[PATCH evdev] Add third button emulation.
Benjamin Tissoires
tissoire at cena.fr
Mon Jan 31 02:48:08 PST 2011
Hi Peter,
Thanks, that seems to be a good feature for touchscreen devices!
I've got one problem: on which tree does this patch applies? (I've tried
against the branch master of xf86-input-evdev):
error: patch failed: src/evdev.c:453
error: src/evdev.c: patch does not apply
error: patch failed: src/evdev.h:214
error: src/evdev.h: patch does not apply
Patch failed at 0001 Add third button emulation.
Cheers,
Benjamin
On 01/31/2011 02:29 AM, Peter Hutterer wrote:
> New properties:
> "Evdev Third Button Emulation" → switch on/off
> "Evdev Third Button Emulation Timeout" → timeout until event is delivered
> "Evdev Third Button Emulation Button" → phys button to be emulated
> "Evdev Third Button Emulation Threshold" → move threshold before emulation
> is cancelled
>
> Signed-off-by: Peter Hutterer<peter.hutterer at who-t.net>
> ---
> I'll probably regret not writing this in a generic driver lib one day but
> given how long this feature has been requested for, it'll never materialize
> otherwise.
>
> include/evdev-properties.h | 9 +
> man/evdev.man | 25 +++
> src/Makefile.am | 1 +
> src/emuThird.c | 384 ++++++++++++++++++++++++++++++++++++++++++++
> src/evdev.c | 16 ++
> src/evdev.h | 23 +++
> 6 files changed, 458 insertions(+), 0 deletions(-)
> create mode 100644 src/emuThird.c
>
> diff --git a/include/evdev-properties.h b/include/evdev-properties.h
> index 7df2876..16f2af7 100644
> --- a/include/evdev-properties.h
> +++ b/include/evdev-properties.h
> @@ -66,4 +66,13 @@
> /* BOOL */
> #define EVDEV_PROP_SWAP_AXES "Evdev Axes Swap"
>
> +/* BOOL */
> +#define EVDEV_PROP_THIRDBUTTON "Evdev Third Button Emulation"
> +/* CARD32 */
> +#define EVDEV_PROP_THIRDBUTTON_TIMEOUT "Evdev Third Button Emulation Timeout"
> +/* CARD8 */
> +#define EVDEV_PROP_THIRDBUTTON_BUTTON "Evdev Third Button Emulation Button"
> +/* CARD32 */
> +#define EVDEV_PROP_THIRDBUTTON_THRESHOLD "Evdev Third Button Emulation Threshold"
> +
> #endif
> diff --git a/man/evdev.man b/man/evdev.man
> index adb3f8d..931e1a1 100644
> --- a/man/evdev.man
> +++ b/man/evdev.man
> @@ -133,6 +133,31 @@ must be pressed before wheel emulation is started. If the
> is released before this timeout, the original button press/release event
> is sent. Default: 200. Property: "Evdev Wheel Emulation Timeout".
> .TP 7
> +.BI "Option \*qEmulateThirdButton\*q \*q" boolean \*q
> +Enable third button emulation. Third button emulation emits a right button
> +event (by default) by pressing and holding the first button. The first
> +button must be held down for the configured timeout and must not move more
> +than the configured threshold for the emulation to activate. Otherwise, the
> +first button event is posted as normal. Default: off. Property: "Evdev
> +Third Button Emulation".
> +.TP 7
> +.BI "Option \*qEmulateThirdButtonTimeout\*q \*q" integer \*q
> +Specifies the timeout in milliseconds between the initial button press and
> +the generation of the emulated button event.
> +Default: 1000. Property: "Evdev Third Button Emulation Timeout".
> +.TP 7
> +.BI "Option \*qEmulateThirdButtonButton\*q \*q" integer \*q
> +Specifies the physical button number to be emitted if third button emulation
> +is triggered.
> +Default: 3. Property: "Evdev Third Button Button".
> +.TP 7
> +.BI "Option \*qEmulateThirdButtonMoveThreshold\*q \*q" integer \*q
> +Specifies the maximum move fuzz in device coordinates for third button
> +emulation. If the device moves by more than this threshold before the third
> +button emulation is triggered, the emulation is cancelled and a first button
> +event is generated as normal.
