cursorpair.hpp

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/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2013 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_CURSORPAIR_HPP
#define PULSEVIEW_PV_VIEWS_TRACE_CURSORPAIR_HPP

#include "cursor.hpp"
#include "pv/globalsettings.hpp"

#include <memory>

#include <QColor>
#include <QPainter>
#include <QRect>

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

class QPainter;

namespace pv {
namespace views {
namespace trace {

class View;

class CursorPair : public TimeItem, public GlobalSettingsInterface
{
    Q_OBJECT

private:
    static const int DeltaPadding;

public:
    CursorPair(View &view);

    ~CursorPair();

    bool enabled() const override;

    shared_ptr<Cursor> first() const;

    shared_ptr<Cursor> second() const;

    void set_time(const pv::util::Timestamp& time) override;

    virtual const pv::util::Timestamp time() const override;

    float get_x() const override;

    virtual const pv::util::Timestamp delta(const pv::util::Timestamp& other) const override;

    QPoint drag_point(const QRect &rect) const override;

    pv::widgets::Popup* create_popup(QWidget *parent) override;

    QMenu* create_header_context_menu(QWidget *parent) override;

    QRectF label_rect(const QRectF &rect) const override;

    void paint_label(QPainter &p, const QRect &rect, bool hover) override;

    void paint_back(QPainter &p, ViewItemPaintParams &pp) override;

    QString format_string(int max_width = 0, std::function<double(const QString&)> query_size
        = [](const QString& s) -> double { (void)s; return 0; });

    pair<float, float> get_cursor_offsets() const;

    virtual void on_setting_changed(const QString &key, const QVariant &value) override;

public Q_SLOTS:
    void on_hover_point_changed(const QWidget* widget, const QPoint &hp);

private:
    QString format_string_sub(int time_precision, int freq_precision, bool show_unit = true);

private:
    shared_ptr<Cursor> first_, second_;
    QColor fill_color_;

    QSizeF text_size_;
    QRectF label_area_;
    bool label_incomplete_;
    bool show_interval_, show_frequency_, show_samples_;
};

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

#endif // PULSEVIEW_PV_VIEWS_TRACE_CURSORPAIR_HPP