vcl/inc/pdf/objectcopier.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
  10 #pragma once
  11
  12 #include <map>
  13 #include <vector>
  14
  15 #include <rtl/strbuf.hxx>
  16 #include <rtl/string.hxx>
  17 #include <sal/types.h>
  18
  19 class SvMemoryStream;
  20
  21 namespace vcl
  22 {
  23 class PDFObjectContainer;
  24 namespace filter
  25 {
  26 class PDFObjectElement;
  27 class PDFElement;
  28 }
  29
  30 /// Copies objects from one PDF file into another one.
  31 class PDFObjectCopier
  32 {
  33     PDFObjectContainer& m_rContainer;
  34
  35     void copyRecursively(OStringBuffer& rLine, filter::PDFElement& rInputElement,
  36                          SvMemoryStream& rDocBuffer,
  37                          std::map<sal_Int32, sal_Int32>& rCopiedResources);
  38
  39 public:
  40     PDFObjectCopier(PDFObjectContainer& rContainer);
  41
  42     /// Copies resources of a given kind from an external page to the output,
  43     /// returning what has to be included in the new resource dictionary.
  44     OString copyExternalResources(filter::PDFObjectElement& rPage, const OString& rKind,
  45                                   std::map<sal_Int32, sal_Int32>& rCopiedResources);
  46
  47     /// Copies a single resource from an external document, returns the new
  48     /// object ID in our document.
  49     sal_Int32 copyExternalResource(SvMemoryStream& rDocBuffer, filter::PDFObjectElement& rObject,
  50                                    std::map<sal_Int32, sal_Int32>& rCopiedResources);
  51
  52     /// Copies resources of pPage into rLine.
  53     void copyPageResources(filter::PDFObjectElement* pPage, OStringBuffer& rLine);
  54
  55     void copyPageResources(filter::PDFObjectElement* pPage, OStringBuffer& rLine,
  56                            std::map<sal_Int32, sal_Int32>& rCopiedResources);
  57
  58     /// Copies page one or more page streams from rContentStreams into rStream.
  59     static sal_Int32 copyPageStreams(std::vector<filter::PDFObjectElement*>& rContentStreams,
  60                                      SvMemoryStream& rStream, bool& rCompressed);
  61 };
  62 }
  63
  64 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */