init

diff --git a/.gitignore b/.gitignore
new file mode 100644 (file)
index 0000000..d6e23d9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+powermate
+*.o
+*.hi

diff --git a/powermate.hs b/powermate.hs
new file mode 100755 (executable)
index 0000000..16a783f
--- /dev/null
+++ b/powermate.hs
@@ -0,0 +1,55 @@
+module Main where
+
+import PowerMate
+import System.IO
+import System.Process
+
+data State = State {
+  stPowerMate  :: Handle,
+  stVolume     :: Int
+}
+
+processEvent :: State -> Event -> IO State
+processEvent state (Button True) = do
+  createProcess (proc "music-toggle" [])
+  return state
+processEvent state (Button False) = return state
+
+processEvent state (Rotate dir) = do
+  if dir < 2 then createProcess (proc "volume-up" [])
+  else createProcess (proc "volume-down" [])
+  return state
+
+processEvent state (StatusChange status) = do
+  return state
+
+readState :: State -> IO State
+readState state = do
+  return state
+
+next :: a -> (a -> IO a) -> IO ()
+next state func = do
+  newstate <- func state
+  next newstate func
+  return ()
+
+
+loop :: FilePath -> IO ()
+loop devname = do
+  powermate <- openDevice devname
+
+  state <- readState $ State { stPowerMate=powermate, stVolume=0 }
+
+  next state $ \call -> do
+    event <- readEventWithSkip powermate Nothing
+    case event of
+      Nothing -> return call
+      Just event -> processEvent call event
+
+main :: IO ()
+main = do
+  powermate <- searchForDevice
+  case powermate of
+    Nothing  -> return ()
+    Just work -> do
+      loop work