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1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef PULSEVIEW_GLOBALSETTINGS_HPP | |
21 | #define PULSEVIEW_GLOBALSETTINGS_HPP | |
22 | ||
23 | #include <functional> | |
24 | #include <map> | |
25 | ||
26 | #include <QSettings> | |
27 | #include <QString> | |
28 | #include <QVariant> | |
29 | ||
30 | namespace pv { | |
31 | ||
32 | class GlobalSettings : public QSettings | |
33 | { | |
34 | Q_OBJECT | |
35 | ||
36 | public: | |
37 | static const QString Key_View_AlwaysZoomToFit; | |
38 | static const QString Key_View_ColouredBG; | |
39 | ||
40 | public: | |
41 | GlobalSettings(); | |
42 | ||
43 | static void register_change_handler(const QString key, | |
44 | std::function<void(QVariant)> cb); | |
45 | ||
46 | void setValue(const QString& key, const QVariant& value); | |
47 | ||
2cca9ebf SA |
48 | /** |
49 | * Begins the tracking of changes. All changes will | |
50 | * be recorded until stop_tracking() is called. | |
51 | * The change tracking is global and doesn't support nesting. | |
52 | */ | |
53 | void start_tracking(); | |
54 | ||
55 | /** | |
56 | * Ends the tracking of changes without any changes to the settings. | |
57 | */ | |
58 | void stop_tracking(); | |
59 | ||
60 | /** | |
61 | * Ends the tracking of changes, undoing the changes since the | |
62 | * change tracking began. | |
63 | */ | |
64 | void undo_tracked_changes(); | |
65 | ||
bf9f1268 SA |
66 | private: |
67 | static std::multimap< QString, std::function<void(QVariant)> > callbacks_; | |
2cca9ebf SA |
68 | |
69 | static bool tracking_; | |
70 | static std::map<QString, QVariant> tracked_changes_; | |
bf9f1268 SA |
71 | }; |
72 | ||
73 | } // namespace pv | |
74 | ||
75 | #endif // PULSEVIEW_GLOBALSETTINGS_HPP |