emfio/inc/emfreader.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #pragma once
  20
  21 #include "mtftools.hxx"
  22
  23 namespace emfio
  24 {
  25     class EmfReader : public MtfTools
  26     {
  27     private:
  28         sal_uInt32   mnRecordCount;
  29
  30         bool        mbRecordPath : 1;
  31         bool        mbEMFPlus : 1;
  32         bool        mbEMFPlusDualMode : 1;
  33         /// Another format is read already, can ignore actual EMF data.
  34         bool mbReadOtherGraphicFormat = false;
  35         basegfx::B2DTuple maSizeHint;
  36         bool mbEnableEMFPlus = true;
  37
  38         bool        ReadHeader();
  39         // reads and converts the rectangle
  40         static tools::Rectangle ReadRectangle(sal_Int32, sal_Int32, sal_Int32, sal_Int32);
  41
  42     public:
  43         EmfReader(SvStream& rStreamWMF, GDIMetaFile& rGDIMetaFile);
  44         ~EmfReader();
  45
  46         bool ReadEnhWMF();
  47         void ReadGDIComment(sal_uInt32 nCommentId);
  48         /// Parses EMR_COMMENT_MULTIFORMATS.
  49         void ReadMultiformatsComment();
  50         void SetSizeHint(const basegfx::B2DTuple& rSizeHint) { maSizeHint = rSizeHint; }
  51         void SetEnableEMFPlus(bool bEnableEMFPlus) { mbEnableEMFPlus = bEnableEMFPlus; }
  52
  53     private:
  54         template <class T> void ReadAndDrawPolyPolygon(sal_uInt32 nNextPos);
  55         template <class T> void ReadAndDrawPolyLine(sal_uInt32 nNextPos);
  56         template <class T> tools::Polygon ReadPolygon(sal_uInt32 nStartIndex, sal_uInt32 nPoints, sal_uInt32 nNextPos);
  57         template <class T> tools::Polygon ReadPolygonWithSkip(const bool skipFirst, sal_uInt32 nNextPos);
  58
  59         tools::Rectangle ReadRectangle();
  60         void ReadEMFPlusComment(sal_uInt32 length, bool& bHaveDC);
  61     };
  62 }
  63
  64 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */