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|
module Thunk.XlibExtras where
import Graphics.X11.Xlib
import Graphics.X11.Xlib.Types
import Foreign
import Foreign.C.Types
import Control.Monad (ap)
#include "XlibExtras.h"
data Event
= AnyEvent
{ event_type :: EventType
, serial :: CULong
, send_event :: Bool
, event_display :: Display
, window :: Window
}
| ConfigureRequestEvent
{ event_type :: EventType
, serial :: CULong
, send_event :: Bool
, event_display :: Display
, parent :: Window
, window :: Window
, x :: Int
, y :: Int
, width :: Int
, height :: Int
, border_width :: Int
, above :: Window
, detail :: Int
, value_mask :: CULong
}
| MapRequestEvent
{ event_type :: EventType
, serial :: CULong
, send_event :: Bool
, event_display :: Display
, parent :: Window
, window :: Window
}
| KeyEvent
{ event_type :: EventType
, serial :: CULong
, send_event :: Bool
, event_display :: Display
, window :: Window
, root :: Window
, subwindow :: Window
, time :: Time
, x :: Int
, y :: Int
, x_root :: Int
, y_root :: Int
, state :: KeyMask
, keycode :: KeyCode
, same_screen :: Bool
}
| DestroyWindowEvent
{ event_type :: EventType
, serial :: CULong
, send_event :: Bool
, event_display :: Display
, event :: Window
, window :: Window
}
| UnmapEvent
{ event_type :: EventType
, serial :: CULong
, send_event :: Bool
, event_display :: Display
, event :: Window
, window :: Window
, fromConfigure :: Bool
}
deriving Show
getEvent :: XEventPtr -> IO Event
getEvent p = do
-- All events share this layout and naming convention, there is also a
-- common Window field, but the names for this field vary.
type_ <- #{peek XAnyEvent, type} p
serial_ <- #{peek XAnyEvent, serial} p
send_event_ <- #{peek XAnyEvent, send_event} p
display_ <- fmap Display (#{peek XAnyEvent, display} p)
case () of
-------------------------
-- ConfigureRequestEvent:
-------------------------
_ | type_ == configureRequest -> do
parent_ <- #{peek XConfigureRequestEvent, parent } p
window_ <- #{peek XConfigureRequestEvent, window } p
x_ <- #{peek XConfigureRequestEvent, x } p
y_ <- #{peek XConfigureRequestEvent, y } p
width_ <- #{peek XConfigureRequestEvent, width } p
height_ <- #{peek XConfigureRequestEvent, height } p
border_width_ <- #{peek XConfigureRequestEvent, border_width} p
above_ <- #{peek XConfigureRequestEvent, above } p
detail_ <- #{peek XConfigureRequestEvent, detail } p
value_mask_ <- #{peek XConfigureRequestEvent, value_mask } p
return $ ConfigureRequestEvent
{ event_type = type_
, serial = serial_
, send_event = send_event_
, event_display = display_
, parent = parent_
, window = window_
, x = x_
, y = y_
, width = width_
, height = height_
, border_width = border_width_
, above = above_
, detail = detail_
, value_mask = value_mask_
}
-------------------
-- MapRequestEvent:
-------------------
| type_ == mapRequest -> do
parent_ <- #{peek XMapRequestEvent, parent} p
window_ <- #{peek XMapRequestEvent, window} p
return $ MapRequestEvent
{ event_type = type_
, serial = serial_
, send_event = send_event_
, event_display = display_
, parent = parent_
, window = window_
}
------------
-- KeyEvent:
------------
| type_ == keyPress || type_ == keyRelease -> do
window_ <- #{peek XKeyEvent, window } p
root_ <- #{peek XKeyEvent, root } p
subwindow_ <- #{peek XKeyEvent, subwindow } p
time_ <- #{peek XKeyEvent, time } p
x_ <- #{peek XKeyEvent, x } p
y_ <- #{peek XKeyEvent, y } p
x_root_ <- #{peek XKeyEvent, x_root } p
y_root_ <- #{peek XKeyEvent, y_root } p
state_ <- #{peek XKeyEvent, state } p
keycode_ <- #{peek XKeyEvent, keycode } p
same_screen_ <- #{peek XKeyEvent, same_screen} p
return $ KeyEvent
{ event_type = type_
, serial = serial_
, send_event = send_event_
, event_display = display_
, window = window_
, root = root_
, subwindow = subwindow_
, time = time_
, x = x_
, y = y_
, x_root = x_root_
, y_root = y_root_
, state = state_
, keycode = keycode_
, same_screen = same_screen_
}
----------------------
-- DestroyWindowEvent:
----------------------
| type_ == destroyNotify -> do
event_ <- #{peek XDestroyWindowEvent, event } p
window_ <- #{peek XDestroyWindowEvent, window} p
return $ DestroyWindowEvent
{ event_type = type_
, serial = serial_
, send_event = send_event_
, event_display = display_
, event = event_
, window = window_
}
--------------------
-- UnmapNotifyEvent:
--------------------
| type_ == unmapNotify -> do
event_ <- #{peek XUnmapEvent, event } p
window_ <- #{peek XUnmapEvent, window } p
fromConfigure_ <- #{peek XUnmapEvent, from_configure} p
return $ UnmapEvent
{ event_type = type_
, serial = serial_
, send_event = send_event_
, event_display = display_
, event = event_
, window = window_
, fromConfigure = fromConfigure_
}
-- We don't handle this event specifically, so return the generic
-- AnyEvent.
| otherwise -> do
window_ <- #{peek XAnyEvent, window} p
return $ AnyEvent
{ event_type = type_
, serial = serial_
, send_event = send_event_
, event_display = display_
, window = window_
}
data WindowChanges = WindowChanges
{ wcX :: Int
, wcY :: Int
, wcWidth :: Int
, wcHeight:: Int
, wcBorderWidth :: Int
, wcSibling :: Window
, wcStackMode :: Int
}
instance Storable WindowChanges where
sizeOf _ = #{size XWindowChanges}
-- I really hope this is right:
alignment _ = alignment (undefined :: Int)
poke p wc = do
#{poke XWindowChanges, x } p $ wcX wc
#{poke XWindowChanges, y } p $ wcY wc
#{poke XWindowChanges, width } p $ wcWidth wc
#{poke XWindowChanges, height } p $ wcHeight wc
#{poke XWindowChanges, border_width} p $ wcBorderWidth wc
#{poke XWindowChanges, sibling } p $ wcSibling wc
#{poke XWindowChanges, stack_mode } p $ wcStackMode wc
peek p = return WindowChanges
`ap` (#{peek XWindowChanges, x} p)
`ap` (#{peek XWindowChanges, y} p)
`ap` (#{peek XWindowChanges, width} p)
`ap` (#{peek XWindowChanges, height} p)
`ap` (#{peek XWindowChanges, border_width} p)
`ap` (#{peek XWindowChanges, sibling} p)
`ap` (#{peek XWindowChanges, stack_mode} p)
foreign import ccall unsafe "XlibExtras.h XConfigureWindow"
xConfigureWindow :: Display -> Window -> CULong -> Ptr WindowChanges -> IO Int
configureWindow :: Display -> Window -> CULong -> WindowChanges -> IO ()
configureWindow d w m c = do
with c (xConfigureWindow d w m)
return ()
|
