Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 1513 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/xfree86/common/xf86Xinput.c b/nx-X11/programs/Xserver/hw/xfree86/common/xf86Xinput.c
new file mode 100644
index 000000000..cc9e76361
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/xfree86/common/xf86Xinput.c
@@ -0,0 +1,1513 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Xinput.c,v 3.70 2003/11/03 05:11:02 tsi Exp $ */
+/*
+ * Copyright 1995-1999 by Frederic Lepied, France. <Lepied@XFree86.org>
+ *                                                                            
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is  hereby granted without fee, provided that
+ * the  above copyright   notice appear  in   all  copies and  that both  that
+ * copyright  notice   and   this  permission   notice  appear  in  supporting
+ * documentation, and that   the  name of  Frederic   Lepied not  be  used  in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific,  written      prior  permission.     Frederic  Lepied   makes  no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.                   
+ *                                                                            
+ * FREDERIC  LEPIED DISCLAIMS ALL   WARRANTIES WITH REGARD  TO  THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED   WARRANTIES OF MERCHANTABILITY  AND   FITNESS, IN NO
+ * EVENT  SHALL FREDERIC  LEPIED BE   LIABLE   FOR ANY  SPECIAL, INDIRECT   OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA  OR PROFITS, WHETHER  IN  AN ACTION OF  CONTRACT,  NEGLIGENCE OR OTHER
+ * TORTIOUS  ACTION, ARISING    OUT OF OR   IN  CONNECTION  WITH THE USE    OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+/*
+ * Copyright (c) 2000-2002 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+/* $XConsortium: xf86Xinput.c /main/14 1996/10/27 11:05:25 kaleb $ */
+/* $XdotOrg: xc/programs/Xserver/hw/xfree86/common/xf86Xinput.c,v 1.7 2005/10/21 19:06:13 ajax Exp $ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <X11/Xfuncproto.h>
+#include <X11/Xmd.h>
+#ifdef XINPUT
+#include <X11/extensions/XI.h>
+#include <X11/extensions/XIproto.h>
+#endif
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "xf86Xinput.h"
+#ifdef XINPUT
+#include "XIstubs.h"
+#endif
+#include "mipointer.h"
+#include "xf86InPriv.h"
+
+#ifdef DPMSExtension
+#define DPMS_SERVER
+#include <X11/extensions/dpms.h>
+#include "dpmsproc.h"
+#endif
+
+#ifdef XFreeXDGA
+#include "dgaproc.h"
+#endif
+
+#include "exevents.h"	/* AddInputDevice */
+#include "exglobals.h"
+
+#define EXTENSION_PROC_ARGS void *
+#include "extnsionst.h"
+#include "extinit.h"	/* LookupDeviceIntRec */
+
+#include "windowstr.h"	/* screenIsSaved */
+
+#include <stdarg.h>
+
+#include "osdep.h"		/* EnabledDevices */
+#include <X11/Xpoll.h>
+#include "xf86_OSproc.h"	/* sigio stuff */
+
+/******************************************************************************
+ * debugging macro
+ *****************************************************************************/
+#ifdef DBG
+#undef DBG
+#endif
+#ifdef DEBUG
+#undef DEBUG
+#endif
+
+#define DEBUG 0
+
+#if DEBUG
+static int      debug_level = 0;
+
+#define DBG(lvl, f) {if ((lvl) <= debug_level) f;}
+#else
+#define DBG(lvl, f)
+#endif
+
+/******************************************************************************
+ * macros
+ *****************************************************************************/
+#define ENQUEUE(e) xf86eqEnqueue((e))
+
+/***********************************************************************
+ *
+ * xf86AlwaysCoreControl --
+ *	
+ *	Control proc for the integer feedback that controls the always
+ * core feature.
+ *
+ ***********************************************************************
+ */
+static void
+xf86AlwaysCoreControl(DeviceIntPtr	device,
+		      IntegerCtrl	*control)
+{
+}
+
+/***********************************************************************
+ *
+ * Core devices functions --
+ *	
+ *	Test if device is the core device by checking the
+ * value of always core feedback and the inputInfo struct.
+ *
+ ***********************************************************************
+ */
+int
+xf86IsCorePointer(DeviceIntPtr	device)
+{
+    return(device == inputInfo.pointer);
+}
+
+static int
+xf86ShareCorePointer(DeviceIntPtr	device)
+{
+    LocalDevicePtr	local = (LocalDevicePtr) device->public.devicePrivate;
+    
+    return((local->always_core_feedback &&
+	    local->always_core_feedback->ctrl.integer_displayed));
+}
+
+static Bool
+xf86SendDragEvents(DeviceIntPtr	device)
+{
+    LocalDevicePtr local = (LocalDevicePtr) device->public.devicePrivate;
+    
+    if (inputInfo.pointer->button->buttonsDown > 0)
+	return (local->flags & XI86_SEND_DRAG_EVENTS);
+    else
+	return (TRUE);
+}
+
+int
+xf86IsCoreKeyboard(DeviceIntPtr	device)
+{
+    LocalDevicePtr	local = (LocalDevicePtr) device->public.devicePrivate;
+    
+    return((local->flags & XI86_ALWAYS_CORE) ||
+	   (device == inputInfo.keyboard));
+}
+
+void
+xf86XInputSetSendCoreEvents(LocalDevicePtr local, Bool always)
+{
+    if (always) {
+	local->flags |= XI86_ALWAYS_CORE;
+    } else {
+	local->flags &= ~XI86_ALWAYS_CORE;
+    }
+}
+
+static int xf86CoreButtonState;
+
+/***********************************************************************
+ *
+ * xf86CheckButton --
+ *	
+ *	Test if the core pointer button state is coherent with
+ * the button event to send.
+ *
+ ***********************************************************************
+ */
+Bool
+xf86CheckButton(int	button,
+		int	down)
+{
+    int	check;
+    int bit = (1 << (button - 1));
+
+    check = xf86CoreButtonState & bit;
+    
+    DBG(5, ErrorF("xf86CheckButton "
+		  "button=%d down=%d state=%d check=%d returns ",
+		   button, down, xf86CoreButtonState, check));
+    if ((check && down) || (!check && !down)) {
+	DBG(5, ErrorF("FALSE\n"));
+	return FALSE;
+    }
+    xf86CoreButtonState ^= bit;
+
+    DBG(5, ErrorF("TRUE\n"));
+    return TRUE;
+}
+
+/***********************************************************************
+ *
+ * xf86ProcessCommonOptions --
+ * 
+ *	Process global options.
+ *
+ ***********************************************************************
+ */
+void
+xf86ProcessCommonOptions(LocalDevicePtr local,
+			 pointer	list)
+{
+    if (xf86SetBoolOption(list, "AlwaysCore", 0) ||
+	xf86SetBoolOption(list, "SendCoreEvents", 0)) {
+	local->flags |= XI86_ALWAYS_CORE;
+	xf86Msg(X_CONFIG, "%s: always reports core events\n", local->name);
+    }
+
+    if (xf86SetBoolOption(list, "CorePointer", 0)) {
+	local->flags |= XI86_CORE_POINTER;
+	xf86Msg(X_CONFIG, "%s: Core Pointer\n", local->name);
+    }
+
+    if (xf86SetBoolOption(list, "CoreKeyboard", 0)) {
+	local->flags |= XI86_CORE_KEYBOARD;
+	xf86Msg(X_CONFIG, "%s: Core Keyboard\n", local->name);
+    }
+
+    if (xf86SetBoolOption(list, "SendDragEvents", 1)) {
+	local->flags |= XI86_SEND_DRAG_EVENTS;
+    } else {
+	xf86Msg(X_CONFIG, "%s: doesn't report drag events\n", local->name);
+    }
+    
+    local->history_size = xf86SetIntOption(list, "HistorySize", 0);
+
+    if (local->history_size > 0) {
+	xf86Msg(X_CONFIG, "%s: has a history of %d motions\n", local->name,
+		local->history_size);
+    }
+}
+
+/***********************************************************************
+ *
+ * xf86XinputFinalizeInit --
+ * 
+ *	Create and initialize an integer feedback to control the always
+ * core feature.
+ *
+ ***********************************************************************
+ */
+void
+xf86XinputFinalizeInit(DeviceIntPtr	dev)
+{
+    LocalDevicePtr        local = (LocalDevicePtr)dev->public.devicePrivate;
+
+    local->dxremaind = 0.0;
+    local->dyremaind = 0.0;
+    
+    if (InitIntegerFeedbackClassDeviceStruct(dev, xf86AlwaysCoreControl) == FALSE) {
+	ErrorF("Unable to init integer feedback for always core feature\n");
+    } else {
+	local->always_core_feedback = dev->intfeed;
+	dev->intfeed->ctrl.integer_displayed = (local->flags & XI86_ALWAYS_CORE) ? 1 : 0;
+    }
+}
+
+/***********************************************************************
+ *
+ * xf86ActivateDevice --
+ * 
+ *	Initialize an input device.
+ *
+ ***********************************************************************
+ */
+void
+xf86ActivateDevice(LocalDevicePtr local)
+{
+    DeviceIntPtr	dev;
+
+    if (local->flags & XI86_CONFIGURED) {
+	int	open_on_init;
+	
+	open_on_init = local->flags &
+		(XI86_OPEN_ON_INIT |
+		 XI86_ALWAYS_CORE | XI86_CORE_POINTER | XI86_CORE_KEYBOARD);
+	
+	dev = AddInputDevice(local->device_control,
+			     open_on_init);
+	if (dev == NULL)
+	    FatalError("Too many input devices");
+	
+	local->atom = MakeAtom(local->type_name,
+			       strlen(local->type_name),
+			       TRUE);
+	AssignTypeAndName (dev, local->atom, local->name);
+	dev->public.devicePrivate = (pointer) local;
+	local->dev = dev;      
+	
+	xf86XinputFinalizeInit(dev);
+
+	/*
+	 * XXX Can a single device instance be both core keyboard and
+	 * core pointer?  If so, this should be changed.
+	 */
+	if (local->flags & XI86_CORE_POINTER)
+	    RegisterPointerDevice(dev);
+	else if (local->flags & XI86_CORE_KEYBOARD)
+	    RegisterKeyboardDevice(dev);
+#ifdef XINPUT
+	else
+	    RegisterOtherDevice(dev);
+#endif
+
+	if (serverGeneration == 1) 
+	    xf86Msg(X_INFO, "XINPUT: Adding extended input device \"%s\" (type: %s)\n",
+		    local->name, local->type_name);
+    }
+}
+
+
+#ifdef XINPUT
+/***********************************************************************
+ *
+ * Caller:	ProcXOpenDevice
+ *
+ * This is the implementation-dependent routine to open an input device.
+ * Some implementations open all input devices when the server is first
+ * initialized, and never close them.  Other implementations open only
+ * the X pointer and keyboard devices during server initialization,
+ * and only open other input devices when some client makes an
+ * XOpenDevice request.  This entry point is for the latter type of 
+ * implementation.
+ *
+ * If the physical device is not already open, do it here.  In this case,
+ * you need to keep track of the fact that one or more clients has the
+ * device open, and physically close it when the last client that has
+ * it open does an XCloseDevice.
+ *
+ * The default implementation is to do nothing (assume all input devices
+ * are opened during X server initialization and kept open).
+ *
+ ***********************************************************************
+ */
+
+void
+OpenInputDevice(DeviceIntPtr	dev,
+		ClientPtr	client,
+		int		*status)
+{
+    if (!dev->inited) {
+	*status = BadDevice;
+    } else {
+	if (!dev->public.on) {
+	    if (!EnableDevice(dev)) {
+		*status = BadDevice;
+	    } else {
+		/* to prevent ProcXOpenDevice to call EnableDevice again */
+		dev->startup = FALSE;
+	    }
+	}
+    }
+}
+
+
+/***********************************************************************
+ *
+ * Caller:	ProcXChangeKeyboardDevice
+ *
+ * This procedure does the implementation-dependent portion of the work
+ * needed to change the keyboard device.
+ *
+ * The X keyboard device has a FocusRec.  If the device that has been 
+ * made into the new X keyboard did not have a FocusRec, 
+ * ProcXChangeKeyboardDevice will allocate one for it.
+ *
+ * If you do not want clients to be able to focus the old X keyboard
+ * device, call DeleteFocusClassDeviceStruct to free the FocusRec.
+ *
+ * If you support input devices with keys that you do not want to be 
+ * used as the X keyboard, you need to check for them here and return 
+ * a BadDevice error.
+ *
+ * The default implementation is to do nothing (assume you do want
+ * clients to be able to focus the old X keyboard).  The commented-out
+ * sample code shows what you might do if you don't want the default.
+ *
+ ***********************************************************************
+ */
+
+int
+ChangeKeyboardDevice (DeviceIntPtr old_dev, DeviceIntPtr new_dev)
+{
+  /**********************************************************************
+   * DeleteFocusClassDeviceStruct(old_dev);	 * defined in xchgptr.c *
+   **********************************************************************/
+  return !Success;
+}
+
+
+/***********************************************************************
+ *
+ * Caller:	ProcXChangePointerDevice
+ *
+ * This procedure does the implementation-dependent portion of the work
+ * needed to change the pointer device.
+ *
+ * The X pointer device does not have a FocusRec.  If the device that
+ * has been made into the new X pointer had a FocusRec, 
+ * ProcXChangePointerDevice will free it.
+ *
+ * If you want clients to be able to focus the old pointer device that
+ * has now become accessible through the input extension, you need to 
+ * add a FocusRec to it here.
+ *
+ * The XChangePointerDevice protocol request also allows the client
+ * to choose which axes of the new pointer device are used to move 
+ * the X cursor in the X- and Y- directions.  If the axes are different
+ * than the default ones, you need to keep track of that here.
+ *
+ * If you support input devices with valuators that you do not want to be 
+ * used as the X pointer, you need to check for them here and return a 
+ * BadDevice error.
+ *
+ * The default implementation is to do nothing (assume you don't want
+ * clients to be able to focus the old X pointer).  The commented-out
+ * sample code shows what you might do if you don't want the default.
+ *
+ ***********************************************************************
+ */
+
+int
+ChangePointerDevice (
+     DeviceIntPtr	old_dev,
+     DeviceIntPtr	new_dev,
+     unsigned char	x,
+     unsigned char	y)
+{
+  /************************************************************************
+    InitFocusClassDeviceStruct(old_dev);	* allow focusing old ptr*
+    
+    x_axis = x;					* keep track of new x-axis*
+    y_axis = y;					* keep track of new y-axis*
+    if (x_axis != 0 || y_axis != 1)
+    axes_changed = TRUE;			* remember axes have changed*
+    else
+    axes_changed = FALSE;
+   *************************************************************************/
+
+  /*
+   * We don't allow axis swap or other exotic features.
+   */
+  if (x == 0 && y == 1) {
+      LocalDevicePtr	old_local = (LocalDevicePtr)old_dev->public.devicePrivate;
+      LocalDevicePtr	new_local = (LocalDevicePtr)new_dev->public.devicePrivate;
+      
+      InitFocusClassDeviceStruct(old_dev);
+    
+      /* Restore Extended motion history information */
+      old_dev->valuator->GetMotionProc   = old_local->motion_history_proc;
+      old_dev->valuator->numMotionEvents = old_local->history_size;
+
+      /* Save Extended motion history information */
+      new_local->motion_history_proc = new_dev->valuator->GetMotionProc;
+      new_local->history_size	     = new_dev->valuator->numMotionEvents;
+      
+      /* Set Core motion history information */
+      new_dev->valuator->GetMotionProc   = miPointerGetMotionEvents;
+      new_dev->valuator->numMotionEvents = miPointerGetMotionBufferSize();
+      
+    return Success;
+  }
+  else
+    return !Success;
+}
+
+
+/***********************************************************************
+ *
+ * Caller:	ProcXCloseDevice
+ *
+ * Take care of implementation-dependent details of closing a device.
+ * Some implementations may actually close the device, others may just
+ * remove this clients interest in that device.
+ *
+ * The default implementation is to do nothing (assume all input devices
+ * are initialized during X server initialization and kept open).
+ *
+ ***********************************************************************
+ */
+
+void
+CloseInputDevice (DeviceIntPtr d, ClientPtr client)
+{
+  ErrorF("ProcXCloseDevice to close or not ?\n");
+}
+
+
+/***********************************************************************
+ *
+ * Caller:	ProcXListInputDevices
+ *
+ * This is the implementation-dependent routine to initialize an input 
+ * device to the point that information about it can be listed.
+ * Some implementations open all input devices when the server is first
+ * initialized, and never close them.  Other implementations open only
+ * the X pointer and keyboard devices during server initialization,
+ * and only open other input devices when some client makes an
+ * XOpenDevice request.  If some other process has the device open, the
+ * server may not be able to get information about the device to list it.
+ *
+ * This procedure should be used by implementations that do not initialize
+ * all input devices at server startup.  It should do device-dependent
+ * initialization for any devices not previously initialized, and call
+ * AddInputDevice for each of those devices so that a DeviceIntRec will be 
+ * created for them.
+ *
+ * The default implementation is to do nothing (assume all input devices
+ * are initialized during X server initialization and kept open).
+ * The commented-out sample code shows what you might do if you don't want 
+ * the default.
+ *
+ ***********************************************************************
+ */
+
+void
+AddOtherInputDevices ()
+{
+}
+
+
+/****************************************************************************
+ *
+ * Caller:	ProcXSetDeviceMode
+ *
+ * Change the mode of an extension device.
+ * This function is used to change the mode of a device from reporting
+ * relative motion to reporting absolute positional information, and
+ * vice versa.
+ * The default implementation below is that no such devices are supported.
+ *
+ ***********************************************************************
+ */
+
+int
+SetDeviceMode (ClientPtr client, DeviceIntPtr dev, int mode)
+{
+  LocalDevicePtr        local = (LocalDevicePtr)dev->public.devicePrivate;
+
+  if (local->switch_mode) {
+    return (*local->switch_mode)(client, dev, mode);
+  }
+  else
+    return BadMatch;
+}
+
+
+/***********************************************************************
+ *
+ * Caller:	ProcXSetDeviceValuators
+ *
+ * Set the value of valuators on an extension input device.
+ * This function is used to set the initial value of valuators on
+ * those input devices that are capable of reporting either relative
+ * motion or an absolute position, and allow an initial position to be set.
+ * The default implementation below is that no such devices are supported.
+ *
+ ***********************************************************************
+ */
+
+int
+SetDeviceValuators (ClientPtr client, DeviceIntPtr dev, int *valuators,
+		    int first_valuator, int num_valuators)
+{
+  return BadMatch;
+}
+
+
+/***********************************************************************
+ *
+ * Caller:	ProcXChangeDeviceControl
+ *
+ * Change the specified device controls on an extension input device.
