include/mscvpdb.h: Use flexible array members for the rest of structures.

[wine.git] / dlls / winex11.drv / wintab.c

/*
 * X11 tablet driver
 *
 * Copyright 2003 CodeWeavers (Aric Stewart)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#if 0
#pragma makedep unix
#endif

#include "config.h"

#include <stdlib.h>
#include <stdarg.h>
#include <math.h>
#include <dlfcn.h>

#include "windef.h"
#include "winbase.h"
#include "x11drv.h"
#include "wine/debug.h"
#include "wintab.h"

WINE_DEFAULT_DEBUG_CHANNEL(wintab32);

#define WT_MAX_NAME_LEN 256

typedef struct tagWTI_CURSORS_INFO
{
    WCHAR   NAME[WT_MAX_NAME_LEN];
        /* a displayable zero-terminated string containing the name of the
         * cursor.
         */
    BOOL    ACTIVE;
        /* whether the cursor is currently connected. */
    WTPKT   PKTDATA;
        /* a bit mask indicating the packet data items supported when this
         * cursor is connected.
         */
    BYTE    BUTTONS;
        /* the number of buttons on this cursor. */
    BYTE    BUTTONBITS;
        /* the number of bits of raw button data returned by the hardware.*/
    DWORD   cchBTNNAMES;
    WCHAR   *BTNNAMES;
        /* a list of zero-terminated strings containing the names of the
         * cursor's buttons. The number of names in the list is the same as the
         * number of buttons on the cursor. The names are separated by a single
         * zero character; the list is terminated by two zero characters.
         */
    BYTE    BUTTONMAP[32];
        /* a 32 byte array of logical button numbers, one for each physical
         * button.
         */
    BYTE    SYSBTNMAP[32];
        /* a 32 byte array of button action codes, one for each logical
         * button.
         */
    BYTE    NPBUTTON;
        /* the physical button number of the button that is controlled by normal
         * pressure.
         */
    UINT    NPBTNMARKS[2];
        /* an array of two UINTs, specifying the button marks for the normal
         * pressure button. The first UINT contains the release mark; the second
         * contains the press mark.
         */
    UINT    *NPRESPONSE;
        /* an array of UINTs describing the pressure response curve for normal
         * pressure.
         */
    BYTE    TPBUTTON;
        /* the physical button number of the button that is controlled by
         * tangential pressure.
         */
    UINT    TPBTNMARKS[2];
        /* an array of two UINTs, specifying the button marks for the tangential
         * pressure button. The first UINT contains the release mark; the second
         * contains the press mark.
         */
    UINT    *TPRESPONSE;
        /* an array of UINTs describing the pressure response curve for
         * tangential pressure.
         */
    DWORD   PHYSID;
         /* a manufacturer-specific physical identifier for the cursor. This
          * value will distinguish the physical cursor from others on the same
          * device. This physical identifier allows applications to bind
          * functions to specific physical cursors, even if category numbers
          * change and multiple, otherwise identical, physical cursors are
          * present.
          */
    UINT    MODE;
        /* the cursor mode number of this cursor type, if this cursor type has
         * the CRC_MULTIMODE capability.
         */
    UINT    MINPKTDATA;
        /* the minimum set of data available from a physical cursor in this
         * cursor type, if this cursor type has the CRC_AGGREGATE capability.
         */
    UINT    MINBUTTONS;
        /* the minimum number of buttons of physical cursors in the cursor type,
         * if this cursor type has the CRC_AGGREGATE capability.
         */
    UINT    CAPABILITIES;
        /* flags indicating cursor capabilities, as defined below:
            CRC_MULTIMODE
                Indicates this cursor type describes one of several modes of a
                single physical cursor. Consecutive cursor type categories
                describe the modes; the CSR_MODE data item gives the mode number
                of each cursor type.
            CRC_AGGREGATE
                Indicates this cursor type describes several physical cursors
                that cannot be distinguished by software.
            CRC_INVERT
                Indicates this cursor type describes the physical cursor in its
                inverted orientation; the previous consecutive cursor type
                category describes the normal orientation.
         */
    UINT    TYPE;
        /* Manufacturer Unique id for the item type */
} WTI_CURSORS_INFO, *LPWTI_CURSORS_INFO;


typedef struct tagWTI_DEVICES_INFO
{
    WCHAR   NAME[WT_MAX_NAME_LEN];
        /* a displayable null- terminated string describing the device,
         * manufacturer, and revision level.
         */
    UINT    HARDWARE;
        /* flags indicating hardware and driver capabilities, as defined
         * below:
            HWC_INTEGRATED:
                Indicates that the display and digitizer share the same surface.
            HWC_TOUCH
                Indicates that the cursor must be in physical contact with the
                device to report position.
            HWC_HARDPROX
                Indicates that device can generate events when the cursor is
                entering and leaving the physical detection range.
            HWC_PHYSID_CURSORS
                Indicates that device can uniquely identify the active cursor in
                hardware.
         */
    UINT    NCSRTYPES;
        /* the number of supported cursor types.*/
    UINT    FIRSTCSR;
        /* the first cursor type number for the device. */
    UINT    PKTRATE;
        /* the maximum packet report rate in Hertz. */
    WTPKT   PKTDATA;
        /* a bit mask indicating which packet data items are always available.*/
    WTPKT   PKTMODE;
        /* a bit mask indicating which packet data items are physically
         * relative, i.e., items for which the hardware can only report change,
         * not absolute measurement.
         */
    WTPKT   CSRDATA;
        /* a bit mask indicating which packet data items are only available when
         * certain cursors are connected. The individual cursor descriptions
         * must be consulted to determine which cursors return which data.
         */
    INT     XMARGIN;
    INT     YMARGIN;
    INT     ZMARGIN;
        /* the size of tablet context margins in tablet native coordinates, in
         * the x, y, and z directions, respectively.
         */
    AXIS    X;
    AXIS    Y;
    AXIS    Z;
        /* the tablet's range and resolution capabilities, in the x, y, and z
         * axes, respectively.
         */
    AXIS    NPRESSURE;
    AXIS    TPRESSURE;
        /* the tablet's range and resolution capabilities, for the normal and
         * tangential pressure inputs, respectively.
         */
    AXIS    ORIENTATION[3];
        /* a 3-element array describing the tablet's orientation range and
         * resolution capabilities.
         */
    AXIS    ROTATION[3];
        /* a 3-element array describing the tablet's rotation range and
         * resolution capabilities.
         */
    WCHAR   PNPID[WT_MAX_NAME_LEN];
        /* a null-terminated string containing the devices Plug and Play ID.*/
}   WTI_DEVICES_INFO, *LPWTI_DEVICES_INFO;


/***********************************************************************
 * WACOM WINTAB EXTENSIONS TO SUPPORT CSR_TYPE
 *   In Wintab 1.2, a CSR_TYPE feature was added.  This adds the
 *   ability to return a type of cursor on a tablet.
 *   Unfortunately, we cannot get the cursor type directly from X,
 *   and it is not specified directly anywhere.  So we virtualize
 *   the type here.  (This is unfortunate, the kernel module has
 *   the exact type, but we have no way of getting that module to
 *   pass us that type).
 *
 *   Reference linuxwacom driver project wcmCommon.c function
 *   idtotype for a much larger list of CSR_TYPE.
 *
 *   http://linuxwacom.cvs.sourceforge.net/linuxwacom/linuxwacom-prod/src/xdrv/wcmCommon.c?view=markup
 *
 *   The WTI_CURSORS_INFO.TYPE data is supposed to be used like this:
 *   (cursor.TYPE & 0x0F06) == target_cursor_type
 *   Reference: Section Unique ID
 *   http://www.wacomeng.com/devsupport/ibmpc/gddevpc.html
 */
#define CSR_TYPE_PEN        0x822
#define CSR_TYPE_ERASER     0x82a
#define CSR_TYPE_MOUSE_2D   0x007
#define CSR_TYPE_MOUSE_4D   0x094
/* CSR_TYPE_OTHER is a special value! assumed no real world significance
 * if a stylus type or eraser type eventually have this value
 * it'll be a bug.  As of 2008 05 21 we can be sure because
 * linux wacom lists all the known values and this isn't one of them */
#define CSR_TYPE_OTHER      0x000

typedef struct tagWTPACKET {
        HCTX pkContext;
        UINT pkStatus;
        LONG pkTime;
        WTPKT pkChanged;
        UINT pkSerialNumber;
        UINT pkCursor;
        DWORD pkButtons;
        DWORD pkX;
        DWORD pkY;
        DWORD pkZ;
        UINT pkNormalPressure;
        UINT pkTangentPressure;
        ORIENTATION pkOrientation;
        ROTATION pkRotation; /* 1.1 */
} WTPACKET, *LPWTPACKET;


#ifdef SONAME_LIBXI

#include <X11/Xlib.h>
#include <X11/extensions/XInput.h>

static int           motion_type;
static int           button_press_type;
static int           button_release_type;
static int           key_press_type;
static int           key_release_type;
static int           proximity_in_type;
static int           proximity_out_type;

static HWND          hwndTabletDefault;
static WTPACKET      gMsgPacket;
static DWORD         gSerial;
static WTPACKET      last_packet;

/* Reference: http://www.wacomeng.com/devsupport/ibmpc/gddevpc.html
 *
 * Cursors come in sets of 3 normally
 * Cursor #0 = puck   device 1
 * Cursor #1 = stylus device 1
 * Cursor #2 = eraser device 1
 * Cursor #3 = puck   device 2
 * Cursor #4 = stylus device 2
 * Cursor #5 = eraser device 2
 * etc....
 *
 * A dual tracking/multimode tablet is one
 * that supports 2 independent cursors of the same or
 * different types simultaneously on a single tablet.
 * This makes our cursor layout potentially like this
 * Cursor #0 = puck   1 device 1
 * Cursor #1 = stylus 1 device 1
 * Cursor #2 = eraser 1 device 1
 * Cursor #3 = puck   2 device 1
 * Cursor #4 = stylus 2 device 1
 * Cursor #5 = eraser 2 device 1
 * Cursor #6 = puck   1 device 2
 * etc.....
 *
 * So with multimode tablets we could potentially need
 * 2 slots of the same type per tablet i.e.
 * you are using 2 styluses at once so they would
 * get placed in Cursors #1 and Cursor #4
 *
 * Now say someone has 2 multimode tablets with 2 erasers each
 * now we would need Cursor #2, #5, #8, #11
 * So to support that we need CURSORMAX of 12 (0 to 11)
 * FIXME: we don't support more than 4 regular tablets or 2 multimode tablets */
#define             CURSORMAX 12
static INT           button_state[CURSORMAX];

static LOGCONTEXTW      gSysContext;
static WTI_DEVICES_INFO gSysDevice;
static WTI_CURSORS_INFO gSysCursor[CURSORMAX];
static INT              gNumCursors; /* do NOT use this to iterate through gSysCursor slots */


/* XInput stuff */
static void *xinput_handle;

#define MAKE_FUNCPTR(f) static typeof(f) * p##f;
MAKE_FUNCPTR(XListInputDevices)
MAKE_FUNCPTR(XFreeDeviceList)
MAKE_FUNCPTR(XOpenDevice)
MAKE_FUNCPTR(XQueryDeviceState)
MAKE_FUNCPTR(XGetDeviceButtonMapping)
MAKE_FUNCPTR(XCloseDevice)
MAKE_FUNCPTR(XSelectExtensionEvent)
MAKE_FUNCPTR(XFreeDeviceState)
#undef MAKE_FUNCPTR

static INT X11DRV_XInput_Init(void)
{
    xinput_handle = dlopen(SONAME_LIBXI, RTLD_NOW);
    if (xinput_handle)
    {
#define LOAD_FUNCPTR(f) if((p##f = dlsym(xinput_handle, #f)) == NULL) goto sym_not_found
        LOAD_FUNCPTR(XListInputDevices);
        LOAD_FUNCPTR(XFreeDeviceList);
        LOAD_FUNCPTR(XOpenDevice);
        LOAD_FUNCPTR(XGetDeviceButtonMapping);
        LOAD_FUNCPTR(XCloseDevice);
        LOAD_FUNCPTR(XSelectExtensionEvent);
        LOAD_FUNCPTR(XQueryDeviceState);
        LOAD_FUNCPTR(XFreeDeviceState);
#undef LOAD_FUNCPTR
        return 1;
    }
sym_not_found:
    return 0;
}

static int Tablet_ErrorHandler(Display *dpy, XErrorEvent *event, void* arg)
{
    return 1;
}

static void trace_axes(XValuatorInfoPtr val)
{
    int i;
    XAxisInfoPtr axis;

    for (i = 0, axis = val->axes ; i < val->num_axes; i++, axis++)
        TRACE("        Axis %d: [resolution %d|min_value %d|max_value %d]\n", i, axis->resolution, axis->min_value, axis->max_value);
}

static BOOL match_token(const char *haystack, const char *needle)
{
    const char *p, *q;
    for (p = haystack; *p; )
    {
        while (*p && isspace(*p))
            p++;
        if (! *p)
            break;

        for (q = needle; *q && *p && tolower(*p) == tolower(*q); q++)
            p++;
        if (! *q && (isspace(*p) || *p == ':' || !*p))
            return TRUE;

        while (*p && ! isspace(*p))
            p++;
    }
    return FALSE;
}

/*    Determining if an X device is a Tablet style device is an imperfect science.
**  We rely on common conventions around device names as well as the type reported
**  by Wacom tablets.  This code will likely need to be expanded for alternate tablet types
**
**    Wintab refers to any device that interacts with the tablet as a cursor,
**  (stylus, eraser, tablet mouse, airbrush, etc)
**  this is not to be confused with wacom x11 configuration "cursor" device.
**  Wacoms x11 config "cursor" refers to its device slot (which we mirror with
**  our gSysCursors) for puck like devices (tablet mice essentially).
*/

static BOOL is_tablet_cursor(const char *name, const char *type)
{
    int i;
    static const char *tablet_cursor_allowlist[] = {
        "wacom",
        "wizardpen",
        "acecad",
        "tablet",
        "cursor",
        "stylus",
        "eraser",
        "pad",
        NULL
    };

    for (i=0; tablet_cursor_allowlist[i] != NULL; i++) {
        if (name && match_token(name, tablet_cursor_allowlist[i]))
            return TRUE;
        if (type && match_token(type, tablet_cursor_allowlist[i]))
            return TRUE;
    }
    return FALSE;
}

static UINT get_cursor_type(const char *name, const char *type)
{
    int i;
    static const char* tablet_stylus_allowlist[] = {
        "stylus",
        "wizardpen",
        "acecad",
        "pen",
        NULL
    };

    /* First check device type to avoid cases where name is "Pen and Eraser" and type is "ERASER" */
    for (i=0; tablet_stylus_allowlist[i] != NULL; i++) {
        if (type && match_token(type, tablet_stylus_allowlist[i]))
            return CSR_TYPE_PEN;
    }
    if (type && match_token(type, "eraser"))
        return CSR_TYPE_ERASER;
    for (i=0; tablet_stylus_allowlist[i] != NULL; i++) {
        if (name && match_token(name, tablet_stylus_allowlist[i]))
            return CSR_TYPE_PEN;
    }
    if (name && match_token(name, "eraser"))
        return CSR_TYPE_ERASER;

    return CSR_TYPE_OTHER;
}

/* cursors are placed in gSysCursor rows depending on their type
 * see CURSORMAX comments for more detail */
static BOOL add_system_cursor(LPWTI_CURSORS_INFO cursor)
{
    UINT offset = 0;

    if (cursor->TYPE == CSR_TYPE_PEN)
        offset = 1;
    else if (cursor->TYPE == CSR_TYPE_ERASER)
        offset = 2;

    for (; offset < CURSORMAX; offset += 3)
    {
        if (!gSysCursor[offset].ACTIVE)
        {
            gSysCursor[offset] = *cursor;
            ++gNumCursors;
            return TRUE;
        }
    }

    return FALSE;
}

static void disable_system_cursors(void)
{
    UINT i;

    for (i = 0; i < CURSORMAX; ++i)
    {
        gSysCursor[i].ACTIVE = 0;
    }

    gNumCursors = 0;
}


/***********************************************************************
 *           x11drv_tablet_load_info
 */
NTSTATUS x11drv_tablet_load_info( void *hwnd )
{
    static const WCHAR SZ_CONTEXT_NAME[] = {'W','i','n','e',' ','T','a','b','l','e','t',' ','C','o','n','t','e','x','t',0};
    static const WCHAR SZ_DEVICE_NAME[] = {'W','i','n','e',' ','T','a','b','l','e','t',' ','D','e','v','i','c','e',0};
    static const WCHAR SZ_NON_PLUG_N_PLAY[] = {'n','o','n','-','p','l','u','g','-','n','-','p','l','a','y',0};

    struct x11drv_thread_data *data = x11drv_init_thread_data();
    int num_devices;
    int loop;
    XDeviceInfo *devices;
    XDeviceInfo *target = NULL;
    BOOL    axis_read_complete= FALSE;

    XAnyClassPtr        any;
    XButtonInfoPtr      Button;
    XValuatorInfoPtr    Val;
    XAxisInfoPtr        Axis;

    XDevice *opendevice;

    if (!X11DRV_XInput_Init())
    {
        ERR("Unable to initialize the XInput library.\n");
        return FALSE;
    }

    hwndTabletDefault = hwnd;

    /* Do base initialization */
    wcscpy(gSysContext.lcName, SZ_CONTEXT_NAME);
    wcscpy(gSysDevice.NAME, SZ_DEVICE_NAME);

    gSysContext.lcOptions = CXO_SYSTEM;
    gSysContext.lcLocks = CXL_INSIZE | CXL_INASPECT | CXL_MARGIN |
                               CXL_SENSITIVITY | CXL_SYSOUT;

    gSysContext.lcMsgBase= WT_DEFBASE;
    gSysContext.lcDevice = 0;
    gSysContext.lcPktData =
        PK_CONTEXT | PK_STATUS | PK_SERIAL_NUMBER| PK_TIME | PK_CURSOR |
        PK_BUTTONS |  PK_X | PK_Y | PK_NORMAL_PRESSURE | PK_ORIENTATION;
    gSysContext.lcMoveMask=
        PK_BUTTONS |  PK_X | PK_Y | PK_NORMAL_PRESSURE | PK_ORIENTATION;
    gSysContext.lcStatus = CXS_ONTOP;
    gSysContext.lcPktRate = 100;
    gSysContext.lcBtnDnMask = 0xffffffff;
    gSysContext.lcBtnUpMask = 0xffffffff;
    gSysContext.lcSensX = 65536;
    gSysContext.lcSensY = 65536;
    gSysContext.lcSensX = 65536;
    gSysContext.lcSensZ = 65536;
    gSysContext.lcSysSensX= 65536;
    gSysContext.lcSysSensY= 65536;
    gSysContext.lcSysExtX = NtUserGetSystemMetrics( SM_CXVIRTUALSCREEN );
    gSysContext.lcSysExtY = NtUserGetSystemMetrics( SM_CYVIRTUALSCREEN );

    /* initialize cursors */
    disable_system_cursors();

    /* Device Defaults */
    gSysDevice.HARDWARE = HWC_HARDPROX|HWC_PHYSID_CURSORS;
    gSysDevice.FIRSTCSR= 0;
    gSysDevice.PKTRATE = 100;
    gSysDevice.PKTDATA =
        PK_CONTEXT | PK_STATUS | PK_SERIAL_NUMBER| PK_TIME | PK_CURSOR |
        PK_BUTTONS |  PK_X | PK_Y | PK_NORMAL_PRESSURE | PK_ORIENTATION;
    wcscpy(gSysDevice.PNPID, SZ_NON_PLUG_N_PLAY);

    devices = pXListInputDevices(data->display, &num_devices);
    if (!devices)
    {
        WARN("XInput Extensions reported as not available\n");
        return FALSE;
    }
    TRACE("XListInputDevices reports %d devices\n", num_devices);
    for (loop=0; loop < num_devices; loop++)
    {
        int class_loop;
        char *device_type = devices[loop].type ? XGetAtomName(data->display, devices[loop].type) : NULL;
        WTI_CURSORS_INFO cursor;

        TRACE("Device %i:  [id %d|name %s|type %s|num_classes %d|use %d]\n",
                loop, (int) devices[loop].id, devices[loop].name, debugstr_a(device_type),
                devices[loop].num_classes, devices[loop].use );

        switch (devices[loop].use)
        {
        case IsXExtensionDevice:
#ifdef IsXExtensionPointer
        case IsXExtensionPointer:
#endif
#ifdef IsXExtensionKeyboard
        case IsXExtensionKeyboard:
#endif
            TRACE("Is XExtension: Device, Keyboard, or Pointer\n");
            target = &devices[loop];

            if (strlen(target->name) >= WT_MAX_NAME_LEN)
            {
                ERR("Input device '%s' name too long - skipping\n", wine_dbgstr_a(target->name));
                break;
            }

            X11DRV_expect_error(data->display, Tablet_ErrorHandler, NULL);
            opendevice = pXOpenDevice(data->display,target->id);
            if (!X11DRV_check_error() && opendevice)
            {
                unsigned char map[32];
                int i;
                int shft = 0;

                X11DRV_expect_error(data->display,Tablet_ErrorHandler,NULL);
                cursor.BUTTONS = pXGetDeviceButtonMapping(data->display, opendevice, map, 32);
                if (X11DRV_check_error() || cursor.BUTTONS <= 0)
                {
                    TRACE("No buttons, Non Tablet Device\n");
                    pXCloseDevice(data->display, opendevice);
                    break;
                }

                for (i=0; i< cursor.BUTTONS; i++,shft++)
                {
                    cursor.BUTTONMAP[i] = map[i];
                    cursor.SYSBTNMAP[i] = (1<<shft);
                }
                pXCloseDevice(data->display, opendevice);
            }
            else
            {
                WARN("Unable to open device %s\n",target->name);
                break;
            }
            ntdll_umbstowcs(target->name, strlen(target->name) + 1, cursor.NAME, WT_MAX_NAME_LEN);

            if (! is_tablet_cursor(target->name, device_type))
            {
                WARN("Skipping device %d [name %s|type %s]; not apparently a tablet cursor type device\n",
                     loop, devices[loop].name, debugstr_a(device_type));
                break;
            }

            cursor.ACTIVE = 1;
            cursor.PKTDATA = PK_TIME | PK_CURSOR | PK_BUTTONS |  PK_X | PK_Y |
                              PK_NORMAL_PRESSURE | PK_TANGENT_PRESSURE |
                              PK_ORIENTATION;

            cursor.PHYSID = target->id;
            cursor.NPBUTTON = 1;
            cursor.NPBTNMARKS[0] = 0 ;
            cursor.NPBTNMARKS[1] = 1 ;
            cursor.CAPABILITIES = CRC_MULTIMODE;

            cursor.TYPE = get_cursor_type(target->name, device_type);

            any = target->inputclassinfo;

            for (class_loop = 0; class_loop < target->num_classes; class_loop++)
            {
                switch (any->class)
                {

                    case ValuatorClass:
                        Val = (XValuatorInfoPtr) any;
                        TRACE("    ValidatorInput %d: [class %d|length %d|num_axes %d|mode %d|motion_buffer %ld]\n",
                                class_loop, (int) Val->class, Val->length, Val->num_axes, Val->mode, Val->motion_buffer);
                        if (TRACE_ON(wintab32))
                            trace_axes(Val);

                        /* FIXME:  This is imperfect; we compute our devices capabilities based upon the
                        **         first pen type device we find.  However, a more correct implementation
                        **         would require acquiring a wide variety of tablets and running through
                        **         the various inputs to see what the values are.  Odds are that a
                        **         more 'correct' algorithm would condense to this one anyway.
                        */
                        if (!axis_read_complete && cursor.TYPE == CSR_TYPE_PEN)
                        {
                            Axis = (XAxisInfoPtr) ((char *) Val + sizeof
                                (XValuatorInfo));

                            if (Val->num_axes>=1)
                            {
                                /* Axis 1 is X */
                                gSysDevice.X.axMin = Axis->min_value;
                                gSysDevice.X.axMax= Axis->max_value;
                                gSysDevice.X.axUnits = TU_INCHES;
                                gSysDevice.X.axResolution = Axis->resolution;
                                gSysContext.lcInOrgX = Axis->min_value;
                                gSysContext.lcOutOrgX = Axis->min_value;
                                gSysContext.lcInExtX = Axis->max_value;
                                gSysContext.lcOutExtX = Axis->max_value;
                                Axis++;
                            }
                            if (Val->num_axes>=2)
                            {
                                /* Axis 2 is Y */
                                gSysDevice.Y.axMin = Axis->min_value;
                                gSysDevice.Y.axMax= Axis->max_value;
                                gSysDevice.Y.axUnits = TU_INCHES;
                                gSysDevice.Y.axResolution = Axis->resolution;
                                gSysContext.lcInOrgY = Axis->min_value;
                                gSysContext.lcOutOrgY = Axis->min_value;
                                gSysContext.lcInExtY = Axis->max_value;
                                gSysContext.lcOutExtY = Axis->max_value;
                                Axis++;
                            }
                            if (Val->num_axes>=3)
                            {
                                /* Axis 3 is Normal Pressure */
                                gSysDevice.NPRESSURE.axMin = Axis->min_value;
                                gSysDevice.NPRESSURE.axMax= Axis->max_value;
                                gSysDevice.NPRESSURE.axUnits = TU_INCHES;
                                gSysDevice.NPRESSURE.axResolution =
                                                        Axis->resolution;
                                Axis++;
                            }
                            if (Val->num_axes >= 5)
                            {
                                /* Axis 4 and 5 are X and Y tilt */
                                XAxisInfoPtr        XAxis = Axis;
                                Axis++;
                                if (max (abs(Axis->max_value),
                                         abs(XAxis->max_value)))
                                {
                                    gSysDevice.ORIENTATION[0].axMin = 0;
                                    gSysDevice.ORIENTATION[0].axMax = 3600;
                                    gSysDevice.ORIENTATION[0].axUnits = TU_CIRCLE;
                                    gSysDevice.ORIENTATION[0].axResolution
                                                                = CASTFIX32(3600);
                                    gSysDevice.ORIENTATION[1].axMin = -1000;
                                    gSysDevice.ORIENTATION[1].axMax = 1000;
                                    gSysDevice.ORIENTATION[1].axUnits = TU_CIRCLE;
                                    gSysDevice.ORIENTATION[1].axResolution
                                                                = CASTFIX32(3600);
                                    gSysDevice.ORIENTATION[2].axMin = 0;
                                    gSysDevice.ORIENTATION[2].axMax = 3600;
                                    gSysDevice.ORIENTATION[2].axUnits = TU_CIRCLE;
                                    gSysDevice.ORIENTATION[2].axResolution
                                                                = CASTFIX32(3600);
                                    Axis++;
                                }
                            }
                            axis_read_complete = TRUE;
                        }
                        break;
                    case ButtonClass:
                    {
                        int cchBuf = 512;
                        int cchPos = 0;
                        int i;

                        Button = (XButtonInfoPtr) any;
                        TRACE("    ButtonInput %d: [class %d|length %d|num_buttons %d]\n",
                                class_loop, (int) Button->class, Button->length, Button->num_buttons);
                        cursor.BTNNAMES = malloc( sizeof(WCHAR) * cchBuf );
                        for (i = 0; i < cursor.BUTTONS; i++)
                        {
                            /* FIXME - these names are probably incorrect */
                            int cch = wcslen(cursor.NAME) + 1;
                            while (cch > cchBuf - cchPos - 1) /* we want one extra byte for the last NUL */
                            {
                                cchBuf *= 2;
                                cursor.BTNNAMES = realloc( cursor.BTNNAMES, sizeof(WCHAR) * cchBuf );
                            }

                            wcscpy(cursor.BTNNAMES + cchPos, cursor.NAME);
                            cchPos += cch;
                        }
                        cursor.BTNNAMES[cchPos++] = 0;
                        cursor.BTNNAMES = realloc( cursor.BTNNAMES, sizeof(WCHAR)*cchPos );
                        cursor.cchBTNNAMES = cchPos;
                    }
                    break;
                } /* switch any->class */
                any = (XAnyClassPtr) ((char*) any + any->length);
            } /* for class_loop */
            if (!add_system_cursor(&cursor))
                FIXME("Skipping this cursor due to lack of system cursor slots.\n");
            break;
        } /* switch devices.use */
        XFree(device_type);
    } /* for XListInputDevices */
    pXFreeDeviceList(devices);

    if (!axis_read_complete)
    {
        disable_system_cursors();
        WARN("Did not find a valid stylus, unable to determine system context parameters. Wintab is disabled.\n");
        return FALSE;
    }

    gSysDevice.NCSRTYPES = gNumCursors;
    return TRUE;
}

static int figure_deg(int x, int y)
{
    float angle;

    angle = atan2((float)y, (float)x);
    angle += M_PI_2;
    if (angle <= 0)
        angle += 2 * M_PI;

    return (0.5 + (angle * 1800.0 / M_PI));
}

static int get_button_state(int curnum)
{
    return button_state[curnum];
}

static void set_button_state(int curnum, XID deviceid)
{
    struct x11drv_thread_data *data = x11drv_thread_data();
    XDevice *device;
    XDeviceState *state;
    XInputClass  *class;
    int loop;
    int rc = 0;

