initial

Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>

5 files changed, 289 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..3e0a48f
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,175 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
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+ "regex-syntax",
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+dependencies = [
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+ "serde_json",
+ "swayipc-types",
+]
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+ "serde_json",
+ "thiserror",
+]
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+version = "0.1.0"
+dependencies = [
+ "regex",
+ "swayipc",
+]
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..4d4be05
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "swhd"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+regex = "1.9.5"
+swayipc = "3.0.1"
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..92fd853
--- /dev/null
+++ b/README.md
@@ -0,0 +1,12 @@
+# sway window hider daemon
+
+automatically hides windows, by looking into /proc.
+
+when a new window is spawned in sway, it looks for the pid,
+and recursivelly looks for parent pids until it finds the
+terminal listed, or init. in the case it finds the terminal,
+it sends any windows attached to that pid to the scratchpad,
+and marks the window hidden with the pid of the new process.
+
+once a window closes, it sees if any scratchpad windows have
+that pid marked, and if so, unhides them.
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..b251bab
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,91 @@
+use swayipc::{Connection, WindowChange, EventType};
+use std::{env,fs::File, io::Read};
+use regex::Regex;
+
+struct WindowHider {
+    term: String
+}
+
+impl WindowHider {
+    fn get_parent_term_pid(&self, pid: i32) -> Option<i32> {
+        let mut file = String::new();
+        File::open(format!("/proc/{pid}/stat")).expect("procfs stat doesn't exist").read_to_string(&mut file).unwrap();
+        let re = Regex::new(r"\d+ \((.*)\) (\w) (\d+) \d+").unwrap().captures(&file).unwrap();
+        let name = re.get(1).unwrap().as_str();
+        let status = re.get(2).unwrap().as_str();
+        let ppid = re.get(3).unwrap().as_str().parse::<i32>().unwrap();
+
+        println!("looking for {pid}. {name}, {status}, {ppid}");
+        match name {
+            _ if name == self.term => {
+                Some(pid)
+            },
+            _ if name == "init" => {
+                None
+            }
+            _ => {
+                self.get_parent_term_pid(ppid)
+            }
+        }
+    }
+
+    fn hide(&self, conn: &mut Connection, pid: i32) -> Result<(), swayipc::Error> {
+        let ppid = self.get_parent_term_pid(pid);
+        if let Some(ppid) = ppid {
+            println!("found parent pid of {pid} as {ppid}");
+            conn.run_command(format!("[pid={ppid}] mark --add {pid}, move scratchpad"))?;
+        }
+        Ok(())
+    }
+
+    fn show(&self, conn: &mut Connection, pid: i32) -> Result<(), swayipc::Error> {
+        conn.run_command(format!("[con_mark={pid}] move workspace current"))?;
+        conn.run_command(format!("[con_mark={pid}] floating toggle"))?;
+        Ok(())
+    }
+}
+
+fn main() -> Result<(), swayipc::Error> {
+    let mut conn = Connection::new().expect("couldn't connect to sway's socket");
+    let evs = Connection::new()?.subscribe([EventType::Window])?; // one can't use the same
+                                                                  // connection for events and for
+                                                                  // running commands. :(
+
+    let mut args: Vec<String> = env::args().collect();
+
+    if args.len() < 2 {
+        println!("usage: swhd <terminal>");
+        return Ok(());
+    }
+
+    let wh = WindowHider {
+        term: args.remove(1)
+    };
+
+    for item in evs {
+        if let Ok(item) = item {
+            match item {
+                swayipc::Event::Window(win) => {
+                    if win.change == WindowChange::New {
+                        if let Some(pid) = win.container.pid {
+                            match wh.hide(&mut conn, pid) {
+                                Ok(_) => {},
+                                Err(_) => println!("failed to hide terminal {pid}")
+                            };
+                        }
+                    } else if win.change == WindowChange::Close {
+                        if let Some(pid) = win.container.pid {
+                            match wh.show(&mut conn, pid) {
+                                Ok(_) => {},
+                                Err(_) => println!("failed to show terminal {pid}")
+                            };
+                        }
+                    }
+                }
+                _ => {}
+            }
+        }
+    }
+
+    Ok(())
+}