Slick Forums

hi all,

I'm creating my own inventory panel with TWL and I have a problem. I don't manage to make out what are AnimationState, and they are very important ...
I've read the source code, but I still don't understand ...

FaZeGa

AnimationState is a class (and an interface) which manage animation states.
These states are named (managed by AnimationState.StateKey) and can either be active (true) or inactive/not preset (false).
Also each state has a timer associated which counts the time since that state was last changed.

It is easiest explained for a Button (you can use the Theme Editor to look at the active animation states for every widget).
The Button has the following states: "hover", "pressed", "armed", "selected" and "keyboardFocus".
The theme can check for any combination of states using the if/unless conditions to decide how the button should be rendered.

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TWL - The Themable Widget Library

Hover and pressed make sense, but what are armed and selected ?

"armed" is a combination of "hover" and "pressed". This state of the button (see ButtonModel) is used to indicate that on release it will fire the callback.
"selected" applies only to toggle buttons.

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TWL - The Themable Widget Library

Ok, thank you very much, now that's clear.

But in the inventory source code in the TWL examples, the icons are drawing with an animation state, which is settled for the item slot, not for the icon. I don't understand that. I tried to change the Image in Slick Image, and that does not work.

Huh?

In the inventory demo each item slot is a widget. It has it's own AnimationState which uses the following states (in that demo):
"dragActive" - that item is currently being dragged around
"dropOk" - the currently dragged item can be dropped in this slot
"dropBlocked" - the currently dragged item can NOT be dropped in this slot

You can add as many animation states as you want. It is common to declare them as public private final fields at the top of the class which uses them.

And the AnimationState is also used for drawing the icons in paintWidget.
But the icons in the demo theme do not check for any states.

The application/widgets should expose as much state as possible to give the theme designer maximum flexibility.

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TWL - The Themable Widget Library