Electron无边框自定义窗口拖动的问题小结

最近使用了electron框架，发现如果自定义拖动是比较实用的;特别是定制化比较高的项目，如果单纯的使用-webkit-app-region: drag;会让鼠标事件无法触发;

过程中发现问题：

1.windows缩放不是100%后设置偏移界面会缩放，感觉像吹起的气球;

2.单纯的添加css;-webkit-app-region: drag; 会让鼠标事件无法触发;

封装核心方法

import { screen } from \’electron\’
/* 自定义窗口移动 */
export class AzCustomWindowMove {
// 是否开启
isOpen: boolean;
// 传入要处理的窗口
win: any;
// 窗口偏移
winStartPosition: {
x: number, y: number, width: number, height: number,
}
// 现在鼠标所在位置
startPosition: {
x: number, y: number,
}
constructor() {
this.isOpen = false;
this.win = null;
this.winStartPosition = {
x: 0,
y: 0,
width: 0,
height: 0,
}
this.startPosition = {
x: 0,
y: 0,
}
}
init(win: any) {
this.win = win;
}
start() {
this.isOpen = true;
// 获取当前窗口偏移[x, y]
const winPosition = this.win.getPosition();
// 获取当前缩放[width, height]
const winSize = this.win.getSize();
this.winStartPosition.x = winPosition[0];
this.winStartPosition.y = winPosition[1];
this.winStartPosition.width = winSize[0];
this.winStartPosition.height = winSize[1];
// 获取鼠标绝对位置
const mouseStartPosition = screen.getCursorScreenPoint();
this.startPosition.x = mouseStartPosition.x;
this.startPosition.y = mouseStartPosition.y;
// 开启刷新
this.move();
}
move() {
if (!this.isOpen) {
return;
};
console.log(\’this.win.isDestroyed()\’, this.win.isDestroyed(), this.win.isFocused());
// 如果窗口已销毁
if (this.win.isDestroyed()) {
this.end();
return;
}
// 判断窗口是否聚焦
if (!this.win.isFocused()) {
this.end();
return;
}
const cursorPosition = screen.getCursorScreenPoint();
const x = this.winStartPosition.x + cursorPosition.x – this.startPosition.x;
const y = this.winStartPosition.y + cursorPosition.y – this.startPosition.y;
// this.win.setPosition(120, 120, false);
// this.win.setBounds({x: 120, y: 120})
// 更新位置的同时设置窗口原大小， windows上设置=>显示设置=>文本缩放不是100%时，窗口会拖拽放大
this.win.setBounds({
x: x,
y: y,
width: this.winStartPosition.width,
height: this.winStartPosition.height,
})
setTimeout(() => {
this.move();
}, 20)
}
end() {
this.isOpen = false;
}
}

在main.js中引入

import { AzCustomWindowMove } from \’./util\’;
/* new 自定义窗口移动 */
const CustomWindowMove = new AzCustomWindowMove();
// 创建一个窗口
const mainWindow = new BrowserWindow({
frame: false,
webPreferences: {
preload: join(__dirname, \’../preload/index.js\’),
sandbox: false
}
})
// 将窗口传进去
CustomWindowMove.init(mainWindow)
// 通信监听
ipcMain.on(\”Main_Window_Operate\”, (event, info) => {
const operateEvent = info.event || \’\’;
switch(operateEvent) {
// 拖拽窗口-开始
case \’homeDragWindowStart\’:
{
/*
如果别的窗口也想复用这个自定义拖拽方法可以这么用;
const webContents = event.sender;
const win = BrowserWindow.fromWebContents(webContents);
CustomWindowMove.init(win);
CustomWindowMove.start();
*/
CustomWindowMove.start();
}
break;
// 拖拽窗口-结束
case \’homeDragWindowEnd\’:
{
CustomWindowMove.end();
}
break;
default:
break;
}
})

preload.ts 预加载脚本

import { contextBridge, ipcRenderer } from \’electron\’
import { electronAPI } from \’@electron-toolkit/preload\’
…
contextBridge.exposeInMainWorld(\’customAPI\’, {
/**
* 发布main窗口操作消息
* @param info {type: 操作类型, data: 参数}
*/
publishMainWindowOperateMessage: (info: {event: string, data: {}}) => {
ipcRenderer.send(\”Main_Window_Operate\”, info);
}
})
…

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