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