chartview.cpp
53 lines
| 1.0 KiB
| text/x-c
|
CppLexer
|
r599 | #include "chartview.h" | ||
#include <QSplineSeries> | ||||
#include <QTime> | ||||
ChartView::ChartView(QWidget* parent):QChartView(parent), | ||||
m_step(1), | ||||
m_x(0), | ||||
m_y(1) | ||||
{ | ||||
QTime now = QTime::currentTime(); | ||||
qsrand((uint)now.msec()); | ||||
setChartTitle("Three random line charts"); | ||||
QObject::connect(&m_timer,SIGNAL(timeout()),this,SLOT(handleTimeout())); | ||||
m_timer.setInterval(1000); | ||||
m_series0 = new QLineSeries(this); | ||||
QPen blue(Qt::blue); | ||||
blue.setWidth(3); | ||||
m_series0->setPen(blue); | ||||
m_series1 = new QSplineSeries(this); | ||||
QPen green(Qt::green); | ||||
green.setWidth(3); | ||||
m_series1->setPen(green); | ||||
m_series0->add(m_x,m_y); | ||||
m_series1->add(m_x,m_y); | ||||
setChartTitle("Simple EKG exmaple"); | ||||
addSeries(m_series0); | ||||
addSeries(m_series1); | ||||
axisY()->setRange(-5,5); | ||||
axisX()->setRange(-9,1); | ||||
axisX()->setTicksCount(11); | ||||
m_timer.start(); | ||||
} | ||||
ChartView::~ChartView() | ||||
{ | ||||
} | ||||
void ChartView::handleTimeout() | ||||
{ | ||||
m_x+=m_step; | ||||
m_y = qrand() % 5 - 2.5; | ||||
m_series0->add(m_x,m_y); | ||||
m_series1->add(m_x,m_y); | ||||
scrollRight(); | ||||
} | ||||