2 * This file is part of the PulseView project.
4 * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
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.
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.
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/>.
20 #include "globalsettings.hpp"
28 const QString GlobalSettings::Key_View_AlwaysZoomToFit = "View_AlwaysZoomToFit";
29 const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG";
30 const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
31 const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints";
33 multimap< QString, function<void(QVariant)> > GlobalSettings::callbacks_;
34 bool GlobalSettings::tracking_ = false;
35 map<QString, QVariant> GlobalSettings::tracked_changes_;
37 GlobalSettings::GlobalSettings() :
40 beginGroup("Settings");
43 void GlobalSettings::register_change_handler(const QString key,
44 function<void(QVariant)> cb)
46 callbacks_.emplace(key, cb);
49 void GlobalSettings::setValue(const QString &key, const QVariant &value)
51 // Save previous value if we're tracking changes,
52 // not altering an already-existing saved setting
54 tracked_changes_.emplace(key, QSettings::value(key));
56 QSettings::setValue(key, value);
58 // Call all registered callbacks for this key
59 auto range = callbacks_.equal_range(key);
61 for (auto it = range.first; it != range.second; it++)
65 void GlobalSettings::start_tracking()
68 tracked_changes_.clear();
71 void GlobalSettings::stop_tracking()
74 tracked_changes_.clear();
77 void GlobalSettings::undo_tracked_changes()
81 for (auto entry : tracked_changes_)
82 setValue(entry.first, entry.second);
84 tracked_changes_.clear();