sc/source/filter/inc/xistring.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
  20 #pragma once
  21
  22 #include <rtl/ustring.hxx>
  23 #include "xlstring.hxx"
  24
  25 // Byte/Unicode strings =======================================================
  26
  27 class XclImpStream;
  28
  29 /** This class represents an unformatted or formatted string and provides importing from stream. */
  30 class XclImpString
  31 {
  32 public:
  33     /** Constructs an empty string. */
  34     explicit            XclImpString();
  35     /** Constructs an unformatted string. */
  36     explicit            XclImpString( OUString aString );
  37
  38     /** Reads a complete string from the passed stream. */
  39     void                Read( XclImpStream& rStrm, XclStrFlags nFlags = XclStrFlags::NONE );
  40
  41     /** Sets the passed string data. */
  42     void         SetText( const OUString& rText ) { maString = rText; }
  43     /** Sets the passed formatting buffer. */
  44     void         SetFormats( XclFormatRunVec&& rFormats ) { maFormats = std::move(rFormats); }
  45     /** Reads and appends the formatting information (run count and runs) from stream. */
  46     void         ReadFormats( XclImpStream& rStrm ) { ReadFormats( rStrm, maFormats ); }
  47     /** Reads and appends formatting runs from an OBJ or TXO record. */
  48     void         ReadObjFormats( XclImpStream& rStrm, sal_uInt16 nFormatSize ) { ReadObjFormats( rStrm, maFormats, nFormatSize ); }
  49
  50     /** Returns true, if the string is empty. */
  51     bool         IsEmpty() const { return maString.isEmpty(); }
  52     /** Returns the pure text data of the string. */
  53     const OUString& GetText() const { return maString; }
  54
  55     /** Returns true, if the string contains formatting information. */
  56     bool         IsRich() const { return !maFormats.empty(); }
  57     /** Returns the formatting run vector. */
  58     const XclFormatRunVec& GetFormats() const { return maFormats; }
  59
  60     /** Insert a formatting run to the passed format buffer. */
  61     static void         AppendFormat( XclFormatRunVec& rFormats, sal_uInt16 nChar, sal_uInt16 nFontIdx );
  62     /** Reads and appends the formatting information (run count and runs) from stream. */
  63     static void         ReadFormats( XclImpStream& rStrm, XclFormatRunVec& rFormats );
  64     /** Reads and appends nRunCount formatting runs from stream. */
  65     static void         ReadFormats( XclImpStream& rStrm, XclFormatRunVec& rFormats, sal_uInt16 nRunCount );
  66     /** Reads and appends formatting runs from an OBJ or TXO record. */
  67     static void         ReadObjFormats( XclImpStream& rStrm, XclFormatRunVec& rFormats, sal_uInt16 nFormatSize );
  68
  69 private:
  70     OUString            maString;       /// The text data of the string.
  71     XclFormatRunVec     maFormats;      /// All formatting runs.
  72 };
  73
  74 // String iterator ============================================================
  75
  76 /** Iterates over formatted string portions. */
  77 class XclImpStringIterator
  78 {
  79 public:
  80     explicit            XclImpStringIterator( const XclImpString& rString );
  81
  82     /** Returns true, if the iterator references a valid text portion. */
  83     bool         Is() const { return mnTextBeg < mrText.getLength(); }
  84     /** Returns the index of the current text portion. */
  85     size_t       GetPortionIndex() const { return mnPortion; }
  86     /** Returns the string of the current text portion. */
  87     OUString            GetPortionText() const;
  88     /** Returns the font index of the current text portion. */
  89     sal_uInt16          GetPortionFont() const;
  90
  91     /** Moves iterator to next text portion. */
  92     XclImpStringIterator& operator++();
  93
  94 private:
  95     const OUString&     mrText;         /// The processed string.
  96     const XclFormatRunVec& mrFormats;   /// The vector of formatting runs.
  97     size_t              mnPortion;      /// Current text portion.
  98     sal_Int32           mnTextBeg;      /// First character of current portion.
  99     sal_Int32           mnTextEnd;      /// First character of next portion.
 100     size_t              mnFormatsBeg;   /// Formatting run index for current portion.
 101     size_t              mnFormatsEnd;   /// Formatting run index for next portion.
 102 };
 103
 104 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */