How to position a QStaticText by its baseline?

Question

How can I achieve baseline positioning for a QStaticText object?

For regular text, it's simple: In QPainter::drawText(position, text), the position.y coordinate refers to the baseline.

Answer 1

It turned out that drawStaticText positions the text at the baseline, but offsetting the y-coordinate by the font's ascent.

This is meant by top of the font in the documentation.

Minimal demo:

#include <QApplication>
#include <QWidget>
#include <QPainter>
#include <QPaintEvent>
#include <QStaticText>

class Window: public QWidget
{
public:
    void paintEvent(QPaintEvent*) override
    {
        QPainter painter(this);
        const int y = 20;

        painter.fillRect(0, y, 200, 1, Qt::black);

        // These all share the same baseline
        painter.drawStaticText(10, y, QStaticText("Üg."));
        painter.drawStaticText(26, y, QStaticText("."));
        painter.drawText(29, y + QFontMetrics(QApplication::font()).ascent(), ".");
    }
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    Window win;
    win.show();
    return app.exec();
}

Output: