HX_CoalFlowDetect/view/coalstatisticschartwidget.cpp

#include "coalstatisticschartwidget.h"
#include "ui_coalstatisticschartwidget.h"

#include <QJsonDocument>
#include <QJsonObject>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QUrl>
#include <QUrlQuery>

CoalStatisticsChartWidget::CoalStatisticsChartWidget(QWidget* parent)
    : QWidget(parent)
    , ui(new Ui::CoalStatisticsChartWidget)
{
    ui->setupUi(this);

    initCoalStatisticsBarChart();

    getCoalStatisInfoByHttpRequest("2024-09-01 08", "2024-09-02 08");
}

CoalStatisticsChartWidget::~CoalStatisticsChartWidget()
{
    delete ui;
}

void CoalStatisticsChartWidget::initCoalStatisticsBarChart()
{
    // 创建图表
    m_chart = new QChart();
    m_chart->setBackgroundBrush(Qt::transparent);
    m_chart->setMargins(QMargins(0, 0, 0, 0));
    m_chart->legend()->hide();

    // 创建图表视图并设置
    m_chartView = new QChartView(m_chart);
    m_chartView->setBackgroundBrush(Qt::transparent);
    m_chartView->setStyleSheet("background: transparent;");
    m_chartView->setRenderHint(QPainter::Antialiasing);
    m_chartView->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    // 创建柱状图
    m_series = new QBarSeries();
    m_chart->addSeries(m_series);

    // 设置X轴为时间
    QValueAxis* axisX = new QValueAxis;
    axisX->setRange(1, 300);
    axisX->setTickCount(10);
    axisX->setLabelFormat("%d");
    axisX->setLinePen(QPen(Qt::gray));
    axisX->setLabelsColor(Qt::gray);
    axisX->setMinorTickCount(0);
    m_chart->addAxis(axisX, Qt::AlignBottom);
    m_series->attachAxis(axisX);

    // 设置Y轴为百分比
    QValueAxis* axisY = new QValueAxis;
    axisY->setTitleText("吨");
    axisY->setTitleBrush(QBrush(Qt::gray));
    axisY->setLinePen(QPen(Qt::gray));
    axisY->setLabelsColor(Qt::gray);
    axisY->setRange(0, 100);
    m_chart->addAxis(axisY, Qt::AlignLeft);
    m_series->attachAxis(axisY);

    // 设置Y轴标题位置
    axisY->setTitleFont(QFont("Arial", 10));
    axisY->setTitleVisible(true);

    // 获取 widget_coalChart 的布局
    QVBoxLayout* layout = static_cast<QVBoxLayout*>(ui->widget_coalChart->layout());
    if (!layout) {
        // 如果没有布局，创建一个新的布局并设置
        layout = new QVBoxLayout(ui->widget_coalChart);
        ui->widget_coalChart->setLayout(layout);
    }

    // 设置布局参数
    layout->setContentsMargins(0, 0, 0, 0);
    layout->setSpacing(0);

    // 确保视图只添加一次
    if (!layout->indexOf(m_chartView) != -1) {
        layout->addWidget(m_chartView);
    }
}

void CoalStatisticsChartWidget::getCoalStatisInfoByHttpRequest(const QString& beginTime, const QString& endTime)
{
    QNetworkAccessManager* manager = new QNetworkAccessManager();

    // URL
    QUrl url("http://192.168.5.205:5002/api/get/coal/statistics/value/");
    QNetworkRequest request(url);

    // Form data
    QUrlQuery params;
    params.addQueryItem("begin_time", beginTime);
    params.addQueryItem("end_time", endTime);

    // 设置请求头
    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");

    // 发送 POST 请求
    QNetworkReply* reply = manager->post(request, params.query(QUrl::FullyEncoded).toUtf8());

    // 连接信号和槽
    QObject::connect(reply, &QNetworkReply::finished, [reply]() {
        if (reply->error() == QNetworkReply::NoError) {
            // 处理成功的响应
            QByteArray responseData = reply->readAll();
            QJsonDocument jsonResponse = QJsonDocument::fromJson(responseData);
            QJsonObject jsonObj = jsonResponse.object();

            int code = jsonObj["code"].toInt();
            QString message = jsonObj["message"].toString();
            QJsonObject data = jsonObj["data"].toObject();
            double totalVolume = data["total_volume"].toDouble();

            qDebug() << "Code:" << code;
            qDebug() << "Message:" << message;
            qDebug() << "Total Volume:" << totalVolume;
        } else {
            // 处理错误
            qDebug() << "Error:" << reply->errorString();
        }
        reply->deleteLater();
    });
}