Some initial systray code

lib/Phi/Bindings/Util.hsc

@@ -1,10 +1,13 @@
 {-# LANGUAGE ForeignFunctionInterface #-}
 
 module Phi.Bindings.Util ( setClassHint
+                         , visualIDFromVisual
+                         , putClientMessage
                          , createXlibSurface
                          ) where
 
 
+#include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <cairo.h>
 #include <cairo-xlib.h>
@@ -14,6 +17,7 @@ import Foreign.C.String (withCString)
 import Foreign.C.Types
 import Foreign.Ptr
 import Foreign.Marshal.Alloc (alloca, allocaBytes)
+import Foreign.Marshal.Array
 import Foreign.Storable
 
 import Graphics.X11.Xlib
@@ -33,6 +37,17 @@ setClassHint disp wnd hint = allocaBytes (#size XClassHint) $ \p ->
     (#poke XClassHint, res_class) p res_class
     xSetClassHint disp wnd p
 
+foreign import ccall unsafe "X11/Xlib.h XVisualIDFromVisual"
+  visualIDFromVisual :: Visual -> VisualID
+
+putClientMessage :: XEventPtr -> Window -> Atom -> [CLong] -> IO ()
+putClientMessage event window message_type messageData = do
+  setEventType event clientMessage
+  (#poke XClientMessageEvent, window) event window
+  (#poke XClientMessageEvent, message_type) event message_type
+  (#poke XClientMessageEvent, format) event (32 :: CInt)
+  pokeArray ((#ptr XClientMessageEvent, data.l) event) $ take 5 messageData
+
 foreign import ccall unsafe "cairo-xlib.h cairo_xlib_surface_create"
   xlibSurfaceCreate :: Display -> Drawable -> Visual -> CInt -> CInt -> IO (Ptr Surface)
 
@@ -42,3 +57,4 @@ createXlibSurface dpy drawable visual width height = do
   surface <- mkSurface surfacePtr
   manageSurface surface
   return surface
+