pv/globalsettings.cpp - external/sigrok.org/pulseview - Git at Google

 /*
  * This file is part of the PulseView project.
  *
  * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */

 #include <boost/archive/text_iarchive.hpp>
 #include <boost/archive/text_oarchive.hpp>
 #include <boost/serialization/serialization.hpp>

 #include <QApplication>
 #include <QColor>
 #include <QDebug>
 #include <QFile>
 #include <QFontMetrics>
 #include <QPixmapCache>
 #include <QString>
 #include <QStyle>
 #include <QtGlobal>

 #include "globalsettings.hpp"
 #include "application.hpp"

 using std::map;
 using std::pair;
 using std::string;
 using std::stringstream;
 using std::vector;

 namespace pv {

 const vector< pair<QString, QString> > Themes {
 	{"None" , ""},
 	{"QDarkStyleSheet", ":/themes/qdarkstyle/style.qss"},
 	{"DarkStyle", ":/themes/darkstyle/darkstyle.qss"}
 };

 const QString GlobalSettings::Key_General_Language = "General_Language";
 const QString GlobalSettings::Key_General_Theme = "General_Theme";
 const QString GlobalSettings::Key_General_Style = "General_Style";
 const QString GlobalSettings::Key_General_SaveWithSetup = "General_SaveWithSetup";
 const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq";
 const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq";
 const QString GlobalSettings::Key_View_TriggerIsZeroTime = "View_TriggerIsZeroTime";
 const QString GlobalSettings::Key_View_ColoredBG = "View_ColoredBG";
 const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
 const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints";
 const QString GlobalSettings::Key_View_FillSignalHighAreas = "View_FillSignalHighAreas";
 const QString GlobalSettings::Key_View_FillSignalHighAreaColor = "View_FillSignalHighAreaColor";
 const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid";
 const QString GlobalSettings::Key_View_ConversionThresholdDispMode = "View_ConversionThresholdDispMode";
 const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight";
 const QString GlobalSettings::Key_View_DefaultLogicHeight = "View_DefaultLogicHeight";
 const QString GlobalSettings::Key_View_ShowHoverMarker = "View_ShowHoverMarker";
 const QString GlobalSettings::Key_View_SnapDistance = "View_SnapDistance";
 const QString GlobalSettings::Key_View_CursorFillColor = "View_CursorFillColor";
 const QString GlobalSettings::Key_View_CursorShowFrequency = "View_CursorShowFrequency";
 const QString GlobalSettings::Key_View_CursorShowInterval = "View_CursorShowInterval";
 const QString GlobalSettings::Key_View_CursorShowSamples = "View_CursorShowSamples";
 const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable";
 const QString GlobalSettings::Key_Dec_ExportFormat = "Dec_ExportFormat";
 const QString GlobalSettings::Key_Dec_AlwaysShowAllRows = "Dec_AlwaysShowAllRows";
 const QString GlobalSettings::Key_Log_BufferSize = "Log_BufferSize";
 const QString GlobalSettings::Key_Log_NotifyOfStacktrace = "Log_NotifyOfStacktrace";

 vector<GlobalSettingsInterface*> GlobalSettings::callbacks_;
 bool GlobalSettings::tracking_ = false;
 bool GlobalSettings::is_dark_theme_ = false;
 map<QString, QVariant> GlobalSettings::tracked_changes_;
 QString GlobalSettings::default_style_;
 QPalette GlobalSettings::default_palette_;

 GlobalSettings::GlobalSettings() :
 	QSettings()
 {
 	beginGroup("Settings");
 }

 void GlobalSettings::save_internal_defaults()
 {
 	default_style_ = qApp->style()->objectName();
 	if (default_style_.isEmpty())
 		default_style_ = "fusion";

 	default_palette_ = QApplication::palette();
 }

 void GlobalSettings::set_defaults_where_needed()
 {
 	if (!contains(Key_General_Language)) {
 		// Determine and set default UI language
 		QString language = QLocale().uiLanguages().first();  // May return e.g. en-Latn-US  // clazy:exclude=detaching-temporary
 		language = language.split("-").first();

 		setValue(Key_General_Language, language);
 		apply_language();
 	}

 	// Use no theme by default
 	if (!contains(Key_General_Theme))
 		setValue(Key_General_Theme, 0);
 	if (!contains(Key_General_Style))
 		setValue(Key_General_Style, "");

 	// Save setup with .sr files by default
 	if (!contains(Key_General_SaveWithSetup))
 		setValue(Key_General_SaveWithSetup, true);

 	// Enable zoom-to-fit after acquisition by default
 	if (!contains(Key_View_ZoomToFitAfterAcq))
 		setValue(Key_View_ZoomToFitAfterAcq, true);

 	// Enable colored trace backgrounds by default
 	if (!contains(Key_View_ColoredBG))
 		setValue(Key_View_ColoredBG, true);

 	// Enable showing sampling points by default
 	if (!contains(Key_View_ShowSamplingPoints))
 		setValue(Key_View_ShowSamplingPoints, true);

 	// Enable filling logic signal high areas by default
 	if (!contains(Key_View_FillSignalHighAreas))
 		setValue(Key_View_FillSignalHighAreas, true);

 	if (!contains(Key_View_DefaultDivHeight))
 		setValue(Key_View_DefaultDivHeight,
 		3 * QFontMetrics(QApplication::font()).height());

 	if (!contains(Key_View_DefaultLogicHeight))
 		setValue(Key_View_DefaultLogicHeight,
 		2 * QFontMetrics(QApplication::font()).height());

 	if (!contains(Key_View_ShowHoverMarker))
 		setValue(Key_View_ShowHoverMarker, true);

 	if (!contains(Key_View_SnapDistance))
 		setValue(Key_View_SnapDistance, 15);

 	if (!contains(Key_View_CursorShowInterval))
 		setValue(Key_View_CursorShowInterval, true);

 	if (!contains(Key_View_CursorShowFrequency))
 		setValue(Key_View_CursorShowFrequency, true);

 	// %c was used for the row name in the past so we need to transition such users
 	if (!contains(Key_Dec_ExportFormat) ||
 		value(Key_Dec_ExportFormat).toString() == "%s %d: %c: %1")
 		setValue(Key_Dec_ExportFormat, "%s %d: %r: %1");

 	// Default to 500 lines of backlog
 	if (!contains(Key_Log_BufferSize))
 		setValue(Key_Log_BufferSize, 500);

 	// Notify user of existing stack trace by default
 	if (!contains(Key_Log_NotifyOfStacktrace))
 		setValue(Key_Log_NotifyOfStacktrace, true);

 	// Default theme is bright, so use its color scheme if undefined
 	if (!contains(Key_View_CursorFillColor))
 		set_bright_theme_default_colors();
 }

 void GlobalSettings::set_bright_theme_default_colors()
 {
 	setValue(Key_View_FillSignalHighAreaColor,
 		QColor(0, 0, 0, 5 * 256 / 100).rgba());

 	setValue(Key_View_CursorFillColor,
 		QColor(220, 231, 243).rgba());
 }

 void GlobalSettings::set_dark_theme_default_colors()
 {
 	setValue(Key_View_FillSignalHighAreaColor,
 		QColor(188, 188, 188, 9 * 256 / 100).rgba());

 	setValue(Key_View_CursorFillColor,
 		QColor(60, 60, 60).rgba());
 }

 bool GlobalSettings::current_theme_is_dark()
 {
 	return is_dark_theme_;
 }

 void GlobalSettings::apply_theme()
 {
 	QString theme_name    = Themes.at(value(Key_General_Theme).toInt()).first;
 	QString resource_name = Themes.at(value(Key_General_Theme).toInt()).second;

 	if (!resource_name.isEmpty()) {
 		QFile file(resource_name);
 		file.open(QFile::ReadOnly | QFile::Text);
 		qApp->setStyleSheet(file.readAll());
 	} else
 		qApp->setStyleSheet("");

 	qApp->setPalette(default_palette_);

 	const QString style = value(Key_General_Style).toString();
 	if (style.isEmpty())
 		qApp->setStyle(default_style_);
 	else
 		qApp->setStyle(style);

 	is_dark_theme_ = false;

 	if (theme_name.compare("QDarkStyleSheet") == 0) {
 		QPalette dark_palette;
 		dark_palette.setColor(QPalette::Window, QColor(53, 53, 53));
 		dark_palette.setColor(QPalette::WindowText, Qt::white);
 		dark_palette.setColor(QPalette::Base, QColor(42, 42, 42));
 		dark_palette.setColor(QPalette::Dark, QColor(35, 35, 35));
 		dark_palette.setColor(QPalette::Highlight, QColor(42, 130, 218));
 		qApp->setPalette(dark_palette);
 		is_dark_theme_ = true;
 	} else if (theme_name.compare("DarkStyle") == 0) {
 		QPalette dark_palette;
 		dark_palette.setColor(QPalette::Window, QColor(53, 53, 53));
 		dark_palette.setColor(QPalette::WindowText, Qt::white);
 		dark_palette.setColor(QPalette::Disabled, QPalette::WindowText, QColor(127, 127, 127));
 		dark_palette.setColor(QPalette::Base, QColor(42, 42, 42));
 		dark_palette.setColor(QPalette::AlternateBase, QColor(66, 66, 66));
 		dark_palette.setColor(QPalette::ToolTipBase, Qt::white);
 		dark_palette.setColor(QPalette::ToolTipText, QColor(53, 53, 53));
 		dark_palette.setColor(QPalette::Text, Qt::white);
 		dark_palette.setColor(QPalette::Disabled, QPalette::Text, QColor(127, 127, 127));
 		dark_palette.setColor(QPalette::Dark, QColor(35, 35, 35));
 		dark_palette.setColor(QPalette::Shadow, QColor(20, 20, 20));
 		dark_palette.setColor(QPalette::Button, QColor(53, 53, 53));
 		dark_palette.setColor(QPalette::ButtonText, Qt::white);
 		dark_palette.setColor(QPalette::Disabled, QPalette::ButtonText, QColor(127, 127, 127));
 		dark_palette.setColor(QPalette::BrightText, Qt::red);
 		dark_palette.setColor(QPalette::Link, QColor(42, 130, 218));
 		dark_palette.setColor(QPalette::Highlight, QColor(42, 130, 218));
 		dark_palette.setColor(QPalette::Disabled, QPalette::Highlight, QColor(80, 80, 80));
 		dark_palette.setColor(QPalette::HighlightedText, Qt::white);
 		dark_palette.setColor(QPalette::Disabled, QPalette::HighlightedText, QColor(127, 127, 127));
 		qApp->setPalette(dark_palette);
 		is_dark_theme_ = true;
 	}

 	QPixmapCache::clear();
 }

 void GlobalSettings::apply_language()
 {
 	Application* a = qobject_cast<Application*>(QApplication::instance());
 	a->switch_language(value(Key_General_Language).toString());
 }

 void GlobalSettings::add_change_handler(GlobalSettingsInterface *cb)
 {
 	callbacks_.push_back(cb);
 }

 void GlobalSettings::remove_change_handler(GlobalSettingsInterface *cb)
 {
 	for (auto cb_it = callbacks_.begin(); cb_it != callbacks_.end(); cb_it++)
 		if (*cb_it == cb) {
 			callbacks_.erase(cb_it);
 			break;
 		}
 }

 void GlobalSettings::setValue(const QString &key, const QVariant &value)
 {
 	// Save previous value if we're tracking changes,
 	// not altering an already-existing saved setting
 	if (tracking_)
 		tracked_changes_.emplace(key, QSettings::value(key));

 	QSettings::setValue(key, value);

 	// TODO Emulate noquote()
 	qDebug() << "Setting" << key << "changed to" << value;

 	// Call all registered callbacks
 	for (GlobalSettingsInterface *cb : callbacks_)
 		cb->on_setting_changed(key, value);
 }

 void GlobalSettings::start_tracking()
 {
 	tracking_ = true;
 	tracked_changes_.clear();
 }

 void GlobalSettings::stop_tracking()
 {
 	tracking_ = false;
 	tracked_changes_.clear();
 }

 void GlobalSettings::undo_tracked_changes()
 {
 	tracking_ = false;

 	for (auto& entry : tracked_changes_)
 		setValue(entry.first, entry.second);

 	tracked_changes_.clear();
 }

 void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v)
 {
 	const GVariantType *var_type = g_variant_get_type(v);
 	char *var_type_str = g_variant_type_dup_string(var_type);

 	QByteArray var_data = QByteArray((const char*)g_variant_get_data(v),
 		g_variant_get_size(v));

 	settings.setValue("value", var_data);
 	settings.setValue("type", var_type_str);

 	g_free(var_type_str);
 }

 GVariant* GlobalSettings::restore_gvariant(QSettings &settings)
 {
 	QString raw_type = settings.value("type").toString();
 	GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());

 	QByteArray data = settings.value("value").toByteArray();

 	gpointer var_data = g_memdup((gconstpointer)data.constData(),
 		(guint)data.size());

 	GVariant *value = g_variant_new_from_data(var_type, var_data,
 		data.size(), false, g_free, var_data);

 	g_variant_type_free(var_type);

 	return value;
 }

 void GlobalSettings::store_variantbase(QSettings &settings, Glib::VariantBase v)
 {
 	const QByteArray var_data = QByteArray((const char*)v.get_data(), v.get_size());

 	settings.setValue("value", var_data);
 	settings.setValue("type", QString::fromStdString(v.get_type_string()));
 }

 Glib::VariantBase GlobalSettings::restore_variantbase(QSettings &settings)
 {
 	QString raw_type = settings.value("type").toString();
 	GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());

 	QByteArray data = settings.value("value").toByteArray();

 	gpointer var_data = g_memdup((gconstpointer)data.constData(),
 		(guint)data.size());

 	GVariant *value = g_variant_new_from_data(var_type, var_data,
 		data.size(), false, g_free, var_data);

 	Glib::VariantBase ret_val = Glib::VariantBase(value, true);

 	g_variant_type_free(var_type);
 	g_variant_unref(value);

 	return ret_val;
 }

 void GlobalSettings::store_timestamp(QSettings &settings, const char *name, const pv::util::Timestamp &ts)
 {
 	stringstream ss;
 	boost::archive::text_oarchive oa(ss);
 	oa << boost::serialization::make_nvp(name, ts);
 	settings.setValue(name, QString::fromStdString(ss.str()));
 }

 pv::util::Timestamp GlobalSettings::restore_timestamp(QSettings &settings, const char *name)
 {
 	util::Timestamp result;
 	stringstream ss;
 	ss << settings.value(name).toString().toStdString();

 	try {
 		boost::archive::text_iarchive ia(ss);
 		ia >> boost::serialization::make_nvp(name, result);
 	} catch (boost::archive::archive_exception&) {
 		qDebug() << "Could not restore setting" << name;
 	}

 	return result;
 }

 } // namespace pv
	/*
	* This file is part of the PulseView project.
	*
	* Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	*/

	#include <boost/archive/text_iarchive.hpp>
	#include <boost/archive/text_oarchive.hpp>
	#include <boost/serialization/serialization.hpp>

	#include <QApplication>
	#include <QColor>
	#include <QDebug>
	#include <QFile>
	#include <QFontMetrics>
	#include <QPixmapCache>
	#include <QString>
	#include <QStyle>
	#include <QtGlobal>

	#include "globalsettings.hpp"
	#include "application.hpp"

	using std::map;
	using std::pair;
	using std::string;
	using std::stringstream;
	using std::vector;

	namespace pv {

	const vector< pair<QString, QString> > Themes {
	{"None" , ""},
	{"QDarkStyleSheet", ":/themes/qdarkstyle/style.qss"},
	{"DarkStyle", ":/themes/darkstyle/darkstyle.qss"}
	};