+ *
+ ***********************************************************************
+ */
+
+int
+ChangeDeviceControl (ClientPtr client, DeviceIntPtr dev, xDeviceCtl *control)
+{
+  LocalDevicePtr        local = (LocalDevicePtr)dev->public.devicePrivate;
+
+  if (!local->control_proc) {
+      return (BadMatch);
+  }
+  else {
+      return (*local->control_proc)(local, control);
+  }
+}
+#endif
+
+/*
+ * adapted from mieq.c to support extended events
+ *
+ */
+#define QUEUE_SIZE  256
+
+typedef struct _Event {
+    xEvent	event;
+#ifdef XINPUT
+  deviceValuator val;
+#endif
+    ScreenPtr	pScreen;
+} EventRec, *EventPtr;
+
+typedef struct _EventQueue {
+    HWEventQueueType head, tail;
+    CARD32	lastEventTime;	    /* to avoid time running backwards */
+    Bool	lastMotion;
+    EventRec	events[QUEUE_SIZE]; /* static allocation for signals */
+    DevicePtr	pKbd, pPtr;	    /* device pointer, to get funcs */
+    ScreenPtr	pEnqueueScreen;	    /* screen events are being delivered to */
+    ScreenPtr	pDequeueScreen;	    /* screen events are being dispatched to */
+} EventQueueRec, *EventQueuePtr;
+
+static EventQueueRec xf86EventQueue;
+
+Bool
+xf86eqInit (DevicePtr pKbd, DevicePtr pPtr)
+{
+    xf86EventQueue.head = xf86EventQueue.tail = 0;
+    xf86EventQueue.lastEventTime = GetTimeInMillis ();
+    xf86EventQueue.pKbd = pKbd;
+    xf86EventQueue.pPtr = pPtr;
+    xf86EventQueue.lastMotion = FALSE;
+    xf86EventQueue.pEnqueueScreen = screenInfo.screens[0];
+    xf86EventQueue.pDequeueScreen = xf86EventQueue.pEnqueueScreen;
+    SetInputCheck (&xf86EventQueue.head, &xf86EventQueue.tail);
+    return TRUE;
+}
+
+/*
+ * Must be reentrant with ProcessInputEvents.  Assumption: xf86eqEnqueue
+ * will never be interrupted.  If this is called from both signal
+ * handlers and regular code, make sure the signal is suspended when
+ * called from regular code.
+ */
+
+void
+xf86eqEnqueue (xEvent *e)
+{
+    int		oldtail, newtail;
+    Bool	isMotion;
+#ifdef XINPUT
+    int		count;
+    
+    xf86AssertBlockedSIGIO ("xf86eqEnqueue");
+    switch (e->u.u.type) {
+    case KeyPress:
+    case KeyRelease:
+#ifdef XFreeXDGA
+	/* we do this here, because nobody seems to be calling
+	   xf86PostKeyEvent().  We can't steal MotionNotify events here
+	   because the motion-relative information has been lost already. */
+	if(DGAStealKeyEvent(xf86EventQueue.pEnqueueScreen->myNum, e))
+	    return;
+#endif
+	/* fall through */
+    case ButtonPress:
+    case ButtonRelease:
+    case MotionNotify:
+        count = 1;
+        break;
+    default:
+#ifdef XFreeXDGA
+	if (DGAIsDgaEvent (e))
+	{
+	    count = 1;
+	    break;
+	}
+#endif
+	if (!((deviceKeyButtonPointer *) e)->deviceid & MORE_EVENTS) {
+            count = 1;
+	}
+        else {
+	    count = 2;
+	}
+        break;
+    }
+#endif
+
+    oldtail = xf86EventQueue.tail;
+    isMotion = e->u.u.type == MotionNotify;
+    if (isMotion && xf86EventQueue.lastMotion && oldtail != xf86EventQueue.head) {
+	if (oldtail == 0)
+	    oldtail = QUEUE_SIZE;
+	oldtail = oldtail - 1;
+    }
+    else {
+    	newtail = oldtail + 1;
+    	if (newtail == QUEUE_SIZE)
+	    newtail = 0;
+    	/* Toss events which come in late */
+    	if (newtail == xf86EventQueue.head)
+	    return;
+	xf86EventQueue.tail = newtail;
+    }
+    
+    xf86EventQueue.lastMotion = isMotion;
+    xf86EventQueue.events[oldtail].event = *e;
+#ifdef XINPUT
+    if (count == 2) {
+	xf86EventQueue.events[oldtail].val = *((deviceValuator *) (((deviceKeyButtonPointer *) e)+1));
+    }
+#endif
+    /*
+     * Make sure that event times don't go backwards - this
+     * is "unnecessary", but very useful
+     */
+    if (e->u.keyButtonPointer.time < xf86EventQueue.lastEventTime &&
+	xf86EventQueue.lastEventTime - e->u.keyButtonPointer.time < 10000) {
+	
+	xf86EventQueue.events[oldtail].event.u.keyButtonPointer.time =
+	    xf86EventQueue.lastEventTime;
+    }
+    xf86EventQueue.events[oldtail].pScreen = xf86EventQueue.pEnqueueScreen;
+}
+
+/*
+ * Call this from ProcessInputEvents()
+ */
+void
+xf86eqProcessInputEvents ()
+{
+    EventRec	*e;
+    int		x, y;
+    struct {
+	xEvent	event;
+#ifdef XINPUT
+	deviceValuator	val;
+#endif
+    }		xe;
+#ifdef XINPUT
+    DeviceIntPtr                dev;
+    int                         id, count;
+    deviceKeyButtonPointer      *dev_xe;
+#endif
+
+    while (xf86EventQueue.head != xf86EventQueue.tail) {
+	if (screenIsSaved == SCREEN_SAVER_ON)
+	    SaveScreens (SCREEN_SAVER_OFF, ScreenSaverReset);
+#ifdef DPMSExtension
+        if (DPMSPowerLevel != DPMSModeOn)
+            DPMSSet(DPMSModeOn);
+#endif
+
+	e = &xf86EventQueue.events[xf86EventQueue.head];
+	/*
+	 * Assumption - screen switching can only occur on motion events
+	 */
+	if (e->pScreen != xf86EventQueue.pDequeueScreen) {
+	    xf86EventQueue.pDequeueScreen = e->pScreen;
+	    x = e->event.u.keyButtonPointer.rootX;
+	    y = e->event.u.keyButtonPointer.rootY;
+	    if (xf86EventQueue.head == QUEUE_SIZE - 1)
+	    	xf86EventQueue.head = 0;
+	    else
+	    	++xf86EventQueue.head;
+	    NewCurrentScreen (xf86EventQueue.pDequeueScreen, x, y);
+	}
+	else {
+	    xe.event = e->event;
+	    xe.val = e->val;
+	    if (xf86EventQueue.head == QUEUE_SIZE - 1)
+	    	xf86EventQueue.head = 0;
+	    else
+	    	++xf86EventQueue.head;
