Animators fps, Plasma KCM, Physics and Duration control

[Riccardo Iaconelli]

Hello,
sorry for the subject a bit criptic, I'll try to explain what I've just 
thought in the shower.

So, I was patching Phase for the duration control problem.
Patching it, I thought that being able to control fps from the plasmoid would 
be good, after all, not all the animations require the same number of fps.

But then, the code was already querying the animator for them, which is 
obviously right... if someone wants to do a very resource-conservative 
animator, he will probably want to drastically reduce the number of fps.

So, what's my solution? Make the animator specify several fps values, basing 
on the kind of animations we're going to do. Concretely, this is how moveItem 
would become:

Phase::moveItem(QGraphicsItem *item, int duration, Movement movement, const 
QPoint &destination, Phase::Smoothness smoothness)

where Phase::Smoothness will be something like:

Phase::VerySmooth
Phase::Smooth
Phase::Normal
Phase::Fast
Phase::Veryfast

(this is just an example, the other methods will be modified in a similar 
way).

So, now the animator will implement 5 more getters, all of them returning a 
int, which would represent the number of fps desired for a certain level of 
smoothness. The plasmoid writer will then be able to decide what animation he 
wants to do and choose the appropriate enum value.

So, now there's the problem for the user of how to set an animator.

Now, a KCM with two comboboxes would be the best thing for me to be able to 
configure the animators, makes the user choose one for when he's on AC, and 
one for when he's battery-powered. It should be accessible from the toolbox 
and systemsettings. 

I would propose to ship with plasma 4 animators: fast, normal, fancy and 
powersave, the first three would be to adapt to several levels of CPU 
speedness, while the latter is for when we're running on batteries.

Oh, another thing, I want to write an animator which bases on a proper physics 
model, with some small bouncness when moving items around (like iPod 
Touch/iPhone, if someone has ever seen it... they are subtle, don't bore the 
user, and make the experience much nicer). If there's someone who wants to 
join the efforts, please tell me.

Thoughts?

Bye,
-Riccardo
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