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
|
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Util.XUtils
-- Copyright : (c) 2007 Andrea Rossato
-- License : BSD-style (see xmonad/LICENSE)
--
-- Maintainer : andrea.rossato@unibz.it
-- Stability : unstable
-- Portability : unportable
--
-- A module for painting on the screen
--
-----------------------------------------------------------------------------
module XMonad.Util.XUtils (
-- * Usage:
-- $usage
averagePixels
, createNewWindow
, showWindow
, hideWindow
, deleteWindow
, paintWindow
, paintAndWrite
, stringToPixel
) where
import Graphics.X11.Xlib
import Graphics.X11.Xlib.Extras
import Control.Monad.Reader
import Data.Maybe
import XMonad
import XMonad.Util.Font
-- $usage
-- See "XMonad.Layout.Tabbed" or "XMonad.Layout.DragPane" for usage
-- examples
-- | Compute the weighted average the colors of two given Pixel values.
averagePixels :: Pixel -> Pixel -> Double -> X Pixel
averagePixels p1 p2 f =
do d <- asks display
let cm = defaultColormap d (defaultScreen d)
[Color _ r1 g1 b1 _,Color _ r2 g2 b2 _] <- io $ queryColors d cm [Color p1 0 0 0 0,Color p2 0 0 0 0]
let mn x1 x2 = round (fromIntegral x1 * f + fromIntegral x2 * (1-f))
Color p _ _ _ _ <- io $ allocColor d cm (Color 0 (mn r1 r2) (mn g1 g2) (mn b1 b2) 0)
return p
-- | Create a simple window given a rectangle. If Nothing is given
-- only the exposureMask will be set, otherwise the Just value.
-- Use 'showWindow' to map and hideWindow to unmap.
createNewWindow :: Rectangle -> Maybe EventMask -> String -> X Window
createNewWindow (Rectangle x y w h) m col = do
d <- asks display
rw <- asks theRoot
c <- stringToPixel d col
win <- io $ createSimpleWindow d rw x y w h 0 c c
case m of
Just em -> io $ selectInput d win em
Nothing -> io $ selectInput d win exposureMask
return win
-- | Map a window
showWindow :: Window -> X ()
showWindow w = do
d <- asks display
io $ mapWindow d w
-- | unmap a window
hideWindow :: Window -> X ()
hideWindow w = do
d <- asks display
io $ unmapWindow d w
-- | destroy a window
deleteWindow :: Window -> X ()
deleteWindow w = do
d <- asks display
io $ destroyWindow d w
-- | Fill a window with a rectangle and a border
paintWindow :: Window -- ^ The window where to draw
-> Dimension -- ^ Window width
-> Dimension -- ^ Window height
-> Dimension -- ^ Border width
-> String -- ^ Window background color
-> String -- ^ Border color
-> X ()
paintWindow w wh ht bw c bc =
paintWindow' w (Rectangle 0 0 wh ht) bw c bc Nothing
-- | Fill a window with a rectangle and a border, and write a string at given position
paintAndWrite :: Window -- ^ The window where to draw
-> XMonadFont -- ^ XMonad Font for drawing
-> Dimension -- ^ Window width
-> Dimension -- ^ Window height
-> Dimension -- ^ Border width
-> String -- ^ Window background color
-> String -- ^ Border color
-> String -- ^ String color
-> String -- ^ String background color
-> Align -- ^ String 'Align'ment
-> String -- ^ String to be printed
-> X ()
paintAndWrite w fs wh ht bw bc borc ffc fbc al str = do
(x,y) <- stringPosition fs (Rectangle 0 0 wh ht) al str
paintWindow' w (Rectangle x y wh ht) bw bc borc ms
where ms = Just (fs,ffc,fbc,str)
-- This stuff is not exported
paintWindow' :: Window -> Rectangle -> Dimension -> String -> String -> Maybe (XMonadFont,String,String,String) -> X ()
paintWindow' win (Rectangle x y wh ht) bw color b_color str = do
d <- asks display
p <- io $ createPixmap d win wh ht (defaultDepthOfScreen $ defaultScreenOfDisplay d)
gc <- io $ createGC d p
-- draw
io $ setGraphicsExposures d gc False
[color',b_color'] <- mapM (stringToPixel d) [color,b_color]
-- we start with the border
io $ setForeground d gc b_color'
io $ fillRectangle d p gc 0 0 wh ht
-- and now again
io $ setForeground d gc color'
io $ fillRectangle d p gc (fi bw) (fi bw) ((wh - (bw * 2))) (ht - (bw * 2))
when (isJust str) $ do
let (xmf,fc,bc,s) = fromJust str
printStringXMF d p xmf gc fc bc x y s
-- copy the pixmap over the window
io $ copyArea d p win gc 0 0 wh ht 0 0
-- free the pixmap and GC
io $ freePixmap d p
io $ freeGC d gc
-- | Short-hand for 'fromIntegral'
fi :: (Integral a, Num b) => a -> b
fi = fromIntegral
|
