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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
-----------------------------------------------------------------------------
-- |
-- Module : Graphics.X11.Xlib.Display
-- Copyright : (c) Alastair Reid, 1999-2003
-- License : BSD-style (see the file libraries/base/LICENSE)
--
-- Maintainer : libraries@haskell.org
-- Stability : provisional
-- Portability : portable
--
-- A collection of FFI declarations for interfacing with Xlib Displays.
--
-----------------------------------------------------------------------------
module Graphics.X11.Xlib.Display(
allPlanes_aux,
blackPixel,
whitePixel,
connectionNumber,
defaultColormap,
defaultGC,
defaultDepth,
defaultScreen,
defaultScreenOfDisplay,
displayHeight,
displayHeightMM,
displayWidth,
displayWidthMM,
maxRequestSize,
displayMotionBufferSize,
resourceManagerString,
screenResourceString,
displayString,
imageByteOrder,
protocolRevision,
protocolVersion,
serverVendor,
screenCount,
defaultVisual,
displayCells,
displayPlanes,
screenOfDisplay,
defaultRootWindow,
rootWindow,
qLength,
noOp,
openDisplay,
closeDisplay,
) where
import Graphics.X11.Types
import Graphics.X11.Xlib.Types
import Foreign (throwIfNull, Ptr)
import Foreign.C
import System.IO.Unsafe
----------------------------------------------------------------
-- Display
----------------------------------------------------------------
-- | interface to the X11 library function @XAllPlanes()@.
foreign import ccall unsafe "HsXlib.h XAllPlanes"
allPlanes_aux :: Pixel
-- | interface to the X11 library function @XBlackPixel()@.
foreign import ccall unsafe "HsXlib.h XBlackPixel"
blackPixel :: Display -> ScreenNumber -> Pixel
-- | interface to the X11 library function @XWhitePixel()@.
foreign import ccall unsafe "HsXlib.h XWhitePixel"
whitePixel :: Display -> ScreenNumber -> Pixel
-- This may vary from one execution to another but I believe it
-- is constant during any given execution and so it can be made PURE
-- without breaking referential transparency.
--
-- Note: underneath the opaque name, it turns out that this
-- is the file descriptor. You need to know this if you want to
-- use select.
-- | interface to the X11 library function @XConnectionNumber()@.
foreign import ccall unsafe "HsXlib.h XConnectionNumber"
connectionNumber :: Display -> CInt
-- | interface to the X11 library function @XDefaultColormap()@.
foreign import ccall unsafe "HsXlib.h XDefaultColormap"
defaultColormap :: Display -> ScreenNumber -> Colormap
-- XListDepths :: Display -> ScreenNumber -> ListInt using res1 = XListDepths(arg1,arg2,&res1_size)
-- | interface to the X11 library function @XDefaultGC()@.
foreign import ccall unsafe "HsXlib.h XDefaultGC"
defaultGC :: Display -> ScreenNumber -> GC
-- | interface to the X11 library function @XDefaultDepth()@.
foreign import ccall unsafe "HsXlib.h XDefaultDepth"
defaultDepth :: Display -> ScreenNumber -> CInt
-- | interface to the X11 library function @XDefaultScreen()@.
foreign import ccall unsafe "HsXlib.h XDefaultScreen"
defaultScreen :: Display -> ScreenNumber
-- | interface to the X11 library function @XDefaultScreenOfDisplay()@.
foreign import ccall unsafe "HsXlib.h XDefaultScreenOfDisplay"
defaultScreenOfDisplay :: Display -> Screen
-- | interface to the X11 library function @XDisplayHeight()@.
foreign import ccall unsafe "HsXlib.h XDisplayHeight"
displayHeight :: Display -> ScreenNumber -> CInt
-- | interface to the X11 library function @XDisplayHeightMM()@.
foreign import ccall unsafe "HsXlib.h XDisplayHeightMM"
displayHeightMM :: Display -> ScreenNumber -> CInt
-- | interface to the X11 library function @XDisplayWidth()@.
foreign import ccall unsafe "HsXlib.h XDisplayWidth"
displayWidth :: Display -> ScreenNumber -> CInt
-- | interface to the X11 library function @XDisplayWidthMM()@.
foreign import ccall unsafe "HsXlib.h XDisplayWidthMM"
displayWidthMM :: Display -> ScreenNumber -> CInt
-- | interface to the X11 library function @XMaxRequestSize()@.