+	    switch (xe.event.u.u.type) {
+	    case KeyPress:
+	    case KeyRelease:
+	    	(*xf86EventQueue.pKbd->processInputProc)
+		    (&xe.event, (DeviceIntPtr)xf86EventQueue.pKbd, 1);
+	    	break;
+#ifdef XINPUT
+            case ButtonPress:
+            case ButtonRelease:
+            case MotionNotify:
+	    	(*(inputInfo.pointer->public.processInputProc))
+		    (&xe.event, (DeviceIntPtr)inputInfo.pointer, 1);
+		break;
+
+	    default:
+#ifdef XFreeXDGA
+		if (DGADeliverEvent (xf86EventQueue.pDequeueScreen, &xe.event))
+		    break;
+#endif
+		dev_xe = (deviceKeyButtonPointer *) &xe.event;
+		id = dev_xe->deviceid & DEVICE_BITS;
+		if (!(dev_xe->deviceid & MORE_EVENTS)) {
+		    count = 1;
+		}
+		else {
+		    count = 2;
+		}
+		dev = LookupDeviceIntRec(id);
+		if (dev == NULL) {
+		    ErrorF("LookupDeviceIntRec id=0x%x not found\n", id);
+/*                   FatalError("xf86eqProcessInputEvents : device not found.\n");
+ */
+		    break;
+		}
+		if (!dev->public.processInputProc) {
+		    FatalError("xf86eqProcessInputEvents : device has no input proc.\n");
+		    break;
+		}
+		(*dev->public.processInputProc)(&xe.event, dev, count);
+#else
+	    default:
+	    	(*xf86EventQueue.pPtr->processInputProc)
+		    (&xe.event, (DeviceIntPtr)xf86EventQueue.pPtr, 1);
+#endif
+	    	break;
+	    }
+	}
+    }
+}
+
+void
+xf86eqSwitchScreen(ScreenPtr	pScreen,
+		   Bool		fromDIX)
+{
+    xf86EventQueue.pEnqueueScreen = pScreen;
+  
+    if (fromDIX)
+	xf86EventQueue.pDequeueScreen = pScreen;
+}
+
+/* 
+ * convenient functions to post events
+ */
+
+void
+xf86PostMotionEvent(DeviceIntPtr	device,
+		    int			is_absolute,
+		    int			first_valuator,
+		    int			num_valuators,
+		    ...)
+{
+    va_list			var;
+    int				loop;
+    xEvent			xE[2];
+    deviceKeyButtonPointer	*xev  = (deviceKeyButtonPointer*) xE;
+    deviceValuator		*xv   = (deviceValuator*) xev+1;
+    LocalDevicePtr		local = (LocalDevicePtr) device->public.devicePrivate;
+    char			*buff = 0;
+    Time			current;
+    Bool			is_core = xf86IsCorePointer(device);
+    Bool			is_shared = xf86ShareCorePointer(device);
+    Bool			drag = xf86SendDragEvents(device);
+    ValuatorClassPtr		val = device->valuator;
+    int				valuator[6];
+    int				oldaxis[6];
+    int				*axisvals;
+    int				dx = 0, dy = 0;
+    float			mult;
+    int				x, y;
+    int				loop_start;
+    int				i;
+    int				num;
+    
+    DBG(5, ErrorF("xf86PostMotionEvent BEGIN 0x%x(%s) is_core=%s is_shared=%s is_absolute=%s\n",
+		  device, device->name,
+		  is_core ? "True" : "False",
+		  is_shared ? "True" : "False",
+		  is_absolute ? "True" : "False"));
+    
+    xf86Info.lastEventTime = xev->time = current = GetTimeInMillis();
+    
+    if (!is_core) {
+      if (HAS_MOTION_HISTORY(local)) {
+	buff = ((char *)local->motion_history +
+		(sizeof(INT32) * local->dev->valuator->numAxes + sizeof(Time)) * local->last);
+      }
+    }
+
+    if (num_valuators && (!val || (first_valuator + num_valuators > val->numAxes))) {
+	ErrorF("Bad valuators reported for device \"%s\"\n", device->name);
+	return;
+    }
+
+    axisvals = val->axisVal;
+    
+    va_start(var, num_valuators);
+
+    loop_start = first_valuator;
+    for(loop=0; loop<num_valuators; loop++) {
+	
+	valuator[loop%6] = va_arg(var,int);
+	
+	if (loop % 6 == 5 || loop == num_valuators - 1)	{
+	    num = loop % 6 + 1;
+	    /*
+	     * Adjust first two relative valuators
+	     */
+	    if (!is_absolute && num_valuators >= 2 && loop_start == 0) {
+		
+		dx = valuator[0];
+		dy = valuator[1];
+
+		/*
+		 * Accelerate
+		 */
+		if (device->ptrfeed && device->ptrfeed->ctrl.num) {
+		    /* modeled from xf86Events.c */
+		    if (device->ptrfeed->ctrl.threshold) {
+			if ((abs(dx) + abs(dy)) >= device->ptrfeed->ctrl.threshold) {
+			    local->dxremaind = ((float)dx * (float)(device->ptrfeed->ctrl.num)) /
+			        (float)(device->ptrfeed->ctrl.den) + local->dxremaind;
+			    valuator[0] = (int)local->dxremaind;
+			    local->dxremaind = local->dxremaind - (float)valuator[0];
+			    
+			    local->dyremaind = ((float)dy * (float)(device->ptrfeed->ctrl.num)) /
+			        (float)(device->ptrfeed->ctrl.den) + local->dyremaind;
+			    valuator[1] = (int)local->dyremaind;
+			    local->dyremaind = local->dyremaind - (float)valuator[1];
+			}
+		    }
+		    else if (dx || dy) {
+			mult = pow((float)(dx*dx+dy*dy),
+				   ((float)(device->ptrfeed->ctrl.num) /
+				    (float)(device->ptrfeed->ctrl.den) - 1.0) / 
+				   2.0) / 2.0;
+			if (dx) {
+			    local->dxremaind = mult * (float)dx + local->dxremaind;
+			    valuator[0] = (int)local->dxremaind;
+			    local->dxremaind = local->dxremaind - (float)valuator[0];
+			}
+			if (dy) {
+			    local->dyremaind = mult * (float)dy + local->dyremaind;
+			    valuator[1] = (int)local->dyremaind;
+			    local->dyremaind = local->dyremaind - (float)valuator[1];
+			}
+		    }
+		    DBG(6, ErrorF("xf86PostMotionEvent acceleration v0=%d v1=%d\n",
+				  valuator[0], valuator[1]));
+		}
+		
+		/*
+		 * Map current position back to device space in case
+		 * the cursor was warped
+		 */
+		if (is_core || is_shared)
+		{
+		    miPointerPosition (&x, &y);
+		    if (local->reverse_conversion_proc)
+			(*local->reverse_conversion_proc)(local, x, y, axisvals);
+		    else
