xserver git update 16 dec 2011

1 files changed, 980 insertions, 982 deletions

diff --git a/xorg-server/xkb/xkbLEDs.c b/xorg-server/xkb/xkbLEDs.c
index 14767157b..24fcd3b48 100644
--- a/xorg-server/xkb/xkbLEDs.c
+++ b/xorg-server/xkb/xkbLEDs.c
@@ -1,982 +1,980 @@
-/************************************************************

-Copyright (c) 1995 by Silicon Graphics Computer Systems, Inc.

-

-Permission to use, copy, modify, and distribute this

-software and its documentation for any purpose and without

-fee is hereby granted, 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 Silicon Graphics not be 

-used in advertising or publicity pertaining to distribution 

-of the software without specific prior written permission.

-Silicon Graphics makes no representation about the suitability 

-of this software for any purpose. It is provided "as is"

-without any express or implied warranty.

-

-SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 

-SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 

-AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON

-GRAPHICS 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.

-

-********************************************************/

-

-#ifdef HAVE_DIX_CONFIG_H

-#include <dix-config.h>

-#endif

-

-#include <stdio.h>

-#include <ctype.h>

-#include <math.h>

-#include <X11/X.h>

-#include <X11/Xproto.h>

-#include "misc.h"

-#include "inputstr.h"

-

-#include <X11/extensions/XI.h>

-#include <xkbsrv.h>

-#include "xkb.h"

-

-/***====================================================================***/

-

-	/*

-	 * unsigned

-	 * XkbIndicatorsToUpdate(dev,changed,check_devs_rtrn)

-	 *

-	 * Given a keyboard and a set of state components that have changed,

-	 * this function returns the indicators on the default keyboard 

-	 * feedback that might be affected.   It also reports whether or not 

-	 * any extension devices might be affected in check_devs_rtrn.

-	 */

-

-unsigned

-XkbIndicatorsToUpdate(	DeviceIntPtr	dev,

-			unsigned long 	state_changes,

-			Bool		enable_changes)

-{

-register unsigned	update=	0;

-XkbSrvLedInfoPtr	sli;

-

-    sli= XkbFindSrvLedInfo(dev,XkbDfltXIClass,XkbDfltXIId,0);

-

-    if (!sli)

-        return update;

-

-    if (state_changes&(XkbModifierStateMask|XkbGroupStateMask))

-	update|= sli->usesEffective;

-    if (state_changes&(XkbModifierBaseMask|XkbGroupBaseMask))

-	update|= sli->usesBase;

-    if (state_changes&(XkbModifierLatchMask|XkbGroupLatchMask))

-	update|= sli->usesLatched;

-    if (state_changes&(XkbModifierLockMask|XkbGroupLockMask))

-	update|= sli->usesLocked;

-    if (state_changes&XkbCompatStateMask)

-	update|= sli->usesCompat;

-    if (enable_changes)

-	update|= sli->usesControls;

-    return update;

-}

-

-/***====================================================================***/

-

-	/*

-	 * Bool

-	 *XkbApplyLEDChangeToKeyboard(xkbi,map,on,change)

-	 *

-	 * Some indicators "drive" the keyboard when their state is explicitly 

-	 * changed, as described in section 9.2.1 of the XKB protocol spec.

-	 * This function updates the state and controls for the keyboard 

-	 * specified by 'xkbi' to reflect any changes that are required 

-	 * when the indicator described by 'map' is turned on or off.  The

-	 * extent of the changes is reported in change, which must be defined.

-	 */

-static Bool

-XkbApplyLEDChangeToKeyboard(	XkbSrvInfoPtr		xkbi,

-				XkbIndicatorMapPtr	map,

-				Bool			on,

-				XkbChangesPtr		change)

-{

-Bool		ctrlChange,stateChange;

-XkbStatePtr	state;

-

-    if ((map->flags&XkbIM_NoExplicit)||((map->flags&XkbIM_LEDDrivesKB)==0))

-	return FALSE;

-    ctrlChange= stateChange= FALSE;

-    if (map->ctrls) {

-	XkbControlsPtr	ctrls= xkbi->desc->ctrls;

-	unsigned 	old;

-

-	old= ctrls->enabled_ctrls;

-	if (on)	ctrls->enabled_ctrls|= map->ctrls;

-	else	ctrls->enabled_ctrls&= ~map->ctrls;

-	if (old!=ctrls->enabled_ctrls) {

-	    change->ctrls.changed_ctrls= XkbControlsEnabledMask;

-	    change->ctrls.enabled_ctrls_changes= old^ctrls->enabled_ctrls;

-	    ctrlChange= TRUE;

-	}

-    }

-    state= &xkbi->state;

-    if ((map->groups)&&((map->which_groups&(~XkbIM_UseBase))!=0)) {

-	register int i;

-	register unsigned bit,match;

-

-	if (on)	match= (map->groups)&XkbAllGroupsMask;

-	else 	match= (~map->groups)&XkbAllGroupsMask;

-	if (map->which_groups&(XkbIM_UseLocked|XkbIM_UseEffective)) {

-	    for (i=0,bit=1;i<XkbNumKbdGroups;i++,bit<<=1) {

-		if (bit&match)

-		    break;

-	    }

-	    if (map->which_groups&XkbIM_UseLatched)

-		XkbLatchGroup(xkbi->device,0); /* unlatch group */

-	    state->locked_group= i;

-	    stateChange= TRUE;

-	}

-	else if (map->which_groups&(XkbIM_UseLatched|XkbIM_UseEffective)) {

-	    for (i=0,bit=1;i<XkbNumKbdGroups;i++,bit<<=1) {

-		if (bit&match)

-		    break;

-	    }

-	    state->locked_group= 0;

-	    XkbLatchGroup(xkbi->device,i);

-	    stateChange= TRUE;

-	}

-    }

-    if ((map->mods.mask)&&((map->which_mods&(~XkbIM_UseBase))!=0)) {

-	if (map->which_mods&(XkbIM_UseLocked|XkbIM_UseEffective)) {

-	    register unsigned long old;

-	    old= state->locked_mods;

-	    if (on)	state->locked_mods|= map->mods.mask;

-	    else	state->locked_mods&= ~map->mods.mask;

-	    if (state->locked_mods!=old)

-		stateChange= TRUE;

-	}

-	if (map->which_mods&(XkbIM_UseLatched|XkbIM_UseEffective)) {

-	    register unsigned long newmods;

-	    newmods= state->latched_mods;

-	    if (on)	newmods|=  map->mods.mask;

-	    else	newmods&= ~map->mods.mask;

-	    if (newmods!=state->locked_mods) {

-		newmods&= map->mods.mask;

-		XkbLatchModifiers(xkbi->device,map->mods.mask,newmods);

-		stateChange= TRUE;

-	    }

-	}

-    }

-    return stateChange || ctrlChange;

-}

-	

-	/*

-	 * Bool

-	 * ComputeAutoState(map,state,ctrls)

-	 *

-	 * This function reports the effect of applying the specified

-	 * indicator map given the specified state and controls, as

-	 * described in section 9.2 of the XKB protocol specification.

-	 */

-

-static Bool

-ComputeAutoState(	XkbIndicatorMapPtr	map,

-			XkbStatePtr 		state,

-			XkbControlsPtr 		ctrls)

-{

-Bool 			on;

-CARD8 			mods,group;

-

-    on= FALSE;

-    mods= group= 0;

-    if (map->which_mods&XkbIM_UseAnyMods) {

-	if (map->which_mods&XkbIM_UseBase)

-	    mods|= state->base_mods;

-	if (map->which_mods&XkbIM_UseLatched)

-	    mods|= state->latched_mods;

-	if (map->which_mods&XkbIM_UseLocked)

-	    mods|= state->locked_mods;

-	if (map->which_mods&XkbIM_UseEffective)

-	    mods|= state->mods;

-	if (map->which_mods&XkbIM_UseCompat)

-	    mods|= state->compat_state;

-	on = ((map->mods.mask&mods)!=0);

-	on = on||((mods==0)&&(map->mods.mask==0)&&(map->mods.vmods==0));

-    }

-    if (map->which_groups&XkbIM_UseAnyGroup) {

-	if (map->which_groups&XkbIM_UseBase)

-	    group|= (1L << state->base_group);

-	if (map->which_groups&XkbIM_UseLatched)

-	    group|= (1L << state->latched_group);

-	if (map->which_groups&XkbIM_UseLocked)

-	    group|= (1L << state->locked_group);

-	if (map->which_groups&XkbIM_UseEffective)

-	    group|= (1L << state->group);

-	on = on||(((map->groups&group)!=0)||(map->groups==0));

-    }

-    if (map->ctrls)

-	on = on||(ctrls->enabled_ctrls&map->ctrls);

-    return on;

-}

-

-

-static void

-XkbUpdateLedAutoState(	DeviceIntPtr			dev,

-			XkbSrvLedInfoPtr		sli,

-			unsigned			maps_to_check,

-			xkbExtensionDeviceNotify *	ed,

-			XkbChangesPtr			changes,

-			XkbEventCausePtr		cause)

-{

-DeviceIntPtr			kbd;

-XkbStatePtr			state;

-XkbControlsPtr			ctrls;

-XkbChangesRec			my_changes;

-xkbExtensionDeviceNotify	my_ed;

-register unsigned		i,bit,affected;

-register XkbIndicatorMapPtr	map;

-unsigned			oldState;

-

-    if ((maps_to_check==0)||(sli->maps==NULL)||(sli->mapsPresent==0))

-	return;

-

-    if (dev->key && dev->key->xkbInfo)

-	 kbd= dev;

-    else kbd= inputInfo.keyboard;

-

-    state= &kbd->key->xkbInfo->state;

-    ctrls= kbd->key->xkbInfo->desc->ctrls;