foreign import ccall unsafe "HsXlib.h XMaxRequestSize"
maxRequestSize :: Display -> CInt
-- | interface to the X11 library function @XDisplayMotionBufferSize()@.
foreign import ccall unsafe "HsXlib.h XDisplayMotionBufferSize"
displayMotionBufferSize :: Display -> CInt
--Disnae exist in X11R5 XExtendedMaxRequestSize :: Display -> Int
-- | interface to the X11 library function @XResourceManagerString()@.
resourceManagerString :: Display -> String
resourceManagerString display = xlibCString (xResourceManagerString display)
foreign import ccall unsafe "HsXlib.h XResourceManagerString"
xResourceManagerString :: Display -> IO CString
-- | interface to the X11 library function @XScreenResourceString()@.
screenResourceString :: Screen -> String
screenResourceString screen = xlibCString (xScreenResourceString screen)
foreign import ccall unsafe "HsXlib.h XScreenResourceString"
xScreenResourceString :: Screen -> IO CString
-- | interface to the X11 library function @XDisplayString()@.
displayString :: Display -> String
displayString display = xlibCString (xDisplayString display)
foreign import ccall unsafe "HsXlib.h XDisplayString"
xDisplayString :: Display -> IO CString
-- | interface to the X11 library function @XImageByteOrder()@.
foreign import ccall unsafe "HsXlib.h XImageByteOrder"
imageByteOrder :: Display -> CInt
-- | interface to the X11 library function @XProtocolRevision()@.
foreign import ccall unsafe "HsXlib.h XProtocolRevision"
protocolRevision :: Display -> CInt
-- | interface to the X11 library function @XProtocolVersion()@.
foreign import ccall unsafe "HsXlib.h XProtocolVersion"
protocolVersion :: Display -> CInt
-- | interface to the X11 library function @XServerVendor()@.
serverVendor :: Display -> String
serverVendor display = xlibCString (xServerVendor display)
foreign import ccall unsafe "HsXlib.h XServerVendor"
xServerVendor :: Display -> IO CString
--Disnae exist: XServerRelease :: Display -> Int
-- | interface to the X11 library function @XScreenCount()@.
foreign import ccall unsafe "HsXlib.h XScreenCount"
screenCount :: Display -> CInt
-- | interface to the X11 library function @XDefaultVisual()@.
foreign import ccall unsafe "HsXlib.h XDefaultVisual"
defaultVisual :: Display -> ScreenNumber -> Visual
-- | interface to the X11 library function @XDisplayCells()@.
foreign import ccall unsafe "HsXlib.h XDisplayCells"
displayCells :: Display -> ScreenNumber -> CInt
-- | interface to the X11 library function @XDisplayPlanes()@.
foreign import ccall unsafe "HsXlib.h XDisplayPlanes"
displayPlanes :: Display -> ScreenNumber -> CInt
-- | interface to the X11 library function @XScreenOfDisplay()@.
foreign import ccall unsafe "HsXlib.h XScreenOfDisplay"
screenOfDisplay :: Display -> ScreenNumber -> Screen
-- | interface to the X11 library function @XDefaultRootWindow()@.
foreign import ccall unsafe "HsXlib.h XDefaultRootWindow"
defaultRootWindow :: Display -> Window
-- The following are believed to be order dependent
-- | interface to the X11 library function @XRootWindow()@.
foreign import ccall unsafe "HsXlib.h XRootWindow"
rootWindow :: Display -> ScreenNumber -> IO Window
-- | interface to the X11 library function @XQLength()@.
foreign import ccall unsafe "HsXlib.h XQLength"
qLength :: Display -> IO CInt
-- | interface to the X11 library function @XNoOp()@.
foreign import ccall unsafe "HsXlib.h XNoOp"
noOp :: Display -> IO ()
-- | interface to the X11 library function @XOpenDisplay()@.
openDisplay :: String -> IO Display
openDisplay name =
withCString name $ \ c_name -> do
display <- throwIfNull "openDisplay" (xOpenDisplay c_name)
return (Display display)
foreign import ccall unsafe "HsXlib.h XOpenDisplay"
xOpenDisplay :: CString -> IO (Ptr Display)
-- | interface to the X11 library function @XCloseDisplay()@.
foreign import ccall unsafe "HsXlib.h XCloseDisplay"
closeDisplay :: Display -> IO ()
-- | convert a CString owned by Xlib to a Haskell String
xlibCString :: IO CString -> String
xlibCString act = unsafePerformIO $ do
cs <- act
peekCString cs
----------------------------------------------------------------
-- End
----------------------------------------------------------------
|