    device = pXOpenDevice(data->display,deviceid);
    state = pXQueryDeviceState(data->display,device);

    if (state)
    {
        class = state->data;
        for (loop = 0; loop < state->num_classes; loop++)
        {
            if (class->class == ButtonClass)
            {
                int loop2;
                XButtonState *button_state =  (XButtonState*)class;
                for (loop2 = 0; loop2 < button_state->num_buttons; loop2++)
                {
                    if (button_state->buttons[loop2 / 8] & (1 << (loop2 % 8)))
                    {
                        rc |= (1<<loop2);
                    }
                }
            }
            class = (XInputClass *) ((char *) class + class->length);
        }
    }
    pXFreeDeviceState(state);
    button_state[curnum] = rc;
}

static int cursor_from_device(DWORD deviceid, LPWTI_CURSORS_INFO *cursorp)
{
    int i;
    for (i = 0; i < CURSORMAX; i++)
        if (gSysCursor[i].ACTIVE && gSysCursor[i].PHYSID == deviceid)
        {
            *cursorp = &gSysCursor[i];
            return i;
        }

    ERR("Could not map device id %d to a cursor\n", (int) deviceid);
    return -1;
}

static DWORD get_changed_state( WTPACKET *pkt)
{
    DWORD change = 0;

    if (pkt->pkX != last_packet.pkX)
        change |= PK_X;
    if (pkt->pkY != last_packet.pkY)
        change |= PK_Y;
    if (pkt->pkZ != last_packet.pkZ)
        change |= PK_Z;
    if (pkt->pkSerialNumber != last_packet.pkSerialNumber)
        change |= PK_SERIAL_NUMBER;
    if (pkt->pkTime != last_packet.pkTime)
        change |= PK_TIME;
    if (pkt->pkNormalPressure != last_packet.pkNormalPressure)
        change |= PK_NORMAL_PRESSURE;
    if (pkt->pkTangentPressure != last_packet.pkTangentPressure)
        change |= PK_TANGENT_PRESSURE;
    if (pkt->pkCursor != last_packet.pkCursor)
        change |= PK_CURSOR;
    if (pkt->pkButtons != last_packet.pkButtons)
        change |= PK_BUTTONS;
    if (pkt->pkOrientation.orAzimuth   != last_packet.pkOrientation.orAzimuth  ||
         pkt->pkOrientation.orAltitude != last_packet.pkOrientation.orAltitude ||
         pkt->pkOrientation.orTwist    != last_packet.pkOrientation.orTwist)
        change |= PK_ORIENTATION;
    if (pkt->pkRotation.roPitch != last_packet.pkRotation.roPitch ||
         pkt->pkRotation.roRoll != last_packet.pkRotation.roRoll  ||
         pkt->pkRotation.roYaw  != last_packet.pkRotation.roYaw)
        change |= PK_ROTATION;

    return change;
}

static BOOL motion_event( HWND hwnd, XEvent *event )
{
    XDeviceMotionEvent *motion = (XDeviceMotionEvent *)event;
    LPWTI_CURSORS_INFO cursor;
    int curnum = cursor_from_device(motion->deviceid, &cursor);
    if (curnum < 0)
        return FALSE;

    memset(&gMsgPacket,0,sizeof(WTPACKET));

    TRACE("Received tablet motion event (%p); device id %d, cursor num %d\n",hwnd, (int) motion->deviceid, curnum);

    /* Set cursor to inverted if cursor is the eraser */
    gMsgPacket.pkStatus = (cursor->TYPE  == CSR_TYPE_ERASER ? TPS_INVERT:0);
    gMsgPacket.pkTime = EVENT_x11_time_to_win32_time(motion->time);
    gMsgPacket.pkSerialNumber = gSerial++;
    gMsgPacket.pkCursor = curnum;
    gMsgPacket.pkX = motion->axis_data[0];
    gMsgPacket.pkY = motion->axis_data[1];
    gMsgPacket.pkOrientation.orAzimuth = figure_deg(motion->axis_data[3],motion->axis_data[4]);
    gMsgPacket.pkOrientation.orAltitude = ((1000 - 15 * max
                                            (abs(motion->axis_data[3]),
                                             abs(motion->axis_data[4])))
                                           * (gMsgPacket.pkStatus & TPS_INVERT?-1:1));
    gMsgPacket.pkNormalPressure = motion->axis_data[2];
    gMsgPacket.pkButtons = get_button_state(curnum);
    gMsgPacket.pkChanged = get_changed_state(&gMsgPacket);
    send_message( hwndTabletDefault, WT_PACKET, gMsgPacket.pkSerialNumber, (LPARAM)hwnd );
    last_packet = gMsgPacket;
    return TRUE;
}

static BOOL button_event( HWND hwnd, XEvent *event )
{
    XDeviceButtonEvent *button = (XDeviceButtonEvent *) event;
    LPWTI_CURSORS_INFO cursor;
    int curnum = cursor_from_device(button->deviceid, &cursor);
    if (curnum < 0)
        return FALSE;

    memset(&gMsgPacket,0,sizeof(WTPACKET));

    TRACE("Received tablet button %s event\n", (event->type == button_press_type)?"press":"release");

    /* Set cursor to inverted if cursor is the eraser */
    gMsgPacket.pkStatus = (cursor->TYPE == CSR_TYPE_ERASER ? TPS_INVERT:0);
    set_button_state(curnum, button->deviceid);
    gMsgPacket.pkTime = EVENT_x11_time_to_win32_time(button->time);
    gMsgPacket.pkSerialNumber = gSerial++;
    gMsgPacket.pkCursor = curnum;
    if (button->axes_count > 0) {
        gMsgPacket.pkX = button->axis_data[0];
        gMsgPacket.pkY = button->axis_data[1];
        gMsgPacket.pkOrientation.orAzimuth = figure_deg(button->axis_data[3],button->axis_data[4]);
        gMsgPacket.pkOrientation.orAltitude = ((1000 - 15 * max(abs(button->axis_data[3]),
                                                                abs(button->axis_data[4])))
                                               * (gMsgPacket.pkStatus & TPS_INVERT?-1:1));
        gMsgPacket.pkNormalPressure = button->axis_data[2];
    } else {
        gMsgPacket.pkX = last_packet.pkX;
        gMsgPacket.pkY = last_packet.pkY;
        gMsgPacket.pkOrientation = last_packet.pkOrientation;
        gMsgPacket.pkNormalPressure = last_packet.pkNormalPressure;
    }
    gMsgPacket.pkButtons = get_button_state(curnum);
    gMsgPacket.pkChanged = get_changed_state(&gMsgPacket);
    send_message( hwndTabletDefault, WT_PACKET, gMsgPacket.pkSerialNumber, (LPARAM)hwnd );
    last_packet = gMsgPacket;
    return TRUE;
}

static BOOL key_event( HWND hwnd, XEvent *event )
{
    if (event->type == key_press_type)
        FIXME("Received tablet key press event\n");
    else
        FIXME("Received tablet key release event\n");
    return FALSE;
}

static BOOL proximity_event( HWND hwnd, XEvent *event )
{
    XProximityNotifyEvent *proximity = (XProximityNotifyEvent *) event;
    LPWTI_CURSORS_INFO cursor;
    int curnum = cursor_from_device(proximity->deviceid, &cursor);
    LPARAM proximity_info;