-    affected= maps_to_check;

-    oldState= sli->effectiveState;

-    sli->autoState&= ~affected;

-    for (i=0,bit=1;(i<XkbNumIndicators)&&(affected);i++,bit<<=1) {

-	if ((affected&bit)==0)

-	    continue;

-	affected&= ~bit;

-	map= &sli->maps[i];

-	if((!(map->flags&XkbIM_NoAutomatic))&&ComputeAutoState(map,state,ctrls))

-	    sli->autoState|= bit;

-    }

-    sli->effectiveState= (sli->autoState|sli->explicitState);

-    affected= sli->effectiveState^oldState;

-    if (affected==0)

-	return;

-

-    if (ed==NULL) {

-	ed= &my_ed;

-	memset((char *)ed, 0, sizeof(xkbExtensionDeviceNotify));

-    }

-    else if ((ed->reason&XkbXI_IndicatorsMask)&&

-	     ((ed->ledClass!=sli->class)||(ed->ledID!=sli->id))) {

-	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);

-    }

-

-    if ((kbd==dev)&&(sli->flags&XkbSLI_IsDefault)) {

-	if (changes==NULL) {

-	    changes= &my_changes;

-	    memset((char *)changes, 0, sizeof(XkbChangesRec));

-	}

-	changes->indicators.state_changes|= affected;

-    }

-

-    ed->reason|=	XkbXI_IndicatorStateMask;

-    ed->ledClass= 	sli->class;

-    ed->ledID=		sli->id;

-    ed->ledsDefined=	sli->namesPresent|sli->mapsPresent;

-    ed->ledState=	sli->effectiveState;

-    ed->unsupported=	0;

-    ed->supported=	XkbXI_AllFeaturesMask;

-

-    if (changes!=&my_changes)	changes= NULL;

-    if (ed!=&my_ed)		ed= NULL;

-    if (changes || ed)

-	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);

-    return;

-}

-

-static void

-XkbUpdateAllDeviceIndicators(XkbChangesPtr changes,XkbEventCausePtr cause)

-{

-DeviceIntPtr		edev;

-XkbSrvLedInfoPtr	sli;

-

-    for (edev=inputInfo.devices;edev!=NULL;edev=edev->next) {

-	if (edev->kbdfeed) {

-	    KbdFeedbackPtr	kf;

-	    for (kf=edev->kbdfeed;kf!=NULL;kf=kf->next) {

-		if ((kf->xkb_sli==NULL)||(kf->xkb_sli->maps==NULL))

-		    continue;

-		sli= kf->xkb_sli;

-		XkbUpdateLedAutoState(edev,sli,sli->mapsPresent,NULL,

-								changes,cause);

-			

-	    }

-	}

-	if (edev->leds) {

-	    LedFeedbackPtr	lf;

-	    for (lf=edev->leds;lf!=NULL;lf=lf->next) {

-		if ((lf->xkb_sli==NULL)||(lf->xkb_sli->maps==NULL))

-		    continue;

-		sli= lf->xkb_sli;

-		XkbUpdateLedAutoState(edev,sli,sli->mapsPresent,NULL,

-								changes,cause);

-			

-	    }

-	}

-    }

-    return;

-}

-

-

-/***====================================================================***/

-

-	/*

-	 * void

-	 * XkbSetIndicators(dev,affect,values,cause)

-	 *

-	 * Attempts to change the indicators specified in 'affect' to the

-	 * states specified in 'values' for the default keyboard feedback

-	 * on the keyboard specified by 'dev.'   Attempts to change indicator

-	 * state might be ignored or have no affect, depending on the XKB

-	 * indicator map for any affected indicators, as described in section

-	 * 9.2 of the XKB protocol specification.

-	 *

-	 * If 'changes' is non-NULL, this function notes any changes to the

-	 * keyboard state, controls, or indicator state that result from this

-	 * attempted change.   If 'changes' is NULL, this function generates

-	 * XKB events to report any such changes to interested clients.

-	 *

-	 * If 'cause' is non-NULL, it specifies the reason for the change, 

-	 * as reported in some XKB events.   If it is NULL, this function 

-	 * assumes that the change is the result of a core protocol 

-	 * ChangeKeyboardMapping request.

-	 */

-

-void

-XkbSetIndicators(	DeviceIntPtr		dev,

-			CARD32			affect,

-			CARD32			values,

-			XkbEventCausePtr	cause)

-{

-XkbSrvLedInfoPtr		sli;

-XkbChangesRec			changes;

-xkbExtensionDeviceNotify	ed;

-unsigned 			side_affected;

-

-    memset((char *)&changes, 0, sizeof(XkbChangesRec));

-    memset((char *)&ed, 0, sizeof(xkbExtensionDeviceNotify));

-    sli= XkbFindSrvLedInfo(dev,XkbDfltXIClass,XkbDfltXIId,0);

-    sli->explicitState&= ~affect;

-    sli->explicitState|= (affect&values);

-    XkbApplyLedStateChanges(dev,sli,affect,&ed,&changes,cause);

-

-    side_affected= 0;

-    if (changes.state_changes!=0)

-	side_affected|= XkbIndicatorsToUpdate(dev,changes.state_changes,FALSE);

-    if (changes.ctrls.enabled_ctrls_changes)

-	side_affected|= sli->usesControls;

-

-    if (side_affected) {

-	XkbUpdateLedAutoState(dev,sli,side_affected,&ed,&changes,cause);

-	affect|= side_affected;

-    }

-    if (changes.state_changes || changes.ctrls.enabled_ctrls_changes)

-	XkbUpdateAllDeviceIndicators(NULL,cause);

-

-    XkbFlushLedEvents(dev,dev,sli,&ed,&changes,cause);

-    return;

-}

-

-/***====================================================================***/

-

-/***====================================================================***/

-

-	/*

-	 * void

-	 * XkbUpdateIndicators(dev,update,check_edevs,changes,cause)

-	 *

-	 * Applies the indicator maps for any indicators specified in

-	 * 'update' from the default keyboard feedback on the device

-	 * specified by 'dev.' 

-	 *

-	 * If 'changes' is NULL, this function generates and XKB events

-	 * required to report the necessary changes, otherwise it simply

-	 * notes the indicators with changed state.

-	 *

-	 * If 'check_edevs' is TRUE, this function also checks the indicator

-	 * maps for any open extension devices that have them, and updates

-	 * the state of any extension device indicators as necessary.

-	 */

-

-void

-XkbUpdateIndicators(	DeviceIntPtr		dev,

-			register CARD32		update,

-			Bool			check_edevs,

-			XkbChangesPtr		changes,

-			XkbEventCausePtr	cause)

-{

-XkbSrvLedInfoPtr	sli;

-

-    sli= XkbFindSrvLedInfo(dev,XkbDfltXIClass,XkbDfltXIId,0);

-    XkbUpdateLedAutoState(dev,sli,update,NULL,changes,cause);

-    if (check_edevs)

-	XkbUpdateAllDeviceIndicators(changes,cause);

-    return;

-}

-

-/***====================================================================***/

-

-/***====================================================================***/

-

-	/*

-	 * void

-	 * XkbCheckIndicatorMaps(dev,sli,which)

-	 *

-	 * Updates the 'indicator accelerators' for the indicators specified

-	 * by 'which' in the feedback specified by 'sli.' The indicator 

-	 * accelerators are internal to the server and are used to simplify 

-	 * and speed up the process of figuring out which indicators might 

-	 * be affected by a particular change in keyboard state or controls.

-	 */

-

-void

-XkbCheckIndicatorMaps(DeviceIntPtr dev,XkbSrvLedInfoPtr sli,unsigned which)

-{

-register unsigned	i,bit;

-XkbIndicatorMapPtr	map;

-XkbDescPtr		xkb;

-

-    if ((sli->flags&XkbSLI_HasOwnState)==0)

-        return;

-

-    sli->usesBase&=	 ~which;

-    sli->usesLatched&=	 ~which;

-    sli->usesLocked&=	 ~which;

-    sli->usesEffective&= ~which;

-    sli->usesCompat&=	 ~which;

-    sli->usesControls&=	 ~which;

-    sli->mapsPresent&=	 ~which;

-

-    xkb= dev->key->xkbInfo->desc;

-    for (i=0,bit=1,map=sli->maps;i<XkbNumIndicators;i++,bit<<=1,map++) {

-	if (which&bit) {

-	    CARD8		what;

-

-	    if (!map || !XkbIM_InUse(map))

-		continue;

-	    sli->mapsPresent|= bit;

-

-	    what= (map->which_mods|map->which_groups);

-	    if (what&XkbIM_UseBase)

-		 sli->usesBase|= bit;

-	    if (what&XkbIM_UseLatched)

-		 sli->usesLatched|= bit;

-	    if (what&XkbIM_UseLocked)

-		 sli->usesLocked|= bit;

-	    if (what&XkbIM_UseEffective)

-		 sli->usesEffective|= bit;

-	    if (what&XkbIM_UseCompat)

-		 sli->usesCompat|= bit;

-	    if (map->ctrls)

-		 sli->usesControls|= bit;

-

-	    map->mods.mask= map->mods.real_mods;

-	    if (map->mods.vmods!=0) {

-		map->mods.mask|= XkbMaskForVMask(xkb,map->mods.vmods);

-	    }

-	}

-    }

-    sli->usedComponents= 0;

-    if (sli->usesBase)

-	sli->usedComponents|= XkbModifierBaseMask|XkbGroupBaseMask;

-    if (sli->usesLatched)

-	sli->usedComponents|= XkbModifierLatchMask|XkbGroupLatchMask;

-    if (sli->usesLocked)

-	sli->usedComponents|= XkbModifierLockMask|XkbGroupLockMask;

-    if (sli->usesEffective)

-	sli->usedComponents|= XkbModifierStateMask|XkbGroupStateMask;

-    if (sli->usesCompat)

-	sli->usedComponents|= XkbCompatStateMask;

-    return;

-}

-

-/***====================================================================***/

-

-	/*

-	 * XkbSrvLedInfoPtr

-	 * XkbAllocSrvLedInfo(dev,kf,lf,needed_parts)

-	 *

-	 * Allocates an XkbSrvLedInfoPtr for the feedback specified by either

-	 * 'kf' or 'lf' on the keyboard specified by 'dev.'

