sw/source/core/text/atrhndl.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 #define NUM_ATTRIBUTE_STACKS 45
  22
  23 #include <vector>
  24 #include <swfntcch.hxx>
  25
  26 class SwTextAttr;
  27 class SwAttrSet;
  28 class IDocumentSettingAccess;
  29 class SwViewShell;
  30 class SfxPoolItem;
  31 extern const sal_uInt8 StackPos[];
  32
  33 /**
  34  * Used by Attribute Iterators to organize attributes on stacks to
  35  * find the valid attribute in each category
  36  */
  37 class SwAttrHandler
  38 {
  39 private:
  40     std::vector<const SwTextAttr*> m_aAttrStack[NUM_ATTRIBUTE_STACKS]; // stack collection
  41     const SfxPoolItem* m_pDefaultArray[ NUM_DEFAULT_VALUES ];
  42     const IDocumentSettingAccess* m_pIDocumentSettingAccess;
  43     const SwViewShell* m_pShell;
  44
  45     // This is the base font for the paragraph. It is stored in order to have
  46     // a template, if we have to restart the attribute evaluation
  47     std::optional<SwFont> m_oFnt;
  48
  49     bool m_bVertLayout;
  50     bool m_bVertLayoutLRBT;
  51
  52     const SwTextAttr* GetTop(sal_uInt16 nStack);
  53     void RemoveFromStack(sal_uInt16 nWhich, const SwTextAttr& rAttr);
  54
  55     // change font according to pool item
  56     void FontChg(const SfxPoolItem& rItem, SwFont& rFnt, bool bPush );
  57
  58     // push attribute to specified stack, returns true, if attribute has
  59     // been pushed on top of stack (important for stacks containing different
  60     // attributes with different priority and redlining)
  61     bool Push( const SwTextAttr& rAttr, const SfxPoolItem& rItem );
  62
  63     // apply top attribute on stack to font
  64     void ActivateTop( SwFont& rFnt, sal_uInt16 nStackPos );
  65
  66 public:
  67     // Ctor
  68     SwAttrHandler();
  69     ~SwAttrHandler();
  70
  71     // set default attributes to values in rAttrSet or from cache
  72     void Init( const SwAttrSet& rAttrSet,
  73                const IDocumentSettingAccess& rIDocumentSettingAccess );
  74     void Init( const SfxPoolItem** pPoolItem, const SwAttrSet* pAttrSet,
  75                const IDocumentSettingAccess& rIDocumentSettingAccess,
  76                const SwViewShell* pShell, SwFont& rFnt,
  77                bool bVertLayout, bool bVertLayoutLRBT );
  78
  79     bool IsVertLayout() const { return m_bVertLayout; }
  80
  81     // remove everything from internal stacks, keep default data
  82     void Reset( );
  83
  84     // insert specified attribute and change font
  85     void PushAndChg( const SwTextAttr& rAttr, SwFont& rFnt );
  86
  87     // remove specified attribute and reset font
  88     void PopAndChg( const SwTextAttr& rAttr, SwFont& rFnt );
  89     void Pop( const SwTextAttr& rAttr );
  90
  91     // apply script dependent attributes
  92     // void ChangeScript( SwFont& rFnt, const sal_uInt8 nScr );
  93
  94     // do not call these if you only used the small init function
  95     inline void ResetFont( SwFont& rFnt ) const;
  96     inline const SwFont* GetFont() const;
  97
  98     void GetDefaultAscentAndHeight(SwViewShell const * pShell,
  99                                    OutputDevice const & rOut,
 100                                    sal_uInt16& nAscent,
 101                                    sal_uInt16& nHeight) const;
 102 };
 103
 104 inline void SwAttrHandler::ResetFont( SwFont& rFnt ) const
 105 {
 106     OSL_ENSURE(m_oFnt, "ResetFont without a font");
 107     if (m_oFnt)
 108         rFnt = *m_oFnt;
 109 };
 110
 111 inline const SwFont* SwAttrHandler::GetFont() const
 112 {
 113     return m_oFnt ? &*m_oFnt : nullptr;
 114 };
 115
 116
 117 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */