Understanding QFontMetrics::bounding rect - Video

Sometimes the simple questions come with a super complex answer.

Question: How do you draw a rectangle around a piece of text?
Answer: Uh ohh, hold my beer (or coffee or ...) ..... 

QFontMetrics::width() doesn't exists anymore, instead it suggest to call QFontMetrics:::horizontalAdvance. That, however, returns a too tight box. 
Then there is QFontMetrics::boundingRect, but at first sight that just return something really weird.
Then there is QPainter::boundingRect, but just like horizontalAdvance, that is too tight too...
But in the end Jesper, untangles it all and succeeds!

Chapters
0:00 Intro
0:30 What triggered this episode
01:22 QFontMetrics::width is depreciated
02:24 QFontMetrics::horizontalAdvance draws outside the box
3:22 documentation for horitontalAdvance
6:36 QFontMetrics::boundingRect
9:58 OK, lets try and translate the boundingRect to (0,0)
10:47 Let's try and translate by (leftBerring, accent)
12:50 QPainter::boundingRect
14:25 Lets just try and add some space...
17:00 QFontMetrics::tightBoundingRect
17:36 Finally, I think I understood it!
22:45 Let me know your thoughts on this.

The example code showcased in this video is available here: https://github.com/KDABLabs/kdabtv/tree/master/Qt-Widgets-and-more/font-metrics

Link to Episode 41 - Module 6 - Introduction to Qt Widgets series: https://youtu.be/dhEdW4QBx70?list=PL6CJYn40gN6jIsRYriqN70V83t_mdDZHT