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, see <http://www.gnu.org/licenses/>.
 */

#ifndef PULSEVIEW_PV_VIEWS_TRACE_LOGICSIGNAL_HPP
#define PULSEVIEW_PV_VIEWS_TRACE_LOGICSIGNAL_HPP

#include <QCache>
#include <QColor>
#include <QDebug>
#include <QSpinBox>

#include "signal.hpp"

#include <memory>

using std::pair;
using std::shared_ptr;
using std::vector;

class QIcon;
class QToolBar;

namespace sigrok {
class TriggerMatchType;
}

namespace pv {

namespace devices {
class Device;
}

namespace data {
class Logic;
}

namespace views {
namespace trace {

class LogicSignal : public Signal
{
    Q_OBJECT

public:
    static const float Oversampling;

    static const QColor EdgeColor;
    static const QColor HighColor;
    static const QColor LowColor;
    static const QColor SamplingPointColor;

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

    LogicSignal(pv::Session &session, shared_ptr<data::SignalBase> base);

    virtual ~LogicSignal() = default;

    virtual std::map<QString, QVariant> save_settings() const;
    virtual void restore_settings(std::map<QString, QVariant> settings);

    virtual pair<int, int> v_extents() const;

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

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

    virtual vector<data::LogicSegment::EdgePair> get_nearest_level_changes(uint64_t sample_pos);

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

    shared_ptr<pv::data::LogicSegment> get_logic_segment_to_paint() const;

    void init_trigger_actions(QWidget *parent);

    const vector<int32_t> get_trigger_types() const;
    QAction* action_from_trigger_type(const sigrok::TriggerMatchType *type);
    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);

    virtual void update_logic_level_offsets();

protected Q_SLOTS:
    void on_setting_changed(const QString &key, const QVariant &value);

    void on_trigger();

    void on_signal_height_changed(int height);

protected:
    QColor high_fill_color_;
    bool show_sampling_points_, fill_high_areas_;
    float high_level_offset_, low_level_offset_;  // y offsets relative to trace

    QSpinBox *signal_height_sb_;

    const sigrok::TriggerMatchType *trigger_match_;
    const vector<int32_t> trigger_types_;
    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_;

    // ---------------------------------------------------------------------------
    // Note: Make sure to update save_settings() and restore_settings() when
    //       adding a trace-configurable variable here
    int signal_height_;
};

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

#endif // PULSEVIEW_PV_VIEWS_TRACE_LOGICSIGNAL_HPP