Mercurial > tablet-emu

comparison src/bin/server.rs @ 18:3f7b7a3ad8fe

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Build three binaries instead of using arguments.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Thu, 26 Aug 2021 22:15:55 +0200
parents src/server.rs@0bce7fe96937
children ba09079686a0
comparison
equal deleted inserted replaced
17:0bce7fe96937 18:3f7b7a3ad8fe
1 // Tablet emulator, for people who don’t own one
2 // Copyright © 2020 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
3 //
4 // This program is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU Affero General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
8 //
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU Affero General Public License for more details.
13 //
14 // You should have received a copy of the GNU Affero General Public License
15 // along with this program. If not, see <https://www.gnu.org/licenses/>.
16
17 use input_linux::Key;
18 use std::io::{self, ErrorKind};
19 use std::net::UdpSocket;
20 use tablet_emu::protocol::{Buttons, Event};
21 use tablet_emu::state::State;
22
23 pub fn run_server(address: &str) -> io::Result<()> {
24 let mut state = match State::new() {
25 Ok(state) => state,
26 Err(err) => {
27 match err.kind() {
28 ErrorKind::NotFound => {
29 eprintln!("Couldn’t find /dev/uinput: {}", err);
30 eprintln!("Maybe you forgot to `modprobe uinput`?");
31 }
32 ErrorKind::PermissionDenied => {
33 eprintln!("Couldn’t open /dev/uinput for writing: {}", err);
34 eprintln!("Maybe you aren’t allowed to create input devices?");
35 }
36 _ => eprintln!("Couldn’t open /dev/uinput for writing: {}", err),
37 }
38 std::process::exit(1);
39 }
40 };
41
42 let socket = UdpSocket::bind(address)?;
43 println!("Listening on {:?}", socket);
44 println!("Here is an example client: https://hg.linkmauve.fr/remote-gamepad");
45
46 let mut event: Event = Default::default();
47 let mut last = Some((0., 0.));
48 state.set_size(320, 240);
49 loop {
50 // TODO: Yolo-alignment.
51 let buf: &mut [u8; 16] = unsafe { std::mem::transmute(&mut event) };
52 let (amount, source) = socket.recv_from(buf)?;
53 if amount != std::mem::size_of::<Event>() {
54 eprintln!("Invalid data length: {}", amount);
55 continue;
56 }
57 println!("{:?} from {:?}", event, source);
58 if event.buttons.contains(Buttons::A) {
59 state.select_tool(Key::ButtonToolPen);
60 } else if event.buttons.contains(Buttons::B) {
61 state.select_tool(Key::ButtonToolRubber);
62 } else if event.buttons.contains(Buttons::X) {
63 state.select_tool(Key::ButtonToolBrush);
64 } else if event.buttons.contains(Buttons::Y) {
65 state.select_tool(Key::ButtonToolPencil);
66 } else if event.buttons.contains(Buttons::SELECT) {
67 state.select_tool(Key::ButtonToolAirbrush);
68 } else if event.buttons.contains(Buttons::RESIZE) {
69 println!(
70 "set_size({}, {})",
71 event.touch.0 as i32, event.touch.1 as i32
72 );
73 state.set_size(event.touch.0 as i32, event.touch.1 as i32);
74 }
75 let (x, y) = event.touch;
76 if event.buttons.contains(Buttons::TOUCH) {
77 if let None = last {
78 state.press(x as f64, y as f64)?;
79 last = Some((x as f64, y as f64));
80 continue;
81 }
82 } else {
83 if let Some((x, y)) = last {
84 state.release(x, y)?;
85 last = None;
86 continue;
87 }
88 }
89 state.motion(x as f64, y as f64)?;
90 last = Some((x as f64, y as f64));
91 }
92 }
93
94 pub fn main() {
95 let args: Vec<_> = std::env::args().collect();
96 let address = if args.len() > 1 {
97 args[1].clone()
98 } else {
99 String::from("0.0.0.0:16150")
100 };
101 run_server(&address).unwrap();
102 }