-	 *

-	 * If 'needed_parts' is non-zero, this function makes sure that any

-	 * of the parts speicified therein are allocated.

-	 */

-XkbSrvLedInfoPtr

-XkbAllocSrvLedInfo(	DeviceIntPtr		dev,

-			KbdFeedbackPtr		kf,

-			LedFeedbackPtr		lf,

-			unsigned		needed_parts)

-{

-XkbSrvLedInfoPtr	sli;

-Bool			checkAccel;

-Bool			checkNames;

-

-    sli= NULL;

-    checkAccel= checkNames= FALSE;

-    if ((kf!=NULL)&&(kf->xkb_sli==NULL)) {

-	kf->xkb_sli= sli= calloc(1, sizeof(XkbSrvLedInfoRec));

-	if (sli==NULL)

-	    return NULL; /* ALLOCATION ERROR */

-	if (dev->key && dev->key->xkbInfo)

-	     sli->flags= XkbSLI_HasOwnState;

-	else sli->flags= 0;	

-	sli->class=	KbdFeedbackClass;

-	sli->id=	kf->ctrl.id;

-	sli->fb.kf=	kf;

-

-	sli->autoState=		0;

-	sli->explicitState=	kf->ctrl.leds;

-	sli->effectiveState=	kf->ctrl.leds;

-

-	if ((kf==dev->kbdfeed) && (dev->key) && (dev->key->xkbInfo)) {

-	    XkbDescPtr	xkb;

-	    xkb= dev->key->xkbInfo->desc;

-	    sli->flags|= 		XkbSLI_IsDefault;

-	    sli->physIndicators=	xkb->indicators->phys_indicators;

-	    sli->names=			xkb->names->indicators;

-	    sli->maps=			xkb->indicators->maps;

-	    checkNames= checkAccel=	TRUE;

-	}

-	else {

-	    sli->physIndicators=	XkbAllIndicatorsMask;

-	    sli->names=			NULL;

-	    sli->maps=			NULL;

-	}

-    }

-    else if ((kf!=NULL)&&((kf->xkb_sli->flags&XkbSLI_IsDefault)!=0)) {

-	XkbDescPtr	xkb;

-	xkb= dev->key->xkbInfo->desc;

-	sli= kf->xkb_sli;

-	sli->physIndicators=	xkb->indicators->phys_indicators;

-	if (xkb->names->indicators!=sli->names) {

-	    checkNames= TRUE;

-	    sli->names= xkb->names->indicators;

-	}

-	if (xkb->indicators->maps!=sli->maps) {

-	    checkAccel= TRUE;

-	    sli->maps= xkb->indicators->maps;

-	}

-    }

-    else if ((lf!=NULL)&&(lf->xkb_sli==NULL)) {

-	lf->xkb_sli= sli= calloc(1, sizeof(XkbSrvLedInfoRec));

-	if (sli==NULL)

-	    return NULL; /* ALLOCATION ERROR */

-	if (dev->key && dev->key->xkbInfo)

-	     sli->flags= XkbSLI_HasOwnState;

-	else sli->flags= 0;	

-	sli->class=	LedFeedbackClass;

-	sli->id=	lf->ctrl.id;

-	sli->fb.lf=	lf;

-

-	sli->physIndicators=	lf->ctrl.led_mask;

-	sli->autoState=		0;

-	sli->explicitState=	lf->ctrl.led_values;

-	sli->effectiveState=	lf->ctrl.led_values;

-	sli->maps=		NULL;

-	sli->names=		NULL;

-    }

-    else

-	return NULL;

-    if ((sli->names==NULL)&&(needed_parts&XkbXI_IndicatorNamesMask))

-	sli->names= calloc(XkbNumIndicators, sizeof(Atom));

-    if ((sli->maps==NULL)&&(needed_parts&XkbXI_IndicatorMapsMask))

-	sli->maps= calloc(XkbNumIndicators, sizeof(XkbIndicatorMapRec));

-    if (checkNames) {

-	register unsigned i,bit;

-	sli->namesPresent=	0;

-	for (i=0,bit=1;i<XkbNumIndicators;i++,bit<<=1) {

-	    if (sli->names[i]!=None)

-		sli->namesPresent|= bit;

-	}

-    }

-    if (checkAccel)

-	 XkbCheckIndicatorMaps(dev,sli,XkbAllIndicatorsMask);

-    return sli;

-}

-

-void

-XkbFreeSrvLedInfo(XkbSrvLedInfoPtr sli)

-{

-    if ((sli->flags&XkbSLI_IsDefault)==0) {

-	free(sli->maps);

-	free(sli->names);

-    }

-    sli->maps= NULL;

-    sli->names= NULL;

-    free(sli);

-    return;

-}

-

-/*

- * XkbSrvLedInfoPtr

- * XkbCopySrvLedInfo(dev,src,kf,lf)

- *

- * Takes the given XkbSrvLedInfoPtr and duplicates it. A deep copy is made,

- * thus the new copy behaves like the original one and can be freed with

- * XkbFreeSrvLedInfo.

- */

-XkbSrvLedInfoPtr

-XkbCopySrvLedInfo(	DeviceIntPtr		from,

-			XkbSrvLedInfoPtr	src,

-			KbdFeedbackPtr		kf,

-			LedFeedbackPtr		lf)

-{

-    XkbSrvLedInfoPtr sli_new = NULL;

-

-    if (!src)

-	goto finish;

-

-    sli_new = calloc(1, sizeof( XkbSrvLedInfoRec));

-    if (!sli_new)

-	goto finish;

-

-    memcpy(sli_new, src, sizeof(XkbSrvLedInfoRec));

-    if (sli_new->class == KbdFeedbackClass)

-	sli_new->fb.kf = kf;

-    else

-	sli_new->fb.lf = lf;

-

-    if (!(sli_new->flags & XkbSLI_IsDefault)) {

-	sli_new->names= calloc(XkbNumIndicators, sizeof(Atom));

-	sli_new->maps= calloc(XkbNumIndicators, sizeof(XkbIndicatorMapRec));

-    } /* else sli_new->names/maps is pointing to

-	dev->key->xkbInfo->desc->names->indicators;

-	dev->key->xkbInfo->desc->names->indicators; */

-

-finish:

-    return sli_new;

-}

-

-/***====================================================================***/

-

-	/*

-	 * XkbSrvLedInfoPtr

-	 * XkbFindSrvLedInfo(dev,class,id,needed_parts)

-	 *

-	 * Finds the XkbSrvLedInfoPtr for the specified 'class' and 'id'

-	 * on the device specified by 'dev.'   If the class and id specify

-	 * a valid device feedback, this function returns the existing 

-	 * feedback or allocates a new one.

-	 *

-	 */

-

-XkbSrvLedInfoPtr

-XkbFindSrvLedInfo(	DeviceIntPtr		dev,

-			unsigned		class,

-			unsigned		id,

-			unsigned		needed_parts)

-{

-XkbSrvLedInfoPtr	sli;

-

-    /* optimization to check for most common case */

-    if (((class==XkbDfltXIClass)&&(id==XkbDfltXIId))&&(dev->kbdfeed)) {

-	XkbSrvLedInfoPtr	sli;

-	sli= dev->kbdfeed->xkb_sli;

-	if (dev->kbdfeed->xkb_sli==NULL) {

-	    sli= XkbAllocSrvLedInfo(dev,dev->kbdfeed,NULL,needed_parts);

-	    dev->kbdfeed->xkb_sli= sli;

-	}

-	return dev->kbdfeed->xkb_sli;

-    }

-

-    sli= NULL;

-    if (class==XkbDfltXIClass) {

-	if (dev->kbdfeed)	class= KbdFeedbackClass;

-	else if (dev->leds)	class= LedFeedbackClass;

-	else 			return NULL;

-    }

-    if (class==KbdFeedbackClass) {

-	KbdFeedbackPtr	kf;

-	for (kf=dev->kbdfeed;kf!=NULL;kf=kf->next) {

-	    if ((id==XkbDfltXIId)||(id==kf->ctrl.id)) {

-		if (kf->xkb_sli==NULL)

-		    kf->xkb_sli= XkbAllocSrvLedInfo(dev,kf,NULL,needed_parts);

-		sli= kf->xkb_sli;

-		break;

-	    }	

-	}

-    }

-    else if (class==LedFeedbackClass) {

-	LedFeedbackPtr	lf;

-	for (lf=dev->leds;lf!=NULL;lf=lf->next) {

-	    if ((id==XkbDfltXIId)||(id==lf->ctrl.id)) {

-		if (lf->xkb_sli==NULL)

-		    lf->xkb_sli= XkbAllocSrvLedInfo(dev,NULL,lf,needed_parts);

-		sli= lf->xkb_sli;

-		break;

-	    }	

-	}

-    }

-    if (sli) {

-	if ((sli->names==NULL)&&(needed_parts&XkbXI_IndicatorNamesMask))

-	    sli->names= calloc(XkbNumIndicators, sizeof(Atom));

-	if ((sli->maps==NULL)&&(needed_parts&XkbXI_IndicatorMapsMask))

-	    sli->maps= calloc(XkbNumIndicators, sizeof(XkbIndicatorMapRec));

-    }

-    return sli;

-}

-

-/***====================================================================***/

-

-void

-XkbFlushLedEvents(	DeviceIntPtr			dev,

-			DeviceIntPtr			kbd,

-			XkbSrvLedInfoPtr		sli,

-			xkbExtensionDeviceNotify *	ed,

-			XkbChangesPtr			changes,

-			XkbEventCausePtr		cause)

-{

-    if (changes) {

-	if (changes->indicators.state_changes)

-	    XkbDDXUpdateDeviceIndicators(dev,sli,sli->effectiveState);

-	XkbSendNotification(kbd,changes,cause);

-	memset((char *)changes, 0, sizeof(XkbChangesRec));

-

-	if (XkbAX_NeedFeedback(kbd->key->xkbInfo->desc->ctrls, XkbAX_IndicatorFBMask)) {

-		if (sli->effectiveState)

-			/* it appears that the which parameter is not used */

-			XkbDDXAccessXBeep(dev, _BEEP_LED_ON, XkbAccessXFeedbackMask);

-		else

-			XkbDDXAccessXBeep(dev, _BEEP_LED_OFF, XkbAccessXFeedbackMask);

-	}

-    }

-    if (ed) {

-	if (ed->reason) {

-	    if ((dev!=kbd)&&(ed->reason&XkbXI_IndicatorStateMask))

-		XkbDDXUpdateDeviceIndicators(dev,sli,sli->effectiveState);

-	    XkbSendExtensionDeviceNotify(dev,cause->client,ed);

-	}

-	memset((char *)ed, 0, sizeof(XkbExtensionDeviceNotify));

-    }

-    return;

-}

-

-/***====================================================================***/

-

-void

-XkbApplyLedNameChanges(	DeviceIntPtr 			dev,

-			XkbSrvLedInfoPtr		sli,

-			unsigned			changed_names,

-			xkbExtensionDeviceNotify *	ed,

-			XkbChangesPtr			changes,

-			XkbEventCausePtr		cause)

-{

-DeviceIntPtr			kbd;

-XkbChangesRec			my_changes;

-xkbExtensionDeviceNotify	my_ed;

-

-    if (changed_names==0)

-	return;

-    if (dev->key && dev->key->xkbInfo)

-	 kbd= dev;

-    else kbd= inputInfo.keyboard;

-

-    if (ed==NULL) {

-	ed= &my_ed;

-	memset((char *)ed, 0, sizeof(xkbExtensionDeviceNotify));

-    }

-    else if ((ed->reason&XkbXI_IndicatorsMask)&&

-	     ((ed->ledClass!=sli->class)||(ed->ledID!=sli->id))) {

-	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);

-    }

-

-    if ((kbd==dev)&&(sli->flags&XkbSLI_IsDefault)) { 

-	if (changes==NULL) {

-	   changes= &my_changes;

-	   memset((char *)changes, 0, sizeof(XkbChangesRec));

-	}

-	changes->names.changed|= XkbIndicatorNamesMask;

-	changes->names.changed_indicators|= changed_names;

-    }

-

-    ed->reason|=	XkbXI_IndicatorNamesMask;

-    ed->ledClass= 	sli->class;

-    ed->ledID=		sli->id;

-    ed->ledsDefined=	sli->namesPresent|sli->mapsPresent;

-    ed->ledState=	sli->effectiveState;

-    ed->unsupported=	0;

-    ed->supported=	XkbXI_AllFeaturesMask;

-

-    if (changes!=&my_changes)	changes= NULL;

-    if (ed!=&my_ed)		ed= NULL;

-    if (changes || ed)

-	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);

-    return;

-}

-/***====================================================================***/

-

-	/*

-	 * void

-	 * XkbApplyLedMapChanges(dev,sli,changed_maps,changes,cause)

-	 *

-	 * Handles all of the secondary effects of the changes to the

-	 * feedback specified by 'sli' on the device specified by 'dev.'

-	 * 

-	 * If 'changed_maps' specifies any indicators, this function generates

-	 * XkbExtensionDeviceNotify events and possibly IndicatorMapNotify

-	 * events to report the changes, and recalculates the effective

-	 * state of each indicator with a changed map.  If any indicators

-	 * change state, the server generates XkbExtensionDeviceNotify and

-	 * XkbIndicatorStateNotify events as appropriate.

-	 *

-	 * If 'changes' is non-NULL, this function updates it to reflect

-	 * any changes to the keyboard state or controls or to the 'core'

-	 * indicator names, maps, or state.   If 'changes' is NULL, this

-	 * function generates XKB events as needed to report the changes.

-	 * If 'dev' is not a keyboard device, any changes are reported

-	 * for the core keyboard.

-	 *

-	 * The 'cause' specifies the reason for the event (key event or

-	 * request) for the change, as reported in some XKB events.

-	 */

-

-void

-XkbApplyLedMapChanges(	DeviceIntPtr 			dev,

-			XkbSrvLedInfoPtr		sli,

-			unsigned			changed_maps,

-			xkbExtensionDeviceNotify *	ed,

-			XkbChangesPtr			changes,

-			XkbEventCausePtr		cause)

-{

-DeviceIntPtr			kbd;

-XkbChangesRec			my_changes;

-xkbExtensionDeviceNotify	my_ed;

-

-    if (changed_maps==0)

-	return;

-    if (dev->key && dev->key->xkbInfo)

-	 kbd= dev;

-    else kbd= inputInfo.keyboard;

-

-    if (ed==NULL) {

-	ed= &my_ed;

-	memset((char *)ed, 0, sizeof(xkbExtensionDeviceNotify));

-    }

-    else if ((ed->reason&XkbXI_IndicatorsMask)&&

-	     ((ed->ledClass!=sli->class)||(ed->ledID!=sli->id))) {

-	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);

-    }

-

-    if ((kbd==dev)&&(sli->flags&XkbSLI_IsDefault)) {

-	if (changes==NULL) {

-	    changes= &my_changes;

-	    memset((char *)changes, 0, sizeof(XkbChangesRec));

-	}

-	changes->indicators.map_changes|= changed_maps;

-    }

-

-    XkbCheckIndicatorMaps(dev,sli,changed_maps);

-

-    ed->reason|=	XkbXI_IndicatorMapsMask;

-    ed->ledClass= 	sli->class;

-    ed->ledID=		sli->id;

-    ed->ledsDefined=	sli->namesPresent|sli->mapsPresent;

-    ed->ledState=	sli->effectiveState;

-    ed->unsupported=	0;

-    ed->supported=	XkbXI_AllFeaturesMask;

-

-    XkbUpdateLedAutoState(dev,sli,changed_maps,ed,changes,cause);

-

-    if (changes!=&my_changes)	changes= NULL;

-    if (ed!=&my_ed)		ed= NULL;

-    if (changes || ed)

-	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);

-    return;

-}

-

-/***====================================================================***/

-

-void

-XkbApplyLedStateChanges(DeviceIntPtr 			dev,

-			XkbSrvLedInfoPtr		sli,

-			unsigned			changed_leds,

-			xkbExtensionDeviceNotify *	ed,

-			XkbChangesPtr			changes,

-			XkbEventCausePtr		cause)

-{

-XkbSrvInfoPtr			xkbi;

-DeviceIntPtr			kbd;

-XkbChangesRec			my_changes;

-xkbExtensionDeviceNotify	my_ed;

-register unsigned		i,bit,affected;

-XkbIndicatorMapPtr		map;

-unsigned			oldState;

-Bool				kb_changed;

-

-    if (changed_leds==0)

-	return;

-    if (dev->key && dev->key->xkbInfo)

-	 kbd= dev;

-    else kbd= inputInfo.keyboard;

-    xkbi= kbd->key->xkbInfo;

-

-    if (changes==NULL) {

-	changes= &my_changes;

-	memset((char *)changes, 0, sizeof(XkbChangesRec));

-    }

-

-    kb_changed= FALSE;

-    affected= changed_leds;

-    oldState= sli->effectiveState;

-    for (i=0,bit=1;(i<XkbNumIndicators)&&(affected);i++,bit<<=1) {

-	if ((affected&bit)==0)

-	    continue;

-	affected&= ~bit;

-	map= &sli->maps[i];

-	if (map->flags&XkbIM_NoExplicit) {

-	    sli->explicitState&= ~bit;

-	    continue;

-	}

-	if (map->flags&XkbIM_LEDDrivesKB) {

-	    Bool on= ((sli->explicitState&bit)!=0);

-	    if (XkbApplyLEDChangeToKeyboard(xkbi,map,on,changes))

-		kb_changed= TRUE;

-	}

-    }

-    sli->effectiveState= (sli->autoState|sli->explicitState);

-    affected= sli->effectiveState^oldState;

-

-    if (ed==NULL) {

-	ed= &my_ed;

-	memset((char *)ed, 0, sizeof(xkbExtensionDeviceNotify));

-    }

-    else if (affected&&(ed->reason&XkbXI_IndicatorsMask)&&

-	     ((ed->ledClass!=sli->class)||(ed->ledID!=sli->id))) {

-	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);

-    }

-

-    if ((kbd==dev)&&(sli->flags&XkbSLI_IsDefault))

-	changes->indicators.state_changes|= affected;

-    if (affected) {

-	ed->reason|=		XkbXI_IndicatorStateMask;

-	ed->ledClass= 		sli->class;

-	ed->ledID=		sli->id;

-	ed->ledsDefined=	sli->namesPresent|sli->mapsPresent;

-	ed->ledState=		sli->effectiveState;

-	ed->unsupported=	0;

-	ed->supported=		XkbXI_AllFeaturesMask;

-    }

-

-    if (kb_changed) {

-	XkbComputeDerivedState(kbd->key->xkbInfo);

-	XkbUpdateLedAutoState(dev,sli,sli->mapsPresent,ed,changes,cause);

