sw/source/core/text/itratr.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 <o3tl/deleter.hxx>
  22 #include "atrhndl.hxx"
  23 #include <swfont.hxx>
  24
  25 namespace sw { struct MergedPara; }
  26 class SwTextAttr;
  27 class SwTextNode;
  28 class SwRedlineItr;
  29 class SwViewShell;
  30 class SwTextFrame;
  31
  32 class SwAttrIter
  33 {
  34     friend class SwFontSave;
  35 protected:
  36
  37     SwAttrHandler m_aAttrHandler;
  38     SwViewShell *m_pViewShell;
  39     SwFont* m_pFont;
  40     SwScriptInfo* m_pScriptInfo;
  41
  42 private:
  43     VclPtr<OutputDevice> m_pLastOut;
  44     /// count currently open hints, redlines, ext-input
  45     short m_nChgCnt;
  46     std::unique_ptr<SwRedlineItr, o3tl::default_delete<SwRedlineItr>> m_pRedline;
  47     /// current iteration index in HintStarts
  48     size_t m_nStartIndex;
  49     /// current iteration index in HintEnds
  50     size_t m_nEndIndex;
  51     /// current iteration index in text node
  52     sal_Int32 m_nPosition;
  53     sal_uInt8 m_nPropFont;
  54     o3tl::enumarray<SwFontScript, const void*> m_aFontCacheIds;
  55     o3tl::enumarray<SwFontScript, sal_uInt16> m_aFontIdx;
  56     /// input: the current text node
  57     const SwTextNode* m_pTextNode;
  58     sw::MergedPara const* m_pMergedPara;
  59
  60     void SeekFwd(sal_Int32 nOldPos, sal_Int32 nNewPos);
  61     void SetFnt( SwFont* pNew ) { m_pFont = pNew; }
  62     void InitFontAndAttrHandler(
  63         SwTextNode const& rPropsNode, SwTextNode const& rTextNode,
  64         std::u16string_view aText, bool const* pbVertLayout,
  65         bool const* pbVertLayoutLRBT);
  66
  67 protected:
  68     void Chg( SwTextAttr const *pHt );
  69     void Rst( SwTextAttr const *pHt );
  70     void CtorInitAttrIter(SwTextNode& rTextNode, SwScriptInfo& rScrInf, SwTextFrame const* pFrame = nullptr);
  71     explicit SwAttrIter(SwTextNode const * pTextNode);
  72
  73 public:
  74     /// All subclasses of this always have a SwTextFrame passed to the
  75     /// constructor, but SwAttrIter itself may be created without a
  76     /// SwTextFrame in certain special cases via this ctor here
  77     SwAttrIter(SwTextNode& rTextNode, SwScriptInfo& rScrInf, SwTextFrame const*const pFrame = nullptr);
  78
  79     virtual ~SwAttrIter();
  80
  81     SwRedlineItr *GetRedln() { return m_pRedline.get(); }
  82     // The parameter returns the position of the next change before or at the
  83     // char position.
  84     TextFrameIndex GetNextAttr() const;
  85     /// Enables the attributes used at char pos nPos in the logical font
  86     bool Seek(TextFrameIndex nPos);
  87     // Creates the font at the specified position via Seek() and checks
  88     // if it's a symbol font.
  89     bool IsSymbol(TextFrameIndex nPos);
  90
  91     /** Executes ChgPhysFnt if Seek() returns true
  92      *  and change font to merge character border with neighbours.
  93     **/
  94     bool SeekAndChgAttrIter(TextFrameIndex nPos, OutputDevice* pOut);
  95     bool SeekStartAndChgAttrIter( OutputDevice* pOut, const bool bParaFont );
  96
  97     // Do we possibly have nasty things like footnotes?
  98     bool MaybeHasHints() const;
  99
 100     // Returns the attribute for a position
 101     SwTextAttr *GetAttr(TextFrameIndex nPos) const;
 102
 103     SwFont *GetFnt() { return m_pFont; }
 104     const SwFont *GetFnt() const { return m_pFont; }
 105
 106     sal_uInt8 GetPropFont() const { return m_nPropFont; }
 107     void SetPropFont( const sal_uInt8 nNew ) { m_nPropFont = nNew; }
 108
 109     SwAttrHandler& GetAttrHandler() { return m_aAttrHandler; }
 110 };
 111
 112 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */