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{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE MultiWayIf #-}
{-# LANGUAGE OverloadedRecordDot #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE TypeFamilies #-}
module Main where
import Control.Concurrent
import Control.Exception
import Control.Monad
import Control.Monad.Identity
import Data.Bits
import Data.List
import Data.Map qualified as M
import GHC.Ptr (Ptr)
import Graphics.X11 qualified as X
import Graphics.X11.Xft qualified as X
import Graphics.X11.Xlib.Extras qualified as X
import Pretty qualified as P
import Sensor
import Ui hiding (Env)
import Ui qualified
import UnliftIO.STM
data Env = Env
{ dpy :: X.Display,
win :: X.Window,
swidth :: Int,
sheight :: Int,
wwidth :: Int,
wheight :: Int,
wleft :: Int,
wtop :: Int,
gc :: X.GC,
pixm :: X.Pixmap,
fnt :: X.XftFont,
drw :: X.XftDraw,
cmap :: X.Colormap,
vis :: X.Visual
}
type Colors = M.Map (P.Intensity, P.Color) X.XftColor
data State = State
{ dirty :: Bool,
ui :: Ui TVar P.Doc
}
main :: IO ()
main = do
bracket createWindow destroyWindow $ \(env, stateT) ->
withColors env (run env stateT)
data LastRun = LastRun
{ pUi :: Ui Identity P.Doc,
lUi :: Ui'
}
run :: Env -> TVar State -> Colors -> IO ()
run env stateT colors = do
let loop = (loop . Just =<<) . go
loop Nothing
where
go Nothing = do
pUi <- atomically do
state@State {..} <- readTVar stateT
writeTVar stateT state {dirty = False}
pollUi ui
lUi <- paint env colors Nothing pUi
pure (LastRun pUi lUi)
go (Just (LastRun {pUi = pUi', lUi = lUi'})) = do
(pUi, dirty) <- atomically do
state@State {..} <- readTVar stateT
pUi <- pollUi ui
checkSTM (dirty || pUi /= pUi')
writeTVar stateT state {dirty = False}
pure (pUi, dirty)
lUi <- paint env colors (if dirty then Nothing else Just lUi') pUi
pure (LastRun pUi lUi)
processEvents :: Ptr X.XEvent -> Env -> TVar State -> IO ()
processEvents ev env@(Env {..}) stateT = do
timeOut <- X.waitForEvent dpy 1_000_000_000
unless timeOut do
processEvent ev env stateT
processEvents ev env stateT
processEvent :: Ptr X.XEvent -> Env -> TVar State -> IO ()
processEvent ev (Env {..}) stateT = do
X.nextEvent dpy ev
e <- X.getEvent ev
if
| X.ExposeEvent {} <- e -> atomically do
state <- readTVar stateT
writeTVar stateT state {dirty = True}
| otherwise -> pure ()
paint ::
Env ->
Colors ->
Maybe Ui' ->
Ui Identity P.Doc ->
IO Ui'
paint Env {..} colors Nothing ui = do
let env' = Ui.Env {..}
ui' <- layOutUi env' ui
renderUi env' colors ui'
X.copyArea dpy pixm win gc 0 0 (fi wwidth) (fi wheight) 0 0
X.sync dpy False
pure ui'
paint Env {..} colors (Just ui') ui = do
let env' = Ui.Env {..}
ui'' <- layOutUi env' ui
renderUi' env' colors ui' ui''
X.copyArea dpy pixm win gc 0 0 (fi wwidth) (fi wheight) 0 0
X.sync dpy False
pure ui''
destroyWindow :: (Env, TVar State) -> IO ()
destroyWindow (Env {..}, _) = do
X.destroyWindow dpy win
createWindow :: IO (Env, TVar State)
createWindow = do
dpy <- X.openDisplay ""
let scrn = X.defaultScreen dpy
scr = X.defaultScreenOfDisplay dpy
root = X.defaultRootWindow dpy
trueColor = 4
Just vinfo <- X.matchVisualInfo dpy scrn 32 trueColor
let cls = X.inputOutput
dpth = X.visualInfo_depth vinfo
vis = X.visualInfo_visual vinfo
vmsk = X.cWColormap .|. X.cWBorderPixel .|. X.cWBackingPixel .|. X.cWOverrideRedirect
swidth = fi (X.displayWidth dpy scrn)
sheight = fi (X.displayHeight dpy scrn)
wwidth = swidth - 16
wheight = 32
wleft = 8
wtop = 8
cmap <- X.createColormap dpy root vis X.allocNone
win <- X.allocaSetWindowAttributes $ \attr -> do
X.set_colormap attr cmap
X.set_border_pixel attr 0
X.set_background_pixel attr 0
X.set_override_redirect attr True
