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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 : #ifndef _MODELTOVIEWHELPER_HXX
21 : #define _MODELTOVIEWHELPER_HXX
22 :
23 : #include <rtl/ustring.hxx>
24 : #include <sal/types.h>
25 : #include <vector>
26 :
27 : class SwTxtNode;
28 :
29 : /** Some helpers for converting model strings to view strings.
30 :
31 : A paragraph string does not have its fields expanded, i.e., they are
32 : represented by a special character inside the string with an additional
33 : attribute assigned to it. For some tasks (e.g., SmartTags) it is required
34 : to expand the fields to get the string as it appears in the view. Two
35 : helper functions are provided to convert model positions to view positions
36 : and vice versa.
37 :
38 : CH_TXTATR_BREAKWORD -> SwTxtNode will have field attributes associated with these
39 : . .
40 : . .
41 : . .
42 : AAAAA BBBBB # CCCCC # DDDDD
43 : | | | |
44 : | | | |
45 : | ---------
46 : | | .
47 : | | .
48 : | | .......... bounds of a hidden text character attribute
49 : ------
50 : .
51 : .
52 : .............. a range of text defined in redline region as deleted
53 :
54 : 0000: pass through gives: AAAAA BBBBB # CCCCC # DDDDD
55 : 0001: only expanding fields gives: AAAAA BBBBB foo CCCCC foo DDDDD
56 : 0010: only hiding hiddens gives: AAAAA CCCCC # DDDDD
57 : 0100: only hiding redlines gives: AAAABB # CCCCC # DDDDD
58 : 0011: expanding fields + hiding hiddens gives: AAAAA CCCC foo DDDDD
59 : 0101: expanding fields + hiding redlines gives: AAAA B foo CCCCC foo DDDDD
60 : 0110: hiding hiddens + hiding redlines gives: AAAACCCC # DDDDD
61 : 0111: expanding fields + hiding hiddens + hiding redlines gives: AAAABB foo CCCCC foo DDDDD
62 : */
63 :
64 : #define PASSTHROUGH 0x0000
65 : #define EXPANDFIELDS 0x0001
66 : #define HIDEINVISIBLE 0x0002
67 : #define HIDEREDLINED 0x0004
68 :
69 642 : class ModelToViewHelper
70 : {
71 : /** For each field in the model string, there is an entry in the conversion
72 : map. The first value of the ConversionMapEntry points to the field
73 : position in the model string, the second value points to the associated
74 : position in the view string. The last entry in the conversion map
75 : denotes the lengths of the model resp. view string.
76 : */
77 : typedef std::pair< sal_uInt32 , sal_uInt32 > ConversionMapEntry;
78 : typedef std::vector< ConversionMapEntry > ConversionMap;
79 :
80 : ConversionMap m_aMap;
81 :
82 : rtl::OUString m_aRetText;
83 :
84 : public:
85 :
86 : /** This struct defines a position in the model string.
87 :
88 : The 'main' position is given by mnPos. If there's a field located at
89 : this position, mbIsField is set and mnSubPos denotes the position inside
90 : that field.
91 : */
92 : struct ModelPosition
93 : {
94 : sal_uInt32 mnPos;
95 : sal_uInt32 mnSubPos;
96 : bool mbIsField;
97 :
98 3774 : ModelPosition() : mnPos(0), mnSubPos(0), mbIsField(false) {}
99 : };
100 :
101 : ModelToViewHelper(const SwTxtNode &rNode, int eMode = EXPANDFIELDS);
102 316 : ModelToViewHelper() //pass through filter, view == model
103 316 : {
104 316 : }
105 :
106 : /** Converts a model position into a view position
107 :
108 : @param nPos
109 : nPos denotes a position in the model string which should be
110 : converted. Note that converting model positions inside fields is
111 : not supported, therefore nPos is not of type ModelPosition.
112 :
113 : @return
114 : the position of nPos in the view string. In case the conversion
115 : could not be performed (e.g., because there is not ConversionMap or
116 : nPos is behind the last entry in the conversion map) nPos will
117 : be returned.
118 : */
119 : sal_uInt32 ConvertToViewPosition( sal_uInt32 nModelPos ) const;
120 :
121 : /** Converts a view position into a model position
122 :
123 : @param nPos
124 : nPos denotes a position in the view string which should be
125 : converted.
126 :
127 : @return
128 : the position of nPos in the model string. In case the conversion
129 : could not be performed (e.g., because there is not ConversionMap or
130 : nPos is behind the last entry in the conversion map) a model
131 : model position with mnPos = nPos and mnIsField = false will be
132 : returned.
133 : */
134 : ModelPosition ConvertToModelPosition( sal_uInt32 nViewPos ) const;
135 :
136 326 : rtl::OUString getViewText() const { return m_aRetText; }
137 : };
138 :
139 : #endif
140 :
141 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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