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-rw-r--r--xorg-server/xkb/xkbLEDs.c937
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diff --git a/xorg-server/xkb/xkbLEDs.c b/xorg-server/xkb/xkbLEDs.c
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+++ b/xorg-server/xkb/xkbLEDs.c
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+/************************************************************
+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>
+#define NEED_EVENTS 1
+#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;
+ bzero((char *)ed,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;
+ bzero((char *)changes,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|= XkbXI_IndicatorStateMask;
+ 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;
+
+ bzero((char *)&changes,sizeof(XkbChangesRec));
+ bzero((char *)&ed,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)
+ dev= inputInfo.keyboard;
+
+ 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 (!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= _XkbTypedCalloc(1,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->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= _XkbTypedCalloc(1,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;
+ }
+ if ((sli->names==NULL)&&(needed_parts&XkbXI_IndicatorNamesMask))
+ sli->names= _XkbTypedCalloc(XkbNumIndicators,Atom);
+ if ((sli->maps==NULL)&&(needed_parts&XkbXI_IndicatorMapsMask))
+ sli->maps= _XkbTypedCalloc(XkbNumIndicators,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) {
+ if (sli->maps) _XkbFree(sli->maps);
+ if (sli->names) _XkbFree(sli->names);
+ }
+ sli->maps= NULL;
+ sli->names= NULL;
+ _XkbFree(sli);
+ return;
+}
+
+
+/***====================================================================***/
+
+ /*
+ * 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->names==NULL)&&(needed_parts&XkbXI_IndicatorNamesMask))
+ sli->names= _XkbTypedCalloc(XkbNumIndicators,Atom);
+ if ((sli->maps==NULL)&&(needed_parts&XkbXI_IndicatorMapsMask))
+ sli->maps= _XkbTypedCalloc(XkbNumIndicators,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);
+ bzero((char *)changes,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 && (ed->reason)) {
+ if ((dev!=kbd)&&(ed->reason&XkbXI_IndicatorStateMask))
+ XkbDDXUpdateDeviceIndicators(dev,sli,sli->effectiveState);
+ XkbSendExtensionDeviceNotify(dev,cause->client,ed);
+ }
+ bzero((char *)ed,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;
+ bzero((char *)ed,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;
+ bzero((char *)changes,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;
+ bzero((char *)ed,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;
+ bzero((char *)changes,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|= XkbXI_IndicatorMapsMask;
+ 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;
+ bzero((char *)changes,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;
+ bzero((char *)ed,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|= XkbXI_IndicatorStateMask;
+ 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;
+}