[Interest] [QML] Is there a way to implement font.pointSize/font.pixelSize switch?

[Ulf Hermann]

> This code can only switch a Label to use font.pixelSize from 
> font.pointSize and can't switch it back.
> 
> Is there a way to make it work? In other words, how do I reset 
> font.pixelSize to an undefined value so it will use font.pointSize again?
> 
> Label {
>              text: "TEST"
>              font.pointSize: cb.checked ? 0 : 13
>              font.pixelSize: cb.checked ? 13 : 0
>   }

This doesn't work because the two properties are not independent. We 
also don't have a RESET accessor for either. Even if we had, the RESET 
accessor would reset the value to some default which would still 
conflict with the other property's setter.

What you can do, since font is a structured value type, is bind the 
whole font instance:

font: cb.checked ? {pointSize: 13} : {pixelSize: 13)

best,
Ulf