详解基于electron制作一个node压缩图片的桌面应用

const imagemin = require('imagemin')
const imageminMozjpeg = require('imagemin-mozjpeg')
const imageminPngquant = require('imagemin-pngquant')
const imageminGifsicle = require('imagemin-gifsicle')

async function compass(input, output, opts, callback) {
  let log = await imageminCompass(input, output, opts)
  callback(log)
}

async function imageminCompass(input, output = 'temp', opts = {}) {
  input = (typeof input == 'string') ? [input] : input;
  return await imagemin(input, output, {
      use: [
        imageminMozjpeg(opts),
        imageminPngquant(opts),
        imageminGifsicle({
          optimizationLevel:3
        })
      ]
    })
    .then(file => {
      return {
        status: true,
        data: file
      };
    })
    .catch(e => {
      console.log(e);
      return {
        status: false,
        error: e.toString()
      }
    });
}

module.exports = {
  compass: compass
};

<script src="./src/jquery.min.js"></script>
<script>if (typeof module === 'object') {window.jQuery = window.$ = module.exports;};</script>

<button id="input-btn">选择路径</button>

const {ipcRenderer} = require('electron')
const inputBtn = document.getElementById('input-btn')

inputBtn.addEventListener('click', (event) => {
  console.log('点击输入按钮')
  ipcRenderer.send('open-file-dialog-input')
})

ipcRenderer.on('input-path', (event, path) => {
  console.log(`收到完成信息 ${path}`)
  _inputPath = path
  inputPath.value = `${path}`
})

ipcMain.on('open-file-dialog-input', (event) => {
  dialog.showOpenDialog({
    properties: ['openFile', 'openDirectory']
  }, (files) => {
    if (files) {
      console.log('发出完成信息')
      event.sender.send('input-path', files)
    }
  })
})

<!--可拖入区域-->
<div id="holder" class="jumbotron holder">
</div>
<style>
    /* 拖拽的区域样式 */
    .holder {
      min-height: 200px;
      background: #eee;
      margin: 2em;
      padding: 1em;
      border: 0px dotted #eee;
      border-radius: 10px;
      transition: .3s all ease-in-out;
    }

    /* 拖拽时用jQuery为其添加边框样式的class */
    .holder-ondrag {
      border: 20px dotted #d45700;
    }
</style>

const holder = document.getElementById("holder")

holder.ondragenter = holder.ondragover = (event) => {
  event.preventDefault()
  holder.className = "jumbotron holder-ondrag"
}

holder.ondragleave = (event) => {
  event.preventDefault()
  holder.className = "jumbotron holder"
}

holder.ondrop = (event) => {
  // 调用 preventDefault() 来避免浏览器对数据的默认处理
  //（drop 事件的默认行为是以链接形式打开
  event.preventDefault()
  holder.className = "jumbotron holder"
  var file = event.dataTransfer.files[0]
  _inputPath = inputPath.value = file.path
}

//mac
electron-packager . --out=out --platform=mas --arch=x64
//win
electron-packager . --platform=win32 --arch=x64