问QtChart - C++ -保存未显示的图表

EN

QPixmap ChartView::getChartPixmap()
{
    QWidget* w = new QWidget; //creating a temporary widget, which will enable to display the chart

    w->resize(REPORT_IMAGE_WIDTH, REPORT_IMAGE_HEIGHT);
    QVBoxLayout *vl;
    vl = new QVBoxLayout(w);
    vl->addWidget(this); //'this' being the QChartView

    w->show(); //showing the widget so it is resized and can be grabbed with the correct dimensions

    QTest::qWait(500); //we need to wait for a little for the graph to be drawn otherwise you'll still have the same size problem

    QPixmap pixmap = w->grab(); //retrieve the pixmap

    w->hide(); //hiding the widget

    return pixmap;
}

void Printer::putProfileImage(QRect profilePlaceholder, QRect viewPort, QPainter *painter, QGraphivsView* profile)
{
    int x = profilePlaceholder.x() - viewPort.x();
    int y = profilePlaceholder.y() - viewPort.y();
    QRect pos(x, y, profilePlaceholder.width(), profilePlaceholder.height());
    profile->render(painter, pos);

}