From 8507fad62ca2f06e40f4e849bb8edaa6456c87ef Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Fri, 24 Jan 2025 13:03:27 +0100
Subject: ...

---
 accounts/gkleen@sif/niri/mako.nix | 56 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

(limited to 'accounts/gkleen@sif/niri/mako.nix')

diff --git a/accounts/gkleen@sif/niri/mako.nix b/accounts/gkleen@sif/niri/mako.nix
index 901ed022..e06d3b3a 100644
--- a/accounts/gkleen@sif/niri/mako.nix
+++ b/accounts/gkleen@sif/niri/mako.nix
@@ -47,5 +47,61 @@
         Restart = "always";
       };
     };
+
+    systemd.user.services.mako-follows-focus = {
+      Unit = {
+        BindsTo = [ "niri.service" "mako.service" ];
+        After = [ "niri.service" "mako.service" ];
+      };
+      Service = {
+        Type = "simple";
+        Restart = "always";
+        ExecStart = pkgs.writers.writePython3 "mako-follows-focus" {
+          libraries = with pkgs.python3Packages; [];
+        } ''
+          import os
+          import socket
+          import json
+          import subprocess
+
+
+          current_output = None
+          workspaces = []
+
+
+          def output_changed(new_output):
+              global current_output
+
+              if current_output == new_output:
+                  return
+
+              current_output = new_output
+              subprocess.run(["makoctl", "reload"])
+
+
+          sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+          sock.connect(os.environ["NIRI_SOCKET"])
+          sock.send(b"\"EventStream\"\n")
+          for line in sock.makefile(buffering=1, encoding='utf-8'):
+              if line_json := json.loads(line):
+                  if "WorkspacesChanged" in line_json:
+                      workspaces = line_json["WorkspacesChanged"]["workspaces"]
+                      for workspace in workspaces:
+                          if not workspace["is_focused"]:
+                              continue
+                          output_changed(workspace["output"])
+                          break
+                  if "WorkspaceActivated" in line_json and line_json["WorkspaceActivated"]["focused"]:  # noqa: E501
+                      for workspace in workspaces:
+                          if not workspace["id"] == line_json["WorkspaceActivated"]["id"]:  # noqa: E501
+                              continue
+                          output_changed(workspace["output"])
+                          break
+        '';
+      };
+      Install = {
+        WantedBy = [ "mako.service" ];
+      };
+    };
   };
 }
-- 
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