mirror of git://sigrok.org/pulseview
160 lines
4.7 KiB
C++
160 lines
4.7 KiB
C++
/*
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* This file is part of the PulseView project.
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*
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* Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "globalsettings.hpp"
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#include <QApplication>
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#include <QFontMetrics>
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#include <QString>
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using std::map;
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using std::vector;
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namespace pv {
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const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq";
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const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq";
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const QString GlobalSettings::Key_View_TriggerIsZeroTime = "View_TriggerIsZeroTime";
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const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG";
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const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
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const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints";
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const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid";
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const QString GlobalSettings::Key_View_ConversionThresholdDispMode = "View_ConversionThresholdDispMode";
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const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight";
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const QString GlobalSettings::Key_View_DefaultLogicHeight = "View_DefaultLogicHeight";
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const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable";
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vector<GlobalSettingsInterface*> GlobalSettings::callbacks_;
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bool GlobalSettings::tracking_ = false;
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map<QString, QVariant> GlobalSettings::tracked_changes_;
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GlobalSettings::GlobalSettings() :
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QSettings()
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{
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beginGroup("Settings");
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}
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void GlobalSettings::set_defaults_where_needed()
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{
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// Enable zoom-to-fit after acquisition by default
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if (!contains(Key_View_ZoomToFitAfterAcq))
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setValue(Key_View_ZoomToFitAfterAcq, true);
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// Enable coloured trace backgrounds by default
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if (!contains(Key_View_ColouredBG))
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setValue(Key_View_ColouredBG, true);
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// Enable showing sampling points by default
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if (!contains(Key_View_ShowSamplingPoints))
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setValue(Key_View_ShowSamplingPoints, true);
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if (!contains(Key_View_DefaultDivHeight))
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setValue(Key_View_DefaultDivHeight,
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3 * QFontMetrics(QApplication::font()).height());
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if (!contains(Key_View_DefaultLogicHeight))
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setValue(Key_View_DefaultLogicHeight,
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2 * QFontMetrics(QApplication::font()).height());
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}
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void GlobalSettings::add_change_handler(GlobalSettingsInterface *cb)
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{
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callbacks_.push_back(cb);
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}
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void GlobalSettings::remove_change_handler(GlobalSettingsInterface *cb)
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{
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for (auto cb_it = callbacks_.begin(); cb_it != callbacks_.end(); cb_it++)
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if (*cb_it == cb) {
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callbacks_.erase(cb_it);
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break;
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}
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}
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void GlobalSettings::setValue(const QString &key, const QVariant &value)
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{
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// Save previous value if we're tracking changes,
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// not altering an already-existing saved setting
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if (tracking_)
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tracked_changes_.emplace(key, QSettings::value(key));
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QSettings::setValue(key, value);
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// Call all registered callbacks
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for (GlobalSettingsInterface *cb : callbacks_)
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cb->on_setting_changed(key, value);
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}
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void GlobalSettings::start_tracking()
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{
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tracking_ = true;
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tracked_changes_.clear();
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}
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void GlobalSettings::stop_tracking()
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{
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tracking_ = false;
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tracked_changes_.clear();
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}
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void GlobalSettings::undo_tracked_changes()
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{
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tracking_ = false;
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for (auto entry : tracked_changes_)
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setValue(entry.first, entry.second);
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tracked_changes_.clear();
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}
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void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v)
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{
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const GVariantType *var_type = g_variant_get_type(v);
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char *var_type_str = g_variant_type_dup_string(var_type);
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QByteArray var_data = QByteArray((const char*)g_variant_get_data(v),
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g_variant_get_size(v));
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settings.setValue("value", var_data);
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settings.setValue("type", var_type_str);
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g_free(var_type_str);
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}
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GVariant* GlobalSettings::restore_gvariant(QSettings &settings)
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{
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QString raw_type = settings.value("type").toString();
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GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());
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QByteArray data = settings.value("value").toByteArray();
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gpointer var_data = g_memdup((gconstpointer)data.constData(),
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(guint)data.size());
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GVariant *value = g_variant_new_from_data(var_type, var_data,
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data.size(), false, g_free, var_data);
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g_variant_type_free(var_type);
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return value;
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}
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} // namespace pv
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