constraints and size hints

[Ignat Semenov]

Hello fellow plasma devs!

Is there any docs on constraints and size hints? The documentation for the 
constraintsEvent method is empty (!!) and its relation to sizeHint is 
absolutely unclear. I've spent a day fighting kickoff trying to make it 
resize properly when in panel, whereas simple kickoff worjs just fine with 
the same code. Yesterday I spent half a day fighting those constraints and 
sizeHints in folderview, which does custom handling of the dropped on panel 
event - it can not use PopupApplet because of the Plasma class design... Now 
the constraints and sizeHints code which woks just fine in Trash and 
Folderview does not work in kickoff (which ihnerits popup applet) - and I'm 
afraid that if I go forward and try to fix all those "proper sizing when in 
the panel" bugs, I will lose a week just because I'll have to debug every 
case for 12 hours. I find this to be extremely unproductive.

Sorry if I sound negative, but this is not what a dev should spend their 
time on. Doing a simple thing requires a lot of trial and error, and working 
without a clear understanding of the overall picture shoud be impossible for 
any good programmer - this is not how things should be done.

Waiting for two people (mostly one) to come up on IRC to finish your code is 
not normal ither.

Thus, I encourage those in the know to document this area with examples and 
a real explanation, as seen in the Qt docs. Thank you a lot in advance.

Best regards,
Ignat Semenov