-    }

-

-    if (changes!=&my_changes)	changes= NULL;

-    if (ed!=&my_ed)		ed= NULL;

-    if (changes || ed)

-	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);

-    if (kb_changed)

-	XkbUpdateAllDeviceIndicators(NULL,cause);

-    return;

-}

+/************************************************************
+Copyright (c) 1995 by Silicon Graphics Computer Systems, Inc.
+
+Permission to use, copy, modify, and distribute this
+software and its documentation for any purpose and without
+fee is hereby granted, 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 Silicon Graphics not be 
+used in advertising or publicity pertaining to distribution 
+of the software without specific prior written permission.
+Silicon Graphics makes no representation about the suitability 
+of this software for any purpose. It is provided "as is"
+without any express or implied warranty.
+
+SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 
+SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 
+AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
+GRAPHICS 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.
+
+********************************************************/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdio.h>
+#include <ctype.h>
+#include <math.h>
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "misc.h"
+#include "inputstr.h"
+
+#include <X11/extensions/XI.h>
+#include <xkbsrv.h>
+#include "xkb.h"
+
+/***====================================================================***/
+
+	/*
+	 * unsigned
+	 * XkbIndicatorsToUpdate(dev,changed,check_devs_rtrn)
+	 *
+	 * Given a keyboard and a set of state components that have changed,
+	 * this function returns the indicators on the default keyboard 
+	 * feedback that might be affected.   It also reports whether or not 
+	 * any extension devices might be affected in check_devs_rtrn.
+	 */
+
+unsigned
+XkbIndicatorsToUpdate(	DeviceIntPtr	dev,
+			unsigned long 	state_changes,
+			Bool		enable_changes)
+{
+register unsigned	update=	0;
+XkbSrvLedInfoPtr	sli;
+
+    sli= XkbFindSrvLedInfo(dev,XkbDfltXIClass,XkbDfltXIId,0);
+
+    if (!sli)
+        return update;
+
+    if (state_changes&(XkbModifierStateMask|XkbGroupStateMask))
+	update|= sli->usesEffective;
+    if (state_changes&(XkbModifierBaseMask|XkbGroupBaseMask))
+	update|= sli->usesBase;
+    if (state_changes&(XkbModifierLatchMask|XkbGroupLatchMask))
+	update|= sli->usesLatched;
+    if (state_changes&(XkbModifierLockMask|XkbGroupLockMask))
+	update|= sli->usesLocked;
+    if (state_changes&XkbCompatStateMask)
+	update|= sli->usesCompat;
+    if (enable_changes)
+	update|= sli->usesControls;
+    return update;
+}
+
+/***====================================================================***/
+
+	/*
+	 * Bool
+	 *XkbApplyLEDChangeToKeyboard(xkbi,map,on,change)
+	 *
+	 * Some indicators "drive" the keyboard when their state is explicitly 
+	 * changed, as described in section 9.2.1 of the XKB protocol spec.
+	 * This function updates the state and controls for the keyboard 
+	 * specified by 'xkbi' to reflect any changes that are required 
+	 * when the indicator described by 'map' is turned on or off.  The
+	 * extent of the changes is reported in change, which must be defined.
+	 */
+static Bool
+XkbApplyLEDChangeToKeyboard(	XkbSrvInfoPtr		xkbi,
+				XkbIndicatorMapPtr	map,
+				Bool			on,
+				XkbChangesPtr		change)
+{
+Bool		ctrlChange,stateChange;
+XkbStatePtr	state;
+
+    if ((map->flags&XkbIM_NoExplicit)||((map->flags&XkbIM_LEDDrivesKB)==0))
+	return FALSE;
+    ctrlChange= stateChange= FALSE;
+    if (map->ctrls) {
+	XkbControlsPtr	ctrls= xkbi->desc->ctrls;
+	unsigned 	old;
+
+	old= ctrls->enabled_ctrls;
+	if (on)	ctrls->enabled_ctrls|= map->ctrls;
+	else	ctrls->enabled_ctrls&= ~map->ctrls;
+	if (old!=ctrls->enabled_ctrls) {
+	    change->ctrls.changed_ctrls= XkbControlsEnabledMask;
+	    change->ctrls.enabled_ctrls_changes= old^ctrls->enabled_ctrls;
+	    ctrlChange= TRUE;
+	}
+    }
+    state= &xkbi->state;
+    if ((map->groups)&&((map->which_groups&(~XkbIM_UseBase))!=0)) {
+	register int i;
+	register unsigned bit,match;
+
+	if (on)	match= (map->groups)&XkbAllGroupsMask;
+	else 	match= (~map->groups)&XkbAllGroupsMask;
+	if (map->which_groups&(XkbIM_UseLocked|XkbIM_UseEffective)) {
+	    for (i=0,bit=1;i<XkbNumKbdGroups;i++,bit<<=1) {
+		if (bit&match)
+		    break;
+	    }
+	    if (map->which_groups&XkbIM_UseLatched)
+		XkbLatchGroup(xkbi->device,0); /* unlatch group */
+	    state->locked_group= i;
+	    stateChange= TRUE;
+	}
+	else if (map->which_groups&(XkbIM_UseLatched|XkbIM_UseEffective)) {
+	    for (i=0,bit=1;i<XkbNumKbdGroups;i++,bit<<=1) {
+		if (bit&match)
+		    break;
+	    }
+	    state->locked_group= 0;
+	    XkbLatchGroup(xkbi->device,i);
+	    stateChange= TRUE;
+	}
+    }
+    if ((map->mods.mask)&&((map->which_mods&(~XkbIM_UseBase))!=0)) {
+	if (map->which_mods&(XkbIM_UseLocked|XkbIM_UseEffective)) {
+	    register unsigned long old;
+	    old= state->locked_mods;
+	    if (on)	state->locked_mods|= map->mods.mask;
+	    else	state->locked_mods&= ~map->mods.mask;
+	    if (state->locked_mods!=old)
+		stateChange= TRUE;
+	}
+	if (map->which_mods&(XkbIM_UseLatched|XkbIM_UseEffective)) {
+	    register unsigned long newmods;
+	    newmods= state->latched_mods;
+	    if (on)	newmods|=  map->mods.mask;
+	    else	newmods&= ~map->mods.mask;
+	    if (newmods!=state->locked_mods) {
+		newmods&= map->mods.mask;
+		XkbLatchModifiers(xkbi->device,map->mods.mask,newmods);
+		stateChange= TRUE;
+	    }
+	}
+    }
+    return stateChange || ctrlChange;
+}
+	
+	/*
+	 * Bool
+	 * ComputeAutoState(map,state,ctrls)
+	 *
+	 * This function reports the effect of applying the specified
+	 * indicator map given the specified state and controls, as
+	 * described in section 9.2 of the XKB protocol specification.
+	 */
+
+static Bool
+ComputeAutoState(	XkbIndicatorMapPtr	map,
+			XkbStatePtr 		state,
+			XkbControlsPtr 		ctrls)
+{
+Bool 			on;
+CARD8 			mods,group;
+
+    on= FALSE;
+    mods= group= 0;
+    if (map->which_mods&XkbIM_UseAnyMods) {
+	if (map->which_mods&XkbIM_UseBase)
+	    mods|= state->base_mods;
+	if (map->which_mods&XkbIM_UseLatched)
+	    mods|= state->latched_mods;
+	if (map->which_mods&XkbIM_UseLocked)
+	    mods|= state->locked_mods;
+	if (map->which_mods&XkbIM_UseEffective)
+	    mods|= state->mods;
+	if (map->which_mods&XkbIM_UseCompat)
+	    mods|= state->compat_state;
+	on = ((map->mods.mask&mods)!=0);
+	on = on||((mods==0)&&(map->mods.mask==0)&&(map->mods.vmods==0));
+    }
+    if (map->which_groups&XkbIM_UseAnyGroup) {
+	if (map->which_groups&XkbIM_UseBase)
+	    group|= (1L << state->base_group);
+	if (map->which_groups&XkbIM_UseLatched)
+	    group|= (1L << state->latched_group);
+	if (map->which_groups&XkbIM_UseLocked)
+	    group|= (1L << state->locked_group);
+	if (map->which_groups&XkbIM_UseEffective)
+	    group|= (1L << state->group);
+	on = on||(((map->groups&group)!=0)||(map->groups==0));
+    }
+    if (map->ctrls)
+	on = on||(ctrls->enabled_ctrls&map->ctrls);
+    return on;
+}
+
+
+static void
+XkbUpdateLedAutoState(	DeviceIntPtr			dev,
+			XkbSrvLedInfoPtr		sli,
+			unsigned			maps_to_check,
+			xkbExtensionDeviceNotify *	ed,
+			XkbChangesPtr			changes,
+			XkbEventCausePtr		cause)
+{
+DeviceIntPtr			kbd;
+XkbStatePtr			state;
+XkbControlsPtr			ctrls;
+XkbChangesRec			my_changes;
+xkbExtensionDeviceNotify	my_ed;