> +Default: 20. Property: "Evdev Third Button Emulation Threshold".
> +.TP 7
> .BI "Option \*qGrabDevice\*q \*q" boolean \*q
> Force a grab on the event device. Doing so will ensure that no other driver
> can initialise the same device and it will also stop the device from sending
> diff --git a/src/Makefile.am b/src/Makefile.am
> index a5c89ac..d1efe53 100644
> --- a/src/Makefile.am
> +++ b/src/Makefile.am
> @@ -35,6 +35,7 @@ AM_CPPFLAGS =-I$(top_srcdir)/include
> @DRIVER_NAME at _drv_la_SOURCES = @DRIVER_NAME at .c \
> @DRIVER_NAME at .h \
> emuMB.c \
> + emuThird.c \
> emuWheel.c \
> draglock.c
>
> diff --git a/src/emuThird.c b/src/emuThird.c
> new file mode 100644
> index 0000000..ee430d1
> --- /dev/null
> +++ b/src/emuThird.c
> @@ -0,0 +1,384 @@
> +/*
> + * Copyright © 2011 Red Hat, Inc.
> + *
> + * 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 the authors
> + * not be used in advertising or publicity pertaining to distribution of the
> + * software without specific, written prior permission. The authors make no
> + * representations about the suitability of this software for any
> + * purpose. It is provided "as is" without express or implied
> + * warranty.
> + *
> + * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
> + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
> + * NO EVENT SHALL THE AUTHORS 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.
> + *
> + */
> +
> +/* Right mouse button emulation code.
> + * Emulates a right button event if the first button is held down for a
> + * timeout. If the device moves more than a certain amount before the
> + * timeout is over, the emulation is cancelled and a normal button event is
> + * generated.
> + */
> +
> +#ifdef HAVE_CONFIG_H
> +#include "config.h"
> +#endif
> +
> +#include "evdev.h"
> +
> +#include<X11/Xatom.h>
> +#include<xf86.h>
> +#include<xf86Xinput.h>
> +#include<exevents.h>
> +
> +#include<evdev-properties.h>
> +
> +/* Threshold (in device coordinates) for devices to cancel emulation */
> +#define DEFAULT_MOVE_THRESHOLD 20
> +
> +static Atom prop_3bemu; /* Right button emulation on/off property */
> +static Atom prop_3btimeout; /* Right button timeout property */
> +static Atom prop_3bbutton; /* Right button target physical button */
> +static Atom prop_3bthreshold; /* Right button move cancellation threshold */
> +
> +/* State machine for 3rd button emulation */
> +enum EmulationState {
> + EM3B_OFF, /* no event */
> + EM3B_PENDING, /* timer pending */
> + EM3B_EMULATING /* in emulation */
> +};
> +
> +
> +/**
> + * Timer function. Post a button down event to the server.
> + *
> + * @param arg The InputInfoPtr for this device.
> + */
> +CARD32
> +Evdev3BEmuTimer(OsTimerPtr timer, CARD32 time, pointer arg)
> +{
> + InputInfoPtr pInfo = arg;
> + EvdevPtr pEvdev = pInfo->private;
> + int sigstate;
> +
> + sigstate = xf86BlockSIGIO ();
> + pEvdev->emulate3B.state = EM3B_EMULATING;
> + EvdevPostButtonEvent(pInfo, pEvdev->emulate3B.button, 1);
> + xf86UnblockSIGIO (sigstate);
> + return 0;
> +}
> +
> +
> +/**
> + * Cancel all emulation, reset the timer and reset deltas.
> + */
> +static void
> +Evdev3BCancel(InputInfoPtr pInfo)
> +{
> + EvdevPtr pEvdev = pInfo->private;
> +
> + if (pEvdev->emulate3B.state != EM3B_OFF)
> + {
> + TimerCancel(pEvdev->emulate3B.timer);
> + pEvdev->emulate3B.state = EM3B_OFF;
> + memset(pEvdev->emulate3B.delta, 0, sizeof(pEvdev->emulate3B.delta));
> + }
> +}
> +
> +/**
> + * Emulate a third button on button press. Note that emulation only triggers
> + * on button 1.
> + *
> + * Return TRUE if event was swallowed by middle mouse button emulation,
> + * FALSE otherwise.
> + */
> +BOOL
> +Evdev3BEmuFilterEvent(InputInfoPtr pInfo, int button, BOOL press)
> +{
> + EvdevPtr pEvdev = pInfo->private;
> + int ret = FALSE;
> +
> + if (!pEvdev->emulate3B.enabled)
> + goto out;
> +
> + if (press)
> + pEvdev->emulate3B.buttonstate |= button;
> + else
> + pEvdev->emulate3B.buttonstate&= ~button;
> +
> + /* Any other button pressed? Cancel timer */
> + if (button != 1)
> + {
> + switch (pEvdev->emulate3B.state)
> + {
> + case EM3B_PENDING:
> + Evdev3BCancel(pInfo);
> + EvdevQueueButtonEvent(pInfo, 1, 1);
> + break;
> + case EM3B_EMULATING:
> + /* We're emulating and now the user pressed a different
> + * button. Just release the emulating one, tell the user to
> + * not do that and get on with life */
> + Evdev3BCancel(pInfo);
> + EvdevQueueButtonEvent(pInfo, pEvdev->emulate3B.button, 0);
> + break;
> + default:
> + break;
> + }
> + goto out;
> + }
> +
> + /* Don't emulate if any other button is down */
> + if ((pEvdev->emulate3B.buttonstate& ~0x1) != 0)
> + goto out;
> +
> + /* Release event → cancel, send press and release now. */
> + if (!press)
> + {
> + switch(pEvdev->emulate3B.state)
> + {
> + case EM3B_PENDING:
> + Evdev3BCancel(pInfo);
> + EvdevQueueButtonEvent(pInfo, 1, 1);
> + break;
> + case EM3B_EMULATING:
> + Evdev3BCancel(pInfo);
> + EvdevQueueButtonEvent(pInfo, pEvdev->emulate3B.button, 0);
> + ret = TRUE;
> + break;
> + default:
> + break;
> + }
> +
> + goto out;
> + }
> +
> + if (press&& pEvdev->emulate3B.state == EM3B_OFF)
> + {
> + pEvdev->emulate3B.state = EM3B_PENDING;
> + pEvdev->emulate3B.timer = TimerSet(pEvdev->emulate3B.timer,
> + 0, pEvdev->emulate3B.timeout,
> + Evdev3BEmuTimer, pInfo);
> + ret = TRUE;
> + goto out;
> + }
> +
> +out:
> + return ret;
> +}
> +
> +/**
> + * Handle absolute x/y motion. If the motion is above the threshold, cancel
> + * emulation.
> + */
> +void
> +Evdev3BEmuProcessAbsMotion(InputInfoPtr pInfo, ValuatorMask *vals)
> +{
> + EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
> + int cancel = FALSE;
> +
> + if (pEvdev->emulate3B.state != EM3B_PENDING)
> + {
> + if (valuator_mask_isset(vals, 0))
> + pEvdev->emulate3B.startpos[0] = valuator_mask_get(vals, 0);
> + if (valuator_mask_isset(vals, 1))
> + pEvdev->emulate3B.startpos[1] = valuator_mask_get(vals, 1);
> + return;
> + }
> +
> + if (!cancel&& valuator_mask_isset(vals, 0))
> + {
> + int dx = valuator_mask_get(vals, 0) - pEvdev->emulate3B.startpos[0];
> + if (abs(dx)> pEvdev->emulate3B.threshold)
> + cancel = TRUE;
> + }
> +
> + if (!cancel&& valuator_mask_isset(vals, 1))
> + {
> + int dy = valuator_mask_get(vals, 1) - pEvdev->emulate3B.startpos[1];
> + if (abs(dy)> pEvdev->emulate3B.threshold)
> + cancel = TRUE;
> + }
> +
> + if (cancel)
> + {
> + Evdev3BCancel(pInfo);
> + EvdevPostButtonEvent(pInfo, 1, 1);
> + }
> +}
> +
> +/**
> + * Handle relative x/y motion. If the motion is above the threshold, cancel
> + * emulation.
