Qt5画饼图、圆环图、极地图、折线图

#include <QtCharts> // 导入QtCharts所有的头文件，也可以单独导入某一个 // 引入qchart命名空间（注意：如果是在ui中提升为QChartView， // 则QT_CHARTS_USE_NAMESPACE一定要放在#include "ui_widget.h"前面，否则编译会失败） QT_CHARTS_USE_NAMESPACE #include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); } MainWindow::~MainWindow() { delete ui; } void MainWindow::on_pushButton_clicked() { QLineSeries *series = new QLineSeries(); series->append(0, 6); series->append(2, 4); series->append(3, 8); series->append(7, 4); series->append(10, 5); QChart *chart = new QChart(); chart->legend()->hide(); chart->addSeries(series); chart->createDefaultAxes(); chart->setTitle("折线图"); ui->graphicsView->setChart(chart); ui->graphicsView->setRenderHint(QPainter::Antialiasing); //抗锯齿处理 } void MainWindow::on_pushButton_2_clicked() { QPieSeries* series = new QPieSeries(); // 创建一个圆环图对象 series->setHoleSize(0.45); // 设置圆环孔径大小0.0 ~1.0 series->append("蛋白质占比 9.2%", 9.2); // 将具有指定值和标签的单个切片附加到series series->append("其它 23.8%", 223.8); series->append("碳水化合物 51.4%", 51.4); QPieSlice* slice = series->append("脂肪占比 15.6%", 15.6); // 设置一个圆环切片，并返回这个切片对象 slice->setExploded(); // 将当前切片分离 slice->setLabelVisible(); // 显示当前切片的标签，默认是不显示的 ui->graphicsView->setRenderHint(QPainter::Antialiasing); // 设置抗锯齿 ui->graphicsView->chart()->setTitle("圆环图标题"); // 设置图表标题 ui->graphicsView->chart()->addSeries(series); // 将创建的圆环对象添加进chart中 ui->graphicsView->chart()->setTheme(QChart::ChartThemeBlueCerulean); // 设置图表的样式 ui->graphicsView->chart()->legend()->setAlignment(Qt::AlignBottom); // 指定图例显示在图表底部 ui->graphicsView->chart()->legend()->setFont(QFont("Arial", 12)); // 设置图例的字体 } void MainWindow::on_pushButton_3_clicked() { //饼图 QPieSeries *series = new QPieSeries(); series->append("正常", 0.8)->setColor(QColor(0,200,200)); series->append("超标", 0.2)->setColor(QColor(200,150,0)); series->setLabelsVisible(); QChart *chart = new QChart(); chart->legend()->hide(); //是否显示图例 chart->addSeries(series); chart->setAnimationOptions(QChart::AllAnimations); chart->createDefaultAxes(); chart->setTitle("饼图"); ui->graphicsView->setChart(chart); ui->graphicsView->setRenderHint(QPainter::Antialiasing); //抗锯齿处理 } void MainWindow::on_pushButton_4_clicked() { //曲线 QLineSeries *seriesWD = new QLineSeries(); seriesWD->setName("WD"); //图 QPolarChart *chartWD = new QPolarChart(); chartWD->legend()->hide(); chartWD->addSeries(seriesWD); chartWD->setTheme(QChart::ChartThemeBlueCerulean); chartWD->setTitle("极地图"); //坐标轴 QValueAxis *angleAxis = new QValueAxis(); //角坐标 angleAxis->setTickCount(11); angleAxis->setLabelFormat("%d"); angleAxis->setShadesVisible(true); angleAxis->setShadesBrush(QBrush(QColor(249,249,255))); chartWD->addAxis(angleAxis, QPolarChart::PolarOrientationAngular); QValueAxis *radiaAxis = new QValueAxis(); radiaAxis->setTickCount(11); radiaAxis->setLabelFormat("%d"); chartWD->addAxis(radiaAxis, QPolarChart::PolarOrientationRadial); seriesWD->attachAxis(radiaAxis); seriesWD->attachAxis(angleAxis); //赋值 for(int i=0; i<=360; i+=10) { seriesWD->append(i, i+10); } radiaAxis->setRange(0,200); angleAxis->setRange(0,360); ui->graphicsView->setChart(chartWD); ui->graphicsView->setRenderHint(QPainter::Antialiasing); //抗锯齿处理 }