QLineSeries

#include "mylineseries.h" #include "ui_mylineseries.h" MyLineSeries::MyLineSeries(QWidget *parent) : QMainWindow(parent), ui(new Ui::MyLineSeries) { ui->setupUi(this); m_chartView = new QChartView(this); m_chart = new QChart(); m_chart->setTitle("简单的曲线"); m_chartView->setChart(m_chart); //this->setCentralWidget(chartView); ui->showLayout->addWidget(m_chartView); //创建QLineSeries QLineSeries *series0 = new QLineSeries(); QLineSeries *series1 = new QLineSeries(); series0->setName("sin曲线"); series1->setName("Cos曲线"); //图表添加曲线 m_chart->addSeries(series0); m_chart->addSeries(series1); qreal t=0,y1,y2,intv=0.1; int cnt = 100; //设置内容 for(int i=0;i<cnt;i++) { y1 = qSin(t); series0->append(t,y1); y2 = qSin(t+20); series1->append(t,y2); t+=intv; } //创建坐标轴 QValueAxis *axisX = new QValueAxis; axisX->setRange(0,10); axisX->setTitleText("time(secs)"); QValueAxis *axisY = new QValueAxis; axisY->setRange(-2,2); axisY->setTitleText("value"); //图表添加坐标轴 m_chart->setAxisX(axisX,series0); m_chart->setAxisY(axisY,series0); m_chart->setAxisX(axisX,series1); m_chart->setAxisY(axisY,series1); ui->rbSin->setChecked(true); //on_rbSin_toggled(true); } MyLineSeries::~MyLineSeries() { delete ui; } void MyLineSeries::on_rbSin_toggled(bool checked) { if(checked) { QLineSeries *curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); ui->lineEdit->setText(curSeries->name()); ui->cbLineVisible->setChecked(curSeries->isVisible()); ui->cbPointVisible->setChecked(curSeries->pointsVisible()); ui->horizontalSlider->setValue(curSeries->opacity() * 10); ui->cbLabelVisible->setChecked(curSeries->pointLabelsVisible()); } } void MyLineSeries::on_rbCos_toggled(bool checked) { if(checked) { QLineSeries *curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); ui->lineEdit->setText(curSeries->name()); ui->cbLineVisible->setChecked(curSeries->isVisible()); ui->cbPointVisible->setChecked(curSeries->pointsVisible()); ui->horizontalSlider->setValue(curSeries->opacity() * 10); ui->cbLabelVisible->setChecked(curSeries->pointLabelsVisible()); } } void MyLineSeries::on_cbLineVisible_toggled(bool checked) { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); curSeries->setVisible(checked); } void MyLineSeries::on_cbPointVisible_toggled(bool checked) { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); curSeries->setPointsVisible(checked); } void MyLineSeries::on_btnCurveColor_clicked() { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); curSeries->setColor(QColor(Qt::yellow)); } void MyLineSeries::on_cbLabelVisible_toggled(bool checked) { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); curSeries->setPointLabelsVisible(checked); } void MyLineSeries::on_btnLabelColor_toggled(bool checked) { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); curSeries->setPointLabelsColor(QColor(Qt::green)); } void MyLineSeries::on_btnLabelFont_toggled(bool checked) { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); QFont font = m_chart->legend()->font(); bool ok = false; font = QFontDialog::getFont(&ok,font); if(ok) curSeries->setPointLabelsFont(font); } void MyLineSeries::on_rbYpoint_toggled(bool checked) { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); curSeries->setPointLabelsFormat("@yPoint"); } void MyLineSeries::on_rbXyPoint_toggled(bool checked) { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); curSeries->setPointLabelsFormat("(@xPoint,@yPoint)"); } void MyLineSeries::on_horizontalSlider_valueChanged(int value) { QLineSeries *curSeries = nullptr; if(ui->rbSin->isChecked()) curSeries = (QLineSeries*)m_chartView->chart()->series().at(0); else curSeries = (QLineSeries*)m_chartView->chart()->series().at(1); curSeries->setOpacity(value / 10); }