sw/source/filter/ww8/rtfstringbuffer.hxx

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  */
   8
   9 #ifndef _RTFSTRINGBUFFER_HXX_
  10 #define _RTFSTRINGBUFFER_HXX_
  11
  12 #include <rtl/strbuf.hxx>
  13 #include <vector>
  14
  15 class SwGrfNode;
  16 class SwFlyFrmFmt;
  17 class RtfAttributeOutput;
  18
  19 /// Contains a buffered string or graphic during RTF export.
  20 class RtfStringBufferValue
  21 {
  22 public:
  23     /// Constructor for a string buffering.
  24     RtfStringBufferValue();
  25     /// Constructor for graphic buffering.
  26     RtfStringBufferValue(const SwFlyFrmFmt* pFlyFrmFmt, const SwGrfNode* pGrfNode);
  27     /// This version handles graphics.
  28     void makeStringAndClear(RtfAttributeOutput* pAttributeOutput);
  29     /// This one doesn't.
  30     OString makeStringAndClear();
  31     bool isGraphic() const;
  32
  33     OStringBuffer m_aBuffer;
  34     const SwFlyFrmFmt* m_pFlyFrmFmt;
  35     const SwGrfNode* m_pGrfNode;
  36 };
  37
  38 /// Wrapper around OStringBuffers, so less hexdump of graphics have to be kept in memory during RTF export.
  39 class RtfStringBuffer
  40 {
  41 public:
  42     RtfStringBuffer();
  43     /// Length of all the contained buffers.
  44     sal_Int32 getLength() const;
  45     /// Writes the contents of the buffer directly to the supplied stream.
  46     void makeStringAndClear(RtfAttributeOutput* pAttributeOutput);
  47     /// Returns the bufferent strings as a string (ignores graphic elements!)
  48     OString makeStringAndClear();
  49     /// Access to the last buffer.
  50     OStringBuffer& getLastBuffer();
  51     OStringBuffer* operator->();
  52     /// Similar to ->setLength(0), but for all buffers.
  53     void clear();
  54     /// Same as ->append(), but for graphics and without expanding contents to save memory.
  55     void append(const SwFlyFrmFmt* pFlyFrmFmt, const SwGrfNode* pGrfNode);
  56     /// Append all contained buffers and clear the argument.
  57     void appendAndClear(RtfStringBuffer& rBuf);
  58 private:
  59     typedef std::vector<RtfStringBufferValue> Values_t;
  60     Values_t m_aValues;
  61 };
  62
  63 #endif // _RTFSTRINGBUFFER_HXX_
  64
  65 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */