Big gap between the reference labels and the commit title

[filiperinaldi]

There is a big gap between the ref names and the text following them in the 'Rev list' view under MacOS. See screenshot:

It works fine (no gap) when running QGit in debug mode. But in this case, the fonts are very pixelated.

[mwoehlke]

This seems to be a HighDPI issue. I've noticed it also on Linux, on a system with display scaling == 2. It's fine on a different machine that is almost the same software but not HighDPI.

(I'm virtually certain that the width to allow is being computed in actual pixels, but applied in virtual pixels.)

[filiperinaldi]

Yes, the problem is in ListViewDelegate::paintLog(). The screenshot does not show, but when there are multiple markers on the same commit (tags, branches, etc) then they have compounding gaps. For this, the problem is in ListViewDelegate::addTextPixmap().

I have a fix now for both issues (I just need to clean-up and put back the conditionals QT5 flags before sending a PR): filiperinaldi@c5cf6d0.