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>
23 #include <QFontMetrics>
31 const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq";
32 const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq";
33 const QString GlobalSettings::Key_View_TriggerIsZeroTime = "View_TriggerIsZeroTime";
34 const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG";
35 const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
36 const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints";
37 const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid";
38 const QString GlobalSettings::Key_View_ConversionThresholdDispMode = "View_ConversionThresholdDispMode";
39 const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight";
40 const QString GlobalSettings::Key_View_DefaultLogicHeight = "View_DefaultLogicHeight";
41 const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable";
42 const QString GlobalSettings::Key_Log_BufferSize = "Log_BufferSize";
44 vector<GlobalSettingsInterface*> GlobalSettings::callbacks_;
45 bool GlobalSettings::tracking_ = false;
46 map<QString, QVariant> GlobalSettings::tracked_changes_;
48 GlobalSettings::GlobalSettings() :
51 beginGroup("Settings");
54 void GlobalSettings::set_defaults_where_needed()
56 // Enable zoom-to-fit after acquisition by default
57 if (!contains(Key_View_ZoomToFitAfterAcq))
58 setValue(Key_View_ZoomToFitAfterAcq, true);
60 // Enable coloured trace backgrounds by default
61 if (!contains(Key_View_ColouredBG))
62 setValue(Key_View_ColouredBG, true);
64 // Enable showing sampling points by default
65 if (!contains(Key_View_ShowSamplingPoints))
66 setValue(Key_View_ShowSamplingPoints, true);
68 if (!contains(Key_View_DefaultDivHeight))
69 setValue(Key_View_DefaultDivHeight,
70 3 * QFontMetrics(QApplication::font()).height());
72 if (!contains(Key_View_DefaultLogicHeight))
73 setValue(Key_View_DefaultLogicHeight,
74 2 * QFontMetrics(QApplication::font()).height());
76 // Default to 500 lines of backlog
77 if (!contains(Key_Log_BufferSize))
78 setValue(Key_Log_BufferSize, 500);
81 void GlobalSettings::add_change_handler(GlobalSettingsInterface *cb)
83 callbacks_.push_back(cb);
86 void GlobalSettings::remove_change_handler(GlobalSettingsInterface *cb)
88 for (auto cb_it = callbacks_.begin(); cb_it != callbacks_.end(); cb_it++)
90 callbacks_.erase(cb_it);
95 void GlobalSettings::setValue(const QString &key, const QVariant &value)
97 // Save previous value if we're tracking changes,
98 // not altering an already-existing saved setting
100 tracked_changes_.emplace(key, QSettings::value(key));
102 QSettings::setValue(key, value);
104 // Call all registered callbacks
105 for (GlobalSettingsInterface *cb : callbacks_)
106 cb->on_setting_changed(key, value);
109 void GlobalSettings::start_tracking()
112 tracked_changes_.clear();
115 void GlobalSettings::stop_tracking()
118 tracked_changes_.clear();
121 void GlobalSettings::undo_tracked_changes()
125 for (auto entry : tracked_changes_)
126 setValue(entry.first, entry.second);
128 tracked_changes_.clear();
131 void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v)
133 const GVariantType *var_type = g_variant_get_type(v);
134 char *var_type_str = g_variant_type_dup_string(var_type);
136 QByteArray var_data = QByteArray((const char*)g_variant_get_data(v),
137 g_variant_get_size(v));
139 settings.setValue("value", var_data);
140 settings.setValue("type", var_type_str);
142 g_free(var_type_str);
145 GVariant* GlobalSettings::restore_gvariant(QSettings &settings)
147 QString raw_type = settings.value("type").toString();
148 GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());
150 QByteArray data = settings.value("value").toByteArray();
152 gpointer var_data = g_memdup((gconstpointer)data.constData(),
155 GVariant *value = g_variant_new_from_data(var_type, var_data,
156 data.size(), false, g_free, var_data);
158 g_variant_type_free(var_type);