    TRACE("hwnd=%p\n", hwnd);

    if (curnum < 0)
        return FALSE;

    memset(&gMsgPacket,0,sizeof(WTPACKET));

    /* Set cursor to inverted if cursor is the eraser */
    gMsgPacket.pkStatus = (cursor->TYPE == CSR_TYPE_ERASER ? TPS_INVERT:0);
    gMsgPacket.pkStatus |= (event->type==proximity_out_type)?TPS_PROXIMITY:0;
    gMsgPacket.pkTime = EVENT_x11_time_to_win32_time(proximity->time);
    gMsgPacket.pkSerialNumber = gSerial++;
    gMsgPacket.pkCursor = curnum;
    gMsgPacket.pkX = proximity->axis_data[0];
    gMsgPacket.pkY = proximity->axis_data[1];
    gMsgPacket.pkOrientation.orAzimuth = figure_deg(proximity->axis_data[3],proximity->axis_data[4]);
    gMsgPacket.pkOrientation.orAltitude = ((1000 - 15 * max(abs(proximity->axis_data[3]),
                                                            abs(proximity->axis_data[4])))
                                           * (gMsgPacket.pkStatus & TPS_INVERT?-1:1));
    gMsgPacket.pkNormalPressure = proximity->axis_data[2];
    gMsgPacket.pkButtons = get_button_state(curnum);

    /* FIXME: LPARAM loword is true when cursor entering context, false when leaving context
     * This needs to be handled here or in wintab32.  Using the proximity_in_type is not correct
     * but kept for now.
     * LPARAM hiword is "non-zero when the cursor is leaving or entering hardware proximity"
     * WPARAM contains context handle.
     * HWND to HCTX is handled by wintab32.
     */
    proximity_info = MAKELPARAM((event->type == proximity_in_type),
                     (event->type == proximity_in_type) || (event->type == proximity_out_type));
    send_message( hwndTabletDefault, WT_PROXIMITY, (WPARAM)hwnd, proximity_info );
    return TRUE;
}

/***********************************************************************
 *           x11drv_tablet_attach_queue
 */
NTSTATUS x11drv_tablet_attach_queue( void *owner )
{
    struct x11drv_thread_data *data = x11drv_init_thread_data();
    int             num_devices;
    int             loop;
    int             cur_loop;
    XDeviceInfo     *devices;
    XDeviceInfo     *target = NULL;
    XDevice         *the_device;
    XEventClass     event_list[7];
    Window          win = X11DRV_get_whole_window( owner );

    if (!win || !xinput_handle) return 0;

    TRACE("Creating context for window %p (%lx)  %i cursors\n", owner, win, gNumCursors);

    devices = pXListInputDevices(data->display, &num_devices);

    X11DRV_expect_error(data->display,Tablet_ErrorHandler,NULL);
    for (cur_loop=0; cur_loop < CURSORMAX; cur_loop++)
    {
        char   cursorNameA[WT_MAX_NAME_LEN];
        int    event_number=0;

        if (!gSysCursor[cur_loop].ACTIVE) continue;

        /* the cursor name fits in the buffer because too long names are skipped */
        ntdll_wcstoumbs(gSysCursor[cur_loop].NAME, wcslen(gSysCursor[cur_loop].NAME) + 1,
                        cursorNameA, WT_MAX_NAME_LEN, FALSE);
        for (loop=0; loop < num_devices; loop ++)
            if (strcmp(devices[loop].name, cursorNameA) == 0)
                target = &devices[loop];
        if (!target) {
            WARN("Cursor Name %s not found in list of targets.\n", cursorNameA);
            continue;
        }

        TRACE("Opening cursor %i id %i\n",cur_loop,(INT)target->id);

        the_device = pXOpenDevice(data->display, target->id);

        if (!the_device)
        {
            WARN("Unable to Open device\n");
            continue;
        }

        if (the_device->num_classes > 0)
        {
            DeviceKeyPress(the_device, key_press_type, event_list[event_number]);
            if (key_press_type) event_number++;
            DeviceKeyRelease(the_device, key_release_type, event_list[event_number]);
            if (key_release_type) event_number++;
            DeviceButtonPress(the_device, button_press_type, event_list[event_number]);
            if (button_press_type) event_number++;
            DeviceButtonRelease(the_device, button_release_type, event_list[event_number]);
            if (button_release_type) event_number++;
            DeviceMotionNotify(the_device, motion_type, event_list[event_number]);
            if (motion_type) event_number++;
            ProximityIn(the_device, proximity_in_type, event_list[event_number]);
            if (proximity_in_type) event_number++;
            ProximityOut(the_device, proximity_out_type, event_list[event_number]);
            if (proximity_out_type) event_number++;

            if (key_press_type)
                X11DRV_register_event_handler( key_press_type, key_event, "XInput KeyPress" );
            if (key_release_type)
                X11DRV_register_event_handler( key_release_type, key_event, "XInput KeyRelease" );
            if (button_press_type)
                X11DRV_register_event_handler( button_press_type, button_event, "XInput ButtonPress" );
            if (button_release_type)
                X11DRV_register_event_handler( button_release_type, button_event, "XInput ButtonRelease" );
            if (motion_type)
                X11DRV_register_event_handler( motion_type, motion_event, "XInput MotionNotify" );
            if (proximity_in_type)
                X11DRV_register_event_handler( proximity_in_type, proximity_event, "XInput ProximityIn" );
            if (proximity_out_type)
                X11DRV_register_event_handler( proximity_out_type, proximity_event, "XInput ProximityOut" );

            pXSelectExtensionEvent(data->display, win, event_list, event_number);
        }
    }
    XSync(data->display, False);
    X11DRV_check_error();

    if (NULL != devices) pXFreeDeviceList(devices);
    return 0;
}

/***********************************************************************
 *           x11drv_tablet_get_packet
 */
NTSTATUS x11drv_tablet_get_packet( void *packet )
{
    *(WTPACKET *)packet = gMsgPacket;
    return 1;
}


static inline int CopyTabletData(LPVOID target, LPCVOID src, INT size)
{
    /*
     * It is valid to call CopyTabletData with NULL.
     * This handles the WTInfo() case where lpOutput is null.
     */
    if(target != NULL)
        memcpy(target,src,size);
    return(size);
}

/***********************************************************************
 *           x11drv_tablet_info
 */
NTSTATUS x11drv_tablet_info( void *arg )
{
    struct tablet_info_params *params = arg;
    UINT wCategory = params->category;
    UINT nIndex = params->index;
    void *lpOutput = params->output;

