emfreader.hxx

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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 .
 */
#pragma once
 
#include "mtftools.hxx"
 
namespace emfio
{
    class EmfReader : public MtfTools
    {
    private:
        sal_uInt32   mnRecordCount;
 
        bool        mbRecordPath : 1;
        bool        mbEMFPlus : 1;
        bool        mbEMFPlusDualMode : 1;
        bool mbReadOtherGraphicFormat = false;
        basegfx::B2DTuple maSizeHint;
        bool mbEnableEMFPlus = true;
 
        bool        ReadHeader();
        // reads and converts the rectangle
        static tools::Rectangle ReadRectangle(sal_Int32, sal_Int32, sal_Int32, sal_Int32);
 
    public:
        EmfReader(SvStream& rStreamWMF, GDIMetaFile& rGDIMetaFile);
        ~EmfReader();
 
        bool ReadEnhWMF();
        void ReadGDIComment(sal_uInt32 nCommentId);
        void ReadMultiformatsComment();
        void SetSizeHint(const basegfx::B2DTuple& rSizeHint) { maSizeHint = rSizeHint; }
        void SetEnableEMFPlus(bool bEnableEMFPlus) { mbEnableEMFPlus = bEnableEMFPlus; }
 
    private:
        template <class T> void ReadAndDrawPolyPolygon(sal_uInt32 nNextPos);
        template <class T> void ReadAndDrawPolyLine(sal_uInt32 nNextPos);
        template <class T> tools::Polygon ReadPolygon(sal_uInt32 nStartIndex, sal_uInt32 nPoints, sal_uInt32 nNextPos);
        template <class T> tools::Polygon ReadPolygonWithSkip(const bool skipFirst, sal_uInt32 nNextPos);
 
        tools::Rectangle ReadRectangle();
        void ReadEMFPlusComment(sal_uInt32 length, bool& bHaveDC);
    };
}
 
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