signal.cpp

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/*
 * 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 <extdef.h>

#include <cassert>
#include <cmath>

#include <QApplication>
#include <QFormLayout>
#include <QKeyEvent>
#include <QLineEdit>
#include <QMenu>

#include <libsigrokcxx/libsigrokcxx.hpp>

#include "pv/data/signalbase.hpp"

#include "signal.hpp"
#include "view.hpp"

using std::shared_ptr;

namespace pv {
namespace views {
namespace trace {

const char *const ChannelNames[] = {
    "CLK",
    "DATA",
    "EN",
    "IN",
    "OUT",
    "RST",
    "TX",
    "RX",
    "SDA",
    "SCL",
    "SCLK",
    "MOSI",
    "MISO",
    "/CS",
    "nCS",
    "/SS",
    "nSS",
    "/RST",
    "nRST",
};

Signal::Signal(pv::Session &session,
    shared_ptr<data::SignalBase> signal) :
    Trace(signal),
    session_(session),
    name_widget_(nullptr)
{
    assert(base_);

    connect(base_.get(), SIGNAL(enabled_changed(bool)),
        this, SLOT(on_enabled_changed(bool)));
}

void Signal::set_name(QString name)
{
    base_->set_name(name);

    if (name != name_widget_->currentText())
        name_widget_->setEditText(name);
}

bool Signal::enabled() const
{
    return base_->enabled();
}

shared_ptr<data::SignalBase> Signal::base() const
{
    return base_;
}

void Signal::save_settings(QSettings &settings) const
{
    std::map<QString, QVariant> settings_map = save_settings();

    for (auto& entry : settings_map)
        settings.setValue(entry.first, entry.second);
}

std::map<QString, QVariant> Signal::save_settings() const
{
    return std::map<QString, QVariant>();
}

void Signal::restore_settings(QSettings &settings)
{
    std::map<QString, QVariant> settings_map;

    QStringList keys = settings.allKeys();
    for (int i = 0; i < keys.size(); i++)
        settings_map[keys.at(i)] = settings.value(keys.at(i));

    restore_settings(settings_map);
}

void Signal::restore_settings(std::map<QString, QVariant> settings)
{
    (void)settings;
}


void Signal::paint_back(QPainter &p, ViewItemPaintParams &pp)
{
    if (base_->enabled())
        Trace::paint_back(p, pp);
}

void Signal::populate_popup_form(QWidget *parent, QFormLayout *form)
{
    name_widget_ = new QComboBox(parent);
    name_widget_->setEditable(true);
    name_widget_->setCompleter(nullptr);

    for (unsigned int i = 0; i < countof(ChannelNames); i++)
        name_widget_->insertItem(i, ChannelNames[i]);

    const int index = name_widget_->findText(base_->name(), Qt::MatchExactly);

    if (index == -1) {
        name_widget_->insertItem(0, base_->name());
        name_widget_->setCurrentIndex(0);
    } else {
        name_widget_->setCurrentIndex(index);
    }

    connect(name_widget_, SIGNAL(editTextChanged(const QString&)),
        this, SLOT(on_nameedit_changed(const QString&)));

    form->addRow(tr("Name"), name_widget_);

    add_color_option(parent, form);
}

QMenu* Signal::create_header_context_menu(QWidget *parent)
{
    QMenu *const menu = Trace::create_header_context_menu(parent);

    menu->addSeparator();

    QString caption;

    if (base_->is_generated())
        caption = tr("Remove");
    else
        caption = tr("Disable");

    QAction *const a = new QAction(caption, this);
    a->setShortcuts(QKeySequence::Delete);
    connect(a, SIGNAL(triggered()), this, SLOT(on_disable()));
    menu->addAction(a);

    return menu;
}

void Signal::delete_pressed()
{
    on_disable();
}

void Signal::on_name_changed(const QString &text)
{
    // On startup, this event is fired when a session restores signal
    // names. However, the name widget hasn't yet been created.
    if (!name_widget_)
        return;

    if (text != name_widget_->currentText())
        name_widget_->setEditText(text);

    Trace::on_name_changed(text);
}

void Signal::on_disable()
{
    // For generated signals, "disable" means "remove"
    if (base_->is_generated())
        session_.remove_generated_signal(base_);
    else
        base_->set_enabled(false);
}

void Signal::on_enabled_changed(bool enabled)
{
    (void)enabled;

    if (owner_)
        owner_->extents_changed(true, true);
}

} // namespace trace
} // namespace views
} // namespace pv