> + */
> +void
> +Evdev3BEmuProcessRelMotion(InputInfoPtr pInfo, int dx, int dy)
> +{
> + EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
> +
> + if (pEvdev->emulate3B.state != EM3B_PENDING)
> +
> + return;
> +
> + pEvdev->emulate3B.delta[0] += dx;
> + pEvdev->emulate3B.delta[1] += dy;
> +
> + if (abs(pEvdev->emulate3B.delta[0])> pEvdev->emulate3B.threshold ||
> + abs(pEvdev->emulate3B.delta[1])> pEvdev->emulate3B.threshold)
> + {
> + Evdev3BCancel(pInfo);
> + EvdevPostButtonEvent(pInfo, 1, 1);
> + }
> +}
> +
> +void
> +Evdev3BEmuPreInit(InputInfoPtr pInfo)
> +{
> + EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
> +
> + pEvdev->emulate3B.enabled = xf86SetBoolOption(pInfo->options,
> + "EmulateThirdButton",
> + FALSE);
> + pEvdev->emulate3B.timeout = xf86SetIntOption(pInfo->options,
> + "EmulateThirdButtonTimeout",
> + 1000);
> + pEvdev->emulate3B.button = xf86SetBoolOption(pInfo->options,
> + "EmulateThirdButtonButton",
> + 3);
> + /* FIXME: this should be auto-configured based on axis ranges */
> + pEvdev->emulate3B.threshold = xf86SetBoolOption(pInfo->options,
> + "EmulateThirdButtonMoveThreshold",
> + DEFAULT_MOVE_THRESHOLD);
> + /* allocate now so we don't allocate in the signal handler */
> + pEvdev->emulate3B.timer = TimerSet(NULL, 0, 0, NULL, NULL);
> +}
> +
> +void
> +Evdev3BEmuOn(InputInfoPtr pInfo)
> +{
> + /* This function just exists for symmetry in evdev.c */
> +}
> +
> +void
> +Evdev3BEmuFinalize(InputInfoPtr pInfo)
> +{
> + EvdevPtr pEvdev = pInfo->private;
> +
> + TimerFree(pEvdev->emulate3B.timer);
> +}
> +
> +static int
> +Evdev3BEmuSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
> + BOOL checkonly)
> +{
> + InputInfoPtr pInfo = dev->public.devicePrivate;
> + EvdevPtr pEvdev = pInfo->private;
> +
> + if (atom == prop_3bemu)
> + {
> + if (val->format != 8 || val->size != 1 || val->type != XA_INTEGER)
> + return BadMatch;
> +
> + if (!checkonly)
> + pEvdev->emulate3B.enabled = *((BOOL*)val->data);
> +
> + } else if (atom == prop_3btimeout)
> + {
> + if (val->format != 32 || val->size != 1 || val->type != XA_INTEGER)
> + return BadMatch;
> +
> + if (!checkonly)
> + pEvdev->emulate3B.timeout = *((CARD32*)val->data);
> +
> + } else if (atom == prop_3bbutton)
> + {
> + if (val->format != 8 || val->size != 1 || val->type != XA_INTEGER)
> + return BadMatch;
> +
> + if (!checkonly)
> + pEvdev->emulate3B.button = *((CARD8*)val->data);
> + } else if (atom == prop_3bthreshold)
> + {
> + if (val->format != 32 || val->size != 1 || val->type != XA_INTEGER)
> + return BadMatch;
> +
> + if (!checkonly)
> + pEvdev->emulate3B.threshold = *((CARD32*)val->data);
> + }
> +
> +
> + return Success;
> +}
> +
> +/**
> + * Initialise properties for third button emulation
> + */
> +void
> +Evdev3BEmuInitProperty(DeviceIntPtr dev)
> +{
> + InputInfoPtr pInfo = dev->public.devicePrivate;
> + EvdevPtr pEvdev = pInfo->private;
> + int rc;
> +
