Folderview selection marker, revisited

[Ignat Semenov]

Hello fello plasma devs!

Some fo you may remember the "disable selection marker on d-click kde 
setting" feature I did in January. Back then, we settled on "don't add 
options just because we can". But recently, there has appeared one more 
comment on the bug, describing a separate problem which I ironically 
experienced yesterday as well. The problem is as follows:

when the icon size is set to 16 or 22, it is impossible to hit the icon. 
With 16, it is absolutely inmpossible - you can test it yourself. At least 
with the Oxygen plasma theme (3px margins), though I'm not sure if it 
depends on the margins at all - need to check the code. So, the commenter 
asks for an option to disable the marker for this exact reason. At the smae 
time, he does not want to switch to d-click for solving this problem, and I 
understand him - it is at best a workaround.

So what do you think we can do here? One option is to disable the marker 
altogether if the icon size vs marker size hits some limit, or the frame 
size vs marker size. Another one is to make the marker smaller based on a 
similar condition. The third one is, of coure, the option to manually 
disable the marker - but that would void my work on the automatic detection.

Opinions? This may look like a minor issue not worth sucha long email and 
such a long discussion, but these minor nitpicks, or lack thereof, do sum up 
to crate a positive user experience.

Best regards
Ignat Semenov