ch02-sysinfo/sysinfowidget.cpp

#include "sysinfowidget.h"

#include <QVBoxLayout>

SysInfoWidget::SysInfoWidget(QWidget* parent, int startDelayMs,
                             int updateSeriesDelayMs)
    : QWidget(parent), mChartView(this) {
  mRefreshTimer.setInterval(updateSeriesDelayMs);

  // 时间到就触发 updateSeries 函数
  connect(&mRefreshTimer, &QTimer::timeout, this, &SysInfoWidget::updateSeries);

  QTimer::singleShot(startDelayMs, [this] { mRefreshTimer.start(); });

  mChartView.setRenderHint(QPainter::Antialiasing);
  mChartView.chart()->legend()->setVisible(false);

  QVBoxLayout* layout = new QVBoxLayout(this);
  layout->addWidget(&mChartView);
  setLayout(layout);
}

QChartView& SysInfoWidget::chartView() { return mChartView; }