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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <sal/log.hxx>
#include <X11/Xlib.h>
#include <X11/XKBlib.h>
#include <unx/i18n_xkb.hxx>
SalI18N_KeyboardExtension::SalI18N_KeyboardExtension( Display* pDisplay )
: mbUseExtension(true)
, mnEventBase(0)
{
// allow user to set the default keyboard group idx or to disable the usage
// of x keyboard extension at all:
// setenv SAL_XKEYBOARDGROUP disables keyboard extension
// setenv SAL_XKEYBOARDGROUP 2 sets the keyboard group index to 2
// keyboard group index must be in [1,4], may be specified in hex or decimal
static char *pUseKeyboardExtension = getenv( "SAL_XKEYBOARDGROUP" );
if ( pUseKeyboardExtension != nullptr )
{
mbUseExtension = pUseKeyboardExtension[0] != '\0' ;
}
// query XServer support for XKB Extension,
// do not call XQueryExtension() / XInitExtension() due to possible version
// clashes !
if ( mbUseExtension )
{
int nMajorExtOpcode;
int nExtMajorVersion = XkbMajorVersion;
int nExtMinorVersion = XkbMinorVersion;
int nErrorBase = 0;
mbUseExtension = XkbQueryExtension( pDisplay,
&nMajorExtOpcode, &mnEventBase, &nErrorBase,
&nExtMajorVersion, &nExtMinorVersion ) != 0;
}
// query notification for changes of the keyboard group
if ( mbUseExtension )
{
constexpr auto XkbGroupMask = XkbGroupStateMask | XkbGroupBaseMask
| XkbGroupLatchMask | XkbGroupLockMask;
mbUseExtension = XkbSelectEventDetails( pDisplay,
XkbUseCoreKbd, XkbStateNotify, XkbGroupMask, XkbGroupMask );
}
// query initial keyboard group
if ( mbUseExtension )
{
XkbStateRec aStateRecord;
XkbGetState( pDisplay, XkbUseCoreKbd, &aStateRecord );
}
}
void
SalI18N_KeyboardExtension::Dispatch( XEvent* pEvent )
{
// must the event be handled?
if ( !mbUseExtension
|| (pEvent->type != mnEventBase) )
return;
// only handle state notify events for now, and only interested
// in group details
sal_uInt32 nXKBType = reinterpret_cast<XkbAnyEvent*>(pEvent)->xkb_type;
switch ( nXKBType )
{
case XkbStateNotify:
break;
default:
#if OSL_DEBUG_LEVEL > 1
SAL_WARN("vcl.app", "Got unrequested XkbAnyEvent "
<< std::hex << std::showbase
<< static_cast<unsigned int>(nXKBType)
<< "/" << std::dec
<< static_cast<int>(nXKBType));
#endif
break;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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