custom runner using Xephyr

.gitignore

@@ -3,3 +3,4 @@
 /Cargo.lock
 /.cargo/
 /wmlog
+/xinitrc.tmp

runner.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# binary supplied by cargo
+bin=$1
+
+# write temporary xinitrc
+printf "exec $bin\n" > xinitrc.tmp
+
+# call xinit
+XEPHYR_BIN=$(which Xephyr)
+
+[ -z "$XEPHYR_BIN" ] || exec xinit ./xinitrc.tmp -- $XEPHYR_BIN :100 -ac -screen 800x600

src/backends/traits.rs

@@ -38,6 +38,8 @@ pub trait WindowServerBackend {
     fn ungrab_cursor(&self);
     fn move_cursor(&self, window: Option<Self::Window>, position: Point<i32>);
 
+    fn all_windows(&self) -> Vec<Self::Window>;
+
     fn resize_window(&self, window: Self::Window, new_size: Point<i32>) {
         self.configure_window(window, Some(new_size), None, None);
     }

src/backends/xlib/mod.rs

@@ -857,6 +857,10 @@ impl WindowServerBackend for XLib {
             );
         }
     }
+
+    fn all_windows(&self) -> Vec<Self::Window> {
+        todo!()
+    }
 }
 
 struct XLibAtoms {

src/clients.rs

@@ -537,7 +537,9 @@ impl ClientState {
     {
         let (new, old) = self.focus_client_inner(key);
 
+        if !(new.is_vacant() && old.is_vacant()) {
             info!("Swapping focus: new({:?}) old({:?})", new, old);
+        }
 
         (new, old)
     }