+		    {
+			axisvals[0] = x;
+			axisvals[1] = y;
+		    }
+		}
+	    }
+		
+	    /*
+	     * Update axes
+	     */
+	    for (i = 0; i < num; i++)
+	    {
+		oldaxis[i] = axisvals[loop_start + i];
+	        if (is_absolute)
+		    axisvals[loop_start + i] = valuator[i];
+		else
+		    axisvals[loop_start + i] += valuator[i];
+	    }
+		
+	    /*
+	     * Deliver extension event
+	     */
+	    if (!is_core) {
+		xev->type = DeviceMotionNotify;
+		xev->detail = 0;
+		xev->deviceid = device->id | MORE_EVENTS;
+            
+		xv->type = DeviceValuator;
+		xv->deviceid = device->id;
+	    
+		xv->device_state = 0;
+		xv->num_valuators = num;
+		xv->first_valuator = loop_start;
+		memcpy (&xv->valuator0, &axisvals[loop_start],
+			sizeof(INT32)*xv->num_valuators);
+		
+		if (HAS_MOTION_HISTORY(local)) {
+		    *(Time*)buff = current;
+		    memcpy(buff+sizeof(Time)+sizeof(INT32)*xv->first_valuator,
+			   &axisvals[loop_start],
+			   sizeof(INT32)*xv->num_valuators);
+		}
+		ENQUEUE(xE);
+	    }
+	    
+	    /*
+	     * Deliver core event
+	     */
+	    if (is_core ||
+		(is_shared && num_valuators >= 2 && loop_start == 0)) {
+#ifdef XFreeXDGA
+		/*
+		 * Let DGA peek at the event and steal it
+		 */
+		xev->type = MotionNotify;
+		xev->detail = 0;
+		if (is_absolute)
+		{
+		    dx = axisvals[0] - oldaxis[0];
+		    dy = axisvals[1] - oldaxis[1];
+		}
+		if (DGAStealMouseEvent(xf86EventQueue.pEnqueueScreen->myNum,
+				       xE, dx, dy))
+		    continue;
+#endif
+		if (!(*local->conversion_proc)(local, loop_start, num,
+					       axisvals[0], axisvals[1],
+					       axisvals[2], axisvals[3],
+					       axisvals[4], axisvals[5],
+					       &x, &y))
+		    continue;
+
+		if (drag)
+		    miPointerAbsoluteCursor (x, y, current);
+		/*
+		 * Retrieve the position
+		 */
+		miPointerPosition (&x, &y);
+		if (local->reverse_conversion_proc)
+		    (*local->reverse_conversion_proc)(local, x, y, axisvals);
+		else
+		{
+		    axisvals[0] = x;
+		    axisvals[1] = y;
+		}
+	    }
+	    loop_start += 6;
+	}
+    }
+    va_end(var);
+    if (HAS_MOTION_HISTORY(local)) {
+	local->last = (local->last + 1) % device->valuator->numMotionEvents;
+	if (local->last == local->first)
+	    local->first = (local->first + 1) % device->valuator->numMotionEvents;
+    }
+    DBG(5, ErrorF("xf86PostMotionEvent END   0x%x(%s) is_core=%s is_shared=%s\n",
+		  device, device->name,
+		  is_core ? "True" : "False",
+		  is_shared ? "True" : "False"));
+}
+
+void
+xf86PostProximityEvent(DeviceIntPtr	device,
+		       int		is_in,
+		       int		first_valuator,
+		       int		num_valuators,
+		       ...)
+{
+    va_list			var;
+    int				loop;
+    xEvent			xE[2];
+    deviceKeyButtonPointer	*xev = (deviceKeyButtonPointer*) xE;
+    deviceValuator		*xv = (deviceValuator*) xev+1;
+    ValuatorClassPtr		val = device->valuator;
+    Bool			is_core = xf86IsCorePointer(device);
+    Bool			is_absolute = val && ((val->mode & 1) == Relative);
+    
+    DBG(5, ErrorF("xf86PostProximityEvent BEGIN 0x%x(%s) prox=%s is_core=%s is_absolute=%s\n",
+		  device, device->name, is_in ? "true" : "false",
+		  is_core ? "True" : "False",
+		  is_absolute ? "True" : "False"));
+    
+    if (is_core) {
+	return;
+    }
+  
+    if (num_valuators && (!val || (first_valuator + num_valuators > val->numAxes))) {
+	ErrorF("Bad valuators reported for device \"%s\"\n", device->name);
+	return;
+    }
+
+    xev->type = is_in ? ProximityIn : ProximityOut;
+    xev->detail = 0;
+    xev->deviceid = device->id | MORE_EVENTS;
+	
+    xv->type = DeviceValuator;
+    xv->deviceid = device->id;
+    xv->device_state = 0;
+
+    if ((device->valuator->mode & 1) == Relative) {
+	num_valuators = 0;
+    }
+  
+    if (num_valuators != 0) {
+	int	*axisvals = val->axisVal;
+	    
+	va_start(var, num_valuators);
+
+	for(loop=0; loop<num_valuators; loop++) {
+	    switch (loop % 6) {
+	    case 0:
+		xv->valuator0 = is_absolute ? va_arg(var, int) : axisvals[loop]; 
+		break;
+	    case 1:
+		xv->valuator1 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		break;
+	    case 2:
+		xv->valuator2 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		break;
+	    case 3:
+		xv->valuator3 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		break;
+	    case 4:
+		xv->valuator4 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		break;
+	    case 5:
+		xv->valuator5 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		break;
+	    }
+	    if ((loop % 6 == 5) || (loop == num_valuators - 1)) {
+		xf86Info.lastEventTime = xev->time = GetTimeInMillis();
+
+		xv->num_valuators = (loop % 6) + 1;
+		xv->first_valuator = first_valuator + (loop / 6) * 6;
+		ENQUEUE(xE);
+	    }
+	}
+	va_end(var);
+    }
+    else {
+	/* no valuator */
+	xf86Info.lastEventTime = xev->time = GetTimeInMillis();
+
+	xv->num_valuators = 0;
+	xv->first_valuator = 0;
+	ENQUEUE(xE);
+    }
+    DBG(5, ErrorF("xf86PostProximityEvent END   0x%x(%s) prox=%s is_core=%s is_absolute=%s\n",
+		  device, device->name, is_in ? "true" : "false",
+		  is_core ? "True" : "False",
+		  is_absolute ? "True" : "False"));
+    
+}
+
+void
+xf86PostButtonEvent(DeviceIntPtr	device,
+		    int			is_absolute,
+		    int			button,
+		    int			is_down,
+		    int			first_valuator,
+		    int			num_valuators,
+		    ...)