+register unsigned		i,bit,affected;
+register XkbIndicatorMapPtr	map;
+unsigned			oldState;
+
+    if ((maps_to_check==0)||(sli->maps==NULL)||(sli->mapsPresent==0))
+	return;
+
+    if (dev->key && dev->key->xkbInfo)
+	 kbd= dev;
+    else kbd= inputInfo.keyboard;
+
+    state= &kbd->key->xkbInfo->state;
+    ctrls= kbd->key->xkbInfo->desc->ctrls;
+    affected= maps_to_check;
+    oldState= sli->effectiveState;
+    sli->autoState&= ~affected;
+    for (i=0,bit=1;(i<XkbNumIndicators)&&(affected);i++,bit<<=1) {
+	if ((affected&bit)==0)
+	    continue;
+	affected&= ~bit;
+	map= &sli->maps[i];
+	if((!(map->flags&XkbIM_NoAutomatic))&&ComputeAutoState(map,state,ctrls))
+	    sli->autoState|= bit;
+    }
+    sli->effectiveState= (sli->autoState|sli->explicitState);
+    affected= sli->effectiveState^oldState;
+    if (affected==0)
+	return;
+
+    if (ed==NULL) {
+	ed= &my_ed;
+	memset((char *)ed, 0, sizeof(xkbExtensionDeviceNotify));
+    }
+    else if ((ed->reason&XkbXI_IndicatorsMask)&&
+	     ((ed->ledClass!=sli->class)||(ed->ledID!=sli->id))) {
+	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);
+    }
+
+    if ((kbd==dev)&&(sli->flags&XkbSLI_IsDefault)) {
+	if (changes==NULL) {
+	    changes= &my_changes;
+	    memset((char *)changes, 0, sizeof(XkbChangesRec));
+	}
+	changes->indicators.state_changes|= affected;
+    }
+
+    ed->reason|=	XkbXI_IndicatorStateMask;
+    ed->ledClass= 	sli->class;
+    ed->ledID=		sli->id;
+    ed->ledsDefined=	sli->namesPresent|sli->mapsPresent;
+    ed->ledState=	sli->effectiveState;
+    ed->unsupported=	0;
+    ed->supported=	XkbXI_AllFeaturesMask;
+
+    if (changes!=&my_changes)	changes= NULL;
+    if (ed!=&my_ed)		ed= NULL;
+    if (changes || ed)
+	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);
+    return;
+}
+
+static void
+XkbUpdateAllDeviceIndicators(XkbChangesPtr changes,XkbEventCausePtr cause)
+{
+DeviceIntPtr		edev;
+XkbSrvLedInfoPtr	sli;
+
+    for (edev=inputInfo.devices;edev!=NULL;edev=edev->next) {
+	if (edev->kbdfeed) {
+	    KbdFeedbackPtr	kf;
+	    for (kf=edev->kbdfeed;kf!=NULL;kf=kf->next) {
+		if ((kf->xkb_sli==NULL)||(kf->xkb_sli->maps==NULL))
+		    continue;
+		sli= kf->xkb_sli;
+		XkbUpdateLedAutoState(edev,sli,sli->mapsPresent,NULL,
+								changes,cause);
+			
+	    }
+	}
+	if (edev->leds) {
+	    LedFeedbackPtr	lf;
+	    for (lf=edev->leds;lf!=NULL;lf=lf->next) {
+		if ((lf->xkb_sli==NULL)||(lf->xkb_sli->maps==NULL))
+		    continue;
+		sli= lf->xkb_sli;
+		XkbUpdateLedAutoState(edev,sli,sli->mapsPresent,NULL,
+								changes,cause);
+			
+	    }
+	}
+    }
+    return;
+}
+
+
+/***====================================================================***/
+
+	/*
+	 * void
+	 * XkbSetIndicators(dev,affect,values,cause)
+	 *
+	 * Attempts to change the indicators specified in 'affect' to the
+	 * states specified in 'values' for the default keyboard feedback
+	 * on the keyboard specified by 'dev.'   Attempts to change indicator
+	 * state might be ignored or have no affect, depending on the XKB
+	 * indicator map for any affected indicators, as described in section
+	 * 9.2 of the XKB protocol specification.
+	 *
+	 * If 'changes' is non-NULL, this function notes any changes to the
+	 * keyboard state, controls, or indicator state that result from this
+	 * attempted change.   If 'changes' is NULL, this function generates
+	 * XKB events to report any such changes to interested clients.
+	 *
+	 * If 'cause' is non-NULL, it specifies the reason for the change, 
+	 * as reported in some XKB events.   If it is NULL, this function 
+	 * assumes that the change is the result of a core protocol 
+	 * ChangeKeyboardMapping request.
+	 */
+
+void
+XkbSetIndicators(	DeviceIntPtr		dev,
+			CARD32			affect,
+			CARD32			values,
+			XkbEventCausePtr	cause)
+{
+XkbSrvLedInfoPtr		sli;
+XkbChangesRec			changes;
+xkbExtensionDeviceNotify	ed;
+unsigned 			side_affected;
+
+    memset((char *)&changes, 0, sizeof(XkbChangesRec));
+    memset((char *)&ed, 0, sizeof(xkbExtensionDeviceNotify));
+    sli= XkbFindSrvLedInfo(dev,XkbDfltXIClass,XkbDfltXIId,0);
+    sli->explicitState&= ~affect;
+    sli->explicitState|= (affect&values);
+    XkbApplyLedStateChanges(dev,sli,affect,&ed,&changes,cause);
+
+    side_affected= 0;
+    if (changes.state_changes!=0)
+	side_affected|= XkbIndicatorsToUpdate(dev,changes.state_changes,FALSE);
+    if (changes.ctrls.enabled_ctrls_changes)
+	side_affected|= sli->usesControls;
+
+    if (side_affected) {
+	XkbUpdateLedAutoState(dev,sli,side_affected,&ed,&changes,cause);
+	affect|= side_affected;
+    }
+    if (changes.state_changes || changes.ctrls.enabled_ctrls_changes)
+	XkbUpdateAllDeviceIndicators(NULL,cause);
+
+    XkbFlushLedEvents(dev,dev,sli,&ed,&changes,cause);
+    return;
+}
+
+/***====================================================================***/
+
+/***====================================================================***/
+
+	/*
+	 * void
+	 * XkbUpdateIndicators(dev,update,check_edevs,changes,cause)
+	 *
+	 * Applies the indicator maps for any indicators specified in
+	 * 'update' from the default keyboard feedback on the device
+	 * specified by 'dev.' 
+	 *
+	 * If 'changes' is NULL, this function generates and XKB events
+	 * required to report the necessary changes, otherwise it simply
+	 * notes the indicators with changed state.
+	 *
+	 * If 'check_edevs' is TRUE, this function also checks the indicator
+	 * maps for any open extension devices that have them, and updates
+	 * the state of any extension device indicators as necessary.
+	 */
+
+void
+XkbUpdateIndicators(	DeviceIntPtr		dev,
+			register CARD32		update,
+			Bool			check_edevs,
+			XkbChangesPtr		changes,
+			XkbEventCausePtr	cause)
+{
+XkbSrvLedInfoPtr	sli;
+
+    sli= XkbFindSrvLedInfo(dev,XkbDfltXIClass,XkbDfltXIId,0);
+    XkbUpdateLedAutoState(dev,sli,update,NULL,changes,cause);
+    if (check_edevs)
+	XkbUpdateAllDeviceIndicators(changes,cause);
+    return;
+}
+
+/***====================================================================***/
+
+/***====================================================================***/
+
+	/*
+	 * void
+	 * XkbCheckIndicatorMaps(dev,sli,which)
+	 *
+	 * Updates the 'indicator accelerators' for the indicators specified
+	 * by 'which' in the feedback specified by 'sli.' The indicator 
+	 * accelerators are internal to the server and are used to simplify 
+	 * and speed up the process of figuring out which indicators might 
+	 * be affected by a particular change in keyboard state or controls.
+	 */
+
+void
+XkbCheckIndicatorMaps(DeviceIntPtr dev,XkbSrvLedInfoPtr sli,unsigned which)
+{
+register unsigned	i,bit;
+XkbIndicatorMapPtr	map;
+XkbDescPtr		xkb;
+
+    if ((sli->flags&XkbSLI_HasOwnState)==0)
+        return;
+
+    sli->usesBase&=	 ~which;
+    sli->usesLatched&=	 ~which;
+    sli->usesLocked&=	 ~which;
+    sli->usesEffective&= ~which;
+    sli->usesCompat&=	 ~which;
+    sli->usesControls&=	 ~which;
+    sli->mapsPresent&=	 ~which;
+
+    xkb= dev->key->xkbInfo->desc;
+    for (i=0,bit=1,map=sli->maps;i<XkbNumIndicators;i++,bit<<=1,map++) {
+	if (which&bit) {
+	    CARD8		what;
+
+	    if (!map || !XkbIM_InUse(map))
+		continue;
+	    sli->mapsPresent|= bit;
+
+	    what= (map->which_mods|map->which_groups);
+	    if (what&XkbIM_UseBase)
+		 sli->usesBase|= bit;
+	    if (what&XkbIM_UseLatched)
+		 sli->usesLatched|= bit;
+	    if (what&XkbIM_UseLocked)
+		 sli->usesLocked|= bit;
