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annotate libgui/src/documentation.h @ 25985:49ffd0e0242d

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enable resetting doc browser zoom level even when zooming with mouse wheel * documentation.cc (documentation_browser::wheelEvent): reimplement mouse wheel event and, in case of active control modifier, call own zooming function which are keeping track of the zoom level * documentation.h: new protected method for reimplemented wheel event
author Torsten <mttl@mailbox.org>
date Tue, 30 Oct 2018 22:50:40 +0100
parents a7cc5b7a3d22
children 390d59717711
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1 /*
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2
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3 Copyright (C) 2018 Torsten <mttl@maibox.org>
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4
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5 This file is part of Octave.
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6
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7 Octave is free software: you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by
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9 the Free Software Foundation, either version 3 of the License, or
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10 (at your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <https://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (octave_documentation_h)
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24 #define octave_documentation_h 1
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25
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26 #include <QComboBox>
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27 #include <QWidget>
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28 #include <QSettings>
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29 #include <QShortcut>
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30 #include <QSplitter>
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31 #include <QTextBrowser>
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32 #include <QtHelp/QHelpEngine>
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33
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34 namespace octave
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35 {
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36 //! Documentation browser derived from Textbrowser
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37
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38 class documentation_browser : public QTextBrowser
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39 {
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40 Q_OBJECT
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41
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42 public:
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43
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44 documentation_browser (QHelpEngine *help_engine, QWidget *parent = nullptr);
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45 ~documentation_browser (void);
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46
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47 virtual QVariant loadResource (int type, const QUrl &url);
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48
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49 public slots:
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50
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51 void handle_index_clicked (const QUrl& url,
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52 const QString& keyword = QString ());
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53 void notice_settings (const QSettings *settings);
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54
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55 //! Zooming in and out while taking care of the zoom level
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56 //!@{
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57 void zoom_in (void);
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58 void zoom_out (void);
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59 void zoom_normal (void);
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60 //!@}
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61
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62 protected:
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63
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64 void wheelEvent (QWheelEvent *we);
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65
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66 private:
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67
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68 QHelpEngine *m_help_engine;
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69
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70 //! Store the current zoom level
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71 int m_zoom_level;
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72
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73 //! Minimal and maximal zoom level avoiding calling
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74 //! zoom_in and zoom_out without actually zooming but
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75 //! with changing the stored zoom level
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76 enum
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77 {
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78 min_zoom_level = -5,
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79 max_zoom_level = 10
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80 };
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81 };
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82
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83
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84 //! The documentaiton main class derived from QSplitter
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85
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86 class documentation : public QSplitter
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87 {
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88 Q_OBJECT
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89
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90 public:
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91
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92 documentation (QWidget *parent = nullptr);
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93 ~documentation (void);
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94
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95 public slots:
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96
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97 void notice_settings (const QSettings *settings);
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98
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99 void copyClipboard (void);
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100 void pasteClipboard (void);
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101 void selectAll (void);
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102
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103 void load_ref (const QString & name);
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104 void registerDoc (const QString & name);
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105 void unregisterDoc (const QString & name);
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106
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107 private slots:
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108
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109 void global_search (void);
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110 void global_search_started (void);
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111 void global_search_finished (int hits);
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112 void filter_update (const QString& expression);
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113 void filter_update_history (void);
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114 void find_forward (void);
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115 void find_backward (void);
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116 void find_forward_from_anchor (const QString& text);
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117 void record_anchor_position (void);
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118 void handle_cursor_position_change (void);
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119
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120 signals:
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121
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122 void show_single_result (const QUrl);
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123
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124 private:
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125
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126 QHelpEngine *m_help_engine;
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127 QString m_internal_search;
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128 documentation_browser *m_doc_browser;
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129 QLineEdit *m_find_line_edit;
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130 int m_search_anchor_position;
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131 QComboBox *m_filter;
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132 QString m_collection;
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133
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134 QShortcut *m_show_shortcut;
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135 QShortcut *m_findnext_shortcut;
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136 QShortcut *m_findprev_shortcut;
25976
a7cc5b7a3d22 provide shortcuts for zooming into the doc browser (bug #54877)
Torsten <mttl@mailbox.org>
parents: 25609
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137 QShortcut *m_zoom_in_shortcut;
a7cc5b7a3d22 provide shortcuts for zooming into the doc browser (bug #54877)
Torsten <mttl@mailbox.org>
parents: 25609
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138 QShortcut *m_zoom_out_shortcut;
a7cc5b7a3d22 provide shortcuts for zooming into the doc browser (bug #54877)
Torsten <mttl@mailbox.org>
parents: 25609
diff changeset
139 QShortcut *m_zoom_normal_shortcut;
25042
ba5af45bbfc4 documentation widget based on qt help engine (bug #53006)
Torsten <mttl@mailbox.org>
parents:
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140 };
ba5af45bbfc4 documentation widget based on qt help engine (bug #53006)
Torsten <mttl@mailbox.org>
parents:
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141 }
ba5af45bbfc4 documentation widget based on qt help engine (bug #53006)
Torsten <mttl@mailbox.org>
parents:
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142
ba5af45bbfc4 documentation widget based on qt help engine (bug #53006)
Torsten <mttl@mailbox.org>
parents:
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143 #endif