i3-companion: add an icon with the layout of the focused container

bin/i3-companion

@@ -80,6 +80,10 @@ icons = {
     "headset": icon(2, ""),
     "keyboard": icon(2, "⌨"),
     "laptop": icon(2, "💻"),
+    "layout-splith": icon(2, ""),
+    "layout-splitv": icon(2, ""),
+    "layout-stacking": icon(2, ""),
+    "layout-tabbed": icon(2, ""),
     "loudspeaker": icon(2, ""),
     "microphone": icon(2, ""),
     "mouse": icon(2, ""),
@@ -235,7 +239,7 @@ def debounce(sleep, *, unless=None):
     return decorator
 
 
-def polybar(module):
+def polybar(module, silent=False):
     """Use returned string to update polybar module"""
 
     def decorator(fn):
@@ -259,7 +263,8 @@ def polybar(module):
                     if e.errno != errno.ENXIO:
                         raise
 
-            logger.info(f"polybar/{module}: content updated")
+            log = logger.debug if silent else logger.info
+            log("polybar/%s: content updated", module)
             cache[module] = content
             return content
 
@@ -587,6 +592,18 @@ async def workspace_info(i3, event):
     workspace_info.last_id = result[0]
 
 
+@on(I3Event.WINDOW_FOCUS, CommandEvent("layout-changed"), StartEvent)
+@polybar("i3layout", silent=True)
+async def layout_update(i3, event):
+    """Display layout of the current focused container."""
+    tree = await i3.get_tree()
+    focused = tree.find_focused()
+    if not focused:
+        return ""
+    layout = focused.parent.layout
+    return icons.get(f"layout-{layout}", icons['unknown'])
+
+
 @on(I3Event.OUTPUT, StartEvent)
 @static(last_setup=None)
 @debounce(2)
@@ -930,12 +947,13 @@ async def main(options):
         # this mechanism as an IPC mechanism. The alternative would be
         # to use ticks but we would need to spawn an i3-msg process
         # for that.
-        cmd = event.binding.command
+        for cmd in event.binding.command.split(";"):
+            cmd = cmd.strip()
             if not cmd.startswith("nop "):
-            return
+                continue
             cmd = cmd[4:].strip(" \"'")
             if not cmd:
-            return
+                continue
             kind = cmd.split(":")[0]
             for fn, events in on.functions.items():
                 for e in events:

config

@@ -73,8 +73,8 @@ bindsym $mod+f fullscreen toggle
 bindsym $mod+Shift+f fullscreen toggle global
 
 # change container layout (tabbed, toggle split)
-bindsym $mod+w layout toggle splitv splith tabbed
+bindsym $mod+w layout toggle splitv splith tabbed; nop "layout-changed"
-bindsym $mod+v split toggle
+bindsym $mod+v split toggle; nop "layout-changed"
 
 # toggle tiling / floating
 bindsym $mod+Shift+space floating toggle

dotfiles/polybar.conf

@@ -4,6 +4,7 @@ background = #c0000000
 foreground = #eaeaea
 highlight = #4c7899
 warning = #ff3121
+focused = #cc5c00
 transparent = #00000000
 
 [settings]
@@ -29,7 +30,7 @@ font-0 = Iosevka Aile:style=Regular:size=10;2
 font-1 = Font Awesome 6 Pro:style=Solid:size=10;2
 font-2 = Font Awesome 6 Brands:style=Regular:size=10;2
 
-modules-left = i3
+modules-left = i3 i3layout
 modules-center = date
 
 [bar/alone]
@@ -55,7 +56,7 @@ pin-workspaces = true
 label-mode-background = ${colors.highlight}
 label-mode-padding = 1
 label-focused = %name%
-label-focused-background = #cc5c00
+label-focused-background = ${colors.focused}
 label-focused-padding = 1
 label-unfocused = %name%
 label-unfocused-padding = 1
@@ -66,6 +67,12 @@ label-urgent = %name%
 label-urgent-background = #a00000
 label-urgent-padding = 1
 
+[module/i3layout]
+type = custom/ipc
+hook-0 = cat $XDG_RUNTIME_DIR/i3/i3layout.txt 2> /dev/null
+format-foreground = ${colors.focused}
+initial = 1
+
 # This needs 3.6+
 [module/disk]
 type = internal/fs