1 | /* $Id: UIRichTextString.h 76581 2019-01-01 06:24:57Z vboxsync $ */
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2 | /** @file
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3 | * VBox Qt GUI - UIRichTextString class declaration.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2015-2019 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 | #ifndef FEQT_INCLUDED_SRC_objects_UIRichTextString_h
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19 | #define FEQT_INCLUDED_SRC_objects_UIRichTextString_h
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20 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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21 | # pragma once
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22 | #endif
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23 |
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24 | /* Qt includes: */
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25 | #include <QTextLayout>
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26 |
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27 | /* GUI includes: */
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28 | #include "UILibraryDefs.h"
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29 |
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30 | /** Rich text string implementation which parses the passed QString
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31 | * and holds it as the tree of the formatted rich text blocks. */
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32 | class SHARED_LIBRARY_STUFF UIRichTextString
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33 | {
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34 | public:
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35 |
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36 | /** Rich text block types. */
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37 | enum Type
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38 | {
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39 | Type_None,
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40 | Type_Anchor,
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41 | Type_Bold,
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42 | Type_Italic,
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43 | };
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44 |
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45 | /** Constructs empty rich text string.
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46 | * @param enmType Brings the type of <i>this</i> rich text block. */
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47 | UIRichTextString(Type enmType = Type_None);
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48 |
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49 | /** Constructs rich text string.
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50 | * @param strString Brings the string being parsed and held as the tree of rich text blocks.
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51 | * @param enmType Brings the type of <i>this</i> rich text block.
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52 | * @param strStringMeta Brings the string containing meta data describing <i>this</i> rich text block. */
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53 | UIRichTextString(const QString &strString, Type enmType = Type_None, const QString &strStringMeta = QString());
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54 |
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55 | /** Destructor rich text string. */
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56 | virtual ~UIRichTextString() /* override */;
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57 |
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58 | /** Returns the QString representation. */
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59 | QString toString() const;
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60 |
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61 | /** Returns the list of existing format ranges appropriate for QTextLayout.
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62 | * @param iShift Brings the shift of <i>this</i> rich text block accordig to it's root. */
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63 | QList<QTextLayout::FormatRange> formatRanges(int iShift = 0) const;
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64 |
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65 | /** Defines the anchor to highlight in <i>this</i> rich text block and in it's children. */
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66 | void setHoveredAnchor(const QString &strHoveredAnchor);
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67 |
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68 | private:
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69 |
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70 | /** Parses the string. */
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71 | void parse();
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72 |
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73 | /** Used to populate const static map of known patterns.
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74 | * @note Keep it sync with the method below - #populatePatternHasMeta(). */
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75 | static QMap<Type, QString> populatePatterns();
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76 | /** Used to populate const static map of meta flags for the known patterns.
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77 | * @note Keep it sync with the method above - #populatePatterns(). */
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78 | static QMap<Type, bool> populatePatternHasMeta();
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79 |
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80 | /** Recursively searching for the maximum level of the passed pattern.
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81 | * @param strString Brings the string to check for the current (recursively advanced) pattern in,
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82 | * @param strPattern Brings the etalon pattern to recursively advance the current pattern with,
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83 | * @param strCurrentPattern Brings the current (recursively advanced) pattern to check for the presence of,
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84 | * @param iCurrentLevel Brings the current level of the recursively advanced pattern. */
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85 | static int searchForMaxLevel(const QString &strString, const QString &strPattern,
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86 | const QString &strCurrentPattern, int iCurrentLevel = 0);
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87 |
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88 | /** Recursively composing the pattern of the maximum level.
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89 | * @param strPattern Brings the etalon pattern to recursively update the current pattern with,
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90 | * @param strCurrentPattern Brings the current (recursively advanced) pattern,
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91 | * @param iCurrentLevel Brings the amount of the levels left to recursively advance current pattern. */
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92 | static QString composeFullPattern(const QString &strPattern,
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93 | const QString &strCurrentPattern, int iCurrentLevel);
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94 |
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95 | /** Composes the QTextCharFormat correpoding to passed @a enmType. */
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96 | static QTextCharFormat textCharFormat(Type enmType);
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97 |
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98 | /** Holds the type of <i>this</i> rich text block. */
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99 | Type m_enmType;
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100 | /** Holds the string of <i>this</i> rich text block. */
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101 | QString m_strString;
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102 | /** Holds the string meta data of <i>this</i> rich text block. */
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103 | QString m_strStringMeta;
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104 | /** Holds the children of <i>this</i> rich text block. */
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105 | QMap<int, UIRichTextString*> m_strings;
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106 |
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107 | /** Holds the anchor of <i>this</i> rich text block. */
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108 | QString m_strAnchor;
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109 | /** Holds the anchor to highlight in <i>this</i> rich text block and in it's children. */
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110 | QString m_strHoveredAnchor;
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111 |
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112 | /** Holds the <i>any</i> string pattern. */
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113 | static const QString s_strAny;
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114 | /** Holds the map of known patterns. */
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115 | static const QMap<Type, QString> s_patterns;
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116 | /** Holds the map of meta flags for the known patterns. */
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117 | static const QMap<Type, bool> s_doPatternHasMeta;
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118 | };
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119 |
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120 | #endif /* !FEQT_INCLUDED_SRC_objects_UIRichTextString_h */
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