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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 | #include "globalsettings.hpp" | |
21 | ||
22 | using std::function; | |
23 | using std::map; | |
24 | using std::multimap; | |
25 | ||
26 | namespace pv { | |
27 | ||
28 | const QString GlobalSettings::Key_View_AlwaysZoomToFit = "View_AlwaysZoomToFit"; | |
29 | const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq"; | |
30 | const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG"; | |
31 | const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling"; | |
32 | const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints"; | |
33 | const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid"; | |
34 | const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable"; | |
35 | ||
36 | multimap< QString, function<void(QVariant)> > GlobalSettings::callbacks_; | |
37 | bool GlobalSettings::tracking_ = false; | |
38 | map<QString, QVariant> GlobalSettings::tracked_changes_; | |
39 | ||
40 | GlobalSettings::GlobalSettings() : | |
41 | QSettings() | |
42 | { | |
43 | beginGroup("Settings"); | |
44 | } | |
45 | ||
46 | void GlobalSettings::set_defaults_where_needed() | |
47 | { | |
48 | // Enable zoom-to-fit after acquisition by default | |
49 | if (!contains(Key_View_ZoomToFitAfterAcq)) | |
50 | setValue(Key_View_ZoomToFitAfterAcq, true); | |
51 | ||
52 | // Enable coloured trace backgrounds by default | |
53 | if (!contains(Key_View_ColouredBG)) | |
54 | setValue(Key_View_ColouredBG, true); | |
55 | ||
56 | // Enable showing sampling points by default | |
57 | if (!contains(Key_View_ShowSamplingPoints)) | |
58 | setValue(Key_View_ShowSamplingPoints, true); | |
59 | } | |
60 | ||
61 | void GlobalSettings::register_change_handler(const QString key, | |
62 | function<void(QVariant)> cb) | |
63 | { | |
64 | callbacks_.emplace(key, cb); | |
65 | } | |
66 | ||
67 | void GlobalSettings::setValue(const QString &key, const QVariant &value) | |
68 | { | |
69 | // Save previous value if we're tracking changes, | |
70 | // not altering an already-existing saved setting | |
71 | if (tracking_) | |
72 | tracked_changes_.emplace(key, QSettings::value(key)); | |
73 | ||
74 | QSettings::setValue(key, value); | |
75 | ||
76 | // Call all registered callbacks for this key | |
77 | auto range = callbacks_.equal_range(key); | |
78 | ||
79 | for (auto it = range.first; it != range.second; it++) | |
80 | it->second(value); | |
81 | } | |
82 | ||
83 | void GlobalSettings::start_tracking() | |
84 | { | |
85 | tracking_ = true; | |
86 | tracked_changes_.clear(); | |
87 | } | |
88 | ||
89 | void GlobalSettings::stop_tracking() | |
90 | { | |
91 | tracking_ = false; | |
92 | tracked_changes_.clear(); | |
93 | } | |
94 | ||
95 | void GlobalSettings::undo_tracked_changes() | |
96 | { | |
97 | tracking_ = false; | |
98 | ||
99 | for (auto entry : tracked_changes_) | |
100 | setValue(entry.first, entry.second); | |
101 | ||
102 | tracked_changes_.clear(); | |
103 | } | |
104 | ||
105 | } // namespace pv |