155 lines
4.8 KiB
C++
155 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "atkwrapper.hxx"
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#include <com/sun/star/accessibility/XAccessibleValue.hpp>
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#include <cmath>
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#include <string.h>
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using namespace ::com::sun::star;
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/// @throws uno::RuntimeException
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static css::uno::Reference<css::accessibility::XAccessibleValue>
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getValue( AtkValue *pValue )
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{
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AtkObjectWrapper *pWrap = ATK_OBJECT_WRAPPER( pValue );
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if( pWrap )
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{
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if( !pWrap->mpValue.is() )
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{
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pWrap->mpValue.set(pWrap->mpContext, css::uno::UNO_QUERY);
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}
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return pWrap->mpValue;
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}
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return css::uno::Reference<css::accessibility::XAccessibleValue>();
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}
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static void anyToGValue( const uno::Any& aAny, GValue *pValue )
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{
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// FIXME: expand to lots of types etc.
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double aDouble=0;
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aAny >>= aDouble;
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memset( pValue, 0, sizeof( GValue ) );
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g_value_init( pValue, G_TYPE_DOUBLE );
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g_value_set_double( pValue, aDouble );
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}
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extern "C" {
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static void
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value_wrapper_get_current_value( AtkValue *value,
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GValue *gval )
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{
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try {
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css::uno::Reference<css::accessibility::XAccessibleValue> pValue
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= getValue( value );
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if( pValue.is() )
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anyToGValue( pValue->getCurrentValue(), gval );
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}
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catch(const uno::Exception&) {
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g_warning( "Exception in getCurrentValue()" );
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}
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}
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static void
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value_wrapper_get_maximum_value( AtkValue *value,
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GValue *gval )
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{
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try {
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css::uno::Reference<css::accessibility::XAccessibleValue> pValue
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= getValue( value );
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if( pValue.is() )
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anyToGValue( pValue->getMaximumValue(), gval );
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}
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catch(const uno::Exception&) {
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g_warning( "Exception in getCurrentValue()" );
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}
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}
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static void
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value_wrapper_get_minimum_value( AtkValue *value,
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GValue *gval )
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{
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try {
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css::uno::Reference<css::accessibility::XAccessibleValue> pValue
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= getValue( value );
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if( pValue.is() )
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anyToGValue( pValue->getMinimumValue(), gval );
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}
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catch(const uno::Exception&) {
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g_warning( "Exception in getCurrentValue()" );
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}
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}
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static gboolean
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value_wrapper_set_current_value( AtkValue *value,
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const GValue *gval )
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{
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try {
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css::uno::Reference<css::accessibility::XAccessibleValue> pValue
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= getValue( value );
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if( pValue.is() )
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{
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double aDouble = g_value_get_double( gval );
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// Different types of numerical values for XAccessibleValue are possible.
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// If current value has an integer type, also use that for the new value, to make
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// sure underlying implementations expecting that can handle the value properly.
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const css::uno::Any aCurrentValue = pValue->getCurrentValue();
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if (aCurrentValue.getValueTypeClass() == css::uno::TypeClass::TypeClass_LONG)
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{
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const sal_Int32 nValue = std::round<sal_Int32>(aDouble);
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return pValue->setCurrentValue(css::uno::Any(nValue));
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}
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else if (aCurrentValue.getValueTypeClass() == css::uno::TypeClass::TypeClass_HYPER)
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{
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const sal_Int64 nValue = std::round<sal_Int64>(aDouble);
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return pValue->setCurrentValue(css::uno::Any(nValue));
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}
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return pValue->setCurrentValue( uno::Any(aDouble) );
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}
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}
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catch(const uno::Exception&) {
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g_warning( "Exception in getCurrentValue()" );
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}
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return FALSE;
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}
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} // extern "C"
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void
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valueIfaceInit (gpointer iface_, gpointer)
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{
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auto const iface = static_cast<AtkValueIface *>(iface_);
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g_return_if_fail (iface != nullptr);
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iface->get_current_value = value_wrapper_get_current_value;
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iface->get_maximum_value = value_wrapper_get_maximum_value;
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iface->get_minimum_value = value_wrapper_get_minimum_value;
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iface->set_current_value = value_wrapper_set_current_value;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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