TSI_Config/tachometer.cpp

#include "tachometer.h"
#include "ui_tachometer.h"
#include <QDebug>
#include <QFile>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonParseError>
#include <QJsonArray>

Tachometer::Tachometer(int slot_no_,QWidget *parent)
    : QDialog(parent)
    , ui(new Ui::Tachometer)
{
    ui->setupUi(this);
    ui->widget_body->setProperty("flag", "body");
    slot_no = slot_no_;
    QString slot = QString("%1").arg(slot_no);

    QString filePath_tachometer = QCoreApplication::applicationDirPath() + QString("\\config\\%1\\tachometer.json").arg(slot_no);
    readJsonFile(filePath_tachometer);
    Init();
}

Tachometer::~Tachometer()
{

    delete ui;
}
void Tachometer::readJsonFile(const QString &filePath)
{
    QFile file(filePath);
    if(!file.open(QIODevice::ReadOnly))
    {
        qDebug() << "Could not open file for reading";
        return;
    }
    QByteArray saveData = file.readAll();
    QJsonParseError json_error;
    QJsonDocument parse_doucment = QJsonDocument::fromJson(saveData, &json_error);
    if(json_error.error != QJsonParseError::NoError)
    {
        qDebug() << "json error!";
        return;
    }
    QJsonObject json_obj = parse_doucment.object();
    QJsonArray chan_array = json_obj["chan"].toArray();
    for(int i = 0; i < chan_array.size(); i++){
        QJsonObject temp_obj = chan_array[i].toObject();
        tachometer_variables[i].id = temp_obj["id"].toInt();
        tachometer_variables[i].active = temp_obj["active"].toBool();
        QJsonArray voltage_range_array = temp_obj["normal_voltage_range"].toArray();
        tachometer_variables[i].normal_voltage_high = voltage_range_array[1].toDouble();
        tachometer_variables[i].normal_voltage_low = voltage_range_array[0].toDouble();
        tachometer_variables[i].threshold = temp_obj["threshold"].toDouble();
        tachometer_variables[i].hysteresis = temp_obj["hysteresis"].toDouble();
        tachometer_variables[i].events_per_revolution = temp_obj["events_per_revolution"].toInt();
        tachometer_variables[i].record_output = temp_obj["record_output"].toString();
        tachometer_variables[i].two_ma_clamp = temp_obj["two_ma_clamp"].toBool();
        tachometer_variables[i].alert_latching = temp_obj["alert_latching"].toBool();
        tachometer_variables[i].overspeed_latching = temp_obj["overspeed_latching"].toBool();
        tachometer_variables[i].normal_latching = temp_obj["normal_latching"].toBool();
        tachometer_variables[i].alert_response_time = temp_obj["alert_response_time"].toInt();
        tachometer_variables[i].danger_response_time = temp_obj["danger_response_time"].toInt();
    }

}
void Tachometer::Init()
{

}