+{
+    va_list			var;
+    int				loop;
+    xEvent			xE[2];
+    deviceKeyButtonPointer	*xev	        = (deviceKeyButtonPointer*) xE;
+    deviceValuator		*xv	        = (deviceValuator*) xev+1;
+    ValuatorClassPtr		val		= device->valuator;
+    Bool			is_core		= xf86IsCorePointer(device);
+    Bool			is_shared       = xf86ShareCorePointer(device);
+    
+    DBG(5, ErrorF("xf86PostButtonEvent BEGIN 0x%x(%s) button=%d down=%s is_core=%s is_shared=%s is_absolute=%s\n",
+		  device, device->name, button,
+		  is_down ? "True" : "False",
+		  is_core ? "True" : "False",
+		  is_shared ? "True" : "False",
+		  is_absolute ? "True" : "False"));
+    
+    /* Check the core pointer button state not to send an inconsistent
+     * event. This can happen with the AlwaysCore feature.
+     */
+    if ((is_core || is_shared) && 
+	!xf86CheckButton(device->button->map[button], is_down)) 
+    {
+	return;
+    }
+    
+    if (num_valuators && (!val || (first_valuator + num_valuators > val->numAxes))) {
+	ErrorF("Bad valuators reported for device \"%s\"\n", device->name);
+	return;
+    }
+
+    if (!is_core) {
+	xev->type = is_down ? DeviceButtonPress : DeviceButtonRelease;
+	xev->detail = button;
+	xev->deviceid = device->id | MORE_EVENTS;
+	    
+	xv->type = DeviceValuator;
+	xv->deviceid = device->id;
+	xv->device_state = 0;
+
+	if (num_valuators != 0) {
+	    int			*axisvals = val->axisVal;
+	    
+	    va_start(var, num_valuators);
+      
+	    for(loop=0; loop<num_valuators; loop++) {
+		switch (loop % 6) {
+		case 0:
+		    xv->valuator0 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		    break;
+		case 1:
+		    xv->valuator1 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		    break;
+		case 2:
+		    xv->valuator2 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		    break;
+		case 3:
+		    xv->valuator3 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		    break;
+		case 4:
+		    xv->valuator4 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		    break;
+		case 5:
+		    xv->valuator5 = is_absolute ? va_arg(var, int) : axisvals[loop];
+		    break;
+		}
+		if ((loop % 6 == 5) || (loop == num_valuators - 1)) {
+		    xf86Info.lastEventTime = xev->time = GetTimeInMillis();
+		    xv->num_valuators = (loop % 6) + 1;
+		    xv->first_valuator = first_valuator + (loop / 6) * 6;
+		    ENQUEUE(xE);
+		    
+		}
+	    }
+	    va_end(var);
+	}
+	else {
+	    /* no valuator */
+	    xf86Info.lastEventTime = xev->time = GetTimeInMillis();
+	    xv->num_valuators = 0;
+	    xv->first_valuator = 0;
+	    ENQUEUE(xE);
+	}
+    }
+
+    /* removed rootX/rootY as DIX sets these fields */
+    if (is_core || is_shared) {
+	xE->u.u.type = is_down ? ButtonPress : ButtonRelease;
+	xE->u.u.detail =  device->button->map[button];
+	xf86Info.lastEventTime = xE->u.keyButtonPointer.time = GetTimeInMillis();
+	
+#ifdef XFreeXDGA
+	if (!DGAStealMouseEvent(xf86EventQueue.pEnqueueScreen->myNum, xE, 0, 0))
+#endif
+	    ENQUEUE(xE);
+    }
+    DBG(5, ErrorF("xf86PostButtonEvent END\n"));
+}
+
+void
+xf86PostKeyEvent(DeviceIntPtr	device,
+		 unsigned int	key_code,
+		 int		is_down,
+		 int		is_absolute,
+		 int		first_valuator,
+		 int		num_valuators,
+		 ...)
