init
This commit is contained in:
parent
13c4dc6703
commit
0d7ba9a3d1
1
.gitignore
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1
.gitignore
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/target
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45
.vscode/launch.json
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45
.vscode/launch.json
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{
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// Use IntelliSense to learn about possible attributes.
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// Hover to view descriptions of existing attributes.
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// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
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"version": "0.2.0",
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"configurations": [
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{
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"type": "lldb",
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"request": "launch",
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"name": "Debug executable 'hello-rust'",
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"cargo": {
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"args": [
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"build",
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"--bin=hello-rust",
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"--package=hello-rust"
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],
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"filter": {
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"name": "hello-rust",
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"kind": "bin"
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}
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},
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"args": [],
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"cwd": "${workspaceFolder}"
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},
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{
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"type": "lldb",
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"request": "launch",
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"name": "Debug unit tests in executable 'hello-rust'",
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"cargo": {
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"args": [
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"test",
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"--no-run",
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"--bin=hello-rust",
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"--package=hello-rust"
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],
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"filter": {
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"name": "hello-rust",
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"kind": "bin"
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}
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},
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"args": [],
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"cwd": "${workspaceFolder}"
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}
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]
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}
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109
Cargo.lock
generated
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109
Cargo.lock
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "autocfg"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
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[[package]]
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name = "device_query"
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version = "0.2.8"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0500656e17fa3bf720de64b28b6fb28c3602307fc7afbb078c6643d836acaa28"
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dependencies = [
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"input-event-codes",
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"pkg-config",
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"readkey",
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"readmouse",
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"winapi",
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"x11",
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]
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[[package]]
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name = "hello-rust"
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version = "0.1.0"
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dependencies = [
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"device_query",
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"substring",
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"text_io",
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]
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[[package]]
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name = "input-event-codes"
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version = "0.2.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3e5ce56b9cb50796f260af5d7ccd957727d5390e575b1917f2722bd9813faabd"
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[[package]]
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name = "libc"
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version = "0.2.161"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
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[[package]]
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name = "pkg-config"
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version = "0.3.31"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "953ec861398dccce10c670dfeaf3ec4911ca479e9c02154b3a215178c5f566f2"
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[[package]]
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name = "readkey"
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version = "0.1.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "86d401b6d6a1725a59f1b4e813275d289dff3ad09c72b373a10a7a8217ba3146"
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[[package]]
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name = "readmouse"
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version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "be105c72a1e6a5a1198acee3d5b506a15676b74a02ecd78060042a447f408d94"
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[[package]]
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name = "substring"
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version = "1.4.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "42ee6433ecef213b2e72f587ef64a2f5943e7cd16fbd82dbe8bc07486c534c86"
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dependencies = [
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"autocfg",
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]
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[[package]]
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name = "text_io"
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version = "0.1.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d5f0c8eb2ad70c12a6a69508f499b3051c924f4b1cfeae85bfad96e6bc5bba46"
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[[package]]
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name = "winapi"
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version = "0.3.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
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dependencies = [
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"winapi-i686-pc-windows-gnu",
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"winapi-x86_64-pc-windows-gnu",
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]
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[[package]]
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name = "winapi-i686-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
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[[package]]
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name = "winapi-x86_64-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
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[[package]]
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name = "x11"
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version = "2.21.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "502da5464ccd04011667b11c435cb992822c2c0dbde1770c988480d312a0db2e"
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dependencies = [
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"libc",
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"pkg-config",
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]
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9
Cargo.toml
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9
Cargo.toml
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[package]
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name = "text_scroller"
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version = "0.1.0"
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edition = "2024"
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[dependencies]
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device_query = "0.2.0"
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substring = "1.4.5"
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text_io = "0.1.12"
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130
src/main.rs
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130
src/main.rs
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use std::thread;
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use std::time::Duration;
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use substring::Substring;
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use device_query::{DeviceQuery, DeviceState, Keycode};
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use std::sync::mpsc;
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#[macro_use] extern crate text_io;
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macro_rules! either {
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($test:expr => $true_expr:expr; $false_expr:expr) => {
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if $test {
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$true_expr
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}
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else {
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$false_expr
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}
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}
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}
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fn main() {
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print!("Use the up/down arrow keys to adjust the update speed!\nleft/right controls the scroll direction!\nPlease enter a string: ");
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let mut input: String = read!("{}\n");
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// check the final character, add a space if there isn't one.
