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Read /dev/input for touchscreen (#3)

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This commit is contained in:
Jon Dough
2025-05-04 03:00:34 +00:00
committed by GitHub
parent dfe065d26a
commit 6cc8e06e89
5 changed files with 138 additions and 29 deletions
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54
src/bin/wm.rs
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@@ -1,14 +1,14 @@
use std::process::{ Command, Stdio };
use std::sync::mpsc;
use std::thread;
use std::time::Duration;
use std::io::{ stdin, stdout, BufReader, BufRead, Write };
use std::io::{ stdin, stdout, Write };
use std::process::exit;
use std::env;
use linux::fb::Framebuffer;
use linux::raw::RawStdout;
use linux::keys::{ RawStdin, Key };
use linux::input::{ Input, EventType };
use wm::framebuffer::{ FramebufferWriter, FramebufferInfo };
use wm::window_manager::WindowManager;
@@ -112,35 +112,35 @@ fn init(framebuffer: Framebuffer, framebuffer_info: FramebufferInfo) {
thread::spawn(move || {
//spawn evtest, parse it for touch coords
if touch {
let mut evtest = Command::new("evtest").arg("/dev/input/by-path/first-touchscreen").stdout(Stdio::piped()).spawn().unwrap();
let reader = BufReader::new(evtest.stdout.as_mut().unwrap());
let mut events = Input::new("/dev/input/by-path/first-touchscreen").unwrap(); //panics in threads don't matter in this case
let mut x: Option<usize> = None;
let mut y: Option<usize> = None;
for line in reader.lines() {
let line = line.unwrap();
println!(" "); //without any stdout, on my phone, for some reason the framebuffer doesn't get redrawn to the screen
if line.contains("ABS_X), value ") || line.contains("ABS_Y), value ") {
let value: Vec<_> = line.split("), value ").collect();
let value = value[value.len() - 1].parse::<usize>().unwrap();
if line.contains("ABS_X") {
x = Some(value);
} else {
y = Some(value);
}
if x.is_some() && y.is_some() {
let (x2, y2) = if rotate {
(dimensions[0] - y.unwrap(), x.unwrap())
loop {
let event = events.next();
if let Some(event) = event {
//ABS_X = 0, ABS_Y = 1
if event.type_ == EventType::EV_ABS && (event.code == 0 || event.code == 1) {
if event.code == 0 {
x = Some(event.value as usize); //event.value is u16 so this should be fine. unless usize is u8, lmao
} else {
(x.unwrap(), y.unwrap())
};
//top right, clear
//useful sometimes, I think.
if x2 > dimensions[0] - 100 && y2 < 100 {
tx1.send(ThreadMessage::Clear).unwrap();
y = Some(event.value as usize);
}
if x.is_some() && y.is_some() {
let (x2, y2) = if rotate {
(dimensions[0] - y.unwrap(), x.unwrap())
} else {
(x.unwrap(), y.unwrap())
};
//top right, clear
//useful sometimes, I think.
if x2 > dimensions[0] - 100 && y2 < 100 {
tx1.send(ThreadMessage::Clear).unwrap();
}
println!(" "); //without any stdout, on my phone, for some reason the framebuffer doesn't get redrawn to the screen
tx1.send(ThreadMessage::Touch(x2, y2)).unwrap();
x = None;
y = None;
}
tx1.send(ThreadMessage::Touch(x2, y2)).unwrap();
x = None;
y = None;
}
}
thread::sleep(Duration::from_millis(1));