logicsignal.hpp

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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
 */

#ifndef PULSEVIEW_PV_VIEW_LOGICSIGNAL_HPP
#define PULSEVIEW_PV_VIEW_LOGICSIGNAL_HPP

#include <QCache>

#include "signal.hpp"

#include <memory>

class QIcon;
class QToolBar;

namespace sigrok {
class TriggerMatchType;
}

namespace pv {

namespace devices {
class Device;
}

namespace data {
class Logic;
}

namespace view {

class LogicSignal : public Signal
{
    Q_OBJECT

private:
    static const float Oversampling;

    static const QColor EdgeColour;
    static const QColor HighColour;
    static const QColor LowColour;

    static const QColor SignalColours[10];

    static QColor TriggerMarkerBackgroundColour;
    static const int TriggerMarkerPadding;
    static const char* TriggerMarkerIcons[8];

public:
    LogicSignal(pv::Session &session,
        std::shared_ptr<devices::Device> device,
        std::shared_ptr<sigrok::Channel> channel,
        std::shared_ptr<pv::data::Logic> data);

    virtual ~LogicSignal();

    std::shared_ptr<pv::data::SignalData> data() const;

    std::shared_ptr<pv::data::Logic> logic_data() const;

    void set_logic_data(std::shared_ptr<pv::data::Logic> data);

    std::pair<int, int> v_extents() const;

    int scale_handle_offset() const;

    void scale_handle_dragged(int offset);

    void paint_mid(QPainter &p, const ViewItemPaintParams &pp);

    virtual void paint_fore(QPainter &p, const ViewItemPaintParams &pp);

private:
    void paint_caps(QPainter &p, QLineF *const lines,
        std::vector< std::pair<int64_t, bool> > &edges,
        bool level, double samples_per_pixel, double pixels_offset,
        float x_offset, float y_offset);

    void init_trigger_actions(QWidget *parent);

    const std::vector<int32_t> get_trigger_types() const;
    QAction* action_from_trigger_type(
        const sigrok::TriggerMatchType *match);
    const sigrok::TriggerMatchType* trigger_type_from_action(
        QAction *action);
    void populate_popup_form(QWidget *parent, QFormLayout *form);
    void modify_trigger();

    static const QIcon* get_icon(const char *path);
    static const QPixmap* get_pixmap(const char *path);

private Q_SLOTS:
    void on_trigger();

private:
    int signal_height_;

    std::shared_ptr<pv::devices::Device> device_;
    std::shared_ptr<pv::data::Logic> data_;

    const sigrok::TriggerMatchType *trigger_match_;
    QToolBar *trigger_bar_;
    QAction *trigger_none_;
    QAction *trigger_rising_;
    QAction *trigger_high_;
    QAction *trigger_falling_;
    QAction *trigger_low_;
    QAction *trigger_change_;

    static QCache<QString, const QIcon> icon_cache_;
    static QCache<QString, const QPixmap> pixmap_cache_;
};

} // namespace view
} // namespace pv

#endif // PULSEVIEW_PV_VIEW_LOGICSIGNAL_HPP