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{-# LANGUAGE CPP #-}
{-# LANGUAGE TupleSections #-}
------------------------------------------------------------------------------
-- |
-- Module: Xmobar.X11.Draw
-- Copyright: (c) 2018, 2020, 2022 Jose Antonio Ortega Ruiz
-- License: BSD3-style (see LICENSE)
--
-- Maintainer: jao@gnu.org
-- Stability: unstable
-- Portability: portable
-- Created: Sat Nov 24, 2018 18:49
--
--
-- Drawing the xmobar contents
--
------------------------------------------------------------------------------
module Xmobar.X11.Draw (drawInWin) where
import Prelude hiding (lookup)
import Control.Monad.IO.Class
import Control.Monad.Reader
import Control.Arrow ((&&&))
import Data.Map hiding ((\\), foldr, map, filter)
import Data.List ((\\))
import qualified Data.List.NonEmpty as NE
import Graphics.X11.Xlib hiding (textExtents, textWidth)
import Graphics.X11.Xlib.Extras
import Xmobar.Config.Types
import Xmobar.Run.Actions (Action(..))
import qualified Xmobar.X11.Bitmap as B
import Xmobar.X11.Types
import Xmobar.X11.Text
import Xmobar.X11.ColorCache
import Xmobar.X11.Window (drawBorder)
import Xmobar.X11.Parsers hiding (parseString)
import Xmobar.System.Utils (safeIndex)
#ifdef XFT
import Xmobar.X11.MinXft
import Graphics.X11.Xrender
#endif
fi :: (Integral a, Num b) => a -> b
fi = fromIntegral
-- | Draws in and updates the window
drawInWin :: Rectangle -> [[(Widget, TextRenderInfo, Int, Maybe [Action])]] -> X ()
drawInWin wr@(Rectangle _ _ wid ht) ~[left,center,right] = do
r <- ask
let (c,d) = (config &&& display) r
(w,(fs,vs)) = (window &&& fontListS &&& verticalOffsets) r
strLn = liftIO . mapM getWidth
iconW i = maybe 0 B.width (lookup i $ iconS r)
getWidth (Text s,cl,i,_) =
textWidth d (safeIndex fs i) s >>= \tw -> return (Text s,cl,i,fi tw)
getWidth (Icon s,cl,i,_) = return (Icon s,cl,i,fi $ iconW s)
getWidth (Hspace p,cl,i,_) = return (Hspace p,cl,i,fi p)
p <- liftIO $ createPixmap d w wid ht
(defaultDepthOfScreen (defaultScreenOfDisplay d))
#if XFT
when (alpha c /= 255) (liftIO $ drawBackground d p (bgColor c) (alpha c) wr)
#else
_ <- return wr
#endif
withColors d [bgColor c, borderColor c] $ \[bgcolor, bdcolor] -> do
gc <- liftIO $ createGC d w
#if XFT
when (alpha c == 255) $ do
#else
do
#endif
liftIO $ setForeground d gc bgcolor
liftIO $ fillRectangle d p gc 0 0 wid ht
-- write to the pixmap the new string
printStrings p gc fs vs 1 L [] =<< strLn left
printStrings p gc fs vs 1 R [] =<< strLn right
printStrings p gc fs vs 1 C [] =<< strLn center
-- draw border if requested
liftIO $ drawBorder (border c) (borderWidth c) d p gc bdcolor wid ht
-- copy the pixmap with the new string to the window
liftIO $ copyArea d p w gc 0 0 wid ht 0 0
-- free up everything (we do not want to leak memory!)
liftIO $ freeGC d gc
liftIO $ freePixmap d p
-- resync
liftIO $ sync d False
verticalOffset :: (Integral b, Integral a, MonadIO m) =>
a -> Widget -> XFont -> Int -> Config -> m b
verticalOffset ht (Text t) fontst voffs _
| voffs > -1 = return $ fi voffs
| otherwise = do
(as,ds) <- liftIO $ textExtents fontst t
let margin = (fi ht - fi ds - fi as) `div` 2
return $ fi as + margin - 1
verticalOffset ht (Icon _) _ _ conf
| iconOffset conf > -1 = return $ fi (iconOffset conf)
| otherwise = return $ fi (ht `div` 2) - 1
verticalOffset _ (Hspace _) _ voffs _ = return $ fi voffs
printString :: Display -> Drawable -> XFont -> GC -> String -> String
-> Position -> Position -> Position -> Position -> String -> Int -> IO ()
printString d p (Core fs) gc fc bc x y _ _ s a = do
setFont d gc $ fontFromFontStruct fs
withColors d [fc, bc] $ \[fc', bc'] -> do
setForeground d gc fc'
when (a == 255) (setBackground d gc bc')
drawImageString d p gc x y s
