status file to track desktop tiling state

config.go

@@ -18,8 +18,9 @@ type cfg struct {
 	WindowsToIgnore []string `toml:"ignore"`
 	Gap             int
 	Proportion      float64
-	HideDecor       bool  `toml:"remove_decorations"`
-	TileStartup     []int `toml:"tile_workspaces"`
+	TileStartup     []int  `toml:"tile_workspaces"`
+	HideDecor       bool   `toml:"remove_decorations"`
+	StatusFname     string `toml:"status_filename"`
 }
 
 func init() {
@@ -78,6 +79,10 @@ proportion = 0.1
 # list of workspace numbers to activate tiling for at startup
 # tile_workspaces = [0, 1, 3]
 
+# write out tiling status as it changes (optional)
+# use the full path to the file
+# status_filename = "/full/path/to/file"
+
 [keybindings]
 # key sequences can have zero or more modifiers and exactly one key.
 # example: Control-Shift-t has two modifiers and one key.

keybinding.go

@@ -26,15 +26,18 @@ func bindKeys(t *tracker) {
 	workspaces := t.workspaces
 	keybind.Initialize(state.X)
 	k := keyMapper{}
+	generateStatus(t)
 
 	k.bind("tile", func() {
 		ws := workspaces[state.CurrentDesk]
 		ws.IsTiling = true
 		ws.Tile()
+		generateStatus(t)
 	})
 	k.bind("untile", func() {
 		ws := workspaces[state.CurrentDesk]
 		ws.Untile()
+		generateStatus(t)
 	})
 	k.bind("make_active_window_master", func() {
 		c := t.clients[state.ActiveWin]

main.go

@@ -1,7 +1,9 @@
 package main
 
 import (
+	"encoding/json"
 	"flag"
+	"os"
 
 	"github.com/BurntSushi/xgbutil/xevent"
 	"github.com/blrsn/zentile/state"
@@ -32,6 +34,20 @@ func main() {
 	xevent.Main(state.X)
 }
 
+func generateStatus(t *tracker) {
+	fname := Config.StatusFname
+	if fname == "" {
+		return
+	}
+
+	blob, _ := json.MarshalIndent(t.workspaces, "", "    ")
+	os.Create(fname)
+	err := os.WriteFile(fname, blob, 0600)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
 func setLogLevel() {
 	var verbose bool
 	flag.BoolVar(&verbose, "v", false, "verbose mode")