Qt QChart title background

Question

Does somebody know how to make QChart look like on the image below?

I have created bar QBarChart and set its background color and color of the bar and removed axis numbers, but I don't know how to set title of the chart to look like this.

How to make the background of the title to have different color and to take same width as the QChart?

Thought about that, but the problem is that QChart is inside few layouts, so it is a little bit tricky to position it well. — lexinho021 021, Feb 20 '19 at 10:12
well if the code ain't big you can edit the post & add it & ill try to di — Spinkoo, Feb 20 '19 at 10:50

score 0 · Accepted Answer · answered Feb 21 '19 at 07:56

I did as Spinkoo suggested.

Created QLabel in MainWindow constructor and created function which is used to position QLabel over QChart. That function must be called after the constructor of the MainWindow, because then all of the sizes and positions of the widgets and layouts are known. That function is called after the constructor of the MainWindow and each time when Resize event happens.

void MainWindow::positionLabel()
{
    // ui->widget inside which is QChart
    // ui->verticalLayout inside which is ui->widget
    QPoint pos = ui->widget->pos() + ui->verticalLayout->geometry().topLeft();

    // m_title pointer to QLabel which is created inside constructor
    m_title->setGeometry(pos.x() + 10, pos.y() + 20, ui->widget->width() - 20, CHART_TITLE_SIZE * 2.2);

    this->repaint();

    return;

}

This is pretty much a workaround solution, probably there should be a way to create custom QChart class which will have the look as the chart from the question. So, if someone knows how to do that, I'd appreciate sharing.

Qt QChart title background

1 Answers1