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Diffstat (limited to 'sw/inc/modeltoviewhelper.hxx')
| -rw-r--r-- | sw/inc/modeltoviewhelper.hxx | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/sw/inc/modeltoviewhelper.hxx b/sw/inc/modeltoviewhelper.hxx new file mode 100644 index 0000000000..c045c28371 --- /dev/null +++ b/sw/inc/modeltoviewhelper.hxx @@ -0,0 +1,173 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_SW_INC_MODELTOVIEWHELPER_HXX +#define INCLUDED_SW_INC_MODELTOVIEWHELPER_HXX + +#include <rtl/ustring.hxx> +#include <sal/types.h> +#include <o3tl/typed_flags_set.hxx> +#include <vector> + +class SwTextNode; +class SwRootFrame; + +/** Some helpers for converting model strings to view strings. + + A paragraph string does not have its fields expanded, i.e., they are + represented by a special character inside the string with an additional + attribute assigned to it. For some tasks (e.g., SmartTags) it is required + to expand the fields to get the string as it appears in the view. Two + helper functions are provided to convert model positions to view positions + and vice versa. + + CH_TXTATR_BREAKWORD -> SwTextNode will have field attributes associated with these + . . + . . + . . + AAAAA BBBBB # CCCCC # DDDDD + | | | | + | | | | + | --------- + | | . + | | . + | | .......... bounds of a hidden text character attribute + ------ + . + . + .............. a range of text defined in redline region as deleted + + 0000: pass through gives: AAAAA BBBBB # CCCCC # DDDDD + 0001: only expanding fields gives: AAAAA BBBBB foo CCCCC foo DDDDD + 0010: only hiding hiddens gives: AAAAA CCCCC # DDDDD + 0100: only hiding redlines gives: AAAABB # CCCCC # DDDDD + 0011: expanding fields + hiding hiddens gives: AAAAA CCCC foo DDDDD + 0101: expanding fields + hiding redlines gives: AAAA B foo CCCCC foo DDDDD + 0110: hiding hiddens + hiding redlines gives: AAAACCCC # DDDDD + 0111: expanding fields + hiding hiddens + hiding redlines gives: AAAABB foo CCCCC foo DDDDD +*/ + +enum class ExpandMode +{ + PassThrough = 0x0000, + ExpandFields = 0x0001, + ExpandFootnote = 0x0002, + HideInvisible = 0x0004, + HideDeletions = 0x0008, + /// do not expand to content, but replace with zwsp + ReplaceMode = 0x0010, + HideFieldmarkCommands = 0x0020, +}; + +namespace o3tl +{ + template<> struct typed_flags<ExpandMode> : is_typed_flags<ExpandMode, 0x003f> {}; +} + +class ModelToViewHelper +{ + /** For each expanded/hidden portion in the model string, there is an entry in + the conversion map. The first value of the ConversionMapEntry points to + the start position in the model string, the second value points to the + associated start position in the view string. The last entry in the + conversion map denotes the lengths of the model resp. view string. + */ + struct ConversionMapEntry + { + ConversionMapEntry(sal_Int32 nModelPos, sal_Int32 nViewPos, bool bVisible) + : m_nModelPos(nModelPos) + , m_nViewPos(nViewPos) + , m_bVisible(bVisible) + { + } + sal_Int32 m_nModelPos; + sal_Int32 m_nViewPos; + bool m_bVisible; + }; + typedef std::vector< ConversionMapEntry > ConversionMap; + + ConversionMap m_aMap; + /// store positions of fields and footnotes for grammar checkers + std::vector<sal_Int32> m_FieldPositions; + std::vector<sal_Int32> m_FootnotePositions; + + OUString m_aRetText; + +public: + + /** This struct defines a position in the model string. + + The 'main' position is given by mnPos. If there's a field located at + this position, mbIsField is set and mnSubPos denotes the position inside + that field. + */ + struct ModelPosition + { + sal_Int32 mnPos; + sal_Int32 mnSubPos; + bool mbIsField; + + ModelPosition() : mnPos(0), mnSubPos(0), mbIsField(false) {} + }; + + ModelToViewHelper(const SwTextNode &rNode, SwRootFrame const* pLayout, + // defaults are appropriate for spell/grammar checking + ExpandMode eMode = ExpandMode::ExpandFields | ExpandMode::ExpandFootnote | ExpandMode::HideFieldmarkCommands | ExpandMode::ReplaceMode); + ModelToViewHelper() //pass through filter, view == model + { + } + + /** Converts a model position into a view position + + @param nPos + nPos denotes a position in the model string which should be + converted. Note that converting model positions inside fields is + not supported, therefore nPos is not of type ModelPosition. + + @return + the position of nPos in the view string. In case the conversion + could not be performed (e.g., because there is not ConversionMap or + nPos is behind the last entry in the conversion map) nPos will + be returned. + */ + sal_Int32 ConvertToViewPosition( sal_Int32 nModelPos ) const; + + /** Converts a view position into a model position + + @param nPos + nPos denotes a position in the view string which should be + converted. + + @return + the position of nPos in the model string. In case the conversion + could not be performed (e.g., because there is not ConversionMap or + nPos is behind the last entry in the conversion map) a model + model position with mnPos = nPos and mnIsField = false will be + returned. + */ + ModelPosition ConvertToModelPosition( sal_Int32 nViewPos ) const; + + const OUString& getViewText() const { return m_aRetText; } + std::vector<sal_Int32> const& getFieldPositions() const { return m_FieldPositions; } + std::vector<sal_Int32> const& getFootnotePositions() const { return m_FootnotePositions;} +}; + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |