pulseview/pv/prop/enum.cpp

89 lines
2.0 KiB
C++

/*
* This file is part of the PulseView project.
*
* Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
*
* 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 <cassert>
#include <QComboBox>
#include "enum.hpp"
using std::pair;
using std::vector;
namespace pv {
namespace prop {
Enum::Enum(QString name, QString desc,
vector<pair<Glib::VariantBase, QString> > values,
Getter getter, Setter setter) :
Property(name, desc, getter, setter),
values_(values),
selector_(nullptr)
{
}
QWidget* Enum::get_widget(QWidget *parent, bool auto_commit)
{
if (selector_)
return selector_;
if (!getter_)
return nullptr;
Glib::VariantBase variant = getter_();
if (!variant.gobj())
return nullptr;
selector_ = new QComboBox(parent);
for (unsigned int i = 0; i < values_.size(); i++) {
const pair<Glib::VariantBase, QString> &v = values_[i];
selector_->addItem(v.second, qVariantFromValue(v.first));
if (v.first.equal(variant))
selector_->setCurrentIndex(i);
}
if (auto_commit)
connect(selector_, SIGNAL(currentIndexChanged(int)),
this, SLOT(on_current_item_changed(int)));
return selector_;
}
void Enum::commit()
{
assert(setter_);
if (!selector_)
return;
const int index = selector_->currentIndex();
if (index < 0)
return;
setter_(selector_->itemData(index).value<Glib::VariantBase>());
}
void Enum::on_current_item_changed(int)
{
commit();
}
} // namespace prop
} // namespace pv