printString d p (Utf8 fs) gc fc bc x y _ _ s a =
withColors d [fc, bc] $ \[fc', bc'] -> do
setForeground d gc fc'
when (a == 255) (setBackground d gc bc')
liftIO $ wcDrawImageString d p fs gc x y s
#ifdef XFT
printString dpy drw fs@(Xft fonts) _ fc bc x y ay ht s al =
withDrawingColors dpy drw fc bc $ \draw fc' bc' -> do
when (al == 255) $ do
(a,d) <- textExtents fs s
gi <- xftTxtExtents' dpy fonts s
if ay < 0
then drawXftRect draw bc' x (y - a) (1 + xglyphinfo_xOff gi) (a + d + 2)
else drawXftRect draw bc' x ay (1 + xglyphinfo_xOff gi) ht
drawXftString' draw fc' fonts (toInteger x) (toInteger y) s
#endif
-- | An easy way to print the stuff we need to print
printStrings :: Drawable -> GC -> NE.NonEmpty XFont -> NE.NonEmpty Int -> Position
-> Align -> [((Position, Position), Box)] -> [(Widget, TextRenderInfo, Int, Position)] -> X ()
printStrings _ _ _ _ _ _ _ [] = return ()
printStrings dr gc fontlist voffs offs a boxes sl@((s,c,i,l):xs) = do
r <- ask
let (conf,d) = (config &&& display) r
alph = alpha conf
Rectangle _ _ wid ht = rect r
totSLen = foldr (\(_,_,_,len) -> (+) len) 0 sl
remWidth = fi wid - fi totSLen
fontst = safeIndex fontlist i
voff = safeIndex voffs i
offset = case a of
C -> (remWidth + offs) `div` 2
R -> remWidth
L -> offs
(fc,bc) = colorComponents conf (tColorsString c)
valign <- verticalOffset ht s fontst voff conf
let (ht',ay) = case (tBgTopOffset c, tBgBottomOffset c) of
(-1,_) -> (0, -1)
(_,-1) -> (0, -1)
(ot,ob) -> (fromIntegral ht - ot - ob, ob)
case s of
(Text t) -> liftIO $ printString d dr fontst gc fc bc offset valign ay ht' t alph
(Icon p) -> liftIO $ maybe (return ())
(B.drawBitmap d dr gc fc bc offset valign)
(lookup p (iconS r))
(Hspace _) -> liftIO $ return ()
let triBoxes = tBoxes c
dropBoxes = filter (\(_,b) -> b `notElem` triBoxes) boxes
boxes' = map (\((x1,_),b) -> ((x1, offset + l), b)) (filter (\(_,b) -> b `elem` triBoxes) boxes)
++ map ((offset, offset + l),) (triBoxes \\ map snd boxes)
if Prelude.null xs
then liftIO $ drawBoxes d dr gc (fromIntegral ht) (dropBoxes ++ boxes')
else liftIO $ drawBoxes d dr gc (fromIntegral ht) dropBoxes
printStrings dr gc fontlist voffs (offs + l) a boxes' xs
drawBoxes :: Display -> Drawable -> GC -> Position -> [((Position, Position), Box)] -> IO ()
drawBoxes _ _ _ _ [] = return ()
drawBoxes d dr gc ht (b:bs) = do
let (xx, Box bb offset lineWidth fc mgs) = b
lw = fromIntegral lineWidth :: Position
withColors d [fc] $ \[fc'] -> do
setForeground d gc fc'
setLineAttributes d gc lineWidth lineSolid capNotLast joinMiter
case bb of
BBVBoth -> do
drawBoxBorder d dr gc BBTop offset ht xx lw mgs
drawBoxBorder d dr gc BBBottom offset ht xx lw mgs
BBHBoth -> do
drawBoxBorder d dr gc BBLeft offset ht xx lw mgs
drawBoxBorder d dr gc BBRight offset ht xx lw mgs
BBFull -> do
drawBoxBorder d dr gc BBTop offset ht xx lw mgs
drawBoxBorder d dr gc BBBottom offset ht xx lw mgs
drawBoxBorder d dr gc BBLeft offset ht xx lw mgs
drawBoxBorder d dr gc BBRight offset ht xx lw mgs
_ -> drawBoxBorder d dr gc bb offset ht xx lw mgs
drawBoxes d dr gc ht bs
drawBoxBorder :: Display -> Drawable -> GC -> BoxBorder -> BoxOffset -> Position
-> (Position, Position) -> Position -> BoxMargins -> IO ()
drawBoxBorder d dr gc pos (BoxOffset alg offset) ht (x1,x2) lw (BoxMargins mt mr mb ml) = do
let (p1,p2) = case alg of
L -> (0, -offset)
C -> (offset, -offset)
R -> (offset, 0 )
lc = lw `div` 2
case pos of
BBTop -> drawLine d dr gc (x1 + p1) (mt + lc) (x2 + p2) (mt + lc)
BBBottom -> do
let lc' = max lc 1 + mb
drawLine d dr gc (x1 + p1) (ht - lc') (x2 + p2) (ht - lc')
BBLeft -> drawLine d dr gc (x1 - 1 + ml) p1 (x1 - 1 + ml) (ht + p2)
BBRight -> drawLine d dr gc (x2 + lc - 1 - mr) p1 (x2 + lc - 1 - mr) (ht + p2)
_ -> error "unreachable code"
|