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if input.chars().nth(input.len()) != Some(' ') {
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input.push(' ');
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}
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let mut i: i64 = 0;
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let (tx, rx) = mpsc::sync_channel(0);
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let initial_polling_rate: u64 = 50;
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let initial_scroll_left: bool = true;
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// polling thread
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thread::spawn(move || {
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let mut polling_rate = initial_polling_rate;
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let mut scroll_left = initial_scroll_left;
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let device_state = DeviceState::new();
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loop {
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// Poll for input
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let keys = device_state.get_keys(); // poll the keys
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(polling_rate, scroll_left) = detect_keys(keys, polling_rate, scroll_left);
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let _ = tx.send((polling_rate, scroll_left));
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thread::sleep(Duration::from_millis(100)); // poll every 50 ms
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}
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});
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// main thread
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let mut polling_rate = initial_polling_rate;
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let mut scroll_left = initial_scroll_left;
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loop {
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// Get data from the polling thread
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match rx.try_recv() {
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Ok((new_rate, new_scroll)) => {
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polling_rate = new_rate;
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scroll_left = new_scroll;
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}
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Err(mpsc::TryRecvError::Empty) => {
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//eprintln!("No new data. ;(");
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}
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Err(mpsc::TryRecvError::Disconnected) => {
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eprintln!("Channel has been closed.");
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break;
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}
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}
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thread::sleep(Duration::from_millis(polling_rate));
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println!("i: {}, upd: {}ms, scrll: {}, {}", {i +=1; i}, polling_rate, either!(scroll_left => "L"; "R"), input);
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// Scroll text
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if scroll_left {
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input = shift_left(input);
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} else {
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input = shift_right(input);
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}
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}
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}
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fn shift_left(mut input: String) -> String {
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let tmp: char = input.chars().nth(0).expect("char");
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input = input.substring(1,input.len()).to_string();
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input.push_str(&tmp.to_string());
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return input;
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}
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fn shift_right(mut input: String) -> String {
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let tmp: String = input.substring(0, input.len() - 1).to_string();
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input = input.chars().nth(input.len() - 1).expect("char").to_string();
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input.push_str(&tmp);
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return input;
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}
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fn detect_keys(keys: Vec<Keycode>, mut polling_rate: u64, mut scroll_left: bool) -> (u64, bool) {
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//detecting keydown events
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//println!("{} {} ", polling_rate, scroll_left);
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if keys.is_empty() {
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return (polling_rate, scroll_left);
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}
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if keys.contains(&Keycode::Up) {
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polling_rate = increase_poll(polling_rate);
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}
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if keys.contains(&Keycode::Down) {
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polling_rate = decrease_poll(polling_rate)
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}
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if keys.contains(&Keycode::Left) {
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scroll_left = true;
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}
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if keys.contains(&Keycode::Right) {
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scroll_left = false;
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}
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return (polling_rate, scroll_left);
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}
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fn increase_poll(mut polling_rate: u64) -> u64 {
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if polling_rate < 1000 {
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polling_rate += 5;
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} else {
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eprintln!("polling rate can't go higher!");
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}
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return polling_rate;
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}
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fn decrease_poll(mut polling_rate: u64) -> u64 {
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if polling_rate > 0 {
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polling_rate -= 5;
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} else {
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eprintln!("polling rate can't go lower!");
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}
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return polling_rate;
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}
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