ecggraph.h - mozsearch

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// Copyright (C) 2025 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

#ifndef ECGGRAPH_H

#define ECGGRAPH_H

#include "theme.h"

#include <QList>

QT_FORWARD_DECLARE_CLASS(QCanvasPainter)

class MainWindow;

class ECGGraph

public:

    explicit ECGGraph();

    void paintWaves(QCanvasPainter *painter, float x, float y, float w, float h);

    void initialize();

    void updateData(float hr);

private:

    friend class MainWindow;

    void paintWave(float x, float y, float w, float h);

    void paintSpo2Wave(float x, float y, float w, float h);

    void fillEmptyData();

    void fillRandomData();

    void fillBeatData();

    MainWindow *m_mainWindow;

    QCanvasPainter *m_painter;

    Theme *m_theme;

    // Wave data of each graph. Amount of graphs is m_waveAmount.

    QList<float> m_waveData;

    // Index of new data arriving

    int m_heartDataIndex = 0;

    // Beat index for creating dummy data. Values > -1 mean that beat is ongoing.

    int m_beatDataIndex = -1;

    // Amount of data points per graph

    int m_dataLength = 250;

    // How big is the space between fresh data & old data, in items

    int m_clearAmount = 20;

    // Index of old data disappearing

    int m_clearDataIndex = 0;

    // How often a heart pulse comes, every nth frame

    // On 60Hz screen, 40 means HR = 60 * (60/40) = 90

    int m_pulseRate = 40;

    // Currently rendering frame

    int m_currentFrame = 0;

    // Frame where current pulse has started

    int m_beatFrame = 0;

    // True when the sensors are attached

    bool m_attached = true;

    // True when defibrillator is attached, causing random spikes

    bool m_defibrillator = false;

    float m_lineWidth = 2.0;

    QList<float> m_spo2Data;

};

#endif // ECGGRAPH_H