    /* -*- 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 <sal/config.h>
    #include <sal/log.hxx>

    #include <basegfx/vector/b2ivector.hxx>
    #include <com/sun/star/uno/Any.hxx>
    #include <com/sun/star/uno/Sequence.hxx>
    #include <comphelper/anytostring.hxx>
    #include <cppuhelper/exc_hlp.hxx>
    #include <osl/diagnose.h>

    #include "dx_config.hxx"

    using namespace com::sun::star;

    namespace dxcanvas
    {
        DXCanvasItem::DXCanvasItem() :
            ConfigItem(
                "Office.Canvas/DXCanvas",
                ConfigItemMode::ImmediateUpdate ),
            maValues(),
            maMaxTextureSize(),
            mbBlacklistCurrentDevice(false),
            mbValuesDirty(false)
        {
            try
            {
                uno::Sequence< OUString > aName { "DeviceBlacklist" };

                uno::Sequence< uno::Any > aProps( GetProperties( aName ));
                uno::Sequence< sal_Int32 > aValues;

                if( aProps.getLength() > 0 &&
                    (aProps[0] >>= aValues) )
                {
                    const sal_Int32* pValues = aValues.getConstArray();
                    const sal_Int32 nNumEntries( aValues.getLength()*sizeof(sal_Int32)/sizeof(DeviceInfo) );
                    for( sal_Int32 i=0; i<nNumEntries; ++i )
                    {
                        DeviceInfo aInfo;
                        aInfo.nVendorId         = *pValues++;
                        aInfo.nDeviceId         = *pValues++;
                        aInfo.nDeviceSubSysId   = *pValues++;
                        aInfo.nDeviceRevision   = *pValues++;
                        aInfo.nDriverId         = *pValues++;
                        aInfo.nDriverVersion    = *pValues++;
                        aInfo.nDriverSubVersion = *pValues++;
                        aInfo.nDriverBuildId    = *pValues++;
                        maValues.insert(aInfo);
                    }
                }

                aName[0] = "BlacklistCurrentDevice";
                aProps = GetProperties( aName );
                if( aProps.getLength() > 0 )
                    aProps[0] >>= mbBlacklistCurrentDevice;

                aName[0] = "MaxTextureSize";
                aProps = GetProperties( aName );
                if( aProps.getLength() > 0 )
                    maMaxTextureSize.reset( aProps[0].get<sal_Int32>() );
                else
                    maMaxTextureSize.reset();
            }
            catch( const uno::Exception& )
            {
                SAL_WARN( "canvas", comphelper::anyToString( cppu::getCaughtException() ) );
            }
        }

        DXCanvasItem::~DXCanvasItem()
        {
            if( !mbValuesDirty )
                return;

            try
            {
                uno::Sequence< sal_Int32 > aValues( sizeof(DeviceInfo)/sizeof(sal_Int32)*maValues.size() );

                sal_Int32* pValues = aValues.getArray();
                for( const auto& rValueSet : maValues )
                {
                    const DeviceInfo& rInfo( rValueSet );
                    *pValues++ = rInfo.nVendorId;
                    *pValues++ = rInfo.nDeviceId;
                    *pValues++ = rInfo.nDeviceSubSysId;
                    *pValues++ = rInfo.nDeviceRevision;
                    *pValues++ = rInfo.nDriverId;
                    *pValues++ = rInfo.nDriverVersion;
                    *pValues++ = rInfo.nDriverSubVersion;
                    *pValues++ = rInfo.nDriverBuildId;
                }

                PutProperties({"DeviceBlacklist"}, {css::uno::Any(aValues)});
            }
            catch( const uno::Exception& )
            {
                SAL_WARN( "canvas", comphelper::anyToString( cppu::getCaughtException() ) );
            }
        }

        void DXCanvasItem::Notify( const css::uno::Sequence<OUString>& ) {}
        void DXCanvasItem::ImplCommit() {}

        bool DXCanvasItem::isDeviceUsable( const DeviceInfo& rDeviceInfo ) const
        {
            return maValues.find(rDeviceInfo) == maValues.end();
        }

        bool DXCanvasItem::isBlacklistCurrentDevice() const
        {
            return mbBlacklistCurrentDevice;
        }

        void DXCanvasItem::blacklistDevice( const DeviceInfo& rDeviceInfo )
        {
            mbValuesDirty = true;
            maValues.insert(rDeviceInfo);
        }

        void DXCanvasItem::adaptMaxTextureSize( basegfx::B2IVector& io_maxTextureSize ) const
        {
            if( maMaxTextureSize )
            {
                io_maxTextureSize.setX(
                    std::min( *maMaxTextureSize,
                              io_maxTextureSize.getX() ));
                io_maxTextureSize.setY(
                    std::min( *maMaxTextureSize,
                              io_maxTextureSize.getY() ));
            }
        }

    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

↑ V1019 Compound assignment expression 'aProps[0] >>= aValues' is used inside condition.