1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
{-# LANGUAGE CPP #-}
------------------------------------------------------------------------------
-- |
-- Module: Xmobar.X11.Draw
-- Copyright: (c) 2018 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.Monad (when)
import Control.Arrow ((&&&))
import Data.Map hiding (foldr, map, filter)
import Graphics.X11.Xlib hiding (textExtents, textWidth)
import Graphics.X11.Xlib.Extras
import qualified Xmobar.X11.Bitmap as B
import Xmobar.X11.Actions (Action(..))
import Xmobar.X11.Types
import Xmobar.X11.XUtil
import Xmobar.Config
import Xmobar.X11.ColorCache
import Xmobar.X11.Window (drawBorder)
import Xmobar.X11.Parsers (Widget(..))
#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, String, 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 (fs!!i) s >>= \tw -> return (Text s,cl,i,fi tw)
getWidth (Icon s,cl,i,_) = return (Icon s,cl,i,fi $ iconW s)
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)
#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 True
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
printString :: Display -> Drawable -> XFont -> GC -> String -> String
-> 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 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
drawXftRect draw bc' x (y - a) (1 + xglyphinfo_xOff gi) (a + d + 2)
drawXftString' draw fc' fonts (toInteger x) (toInteger y) s
#endif
-- | An easy way to print the stuff we need to print
printStrings :: Drawable -> GC -> [XFont] -> [Int] -> Position
-> Align -> [(Widget, String, Int, Position)] -> X ()
printStrings _ _ _ _ _ _ [] = return ()
printStrings dr gc fontlist voffs offs a 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 = fontlist !! i
offset = case a of
C -> (remWidth + offs) `div` 2
R -> remWidth
L -> offs
(fc,bc) = case break (==',') c of
(f,',':b) -> (f, b )
(f, _) -> (f, bgColor conf)
valign <- verticalOffset ht s (head fontlist) (voffs !! i) conf
case s of
(Text t) -> liftIO $ printString d dr fontst gc fc bc offset valign t alph
(Icon p) -> liftIO $ maybe (return ())
(B.drawBitmap d dr gc fc bc offset valign)
(lookup p (iconS r))
printStrings dr gc fontlist voffs (offs + l) a xs
|
