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#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QPainter>
#include <QMenuBar>
#include <QtSvg/QSvgGenerator>
#include <QFileDialog>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = );
    ~MainWindow();

virtual void paintEvent(QPaintEvent *event);

public slots:
    void actionSaveAsSVG();

private:
    void paintAll(QSvgGenerator *generator = nullptr);
};

#endif // MAINWINDOW_H

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#include "MainWindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    QMenu *fileMenu = menuBar()->addMenu(QObject::tr("&File"));
    fileMenu->addAction(QObject::tr("Save As Svg"), this, &MainWindow::actionSaveAsSVG);
}

MainWindow::~MainWindow()
{

}

void MainWindow::paintEvent(QPaintEvent *event)
{
    paintAll();
}

void MainWindow::actionSaveAsSVG()
{
    QString filePath = QFileDialog::getSaveFileName(this, "Save SVG",

"", "SVG files (*.svg)");
    if (filePath == "")
        return;
    QSvgGenerator generator;
    generator.setFileName(filePath);
    generator.setSize(QSize(this->width(), this->height()));
    generator.setViewBox(QRect(, this->width(), this->height()));
    generator.setTitle("SVG Example");
    generator.setDescription("This SVG file is generated by Qt.");
    paintAll(&generator);
}

void MainWindow::paintAll(QSvgGenerator *generator)
{
    QPainter painter;
    if (generator)
        painter.begin(generator);
    else
        painter.begin(this);

// Draw Text
, QFont::Bold));
    painter.drawText(QPoint(), "Hello Qt");
    // Draw Line
));
    // Draw Rectangle
    painter.setBrush(Qt::BDiagPattern);
    painter.drawRect(QRect());
    // Draw Ellipse
    QPen ellipsePen;
    ellipsePen.setColor(Qt::red);
    ellipsePen.setStyle(Qt::DashDotLine);
    painter.setPen(ellipsePen);
    painter.drawEllipse(QPoint();
    // Draw Rectangle
    QPainterPath rectPath;
    rectPath.addRect(QRect());
    painter.setPen(QPen(Qt::red, , Qt::DashDotLine, Qt::FlatCap,
                        Qt::MiterJoin));
    painter.setBrush(Qt::yellow);
    painter.drawPath(rectPath);
    // Draw Ellipse
    QPainterPath ellipsePath;
    ellipsePath.addEllipse(QPoint();
    painter.setPen(QPen(QColor(, Qt::SolidLine,
                        Qt::FlatCap, Qt::MiterJoin));
    painter.setBrush(QColor());
    painter.drawPath(ellipsePath);
    painter.end();
}

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#include "MainWindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

MainWindow w;
    w.resize();
    w.show();

return a.exec();
}