+	    if (what&XkbIM_UseEffective)
+		 sli->usesEffective|= bit;
+	    if (what&XkbIM_UseCompat)
+		 sli->usesCompat|= bit;
+	    if (map->ctrls)
+		 sli->usesControls|= bit;
+
+	    map->mods.mask= map->mods.real_mods;
+	    if (map->mods.vmods!=0) {
+		map->mods.mask|= XkbMaskForVMask(xkb,map->mods.vmods);
+	    }
+	}
+    }
+    sli->usedComponents= 0;
+    if (sli->usesBase)
+	sli->usedComponents|= XkbModifierBaseMask|XkbGroupBaseMask;
+    if (sli->usesLatched)
+	sli->usedComponents|= XkbModifierLatchMask|XkbGroupLatchMask;
+    if (sli->usesLocked)
+	sli->usedComponents|= XkbModifierLockMask|XkbGroupLockMask;
+    if (sli->usesEffective)
+	sli->usedComponents|= XkbModifierStateMask|XkbGroupStateMask;
+    if (sli->usesCompat)
+	sli->usedComponents|= XkbCompatStateMask;
+    return;
+}
+
+/***====================================================================***/
+
+	/*
+	 * XkbSrvLedInfoPtr
+	 * XkbAllocSrvLedInfo(dev,kf,lf,needed_parts)
+	 *
+	 * Allocates an XkbSrvLedInfoPtr for the feedback specified by either
+	 * 'kf' or 'lf' on the keyboard specified by 'dev.'
+	 *
+	 * If 'needed_parts' is non-zero, this function makes sure that any
+	 * of the parts speicified therein are allocated.
+	 */
+XkbSrvLedInfoPtr
+XkbAllocSrvLedInfo(	DeviceIntPtr		dev,
+			KbdFeedbackPtr		kf,
+			LedFeedbackPtr		lf,
+			unsigned		needed_parts)
+{
+XkbSrvLedInfoPtr	sli;
+Bool			checkAccel;
+Bool			checkNames;
+
+    sli= NULL;
+    checkAccel= checkNames= FALSE;
+    if ((kf!=NULL)&&(kf->xkb_sli==NULL)) {
+	kf->xkb_sli= sli= calloc(1, sizeof(XkbSrvLedInfoRec));
+	if (sli==NULL)
+	    return NULL; /* ALLOCATION ERROR */
+	if (dev->key && dev->key->xkbInfo)
+	     sli->flags= XkbSLI_HasOwnState;
+	else sli->flags= 0;	
+	sli->class=	KbdFeedbackClass;
+	sli->id=	kf->ctrl.id;
+	sli->fb.kf=	kf;
+
+	sli->autoState=		0;
+	sli->explicitState=	kf->ctrl.leds;
+	sli->effectiveState=	kf->ctrl.leds;
+
+	if ((kf==dev->kbdfeed) && (dev->key) && (dev->key->xkbInfo)) {
+	    XkbDescPtr	xkb;
+	    xkb= dev->key->xkbInfo->desc;
+	    sli->flags|= 		XkbSLI_IsDefault;
+	    sli->physIndicators=	xkb->indicators->phys_indicators;
+	    sli->names=			xkb->names->indicators;
+	    sli->maps=			xkb->indicators->maps;
+	    checkNames= checkAccel=	TRUE;
+	}
+	else {
+	    sli->physIndicators=	XkbAllIndicatorsMask;
+	    sli->names=			NULL;
+	    sli->maps=			NULL;
+	}
+    }
+    else if ((kf!=NULL)&&((kf->xkb_sli->flags&XkbSLI_IsDefault)!=0)) {
+	XkbDescPtr	xkb;
+	xkb= dev->key->xkbInfo->desc;
+	sli= kf->xkb_sli;
+	sli->physIndicators=	xkb->indicators->phys_indicators;
+	if (xkb->names->indicators!=sli->names) {
+	    checkNames= TRUE;
+	    sli->names= xkb->names->indicators;
+	}
+	if (xkb->indicators->maps!=sli->maps) {
+	    checkAccel= TRUE;
+	    sli->maps= xkb->indicators->maps;
+	}
+    }
+    else if ((lf!=NULL)&&(lf->xkb_sli==NULL)) {
+	lf->xkb_sli= sli= calloc(1, sizeof(XkbSrvLedInfoRec));
+	if (sli==NULL)
+	    return NULL; /* ALLOCATION ERROR */
+	if (dev->key && dev->key->xkbInfo)
+	     sli->flags= XkbSLI_HasOwnState;
+	else sli->flags= 0;	
+	sli->class=	LedFeedbackClass;
+	sli->id=	lf->ctrl.id;
+	sli->fb.lf=	lf;
+
+	sli->physIndicators=	lf->ctrl.led_mask;
+	sli->autoState=		0;
+	sli->explicitState=	lf->ctrl.led_values;
+	sli->effectiveState=	lf->ctrl.led_values;
+	sli->maps=		NULL;
+	sli->names=		NULL;
+    }
+    else
+	return NULL;
+    if ((sli->names==NULL)&&(needed_parts&XkbXI_IndicatorNamesMask))
+	sli->names= calloc(XkbNumIndicators, sizeof(Atom));
+    if ((sli->maps==NULL)&&(needed_parts&XkbXI_IndicatorMapsMask))
+	sli->maps= calloc(XkbNumIndicators, sizeof(XkbIndicatorMapRec));
+    if (checkNames) {
+	register unsigned i,bit;
+	sli->namesPresent=	0;
+	for (i=0,bit=1;i<XkbNumIndicators;i++,bit<<=1) {
+	    if (sli->names[i]!=None)
+		sli->namesPresent|= bit;
+	}
+    }
+    if (checkAccel)
+	 XkbCheckIndicatorMaps(dev,sli,XkbAllIndicatorsMask);
+    return sli;
+}
+
+void
+XkbFreeSrvLedInfo(XkbSrvLedInfoPtr sli)
+{
+    if ((sli->flags&XkbSLI_IsDefault)==0) {
+	free(sli->maps);
+	free(sli->names);
+    }
+    sli->maps= NULL;
+    sli->names= NULL;
+    free(sli);
+    return;
+}
+
+/*
+ * XkbSrvLedInfoPtr
+ * XkbCopySrvLedInfo(dev,src,kf,lf)
+ *
+ * Takes the given XkbSrvLedInfoPtr and duplicates it. A deep copy is made,
+ * thus the new copy behaves like the original one and can be freed with
+ * XkbFreeSrvLedInfo.
+ */
+XkbSrvLedInfoPtr
+XkbCopySrvLedInfo(	DeviceIntPtr		from,
+			XkbSrvLedInfoPtr	src,
+			KbdFeedbackPtr		kf,
+			LedFeedbackPtr		lf)
+{
+    XkbSrvLedInfoPtr sli_new = NULL;
+
+    if (!src)
+	goto finish;
+
+    sli_new = calloc(1, sizeof( XkbSrvLedInfoRec));
+    if (!sli_new)
+	goto finish;
+
+    memcpy(sli_new, src, sizeof(XkbSrvLedInfoRec));
+    if (sli_new->class == KbdFeedbackClass)
+	sli_new->fb.kf = kf;
+    else
+	sli_new->fb.lf = lf;
+
+    if (!(sli_new->flags & XkbSLI_IsDefault)) {
+	sli_new->names= calloc(XkbNumIndicators, sizeof(Atom));
+	sli_new->maps= calloc(XkbNumIndicators, sizeof(XkbIndicatorMapRec));
+    } /* else sli_new->names/maps is pointing to
+	dev->key->xkbInfo->desc->names->indicators;
+	dev->key->xkbInfo->desc->names->indicators; */
+
+finish:
+    return sli_new;
+}
+
+/***====================================================================***/
+
+	/*
+	 * XkbSrvLedInfoPtr
+	 * XkbFindSrvLedInfo(dev,class,id,needed_parts)
+	 *
+	 * Finds the XkbSrvLedInfoPtr for the specified 'class' and 'id'
+	 * on the device specified by 'dev.'   If the class and id specify
+	 * a valid device feedback, this function returns the existing 
+	 * feedback or allocates a new one.
+	 *
+	 */
+
+XkbSrvLedInfoPtr
+XkbFindSrvLedInfo(	DeviceIntPtr		dev,
+			unsigned		class,
+			unsigned		id,
+			unsigned		needed_parts)
+{
+XkbSrvLedInfoPtr	sli;
+
+    /* optimization to check for most common case */
+    if (((class==XkbDfltXIClass)&&(id==XkbDfltXIId))&&(dev->kbdfeed)) {
+	if (dev->kbdfeed->xkb_sli==NULL) {
+	    dev->kbdfeed->xkb_sli=
+		XkbAllocSrvLedInfo(dev,dev->kbdfeed,NULL,needed_parts);
+	}
+	return dev->kbdfeed->xkb_sli;
+    }
+
+    sli= NULL;
+    if (class==XkbDfltXIClass) {
+	if (dev->kbdfeed)	class= KbdFeedbackClass;
+	else if (dev->leds)	class= LedFeedbackClass;
+	else 			return NULL;
+    }
+    if (class==KbdFeedbackClass) {
+	KbdFeedbackPtr	kf;
+	for (kf=dev->kbdfeed;kf!=NULL;kf=kf->next) {
+	    if ((id==XkbDfltXIId)||(id==kf->ctrl.id)) {
+		if (kf->xkb_sli==NULL)
+		    kf->xkb_sli= XkbAllocSrvLedInfo(dev,kf,NULL,needed_parts);
+		sli= kf->xkb_sli;
+		break;
+	    }	
+	}
+    }
+    else if (class==LedFeedbackClass) {
+	LedFeedbackPtr	lf;
+	for (lf=dev->leds;lf!=NULL;lf=lf->next) {
+	    if ((id==XkbDfltXIId)||(id==lf->ctrl.id)) {
+		if (lf->xkb_sli==NULL)
+		    lf->xkb_sli= XkbAllocSrvLedInfo(dev,NULL,lf,needed_parts);
+		sli= lf->xkb_sli;
+		break;
+	    }	
+	}
+    }
+    if (sli) {
+	if ((sli->names==NULL)&&(needed_parts&XkbXI_IndicatorNamesMask))
+	    sli->names= calloc(XkbNumIndicators, sizeof(Atom));
+	if ((sli->maps==NULL)&&(needed_parts&XkbXI_IndicatorMapsMask))
+	    sli->maps= calloc(XkbNumIndicators, sizeof(XkbIndicatorMapRec));
+    }
+    return sli;
+}
+
+/***====================================================================***/
+
+void
+XkbFlushLedEvents(	DeviceIntPtr			dev,
+			DeviceIntPtr			kbd,
+			XkbSrvLedInfoPtr		sli,
+			xkbExtensionDeviceNotify *	ed,
+			XkbChangesPtr			changes,
+			XkbEventCausePtr		cause)
+{
+    if (changes) {