    /*
     * It is valid to call WTInfoA with lpOutput == NULL, as per standard.
     * lpOutput == NULL signifies the user only wishes
     * to find the size of the data.
     * NOTE:
     * From now on use CopyTabletData to fill lpOutput. memcpy will break
     * the code.
     */
    int rc = 0;
    LPWTI_CURSORS_INFO  tgtcursor;
    TRACE("(%u, %u, %p)\n", wCategory, nIndex, lpOutput);

    if (!xinput_handle) return 0;

    switch(wCategory)
    {
        case 0:
            /* return largest necessary buffer */
            TRACE("%i cursors\n",gNumCursors);
            if (gNumCursors>0)
            {
                FIXME("Return proper size\n");
                rc = 200;
            }
            break;
        case WTI_INTERFACE:
            switch (nIndex)
            {
                WORD version;
                UINT num;
                case IFC_WINTABID:
                {
                    static const WCHAR driver[] = {'W','i','n','e',' ','W','i','n','t','a','b',' ','1','.','1',0};
                    rc = CopyTabletData(lpOutput, driver, (wcslen(driver) + 1) * sizeof(WCHAR));
                    break;
                }
                case IFC_SPECVERSION:
                    version = (0x01) | (0x01 << 8);
                    rc = CopyTabletData(lpOutput, &version,sizeof(WORD));
                    break;
                case IFC_IMPLVERSION:
                    version = (0x00) | (0x01 << 8);
                    rc = CopyTabletData(lpOutput, &version,sizeof(WORD));
                    break;
                case IFC_NDEVICES:
                    num = 1;
                    rc = CopyTabletData(lpOutput, &num,sizeof(num));
                    break;
                case IFC_NCURSORS:
                    num = gNumCursors;
                    rc = CopyTabletData(lpOutput, &num,sizeof(num));
                    break;
                default:
                    FIXME("WTI_INTERFACE unhandled index %i\n",nIndex);
                    rc = 0;
            }
            break;
        case WTI_DEFSYSCTX:
        case WTI_DDCTXS:
        case WTI_DEFCONTEXT:
            switch (nIndex)
            {
                case 0:
                    /* report 0 if wintab is disabled */
                    if (0 == gNumCursors)
                        rc = 0;
                    else
                        rc = CopyTabletData(lpOutput, &gSysContext,
                                sizeof(LOGCONTEXTW));
                    break;
                case CTX_NAME:
                    rc = CopyTabletData(lpOutput, gSysContext.lcName,
                         (wcslen(gSysContext.lcName)+1) * sizeof(WCHAR));
                    break;
                case CTX_OPTIONS:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcOptions,
                                        sizeof(UINT));
                    break;
                case CTX_STATUS:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcStatus,
                                        sizeof(UINT));
                    break;
                case CTX_LOCKS:
                    rc= CopyTabletData (lpOutput, &gSysContext.lcLocks,
                                        sizeof(UINT));
                    break;
                case CTX_MSGBASE:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcMsgBase,
                                        sizeof(UINT));
                    break;
                case CTX_DEVICE:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcDevice,
                                        sizeof(UINT));
                    break;
                case CTX_PKTRATE:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcPktRate,
                                        sizeof(UINT));
                    break;
                case CTX_PKTDATA:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcPktData,
                                        sizeof(WTPKT));
                    break;
                case CTX_PKTMODE:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcPktMode,
                                        sizeof(WTPKT));
                    break;
                case CTX_MOVEMASK:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcMoveMask,
                                        sizeof(WTPKT));
                    break;
                case CTX_BTNDNMASK:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcBtnDnMask,
                                        sizeof(DWORD));
                    break;
                case CTX_BTNUPMASK:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcBtnUpMask,
                                        sizeof(DWORD));
                    break;
                case CTX_INORGX:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcInOrgX,
                                        sizeof(LONG));
                    break;
                case CTX_INORGY:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcInOrgY,
                                        sizeof(LONG));
                    break;
                case CTX_INORGZ:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcInOrgZ,
                                        sizeof(LONG));
                    break;
                case CTX_INEXTX:
                    rc = CopyTabletData(lpOutput, &gSysContext.lcInExtX,
                                        sizeof(LONG));
                    break;
                case CTX_INEXTY:
                     rc = CopyTabletData(lpOutput, &gSysContext.lcInExtY,
                                        sizeof(LONG));
                    break;
                case CTX_INEXTZ:
                     rc = CopyTabletData(lpOutput, &gSysContext.lcInExtZ,
                                        sizeof(LONG));
                    break;
                case CTX_OUTORGX:
                     rc = CopyTabletData(lpOutput, &gSysContext.lcOutOrgX,
                                        sizeof(LONG));
                    break;
                case CTX_OUTORGY:
                      rc = CopyTabletData(lpOutput, &gSysContext.lcOutOrgY,
                                        sizeof(LONG));
                    break;
                case CTX_OUTORGZ:
                       rc = CopyTabletData(lpOutput, &gSysContext.lcOutOrgZ,
                                        sizeof(LONG));
                    break;
               case CTX_OUTEXTX:
                      rc = CopyTabletData(lpOutput, &gSysContext.lcOutExtX,
                                        sizeof(LONG));
                    break;
                case CTX_OUTEXTY:
                       rc = CopyTabletData(lpOutput, &gSysContext.lcOutExtY,
                                        sizeof(LONG));
                    break;
                case CTX_OUTEXTZ:
                       rc = CopyTabletData(lpOutput, &gSysContext.lcOutExtZ,
                                        sizeof(LONG));
                    break;
                case CTX_SENSX:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSensX,
                                        sizeof(LONG));
                    break;
                case CTX_SENSY:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSensY,
                                        sizeof(LONG));
                    break;
                case CTX_SENSZ:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSensZ,
                                        sizeof(LONG));
                    break;
                case CTX_SYSMODE:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSysMode,
                                        sizeof(LONG));
                    break;
                case CTX_SYSORGX:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSysOrgX,
                                        sizeof(LONG));
                    break;
                case CTX_SYSORGY:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSysOrgY,
                                        sizeof(LONG));
                    break;
                case CTX_SYSEXTX:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSysExtX,
                                        sizeof(LONG));
                    break;
                case CTX_SYSEXTY:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSysExtY,
                                        sizeof(LONG));
                    break;
                case CTX_SYSSENSX:
                        rc = CopyTabletData(lpOutput, &gSysContext.lcSysSensX,
                                        sizeof(LONG));
                    break;
                case CTX_SYSSENSY:
                       rc = CopyTabletData(lpOutput, &gSysContext.lcSysSensY,
                                        sizeof(LONG));
                    break;
                default:
                    FIXME("WTI_DEFSYSCTX unhandled index %i\n",nIndex);
                    rc = 0;
            }
            break;
        case WTI_CURSORS:
        case WTI_CURSORS+1:
        case WTI_CURSORS+2:
        case WTI_CURSORS+3:
        case WTI_CURSORS+4:
        case WTI_CURSORS+5:
        case WTI_CURSORS+6:
        case WTI_CURSORS+7:
        case WTI_CURSORS+8:
        case WTI_CURSORS+9:
        case WTI_CURSORS+10:
        case WTI_CURSORS+11:
        /* CURSORMAX == 12 */
        /* FIXME: dynamic cursor support */
            /* Apps will poll different slots to detect what cursors are available
             * if there isn't a cursor for this slot return 0 */
            if (!gSysCursor[wCategory - WTI_CURSORS].ACTIVE)
                rc = 0;
            else
            {
                tgtcursor = &gSysCursor[wCategory - WTI_CURSORS];
                switch (nIndex)
                {
                    case CSR_NAME:
                        rc = CopyTabletData(lpOutput, tgtcursor->NAME,
                                            (wcslen(tgtcursor->NAME)+1) * sizeof(WCHAR));
                        break;
                    case CSR_ACTIVE:
                        rc = CopyTabletData(lpOutput,&tgtcursor->ACTIVE,
                                            sizeof(BOOL));
                        break;
                    case CSR_PKTDATA:
                        rc = CopyTabletData(lpOutput,&tgtcursor->PKTDATA,
                                            sizeof(WTPKT));
                        break;
                    case CSR_BUTTONS:
                        rc = CopyTabletData(lpOutput,&tgtcursor->BUTTONS,
                                            sizeof(BYTE));
                        break;
                    case CSR_BUTTONBITS:
                        rc = CopyTabletData(lpOutput,&tgtcursor->BUTTONBITS,
                                            sizeof(BYTE));
                        break;
                    case CSR_BTNNAMES:
                        FIXME("Button Names not returned correctly\n");
                        rc = CopyTabletData(lpOutput,&tgtcursor->BTNNAMES,
                                            tgtcursor->cchBTNNAMES*sizeof(WCHAR));
                        break;
                    case CSR_BUTTONMAP:
                        rc = CopyTabletData(lpOutput,tgtcursor->BUTTONMAP,
                                            sizeof(BYTE)*32);
                        break;
                    case CSR_SYSBTNMAP:
                        rc = CopyTabletData(lpOutput,tgtcursor->SYSBTNMAP,
                                            sizeof(BYTE)*32);
                        break;
                    case CSR_NPBTNMARKS:
                        rc = CopyTabletData(lpOutput,tgtcursor->NPBTNMARKS,
                                            sizeof(UINT)*2);
                        break;
                    case CSR_NPBUTTON:
                        rc = CopyTabletData(lpOutput,&tgtcursor->NPBUTTON,
                                            sizeof(BYTE));
                        break;
                    case CSR_NPRESPONSE:
                        FIXME("Not returning CSR_NPRESPONSE correctly\n");
                        rc = 0;
                        break;
                    case CSR_TPBUTTON:
                        rc = CopyTabletData(lpOutput,&tgtcursor->TPBUTTON,
                                            sizeof(BYTE));
                        break;
                    case CSR_TPBTNMARKS:
                        rc = CopyTabletData(lpOutput,tgtcursor->TPBTNMARKS,
                                            sizeof(UINT)*2);
                        break;
                    case CSR_TPRESPONSE:
                        FIXME("Not returning CSR_TPRESPONSE correctly\n");
                        rc = 0;
                        break;
                    case CSR_PHYSID:
                    {
                        DWORD id;
                        id = tgtcursor->PHYSID;
                        rc = CopyTabletData(lpOutput,&id,sizeof(DWORD));
                    }
                        break;
                    case CSR_MODE:
                        rc = CopyTabletData(lpOutput,&tgtcursor->MODE,sizeof(UINT));
                        break;
                    case CSR_MINPKTDATA:
                        rc = CopyTabletData(lpOutput,&tgtcursor->MINPKTDATA,
                            sizeof(UINT));
                        break;
                    case CSR_MINBUTTONS:
                        rc = CopyTabletData(lpOutput,&tgtcursor->MINBUTTONS,
                            sizeof(UINT));
                        break;
                    case CSR_CAPABILITIES:
                        rc = CopyTabletData(lpOutput,&tgtcursor->CAPABILITIES,
                            sizeof(UINT));
                        break;
                    case CSR_TYPE:
                        rc = CopyTabletData(lpOutput,&tgtcursor->TYPE,
                            sizeof(UINT));
                        break;
                    default:
                        FIXME("WTI_CURSORS unhandled index %i\n",nIndex);
                        rc = 0;
                }
            }
            break;
        case WTI_DEVICES:
            switch (nIndex)
            {
                case DVC_NAME:
                    rc = CopyTabletData(lpOutput,gSysDevice.NAME,
                                        (wcslen(gSysDevice.NAME)+1) * sizeof(WCHAR));
                    break;
                case DVC_HARDWARE:
                    rc = CopyTabletData(lpOutput,&gSysDevice.HARDWARE,
                                        sizeof(UINT));
                    break;
                case DVC_NCSRTYPES:
                    rc = CopyTabletData(lpOutput,&gSysDevice.NCSRTYPES,
                                        sizeof(UINT));
                    break;
                case DVC_FIRSTCSR:
                    rc = CopyTabletData(lpOutput,&gSysDevice.FIRSTCSR,
                                        sizeof(UINT));
                    break;
                case DVC_PKTRATE:
                    rc = CopyTabletData(lpOutput,&gSysDevice.PKTRATE,
                                        sizeof(UINT));
                    break;
                case DVC_PKTDATA:
                    rc = CopyTabletData(lpOutput,&gSysDevice.PKTDATA,
                                        sizeof(WTPKT));
                    break;
                case DVC_PKTMODE:
                    rc = CopyTabletData(lpOutput,&gSysDevice.PKTMODE,
                                        sizeof(WTPKT));
                    break;
                case DVC_CSRDATA:
                    rc = CopyTabletData(lpOutput,&gSysDevice.CSRDATA,
                                        sizeof(WTPKT));
                    break;
                case DVC_XMARGIN:
                    rc = CopyTabletData(lpOutput,&gSysDevice.XMARGIN,
                                        sizeof(INT));
                    break;
                case DVC_YMARGIN:
                    rc = CopyTabletData(lpOutput,&gSysDevice.YMARGIN,
                                        sizeof(INT));
                    break;
                case DVC_ZMARGIN:
                    rc = 0; /* unsupported */
                    /*
                    rc = CopyTabletData(lpOutput,&gSysDevice.ZMARGIN,
                                        sizeof(INT));
                    */
                    break;
                case DVC_X:
                    rc = CopyTabletData(lpOutput,&gSysDevice.X,
                                        sizeof(AXIS));
                    break;
                case DVC_Y:
                    rc = CopyTabletData(lpOutput,&gSysDevice.Y,
                                        sizeof(AXIS));
                    break;
                case DVC_Z:
                    rc = 0; /* unsupported */
                    /*
                    rc = CopyTabletData(lpOutput,&gSysDevice.Z,
                                        sizeof(AXIS));
                    */
                    break;
                case DVC_NPRESSURE:
                    rc = CopyTabletData(lpOutput,&gSysDevice.NPRESSURE,
                                        sizeof(AXIS));
                    break;
                case DVC_TPRESSURE:
                    rc = 0; /* unsupported */
                    /*
                    rc = CopyTabletData(lpOutput,&gSysDevice.TPRESSURE,
                                        sizeof(AXIS));
                    */
                    break;
                case DVC_ORIENTATION:
                    rc = CopyTabletData(lpOutput,gSysDevice.ORIENTATION,
                                        sizeof(AXIS)*3);
                    break;
                case DVC_ROTATION:
                    rc = 0; /* unsupported */
                    /*
                    rc = CopyTabletData(lpOutput,&gSysDevice.ROTATION,
                                        sizeof(AXIS)*3);
                    */
                    break;
                case DVC_PNPID:
                    rc = CopyTabletData(lpOutput,gSysDevice.PNPID,
                                        (wcslen(gSysDevice.PNPID)+1)*sizeof(WCHAR));
                    break;
                default:
                    FIXME("WTI_DEVICES unhandled index %i\n",nIndex);
                    rc = 0;
            }
            break;
        default:
            FIXME("Unhandled Category %i\n",wCategory);
    }
    return rc;
}

#else /* SONAME_LIBXI */

/***********************************************************************
 *           x11drv_tablet_attach_queue
 */
NTSTATUS x11drv_tablet_attach_queue( void *owner )
{
    return 0;
}

/***********************************************************************
 *           x11drv_tablet_get_packet
 */
NTSTATUS x11drv_tablet_get_packet( void *arg )
{
    return 0;
}

/***********************************************************************
 *           x11drv_tablet_load_info
 */
NTSTATUS x11drv_tablet_load_info( void *arg )
{
    return FALSE;
}

/***********************************************************************
 *           x11drv_tablet_info
 */
NTSTATUS x11drv_tablet_info( void *arg )
{
    return 0;
}

#endif /* SONAME_LIBXI */