> + if (!dev->button) /* don't init prop for keyboards */
> + return;
> +
> + /* third button emulation on/off */
> + prop_3bemu = MakeAtom(EVDEV_PROP_THIRDBUTTON, strlen(EVDEV_PROP_THIRDBUTTON), TRUE);
> + rc = XIChangeDeviceProperty(dev, prop_3bemu, XA_INTEGER, 8,
> + PropModeReplace, 1,
> +&pEvdev->emulate3B.enabled,
> + FALSE);
> + if (rc != Success)
> + return;
> +
> + XISetDevicePropertyDeletable(dev, prop_3bemu, FALSE);
> +
> + /* third button emulation timeout */
> + prop_3btimeout = MakeAtom(EVDEV_PROP_THIRDBUTTON_TIMEOUT,
> + strlen(EVDEV_PROP_THIRDBUTTON_TIMEOUT),
> + TRUE);
> + rc = XIChangeDeviceProperty(dev, prop_3btimeout, XA_INTEGER, 32, PropModeReplace, 1,
> +&pEvdev->emulate3B.timeout, FALSE);
> +
> + if (rc != Success)
> + return;
> +
> + XISetDevicePropertyDeletable(dev, prop_3btimeout, FALSE);
> +
> + /* third button emulation button to be triggered */
> + prop_3bbutton = MakeAtom(EVDEV_PROP_THIRDBUTTON_BUTTON,
> + strlen(EVDEV_PROP_THIRDBUTTON_BUTTON),
> + TRUE);
> + rc = XIChangeDeviceProperty(dev, prop_3bbutton, XA_INTEGER, 8, PropModeReplace, 1,
> +&pEvdev->emulate3B.button, FALSE);
> +
> + if (rc != Success)
> + return;
> +
> + XISetDevicePropertyDeletable(dev, prop_3bbutton, FALSE);
> +
> + /* third button emulation movement threshold */
> + prop_3bthreshold = MakeAtom(EVDEV_PROP_THIRDBUTTON_THRESHOLD,
> + strlen(EVDEV_PROP_THIRDBUTTON_THRESHOLD),
> + TRUE);
> + rc = XIChangeDeviceProperty(dev, prop_3bthreshold, XA_INTEGER, 32, PropModeReplace, 1,
> +&pEvdev->emulate3B.threshold, FALSE);
> +
> + if (rc != Success)
> + return;
> +
> + XISetDevicePropertyDeletable(dev, prop_3bthreshold, FALSE);
> +
> + XIRegisterPropertyHandler(dev, Evdev3BEmuSetProperty, NULL, NULL);
> +}
> +
> diff --git a/src/evdev.c b/src/evdev.c
> index c6c61b1..6b1886d 100644
> --- a/src/evdev.c
> +++ b/src/evdev.c
> @@ -396,6 +396,11 @@ EvdevProcessValuators(InputInfoPtr pInfo)
> if (pEvdev->invert_y)
> pEvdev->delta[REL_Y] *= -1;
>
> +
> + Evdev3BEmuProcessRelMotion(pInfo,
> + pEvdev->delta[REL_X],
> + pEvdev->delta[REL_Y]);
> +
> for (i = 0; i< REL_CNT; i++)
> {
> int map = pEvdev->axis_map[i];
> @@ -453,6 +458,7 @@ EvdevProcessValuators(InputInfoPtr pInfo)
>
> valuator_mask_set(pEvdev->vals, i, val);
> }
> + Evdev3BEmuProcessAbsMotion(pInfo, pEvdev->vals);
> }
> }
>
> @@ -553,6 +559,9 @@ EvdevProcessButtonEvent(InputInfoPtr pInfo, struct input_event *ev)
> if (EvdevMBEmuFilterEvent(pInfo, button, value))
> return;
>
> + if (Evdev3BEmuFilterEvent(pInfo, button, value))
> + return;
> +
> if (button)
> EvdevQueueButtonEvent(pInfo, button, value);
> else
> @@ -844,6 +853,7 @@ EvdevReadInput(InputInfoPtr pInfo)
> if (errno == ENODEV) /* May happen after resume */
> {
> EvdevMBEmuFinalize(pInfo);
> + Evdev3BEmuFinalize(pInfo);
> xf86RemoveEnabledDevice(pInfo);
> close(pInfo->fd);
> pInfo->fd = -1;
> @@ -1342,6 +1352,7 @@ EvdevInit(DeviceIntPtr device)
> EvdevInitProperty(device);