+	if (changes->indicators.state_changes)
+	    XkbDDXUpdateDeviceIndicators(dev,sli,sli->effectiveState);
+	XkbSendNotification(kbd,changes,cause);
+	memset((char *)changes, 0, sizeof(XkbChangesRec));
+
+	if (XkbAX_NeedFeedback(kbd->key->xkbInfo->desc->ctrls, XkbAX_IndicatorFBMask)) {
+		if (sli->effectiveState)
+			/* it appears that the which parameter is not used */
+			XkbDDXAccessXBeep(dev, _BEEP_LED_ON, XkbAccessXFeedbackMask);
+		else
+			XkbDDXAccessXBeep(dev, _BEEP_LED_OFF, XkbAccessXFeedbackMask);
+	}
+    }
+    if (ed) {
+	if (ed->reason) {
+	    if ((dev!=kbd)&&(ed->reason&XkbXI_IndicatorStateMask))
+		XkbDDXUpdateDeviceIndicators(dev,sli,sli->effectiveState);
+	    XkbSendExtensionDeviceNotify(dev,cause->client,ed);
+	}
+	memset((char *)ed, 0, sizeof(XkbExtensionDeviceNotify));
+    }
+    return;
+}
+
+/***====================================================================***/
+
+void
+XkbApplyLedNameChanges(	DeviceIntPtr 			dev,
+			XkbSrvLedInfoPtr		sli,
+			unsigned			changed_names,
+			xkbExtensionDeviceNotify *	ed,
+			XkbChangesPtr			changes,
+			XkbEventCausePtr		cause)
+{
+DeviceIntPtr			kbd;
+XkbChangesRec			my_changes;
+xkbExtensionDeviceNotify	my_ed;
+
+    if (changed_names==0)
+	return;
+    if (dev->key && dev->key->xkbInfo)
+	 kbd= dev;
+    else kbd= inputInfo.keyboard;
+
+    if (ed==NULL) {
+	ed= &my_ed;
+	memset((char *)ed, 0, sizeof(xkbExtensionDeviceNotify));
+    }
+    else if ((ed->reason&XkbXI_IndicatorsMask)&&
+	     ((ed->ledClass!=sli->class)||(ed->ledID!=sli->id))) {
+	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);
+    }
+
+    if ((kbd==dev)&&(sli->flags&XkbSLI_IsDefault)) { 
+	if (changes==NULL) {
+	   changes= &my_changes;
+	   memset((char *)changes, 0, sizeof(XkbChangesRec));
+	}
+	changes->names.changed|= XkbIndicatorNamesMask;
+	changes->names.changed_indicators|= changed_names;
+    }
+
+    ed->reason|=	XkbXI_IndicatorNamesMask;
+    ed->ledClass= 	sli->class;
+    ed->ledID=		sli->id;
+    ed->ledsDefined=	sli->namesPresent|sli->mapsPresent;
+    ed->ledState=	sli->effectiveState;
+    ed->unsupported=	0;
+    ed->supported=	XkbXI_AllFeaturesMask;
+
+    if (changes!=&my_changes)	changes= NULL;
+    if (ed!=&my_ed)		ed= NULL;
+    if (changes || ed)
+	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);
+    return;
+}
+/***====================================================================***/
+
+	/*
+	 * void
+	 * XkbApplyLedMapChanges(dev,sli,changed_maps,changes,cause)
+	 *
+	 * Handles all of the secondary effects of the changes to the
+	 * feedback specified by 'sli' on the device specified by 'dev.'
+	 * 
+	 * If 'changed_maps' specifies any indicators, this function generates
+	 * XkbExtensionDeviceNotify events and possibly IndicatorMapNotify
+	 * events to report the changes, and recalculates the effective
+	 * state of each indicator with a changed map.  If any indicators
+	 * change state, the server generates XkbExtensionDeviceNotify and
+	 * XkbIndicatorStateNotify events as appropriate.
+	 *
+	 * If 'changes' is non-NULL, this function updates it to reflect
+	 * any changes to the keyboard state or controls or to the 'core'
+	 * indicator names, maps, or state.   If 'changes' is NULL, this
+	 * function generates XKB events as needed to report the changes.
+	 * If 'dev' is not a keyboard device, any changes are reported
+	 * for the core keyboard.
+	 *
+	 * The 'cause' specifies the reason for the event (key event or
+	 * request) for the change, as reported in some XKB events.
+	 */
+
+void
+XkbApplyLedMapChanges(	DeviceIntPtr 			dev,
+			XkbSrvLedInfoPtr		sli,
+			unsigned			changed_maps,
+			xkbExtensionDeviceNotify *	ed,
+			XkbChangesPtr			changes,
+			XkbEventCausePtr		cause)
+{
+DeviceIntPtr			kbd;
+XkbChangesRec			my_changes;
+xkbExtensionDeviceNotify	my_ed;
+
+    if (changed_maps==0)
+	return;
+    if (dev->key && dev->key->xkbInfo)
+	 kbd= dev;
+    else kbd= inputInfo.keyboard;
+
+    if (ed==NULL) {
+	ed= &my_ed;
+	memset((char *)ed, 0, sizeof(xkbExtensionDeviceNotify));
+    }
+    else if ((ed->reason&XkbXI_IndicatorsMask)&&
+	     ((ed->ledClass!=sli->class)||(ed->ledID!=sli->id))) {
+	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);
+    }
+
+    if ((kbd==dev)&&(sli->flags&XkbSLI_IsDefault)) {
+	if (changes==NULL) {
+	    changes= &my_changes;
+	    memset((char *)changes, 0, sizeof(XkbChangesRec));
+	}
+	changes->indicators.map_changes|= changed_maps;
+    }
+
+    XkbCheckIndicatorMaps(dev,sli,changed_maps);
+
+    ed->reason|=	XkbXI_IndicatorMapsMask;
+    ed->ledClass= 	sli->class;
+    ed->ledID=		sli->id;
+    ed->ledsDefined=	sli->namesPresent|sli->mapsPresent;
+    ed->ledState=	sli->effectiveState;
+    ed->unsupported=	0;
+    ed->supported=	XkbXI_AllFeaturesMask;
+
+    XkbUpdateLedAutoState(dev,sli,changed_maps,ed,changes,cause);
+
+    if (changes!=&my_changes)	changes= NULL;
+    if (ed!=&my_ed)		ed= NULL;
+    if (changes || ed)
+	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);
+    return;
+}
+
+/***====================================================================***/
+
+void
+XkbApplyLedStateChanges(DeviceIntPtr 			dev,
+			XkbSrvLedInfoPtr		sli,
+			unsigned			changed_leds,
+			xkbExtensionDeviceNotify *	ed,
+			XkbChangesPtr			changes,
+			XkbEventCausePtr		cause)
+{
+XkbSrvInfoPtr			xkbi;
+DeviceIntPtr			kbd;
+XkbChangesRec			my_changes;
+xkbExtensionDeviceNotify	my_ed;
+register unsigned		i,bit,affected;
+XkbIndicatorMapPtr		map;
+unsigned			oldState;
+Bool				kb_changed;
+
+    if (changed_leds==0)
+	return;
+    if (dev->key && dev->key->xkbInfo)
+	 kbd= dev;
+    else kbd= inputInfo.keyboard;
+    xkbi= kbd->key->xkbInfo;
+
+    if (changes==NULL) {
+	changes= &my_changes;
+	memset((char *)changes, 0, sizeof(XkbChangesRec));
+    }
+
+    kb_changed= FALSE;
+    affected= changed_leds;
+    oldState= sli->effectiveState;
+    for (i=0,bit=1;(i<XkbNumIndicators)&&(affected);i++,bit<<=1) {
+	if ((affected&bit)==0)
+	    continue;
+	affected&= ~bit;
+	map= &sli->maps[i];
+	if (map->flags&XkbIM_NoExplicit) {
+	    sli->explicitState&= ~bit;
+	    continue;
+	}
+	if (map->flags&XkbIM_LEDDrivesKB) {
+	    Bool on= ((sli->explicitState&bit)!=0);
+	    if (XkbApplyLEDChangeToKeyboard(xkbi,map,on,changes))
+		kb_changed= TRUE;
+	}
+    }
+    sli->effectiveState= (sli->autoState|sli->explicitState);
+    affected= sli->effectiveState^oldState;
+
+    if (ed==NULL) {
+	ed= &my_ed;
+	memset((char *)ed, 0, sizeof(xkbExtensionDeviceNotify));
+    }
+    else if (affected&&(ed->reason&XkbXI_IndicatorsMask)&&
+	     ((ed->ledClass!=sli->class)||(ed->ledID!=sli->id))) {
+	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);
+    }
+
+    if ((kbd==dev)&&(sli->flags&XkbSLI_IsDefault))
+	changes->indicators.state_changes|= affected;
+    if (affected) {
+	ed->reason|=		XkbXI_IndicatorStateMask;
+	ed->ledClass= 		sli->class;
+	ed->ledID=		sli->id;
+	ed->ledsDefined=	sli->namesPresent|sli->mapsPresent;
+	ed->ledState=		sli->effectiveState;
+	ed->unsupported=	0;
+	ed->supported=		XkbXI_AllFeaturesMask;
+    }
+
+    if (kb_changed) {
+	XkbComputeDerivedState(kbd->key->xkbInfo);
+	XkbUpdateLedAutoState(dev,sli,sli->mapsPresent,ed,changes,cause);
+    }
+
+    if (changes!=&my_changes)	changes= NULL;
+    if (ed!=&my_ed)		ed= NULL;
+    if (changes || ed)
+	XkbFlushLedEvents(dev,kbd,sli,ed,changes,cause);
+    if (kb_changed)
+	XkbUpdateAllDeviceIndicators(NULL,cause);
+    return;
+}