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"
24 const QString GlobalSettings::Key_View_AlwaysZoomToFit = "View_AlwaysZoomToFit";
25 const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG";
26 const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
28 std::multimap< QString, std::function<void(QVariant)> > GlobalSettings::callbacks_;
29 bool GlobalSettings::tracking_ = false;
30 std::map<QString, QVariant> GlobalSettings::tracked_changes_;
32 GlobalSettings::GlobalSettings() :
35 beginGroup("Settings");
38 void GlobalSettings::register_change_handler(const QString key,
39 std::function<void(QVariant)> cb)
41 callbacks_.emplace(key, cb);
44 void GlobalSettings::setValue(const QString &key, const QVariant &value)
46 // Save previous value if we're tracking changes,
47 // not altering an already-existing saved setting
49 tracked_changes_.emplace(key, QSettings::value(key));
51 QSettings::setValue(key, value);
53 // Call all registered callbacks for this key
54 auto range = callbacks_.equal_range(key);
56 for (auto it = range.first; it != range.second; it++)
60 void GlobalSettings::start_tracking()
63 tracked_changes_.clear();
66 void GlobalSettings::stop_tracking()
69 tracked_changes_.clear();
72 void GlobalSettings::undo_tracked_changes()
76 for (auto entry : tracked_changes_)
77 setValue(entry.first, entry.second);
79 tracked_changes_.clear();