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"
22 #include <QApplication>
24 #include <QFontMetrics>
33 const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq";
34 const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq";
35 const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG";
36 const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
37 const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints";
38 const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid";
39 const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight";
40 const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable";
42 multimap< QString, function<void(QVariant)> > GlobalSettings::callbacks_;
43 bool GlobalSettings::tracking_ = false;
44 map<QString, QVariant> GlobalSettings::tracked_changes_;
46 GlobalSettings::GlobalSettings() :
49 beginGroup("Settings");
52 void GlobalSettings::set_defaults_where_needed()
54 // Enable zoom-to-fit after acquisition by default
55 if (!contains(Key_View_ZoomToFitAfterAcq))
56 setValue(Key_View_ZoomToFitAfterAcq, true);
58 // Enable coloured trace backgrounds by default
59 if (!contains(Key_View_ColouredBG))
60 setValue(Key_View_ColouredBG, true);
62 // Enable showing sampling points by default
63 if (!contains(Key_View_ShowSamplingPoints))
64 setValue(Key_View_ShowSamplingPoints, true);
66 if (!contains(Key_View_DefaultDivHeight))
67 setValue(Key_View_DefaultDivHeight,
68 3 * QFontMetrics(QApplication::font()).height());
71 void GlobalSettings::register_change_handler(const QString key,
72 function<void(QVariant)> cb)
74 callbacks_.emplace(key, cb);
77 void GlobalSettings::setValue(const QString &key, const QVariant &value)
79 // Save previous value if we're tracking changes,
80 // not altering an already-existing saved setting
82 tracked_changes_.emplace(key, QSettings::value(key));
84 QSettings::setValue(key, value);
86 // Call all registered callbacks for this key
87 auto range = callbacks_.equal_range(key);
89 for (auto it = range.first; it != range.second; it++)
93 void GlobalSettings::start_tracking()
96 tracked_changes_.clear();
99 void GlobalSettings::stop_tracking()
102 tracked_changes_.clear();
105 void GlobalSettings::undo_tracked_changes()
109 for (auto entry : tracked_changes_)
110 setValue(entry.first, entry.second);
112 tracked_changes_.clear();
115 void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v)
117 const GVariantType *var_type = g_variant_get_type(v);
118 char *var_type_str = g_variant_type_dup_string(var_type);
120 QByteArray var_data = QByteArray((const char*)g_variant_get_data(v),
121 g_variant_get_size(v));
123 settings.setValue("value", var_data);
124 settings.setValue("type", var_type_str);
126 g_free(var_type_str);
129 GVariant* GlobalSettings::restore_gvariant(QSettings &settings)
131 QString raw_type = settings.value("type").toString();
132 GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());
134 QByteArray data = settings.value("value").toByteArray();
136 gpointer var_data = g_memdup((gconstpointer)data.constData(),
139 GVariant *value = g_variant_new_from_data(var_type, var_data,
140 data.size(), false, g_free, var_data);
142 g_variant_type_free(var_type);