> XIRegisterPropertyHandler(device, EvdevSetProperty, NULL, NULL);
> EvdevMBEmuInitProperty(device);
> + Evdev3BEmuInitProperty(device);
> EvdevWheelEmuInitProperty(device);
> EvdevDragLockInitProperty(device);
>
> @@ -1370,6 +1381,7 @@ EvdevOn(DeviceIntPtr device)
> xf86FlushInput(pInfo->fd);
> xf86AddEnabledDevice(pInfo);
> EvdevMBEmuOn(pInfo);
> + Evdev3BEmuOn(pInfo);
> pEvdev->flags |= EVDEV_INITIALIZED;
> device->public.on = TRUE;
>
> @@ -1396,7 +1408,10 @@ EvdevProc(DeviceIntPtr device, int what)
>
> case DEVICE_OFF:
> if (pEvdev->flags& EVDEV_INITIALIZED)
> + {
> EvdevMBEmuFinalize(pInfo);
> + Evdev3BEmuFinalize(pInfo);
> + }
> if (pInfo->fd != -1)
> {
> EvdevGrabDevice(pInfo, 0, 1);
> @@ -1874,6 +1889,7 @@ EvdevPreInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags)
> if (pEvdev->flags& EVDEV_BUTTON_EVENTS)
> {
> EvdevMBEmuPreInit(pInfo);
> + Evdev3BEmuPreInit(pInfo);
> EvdevWheelEmuPreInit(pInfo);
> EvdevDragLockPreInit(pInfo);
> }
> diff --git a/src/evdev.h b/src/evdev.h
> index e68f7f2..37a50f3 100644
> --- a/src/evdev.h
> +++ b/src/evdev.h
> @@ -136,6 +136,18 @@ typedef struct {
> Time expires; /* time of expiry */
> Time timeout;
> } emulateMB;
> + /* Third mouse button emulation */
> + struct {
> + BOOL enabled;
> + BOOL state; /* current state */
> + Time timeout; /* timeout until third button press */
> + int buttonstate; /* phys. button state */
> + int button; /* phys button to emit */
> + int threshold; /* move threshold in dev coords */
> + OsTimerPtr timer;
> + int delta[2]; /* delta x/y, accumulating */
> + int startpos[2]; /* starting pos for abs devices */
> + } emulate3B;
> struct {
> int meta; /* meta key to lock any button */
> BOOL meta_state; /* meta_button state */
> @@ -204,6 +216,16 @@ void EvdevMBEmuPreInit(InputInfoPtr);
> void EvdevMBEmuOn(InputInfoPtr);
> void EvdevMBEmuFinalize(InputInfoPtr);
>
> +/* Third button emulation */
> +CARD32 Evdev3BEmuTimer(OsTimerPtr timer, CARD32 time, pointer arg);
> +BOOL Evdev3BEmuFilterEvent(InputInfoPtr, int, BOOL);
> +void Evdev3BEmuPreInit(InputInfoPtr pInfo);
> +void Evdev3BEmuPreInit(InputInfoPtr);
> +void Evdev3BEmuOn(InputInfoPtr);
> +void Evdev3BEmuFinalize(InputInfoPtr);
> +void Evdev3BEmuProcessRelMotion(InputInfoPtr pInfo, int dx, int dy);
> +void Evdev3BEmuProcessAbsMotion(InputInfoPtr pInfo, ValuatorMask *vals);
> +
> /* Mouse Wheel emulation */
> void EvdevWheelEmuPreInit(InputInfoPtr pInfo);
> BOOL EvdevWheelEmuFilterButton(InputInfoPtr pInfo, unsigned int button, int value);
> @@ -214,6 +236,7 @@ void EvdevDragLockPreInit(InputInfoPtr pInfo);
> BOOL EvdevDragLockFilterEvent(InputInfoPtr pInfo, unsigned int button, int value);
>
> void EvdevMBEmuInitProperty(DeviceIntPtr);
> +void Evdev3BEmuInitProperty(DeviceIntPtr);
> void EvdevWheelEmuInitProperty(DeviceIntPtr);
> void EvdevDragLockInitProperty(DeviceIntPtr);
> #endif
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