X.createWindow dpy root (fi wleft) (fi wtop) (fi wwidth) (fi wheight) 0 dpth cls vis vmsk attr
atom <- X.internAtom dpy "ATOM" True
wmState <- X.internAtom dpy "_NET_WM_STATE" False
wmStateSticky <- X.internAtom dpy "_NET_WM_STATE_STICKY" False
wmStateAbove <- X.internAtom dpy "_NET_WM_STATE_ABOVE" False
wmWindowType <- X.internAtom dpy "_NET_WM_WINDOW_TYPE" False
wmWindowTypeDock <- X.internAtom dpy "_NET_WM_WINDOW_TYPE_DOCK" False
wmStrut <- X.internAtom dpy "_NET_WM_STRUT" False
wmStrutPartial <- X.internAtom dpy "_NET_WM_STRUT_PARTIAL" False
X.changeProperty32 dpy win wmState atom X.propModeReplace $
[ fi wmStateAbove,
fi wmStateSticky
]
X.changeProperty32 dpy win wmWindowType atom X.propModeReplace $
[ fi wmWindowTypeDock
]
X.changeProperty32 dpy win wmStrut atom X.propModeReplace $
[0, 0, fi wheight + 8, 0]
X.changeProperty32 dpy win wmStrutPartial atom X.propModeReplace $
[0, 0, fi wheight + 8, 0, 0, 0, 0, 0, fi wleft, fi wwidth, 0, 0]
pixm <- X.createPixmap dpy win (fi wwidth) (fi wheight) dpth
gc <- X.createGC dpy win
drw <- X.xftDrawCreate dpy pixm vis cmap
fnt <- X.xftFontOpen dpy scr "Free Mono:size=15"
X.mapWindow dpy win
let dirty = True
ui <-
runSensorM . initUi . Ui $
intercalate [lit " "] $
[ [sens wmWorkspaces],
[sens wmName, fill],
[lit "cpu ", sens cpu],
[lit "mem ", sens mem],
[lit "disk ", sens disk],
[lit "io ", sens io],
[lit "net ", sens net],
[lit "snd ", sens Sensor.snd],
[lit "bat ", sens bat],
[lit "date ", sens date],
[lit "time ", sens time]
]
let env = Env {..}
stateT <- newTVarIO State {..}
void $ forkIO $ X.allocaXEvent $ \ev -> forever do
processEvents ev env stateT
pure (env, stateT)
withColors :: Env -> (Colors -> IO a) -> IO a
withColors Env {..} act = do
X.withXftColorName dpy vis cmap (P.toRgb (P.Vivid, P.Black)) $ \black -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Vivid, P.Red)) $ \red -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Vivid, P.Green)) $ \green -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Vivid, P.Yellow)) $ \yellow -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Vivid, P.Blue)) $ \blue -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Vivid, P.Magenta)) $ \magenta -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Vivid, P.Cyan)) $ \cyan -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Vivid, P.White)) $ \white -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Dull, P.Black)) $ \dullBlack -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Dull, P.Red)) $ \dullRred -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Dull, P.Green)) $ \dullGreen -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Dull, P.Yellow)) $ \dullYellow -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Dull, P.Blue)) $ \dullBlue -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Dull, P.Magenta)) $ \dullMagenta -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Dull, P.Cyan)) $ \dullCyan -> do
X.withXftColorName dpy vis cmap (P.toRgb (P.Dull, P.White)) $ \dullWhite -> do
let colors =
M.fromList
[ ((P.Vivid, P.Black), black),
((P.Vivid, P.Red), red),
((P.Vivid, P.Green), green),
((P.Vivid, P.Yellow), yellow),
((P.Vivid, P.Blue), blue),
((P.Vivid, P.Magenta), magenta),
((P.Vivid, P.Cyan), cyan),
((P.Vivid, P.White), white),
((P.Dull, P.Black), dullBlack),
((P.Dull, P.Red), dullRred),
((P.Dull, P.Green), dullGreen),
((P.Dull, P.Yellow), dullYellow),
((P.Dull, P.Blue), dullBlue),
((P.Dull, P.Magenta), dullMagenta),
((P.Dull, P.Cyan), dullCyan),
((P.Dull, P.White), dullWhite)
]
act colors
fi :: (Integral a, Num b) => a -> b
fi = fromIntegral
clamp :: (Ord a) => a -> a -> a -> a
clamp mi ma = max mi . min ma
|
