Imported existing sources

2019-04-01 10:43:36 +02:00
parent eb1c3bf259
commit cd9bfb8ffe
56 changed files with 3694 additions and 0 deletions
@@ -0,0 +1,104 @@
+#include "graphdialog.h"
+#include "ui_graphdialog.h"
+
+#include <QSqlQuery>
+#include <QSqlError>
+#include <QDateTime>
+#include <QDebug>
+
+#include <QLineSeries>
+#include <QDateTimeAxis>
+#include <QValueAxis>
+
+GraphDialog::GraphDialog(QSqlDatabase &database, QWidget *parent) :
+    QDialog(parent),
+    m_ui(std::make_unique<Ui::GraphDialog>()),
+    m_database(database)
+{
+    m_ui->setupUi(this);
+
+    QString sql;
+
+    if (m_database.driverName() == "QSQLITE")
+    {
+        sql = "SELECT "
+                  "`Timestamp`, "
+                  "COUNT(`Timestamp`) "
+              "FROM "
+                  "`Logs` "
+              "GROUP BY "
+                  "STRFTIME('%Y-%m-%d %H:00:00.000', `Timestamp`)";
+    }
+    else if (m_database.driverName() == "QMYSQL")
+    {
+        sql = "SELECT "
+                  "`Timestamp`, "
+                  "COUNT(`Timestamp`) "
+              "FROM "
+                  "`Logs` "
+              "GROUP BY "
+                  "DATE_FORMAT(`Timestamp`, '%Y-%m-%d %H:%i:00.000')";
+    }
+    else
+        qFatal("unknown sql driver");
+
+    QSqlQuery query(sql, m_database);
+    if (query.lastError().isValid())
+        qCritical() << query.lastError().text();
+
+    auto chart = new QtCharts::QChart();
+    chart->legend()->hide();
+    chart->setTitle(tr("Charts-Test"));
+
+    auto series = new QtCharts::QLineSeries();
+    chart->addSeries(series);
+
+    QDateTime minDt, maxDt;
+    int maxCount{};
+
+    while (query.next())
+    {
+        const auto timestampStr = query.value(0).toString();
+        qDebug() << timestampStr;
+
+        const auto timestamp = QDateTime::fromString(timestampStr, QStringLiteral("yyyy-MM-dd HH:mm:ss.zzz"));
+        Q_ASSERT(timestamp.isValid());
+
+        if (minDt.isNull() || timestamp < minDt)
+            minDt = timestamp;
+
+        if (maxDt.isNull() || timestamp > maxDt)
+            maxDt = timestamp;
+
+        const auto count = query.value(1).toInt();
+
+        if (count > maxCount)
+            maxCount = count;
+
+        qDebug() << timestamp << count;
+
+        series->append(timestamp.toMSecsSinceEpoch(), count);
+    }
+
+    qDebug() << minDt << maxDt;
+
+    auto axisX = new QtCharts::QDateTimeAxis;
+    axisX->setRange(minDt, maxDt);
+    axisX->setTickCount(20);
+    axisX->setFormat("HH:mm:ss");
+    axisX->setTitleText("Timestamp");
+    chart->addAxis(axisX, Qt::AlignBottom);
+    series->attachAxis(axisX);
+
+    auto axisY = new QtCharts::QValueAxis;
+    axisY->setMax(maxCount);
+    axisY->setLabelFormat("%i");
+    axisY->setTitleText("Logs count");
+    chart->addAxis(axisY, Qt::AlignLeft);
+    series->attachAxis(axisY);
+
+    m_ui->chartView->setRenderHint(QPainter::Antialiasing);
+    m_ui->chartView->setChart(chart);
+}
+
+GraphDialog::~GraphDialog() = default;