return}apis[method].apply(null,args).then(res=>postMessage({cb:cb,data:res}),err=>postMessage({cb:cb,err:err}))};