dix: move focus handling into enterleave.c.

This commit moves the focus handling from events.c into enterleave.c and
implements a model similar to the core enter/leave model.
For a full description of the model, see:
http://lists.freedesktop.org/archives/xorg/2008-December/041740.html

This commit also gets rid of the focusinout array in the WindowRec, ditching
it in favour of a local array that keeps the current focus window for each
device.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

dix/enterleave.h

@@ -38,6 +38,13 @@ extern void DoEnterLeaveEvents(
     int mode
 );
 
+extern void DoFocusEvents(
+    DeviceIntPtr pDev,
+    WindowPtr fromWin,
+    WindowPtr toWin,
+    int mode
+);
+
 extern void EnterLeaveEvent(
     DeviceIntPtr mouse,
     int type,
@@ -67,4 +74,22 @@ extern void EnterWindow(DeviceIntPtr dev,
                         WindowPtr win,
                         int mode);
 
+
+extern void CoreFocusEvent(DeviceIntPtr kbd,
+                           int type,
+                           int mode,
+                           int detail,
+                           WindowPtr pWin);
+
+extern void DeviceFocusEvent(DeviceIntPtr kbd,
+                             int type,
+                             int mode,
+                             int detail,
+                             WindowPtr pWin);
+
+extern void SetFocusIn(DeviceIntPtr kbd,
+                       WindowPtr win);
+
+extern void SetFocusOut(DeviceIntPtr dev,
+                        WindowPtr win);
 #endif /* _ENTERLEAVE_H_ */