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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 "atkwrapper.hxx"
#include <com/sun/star/accessibility/XAccessibleValue.hpp>
#include <cmath>
#include <string.h>
using namespace ::com::sun::star;
/// @throws uno::RuntimeException
static css::uno::Reference<css::accessibility::XAccessibleValue>
getValue( AtkValue *pValue )
{
AtkObjectWrapper *pWrap = ATK_OBJECT_WRAPPER( pValue );
if( pWrap )
{
if( !pWrap->mpValue.is() )
{
pWrap->mpValue.set(pWrap->mpContext, css::uno::UNO_QUERY);
}
return pWrap->mpValue;
}
return css::uno::Reference<css::accessibility::XAccessibleValue>();
}
static void anyToGValue( const uno::Any& aAny, GValue *pValue )
{
// FIXME: expand to lots of types etc.
double aDouble=0;
aAny >>= aDouble;
memset( pValue, 0, sizeof( GValue ) );
g_value_init( pValue, G_TYPE_DOUBLE );
g_value_set_double( pValue, aDouble );
}
extern "C" {
static void
value_wrapper_get_current_value( AtkValue *value,
GValue *gval )
{
try {
css::uno::Reference<css::accessibility::XAccessibleValue> pValue
= getValue( value );
if( pValue.is() )
anyToGValue( pValue->getCurrentValue(), gval );
}
catch(const uno::Exception&) {
g_warning( "Exception in getCurrentValue()" );
}
}
static void
value_wrapper_get_maximum_value( AtkValue *value,
GValue *gval )
{
try {
css::uno::Reference<css::accessibility::XAccessibleValue> pValue
= getValue( value );
if( pValue.is() )
anyToGValue( pValue->getMaximumValue(), gval );
}
catch(const uno::Exception&) {
g_warning( "Exception in getCurrentValue()" );
}
}
static void
value_wrapper_get_minimum_value( AtkValue *value,
GValue *gval )
{
try {
css::uno::Reference<css::accessibility::XAccessibleValue> pValue
= getValue( value );
if( pValue.is() )
anyToGValue( pValue->getMinimumValue(), gval );
}
catch(const uno::Exception&) {
g_warning( "Exception in getCurrentValue()" );
}
}
static gboolean
value_wrapper_set_current_value( AtkValue *value,
const GValue *gval )
{
try {
css::uno::Reference<css::accessibility::XAccessibleValue> pValue
= getValue( value );
if( pValue.is() )
{
double aDouble = g_value_get_double( gval );
// Different types of numerical values for XAccessibleValue are possible.
// If current value has an integer type, also use that for the new value, to make
// sure underlying implementations expecting that can handle the value properly.
const css::uno::Any aCurrentValue = pValue->getCurrentValue();
if (aCurrentValue.getValueTypeClass() == css::uno::TypeClass::TypeClass_LONG)
{
const sal_Int32 nValue = std::round<sal_Int32>(aDouble);
return pValue->setCurrentValue(css::uno::Any(nValue));
}
else if (aCurrentValue.getValueTypeClass() == css::uno::TypeClass::TypeClass_HYPER)
{
const sal_Int64 nValue = std::round<sal_Int64>(aDouble);
return pValue->setCurrentValue(css::uno::Any(nValue));
}
return pValue->setCurrentValue( uno::Any(aDouble) );
}
}
catch(const uno::Exception&) {
g_warning( "Exception in getCurrentValue()" );
}
return FALSE;
}
} // extern "C"
void
valueIfaceInit (AtkValueIface *iface)
{
g_return_if_fail (iface != nullptr);
iface->get_current_value = value_wrapper_get_current_value;
iface->get_maximum_value = value_wrapper_get_maximum_value;
iface->get_minimum_value = value_wrapper_get_minimum_value;
iface->set_current_value = value_wrapper_set_current_value;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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