better mimick dwm on version, also tested

Cargo.lock

@@ -20,16 +20,6 @@ version = "2.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed570934406eb16438a4e976b1b4500774099c13b8cb96eec99f620f05090ddf"
 
-[[package]]
-name = "ctor"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30d2b3721e861707777e3195b0158f950ae6dc4a27e4d02ff9f67e3eb3de199e"
-dependencies = [
- "quote",
- "syn",
-]
-
 [[package]]
 name = "errno"
 version = "0.3.8"
@@ -62,37 +52,12 @@ version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "01cda141df6706de531b6c46c3a33ecca755538219bd484262fa09410c13539c"
 
-[[package]]
-name = "pin-project-lite"
-version = "0.2.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"
-
-[[package]]
-name = "proc-macro2"
-version = "1.0.78"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
-dependencies = [
- "unicode-ident",
-]
-
-[[package]]
-name = "quote"
-version = "1.0.35"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
-dependencies = [
- "proc-macro2",
-]
-
 [[package]]
 name = "rswm"
 version = "0.1.0"
 dependencies = [
  "anyhow",
  "as-raw-xcb-connection",
- "tiny-xlib",
  "x11rb",
  "x11rb-protocol",
 ]
@@ -110,50 +75,6 @@ dependencies = [
  "windows-sys",
 ]
 
-[[package]]
-name = "syn"
-version = "2.0.48"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
-[[package]]
-name = "tiny-xlib"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d4098d49269baa034a8d1eae9bd63e9fa532148d772121dace3bcd6a6c98eb6d"
-dependencies = [
- "as-raw-xcb-connection",
- "ctor",
- "tracing",
-]
-
-[[package]]
-name = "tracing"
-version = "0.1.40"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
-dependencies = [
- "pin-project-lite",
- "tracing-core",
-]
-
-[[package]]
-name = "tracing-core"
-version = "0.1.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
-
-[[package]]
-name = "unicode-ident"
-version = "1.0.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
-
 [[package]]
 name = "windows-sys"
 version = "0.52.0"

Cargo.toml

@@ -6,7 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-tiny-xlib = "0.2.2"
 as-raw-xcb-connection = "1.0.1"
 x11rb = { version = "0.13.0", features = ["extra-traits", "allow-unsafe-code"] }
 x11rb-protocol = { version = "0.13.0", features = ["std"] }

src/main.rs

@@ -1,41 +1,49 @@
-use anyhow::{anyhow, Context};
+use std::process::exit;
 
-use as_raw_xcb_connection::AsRawXcbConnection;
-use tiny_xlib::Display;
-use x11rb::xcb_ffi::XCBConnection;
+use anyhow::anyhow;
 
-fn xcb_connection_from_display(display: &Display) -> anyhow::Result<XCBConnection> {
-    let xcb_conn = display.as_raw_xcb_connection();
+use x11rb::{
+    connect, connection::Connection, protocol::xproto::ConnectionExt, xcb_ffi::ReplyError,
+};
+use x11rb_protocol::protocol::xproto::{ChangeWindowAttributesAux, EventMask, Screen};
 
-    // Safety: taking a pointer straight from the safe tiny_x11 to the safe x11rb
-    unsafe {
-        XCBConnection::from_raw_xcb_connection(xcb_conn.cast(), false).map_err(|e| anyhow!(e))
+fn become_wm<C: Connection>(conn: &C, screen: &Screen) -> anyhow::Result<()> {
+    let change = ChangeWindowAttributesAux::default()
+        .event_mask(EventMask::SUBSTRUCTURE_REDIRECT | EventMask::SUBSTRUCTURE_NOTIFY);
+
+    let res = conn.change_window_attributes(screen.root, &change)?.check();
+
+    if let Err(ReplyError::X11Error(ref error)) = res {
+        use x11rb_protocol::protocol::ErrorKind;
+
+        if error.error_kind == ErrorKind::Access {
+            eprintln!("rswm: another window manager is already running");
+            exit(1);
+        }
     }
+
+    res.map_err(|e| anyhow!(e))
 }
 
 fn main() -> anyhow::Result<()> {
     let mut args = std::env::args().skip(1);
     if let Some(arg) = args.next() {
         if arg != "-v" {
-            return Err(anyhow!("usage: rwm [-v]"));
+            return Err(anyhow!("usage: rswm [-v]"));
         } else {
-            println!(env!("CARGO_PKG_VERSION")); // TODO: test this
+            println!("rswm-{}", env!("CARGO_PKG_VERSION"));
             return Ok(());
         }
     }
 
     // TODO: Investigate LC_CTYPE and Locale stuff from dwm
 
-    // Here we open a display and get an x11rb connection, we could also just use xcb I think
-    let display = Display::new(None).context("Failed to open display")?;
+    // we can Arc conn if we want to start threading
+    let (conn, screen_num) = connect(None)?;
 
-    let _conn = xcb_connection_from_display(&display)?;
+    let screen = &conn.setup().roots[screen_num];
 
-    // Registering a baby error handler for now
-    tiny_xlib::register_error_handler(Box::new(|_, error| {
-        println!("X11 error: {:?}", error);
-        false
-    }))?;
+    become_wm(&conn, screen)?;
 
     // TODO: Check if there are other wms running