深海游弋的鱼 – 默默的点滴

GNOME 46 桌面环境加入 RDP 协议支持，今年 3 月起 Linux 发行版用户远程登录更轻松

据外媒 Phoronix 报道，GNOME 桌面环境在最近合并的 PR 中获得了远程桌面协议（RDP）支持，预计相关特性将集成至 2024 年 3 月发布的 GNOME 46 版本中，届时 Linux 发行版用户能够更方便地使用 RDP 软件远程访问桌面环境。

Written by Michael Larabel in GNOME on 6 January 2024 at 01:16 PM EST. 58 Comments

After the merge request was open since August of 2022, merged today is support within the GNOME Remote Desktop code for handling graphical remote log-ins.

The merge request by Joan Torres finishes an important piece of the Remote Desktop Protocol (RDP) support for the GNOME desktop with allowing graphical remote logins. Torres explained in that merge request:
"The standard daemon now is abstracted and two new behaviours are implemented:

- Running as a system service (AKA daemon-system):
Started with --system option. It is started as gnome-remote-desktop user. On a new RDP connection it requests GDM to start a RemoteDisplay with a headless GDM greeter session. When a new RemoteDisplay iface from GDM is exported it will register a handover iface to handover the RDP client to the session on this RemoteDisplay. It handovers RDP clients between sessions using these handover ifaces (See the commit descriptions for more info).

- Running on a headless user session (AKA daemon-handover):
Started with --handover option. This daemon is attached as a service on greeter or user headless sessions. It will tell daemon-system using the handover dbus iface to start the handover, and daemon-system will proceed with the handover process. This daemon gets the RDP socket connection from the daemon-system.

- The standard daemon now is daemon-user."

Written by Michael Larabel in GNOME on 6 January 2024 at 01:16 PM EST. 58 Comments

After the merge request was open since August of 2022, merged today is support within the GNOME Remote Desktop code for handling graphical remote log-ins.

The merge request by Joan Torres finishes an important piece of the Remote Desktop Protocol (RDP) support for the GNOME desktop with allowing graphical remote logins. Torres explained in that merge request:

"The standard daemon now is abstracted and two new behaviours are implemented:

- Running as a system service (AKA daemon-system):

Started with --system option. It is started as gnome-remote-desktop user. On a new RDP connection it requests GDM to start a RemoteDisplay with a headless GDM greeter session. When a new RemoteDisplay iface from GDM is exported it will register a handover iface to handover the RDP client to the session on this RemoteDisplay. It handovers RDP clients between sessions using these handover ifaces (See the commit descriptions for more info).

- Running on a headless user session (AKA daemon-handover):

Started with --handover option. This daemon is attached as a service on greeter or user headless sessions. It will tell daemon-system using the handover dbus iface to start the handover, and daemon-system will proceed with the handover process. This daemon gets the RDP socket connection from the daemon-system.

- The standard daemon now is daemon-user."

这项 RDP 功能同时支持 X.Org 与 Wayland 显示服务器协议，可作为系统服务运行，也可在无 header 用户会话中运行，从而为 GNOME 桌面环境实现 GUI 远程桌面能力。

继续阅读GNOME 46 桌面环境加入 RDP 协议支持，今年 3 月起 Linux 发行版用户远程登录更轻松

Flutter Provider状态管理---八种提供者使用分析

前言

在我们上一篇文章中对Provider进行了介绍以及类结构的说明，最后还写了一个简单的示例，通过上一章节我们对Provider有了一个基本的了解，这一章节我们来说说Provider的8种提供者以及他们的使用区别。

Provider

Provider是最基本的Provider组件，可以使用它为组件树中的任何位置提供值，但是当该值更改的时候，它并不会更新UI，下面我们给出一个示例

第一步：创建模型

class UserModel {

  String name = "Jimi";

  void changeName() {
    name = "hello";
  }
}

class UserModel {

String name = "Jimi";

void changeName() {

name = "hello";

}

第二步：应用程序入口设置

return Provider<UserModel>(
  create: (_) => UserModel(),
  child: MaterialApp(
    debugShowCheckedModeBanner: false,
    home: ProviderExample(),
  ),
);

return Provider<UserModel>(

create: (_) => UserModel(),

child: MaterialApp(

debugShowCheckedModeBanner: false,

home: ProviderExample(),

);

第三步：使用共享数据

关于Consumer后面将消费者在提及，我们这里只需要知道有两个消费者，第一个用于展示模型的数据，第二个用于改变模型的数据。

第一个Comsumer是用于读取模型的数据name
第二个Consumer用于改变模型的数据name

import 'package:flutter/material.dart';
import 'package:flutter_provider_example/provider_example/user_model.dart';
import 'package:provider/provider.dart';

class ProviderExample extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("ProviderExample"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Consumer<UserModel>(
              builder: (_, userModel, child) {
                return Text(userModel.name,
                    style: TextStyle(
                        color: Colors.red,
                        fontSize: 30
                    )
                );
              },
            ),
            Consumer<UserModel>(
              builder: (_, userModel, child) {
                return Padding(
                  padding: EdgeInsets.all(20),
                  child: ElevatedButton(
                    onPressed: (){
                      userModel.changeName();
                    },
                    child: Text("改变值"),
                  ),
                );
              },
            ),
          ],
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';

import 'package:flutter_provider_example/provider_example/user_model.dart';

import 'package:provider/provider.dart';

class ProviderExample extends StatelessWidget {

@override

Widget build(BuildContext context) {

return Scaffold(

appBar: AppBar(

title: Text("ProviderExample"),

body: Center(

child: Column(

mainAxisAlignment: MainAxisAlignment.center,

children: [

Consumer<UserModel>(

builder: (_, userModel, child) {

return Text(userModel.name,

style: TextStyle(

color: Colors.red,

fontSize: 30

)

);

Consumer<UserModel>(

builder: (_, userModel, child) {

return Padding(

padding: EdgeInsets.all(20),

child: ElevatedButton(

onPressed: (){

userModel.changeName();

child: Text("改变值"),

);

}

继续阅读Flutter Provider状态管理---八种提供者使用分析

一	二	三	四	五	六	日
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31