	const QString GlobalSettings::Key_General_Language = "General_Language";
	const QString GlobalSettings::Key_General_Theme = "General_Theme";
	const QString GlobalSettings::Key_General_Style = "General_Style";
	const QString GlobalSettings::Key_General_SaveWithSetup = "General_SaveWithSetup";
	const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq";
	const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq";
	const QString GlobalSettings::Key_View_TriggerIsZeroTime = "View_TriggerIsZeroTime";
	const QString GlobalSettings::Key_View_ColoredBG = "View_ColoredBG";
	const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
	const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints";
	const QString GlobalSettings::Key_View_FillSignalHighAreas = "View_FillSignalHighAreas";
	const QString GlobalSettings::Key_View_FillSignalHighAreaColor = "View_FillSignalHighAreaColor";
	const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid";
	const QString GlobalSettings::Key_View_ConversionThresholdDispMode = "View_ConversionThresholdDispMode";
	const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight";
	const QString GlobalSettings::Key_View_DefaultLogicHeight = "View_DefaultLogicHeight";
	const QString GlobalSettings::Key_View_ShowHoverMarker = "View_ShowHoverMarker";
	const QString GlobalSettings::Key_View_SnapDistance = "View_SnapDistance";
	const QString GlobalSettings::Key_View_CursorFillColor = "View_CursorFillColor";
	const QString GlobalSettings::Key_View_CursorShowFrequency = "View_CursorShowFrequency";
	const QString GlobalSettings::Key_View_CursorShowInterval = "View_CursorShowInterval";
	const QString GlobalSettings::Key_View_CursorShowSamples = "View_CursorShowSamples";
	const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable";
	const QString GlobalSettings::Key_Dec_ExportFormat = "Dec_ExportFormat";
	const QString GlobalSettings::Key_Dec_AlwaysShowAllRows = "Dec_AlwaysShowAllRows";
	const QString GlobalSettings::Key_Log_BufferSize = "Log_BufferSize";
	const QString GlobalSettings::Key_Log_NotifyOfStacktrace = "Log_NotifyOfStacktrace";

	vector<GlobalSettingsInterface*> GlobalSettings::callbacks_;
	bool GlobalSettings::tracking_ = false;
	bool GlobalSettings::is_dark_theme_ = false;
	map<QString, QVariant> GlobalSettings::tracked_changes_;
	QString GlobalSettings::default_style_;
	QPalette GlobalSettings::default_palette_;

	GlobalSettings::GlobalSettings() :
	QSettings()
	{
	beginGroup("Settings");
	}

	void GlobalSettings::save_internal_defaults()
	{
	default_style_ = qApp->style()->objectName();
	if (default_style_.isEmpty())
	default_style_ = "fusion";

	default_palette_ = QApplication::palette();
	}

	void GlobalSettings::set_defaults_where_needed()
	{
	if (!contains(Key_General_Language)) {
	// Determine and set default UI language
	QString language = QLocale().uiLanguages().first(); // May return e.g. en-Latn-US // clazy:exclude=detaching-temporary
	language = language.split("-").first();

	setValue(Key_General_Language, language);
	apply_language();
	}

	// Use no theme by default
	if (!contains(Key_General_Theme))
	setValue(Key_General_Theme, 0);
	if (!contains(Key_General_Style))
	setValue(Key_General_Style, "");

	// Save setup with .sr files by default
	if (!contains(Key_General_SaveWithSetup))
	setValue(Key_General_SaveWithSetup, true);

	// Enable zoom-to-fit after acquisition by default
	if (!contains(Key_View_ZoomToFitAfterAcq))
	setValue(Key_View_ZoomToFitAfterAcq, true);

	// Enable colored trace backgrounds by default
	if (!contains(Key_View_ColoredBG))
	setValue(Key_View_ColoredBG, true);

	// Enable showing sampling points by default
	if (!contains(Key_View_ShowSamplingPoints))
	setValue(Key_View_ShowSamplingPoints, true);

	// Enable filling logic signal high areas by default
	if (!contains(Key_View_FillSignalHighAreas))
	setValue(Key_View_FillSignalHighAreas, true);

	if (!contains(Key_View_DefaultDivHeight))
	setValue(Key_View_DefaultDivHeight,
	3 * QFontMetrics(QApplication::font()).height());

	if (!contains(Key_View_DefaultLogicHeight))
	setValue(Key_View_DefaultLogicHeight,
	2 * QFontMetrics(QApplication::font()).height());

	if (!contains(Key_View_ShowHoverMarker))
	setValue(Key_View_ShowHoverMarker, true);

	if (!contains(Key_View_SnapDistance))
	setValue(Key_View_SnapDistance, 15);

	if (!contains(Key_View_CursorShowInterval))
	setValue(Key_View_CursorShowInterval, true);

	if (!contains(Key_View_CursorShowFrequency))
	setValue(Key_View_CursorShowFrequency, true);

	// %c was used for the row name in the past so we need to transition such users
	if (!contains(Key_Dec_ExportFormat) \|\|
	value(Key_Dec_ExportFormat).toString() == "%s %d: %c: %1")
	setValue(Key_Dec_ExportFormat, "%s %d: %r: %1");

	// Default to 500 lines of backlog
	if (!contains(Key_Log_BufferSize))
	setValue(Key_Log_BufferSize, 500);

	// Notify user of existing stack trace by default
	if (!contains(Key_Log_NotifyOfStacktrace))
	setValue(Key_Log_NotifyOfStacktrace, true);

	// Default theme is bright, so use its color scheme if undefined
	if (!contains(Key_View_CursorFillColor))
	set_bright_theme_default_colors();
	}

	void GlobalSettings::set_bright_theme_default_colors()
	{
	setValue(Key_View_FillSignalHighAreaColor,
	QColor(0, 0, 0, 5 * 256 / 100).rgba());

	setValue(Key_View_CursorFillColor,
	QColor(220, 231, 243).rgba());
	}

	void GlobalSettings::set_dark_theme_default_colors()
	{
	setValue(Key_View_FillSignalHighAreaColor,
	QColor(188, 188, 188, 9 * 256 / 100).rgba());

	setValue(Key_View_CursorFillColor,
	QColor(60, 60, 60).rgba());
	}

	bool GlobalSettings::current_theme_is_dark()
	{
	return is_dark_theme_;
	}

	void GlobalSettings::apply_theme()
	{
	QString theme_name = Themes.at(value(Key_General_Theme).toInt()).first;
	QString resource_name = Themes.at(value(Key_General_Theme).toInt()).second;

	if (!resource_name.isEmpty()) {
	QFile file(resource_name);
	file.open(QFile::ReadOnly \| QFile::Text);
	qApp->setStyleSheet(file.readAll());
	} else
	qApp->setStyleSheet("");

	qApp->setPalette(default_palette_);

	const QString style = value(Key_General_Style).toString();
	if (style.isEmpty())
	qApp->setStyle(default_style_);
	else
	qApp->setStyle(style);

	is_dark_theme_ = false;

	if (theme_name.compare("QDarkStyleSheet") == 0) {
	QPalette dark_palette;
	dark_palette.setColor(QPalette::Window, QColor(53, 53, 53));
	dark_palette.setColor(QPalette::WindowText, Qt::white);
	dark_palette.setColor(QPalette::Base, QColor(42, 42, 42));
	dark_palette.setColor(QPalette::Dark, QColor(35, 35, 35));
	dark_palette.setColor(QPalette::Highlight, QColor(42, 130, 218));
	qApp->setPalette(dark_palette);
	is_dark_theme_ = true;
	} else if (theme_name.compare("DarkStyle") == 0) {
	QPalette dark_palette;
	dark_palette.setColor(QPalette::Window, QColor(53, 53, 53));
	dark_palette.setColor(QPalette::WindowText, Qt::white);
	dark_palette.setColor(QPalette::Disabled, QPalette::WindowText, QColor(127, 127, 127));
	dark_palette.setColor(QPalette::Base, QColor(42, 42, 42));
	dark_palette.setColor(QPalette::AlternateBase, QColor(66, 66, 66));
	dark_palette.setColor(QPalette::ToolTipBase, Qt::white);
	dark_palette.setColor(QPalette::ToolTipText, QColor(53, 53, 53));
	dark_palette.setColor(QPalette::Text, Qt::white);
	dark_palette.setColor(QPalette::Disabled, QPalette::Text, QColor(127, 127, 127));
	dark_palette.setColor(QPalette::Dark, QColor(35, 35, 35));
	dark_palette.setColor(QPalette::Shadow, QColor(20, 20, 20));
	dark_palette.setColor(QPalette::Button, QColor(53, 53, 53));
	dark_palette.setColor(QPalette::ButtonText, Qt::white);
	dark_palette.setColor(QPalette::Disabled, QPalette::ButtonText, QColor(127, 127, 127));
	dark_palette.setColor(QPalette::BrightText, Qt::red);
	dark_palette.setColor(QPalette::Link, QColor(42, 130, 218));
	dark_palette.setColor(QPalette::Highlight, QColor(42, 130, 218));
	dark_palette.setColor(QPalette::Disabled, QPalette::Highlight, QColor(80, 80, 80));
	dark_palette.setColor(QPalette::HighlightedText, Qt::white);
	dark_palette.setColor(QPalette::Disabled, QPalette::HighlightedText, QColor(127, 127, 127));
	qApp->setPalette(dark_palette);
	is_dark_theme_ = true;
	}

	QPixmapCache::clear();
	}

	void GlobalSettings::apply_language()
	{
	Application* a = qobject_cast<Application*>(QApplication::instance());
	a->switch_language(value(Key_General_Language).toString());
	}

	void GlobalSettings::add_change_handler(GlobalSettingsInterface *cb)
	{
	callbacks_.push_back(cb);
	}

	void GlobalSettings::remove_change_handler(GlobalSettingsInterface *cb)
	{
	for (auto cb_it = callbacks_.begin(); cb_it != callbacks_.end(); cb_it++)
	if (*cb_it == cb) {
	callbacks_.erase(cb_it);
	break;
	}
	}

	void GlobalSettings::setValue(const QString &key, const QVariant &value)
	{
	// Save previous value if we're tracking changes,
	// not altering an already-existing saved setting
	if (tracking_)
	tracked_changes_.emplace(key, QSettings::value(key));

	QSettings::setValue(key, value);

	// TODO Emulate noquote()
	qDebug() << "Setting" << key << "changed to" << value;

	// Call all registered callbacks
	for (GlobalSettingsInterface *cb : callbacks_)
	cb->on_setting_changed(key, value);
	}

	void GlobalSettings::start_tracking()
	{
	tracking_ = true;
	tracked_changes_.clear();
	}

	void GlobalSettings::stop_tracking()
	{
	tracking_ = false;
	tracked_changes_.clear();
	}

	void GlobalSettings::undo_tracked_changes()
	{
	tracking_ = false;

	for (auto& entry : tracked_changes_)
	setValue(entry.first, entry.second);

	tracked_changes_.clear();
	}

	void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v)
	{
	const GVariantType *var_type = g_variant_get_type(v);
	char *var_type_str = g_variant_type_dup_string(var_type);

	QByteArray var_data = QByteArray((const char*)g_variant_get_data(v),
	g_variant_get_size(v));

	settings.setValue("value", var_data);
	settings.setValue("type", var_type_str);

	g_free(var_type_str);
	}

	GVariant* GlobalSettings::restore_gvariant(QSettings &settings)
	{
	QString raw_type = settings.value("type").toString();
	GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());

	QByteArray data = settings.value("value").toByteArray();

	gpointer var_data = g_memdup((gconstpointer)data.constData(),
	(guint)data.size());

	GVariant *value = g_variant_new_from_data(var_type, var_data,
	data.size(), false, g_free, var_data);

	g_variant_type_free(var_type);

	return value;
	}

	void GlobalSettings::store_variantbase(QSettings &settings, Glib::VariantBase v)
	{
	const QByteArray var_data = QByteArray((const char*)v.get_data(), v.get_size());

	settings.setValue("value", var_data);
	settings.setValue("type", QString::fromStdString(v.get_type_string()));
	}

	Glib::VariantBase GlobalSettings::restore_variantbase(QSettings &settings)
	{
	QString raw_type = settings.value("type").toString();
	GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());

	QByteArray data = settings.value("value").toByteArray();

	gpointer var_data = g_memdup((gconstpointer)data.constData(),
	(guint)data.size());

	GVariant *value = g_variant_new_from_data(var_type, var_data,
	data.size(), false, g_free, var_data);

	Glib::VariantBase ret_val = Glib::VariantBase(value, true);

	g_variant_type_free(var_type);
	g_variant_unref(value);

	return ret_val;
	}

	void GlobalSettings::store_timestamp(QSettings &settings, const char *name, const pv::util::Timestamp &ts)
	{
	stringstream ss;
	boost::archive::text_oarchive oa(ss);
	oa << boost::serialization::make_nvp(name, ts);
	settings.setValue(name, QString::fromStdString(ss.str()));
	}

	pv::util::Timestamp GlobalSettings::restore_timestamp(QSettings &settings, const char *name)
	{
	util::Timestamp result;
	stringstream ss;
	ss << settings.value(name).toString().toStdString();

	try {
	boost::archive::text_iarchive ia(ss);
	ia >> boost::serialization::make_nvp(name, result);
	} catch (boost::archive::archive_exception&) {
	qDebug() << "Could not restore setting" << name;
	}

	return result;
	}

	} // namespace pv