[main] Redraw on click

Whenever a module in the bar is clicked, immediately redraw the line, to
make for a snappier user experience (especially when muting/unmuting).

bumblebee/output.py

@@ -1,9 +1,15 @@
 
 class Output(object):
-    def __init__(self, theme):
+    def __init__(self, refresh, theme):
         self._theme = theme
+        self._refresh = refresh
         self._callbacks = {}
 
+    def redraw(self):
+        self._refresh.acquire()
+        self._refresh.notify()
+        self._refresh.release()
+
     def add_callback(self, cmd, button, module=None):
         if module:
             module = module.replace("bumblebee.modules.", "")

bumblebee/outputs/i3.py

@@ -25,10 +25,11 @@ def read_input(output):
                 button = event.get("button", -1)
             )
             subprocess.Popen(shlex.split(cb), stdout=DEVNULL, stderr=DEVNULL)
+        output.redraw()
 
 class i3bar(bumblebee.output.Output):
-    def __init__(self, theme):
-        super(i3bar, self).__init__(theme)
+    def __init__(self, refresh, theme):
+        super(i3bar, self).__init__(refresh, theme)
         self._data = []
 
         self.add_callback("i3-msg workspace prev_on_output", 4)

i3bumblebee

@@ -7,6 +7,7 @@ import glob
 import pkgutil
 import argparse
 import textwrap
+import threading
 import importlib
 import bumblebee.theme
 import bumblebee.modules
@@ -83,8 +84,9 @@ def main():
         print_theme_list()
         sys.exit(0)
 
+    refresh = threading.Condition()
     theme = bumblebee.theme.Theme(args.theme) if args.theme else bumblebee.theme.Theme()
-    output = bumblebee.outputs.i3.i3bar(theme)
+    output = bumblebee.outputs.i3.i3bar(refresh, theme)
 
     modules = []
     for m in args.modules:
@@ -96,6 +98,7 @@ def main():
     print output.start()
     sys.stdout.flush()
 
+    refresh.acquire()
     while True:
         theme.reset()
         for m in modules:
@@ -103,7 +106,7 @@ def main():
             theme.next()
         print output.get()
         sys.stdout.flush()
-        time.sleep(args.interval)
+        refresh.wait(args.interval)
 
     print output.stop()