Tauri真的是又轻又快，但由于初次使用不熟难免遇到坑。
一、虚拟键盘触摸屏之坑
ubuntu系统是一个触摸屏，不能接入键盘和鼠标，所以界面上的操作输入都是通过虚拟键盘实现。代码使用的是react-simple-keyboard 组件
import { Button } from 'antd';
import { CloseOutlined } from '@ant-design/icons';
import React, { useRef } from 'react';
import { omit } from 'lodash';
import Keyboard from 'react-simple-keyboard';
import chineseLayout from "simple-keyboard-layouts/build/layouts/chinese";
import 'react-simple-keyboard/build/css/index.css';
interface RhKeyboardProps {
show: boolean;
onClose: () => void;
init?: (r: any) => void;
onChange: (input: string) => void;
layoutType?: string;
}
// 添加自定义布局配置
const keyboardLayout = {
default: [
"` 1 2 3 4 5 6 7 8 9 0 - = {bksp}",
"{tab} q w e r t y u i o p [ ] \\",
"{lock} a s d f g h j k l ; ' {enter}",
"{shift} z x c v b n m , . / {shift}",
"{space}",
],
shift: [
"~ ! @ # $ % ^ & * ( ) _ + {bksp}",
"{tab} Q W E R T Y U I O P { } |",
'{lock} A S D F G H J K L : " {enter}',
"{shift} Z X C V B N M < > ? {shift}",
"{space}",
],
...chineseLayout.layout // 保留中文布局
};
export const RhKeyboard: React.FC<RhKeyboardProps> = ({
show,
onClose,
init,
onChange,
layoutType,
}) => {
const keyboardRef = useRef<any>(null);
if (!show) return null;
return (
<div className="fixed bottom-0 left-0 w-full z-50 bg-gray-100"
onTouchStart={(e) => e.stopPropagation()}
onTouchMove={(e) => e.preventDefault()}
>
<div className="flex justify-end p-2">
<Button
type="text"
icon={<CloseOutlined />}
onClick={onClose}
style={{ color: '#000' }}
/>
</div>
<Keyboard
keyboardRef={(r) => {
(keyboardRef.current = r);
init?.(r);
}}
layout={keyboardLayout}
{...(layoutType === 'chinese' ? omit(chineseLayout, 'layout') : {})}
layoutName="default"
onChange={onChange}
useTouchEvents={true} // 启用触摸事件支持
// useMouseEvents={true} // 启用鼠标事件
disableCaretPositioning={true} // 禁用光标定位，避免触摸冲突
onKeyPress={(button: string) => {
if (button === "{shift}") {
const currentLayout = keyboardRef.current.options.layoutName;
const layoutName = currentLayout === "default" ? "shift" : "default";
keyboardRef.current.setOptions({ layoutName });
}
}}
theme="hg-theme-default custom-keyboard"
buttonTheme={[
{
class: "hg-red",
buttons: "{shift} {lock}"
}
]}
display={{
"{bksp}": "退格",
"{enter}": "回车",
"{shift}": "Shift",
"{space}": "空格",
"{tab}": "Tab",
"{lock}": "Lock"
}}
/>
</div>
);
};
二、自动启动服务之坑
需求是开机自动启动服务并且让软件全屏，这样ubuntu的系统的盒子就像一个定制好软件的系统了。
leekhub-ui.service
[Unit]
Description=Sanyems UI Service
After=network.target
StartLimitIntervalSec=60
StartLimitBurst=3
[Service]
Environment=DISPLAY=:0
Environment=XAUTHORITY=/home/ubuntu/.Xauthority
Environment=RUST_BACKTRACE=1
ExecStartPre=/bin/bash -c 'export DISPLAY=:0; export XAUTHORITY=/home/ubuntu/.Xauthority'
ExecStart=/usr/bin/leekhub-ui
Restart=always
User=ubuntu
RestartSec=5
[Install]
WantedBy=multi-user.target
其中缺少这2行代码，脚本服务启动失败。
message: "failed to initialize gtk", filename: "/home/ubuntu/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/gtk-0.18.2/src/rt.rs", function: "gtk::rt::init", line: 141
Environment=DISPLAY=:0
Environment=XAUTHORITY=/home/ubuntu/.Xauthority
执行 sudo -u ubuntu /usr/bin/leekhub-ui 测试手动启动是否成功，注意这里的-u 指定的用户和配置文件里的User要一致，不然可能有权限问题。
权限问题则执行 sudo chown user:user /usr/bin/leekhub-ui 的方式，命令表示用户组 user，具体根据系统用户情况修改。
export DISPLAY=:0
export XAUTHORITY=/home/user/.Xauthority
source .bashrc
sudo -u user /usr/bin/leekhub-ui
如果是GTK异常，则需要安装依赖
sudo apt install libgdk-pixbuf2.0-dev libpango1.0-dev libcairo2-dev
配置文件
以下是 tauri.conf.json 代码，其中 postInstallScript 是deb包安装完成后执行的开机自动启动脚本。
{
"$schema": "https://schema.tauri.app/config/2",
"productName": "leekhub-ui",
"version": "0.2.0",
"identifier": "com.leekhub.ems",
"mainBinaryName": "leekhub-ui",
"build": {
"frontendDist": "../dist",
"devUrl": "http://localhost:3500",
"beforeDevCommand": "pnpm dev",
"beforeBuildCommand": "pnpm build"
},
"app": {
"withGlobalTauri": true,
"windows": [
{
"title": "sanyems-ui",
"width": 1280,
"height": 800,
"resizable": true,
"fullscreen": false,
"devtools": true
}
],
"security": {
"csp": null,
"capabilities": [
{
"identifier": "custom-permision",
"windows": [
"*"
],
"permissions": [
"core:window:allow-create",
"core:window:allow-close",
"core:webview:allow-create-webview",
"core:webview:allow-webview-close",
"core:webview:allow-create-webview-window"
],
"allowlist": {
"http": {
"all": true,
"request": true,
"scope": [
"http://127.0.0.1:1880/ws/*",
"http://127.0.0.1:9001/api/history/*",
"http://127.0.0.1:9001/api/auth/*"
]
},
"protocol": {
"asset": true,
"assetScope": [
"**"
]
}
}
}
]
}
},
"bundle": {
"active": true,
"targets": "all",
"icon": [
"icons/32x32.png",
"icons/128x128.png",
"icons/128x128@2x.png",
"icons/icon.icns",
"icons/icon.ico"
],
"linux": {
"deb": {
"postInstallScript": "../scripts/postinstall.sh"
}
}
}
}