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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <extdef.h>

#include <assert.h>
#include <cmath>

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

#include <libsigrokcxx/libsigrokcxx.hpp>

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

using std::shared_ptr;
using std::make_shared;

using sigrok::Channel;

namespace pv {
namespace view {

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

Signal::Signal(pv::Session &session,
    std::shared_ptr<sigrok::Channel> channel) :
    Trace(QString::fromUtf8(channel->name().c_str())),
    session_(session),
    channel_(channel),
    scale_handle_(make_shared<SignalScaleHandle>(*this)),
    items_({scale_handle_}),
    name_widget_(nullptr)
{
    assert(channel_);
}

void Signal::set_name(QString name)
{
    Trace::set_name(name);

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

    // Store the channel name in sigrok::Channel so that it
    // will end up in the .sr file upon save.
    channel_->set_name(name.toUtf8().constData());
}

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

void Signal::enable(bool enable)
{
    channel_->set_enabled(enable);

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

shared_ptr<Channel> Signal::channel() const
{
    return channel_;
}

const ViewItemOwner::item_list& Signal::child_items() const
{
    return items_;
}

void Signal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
{
    if (channel_->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(0);

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

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

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

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

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

    add_colour_option(parent, form);
}

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

    menu->addSeparator();

    QAction *const disable = new QAction(tr("Disable"), this);
    disable->setShortcuts(QKeySequence::Delete);
    connect(disable, SIGNAL(triggered()), this, SLOT(on_disable()));
    menu->addAction(disable);

    return menu;
}

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

void Signal::on_disable()
{
    enable(false);
}

} // namespace view
} // namespace pv