+{
+    va_list			var;
+    int				loop;
+    xEvent			xE[2];
+    deviceKeyButtonPointer	*xev = (deviceKeyButtonPointer*) xE;
+    deviceValuator		*xv = (deviceValuator*) xev+1;
+    
+    va_start(var, num_valuators);
+
+    for(loop=0; loop<num_valuators; loop++) {
+	switch (loop % 6) {
+	case 0:
+	    xv->valuator0 = va_arg(var, int);
+	    break;
+	case 1:
+	    xv->valuator1 = va_arg(var, int);
+	    break;
+	case 2:
+	    xv->valuator2 = va_arg(var, int);
+	    break;
+	case 3:
+	    xv->valuator3 = va_arg(var, int);
+	    break;
+	case 4:
+	    xv->valuator4 = va_arg(var, int);
+	    break;
+	case 5:
+	    xv->valuator5 = va_arg(var, int);
+	    break;
+	}
+	if (((loop % 6 == 5) || (loop == num_valuators - 1))) {
+	    xev->type = is_down ? DeviceKeyPress : DeviceKeyRelease;
+	    xev->detail = key_code;
+	    
+	    xf86Info.lastEventTime = xev->time = GetTimeInMillis();
+	    xev->deviceid = device->id | MORE_EVENTS;
+	    
+	    xv->type = DeviceValuator;
+	    xv->deviceid = device->id;
+	    xv->device_state = 0;
+	    /* if the device is in the relative mode we don't have to send valuators */
+	    xv->num_valuators = is_absolute ? (loop % 6) + 1 : 0;
+	    xv->first_valuator = first_valuator + (loop / 6) * 6;
+	    
+	    ENQUEUE(xE);
+	    /* if the device is in the relative mode only one event is needed */
+	    if (!is_absolute) break;
+	}
+    }
+    va_end(var);
+}
+
+void
+xf86PostKeyboardEvent(DeviceIntPtr      device,
+                      unsigned int      key_code,
+                      int               is_down)
+{
+    xEvent                      xE[2];
+    deviceKeyButtonPointer      *xev = (deviceKeyButtonPointer*) xE;
+
+    if (xf86IsCoreKeyboard(device)) {
+        xev->type = is_down ? KeyPress : KeyRelease;
+    } else {
+        xev->type = is_down ? DeviceKeyPress : DeviceKeyRelease;
+    }
+    xev->detail = key_code;
+    xf86Info.lastEventTime = xev->time = GetTimeInMillis();
+
+#ifdef XFreeXDGA
+    /* if(!DGAStealKeyEvent(xf86EventQueue.pEnqueueScreen->myNum, xE)) */
+#endif
+    ENQUEUE(xE);
+}
+
+/* 
+ * Motion history management.
+ */
+
+void
+xf86MotionHistoryAllocate(LocalDevicePtr	local)
+{
+    ValuatorClassPtr	valuator = local->dev->valuator;
+    
+    if (!HAS_MOTION_HISTORY(local))
+	return;
+    if (local->motion_history) xfree(local->motion_history);
+    local->motion_history = xalloc((sizeof(INT32) * valuator->numAxes + sizeof(Time))
+				   * valuator->numMotionEvents);
+    local->first = 0;
+    local->last	 = 0;
+}
+
+int
+xf86GetMotionEvents(DeviceIntPtr	dev,
+		    xTimecoord		*buff,
+		    unsigned long	start,
+		    unsigned long	stop,
+		    ScreenPtr		pScreen)
+{
+    LocalDevicePtr	local	 = (LocalDevicePtr)dev->public.devicePrivate;
+    ValuatorClassPtr	valuator = dev->valuator;
+    int			num  	 = 0;
+    int			loop	 = local->first;
+    int			size;
+    Time		current;
+    
+    if (!HAS_MOTION_HISTORY(local))
+	return 0;
+
+    size = (sizeof(INT32) * valuator->numAxes + sizeof(Time));
+
+    while (loop != local->last) {
+	current = *(Time*)(((char *)local->motion_history)+loop*size);
+	if (current > stop)
+	    return num;
+	if (current >= start) {
+	    memcpy(((char *)buff)+size*num,
+		   ((char *)local->motion_history)+loop*size, size);
+	    num++;
+	}
+	loop = (loop + 1) % valuator->numMotionEvents;
+    }
+    return num;
+}
+
+LocalDevicePtr
+xf86FirstLocalDevice()
+{
+    return xf86InputDevs;
+}
+
+/* 
+ * Cx     - raw data from touch screen
+ * Sxhigh - scaled highest dimension
+ *          (remember, this is of rows - 1 because of 0 origin)
+ * Sxlow  - scaled lowest dimension
+ * Rxhigh - highest raw value from touch screen calibration
+ * Rxlow  - lowest raw value from touch screen calibration
+ *
+ * This function is the same for X or Y coordinates.
+ * You may have to reverse the high and low values to compensate for
+ * different orgins on the touch screen vs X.
+ */
+
+int
+xf86ScaleAxis(int	Cx,
+	      int	Sxhigh,
+	      int	Sxlow,
+	      int	Rxhigh,
+	      int	Rxlow )
+{
+    int X;
+    int dSx = Sxhigh - Sxlow;
+    int dRx = Rxhigh - Rxlow;
+
+    dSx = Sxhigh - Sxlow;
+    if (dRx) {
+	X = ((dSx * (Cx - Rxlow)) / dRx) + Sxlow;
+    }
+    else {
+	X = 0;
+	ErrorF ("Divide by Zero in xf86ScaleAxis");
+    }
+    
+    if (X > Sxlow)
+	X = Sxlow;
+    if (X < Sxhigh)
+	X = Sxhigh;
+    
+    return (X);
+}
+
+/*
+ * This function checks the given screen against the current screen and
+ * makes changes if appropriate. It should be called from an XInput driver's
+ * ReadInput function before any events are posted, if the device is screen
+ * specific like a touch screen.
+ */
+void
+xf86XInputSetScreen(LocalDevicePtr	local,
+		    int			screen_number,
+		    int			x,
+		    int			y)
+{
+    if ((xf86IsCorePointer(local->dev) || xf86ShareCorePointer(local->dev)) &&
+	(miPointerCurrentScreen() != screenInfo.screens[screen_number])) {
+	miPointerSetNewScreen (screen_number, x, y);
+    }
+}
+
+
+void
+xf86InitValuatorAxisStruct(DeviceIntPtr dev, int axnum, int minval, int maxval,
+			   int resolution, int min_res, int max_res)
+{
+#ifdef XINPUT
+    if (maxval == -1) {
+	if (axnum == 0)
+	    maxval = screenInfo.screens[0]->width - 1;
+	else if (axnum == 1)
+	    maxval = screenInfo.screens[0]->height - 1;
+	/* else? */
+    }
+    InitValuatorAxisStruct(dev, axnum, minval, maxval, resolution, min_res,
+			   max_res);
+#endif
+}
+
+/*
+ * Set the valuator values to be in synch with dix/event.c
+ * DefineInitialRootWindow().
+ */
+void
+xf86InitValuatorDefaults(DeviceIntPtr dev, int axnum)
+{
+#ifdef XINPUT
+    if (axnum == 0)
+	dev->valuator->axisVal[0] = screenInfo.screens[0]->width / 2;
+    else if (axnum == 1)
+	dev->valuator->axisVal[1] = screenInfo.screens[0]->height / 2;
+#endif
+}
+
+/* end of xf86Xinput.c */